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'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = \"./packages/material-components-web/index.ts\");\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport autoInit, {MDCAttachable} from '@material/auto-init/index';\nimport * as banner from '@material/banner/index';\nimport * as base from '@material/base/index';\nimport * as checkbox from '@material/checkbox/index';\nimport * as chips from '@material/chips/deprecated/index';\nimport * as circularProgress from '@material/circular-progress/index';\nimport * as dataTable from '@material/data-table/index';\nimport * as dialog from '@material/dialog/index';\nimport * as dom from '@material/dom/index';\nimport * as drawer from '@material/drawer/index';\nimport * as floatingLabel from '@material/floating-label/index';\nimport * as formField from '@material/form-field/index';\nimport * as iconButton from '@material/icon-button/index';\nimport * as lineRipple from '@material/line-ripple/index';\nimport * as linearProgress from '@material/linear-progress/index';\nimport * as list from '@material/list/index';\nimport * as menuSurface from '@material/menu-surface/index';\nimport * as menu from '@material/menu/index';\nimport * as notchedOutline from '@material/notched-outline/index';\nimport * as radio from '@material/radio/index';\nimport * as ripple from '@material/ripple/index';\nimport * as segmentedButton from '@material/segmented-button/index';\nimport * as select from '@material/select/index';\nimport * as slider from '@material/slider/index';\nimport * as snackbar from '@material/snackbar/index';\nimport * as switchControl from '@material/switch/index';\nimport * as tabBar from '@material/tab-bar/index';\nimport * as tabIndicator from '@material/tab-indicator/index';\nimport * as tabScroller from '@material/tab-scroller/index';\nimport * as tab from '@material/tab/index';\nimport * as textField from '@material/textfield/index';\nimport * as tooltip from '@material/tooltip/index';\nimport * as topAppBar from '@material/top-app-bar/index';\n\n// Register all components\nautoInit.register('MDCBanner', banner.MDCBanner);\nautoInit.register('MDCCheckbox', checkbox.MDCCheckbox);\nautoInit.register('MDCChip', chips.MDCChip);\nautoInit.register('MDCChipSet', chips.MDCChipSet);\nautoInit.register('MDCCircularProgress', circularProgress.MDCCircularProgress);\nautoInit.register('MDCDataTable', dataTable.MDCDataTable);\nautoInit.register('MDCDialog', dialog.MDCDialog);\nautoInit.register('MDCDrawer', drawer.MDCDrawer);\nautoInit.register('MDCFloatingLabel', floatingLabel.MDCFloatingLabel);\nautoInit.register('MDCFormField', formField.MDCFormField);\nautoInit.register('MDCIconButtonToggle', iconButton.MDCIconButtonToggle);\nautoInit.register('MDCLineRipple', lineRipple.MDCLineRipple);\nautoInit.register('MDCLinearProgress', linearProgress.MDCLinearProgress);\nautoInit.register('MDCList', list.MDCList);\nautoInit.register('MDCMenu', menu.MDCMenu);\nautoInit.register('MDCMenuSurface', menuSurface.MDCMenuSurface);\nautoInit.register('MDCNotchedOutline', notchedOutline.MDCNotchedOutline);\nautoInit.register('MDCRadio', radio.MDCRadio);\nautoInit.register('MDCRipple', ripple.MDCRipple);\nautoInit.register('MDCSegmentedButton', segmentedButton.MDCSegmentedButton);\nautoInit.register('MDCSelect', select.MDCSelect);\nautoInit.register('MDCSlider', slider.MDCSlider);\nautoInit.register('MDCSnackbar', snackbar.MDCSnackbar);\nautoInit.register(\n    'MDCSwitch', switchControl.MDCSwitch as unknown as MDCAttachable);\nautoInit.register('MDCTabBar', tabBar.MDCTabBar);\nautoInit.register('MDCTextField', textField.MDCTextField);\nautoInit.register('MDCTooltip', tooltip.MDCTooltip);\nautoInit.register('MDCTopAppBar', topAppBar.MDCTopAppBar);\n\n// Export all components.\nexport {\n  autoInit,\n  banner,\n  base,\n  checkbox,\n  chips,\n  circularProgress,\n  dataTable,\n  dialog,\n  dom,\n  drawer,\n  floatingLabel,\n  formField,\n  iconButton,\n  lineRipple,\n  linearProgress,\n  list,\n  menu,\n  menuSurface,\n  notchedOutline,\n  radio,\n  ripple,\n  segmentedButton,\n  select,\n  slider,\n  snackbar,\n  switchControl,\n  tab,\n  tabBar,\n  tabIndicator,\n  tabScroller,\n  textField,\n  tooltip,\n  topAppBar,\n};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * AnimationFrame provides a user-friendly abstraction around requesting\n * and canceling animation frames.\n */\nexport class AnimationFrame {\n  private readonly rafIDs = new Map<string, number>();\n\n  /**\n   * Requests an animation frame. Cancels any existing frame with the same key.\n   * @param {string} key The key for this callback.\n   * @param {FrameRequestCallback} callback The callback to be executed.\n   */\n  request(key: string, callback: FrameRequestCallback) {\n    this.cancel(key);\n    const frameID = requestAnimationFrame((frame) => {\n      this.rafIDs.delete(key);\n      // Callback must come *after* the key is deleted so that nested calls to\n      // request with the same key are not deleted.\n      callback(frame);\n    });\n    this.rafIDs.set(key, frameID);\n  }\n\n  /**\n   * Cancels a queued callback with the given key.\n   * @param {string} key The key for this callback.\n   */\n  cancel(key: string) {\n    const rafID = this.rafIDs.get(key);\n    if (rafID) {\n      cancelAnimationFrame(rafID);\n      this.rafIDs.delete(key);\n    }\n  }\n\n  /**\n   * Cancels all queued callback.\n   */\n  cancelAll() {\n    // Need to use forEach because it's the only iteration method supported\n    // by IE11. Suppress the underscore because we don't need it.\n    // tslint:disable-next-line:enforce-name-casing\n    this.rafIDs.forEach((_, key) => {\n      this.cancel(key);\n    });\n  }\n\n  /**\n   * Returns the queue of unexecuted callback keys.\n   */\n  getQueue(): string[] {\n    const queue: string[] = [];\n    // Need to use forEach because it's the only iteration method supported\n    // by IE11. Suppress the underscore because we don't need it.\n    // tslint:disable-next-line:enforce-name-casing\n    this.rafIDs.forEach((_, key) => {\n      queue.push(key);\n    });\n    return queue;\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {\n  CssVendorPropertyMap, JsVendorPropertyMap,\n  PrefixedCssPropertyName, PrefixedJsEventType,\n  StandardCssPropertyName, StandardJsEventType,\n} from './types';\n\nconst cssPropertyNameMap: CssVendorPropertyMap = {\n  animation: {\n    prefixed: '-webkit-animation',\n    standard: 'animation',\n  },\n  transform: {\n    prefixed: '-webkit-transform',\n    standard: 'transform',\n  },\n  transition: {\n    prefixed: '-webkit-transition',\n    standard: 'transition',\n  },\n};\n\nconst jsEventTypeMap: JsVendorPropertyMap = {\n  animationend: {\n    cssProperty: 'animation',\n    prefixed: 'webkitAnimationEnd',\n    standard: 'animationend',\n  },\n  animationiteration: {\n    cssProperty: 'animation',\n    prefixed: 'webkitAnimationIteration',\n    standard: 'animationiteration',\n  },\n  animationstart: {\n    cssProperty: 'animation',\n    prefixed: 'webkitAnimationStart',\n    standard: 'animationstart',\n  },\n  transitionend: {\n    cssProperty: 'transition',\n    prefixed: 'webkitTransitionEnd',\n    standard: 'transitionend',\n  },\n};\n\nfunction isWindow(windowObj: Window): boolean {\n  return Boolean(windowObj.document) && typeof windowObj.document.createElement === 'function';\n}\n\nexport function getCorrectPropertyName(windowObj: Window, cssProperty: StandardCssPropertyName):\n    StandardCssPropertyName | PrefixedCssPropertyName {\n  if (isWindow(windowObj) && cssProperty in cssPropertyNameMap) {\n    const el = windowObj.document.createElement('div');\n    const {standard, prefixed} = cssPropertyNameMap[cssProperty];\n    const isStandard = standard in el.style;\n    return isStandard ? standard : prefixed;\n  }\n  return cssProperty;\n}\n\nexport function getCorrectEventName(windowObj: Window, eventType: StandardJsEventType):\n    StandardJsEventType | PrefixedJsEventType {\n  if (isWindow(windowObj) && eventType in jsEventTypeMap) {\n    const el = windowObj.document.createElement('div');\n    const {standard, prefixed, cssProperty} = jsEventTypeMap[eventType];\n    const isStandard = cssProperty in el.style;\n    return isStandard ? standard : prefixed;\n  }\n  return eventType;\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const strings = {\n  AUTO_INIT_ATTR: 'data-mdc-auto-init',\n  AUTO_INIT_STATE_ATTR: 'data-mdc-auto-init-state',\n  INITIALIZED_STATE: 'initialized',\n};\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// tslint:disable:only-arrow-functions\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCFoundation} from '@material/base/foundation';\n\nimport {strings} from './constants';\n\nconst {AUTO_INIT_ATTR, AUTO_INIT_STATE_ATTR, INITIALIZED_STATE} = strings;\n\nexport interface MDCAttachable {\n  new<F extends MDCFoundation>(root: Element, foundation?: F, ...args: Array<unknown>): MDCComponent<F>;\n\n  // Static method.\n  attachTo<F extends MDCFoundation>(root: Element): MDCComponent<F>;\n}\n\ninterface InternalComponentRegistry {\n  [key: string]: MDCAttachable;\n}\n\nconst registry: InternalComponentRegistry = {};\n\nconst CONSOLE_WARN = console.warn.bind(console); // tslint:disable-line:no-console\n\nfunction emit<T extends object>(evtType: string, evtData: T, shouldBubble = false) {\n  let evt;\n  if (typeof CustomEvent === 'function') {\n    evt = new CustomEvent<T>(evtType, {\n      bubbles: shouldBubble,\n      detail: evtData,\n    });\n  } else {\n    evt = document.createEvent('CustomEvent');\n    evt.initCustomEvent(evtType, shouldBubble, false, evtData);\n  }\n\n  document.dispatchEvent(evt);\n}\n\n/* istanbul ignore next: optional argument is not a branch statement */\n/**\n * Auto-initializes all MDC components on a page.\n */\nfunction mdcAutoInit(root = document) {\n  const components = [];\n  let nodes: Element[] = [].slice.call(root.querySelectorAll(`[${AUTO_INIT_ATTR}]`));\n  nodes = nodes.filter((node) => node.getAttribute(AUTO_INIT_STATE_ATTR) !== INITIALIZED_STATE);\n\n  for (const node of nodes) {\n    const ctorName = node.getAttribute(AUTO_INIT_ATTR);\n    if (!ctorName) {\n      throw new Error('(mdc-auto-init) Constructor name must be given.');\n    }\n\n    const Constructor = registry[ctorName]; // tslint:disable-line:variable-name\n    if (typeof Constructor !== 'function') {\n      throw new Error(\n          `(mdc-auto-init) Could not find constructor in registry for ${ctorName}`);\n    }\n\n    // TODO: Should we make an eslint rule for an attachTo() static method?\n    // See https://github.com/Microsoft/TypeScript/issues/14600 for discussion of static interface support in TS\n    const component = Constructor.attachTo(node);\n    Object.defineProperty(node, ctorName, {\n      configurable: true,\n      enumerable: false,\n      value: component,\n      writable: false,\n    });\n    components.push(component);\n    node.setAttribute(AUTO_INIT_STATE_ATTR, INITIALIZED_STATE);\n  }\n\n  emit('MDCAutoInit:End', {});\n  return components;\n}\n\n// Constructor is PascalCased because it is a direct reference to a class, rather than an instance of a class.\n// tslint:disable-next-line:variable-name\nmdcAutoInit.register = function(componentName: string, Constructor: MDCAttachable, warn = CONSOLE_WARN) {\n  if (typeof Constructor !== 'function') {\n    throw new Error(`(mdc-auto-init) Invalid Constructor value: ${Constructor}. Expected function.`);\n  }\n  const registryValue = registry[componentName];\n  if (registryValue) {\n    warn(`(mdc-auto-init) Overriding registration for ${componentName} with ${Constructor}. Was: ${registryValue}`);\n  }\n  registry[componentName] = Constructor;\n};\n\nmdcAutoInit.deregister = function(componentName: string) {\n  delete registry[componentName];\n};\n\n/** @nocollapse */\nmdcAutoInit.deregisterAll = function() {\n  const keys = Object.keys(registry) as string[];\n  keys.forEach(this.deregister, this);\n};\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default mdcAutoInit;\nexport {mdcAutoInit};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {CloseReason} from './constants';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCBannerAdapter {\n  /**\n   * Adds the given class to the banner root element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * @return Returns the height of the banner content element.\n   */\n  getContentHeight(): number;\n\n  /**\n   * Broadcasts an event denoting that the banner has finished closing.\n   */\n  notifyClosed(reason: CloseReason): void;\n\n  /**\n   * Broadcasts an event denoting that the banner has just started closing.\n   */\n  notifyClosing(reason: CloseReason): void;\n\n  /**\n   * Broadcasts an event denoting that the banner has finished opening.\n   */\n  notifyOpened(): void;\n\n  /**\n   * Broadcasts an event denoting that the banner has just started opening.\n   */\n  notifyOpening(): void;\n\n  /**\n   * Releases focus from banner and restores focus to the previously focused\n   * element.\n   */\n  releaseFocus(): void;\n\n  /**\n   * Removes the given class from the banner root element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Sets a style property of the banner root element to the passed value.\n   */\n  setStyleProperty(propertyName: string, value: string): void;\n\n  /**\n   * Traps focus in banner and focuses on the primary action button.\n   */\n  trapFocus(): void;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {FocusTrap} from '@material/dom/focus-trap';\nimport {closest} from '@material/dom/ponyfill';\n\nimport {MDCBannerAdapter} from './adapter';\nimport {CloseReason, events, MDCBannerCloseEventDetail, MDCBannerFocusTrapFactory, selectors} from './constants';\nimport {MDCBannerFoundation} from './foundation';\n\n/** Vanilla JS implementation of banner component. */\nexport class MDCBanner extends MDCComponent<MDCBannerFoundation> {\n  static attachTo(root: Element) {\n    return new MDCBanner(root);\n  }\n\n  root!: HTMLElement;  // Assigned in MDCComponent constructor.\n  private handleContentClick!:\n      SpecificEventListener<'click'>;            // Assigned in #initialize.\n  private primaryActionEl!: HTMLElement;         // Assigned in #initialize.\n  private secondaryActionEl!: HTMLElement|null;  // Assigned in #initialize.\n  private textEl!: HTMLElement;                  // Assigned in #initialize.\n  private contentEl!: HTMLElement;               // Assigned in #initialize.\n  private focusTrap!: FocusTrap;  // assigned in initialSyncWithDOM()\n  private focusTrapFactory!:\n      MDCBannerFocusTrapFactory;  // assigned in initialize()\n\n  initialize(\n      focusTrapFactory: MDCBannerFocusTrapFactory = (el, focusOptions) =>\n          new FocusTrap(el, focusOptions),\n  ) {\n    this.contentEl = this.root.querySelector(selectors.CONTENT) as HTMLElement;\n    this.textEl = this.root.querySelector(selectors.TEXT) as HTMLElement;\n    this.primaryActionEl =\n        this.root.querySelector(selectors.PRIMARY_ACTION) as HTMLElement;\n    this.secondaryActionEl =\n        this.root.querySelector(selectors.SECONDARY_ACTION) as HTMLElement;\n    this.focusTrapFactory = focusTrapFactory;\n\n    this.handleContentClick = (evt) => {\n      const target = evt.target as Element;\n      if (closest(target, selectors.PRIMARY_ACTION)) {\n        this.foundation.handlePrimaryActionClick();\n      } else if (closest(target, selectors.SECONDARY_ACTION)) {\n        this.foundation.handleSecondaryActionClick();\n      }\n    };\n  }\n\n  initialSyncWithDOM() {\n    this.registerContentClickHandler(this.handleContentClick);\n    this.focusTrap = this.focusTrapFactory(\n        this.root, {initialFocusEl: this.primaryActionEl});\n  }\n\n  destroy() {\n    super.destroy();\n    this.deregisterContentClickHandler(this.handleContentClick);\n  }\n\n  layout() {\n    this.foundation.layout();\n  }\n\n  /**\n   * Opens the banner and fires events.OPENING to indicate the beginning of its\n   * opening animation and then events.OPENED once the animation finishes.\n   */\n  open() {\n    this.foundation.open();\n  }\n\n  /**\n   * Closes the banner and fires events.CLOSING to indicate the beginning of its\n   * closing animation and then events.CLOSED once the animation finishes.\n   * @param reason Why the banner was closed. Value will be passed to\n   *     events.CLOSING and events.CLOSED via the `event.detail.reason`\n   *     property. Standard values are CloseReason.PRIMARY and\n   *     CloseReason.SECONDARY, but CloseReason.UNSPECIFIED is provided for\n   *     custom handling of programmatic closing of the banner.\n   */\n  close(reason: CloseReason) {\n    this.foundation.close(reason);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take\n    // a Partial<MDCFooAdapter>. To ensure we don't accidentally omit any\n    // methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCBannerAdapter = {\n      addClass: (className) => {\n        this.root.classList.add(className);\n      },\n      getContentHeight: () => {\n        return this.contentEl.offsetHeight;\n      },\n      notifyClosed: (reason) => {\n        this.emit<MDCBannerCloseEventDetail>(events.CLOSED, {reason});\n      },\n      notifyClosing: (reason) => {\n        this.emit<MDCBannerCloseEventDetail>(events.CLOSING, {reason});\n      },\n      notifyOpened: () => {\n        this.emit(events.OPENED, {});\n      },\n      notifyOpening: () => {\n        this.emit(events.OPENING, {});\n      },\n      releaseFocus: () => {\n        this.focusTrap.releaseFocus();\n      },\n      removeClass: (className) => {\n        this.root.classList.remove(className);\n      },\n      setStyleProperty: (propertyName, value) => {\n        this.root.style.setProperty(propertyName, value);\n      },\n      trapFocus: () => {\n        this.focusTrap.trapFocus();\n      },\n    };\n    return new MDCBannerFoundation(adapter);\n  }\n\n  get isOpen(): boolean {\n    return this.foundation.isOpen();\n  }\n\n  getText(): string {\n    return this.textEl.textContent || '';\n  }\n\n  setText(text: string) {\n    this.textEl.textContent = text;\n  }\n\n  getPrimaryActionText(): string {\n    return this.primaryActionEl.textContent || '';\n  }\n\n  setPrimaryActionText(actionButtonText: string) {\n    this.primaryActionEl.textContent = actionButtonText;\n  }\n\n  /** Returns null if the banner has no secondary action. */\n  getSecondaryActionText(): string|null {\n    return this.secondaryActionEl ? this.secondaryActionEl.textContent || '' :\n                                    null;\n  }\n\n  setSecondaryActionText(actionButtonText: string) {\n    if (this.secondaryActionEl) {\n      this.secondaryActionEl.textContent = actionButtonText;\n    }\n  }\n\n  private registerContentClickHandler(handler: SpecificEventListener<'click'>) {\n    this.contentEl.addEventListener('click', handler as EventListener);\n  }\n\n  private deregisterContentClickHandler(handler:\n                                            SpecificEventListener<'click'>) {\n    this.contentEl.removeEventListener('click', handler as EventListener);\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FocusOptions, FocusTrap} from '@material/dom/focus-trap';\n\n/** Banner element classes. */\nexport const cssClasses = {\n  CLOSING: 'mdc-banner--closing',\n  OPEN: 'mdc-banner--open',\n  OPENING: 'mdc-banner--opening',\n};\n\n/** Banner numbers. */\nexport const numbers = {\n  BANNER_ANIMATION_CLOSE_TIME_MS: 250,\n  BANNER_ANIMATION_OPEN_TIME_MS: 300,\n};\n\n/** Banner events. */\nexport const events = {\n  CLOSED: 'MDCBanner:closed',\n  CLOSING: 'MDCBanner:closing',\n  OPENED: 'MDCBanner:opened',\n  OPENING: 'MDCBanner:opening',\n};\n\n/** Banner selectors. */\nexport const selectors = {\n  CONTENT: '.mdc-banner__content',\n  PRIMARY_ACTION: '.mdc-banner__primary-action',\n  SECONDARY_ACTION: '.mdc-banner__secondary-action',\n  TEXT: '.mdc-banner__text',\n};\n\n/** Reason as to why the banner was closed. */\nexport enum CloseReason {\n  // Indicates the banner was closed via primary action button.\n  PRIMARY,\n  // Indicates the banner was closed via secondary action button.\n  SECONDARY,\n  // Will never be used by the component. Provided for custom handling of\n  // programmatic closing of the banner.\n  UNSPECIFIED,\n}\n\n/** Interface for the detail of the closing and closed events emitted. */\nexport interface MDCBannerCloseEventDetail {\n  reason: CloseReason;\n}\n\n/**  */\nexport type MDCBannerFocusTrapFactory = (\n    element: HTMLElement,\n    options: FocusOptions,\n    ) => FocusTrap;\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\n\nimport {MDCBannerAdapter} from './adapter';\nimport {CloseReason, cssClasses, numbers} from './constants';\n\nconst {OPENING, OPEN, CLOSING} = cssClasses;\n\n/**\n * Foundation class for banner. Responsibilities include opening and closing the\n * banner.\n */\nexport class MDCBannerFoundation extends MDCFoundation<MDCBannerAdapter> {\n  static get defaultAdapter(): MDCBannerAdapter {\n    return {\n      addClass: () => undefined,\n      getContentHeight: () => 0,\n      notifyClosed: () => undefined,\n      notifyClosing: () => undefined,\n      notifyOpened: () => undefined,\n      notifyOpening: () => undefined,\n      releaseFocus: () => undefined,\n      removeClass: () => undefined,\n      setStyleProperty: () => undefined,\n      trapFocus: () => undefined,\n    };\n  }\n\n  private isOpened = false;\n  // Request id for open animation, used to cancel the refresh callback\n  // request on close() and destroy().\n  private animationFrame = 0;\n  // Timer id for close and open animation, used to cancel the timer on\n  // close() and destroy().\n  private animationTimer = 0;\n\n  constructor(adapter?: Partial<MDCBannerAdapter>) {\n    super({...MDCBannerFoundation.defaultAdapter, ...adapter});\n  }\n\n  destroy() {\n    cancelAnimationFrame(this.animationFrame);\n    this.animationFrame = 0;\n    clearTimeout(this.animationTimer);\n    this.animationTimer = 0;\n  }\n\n  open() {\n    this.isOpened = true;\n    this.adapter.notifyOpening();\n    this.adapter.removeClass(CLOSING);\n    this.adapter.addClass(OPENING);\n\n    const contentHeight = this.adapter.getContentHeight();\n    this.animationFrame = requestAnimationFrame(() => {\n      this.adapter.addClass(OPEN);\n      this.adapter.setStyleProperty('height', `${contentHeight}px`);\n\n      this.animationTimer = setTimeout(() => {\n        this.handleAnimationTimerEnd();\n        this.adapter.trapFocus();\n        this.adapter.notifyOpened();\n      }, numbers.BANNER_ANIMATION_OPEN_TIME_MS);\n    });\n  }\n\n  /**\n   * @param reason Why the banner was closed. Value will be passed to\n   *     events.CLOSING and events.CLOSED via the `event.detail.reason`\n   *     property. Standard values are CloseReason.PRIMARY and\n   *     CloseReason.SECONDARY, but CloseReason.UNSPECIFIED is provided for\n   *     custom handling of programmatic closing of the banner.\n   */\n  close(reason: CloseReason) {\n    if (!this.isOpened) {\n      // Avoid redundant close calls (and events), e.g. repeated interactions as\n      // the banner is animating closed\n      return;\n    }\n\n    cancelAnimationFrame(this.animationFrame);\n    this.animationFrame = 0;\n\n    this.isOpened = false;\n    this.adapter.notifyClosing(reason);\n    this.adapter.addClass(CLOSING);\n    this.adapter.setStyleProperty('height', '0');\n    this.adapter.removeClass(OPEN);\n    this.adapter.removeClass(OPENING);\n\n    clearTimeout(this.animationTimer);\n    this.animationTimer = setTimeout(() => {\n      this.adapter.releaseFocus();\n      this.handleAnimationTimerEnd();\n      this.adapter.notifyClosed(reason);\n    }, numbers.BANNER_ANIMATION_CLOSE_TIME_MS);\n  }\n\n  isOpen(): boolean {\n    return this.isOpened;\n  }\n\n  handlePrimaryActionClick() {\n    this.close(CloseReason.PRIMARY);\n  }\n\n  handleSecondaryActionClick() {\n    this.close(CloseReason.SECONDARY);\n  }\n\n  layout() {\n    const contentHeight = this.adapter.getContentHeight();\n    this.adapter.setStyleProperty('height', `${contentHeight}px`);\n  }\n\n  private handleAnimationTimerEnd() {\n    this.animationTimer = 0;\n    this.adapter.removeClass(OPENING);\n    this.adapter.removeClass(CLOSING);\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from './foundation';\nimport {CustomEventListener, EventType, SpecificEventListener} from './types';\n\nexport class MDCComponent<FoundationType extends MDCFoundation> {\n  static attachTo(root: Element): MDCComponent<MDCFoundation<{}>> {\n    // Subclasses which extend MDCBase should provide an attachTo() method that takes a root element and\n    // returns an instantiated component with its root set to that element. Also note that in the cases of\n    // subclasses, an explicit foundation class will not have to be passed in; it will simply be initialized\n    // from getDefaultFoundation().\n    return new MDCComponent(root, new MDCFoundation({}));\n  }\n\n  protected foundation: FoundationType;\n\n  constructor(\n      public root: Element, foundation?: FoundationType, ...args: unknown[]) {\n    this.initialize(...args);\n    // Note that we initialize foundation here and not within the constructor's\n    // default param so that this.root is defined and can be used within the\n    // foundation class.\n    this.foundation =\n        foundation === undefined ? this.getDefaultFoundation() : foundation;\n    this.foundation.init();\n    this.initialSyncWithDOM();\n  }\n\n  /* istanbul ignore next: method param only exists for typing purposes; it does not need to be unit tested */\n  initialize(..._args: Array<unknown>) {\n    // Subclasses can override this to do any additional setup work that would be considered part of a\n    // \"constructor\". Essentially, it is a hook into the parent constructor before the foundation is\n    // initialized. Any additional arguments besides root and foundation will be passed in here.\n  }\n\n  getDefaultFoundation(): FoundationType {\n    // Subclasses must override this method to return a properly configured foundation class for the\n    // component.\n    throw new Error('Subclasses must override getDefaultFoundation to return a properly configured ' +\n        'foundation class');\n  }\n\n  initialSyncWithDOM() {\n    // Subclasses should override this method if they need to perform work to synchronize with a host DOM\n    // object. An example of this would be a form control wrapper that needs to synchronize its internal state\n    // to some property or attribute of the host DOM. Please note: this is *not* the place to perform DOM\n    // reads/writes that would cause layout / paint, as this is called synchronously from within the constructor.\n  }\n\n  destroy() {\n    // Subclasses may implement this method to release any resources / deregister any listeners they have\n    // attached. An example of this might be deregistering a resize event from the window object.\n    this.foundation.destroy();\n  }\n\n  /**\n   * Wrapper method to add an event listener to the component's root element. This is most useful when\n   * listening for custom events.\n   */\n  listen<K extends EventType>(\n    evtType: K, handler: SpecificEventListener<K>, options?: AddEventListenerOptions | boolean): void;\n  listen<E extends Event>(\n    evtType: string, handler: CustomEventListener<E>, options?: AddEventListenerOptions | boolean): void;\n  listen(evtType: string, handler: EventListener, options?: AddEventListenerOptions | boolean) {\n    this.root.addEventListener(evtType, handler, options);\n  }\n\n  /**\n   * Wrapper method to remove an event listener to the component's root element. This is most useful when\n   * unlistening for custom events.\n   */\n  unlisten<K extends EventType>(\n    evtType: K, handler: SpecificEventListener<K>, options?: AddEventListenerOptions | boolean): void;\n  unlisten<E extends Event>(\n    evtType: string, handler: CustomEventListener<E>, options?: AddEventListenerOptions | boolean): void;\n  unlisten(evtType: string, handler: EventListener, options?: AddEventListenerOptions | boolean) {\n    this.root.removeEventListener(evtType, handler, options);\n  }\n\n  /**\n   * Fires a cross-browser-compatible custom event from the component root of the given type, with the given data.\n   */\n  emit<T extends object>(evtType: string, evtData: T, shouldBubble = false) {\n    let evt: CustomEvent<T>;\n    if (typeof CustomEvent === 'function') {\n      evt = new CustomEvent<T>(evtType, {\n        bubbles: shouldBubble,\n        detail: evtData,\n      });\n    } else {\n      evt = document.createEvent('CustomEvent');\n      evt.initCustomEvent(evtType, shouldBubble, false, evtData);\n    }\n\n    this.root.dispatchEvent(evt);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCComponent;\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport class MDCFoundation<AdapterType extends {} = {}> {\n  static get cssClasses(): { [key: string]: string } {\n    // Classes extending MDCFoundation should implement this method to return an object which exports every\n    // CSS class the foundation class needs as a property. e.g. {ACTIVE: 'mdc-component--active'}\n    return {};\n  }\n\n  static get strings(): { [key: string]: string } {\n    // Classes extending MDCFoundation should implement this method to return an object which exports all\n    // semantic strings as constants. e.g. {ARIA_ROLE: 'tablist'}\n    return {};\n  }\n\n  static get numbers(): { [key: string]: number } {\n    // Classes extending MDCFoundation should implement this method to return an object which exports all\n    // of its semantic numbers as constants. e.g. {ANIMATION_DELAY_MS: 350}\n    return {};\n  }\n\n  static get defaultAdapter(): {} {\n    // Classes extending MDCFoundation may choose to implement this getter in order to provide a convenient\n    // way of viewing the necessary methods of an adapter. In the future, this could also be used for adapter\n    // validation.\n    return {};\n  }\n\n  constructor(protected adapter: AdapterType = {} as AdapterType) {}\n\n  init() {\n    // Subclasses should override this method to perform initialization routines (registering events, etc.)\n  }\n\n  destroy() {\n    // Subclasses should override this method to perform de-initialization routines (de-registering events, etc.)\n  }\n}\n\n/**\n * The constructor for MDCFoundation.\n */\nexport interface MDCFoundationConstructor<AdapterType extends object = any> {\n  new(adapter: AdapterType): MDCFoundation<AdapterType>;\n  readonly prototype: MDCFoundation<AdapterType>;\n}\n\n/**\n * The deprecated constructor for MDCFoundation.\n */\nexport interface MDCFoundationDeprecatedConstructor<AdapterType extends object = any> {\n  readonly cssClasses: Record<string, string>;\n  readonly strings: Record<string, string>;\n  readonly numbers: Record<string, number>;\n  readonly defaultAdapter: AdapterType;\n\n  new(adapter?: Partial<AdapterType>): MDCFoundation<AdapterType>;\n  readonly prototype: MDCFoundation<AdapterType>;\n}\n\n/**\n * Retrieves the AdapaterType from the provided MDCFoundation generic type.\n */\nexport type MDCFoundationAdapter<T> =\n    T extends MDCFoundation<infer A>? A : never;\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './component';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2021 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from './foundation';\nimport {observeProperty, Observer, ObserverRecord, setObserversEnabled} from './observer';\n\nexport class MDCObserverFoundation<Adapter> extends MDCFoundation<Adapter> {\n  /** A set of cleanup functions to unobserve changes. */\n  protected unobserves = new Set<Function>();\n\n  constructor(adapter: Adapter) {\n    super(adapter);\n  }\n\n  destroy() {\n    super.destroy();\n    this.unobserve();\n  }\n\n  /**\n   * Observe a target's properties for changes using the provided map of\n   * property names and observer functions.\n   *\n   * @template T The target type.\n   * @param target - The target to observe.\n   * @param observers - An object whose keys are target properties and values\n   *     are observer functions that are called when the associated property\n   *     changes.\n   * @return A cleanup function that can be called to unobserve the\n   *     target.\n   */\n  protected observe<T extends object>(\n      target: T, observers: ObserverRecord<T, this>) {\n    const cleanup: Function[] = [];\n    for (const property of Object.keys(observers) as Array<keyof T>) {\n      const observer = observers[property]!.bind(this);\n      cleanup.push(this.observeProperty(target, property, observer));\n    }\n\n    const unobserve = () => {\n      for (const cleanupFn of cleanup) {\n        cleanupFn();\n      }\n\n      this.unobserves.delete(unobserve);\n    };\n\n    this.unobserves.add(unobserve);\n    return unobserve;\n  }\n\n  /**\n   * Observe a target's property for changes. When a property changes, the\n   * provided `Observer` function will be invoked with the properties current\n   * and previous values.\n   *\n   * The returned cleanup function will stop listening to changes for the\n   * provided `Observer`.\n   *\n   * @template T The observed target type.\n   * @template K The observed property.\n   * @param target - The target to observe.\n   * @param property - The property of the target to observe.\n   * @param observer - An observer function to invoke each time the property\n   *     changes.\n   * @return A cleanup function that will stop observing changes for the\n   *     provided `Observer`.\n   */\n  protected observeProperty<T extends object, K extends keyof T>(\n      target: T, property: K, observer: Observer<T, K>) {\n    return observeProperty(target, property, observer);\n  }\n\n  /**\n   * Enables or disables all observers for the provided target. Disabling\n   * observers will prevent them from being called until they are re-enabled.\n   *\n   * @param target - The target to enable or disable observers for.\n   * @param enabled - Whether or not observers should be called.\n   */\n  protected setObserversEnabled(target: object, enabled: boolean) {\n    setObserversEnabled(target, enabled);\n  }\n\n  /**\n   * Clean up all observers and stop listening for property changes.\n   */\n  protected unobserve() {\n    // Iterate over a copy since unobserve() will remove themselves from the set\n    for (const unobserve of [...this.unobserves]) {\n      unobserve();\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2021 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {Constructor} from './types';\n\n/**\n * A class that can observe targets and perform cleanup logic. Classes may\n * implement this using the `mdcObserver()` mixin.\n */\nexport interface MDCObserver {\n  /**\n   * Observe a target's properties for changes using the provided map of\n   * property names and observer functions.\n   *\n   * @template T The target type.\n   * @param target - The target to observe.\n   * @param observers - An object whose keys are target properties and values\n   *     are observer functions that are called when the associated property\n   *     changes.\n   * @return A cleanup function that can be called to unobserve the\n   *     target.\n   */\n  observe<T extends object>(target: T, observers: ObserverRecord<T, this>):\n      () => void;\n\n  /**\n   * Enables or disables all observers for the provided target. Disabling\n   * observers will prevent them from being called until they are re-enabled.\n   *\n   * @param target - The target to enable or disable observers for.\n   * @param enabled - Whether or not observers should be called.\n   */\n  setObserversEnabled(target: object, enabled: boolean): void;\n\n  /**\n   * Clean up all observers and stop listening for property changes.\n   */\n  unobserve(): void;\n}\n\n/**\n * A function used to observe property changes on a target.\n *\n * @template T The observed target type.\n * @template K The observed property.\n * @template This The `this` context of the observer function.\n * @param current - The current value of the property.\n * @param previous - The previous value of the property.\n */\nexport type Observer<T extends object, K extends keyof T = keyof T,\n                                                 This = unknown> =\n    (this: This, current: T[K], previous: T[K]) => void;\n\n/**\n * An object map whose keys are properties of a target to observe and values\n * are `Observer` functions for each property.\n *\n * @template T The observed target type.\n * @template This The `this` context of observer functions.\n */\nexport type ObserverRecord<T extends object, This = unknown> = {\n  [K in keyof T]?: Observer<T, K, This>;\n};\n\n/**\n * Mixin to add `MDCObserver` functionality.\n *\n * @deprecated Prefer MDCObserverFoundation for stricter closure compliance.\n * @return A class with `MDCObserver` functionality.\n */\nexport function mdcObserver(): Constructor<MDCObserver>;\n\n/**\n * Mixin to add `MDCObserver` functionality to a base class.\n *\n * @deprecated Prefer MDCObserverFoundation for stricter closure compliance.\n * @template T Base class instance type. Specify this generic if the base class\n *     itself has generics that cannot be inferred.\n * @template C Base class constructor type.\n * @param baseClass - Base class.\n * @return A class that extends the optional base class with `MDCObserver`\n *     functionality.\n */\nexport function mdcObserver<T, C extends Constructor<T>>(baseClass: C):\n    Constructor<MDCObserver>&Constructor<T>&C;\n\n/**\n * Mixin to add `MDCObserver` functionality to an optional base class.\n *\n * @deprecated Prefer MDCObserverFoundation for stricter closure compliance.\n * @template C Optional base class constructor type.\n * @param baseClass - Optional base class.\n * @return A class that extends the optional base class with `MDCObserver`\n *     functionality.\n */\nexport function mdcObserver<C extends Constructor>(\n    baseClass: C = class {} as C) {\n  // Mixin classes cannot use private members and Symbol() cannot be used in 3P\n  // for IE11.\n  const unobserveMap = new WeakMap<MDCObserver, Function[]>();\n  return class MDCObserver extends baseClass implements MDCObserver {\n    observe<T extends object>(target: T, observers: ObserverRecord<T, this>) {\n      const cleanup: Function[] = [];\n      for (const property of Object.keys(observers) as Array<keyof T>) {\n        const observer = observers[property]!.bind(this);\n        cleanup.push(observeProperty(target, property, observer));\n      }\n\n      const unobserve = () => {\n        for (const cleanupFn of cleanup) {\n          cleanupFn();\n        }\n        const unobserves = unobserveMap.get(this) || [];\n        const index = unobserves.indexOf(unobserve);\n        if (index > -1) {\n          unobserves.splice(index, 1);\n        }\n      };\n\n      let unobserves = unobserveMap.get(this);\n      if (!unobserves) {\n        unobserves = [];\n        unobserveMap.set(this, unobserves);\n      }\n\n      unobserves.push(unobserve);\n      return unobserve;\n    }\n\n    setObserversEnabled(target: object, enabled: boolean) {\n      setObserversEnabled(target, enabled);\n    }\n\n    unobserve() {\n      // Iterate over a copy since unobserve() will remove themselves from the\n      // array\n      const unobserves = unobserveMap.get(this) || [];\n      for (const unobserve of [...unobserves]) {\n        unobserve();\n      }\n    }\n  };\n}\n\n/**\n * A manager for observers listening to a target. A target's `prototype` is its\n * `TargetObservers` instance.\n *\n * @template T The observed target type.\n */\ninterface TargetObservers<T extends object> {\n  /**\n   * Indicates whether or not observers for this target are enabled. If\n   * disabled, observers will not be called in response to target property\n   * changes.\n   */\n  isEnabled: boolean;\n\n  /**\n   * Retrieves all observers for a given target property.\n   *\n   * @template K The target property key.\n   * @param key - The property to retrieve observers for.\n   * @return An array of observers for the provided target property.\n   */\n  getObservers<K extends keyof T>(key: K): Array<Observer<T, K>>;\n\n  /**\n   * A Set of properties that have been installed (their getter/setter) replaced\n   * to connect with the `TargetObservers`. This prevents multiple installations\n   * of the same property.\n   */\n  installedProperties: Set<keyof T>;\n}\n\n/**\n * Observe a target's property for changes. When a property changes, the\n * provided `Observer` function will be invoked with the properties current and\n * previous values.\n *\n * The returned cleanup function will stop listening to changes for the\n * provided `Observer`.\n *\n * @template T The observed target type.\n * @template K The observed property.\n * @param target - The target to observe.\n * @param property - The property of the target to observe.\n * @param observer - An observer function to invoke each time the property\n *     changes.\n * @return A cleanup function that will stop observing changes for the provided\n *     `Observer`.\n */\nexport function observeProperty<T extends object, K extends keyof T>(\n    target: T, property: K, observer: Observer<T, K>) {\n  const targetObservers = installObserver(target, property);\n  const observers = targetObservers.getObservers(property);\n  observers.push(observer);\n  return () => {\n    observers.splice(observers.indexOf(observer), 1);\n  };\n}\n\n/**\n * A Map of all `TargetObservers` that have been installed.\n */\nconst allTargetObservers = new WeakMap<object, TargetObservers<any>>();\n\n/**\n * Installs a `TargetObservers` for the provided target (if not already\n * installed), and replaces the given property with a getter and setter that\n * will respond to changes and call `TargetObservers`.\n *\n * Subsequent calls to `installObserver()` with the same target and property\n * will not override the property's previously installed getter/setter.\n *\n * @template T The observed target type.\n * @template K The observed property to create a getter/setter for.\n * @param target - The target to observe.\n * @param property - The property to create a getter/setter for, if needed.\n * @return The installed `TargetObservers` for the provided target.\n */\nfunction installObserver<T extends object, K extends keyof T>(\n    target: T, property: K): TargetObservers<T> {\n  const observersMap = new Map<keyof T, Array<Observer<T>>>();\n\n  if (!allTargetObservers.has(target)) {\n    allTargetObservers.set(target, {\n      isEnabled: true,\n      getObservers(key) {\n        const observers = observersMap.get(key) || [];\n        if (!observersMap.has(key)) {\n          observersMap.set(key, observers);\n        }\n\n        return observers;\n      },\n      installedProperties: new Set()\n    } as TargetObservers<T>);\n  }\n\n  const targetObservers = allTargetObservers.get(target)!;\n  if (targetObservers.installedProperties.has(property)) {\n    // The getter/setter has already been replaced for this property\n    return targetObservers;\n  }\n\n  // Retrieve (or create if it's a plain property) the original descriptor from\n  // the target...\n  const descriptor = getDescriptor(target, property) || {\n    configurable: true,\n    enumerable: true,\n    value: target[property],\n    writable: true\n  };\n\n  // ...and create a copy that will be used for the observer.\n  const observedDescriptor = {...descriptor};\n  let {get: descGet, set: descSet} = descriptor;\n  if ('value' in descriptor) {\n    // The descriptor is a simple value (not a getter/setter).\n    // For our observer descriptor that we copied, delete the value/writable\n    // properties, since they are incompatible with the get/set properties\n    // for descriptors.\n    delete observedDescriptor.value;\n    delete observedDescriptor.writable;\n\n    // Set up a simple getter...\n    let value = descriptor.value as T[K];\n    descGet = () => value;\n\n    // ...and setter (if the original property was writable).\n    if (descriptor.writable) {\n      descSet = (newValue) => {\n        value = newValue;\n      };\n    }\n  }\n\n  if (descGet) {\n    observedDescriptor.get = function(this: T) {\n      // `this as T` needed for closure conformance\n      return descGet!.call(this as T);\n    };\n  }\n\n  if (descSet) {\n    observedDescriptor.set = function(this: T, newValue: T[K]) {\n      // `thus as T` needed for closure conformance\n      const previous = descGet ? descGet.call(this as T) : newValue;\n      descSet!.call(this as T, newValue);\n      if (targetObservers.isEnabled && (!descGet || newValue !== previous)) {\n        for (const observer of targetObservers.getObservers(property)) {\n          observer(newValue, previous);\n        }\n      }\n    };\n  }\n\n  targetObservers.installedProperties.add(property);\n  Object.defineProperty(target, property, observedDescriptor);\n  return targetObservers;\n}\n\n/**\n * Retrieves the descriptor for a property from the provided target. This\n * function will walk up the target's prototype chain to search for the\n * descriptor.\n *\n * @template T The target type.\n * @template K The property type.\n * @param target - The target to retrieve a descriptor from.\n * @param property - The name of the property to retrieve a descriptor for.\n * @return the descriptor, or undefined if it does not exist. Keep in mind that\n *     plain properties may not have a descriptor defined.\n */\nexport function getDescriptor<T extends object, K extends keyof T>(\n    target: T, property: K) {\n  let descriptorTarget: object|null = target;\n  let descriptor: TypedPropertyDescriptor<T[K]>|undefined;\n  while (descriptorTarget) {\n    descriptor = Object.getOwnPropertyDescriptor(descriptorTarget, property);\n    if (descriptor) {\n      break;\n    }\n\n    // Walk up the instance's prototype chain in case the property is declared\n    // on a superclass.\n    descriptorTarget = Object.getPrototypeOf(descriptorTarget);\n  }\n\n  return descriptor;\n}\n\n/**\n * Enables or disables all observers for a provided target. Changes to observed\n * properties will not call any observers when disabled.\n *\n * @template T The observed target type.\n * @param target - The target to enable or disable observers for.\n * @param enabled - True to enable or false to disable observers.\n */\nexport function setObserversEnabled<T extends object>(\n    target: T, enabled: boolean) {\n  const targetObservers = allTargetObservers.get(target);\n  if (targetObservers) {\n    targetObservers.isEnabled = enabled;\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport type EventType = keyof GlobalEventHandlersEventMap;\nexport type SpecificEventListener<K extends EventType> = (evt: GlobalEventHandlersEventMap[K]) => void;\nexport type CustomEventListener<E extends Event> = (evt: E) => void;\nexport type WindowEventType = keyof WindowEventMap;\nexport type SpecificWindowEventListener<K extends WindowEventType> =\n    (evt: WindowEventMap[K]) => void;\n\n// `any` is required for mixin constructors\n// tslint:disable:no-any\n/**\n * A generic type for the constructor of an instance type. Note that this type\n * does not preserve accurate constructor parameters.\n *\n * @template T The instance type.\n */\nexport type Constructor<T = any> = {\n  new (...args: any[]): T;\n};\n// tslint:enable:no-any\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCCheckboxAdapter {\n  addClass(className: string): void;\n  forceLayout(): void;\n  hasNativeControl(): boolean;\n  isAttachedToDOM(): boolean;\n  isChecked(): boolean;\n  isIndeterminate(): boolean;\n  removeClass(className: string): void;\n  removeNativeControlAttr(attr: string): void;\n  setNativeControlAttr(attr: string, value: string): void;\n  setNativeControlDisabled(disabled: boolean): void;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {getCorrectEventName} from '@material/animation/util';\nimport {MDCComponent} from '@material/base/component';\nimport {applyPassive} from '@material/dom/events';\nimport {matches} from '@material/dom/ponyfill';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\n\nimport {MDCCheckboxAdapter} from './adapter';\nimport {strings} from './constants';\nimport {MDCCheckboxFoundation} from './foundation';\n\n/**\n * This type is needed for compatibility with Closure Compiler.\n */\ntype PropertyDescriptorGetter = (() => unknown) | undefined;\n\nconst CB_PROTO_PROPS = ['checked', 'indeterminate'];\n\nexport type MDCCheckboxFactory = (el: Element, foundation?: MDCCheckboxFoundation) => MDCCheckbox;\n\nexport class MDCCheckbox extends MDCComponent<MDCCheckboxFoundation> implements MDCRippleCapableSurface {\n  static attachTo(root: Element) {\n    return new MDCCheckbox(root);\n  }\n\n  get ripple(): MDCRipple {\n    return this.rippleSurface;\n  }\n\n  get checked(): boolean {\n    return this.getNativeControl().checked;\n  }\n\n  set checked(checked: boolean) {\n    this.getNativeControl().checked = checked;\n  }\n\n  get indeterminate(): boolean {\n    return this.getNativeControl().indeterminate;\n  }\n\n  set indeterminate(indeterminate: boolean) {\n    this.getNativeControl().indeterminate = indeterminate;\n  }\n\n  get disabled(): boolean {\n    return this.getNativeControl().disabled;\n  }\n\n  set disabled(disabled: boolean) {\n    this.foundation.setDisabled(disabled);\n  }\n\n  get value(): string {\n    return this.getNativeControl().value;\n  }\n\n  set value(value: string) {\n    this.getNativeControl().value = value;\n  }\n\n  private readonly rippleSurface: MDCRipple = this.createRipple();\n  private handleChange!: EventListener;  // assigned in initialSyncWithDOM()\n  private handleAnimationEnd!:\n      EventListener;  // assigned in initialSyncWithDOM()\n\n  initialize() {\n    const {DATA_INDETERMINATE_ATTR} = strings;\n    this.getNativeControl().indeterminate =\n        this.getNativeControl().getAttribute(DATA_INDETERMINATE_ATTR) ===\n        'true';\n    this.getNativeControl().removeAttribute(DATA_INDETERMINATE_ATTR);\n  }\n\n  initialSyncWithDOM() {\n    this.handleChange = () => {\n      this.foundation.handleChange();\n    };\n    this.handleAnimationEnd = () => {\n      this.foundation.handleAnimationEnd();\n    };\n    this.getNativeControl().addEventListener('change', this.handleChange);\n    this.listen(\n        getCorrectEventName(window, 'animationend'), this.handleAnimationEnd);\n    this.installPropertyChangeHooks();\n  }\n\n  destroy() {\n    this.rippleSurface.destroy();\n    this.getNativeControl().removeEventListener('change', this.handleChange);\n    this.unlisten(\n        getCorrectEventName(window, 'animationend'), this.handleAnimationEnd);\n    this.uninstallPropertyChangeHooks();\n    super.destroy();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCCheckboxAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      forceLayout: () => (this.root as HTMLElement).offsetWidth,\n      hasNativeControl: () => !!this.getNativeControl(),\n      isAttachedToDOM: () => Boolean(this.root.parentNode),\n      isChecked: () => this.checked,\n      isIndeterminate: () => this.indeterminate,\n      removeClass: (className) => {\n        this.root.classList.remove(className);\n      },\n      removeNativeControlAttr: (attr) => {\n        this.getNativeControl().removeAttribute(attr);\n      },\n      setNativeControlAttr: (attr, value) => {\n        this.getNativeControl().setAttribute(attr, value);\n      },\n      setNativeControlDisabled: (disabled) => {\n        this.getNativeControl().disabled = disabled;\n      },\n    };\n    return new MDCCheckboxFoundation(adapter);\n  }\n\n  private createRipple(): MDCRipple {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCRippleAdapter = {\n      ...MDCRipple.createAdapter(this),\n      deregisterInteractionHandler: (evtType, handler) => {\n        this.getNativeControl().removeEventListener(\n            evtType, handler, applyPassive());\n      },\n      isSurfaceActive: () => matches(this.getNativeControl(), ':active'),\n      isUnbounded: () => true,\n      registerInteractionHandler: (evtType, handler) => {\n        this.getNativeControl().addEventListener(\n            evtType, handler, applyPassive());\n      },\n    };\n    return new MDCRipple(this.root, new MDCRippleFoundation(adapter));\n  }\n\n  private installPropertyChangeHooks() {\n    const nativeCb = this.getNativeControl();\n    const cbProto = Object.getPrototypeOf(nativeCb);\n\n    for (const controlState of CB_PROTO_PROPS) {\n      const desc = Object.getOwnPropertyDescriptor(cbProto, controlState);\n      // We have to check for this descriptor, since some browsers (Safari) don't support its return.\n      // See: https://bugs.webkit.org/show_bug.cgi?id=49739\n      if (!validDescriptor(desc)) {\n        return;\n      }\n\n      // Type cast is needed for compatibility with Closure Compiler.\n      const nativeGetter = (desc as {get: PropertyDescriptorGetter}).get;\n\n      const nativeCbDesc = {\n        configurable: desc.configurable,\n        enumerable: desc.enumerable,\n        get: nativeGetter,\n        set: (state: boolean) => {\n          desc.set!.call(nativeCb, state);\n          this.foundation.handleChange();\n        },\n      };\n      Object.defineProperty(nativeCb, controlState, nativeCbDesc);\n    }\n  }\n\n  private uninstallPropertyChangeHooks() {\n    const nativeCb = this.getNativeControl();\n    const cbProto = Object.getPrototypeOf(nativeCb);\n\n    for (const controlState of CB_PROTO_PROPS) {\n      const desc = Object.getOwnPropertyDescriptor(cbProto, controlState);\n      if (!validDescriptor(desc)) {\n        return;\n      }\n      Object.defineProperty(nativeCb, controlState, desc);\n    }\n  }\n\n  private getNativeControl(): HTMLInputElement {\n    const {NATIVE_CONTROL_SELECTOR} = strings;\n    const el =\n        this.root.querySelector<HTMLInputElement>(NATIVE_CONTROL_SELECTOR);\n    if (!el) {\n      throw new Error(`Checkbox component requires a ${NATIVE_CONTROL_SELECTOR} element`);\n    }\n    return el;\n  }\n}\n\nfunction validDescriptor(inputPropDesc: PropertyDescriptor | undefined): inputPropDesc is PropertyDescriptor {\n  return !!inputPropDesc && typeof inputPropDesc.set === 'function';\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const cssClasses = {\n  ANIM_CHECKED_INDETERMINATE: 'mdc-checkbox--anim-checked-indeterminate',\n  ANIM_CHECKED_UNCHECKED: 'mdc-checkbox--anim-checked-unchecked',\n  ANIM_INDETERMINATE_CHECKED: 'mdc-checkbox--anim-indeterminate-checked',\n  ANIM_INDETERMINATE_UNCHECKED: 'mdc-checkbox--anim-indeterminate-unchecked',\n  ANIM_UNCHECKED_CHECKED: 'mdc-checkbox--anim-unchecked-checked',\n  ANIM_UNCHECKED_INDETERMINATE: 'mdc-checkbox--anim-unchecked-indeterminate',\n  BACKGROUND: 'mdc-checkbox__background',\n  CHECKED: 'mdc-checkbox--checked',\n  CHECKMARK: 'mdc-checkbox__checkmark',\n  CHECKMARK_PATH: 'mdc-checkbox__checkmark-path',\n  DISABLED: 'mdc-checkbox--disabled',\n  INDETERMINATE: 'mdc-checkbox--indeterminate',\n  MIXEDMARK: 'mdc-checkbox__mixedmark',\n  NATIVE_CONTROL: 'mdc-checkbox__native-control',\n  ROOT: 'mdc-checkbox',\n  SELECTED: 'mdc-checkbox--selected',\n  UPGRADED: 'mdc-checkbox--upgraded',\n};\n\nexport const strings = {\n  ARIA_CHECKED_ATTR: 'aria-checked',\n  ARIA_CHECKED_INDETERMINATE_VALUE: 'mixed',\n  DATA_INDETERMINATE_ATTR: 'data-indeterminate',\n  NATIVE_CONTROL_SELECTOR: '.mdc-checkbox__native-control',\n  TRANSITION_STATE_CHECKED: 'checked',\n  TRANSITION_STATE_INDETERMINATE: 'indeterminate',\n  TRANSITION_STATE_INIT: 'init',\n  TRANSITION_STATE_UNCHECKED: 'unchecked',\n};\n\nexport const numbers = {\n  ANIM_END_LATCH_MS: 250,\n};\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCCheckboxAdapter} from './adapter';\nimport {cssClasses, numbers, strings} from './constants';\n\nexport class MDCCheckboxFoundation extends MDCFoundation<MDCCheckboxAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get defaultAdapter(): MDCCheckboxAdapter {\n    return {\n      addClass: () => undefined,\n      forceLayout: () => undefined,\n      hasNativeControl: () => false,\n      isAttachedToDOM: () => false,\n      isChecked: () => false,\n      isIndeterminate: () => false,\n      removeClass: () => undefined,\n      removeNativeControlAttr: () => undefined,\n      setNativeControlAttr: () => undefined,\n      setNativeControlDisabled: () => undefined,\n    };\n  }\n\n  private currentCheckState = strings.TRANSITION_STATE_INIT;\n  private currentAnimationClass = '';\n  private animEndLatchTimer = 0;\n  private enableAnimationEndHandler = false;\n\n  constructor(adapter?: Partial<MDCCheckboxAdapter>) {\n    super({...MDCCheckboxFoundation.defaultAdapter, ...adapter});\n  }\n\n  init() {\n    this.currentCheckState = this.determineCheckState();\n    this.updateAriaChecked();\n    this.adapter.addClass(cssClasses.UPGRADED);\n  }\n\n  destroy() {\n    clearTimeout(this.animEndLatchTimer);\n  }\n\n  setDisabled(disabled: boolean) {\n    this.adapter.setNativeControlDisabled(disabled);\n    if (disabled) {\n      this.adapter.addClass(cssClasses.DISABLED);\n    } else {\n      this.adapter.removeClass(cssClasses.DISABLED);\n    }\n  }\n\n  /**\n   * Handles the animationend event for the checkbox\n   */\n  handleAnimationEnd() {\n    if (!this.enableAnimationEndHandler) {\n      return;\n    }\n\n    clearTimeout(this.animEndLatchTimer);\n\n    this.animEndLatchTimer = setTimeout(() => {\n      this.adapter.removeClass(this.currentAnimationClass);\n      this.enableAnimationEndHandler = false;\n    }, numbers.ANIM_END_LATCH_MS);\n  }\n\n  /**\n   * Handles the change event for the checkbox\n   */\n  handleChange() {\n    this.transitionCheckState();\n  }\n\n  private transitionCheckState() {\n    if (!this.adapter.hasNativeControl()) {\n      return;\n    }\n    const oldState = this.currentCheckState;\n    const newState = this.determineCheckState();\n\n    if (oldState === newState) {\n      return;\n    }\n\n    this.updateAriaChecked();\n\n    const {TRANSITION_STATE_UNCHECKED} = strings;\n    const {SELECTED} = cssClasses;\n    if (newState === TRANSITION_STATE_UNCHECKED) {\n      this.adapter.removeClass(SELECTED);\n    } else {\n      this.adapter.addClass(SELECTED);\n    }\n\n    // Check to ensure that there isn't a previously existing animation class, in case for example\n    // the user interacted with the checkbox before the animation was finished.\n    if (this.currentAnimationClass.length > 0) {\n      clearTimeout(this.animEndLatchTimer);\n      this.adapter.forceLayout();\n      this.adapter.removeClass(this.currentAnimationClass);\n    }\n\n    this.currentAnimationClass =\n        this.getTransitionAnimationClass(oldState, newState);\n    this.currentCheckState = newState;\n\n    // Check for parentNode so that animations are only run when the element is attached\n    // to the DOM.\n    if (this.adapter.isAttachedToDOM() &&\n        this.currentAnimationClass.length > 0) {\n      this.adapter.addClass(this.currentAnimationClass);\n      this.enableAnimationEndHandler = true;\n    }\n  }\n\n  private determineCheckState(): string {\n    const {\n      TRANSITION_STATE_INDETERMINATE,\n      TRANSITION_STATE_CHECKED,\n      TRANSITION_STATE_UNCHECKED,\n    } = strings;\n\n    if (this.adapter.isIndeterminate()) {\n      return TRANSITION_STATE_INDETERMINATE;\n    }\n    return this.adapter.isChecked() ? TRANSITION_STATE_CHECKED :\n                                      TRANSITION_STATE_UNCHECKED;\n  }\n\n  private getTransitionAnimationClass(oldState: string, newState: string):\n      string {\n    const {\n      TRANSITION_STATE_INIT,\n      TRANSITION_STATE_CHECKED,\n      TRANSITION_STATE_UNCHECKED,\n    } = strings;\n\n    const {\n      ANIM_UNCHECKED_CHECKED,\n      ANIM_UNCHECKED_INDETERMINATE,\n      ANIM_CHECKED_UNCHECKED,\n      ANIM_CHECKED_INDETERMINATE,\n      ANIM_INDETERMINATE_CHECKED,\n      ANIM_INDETERMINATE_UNCHECKED,\n    } = MDCCheckboxFoundation.cssClasses;\n\n    switch (oldState) {\n      case TRANSITION_STATE_INIT:\n        if (newState === TRANSITION_STATE_UNCHECKED) {\n          return '';\n        }\n        return newState === TRANSITION_STATE_CHECKED ? ANIM_INDETERMINATE_CHECKED : ANIM_INDETERMINATE_UNCHECKED;\n      case TRANSITION_STATE_UNCHECKED:\n        return newState === TRANSITION_STATE_CHECKED ? ANIM_UNCHECKED_CHECKED : ANIM_UNCHECKED_INDETERMINATE;\n      case TRANSITION_STATE_CHECKED:\n        return newState === TRANSITION_STATE_UNCHECKED ? ANIM_CHECKED_UNCHECKED : ANIM_CHECKED_INDETERMINATE;\n      default: // TRANSITION_STATE_INDETERMINATE\n        return newState === TRANSITION_STATE_CHECKED ? ANIM_INDETERMINATE_CHECKED : ANIM_INDETERMINATE_UNCHECKED;\n    }\n  }\n\n  private updateAriaChecked() {\n    // Ensure aria-checked is set to mixed if checkbox is in indeterminate state.\n    if (this.adapter.isIndeterminate()) {\n      this.adapter.setNativeControlAttr(\n          strings.ARIA_CHECKED_ATTR, strings.ARIA_CHECKED_INDETERMINATE_VALUE);\n    } else {\n      // The on/off state does not need to keep track of aria-checked, since\n      // the screenreader uses the checked property on the checkbox element.\n      this.adapter.removeNativeControlAttr(strings.ARIA_CHECKED_ATTR);\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCCheckboxFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCChipSetAdapter {\n  /**\n   * @return true if the root element contains the given class name.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Removes the chip with the given index from the chip set.\n   * Make sure to remove it from the chip list, too.\n   */\n  removeChipAtIndex(index: number): void;\n\n  /**\n   * Sets the selected state of the chip at the given index.\n   */\n  selectChipAtIndex(index: number, isSelected: boolean, shouldNotifyClients: boolean): void;\n\n  /**\n   * Returns the index of the chip at the given ID.\n   * @param chipId the unique ID of the chip\n   * @return the numerical index of the chip with the matching id or -1.\n   */\n  getIndexOfChipById(chipId: string): number;\n\n  /**\n   * Calls Chip#focusPrimaryAction() on the chip at the given index.\n   * @param index the index of the chip\n   */\n  focusChipPrimaryActionAtIndex(index: number): void;\n\n  /**\n   * Calls Chip#focusTrailingAction() on the chip at the given index.\n   * @param index the index of the chip\n   */\n  focusChipTrailingActionAtIndex(index: number): void;\n\n  /**\n   * Removes focus from the chip at the given index.\n   * @param index the index of the chip\n   */\n  removeFocusFromChipAtIndex(index: number): void;\n\n  /**\n   * @return true if the text direction is RTL.\n   */\n  isRTL(): boolean;\n\n  /**\n   * @return the number of chips in the chip set.\n   */\n  getChipListCount(): number;\n\n  /**\n   * Announces the message via an aria-live region.\n   */\n  announceMessage(message: string): void;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {announce} from '@material/dom/announce';\nimport {MDCChip, MDCChipFactory} from '../chip/component';\nimport {MDCChipFoundation} from '../chip/foundation';\nimport {MDCChipInteractionEvent, MDCChipNavigationEvent, MDCChipRemovalEvent,\n    MDCChipSelectionEvent} from '../chip/types';\nimport {MDCChipSetAdapter} from './adapter';\nimport {MDCChipSetFoundation} from './foundation';\n\nconst {INTERACTION_EVENT, SELECTION_EVENT, REMOVAL_EVENT, NAVIGATION_EVENT} = MDCChipFoundation.strings;\nconst {CHIP_SELECTOR} = MDCChipSetFoundation.strings;\n\nlet idCounter = 0;\n\nexport class MDCChipSet extends MDCComponent<MDCChipSetFoundation> {\n  static attachTo(root: Element) {\n    return new MDCChipSet(root);\n  }\n\n  get chips(): ReadonlyArray<MDCChip> {\n    return this.chipsList.slice();\n  }\n\n  /**\n   * @return An array of the IDs of all selected chips.\n   */\n  get selectedChipIds(): ReadonlyArray<string> {\n    return this.foundation.getSelectedChipIds();\n  }\n\n  private chipsList!: MDCChip[];                   // assigned in initialize()\n  private chipFactory!: (el: Element) => MDCChip;  // assigned in initialize()\n  private handleChipInteraction!: (evt: MDCChipInteractionEvent) =>\n      void;  // assigned in initialSyncWithDOM()\n  private handleChipSelection!:\n      (evt: MDCChipSelectionEvent) => void;  // assigned in initialSyncWithDOM()\n  private handleChipRemoval!:\n      (evt: MDCChipRemovalEvent) => void;  // assigned in initialSyncWithDOM()\n  private handleChipNavigation!: (evt: MDCChipNavigationEvent) =>\n      void;  // assigned in initialSyncWithDOM()\n\n  /**\n   * @param chipFactory A function which creates a new MDCChip.\n   */\n  initialize(chipFactory: MDCChipFactory = (el) => new MDCChip(el)) {\n    this.chipFactory = chipFactory;\n    this.chipsList = this.instantiateChips(this.chipFactory);\n  }\n\n  initialSyncWithDOM() {\n    for (const chip of this.chipsList) {\n      if (chip.id && chip.selected) {\n        this.foundation.select(chip.id);\n      }\n    }\n\n    this.handleChipInteraction = (evt) =>\n        this.foundation.handleChipInteraction(evt.detail);\n    this.handleChipSelection = (evt) =>\n        this.foundation.handleChipSelection(evt.detail);\n    this.handleChipRemoval = (evt) =>\n        this.foundation.handleChipRemoval(evt.detail);\n    this.handleChipNavigation = (evt) =>\n        this.foundation.handleChipNavigation(evt.detail);\n    this.listen(INTERACTION_EVENT, this.handleChipInteraction);\n    this.listen(SELECTION_EVENT, this.handleChipSelection);\n    this.listen(REMOVAL_EVENT, this.handleChipRemoval);\n    this.listen(NAVIGATION_EVENT, this.handleChipNavigation);\n  }\n\n  destroy() {\n    for (const chip of this.chipsList) {\n      chip.destroy();\n    }\n\n    this.unlisten(INTERACTION_EVENT, this.handleChipInteraction);\n    this.unlisten(SELECTION_EVENT, this.handleChipSelection);\n    this.unlisten(REMOVAL_EVENT, this.handleChipRemoval);\n    this.unlisten(NAVIGATION_EVENT, this.handleChipNavigation);\n\n    super.destroy();\n  }\n\n  /**\n   * Adds a new chip object to the chip set from the given chip element.\n   */\n  addChip(chipEl: Element) {\n    chipEl.id = chipEl.id || `mdc-chip-${++idCounter}`;\n    this.chipsList.push(this.chipFactory(chipEl));\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCChipSetAdapter = {\n      announceMessage: (message) => {\n        announce(message);\n      },\n      focusChipPrimaryActionAtIndex: (index) => {\n        this.chipsList[index].focusPrimaryAction();\n      },\n      focusChipTrailingActionAtIndex: (index) => {\n        this.chipsList[index].focusTrailingAction();\n      },\n      getChipListCount: () => this.chips.length,\n      getIndexOfChipById: (chipId) => {\n        return this.findChipIndex(chipId);\n      },\n      hasClass: (className) => this.root.classList.contains(className),\n      isRTL: () => window.getComputedStyle(this.root).getPropertyValue(\n                       'direction') === 'rtl',\n      removeChipAtIndex: (index) => {\n        if (index >= 0 && index < this.chips.length) {\n          this.chipsList[index].destroy();\n          this.chipsList[index].remove();\n          this.chipsList.splice(index, 1);\n        }\n      },\n      removeFocusFromChipAtIndex: (index) => {\n        this.chipsList[index].removeFocus();\n      },\n      selectChipAtIndex: (index, selected, shouldNotifyClients) => {\n        if (index >= 0 && index < this.chips.length) {\n          this.chipsList[index].setSelectedFromChipSet(\n              selected, shouldNotifyClients);\n        }\n      },\n    };\n    return new MDCChipSetFoundation(adapter);\n  }\n\n  /**\n   * Instantiates chip components on all of the chip set's child chip elements.\n   */\n  private instantiateChips(chipFactory: MDCChipFactory): MDCChip[] {\n    const chipElements: Element[] =\n        [].slice.call(this.root.querySelectorAll(CHIP_SELECTOR));\n    return chipElements.map((el) => {\n      el.id = el.id || `mdc-chip-${++idCounter}`;\n      return chipFactory(el);\n    });\n  }\n\n  /**\n   * Returns the index of the chip with the given id, or -1 if the chip does not exist.\n   */\n  private findChipIndex(chipId: string): number {\n    for (let i = 0; i < this.chips.length; i++) {\n      if (this.chipsList[i].id === chipId) {\n        return i;\n      }\n    }\n    return -1;\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const strings = {\n  CHIP_SELECTOR: '.mdc-chip',\n};\n\nexport const cssClasses = {\n  CHOICE: 'mdc-chip-set--choice',\n  FILTER: 'mdc-chip-set--filter',\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\n\nimport {Direction, EventSource, jumpChipKeys, navigationKeys, strings as chipStrings} from '../chip/constants';\nimport {MDCChipInteractionEventDetail, MDCChipNavigationEventDetail, MDCChipRemovalEventDetail, MDCChipSelectionEventDetail} from '../chip/types';\n\nimport {MDCChipSetAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCChipSetFoundation extends MDCFoundation<MDCChipSetAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get defaultAdapter(): MDCChipSetAdapter {\n    return {\n      announceMessage: () => undefined,\n      focusChipPrimaryActionAtIndex: () => undefined,\n      focusChipTrailingActionAtIndex: () => undefined,\n      getChipListCount: () => -1,\n      getIndexOfChipById: () => -1,\n      hasClass: () => false,\n      isRTL: () => false,\n      removeChipAtIndex: () => undefined,\n      removeFocusFromChipAtIndex: () => undefined,\n      selectChipAtIndex: () => undefined,\n    };\n  }\n\n  /**\n   * The ids of the selected chips in the set. Only used for choice chip set or filter chip set.\n   */\n  private selectedChipIds: string[] = [];\n\n  constructor(adapter?: Partial<MDCChipSetAdapter>) {\n    super({...MDCChipSetFoundation.defaultAdapter, ...adapter});\n  }\n\n  /**\n   * Returns an array of the IDs of all selected chips.\n   */\n  getSelectedChipIds(): ReadonlyArray<string> {\n    return this.selectedChipIds.slice();\n  }\n\n  /**\n   * Selects the chip with the given id. Deselects all other chips if the chip set is of the choice variant.\n   * Does not notify clients of the updated selection state.\n   */\n  select(chipId: string) {\n    this.selectImpl(chipId, false);\n  }\n\n  /**\n   * Handles a chip interaction event\n   */\n  handleChipInteraction({chipId}: MDCChipInteractionEventDetail) {\n    const index = this.adapter.getIndexOfChipById(chipId);\n    this.removeFocusFromChipsExcept(index);\n    if (this.adapter.hasClass(cssClasses.CHOICE) ||\n        this.adapter.hasClass(cssClasses.FILTER)) {\n      this.toggleSelect(chipId);\n    }\n  }\n\n  /**\n   * Handles a chip selection event, used to handle discrepancy when selection state is set directly on the Chip.\n   */\n  handleChipSelection({chipId, selected, shouldIgnore}:\n                          MDCChipSelectionEventDetail) {\n    // Early exit if we should ignore the event\n    if (shouldIgnore) {\n      return;\n    }\n\n    const chipIsSelected = this.selectedChipIds.indexOf(chipId) >= 0;\n    if (selected && !chipIsSelected) {\n      this.select(chipId);\n    } else if (!selected && chipIsSelected) {\n      this.deselectImpl(chipId);\n    }\n  }\n\n  /**\n   * Handles the event when a chip is removed.\n   */\n  handleChipRemoval({chipId, removedAnnouncement}: MDCChipRemovalEventDetail) {\n    if (removedAnnouncement) {\n      this.adapter.announceMessage(removedAnnouncement);\n    }\n\n    const index = this.adapter.getIndexOfChipById(chipId);\n    this.deselectAndNotifyClients(chipId);\n    this.adapter.removeChipAtIndex(index);\n    const maxIndex = this.adapter.getChipListCount() - 1;\n    if (maxIndex < 0) {\n      return;\n    }\n    const nextIndex = Math.min(index, maxIndex);\n    this.removeFocusFromChipsExcept(nextIndex);\n    // After removing a chip, we should focus the trailing action for the next chip.\n    this.adapter.focusChipTrailingActionAtIndex(nextIndex);\n  }\n\n  /**\n   * Handles a chip navigation event.\n   */\n  handleChipNavigation({chipId, key, source}: MDCChipNavigationEventDetail) {\n    const maxIndex = this.adapter.getChipListCount() - 1;\n    let index = this.adapter.getIndexOfChipById(chipId);\n    // Early exit if the index is out of range or the key is unusable\n    if (index === -1 || !navigationKeys.has(key)) {\n      return;\n    }\n\n    const isRTL = this.adapter.isRTL();\n    const isLeftKey = key === chipStrings.ARROW_LEFT_KEY ||\n        key === chipStrings.IE_ARROW_LEFT_KEY;\n    const isRightKey = key === chipStrings.ARROW_RIGHT_KEY ||\n        key === chipStrings.IE_ARROW_RIGHT_KEY;\n    const isDownKey = key === chipStrings.ARROW_DOWN_KEY ||\n        key === chipStrings.IE_ARROW_DOWN_KEY;\n    const shouldIncrement =\n        !isRTL && isRightKey || isRTL && isLeftKey || isDownKey;\n    const isHome = key === chipStrings.HOME_KEY;\n    const isEnd = key === chipStrings.END_KEY;\n    if (shouldIncrement) {\n      index++;\n    } else if (isHome) {\n      index = 0;\n    } else if (isEnd) {\n      index = maxIndex;\n    } else {\n      index--;\n    }\n\n    // Early exit if the index is out of bounds\n    if (index < 0 || index > maxIndex) {\n      return;\n    }\n\n    this.removeFocusFromChipsExcept(index);\n    this.focusChipAction(index, key, source);\n  }\n\n  private focusChipAction(index: number, key: string, source: EventSource) {\n    const shouldJumpChips = jumpChipKeys.has(key);\n    if (shouldJumpChips && source === EventSource.PRIMARY) {\n      return this.adapter.focusChipPrimaryActionAtIndex(index);\n    }\n\n    if (shouldJumpChips && source === EventSource.TRAILING) {\n      return this.adapter.focusChipTrailingActionAtIndex(index);\n    }\n\n    const dir = this.getDirection(key);\n    if (dir === Direction.LEFT) {\n      return this.adapter.focusChipTrailingActionAtIndex(index);\n    }\n\n    if (dir === Direction.RIGHT) {\n      return this.adapter.focusChipPrimaryActionAtIndex(index);\n    }\n  }\n\n  private getDirection(key: string): Direction {\n    const isRTL = this.adapter.isRTL();\n    const isLeftKey = key === chipStrings.ARROW_LEFT_KEY ||\n        key === chipStrings.IE_ARROW_LEFT_KEY;\n    const isRightKey = key === chipStrings.ARROW_RIGHT_KEY ||\n        key === chipStrings.IE_ARROW_RIGHT_KEY;\n    if (!isRTL && isLeftKey || isRTL && isRightKey) {\n      return Direction.LEFT;\n    }\n\n    return Direction.RIGHT;\n  }\n\n  /**\n   * Deselects the chip with the given id and optionally notifies clients.\n   */\n  private deselectImpl(chipId: string, shouldNotifyClients = false) {\n    const index = this.selectedChipIds.indexOf(chipId);\n    if (index >= 0) {\n      this.selectedChipIds.splice(index, 1);\n      const chipIndex = this.adapter.getIndexOfChipById(chipId);\n      this.adapter.selectChipAtIndex(\n          chipIndex, /** isSelected */ false, shouldNotifyClients);\n    }\n  }\n\n  /**\n   * Deselects the chip with the given id and notifies clients.\n   */\n  private deselectAndNotifyClients(chipId: string) {\n    this.deselectImpl(chipId, true);\n  }\n\n  /**\n   * Toggles selection of the chip with the given id.\n   */\n  private toggleSelect(chipId: string) {\n    if (this.selectedChipIds.indexOf(chipId) >= 0) {\n      this.deselectAndNotifyClients(chipId);\n    } else {\n      this.selectAndNotifyClients(chipId);\n    }\n  }\n\n  private removeFocusFromChipsExcept(index: number) {\n    const chipCount = this.adapter.getChipListCount();\n    for (let i = 0; i < chipCount; i++) {\n      if (i !== index) {\n        this.adapter.removeFocusFromChipAtIndex(i);\n      }\n    }\n  }\n\n  private selectAndNotifyClients(chipId: string) {\n    this.selectImpl(chipId, true);\n  }\n\n  private selectImpl(chipId: string, shouldNotifyClients: boolean) {\n    if (this.selectedChipIds.indexOf(chipId) >= 0) {\n      return;\n    }\n\n    if (this.adapter.hasClass(cssClasses.CHOICE) &&\n        this.selectedChipIds.length > 0) {\n      const previouslySelectedChip = this.selectedChipIds[0];\n      const previouslySelectedIndex =\n          this.adapter.getIndexOfChipById(previouslySelectedChip);\n      this.selectedChipIds = [];\n      this.adapter.selectChipAtIndex(\n          previouslySelectedIndex, /** isSelected */ false,\n          shouldNotifyClients);\n    }\n    this.selectedChipIds.push(chipId);\n    const index = this.adapter.getIndexOfChipById(chipId);\n    this.adapter.selectChipAtIndex(\n        index, /** isSelected */ true, shouldNotifyClients);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCChipSetFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport {cssClasses as chipSetCssClasses, strings as chipSetStrings} from './constants';\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventSource} from './constants';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCChipAdapter {\n  /**\n   * Adds a class to the root element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the root element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * @return true if the root element contains the given class.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Adds a class to the leading icon element.\n   */\n  addClassToLeadingIcon(className: string): void;\n\n  /**\n   * Removes a class from the leading icon element.\n   */\n  removeClassFromLeadingIcon(className: string): void;\n\n  /**\n   * @return true if target has className, false otherwise.\n   */\n  eventTargetHasClass(target: EventTarget | null, className: string): boolean;\n\n  /**\n   * @return the attribute string value if present, otherwise null\n   */\n  getAttribute(attr: string): string|null;\n\n  /**\n   * Emits a custom \"MDCChip:interaction\" event denoting the chip has been\n   * interacted with (typically on click or keydown).\n   */\n  notifyInteraction(): void;\n\n  /**\n   * Emits a custom \"MDCChip:selection\" event denoting the chip has been selected or deselected.\n   */\n  notifySelection(selected: boolean, chipSetShouldIgnore: boolean): void;\n\n  /**\n   * Emits a custom \"MDCChip:trailingIconInteraction\" event denoting the trailing icon has been\n   * interacted with (typically on click or keydown).\n   */\n  notifyTrailingIconInteraction(): void;\n\n  /**\n   * Emits a custom event \"MDCChip:removal\" denoting the chip will be removed.\n   */\n  notifyRemoval(removedAnnouncement: string|null): void;\n\n  /**\n   * Emits a custom event \"MDCChip:navigation\" denoting a focus navigation event.\n   */\n  notifyNavigation(key: string, source: EventSource): void;\n\n  /**\n   * Emits when editing starts.\n   */\n  notifyEditStart(): void;\n\n  /**\n   * Emits when editing finishes.\n   */\n  notifyEditFinish(): void;\n\n  /**\n   * @return The computed property value of the given style property on the root element.\n   */\n  getComputedStyleValue(propertyName: string): string;\n\n  /**\n   * Sets the property value of the given style property on the root element.\n   */\n  setStyleProperty(propertyName: string, value: string): void;\n\n  /**\n   * @return Whether the chip has a leading icon.\n   */\n  hasLeadingIcon(): boolean;\n\n  /**\n   * @return The bounding client rect of the root element.\n   */\n  getRootBoundingClientRect(): ClientRect;\n\n  /**\n   * @return The bounding client rect of the checkmark element or null if it doesn't exist.\n   */\n  getCheckmarkBoundingClientRect(): ClientRect | null;\n\n  /**\n   * Sets the value of the attribute on the primary action content.\n   */\n  setPrimaryActionAttr(attr: string, value: string): void;\n\n  /**\n   * Gives focus to the primary action.\n   */\n  focusPrimaryAction(): void;\n\n  /**\n   * Sets focus to the trailing action.\n   */\n  focusTrailingAction(): void;\n\n  /**\n   * Removes focus from the trailing action.\n   */\n  removeTrailingActionFocus(): void;\n\n  /**\n   * Returns true if the trailing action is navigable.\n   * Should return the value of MDCChipTrailingAction#isNavigable() or false.\n   */\n  isTrailingActionNavigable(): boolean;\n\n  /**\n   * @return true if the text direction is right-to-left.\n   */\n  isRTL(): boolean;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {CustomEventListener, SpecificEventListener} from '@material/base/types';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple, MDCRippleFactory} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\n\nimport {MDCChipTrailingAction, MDCChipTrailingActionFactory} from '../trailingaction/component';\nimport {strings as trailingActionStrings} from '../trailingaction/constants';\nimport {MDCChipTrailingActionInteractionEvent, MDCChipTrailingActionNavigationEvent} from '../trailingaction/types';\n\nimport {MDCChipAdapter} from './adapter';\nimport {strings} from './constants';\nimport {MDCChipFoundation} from './foundation';\nimport {MDCChipInteractionEventDetail, MDCChipNavigationEventDetail, MDCChipRemovalEventDetail, MDCChipSelectionEventDetail} from './types';\n\nexport type MDCChipFactory = (el: Element, foundation?: MDCChipFoundation) => MDCChip;\n\nexport class MDCChip extends MDCComponent<MDCChipFoundation> implements MDCRippleCapableSurface {\n  /**\n   * @return Whether the chip is selected.\n   */\n  get selected(): boolean {\n    return this.foundation.isSelected();\n  }\n\n  /**\n   * Sets selected state on the chip.\n   */\n  set selected(selected: boolean) {\n    this.foundation.setSelected(selected);\n  }\n\n  /**\n   * @return Whether a trailing icon click should trigger exit/removal of the chip.\n   */\n  get shouldRemoveOnTrailingIconClick(): boolean {\n    return this.foundation.getShouldRemoveOnTrailingIconClick();\n  }\n\n  /**\n   * Sets whether a trailing icon click should trigger exit/removal of the chip.\n   */\n  set shouldRemoveOnTrailingIconClick(shouldRemove: boolean) {\n    this.foundation.setShouldRemoveOnTrailingIconClick(shouldRemove);\n  }\n\n  /**\n   * Sets whether a clicking on the chip should focus the primary action.\n   */\n  set setShouldFocusPrimaryActionOnClick(shouldFocus: boolean) {\n    this.foundation.setShouldFocusPrimaryActionOnClick(shouldFocus);\n  }\n\n  get ripple(): MDCRipple {\n    return this.rippleSurface;\n  }\n\n  get id(): string {\n    return this.root.id;\n  }\n\n  static attachTo(root: Element) {\n    return new MDCChip(root);\n  }\n\n  private leadingIcon!: Element|null;    // assigned in initialize()\n  private checkmark!: Element|null;      // assigned in initialize()\n  private primaryAction!: Element|null;  // assigned in initialize()\n  private trailingAction!: MDCChipTrailingAction|\n      null;                           // assigned in initialize()\n  private rippleSurface!: MDCRipple;  // assigned in initialize()\n\n  private handleTrailingActionInteraction!: CustomEventListener<\n      MDCChipTrailingActionInteractionEvent>;  // assigned in\n                                               // initialSyncWithDOM()\n  private handleTrailingActionNavigation!: CustomEventListener<\n      MDCChipTrailingActionNavigationEvent>;  // assigned in\n                                              // initialSyncWithDOM()\n  private handleTransitionEnd!:\n      SpecificEventListener<'transitionend'>;  // assigned in\n                                               // initialSyncWithDOM()\n  private handleClick!:\n      SpecificEventListener<'click'>;  // assigned in initialSyncWithDOM()\n  private handleKeydown!:\n      SpecificEventListener<'keydown'>;  // assigned in initialSyncWithDOM()\n  private handleFocusIn!:\n      SpecificEventListener<'focusin'>;  // assigned in initialSyncWIthDOM()\n  private handleFocusOut!:\n      SpecificEventListener<'focusout'>;  // assigned in initialSyncWIthDOM()\n\n  initialize(\n      rippleFactory:\n          MDCRippleFactory = (el, foundation) => new MDCRipple(el, foundation),\n      trailingActionFactory:\n          MDCChipTrailingActionFactory = (el) => new MDCChipTrailingAction(el),\n  ) {\n    this.leadingIcon = this.root.querySelector(strings.LEADING_ICON_SELECTOR);\n    this.checkmark = this.root.querySelector(strings.CHECKMARK_SELECTOR);\n    this.primaryAction =\n        this.root.querySelector(strings.PRIMARY_ACTION_SELECTOR);\n\n    const trailingActionEl =\n        this.root.querySelector(strings.TRAILING_ACTION_SELECTOR);\n\n    if (trailingActionEl) {\n      this.trailingAction = trailingActionFactory(trailingActionEl);\n    }\n\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const rippleAdapter: MDCRippleAdapter = {\n      ...MDCRipple.createAdapter(this),\n      computeBoundingRect: () => this.foundation.getDimensions(),\n    };\n    this.rippleSurface =\n        rippleFactory(this.root, new MDCRippleFoundation(rippleAdapter));\n  }\n\n  initialSyncWithDOM() {\n    // Custom events\n    this.handleTrailingActionInteraction = () => {\n      this.foundation.handleTrailingActionInteraction();\n    };\n    this.handleTrailingActionNavigation =\n        (evt: MDCChipTrailingActionNavigationEvent) => {\n          this.foundation.handleTrailingActionNavigation(evt);\n        };\n    // Native events\n    this.handleClick = () => {\n      this.foundation.handleClick();\n    };\n    this.handleKeydown = (evt: KeyboardEvent) => {\n      this.foundation.handleKeydown(evt);\n    };\n    this.handleTransitionEnd = (evt: TransitionEvent) => {\n      this.foundation.handleTransitionEnd(evt);\n    };\n    this.handleFocusIn = (evt: FocusEvent) => {\n      this.foundation.handleFocusIn(evt);\n    };\n    this.handleFocusOut = (evt: FocusEvent) => {\n      this.foundation.handleFocusOut(evt);\n    };\n\n\n    this.listen('transitionend', this.handleTransitionEnd);\n    this.listen('click', this.handleClick);\n    this.listen('keydown', this.handleKeydown);\n    this.listen('focusin', this.handleFocusIn);\n    this.listen('focusout', this.handleFocusOut);\n\n    if (this.trailingAction) {\n      this.listen(\n          trailingActionStrings.INTERACTION_EVENT,\n          this.handleTrailingActionInteraction);\n      this.listen(\n          trailingActionStrings.NAVIGATION_EVENT,\n          this.handleTrailingActionNavigation);\n    }\n  }\n\n  destroy() {\n    this.rippleSurface.destroy();\n\n    this.unlisten('transitionend', this.handleTransitionEnd);\n    this.unlisten('keydown', this.handleKeydown);\n    this.unlisten('click', this.handleClick);\n    this.unlisten('focusin', this.handleFocusIn);\n    this.unlisten('focusout', this.handleFocusOut);\n\n    if (this.trailingAction) {\n      this.unlisten(\n          trailingActionStrings.INTERACTION_EVENT,\n          this.handleTrailingActionInteraction);\n      this.unlisten(\n          trailingActionStrings.NAVIGATION_EVENT,\n          this.handleTrailingActionNavigation);\n    }\n\n    super.destroy();\n  }\n\n  /**\n   * Begins the exit animation which leads to removal of the chip.\n   */\n  beginExit() {\n    this.foundation.beginExit();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCChipAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      addClassToLeadingIcon: (className) => {\n        if (this.leadingIcon) {\n          this.leadingIcon.classList.add(className);\n        }\n      },\n      eventTargetHasClass: (target, className) =>\n          target ? (target as Element).classList.contains(className) : false,\n      focusPrimaryAction: () => {\n        if (this.primaryAction) {\n          (this.primaryAction as HTMLElement).focus();\n        }\n      },\n      focusTrailingAction: () => {\n        if (this.trailingAction) {\n          this.trailingAction.focus();\n        }\n      },\n      getAttribute: (attr) => this.root.getAttribute(attr),\n      getCheckmarkBoundingClientRect: () =>\n          this.checkmark ? this.checkmark.getBoundingClientRect() : null,\n      getComputedStyleValue: (propertyName) =>\n          window.getComputedStyle(this.root).getPropertyValue(propertyName),\n      getRootBoundingClientRect: () => this.root.getBoundingClientRect(),\n      hasClass: (className) => this.root.classList.contains(className),\n      hasLeadingIcon: () => !!this.leadingIcon,\n      isRTL: () => window.getComputedStyle(this.root).getPropertyValue(\n                       'direction') === 'rtl',\n      isTrailingActionNavigable: () => {\n        if (this.trailingAction) {\n          return this.trailingAction.isNavigable();\n        }\n        return false;\n      },\n      notifyInteraction: () => this.emit<MDCChipInteractionEventDetail>(\n          strings.INTERACTION_EVENT, {chipId: this.id},\n          true /* shouldBubble */),\n      notifyNavigation: (key, source) =>\n          this.emit<MDCChipNavigationEventDetail>(\n              strings.NAVIGATION_EVENT, {chipId: this.id, key, source},\n              true /* shouldBubble */),\n      notifyRemoval: (removedAnnouncement) => {\n        this.emit<MDCChipRemovalEventDetail>(\n            strings.REMOVAL_EVENT, {chipId: this.id, removedAnnouncement},\n            true /* shouldBubble */);\n      },\n      notifySelection: (selected, shouldIgnore) =>\n          this.emit<MDCChipSelectionEventDetail>(\n              strings.SELECTION_EVENT,\n              {chipId: this.id, selected, shouldIgnore},\n              true /* shouldBubble */),\n      notifyTrailingIconInteraction: () =>\n          this.emit<MDCChipInteractionEventDetail>(\n              strings.TRAILING_ICON_INTERACTION_EVENT, {chipId: this.id},\n              true /* shouldBubble */),\n      notifyEditStart: () => { /* Not Implemented. */ },\n      notifyEditFinish: () => { /* Not Implemented. */ },\n      removeClass: (className) => this.root.classList.remove(className),\n      removeClassFromLeadingIcon: (className) => {\n        if (this.leadingIcon) {\n          this.leadingIcon.classList.remove(className);\n        }\n      },\n      removeTrailingActionFocus: () => {\n        if (this.trailingAction) {\n          this.trailingAction.removeFocus();\n        }\n      },\n      setPrimaryActionAttr: (attr, value) => {\n        if (this.primaryAction) {\n          this.primaryAction.setAttribute(attr, value);\n        }\n      },\n      setStyleProperty: (propertyName, value) =>\n          (this.root as HTMLElement).style.setProperty(propertyName, value),\n    };\n    return new MDCChipFoundation(adapter);\n  }\n\n  setSelectedFromChipSet(selected: boolean, shouldNotifyClients: boolean) {\n    this.foundation.setSelectedFromChipSet(selected, shouldNotifyClients);\n  }\n\n  focusPrimaryAction() {\n    this.foundation.focusPrimaryAction();\n  }\n\n  focusTrailingAction() {\n    this.foundation.focusTrailingAction();\n  }\n\n  removeFocus() {\n    this.foundation.removeFocus();\n  }\n\n  remove() {\n    const parent = this.root.parentNode;\n    if (parent !== null) {\n      parent.removeChild(this.root);\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport enum Direction {\n  LEFT = 'left',\n  RIGHT = 'right',\n}\n\nexport enum EventSource {\n  PRIMARY = 'primary',\n  TRAILING = 'trailing',\n  NONE = 'none',\n}\n\nexport const strings = {\n  ADDED_ANNOUNCEMENT_ATTRIBUTE: 'data-mdc-chip-added-announcement',\n  ARIA_CHECKED: 'aria-checked',\n  ARROW_DOWN_KEY: 'ArrowDown',\n  ARROW_LEFT_KEY: 'ArrowLeft',\n  ARROW_RIGHT_KEY: 'ArrowRight',\n  ARROW_UP_KEY: 'ArrowUp',\n  BACKSPACE_KEY: 'Backspace',\n  CHECKMARK_SELECTOR: '.mdc-chip__checkmark',\n  DELETE_KEY: 'Delete',\n  END_KEY: 'End',\n  ENTER_KEY: 'Enter',\n  ENTRY_ANIMATION_NAME: 'mdc-chip-entry',\n  HOME_KEY: 'Home',\n  IE_ARROW_DOWN_KEY: 'Down',\n  IE_ARROW_LEFT_KEY: 'Left',\n  IE_ARROW_RIGHT_KEY: 'Right',\n  IE_ARROW_UP_KEY: 'Up',\n  IE_DELETE_KEY: 'Del',\n  INTERACTION_EVENT: 'MDCChip:interaction',\n  LEADING_ICON_SELECTOR: '.mdc-chip__icon--leading',\n  NAVIGATION_EVENT: 'MDCChip:navigation',\n  PRIMARY_ACTION_SELECTOR: '.mdc-chip__primary-action',\n  REMOVED_ANNOUNCEMENT_ATTRIBUTE: 'data-mdc-chip-removed-announcement',\n  REMOVAL_EVENT: 'MDCChip:removal',\n  SELECTION_EVENT: 'MDCChip:selection',\n  SPACEBAR_KEY: ' ',\n  TAB_INDEX: 'tabindex',\n  TRAILING_ACTION_SELECTOR: '.mdc-chip-trailing-action',\n  TRAILING_ICON_INTERACTION_EVENT: 'MDCChip:trailingIconInteraction',\n  TRAILING_ICON_SELECTOR: '.mdc-chip__icon--trailing',\n};\n\nexport const cssClasses = {\n  CHECKMARK: 'mdc-chip__checkmark',\n  CHIP_EXIT: 'mdc-chip--exit',\n  DELETABLE: 'mdc-chip--deletable',\n  EDITABLE: 'mdc-chip--editable',\n  EDITING: 'mdc-chip--editing',\n  HIDDEN_LEADING_ICON: 'mdc-chip__icon--leading-hidden',\n  LEADING_ICON: 'mdc-chip__icon--leading',\n  PRIMARY_ACTION: 'mdc-chip__primary-action',\n  PRIMARY_ACTION_FOCUSED: 'mdc-chip--primary-action-focused',\n  SELECTED: 'mdc-chip--selected',\n  TEXT: 'mdc-chip__text',\n  TRAILING_ACTION: 'mdc-chip__trailing-action',\n  TRAILING_ICON: 'mdc-chip__icon--trailing',\n};\n\nexport const navigationKeys = new Set<string>();\n// IE11 has no support for new Set with iterable so we need to initialize this by hand\nnavigationKeys.add(strings.ARROW_LEFT_KEY);\nnavigationKeys.add(strings.ARROW_RIGHT_KEY);\nnavigationKeys.add(strings.ARROW_DOWN_KEY);\nnavigationKeys.add(strings.ARROW_UP_KEY);\nnavigationKeys.add(strings.END_KEY);\nnavigationKeys.add(strings.HOME_KEY);\nnavigationKeys.add(strings.IE_ARROW_LEFT_KEY);\nnavigationKeys.add(strings.IE_ARROW_RIGHT_KEY);\nnavigationKeys.add(strings.IE_ARROW_DOWN_KEY);\nnavigationKeys.add(strings.IE_ARROW_UP_KEY);\n\nexport const jumpChipKeys = new Set<string>();\n// IE11 has no support for new Set with iterable so we need to initialize this by hand\njumpChipKeys.add(strings.ARROW_UP_KEY);\njumpChipKeys.add(strings.ARROW_DOWN_KEY);\njumpChipKeys.add(strings.HOME_KEY);\njumpChipKeys.add(strings.END_KEY);\njumpChipKeys.add(strings.IE_ARROW_UP_KEY);\njumpChipKeys.add(strings.IE_ARROW_DOWN_KEY);\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\n\nimport {MDCChipTrailingActionNavigationEvent} from '../trailingaction/types';\n\nimport {MDCChipAdapter} from './adapter';\nimport {cssClasses, Direction, EventSource, jumpChipKeys, navigationKeys, strings} from './constants';\n\nconst emptyClientRect = {\n  bottom: 0,\n  height: 0,\n  left: 0,\n  right: 0,\n  top: 0,\n  width: 0,\n};\n\nenum FocusBehavior {\n  SHOULD_FOCUS,\n  SHOULD_NOT_FOCUS,\n}\n\nexport class MDCChipFoundation extends MDCFoundation<MDCChipAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get defaultAdapter(): MDCChipAdapter {\n    return {\n      addClass: () => undefined,\n      addClassToLeadingIcon: () => undefined,\n      eventTargetHasClass: () => false,\n      focusPrimaryAction: () => undefined,\n      focusTrailingAction: () => undefined,\n      getAttribute: () => null,\n      getCheckmarkBoundingClientRect: () => emptyClientRect,\n      getComputedStyleValue: () => '',\n      getRootBoundingClientRect: () => emptyClientRect,\n      hasClass: () => false,\n      hasLeadingIcon: () => false,\n      isRTL: () => false,\n      isTrailingActionNavigable: () => false,\n      notifyEditFinish: () => undefined,\n      notifyEditStart: () => undefined,\n      notifyInteraction: () => undefined,\n      notifyNavigation: () => undefined,\n      notifyRemoval: () => undefined,\n      notifySelection: () => undefined,\n      notifyTrailingIconInteraction: () => undefined,\n      removeClass: () => undefined,\n      removeClassFromLeadingIcon: () => undefined,\n      removeTrailingActionFocus: () => undefined,\n      setPrimaryActionAttr: () => undefined,\n      setStyleProperty: () => undefined,\n    };\n  }\n\n  /** Whether a trailing icon click should immediately trigger exit/removal of the chip. */\n  private shouldRemoveOnTrailingIconClick = true;\n\n  /**\n   * Whether the primary action should receive focus on click. Should only be\n   * set to true for clients who programmatically give focus to a different\n   * element on the page when a chip is clicked (like a menu).\n   */\n  private shouldFocusPrimaryActionOnClick = true;\n\n  constructor(adapter?: Partial<MDCChipAdapter>) {\n    super({...MDCChipFoundation.defaultAdapter, ...adapter});\n  }\n\n  isSelected() {\n    return this.adapter.hasClass(cssClasses.SELECTED);\n  }\n\n  isEditable() {\n    return this.adapter.hasClass(cssClasses.EDITABLE);\n  }\n\n  isEditing() {\n    return this.adapter.hasClass(cssClasses.EDITING);\n  }\n\n  setSelected(selected: boolean) {\n    this.setSelectedImpl(selected);\n    this.notifySelection(selected);\n  }\n\n  setSelectedFromChipSet(selected: boolean, shouldNotifyClients: boolean) {\n    this.setSelectedImpl(selected);\n    if (shouldNotifyClients) {\n      this.notifyIgnoredSelection(selected);\n    }\n  }\n\n  getShouldRemoveOnTrailingIconClick() {\n    return this.shouldRemoveOnTrailingIconClick;\n  }\n\n  setShouldRemoveOnTrailingIconClick(shouldRemove: boolean) {\n    this.shouldRemoveOnTrailingIconClick = shouldRemove;\n  }\n\n  setShouldFocusPrimaryActionOnClick(shouldFocus: boolean) {\n    this.shouldFocusPrimaryActionOnClick = shouldFocus;\n  }\n\n  getDimensions(): ClientRect {\n    const getRootRect = () => this.adapter.getRootBoundingClientRect();\n    const getCheckmarkRect = () =>\n        this.adapter.getCheckmarkBoundingClientRect();\n\n    // When a chip has a checkmark and not a leading icon, the bounding rect changes in size depending on the current\n    // size of the checkmark.\n    if (!this.adapter.hasLeadingIcon()) {\n      const checkmarkRect = getCheckmarkRect();\n      if (checkmarkRect) {\n        const rootRect = getRootRect();\n        // Checkmark is a square, meaning the client rect's width and height are identical once the animation completes.\n        // However, the checkbox is initially hidden by setting the width to 0.\n        // To account for an initial width of 0, we use the checkbox's height instead (which equals the end-state width)\n        // when adding it to the root client rect's width.\n        return {\n          bottom: rootRect.bottom,\n          height: rootRect.height,\n          left: rootRect.left,\n          right: rootRect.right,\n          top: rootRect.top,\n          width: rootRect.width + checkmarkRect.height,\n        };\n      }\n    }\n\n    return getRootRect();\n  }\n\n  /**\n   * Begins the exit animation which leads to removal of the chip.\n   */\n  beginExit() {\n    this.adapter.addClass(cssClasses.CHIP_EXIT);\n  }\n\n  handleClick() {\n    this.adapter.notifyInteraction();\n    this.setPrimaryActionFocusable(this.getFocusBehavior());\n  }\n\n  handleDoubleClick() {\n    if (this.isEditable()) {\n      this.startEditing();\n    }\n  }\n\n  /**\n   * Handles a transition end event on the root element.\n   */\n  handleTransitionEnd(evt: TransitionEvent) {\n    // Handle transition end event on the chip when it is about to be removed.\n    const shouldHandle =\n        this.adapter.eventTargetHasClass(evt.target, cssClasses.CHIP_EXIT);\n    const widthIsAnimating = evt.propertyName === 'width';\n    const opacityIsAnimating = evt.propertyName === 'opacity';\n\n    if (shouldHandle && opacityIsAnimating) {\n      // See: https://css-tricks.com/using-css-transitions-auto-dimensions/#article-header-id-5\n      const chipWidth = this.adapter.getComputedStyleValue('width');\n\n      // On the next frame (once we get the computed width), explicitly set the chip's width\n      // to its current pixel width, so we aren't transitioning out of 'auto'.\n      requestAnimationFrame(() => {\n        this.adapter.setStyleProperty('width', chipWidth);\n\n        // To mitigate jitter, start transitioning padding and margin before width.\n        this.adapter.setStyleProperty('padding', '0');\n        this.adapter.setStyleProperty('margin', '0');\n\n        // On the next frame (once width is explicitly set), transition width to 0.\n        requestAnimationFrame(() => {\n          this.adapter.setStyleProperty('width', '0');\n        });\n      });\n      return;\n    }\n\n    if (shouldHandle && widthIsAnimating) {\n      this.removeFocus();\n      const removedAnnouncement =\n          this.adapter.getAttribute(strings.REMOVED_ANNOUNCEMENT_ATTRIBUTE);\n\n      this.adapter.notifyRemoval(removedAnnouncement);\n    }\n\n    // Handle a transition end event on the leading icon or checkmark, since the transition end event bubbles.\n    if (!opacityIsAnimating) {\n      return;\n    }\n\n    const shouldHideLeadingIcon =\n        this.adapter.eventTargetHasClass(evt.target, cssClasses.LEADING_ICON) &&\n        this.adapter.hasClass(cssClasses.SELECTED);\n    const shouldShowLeadingIcon =\n        this.adapter.eventTargetHasClass(evt.target, cssClasses.CHECKMARK) &&\n        !this.adapter.hasClass(cssClasses.SELECTED);\n\n    if (shouldHideLeadingIcon) {\n      this.adapter.addClassToLeadingIcon(cssClasses.HIDDEN_LEADING_ICON);\n      return;\n    }\n\n    if (shouldShowLeadingIcon) {\n      this.adapter.removeClassFromLeadingIcon(cssClasses.HIDDEN_LEADING_ICON);\n      return;\n    }\n  }\n\n  handleFocusIn(evt: FocusEvent) {\n    // Early exit if the event doesn't come from the primary action\n    if (!this.eventFromPrimaryAction(evt)) {\n      return;\n    }\n\n    this.adapter.addClass(cssClasses.PRIMARY_ACTION_FOCUSED);\n  }\n\n  handleFocusOut(evt: FocusEvent) {\n    // Early exit if the event doesn't come from the primary action\n    if (!this.eventFromPrimaryAction(evt)) {\n      return;\n    }\n\n    if (this.isEditing()) {\n      this.finishEditing();\n    }\n\n    this.adapter.removeClass(cssClasses.PRIMARY_ACTION_FOCUSED);\n  }\n\n  /**\n   * Handles an interaction event on the trailing icon element. This is used to\n   * prevent the ripple from activating on interaction with the trailing icon.\n   */\n  handleTrailingActionInteraction() {\n    this.adapter.notifyTrailingIconInteraction();\n    this.removeChip();\n  }\n\n  /**\n   * Handles a keydown event from the root element.\n   */\n  handleKeydown(evt: KeyboardEvent) {\n    if (this.isEditing()) {\n      if (this.shouldFinishEditing(evt)) {\n        evt.preventDefault();\n        this.finishEditing();\n      }\n      // When editing, the foundation should only handle key events that finish\n      // the editing process.\n      return;\n    }\n\n    if (this.isEditable()) {\n      if (this.shouldStartEditing(evt)) {\n        evt.preventDefault();\n        this.startEditing();\n      }\n    }\n\n    if (this.shouldNotifyInteraction(evt)) {\n      this.adapter.notifyInteraction();\n      this.setPrimaryActionFocusable(this.getFocusBehavior());\n      return;\n    }\n\n    if (this.isDeleteAction(evt)) {\n      evt.preventDefault();\n      this.removeChip();\n      return;\n    }\n\n    // Early exit if the key is not usable\n    if (!navigationKeys.has(evt.key)) {\n      return;\n    }\n\n    // Prevent default behavior for movement keys which could include scrolling\n    evt.preventDefault();\n    this.focusNextAction(evt.key, EventSource.PRIMARY);\n  }\n\n  handleTrailingActionNavigation(evt: MDCChipTrailingActionNavigationEvent) {\n    this.focusNextAction(evt.detail.key, EventSource.TRAILING);\n  }\n\n  /**\n   * Called by the chip set to remove focus from the chip actions.\n   */\n  removeFocus() {\n    this.adapter.setPrimaryActionAttr(strings.TAB_INDEX, '-1');\n    this.adapter.removeTrailingActionFocus();\n  }\n\n  /**\n   * Called by the chip set to focus the primary action.\n   *\n   */\n  focusPrimaryAction() {\n    this.setPrimaryActionFocusable(FocusBehavior.SHOULD_FOCUS);\n  }\n\n  /**\n   * Called by the chip set to focus the trailing action (if present), otherwise\n   * gives focus to the trailing action.\n   */\n  focusTrailingAction() {\n    const trailingActionIsNavigable = this.adapter.isTrailingActionNavigable();\n    if (trailingActionIsNavigable) {\n      this.adapter.setPrimaryActionAttr(strings.TAB_INDEX, '-1');\n      this.adapter.focusTrailingAction();\n      return;\n    }\n\n    this.focusPrimaryAction();\n  }\n\n  private setPrimaryActionFocusable(focusBehavior: FocusBehavior) {\n    this.adapter.setPrimaryActionAttr(strings.TAB_INDEX, '0');\n    if (focusBehavior === FocusBehavior.SHOULD_FOCUS) {\n      this.adapter.focusPrimaryAction();\n    }\n    this.adapter.removeTrailingActionFocus();\n  }\n\n  private getFocusBehavior(): FocusBehavior {\n    if (this.shouldFocusPrimaryActionOnClick) {\n      return FocusBehavior.SHOULD_FOCUS;\n    }\n    return FocusBehavior.SHOULD_NOT_FOCUS;\n  }\n\n  private focusNextAction(key: string, source: EventSource) {\n    const isTrailingActionNavigable = this.adapter.isTrailingActionNavigable();\n    const dir = this.getDirection(key);\n\n    // Early exit if the key should jump chips\n    if (jumpChipKeys.has(key) || !isTrailingActionNavigable) {\n      this.adapter.notifyNavigation(key, source);\n      return;\n    }\n\n    if (source === EventSource.PRIMARY && dir === Direction.RIGHT) {\n      this.focusTrailingAction();\n      return;\n    }\n\n    if (source === EventSource.TRAILING && dir === Direction.LEFT) {\n      this.focusPrimaryAction();\n      return;\n    }\n\n    this.adapter.notifyNavigation(key, EventSource.NONE);\n  }\n\n  private getDirection(key: string): Direction {\n    const isRTL = this.adapter.isRTL();\n    const isLeftKey =\n        key === strings.ARROW_LEFT_KEY || key === strings.IE_ARROW_LEFT_KEY;\n    const isRightKey =\n        key === strings.ARROW_RIGHT_KEY || key === strings.IE_ARROW_RIGHT_KEY;\n    if (!isRTL && isLeftKey || isRTL && isRightKey) {\n      return Direction.LEFT;\n    }\n\n    return Direction.RIGHT;\n  }\n\n  private removeChip() {\n    if (this.shouldRemoveOnTrailingIconClick) {\n      this.beginExit();\n    }\n  }\n\n  private shouldStartEditing(evt: KeyboardEvent): boolean {\n    return this.eventFromPrimaryAction(evt) && evt.key === strings.ENTER_KEY;\n  }\n\n  private shouldFinishEditing(evt: KeyboardEvent): boolean {\n    return evt.key === strings.ENTER_KEY;\n  }\n\n  private shouldNotifyInteraction(evt: KeyboardEvent): boolean {\n    return evt.key === strings.ENTER_KEY || evt.key === strings.SPACEBAR_KEY;\n  }\n\n  private isDeleteAction(evt: KeyboardEvent): boolean {\n    const isDeletable = this.adapter.hasClass(cssClasses.DELETABLE);\n    return isDeletable &&\n        (evt.key === strings.BACKSPACE_KEY || evt.key === strings.DELETE_KEY ||\n         evt.key === strings.IE_DELETE_KEY);\n  }\n\n  private setSelectedImpl(selected: boolean) {\n    if (selected) {\n      this.adapter.addClass(cssClasses.SELECTED);\n      this.adapter.setPrimaryActionAttr(strings.ARIA_CHECKED, 'true');\n    } else {\n      this.adapter.removeClass(cssClasses.SELECTED);\n      this.adapter.setPrimaryActionAttr(strings.ARIA_CHECKED, 'false');\n    }\n  }\n\n  private notifySelection(selected: boolean) {\n    this.adapter.notifySelection(selected, false);\n  }\n\n  private notifyIgnoredSelection(selected: boolean) {\n    this.adapter.notifySelection(selected, true);\n  }\n\n  private eventFromPrimaryAction(evt: Event) {\n    return this.adapter.eventTargetHasClass(\n        evt.target, cssClasses.PRIMARY_ACTION);\n  }\n\n  private startEditing() {\n    this.adapter.addClass(cssClasses.EDITING);\n    this.adapter.notifyEditStart();\n  }\n\n  private finishEditing() {\n    this.adapter.removeClass(cssClasses.EDITING);\n    this.adapter.notifyEditFinish();\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCChipFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport * from './types';\nexport {cssClasses as chipCssClasses, strings as chipStrings} from './constants';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventSource} from './constants';\n\nexport interface MDCChipInteractionEventDetail {\n  chipId: string;\n}\n\nexport interface MDCChipSelectionEventDetail extends MDCChipInteractionEventDetail {\n  selected: boolean;\n  shouldIgnore: boolean;\n}\n\nexport interface MDCChipRemovalEventDetail extends MDCChipInteractionEventDetail {\n  removedAnnouncement: string|null;\n}\n\nexport interface MDCChipNavigationEventDetail extends MDCChipInteractionEventDetail {\n  key: string;\n  source: EventSource;\n}\n\n// Note: CustomEvent<T> is not supported by Closure Compiler.\n\nexport interface MDCChipInteractionEvent extends Event {\n  readonly detail: MDCChipInteractionEventDetail;\n}\n\nexport interface MDCChipSelectionEvent extends Event {\n  readonly detail: MDCChipSelectionEventDetail;\n}\n\nexport interface MDCChipRemovalEvent extends Event {\n  readonly detail: MDCChipRemovalEventDetail;\n}\n\nexport interface MDCChipNavigationEvent extends Event {\n  readonly detail: MDCChipNavigationEventDetail;\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './trailingaction/index';\nexport * from './chip/index';\nexport * from './chip-set/index';\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {InteractionTrigger} from './constants';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCChipTrailingActionAdapter {\n  focus(): void;\n\n  getAttribute(attr: string): string|null;\n\n  notifyInteraction(trigger: InteractionTrigger): void;\n\n  notifyNavigation(key: string): void;\n\n  setAttribute(attr: string, value: string): void;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple, MDCRippleFactory} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\nimport {MDCChipTrailingActionAdapter} from './adapter';\nimport {strings} from './constants';\nimport {MDCChipTrailingActionFoundation} from './foundation';\nimport {MDCChipTrailingActionInteractionEventDetail, MDCChipTrailingActionNavigationEventDetail} from './types';\n\n/**\n * Creates a trailing action component on the given element.\n */\nexport type MDCChipTrailingActionFactory =\n    (el: Element, foundation?: MDCChipTrailingActionFoundation) =>\n        MDCChipTrailingAction;\n\nexport class MDCChipTrailingAction extends\n    MDCComponent<MDCChipTrailingActionFoundation> implements\n        MDCRippleCapableSurface {\n  get ripple(): MDCRipple {\n    return this.rippleSurface;\n  }\n\n  static attachTo(root: Element) {\n    return new MDCChipTrailingAction(root);\n  }\n\n  private rippleSurface!: MDCRipple;  // assigned in initialize()\n  private handleClick!:\n      SpecificEventListener<'click'>;  // assigned in initialSyncWithDOM()\n  private handleKeydown!:\n      SpecificEventListener<'keydown'>;  // assigned in initialSyncWithDOM()\n\n  initialize(\n      rippleFactory: MDCRippleFactory = (el, foundation) =>\n          new MDCRipple(el, foundation)) {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take\n    // a Partial<MDCFooAdapter>. To ensure we don't accidentally omit any\n    // methods, we need a separate, strongly typed adapter variable.\n    const rippleAdapter: MDCRippleAdapter = MDCRipple.createAdapter(this);\n    this.rippleSurface =\n        rippleFactory(this.root, new MDCRippleFoundation(rippleAdapter));\n  }\n\n  initialSyncWithDOM() {\n    this.handleClick = (evt: MouseEvent) => {\n      this.foundation.handleClick(evt);\n    };\n    this.handleKeydown = (evt: KeyboardEvent) => {\n      this.foundation.handleKeydown(evt);\n    };\n\n    this.listen('click', this.handleClick);\n    this.listen('keydown', this.handleKeydown);\n  }\n\n  destroy() {\n    this.rippleSurface.destroy();\n    this.unlisten('click', this.handleClick);\n    this.unlisten('keydown', this.handleKeydown);\n    super.destroy();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take\n    // a Partial<MDCFooAdapter>. To ensure we don't accidentally omit any\n    // methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCChipTrailingActionAdapter = {\n      focus: () => {\n        // TODO(b/157231863): Migate MDCComponent#root to HTMLElement\n        (this.root as HTMLElement).focus();\n      },\n      getAttribute: (attr) => this.root.getAttribute(attr),\n      notifyInteraction: (trigger) =>\n          this.emit<MDCChipTrailingActionInteractionEventDetail>(\n              strings.INTERACTION_EVENT, {trigger}, true /* shouldBubble */),\n      notifyNavigation: (key) => {\n        this.emit<MDCChipTrailingActionNavigationEventDetail>(\n            strings.NAVIGATION_EVENT, {key}, true /* shouldBubble */);\n      },\n      setAttribute: (attr, value) => {\n        this.root.setAttribute(attr, value);\n      },\n    };\n    return new MDCChipTrailingActionFoundation(adapter);\n  }\n\n  isNavigable() {\n    return this.foundation.isNavigable();\n  }\n\n  focus() {\n    this.foundation.focus();\n  }\n\n  removeFocus() {\n    this.foundation.removeFocus();\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport enum InteractionTrigger {\n  UNSPECIFIED,  // Default type\n  CLICK,\n  BACKSPACE_KEY,\n  DELETE_KEY,\n  SPACEBAR_KEY,\n  ENTER_KEY,\n}\n\nexport const strings = {\n  ARIA_HIDDEN: 'aria-hidden',\n  INTERACTION_EVENT: 'MDCChipTrailingAction:interaction',\n  NAVIGATION_EVENT: 'MDCChipTrailingAction:navigation',\n  TAB_INDEX: 'tabindex',\n};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {isNavigationEvent, KEY, normalizeKey} from '@material/dom/keyboard';\n\nimport {MDCChipTrailingActionAdapter} from './adapter';\nimport {InteractionTrigger, strings} from './constants';\n\nexport class MDCChipTrailingActionFoundation extends\n    MDCFoundation<MDCChipTrailingActionAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCChipTrailingActionAdapter {\n    return {\n      focus: () => undefined,\n      getAttribute: () => null,\n      setAttribute: () => undefined,\n      notifyInteraction: () => undefined,\n      notifyNavigation: () => undefined,\n    };\n  }\n\n  constructor(adapter?: Partial<MDCChipTrailingActionAdapter>) {\n    super({...MDCChipTrailingActionFoundation.defaultAdapter, ...adapter});\n  }\n\n  handleClick(evt: MouseEvent) {\n    evt.stopPropagation();\n    this.adapter.notifyInteraction(InteractionTrigger.CLICK);\n  }\n\n  handleKeydown(evt: KeyboardEvent) {\n    evt.stopPropagation();\n    const key = normalizeKey(evt);\n    if (this.shouldNotifyInteractionFromKey(key)) {\n      const trigger = this.getTriggerFromKey(key);\n      this.adapter.notifyInteraction(trigger);\n      return;\n    }\n\n    if (isNavigationEvent(evt)) {\n      this.adapter.notifyNavigation(key);\n      return;\n    }\n  }\n\n  removeFocus() {\n    this.adapter.setAttribute(strings.TAB_INDEX, '-1');\n  }\n\n  focus() {\n    this.adapter.setAttribute(strings.TAB_INDEX, '0');\n    this.adapter.focus();\n  }\n\n  isNavigable() {\n    return this.adapter.getAttribute(strings.ARIA_HIDDEN) !== 'true';\n  }\n\n  private shouldNotifyInteractionFromKey(key: string): boolean {\n    const isFromActionKey = key === KEY.ENTER || key === KEY.SPACEBAR;\n    const isFromDeleteKey = key === KEY.BACKSPACE || key === KEY.DELETE;\n\n    return isFromActionKey || isFromDeleteKey;\n  }\n\n  private getTriggerFromKey(key: string): InteractionTrigger {\n    if (key === KEY.SPACEBAR) {\n      return InteractionTrigger.SPACEBAR_KEY;\n    }\n\n    if (key === KEY.ENTER) {\n      return InteractionTrigger.ENTER_KEY;\n    }\n\n    if (key === KEY.DELETE) {\n      return InteractionTrigger.DELETE_KEY;\n    }\n\n    if (key === KEY.BACKSPACE) {\n      return InteractionTrigger.BACKSPACE_KEY;\n    }\n\n    // Default case, should never be returned\n    return InteractionTrigger.UNSPECIFIED;\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCChipTrailingActionFoundation;\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport * from './types';\nexport {strings as trailingActionStrings} from './constants';\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {InteractionTrigger} from './constants';\n\nexport interface MDCChipTrailingActionInteractionEventDetail {\n  trigger: InteractionTrigger;\n}\n\nexport interface MDCChipTrailingActionNavigationEventDetail {\n  key: string;\n}\n\n// Note: CustomEvent<T> is not supported by Closure Compiler.\n\nexport interface MDCChipTrailingActionInteractionEvent extends Event {\n  readonly detail: MDCChipTrailingActionInteractionEventDetail;\n}\n\nexport interface MDCChipTrailingActionNavigationEvent extends Event {\n  readonly detail: MDCChipTrailingActionNavigationEventDetail;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCCircularProgressAdapter {\n  addClass(className: string): void;\n  getDeterminateCircleAttribute(attributeName: string): string|null;\n  hasClass(className: string): boolean;\n  removeClass(className: string): void;\n  removeAttribute(attributeName: string): void;\n  setAttribute(attributeName: string, value: string): void;\n  setDeterminateCircleAttribute(attributeName: string, value: string): void;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCProgressIndicator} from '@material/progress-indicator/component';\nimport {MDCCircularProgressAdapter} from './adapter';\nimport {MDCCircularProgressFoundation} from './foundation';\n\nexport class MDCCircularProgress extends\n    MDCComponent<MDCCircularProgressFoundation> implements\n        MDCProgressIndicator {\n  private determinateCircle!: HTMLElement;\n\n  initialize() {\n    this.determinateCircle = this.root.querySelector<HTMLElement>(\n        MDCCircularProgressFoundation.strings.DETERMINATE_CIRCLE_SELECTOR)!;\n  }\n\n  static attachTo(root: Element) {\n    return new MDCCircularProgress(root);\n  }\n\n  /**\n   * Sets whether the progress indicator is in determinate mode.\n   * @param isDeterminate Whether the indicator should be determinate.\n   */\n  set determinate(value: boolean) {\n    this.foundation.setDeterminate(value);\n  }\n\n  /**\n   * Sets the current progress value. In indeterminate mode, this has no\n   * visual effect but will be reflected if the indicator is switched to\n   * determinate mode.\n   * @param value The current progress value, which must be between 0 and 1.\n   */\n  set progress(value: number) {\n    this.foundation.setProgress(value);\n  }\n\n  /**\n   * Whether the progress indicator is hidden.\n   */\n  get isClosed() {\n    return this.foundation.isClosed();\n  }\n\n  /**\n   * Shows the progress indicator.\n   */\n  open() {\n    this.foundation.open();\n  }\n\n  /**\n   * Hides the progress indicator.\n   */\n  close() {\n    this.foundation.close();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take\n    // a Partial<MDCFooAdapter>. To ensure we don't accidentally omit any\n    // methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCCircularProgressAdapter = {\n      addClass: (className: string) => {\n        this.root.classList.add(className);\n      },\n      getDeterminateCircleAttribute: (attributeName: string) =>\n          this.determinateCircle.getAttribute(attributeName),\n      hasClass: (className: string) => this.root.classList.contains(className),\n      removeClass: (className: string) => {\n        this.root.classList.remove(className);\n      },\n      removeAttribute: (attributeName: string) => {\n        this.root.removeAttribute(attributeName);\n      },\n      setAttribute: (attributeName: string, value: string) => {\n        this.root.setAttribute(attributeName, value);\n      },\n      setDeterminateCircleAttribute: (attributeName: string, value: string) => {\n        this.determinateCircle.setAttribute(attributeName, value);\n      },\n    };\n    return new MDCCircularProgressFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * CSS class names used in component.\n */\nexport const cssClasses = {\n  INDETERMINATE_CLASS: 'mdc-circular-progress--indeterminate',\n  CLOSED_CLASS: 'mdc-circular-progress--closed',\n};\n\n/**\n * Attributes and selectors used in component.\n */\nexport const strings = {\n  ARIA_HIDDEN: 'aria-hidden',\n  ARIA_VALUENOW: 'aria-valuenow',\n  DETERMINATE_CIRCLE_SELECTOR: '.mdc-circular-progress__determinate-circle',\n  RADIUS: 'r',\n  STROKE_DASHOFFSET: 'stroke-dashoffset',\n};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCProgressIndicatorFoundation} from '@material/progress-indicator/foundation';\nimport {MDCCircularProgressAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCCircularProgressFoundation extends\n    MDCFoundation<MDCCircularProgressAdapter> implements\n        MDCProgressIndicatorFoundation {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCCircularProgressAdapter {\n    return {\n      addClass: () => undefined,\n      getDeterminateCircleAttribute: () => null,\n      hasClass: () => false,\n      removeClass: () => undefined,\n      removeAttribute: () => undefined,\n      setAttribute: () => undefined,\n      setDeterminateCircleAttribute: () => undefined,\n    };\n  }\n\n  private closed!: boolean;\n  private determinate!: boolean;\n  private progress!: number;\n  private radius!: number;\n\n  constructor(adapter?: Partial<MDCCircularProgressAdapter>) {\n    super({...MDCCircularProgressFoundation.defaultAdapter, ...adapter});\n  }\n\n  init() {\n    this.closed = this.adapter.hasClass(cssClasses.CLOSED_CLASS);\n    this.determinate = !this.adapter.hasClass(cssClasses.INDETERMINATE_CLASS);\n    this.progress = 0;\n\n    if (this.determinate) {\n      this.adapter.setAttribute(\n          strings.ARIA_VALUENOW, this.progress.toString());\n    }\n\n    this.radius =\n        Number(this.adapter.getDeterminateCircleAttribute(strings.RADIUS));\n  }\n\n  /**\n   * Sets whether the progress indicator is in determinate mode.\n   * @param determinate Whether the indicator should be determinate.\n   */\n  setDeterminate(determinate: boolean) {\n    this.determinate = determinate;\n\n    if (this.determinate) {\n      this.adapter.removeClass(cssClasses.INDETERMINATE_CLASS);\n      this.setProgress(this.progress);\n    } else {\n      this.adapter.addClass(cssClasses.INDETERMINATE_CLASS);\n      this.adapter.removeAttribute(strings.ARIA_VALUENOW);\n    }\n  }\n\n  isDeterminate() {\n    return this.determinate;\n  }\n\n  /**\n   * Sets the current progress value. In indeterminate mode, this has no\n   * visual effect but will be reflected if the indicator is switched to\n   * determinate mode.\n   * @param value The current progress value, which must be between 0 and 1.\n   */\n  setProgress(value: number) {\n    this.progress = value;\n    if (this.determinate) {\n      const unfilledArcLength =\n          (1 - this.progress) * (2 * Math.PI * this.radius);\n\n      this.adapter.setDeterminateCircleAttribute(\n          strings.STROKE_DASHOFFSET, `${unfilledArcLength}`);\n      this.adapter.setAttribute(\n          strings.ARIA_VALUENOW, this.progress.toString());\n    }\n  }\n\n  getProgress() {\n    return this.progress;\n  }\n\n  /**\n   * Shows the progress indicator.\n   */\n  open() {\n    this.closed = false;\n    this.adapter.removeClass(cssClasses.CLOSED_CLASS);\n    this.adapter.removeAttribute(strings.ARIA_HIDDEN);\n  }\n\n  /**\n   * Hides the progress indicator\n   */\n  close() {\n    this.closed = true;\n    this.adapter.addClass(cssClasses.CLOSED_CLASS);\n    this.adapter.setAttribute(strings.ARIA_HIDDEN, 'true');\n  }\n\n  /**\n   * @return Returns whether the progress indicator is hidden.\n   */\n  isClosed() {\n    return this.closed;\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCCircularProgressFoundation;\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nimport {SortValue} from './constants';\nimport {MDCDataTableRowSelectionChangedEventDetail, ProgressIndicatorStyles, SortActionEventDetail} from './types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCDataTableAdapter {\n  /**\n   * Adds CSS class name to root element.\n   *\n   * @param className CSS class name to add to root element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes CSS class name from root element.\n   *\n   * @param className CSS class name to add to root element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Adds a class name to row element at given row index excluding header row.\n   *\n   * @param rowIndex Index of row element excluding header row.\n   * @param cssClasses CSS Class string to add.\n   */\n  addClassAtRowIndex(rowIndex: number, cssClasses: string): void;\n\n  /**\n   * @return Row count excluding header row.\n   */\n  getRowCount(): number;\n\n  /**\n   * @return Array of row elements excluding header row.\n   */\n  getRowElements(): Element[];\n\n  /**\n   * Returns row id of row element at given row index based on `data-row-id` attribute on row element `tr`.\n   *\n   * @param rowIndex Index of row element.\n   * @return Row id of row element, returns `null` in absence of `data-row-id` attribute on row element.\n   */\n  getRowIdAtIndex(rowIndex: number): string | null;\n\n  /**\n   * Returns index of row element that contains give child element. Returns -1 if element is not child of any row\n   * element.\n   *\n   * @param el Child element of row element.\n   * @return Index of row element.\n   */\n  getRowIndexByChildElement(el: Element): number;\n\n  /**\n   * @return Selected row count.\n   */\n  getSelectedRowCount(): number;\n\n  /**\n   * @param rowIndex Index of row element.\n   * @return True if row checkbox at given row index is checked.\n   */\n  isCheckboxAtRowIndexChecked(rowIndex: number): boolean;\n\n  /**\n   * @return True if header row checkbox is checked.\n   */\n  isHeaderRowCheckboxChecked(): boolean;\n\n  /**\n   * @return True if table rows are selectable.\n   */\n  isRowsSelectable(): boolean;\n\n  /**\n   * Notifies when row selection is changed.\n   *\n   * @param data Event detail data for row selection changed event.\n   */\n  notifyRowSelectionChanged(data: MDCDataTableRowSelectionChangedEventDetail): void;\n\n  /**\n   * Notifies when header row is checked.\n   */\n  notifySelectedAll(): void;\n\n  /**\n   * Notifies when header row is unchecked.\n   */\n  notifyUnselectedAll(): void;\n\n  /**\n   * Initializes header row checkbox. Destroys previous header row checkbox instance if any.\n   * @return Can return Promise only if registering checkbox is asynchronous.\n   */\n  registerHeaderRowCheckbox(): Promise<void> | void;\n\n  /**\n   * Initializes all row checkboxes. Destroys previous row checkbox instances if any. This is usually called when row\n   * checkboxes are added or removed from table.\n   * @return Can return Promise only if registering checkbox is asynchronous.\n   */\n  registerRowCheckboxes(): Promise<void> | void;\n\n  /**\n   * Removes class name from row element at give row index.\n   *\n   * @param rowIndex Index of row element excluding header row element.\n   * @param cssClasses Class name string.\n   */\n  removeClassAtRowIndex(rowIndex: number, cssClasses: string): void;\n\n  /**\n   * Sets attribute to row element at given row index.\n   *\n   * @param rowIndex Index of row element excluding header row element.\n   * @param attr Name of attribute.\n   * @param value Value of attribute.\n   */\n  setAttributeAtRowIndex(rowIndex: number, attr: string, value: string): void;\n\n  /**\n   * Sets header row checkbox checked or unchecked.\n   *\n   * @param checked True to set header row checkbox checked.\n   */\n  setHeaderRowCheckboxChecked(checked: boolean): void;\n\n  /**\n   * Sets header row checkbox to indeterminate.\n   *\n   * @param indeterminate True to set header row checkbox indeterminate.\n   */\n  setHeaderRowCheckboxIndeterminate(indeterminate: boolean): void;\n\n  /**\n   * Sets row checkbox to checked or unchecked at given row index.\n   *\n   * @param rowIndex Index of row element excluding header row element.\n   * @param checked True to set checked.\n   */\n  setRowCheckboxCheckedAtIndex(rowIndex: number, checked: boolean): void;\n\n  /**\n   * @return Total count of header cells.\n   */\n  getHeaderCellCount(): number;\n\n  /**\n   * @return Array of header cell elements.\n   */\n  getHeaderCellElements(): Element[];\n\n  /**\n   * @return Attribute value for given header cell index.\n   */\n  getAttributeByHeaderCellIndex(columnIndex: number, attribute: string): string\n      |null;\n\n  /**\n   * Sets attribute of a header cell by index.\n   */\n  setAttributeByHeaderCellIndex(\n      columnIndex: number, attribute: string, value: string): void;\n\n  /**\n   * Sets class name of a header cell by index.\n   */\n  setClassNameByHeaderCellIndex(columnIndex: number, className: string): void;\n\n  /**\n   * Removes a class name of a header cell by index.\n   */\n  removeClassNameByHeaderCellIndex(columnIndex: number, className: string):\n      void;\n\n  /**\n   * Notifies when column is sorted.\n   */\n  notifySortAction(data: SortActionEventDetail): void;\n\n  /**\n   * @return Returns computed styles height of table container element.\n   */\n  getTableContainerHeight(): number;\n\n  /**\n   * @return Returns computed styles height of table's header element.\n   */\n  getTableHeaderHeight(): number;\n\n  /**\n   * Sets progress indicator CSS styles to position it on top of table body.\n   */\n  setProgressIndicatorStyles(styles: ProgressIndicatorStyles): void;\n\n  /**\n   * Sets appropriate sort status label by header cell index. Skips setting sort\n   * status label if header cell is not sortable.\n   *\n   * Example status label to set for sortValue:\n   *\n   *   - `SortValue.ASCENDING`: 'Sorted in ascending order'\n   *   - `SortValue.DESCENDING`: 'Sorted in descending order'\n   *   - `SortValue.NONE`: '' (Empty string)\n   */\n  setSortStatusLabelByHeaderCellIndex(\n      columnIndex: number, sortValue: SortValue): void;\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCCheckbox, MDCCheckboxFactory} from '@material/checkbox/component';\nimport {closest} from '@material/dom/ponyfill';\nimport {MDCLinearProgress} from '@material/linear-progress/component';\n\nimport {MDCDataTableAdapter} from './adapter';\nimport {cssClasses, dataAttributes, events, messages, selectors, SortValue} from './constants';\nimport {MDCDataTableFoundation} from './foundation';\nimport {MDCDataTableRowSelectionChangedEventDetail} from './types';\n\n/**\n * Implementation of `MDCDataTableFoundation`\n */\nexport class MDCDataTable extends MDCComponent<MDCDataTableFoundation> {\n  static attachTo(root: Element): MDCDataTable {\n    return new MDCDataTable(root);\n  }\n\n  private headerRowCheckbox!: MDCCheckbox;\n  private rowCheckboxList!: MDCCheckbox[];\n  private checkboxFactory!: MDCCheckboxFactory;\n  private linearProgress!: MDCLinearProgress;\n  private headerRow!: HTMLElement;\n  private content!: HTMLElement;\n  private handleHeaderRowCheckboxChange!: SpecificEventListener<'change'>;\n  private handleRowCheckboxChange!: SpecificEventListener<'change'>;\n  private headerRowClickListener!:\n      SpecificEventListener<'click'>;  // Assigned in `initialSyncWithDOM()`\n\n  initialize(checkboxFactory: MDCCheckboxFactory = (el: Element) => new MDCCheckbox(el)) {\n    this.checkboxFactory = checkboxFactory;\n  }\n\n  initialSyncWithDOM() {\n    this.headerRow =\n        this.root.querySelector(`.${cssClasses.HEADER_ROW}`) as HTMLElement;\n    this.handleHeaderRowCheckboxChange = () => {\n      this.foundation.handleHeaderRowCheckboxChange();\n    };\n    this.headerRow.addEventListener(\n        'change', this.handleHeaderRowCheckboxChange);\n\n    this.headerRowClickListener = (event) => {\n      this.handleHeaderRowClick(event);\n    };\n    this.headerRow.addEventListener('click', this.headerRowClickListener);\n\n\n    this.content =\n        this.root.querySelector(`.${cssClasses.CONTENT}`) as HTMLElement;\n    this.handleRowCheckboxChange = (event) => {\n      this.foundation.handleRowCheckboxChange(event);\n    };\n    this.content.addEventListener('change', this.handleRowCheckboxChange);\n\n    this.layout();\n  }\n\n  /**\n   * Re-initializes header row checkbox and row checkboxes when selectable rows are added or removed from table.\n   */\n  layout() {\n    this.foundation.layout();\n  }\n\n  /**\n   * @return Returns array of header row cell elements.\n   */\n  getHeaderCells(): Element[] {\n    return [].slice.call(this.root.querySelectorAll(selectors.HEADER_CELL));\n  }\n\n  /**\n   * @return Returns array of row elements.\n   */\n  getRows(): Element[] {\n    return this.foundation.getRows();\n  }\n\n  /**\n   * @return Returns array of selected row ids.\n   */\n  getSelectedRowIds(): Array<string|null> {\n    return this.foundation.getSelectedRowIds();\n  }\n\n  /**\n   * Sets selected row ids. Overwrites previously selected rows.\n   * @param rowIds Array of row ids that needs to be selected.\n   */\n  setSelectedRowIds(rowIds: string[]) {\n    this.foundation.setSelectedRowIds(rowIds);\n  }\n\n  /**\n   * Shows progress indicator when data table is in loading state.\n   */\n  showProgress() {\n    this.getLinearProgress().open();\n    this.foundation.showProgress();\n  }\n\n  /**\n   * Hides progress indicator after data table is finished loading.\n   */\n  hideProgress() {\n    this.foundation.hideProgress();\n    this.getLinearProgress().close();\n  }\n\n  destroy() {\n    if (this.handleHeaderRowCheckboxChange) {\n      this.headerRow.removeEventListener(\n          'change', this.handleHeaderRowCheckboxChange);\n    }\n    if (this.headerRowClickListener) {\n      this.headerRow.removeEventListener('click', this.headerRowClickListener);\n    }\n    if (this.handleRowCheckboxChange) {\n      this.content.removeEventListener('change', this.handleRowCheckboxChange);\n    }\n\n    if (this.headerRowCheckbox) {\n      this.headerRowCheckbox.destroy();\n    }\n    if (this.rowCheckboxList) {\n      for (const checkbox of this.rowCheckboxList) {\n        checkbox.destroy();\n      }\n    }\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCDataTableAdapter = {\n      addClass: (className) => {\n        this.root.classList.add(className);\n      },\n      removeClass: (className) => {\n        this.root.classList.remove(className);\n      },\n      getHeaderCellElements: () => this.getHeaderCells(),\n      getHeaderCellCount: () => this.getHeaderCells().length,\n      getAttributeByHeaderCellIndex: (index, attribute) => {\n        return this.getHeaderCells()[index].getAttribute(attribute);\n      },\n      setAttributeByHeaderCellIndex: (index, attribute, value) => {\n        this.getHeaderCells()[index].setAttribute(attribute, value);\n      },\n      setClassNameByHeaderCellIndex: (index, className) => {\n        this.getHeaderCells()[index].classList.add(className);\n      },\n      removeClassNameByHeaderCellIndex: (index, className) => {\n        this.getHeaderCells()[index].classList.remove(className);\n      },\n      notifySortAction: (data) => {\n        this.emit(events.SORTED, data, /** shouldBubble */ true);\n      },\n      getTableContainerHeight: () => {\n        const tableContainer = this.root.querySelector<HTMLElement>(\n            `.${cssClasses.TABLE_CONTAINER}`);\n\n        if (!tableContainer) {\n          throw new Error('MDCDataTable: Table container element not found.');\n        }\n\n        return tableContainer.getBoundingClientRect().height;\n      },\n      getTableHeaderHeight: () => {\n        const tableHeader =\n            this.root.querySelector<HTMLElement>(selectors.HEADER_ROW);\n\n        if (!tableHeader) {\n          throw new Error('MDCDataTable: Table header element not found.');\n        }\n\n        return tableHeader.getBoundingClientRect().height;\n      },\n      setProgressIndicatorStyles: (styles) => {\n        const progressIndicator =\n            this.root.querySelector<HTMLElement>(selectors.PROGRESS_INDICATOR);\n\n        if (!progressIndicator) {\n          throw new Error(\n              'MDCDataTable: Progress indicator element not found.');\n        }\n\n        progressIndicator.style.setProperty('height', styles.height);\n        progressIndicator.style.setProperty('top', styles.top);\n      },\n      addClassAtRowIndex: (rowIndex: number, className: string) => {\n        this.getRows()[rowIndex].classList.add(className);\n      },\n      getRowCount: () => this.getRows().length,\n      getRowElements:\n          () => [].slice.call(this.root.querySelectorAll(selectors.ROW)),\n      getRowIdAtIndex: (rowIndex: number) =>\n          this.getRows()[rowIndex].getAttribute(dataAttributes.ROW_ID),\n      getRowIndexByChildElement: (el: Element) => {\n        return this.getRows().indexOf(\n            (closest(el, selectors.ROW) as HTMLElement));\n      },\n      getSelectedRowCount: () =>\n          this.root.querySelectorAll(selectors.ROW_SELECTED).length,\n      isCheckboxAtRowIndexChecked: (rowIndex: number) =>\n          this.rowCheckboxList[rowIndex].checked,\n      isHeaderRowCheckboxChecked: () => this.headerRowCheckbox.checked,\n      isRowsSelectable: () =>\n          !!this.root.querySelector(selectors.ROW_CHECKBOX) ||\n          !!this.root.querySelector(selectors.HEADER_ROW_CHECKBOX),\n      notifyRowSelectionChanged:\n          (data: MDCDataTableRowSelectionChangedEventDetail) => {\n            this.emit(\n                events.ROW_SELECTION_CHANGED, {\n                  row: this.getRowByIndex(data.rowIndex),\n                  rowId: this.getRowIdByIndex(data.rowIndex),\n                  rowIndex: data.rowIndex,\n                  selected: data.selected,\n                },\n                /** shouldBubble */ true);\n          },\n      notifySelectedAll: () => {\n        this.emit(events.SELECTED_ALL, {}, /** shouldBubble */ true);\n      },\n      notifyUnselectedAll: () => {\n        this.emit(events.UNSELECTED_ALL, {}, /** shouldBubble */ true);\n      },\n      registerHeaderRowCheckbox: () => {\n        if (this.headerRowCheckbox) {\n          this.headerRowCheckbox.destroy();\n        }\n\n        const checkboxEl =\n            (this.root.querySelector(selectors.HEADER_ROW_CHECKBOX) as\n             HTMLElement);\n        this.headerRowCheckbox = this.checkboxFactory(checkboxEl);\n      },\n      registerRowCheckboxes: () => {\n        if (this.rowCheckboxList) {\n          this.rowCheckboxList.forEach((checkbox) => {\n            checkbox.destroy();\n          });\n        }\n\n        this.rowCheckboxList = [];\n        this.getRows().forEach((rowEl) => {\n          const checkbox = this.checkboxFactory(\n              (rowEl.querySelector(selectors.ROW_CHECKBOX) as HTMLElement));\n          this.rowCheckboxList.push(checkbox);\n        });\n      },\n      removeClassAtRowIndex: (rowIndex: number, className: string) => {\n        this.getRows()[rowIndex].classList.remove(className);\n      },\n      setAttributeAtRowIndex:\n          (rowIndex: number, attr: string, value: string) => {\n            this.getRows()[rowIndex].setAttribute(attr, value);\n          },\n      setHeaderRowCheckboxChecked: (checked: boolean) => {\n        this.headerRowCheckbox.checked = checked;\n      },\n      setHeaderRowCheckboxIndeterminate: (indeterminate: boolean) => {\n        this.headerRowCheckbox.indeterminate = indeterminate;\n      },\n      setRowCheckboxCheckedAtIndex: (rowIndex: number, checked: boolean) => {\n        this.rowCheckboxList[rowIndex].checked = checked;\n      },\n      setSortStatusLabelByHeaderCellIndex: (\n          columnIndex: number, sortValue: SortValue) => {\n        const headerCell = this.getHeaderCells()[columnIndex];\n        const sortStatusLabel =\n            headerCell.querySelector<HTMLElement>(selectors.SORT_STATUS_LABEL);\n\n        if (!sortStatusLabel) return;\n\n        sortStatusLabel.textContent =\n            this.getSortStatusMessageBySortValue(sortValue);\n      },\n    };\n    return new MDCDataTableFoundation(adapter);\n  }\n\n  private getRowByIndex(index: number): Element {\n    return this.getRows()[index];\n  }\n\n  private getRowIdByIndex(index: number): string|null {\n    return this.getRowByIndex(index).getAttribute(dataAttributes.ROW_ID);\n  }\n\n  private handleHeaderRowClick(event: Event): void {\n    const headerCell =\n        closest(event.target as Element, selectors.HEADER_CELL_WITH_SORT) as\n        HTMLElement;\n\n    if (!headerCell) {\n      return;\n    }\n\n    const columnId = headerCell.getAttribute(dataAttributes.COLUMN_ID);\n    const columnIndex = this.getHeaderCells().indexOf(headerCell);\n    if (columnIndex === -1) {\n      return;\n    }\n\n    this.foundation.handleSortAction({columnId, columnIndex, headerCell});\n  }\n\n  private getSortStatusMessageBySortValue(sortValue: SortValue): string {\n    switch (sortValue) {\n      case SortValue.ASCENDING:\n        return messages.SORTED_IN_ASCENDING;\n      case SortValue.DESCENDING:\n        return messages.SORTED_IN_DESCENDING;\n      default:\n        return '';\n    }\n  }\n\n  private getLinearProgressElement(): HTMLElement {\n    const el =\n        this.root.querySelector<HTMLElement>(`.${cssClasses.LINEAR_PROGRESS}`);\n    if (!el) {\n      throw new Error('MDCDataTable: linear progress element is not found.');\n    }\n\n    return el;\n  }\n\n  private getLinearProgress(): MDCLinearProgress {\n    if (!this.linearProgress) {\n      const el = this.getLinearProgressElement();\n      this.linearProgress = new MDCLinearProgress(el);\n    }\n\n    return this.linearProgress;\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * CSS class names used in component.\n */\nexport const cssClasses = {\n  CELL: 'mdc-data-table__cell',\n  CELL_NUMERIC: 'mdc-data-table__cell--numeric',\n  CONTENT: 'mdc-data-table__content',\n  HEADER_CELL: 'mdc-data-table__header-cell',\n  HEADER_CELL_LABEL: 'mdc-data-table__header-cell-label',\n  HEADER_CELL_SORTED: 'mdc-data-table__header-cell--sorted',\n  HEADER_CELL_SORTED_DESCENDING:\n      'mdc-data-table__header-cell--sorted-descending',\n  HEADER_CELL_WITH_SORT: 'mdc-data-table__header-cell--with-sort',\n  HEADER_CELL_WRAPPER: 'mdc-data-table__header-cell-wrapper',\n  HEADER_ROW: 'mdc-data-table__header-row',\n  HEADER_ROW_CHECKBOX: 'mdc-data-table__header-row-checkbox',\n  IN_PROGRESS: 'mdc-data-table--in-progress',\n  LINEAR_PROGRESS: 'mdc-data-table__linear-progress',\n  PAGINATION_ROWS_PER_PAGE_LABEL:\n      'mdc-data-table__pagination-rows-per-page-label',\n  PAGINATION_ROWS_PER_PAGE_SELECT:\n      'mdc-data-table__pagination-rows-per-page-select',\n  PROGRESS_INDICATOR: 'mdc-data-table__progress-indicator',\n  ROOT: 'mdc-data-table',\n  ROW: 'mdc-data-table__row',\n  ROW_CHECKBOX: 'mdc-data-table__row-checkbox',\n  ROW_SELECTED: 'mdc-data-table__row--selected',\n  SORT_ICON_BUTTON: 'mdc-data-table__sort-icon-button',\n  SORT_STATUS_LABEL: 'mdc-data-table__sort-status-label',\n  TABLE_CONTAINER: 'mdc-data-table__table-container',\n};\n\n/**\n * DOM attributes used in component.\n */\nexport const attributes = {\n  ARIA_SELECTED: 'aria-selected',\n  ARIA_SORT: 'aria-sort',\n};\n\n/**\n * List of data attributes used in component.\n */\nexport const dataAttributes = {\n  COLUMN_ID: 'data-column-id',\n  ROW_ID: 'data-row-id',\n};\n\n/**\n * CSS selectors used in component.\n */\nexport const selectors = {\n  CONTENT: `.${cssClasses.CONTENT}`,\n  HEADER_CELL: `.${cssClasses.HEADER_CELL}`,\n  HEADER_CELL_WITH_SORT: `.${cssClasses.HEADER_CELL_WITH_SORT}`,\n  HEADER_ROW: `.${cssClasses.HEADER_ROW}`,\n  HEADER_ROW_CHECKBOX: `.${cssClasses.HEADER_ROW_CHECKBOX}`,\n  PROGRESS_INDICATOR: `.${cssClasses.PROGRESS_INDICATOR}`,\n  ROW: `.${cssClasses.ROW}`,\n  ROW_CHECKBOX: `.${cssClasses.ROW_CHECKBOX}`,\n  ROW_SELECTED: `.${cssClasses.ROW_SELECTED}`,\n  SORT_ICON_BUTTON: `.${cssClasses.SORT_ICON_BUTTON}`,\n  SORT_STATUS_LABEL: `.${cssClasses.SORT_STATUS_LABEL}`,\n};\n\n/**\n * Messages used in component.\n */\nexport const messages = {\n  SORTED_IN_DESCENDING: 'Sorted in descending order',\n  SORTED_IN_ASCENDING: 'Sorted in ascending order',\n};\n\n/**\n * Attributes and selectors used in component.\n * @deprecated Use `attributes`, `dataAttributes` and `selectors` instead.\n */\nexport const strings = {\n  ARIA_SELECTED: attributes.ARIA_SELECTED,\n  ARIA_SORT: attributes.ARIA_SORT,\n  DATA_ROW_ID_ATTR: dataAttributes.ROW_ID,\n  HEADER_ROW_CHECKBOX_SELECTOR: selectors.HEADER_ROW_CHECKBOX,\n  ROW_CHECKBOX_SELECTOR: selectors.ROW_CHECKBOX,\n  ROW_SELECTED_SELECTOR: selectors.ROW_SELECTED,\n  ROW_SELECTOR: selectors.ROW,\n};\n\n/**\n * Sort values defined by ARIA.\n * See https://www.w3.org/WAI/PF/aria/states_and_properties#aria-sort\n */\nexport enum SortValue {\n  // Items are sorted in ascending order by this column.\n  ASCENDING = 'ascending',\n\n  // Items are sorted in descending order by this column.\n  DESCENDING = 'descending',\n\n  // There is no defined sort applied to the column.\n  NONE = 'none',\n\n  // A sort algorithm other than ascending or descending has been applied.\n  OTHER = 'other',\n}\n\n/**\n * Event names used in component.\n */\nexport const events = {\n  ROW_SELECTION_CHANGED: 'MDCDataTable:rowSelectionChanged',\n  SELECTED_ALL: 'MDCDataTable:selectedAll',\n  UNSELECTED_ALL: 'MDCDataTable:unselectedAll',\n  SORTED: 'MDCDataTable:sorted',\n};\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\n\nimport {MDCDataTableAdapter} from './adapter';\nimport {cssClasses, SortValue, strings} from './constants';\nimport {SortActionEventData} from './types';\n\n/**\n * The Foundation of data table component containing pure business logic, any\n * logic requiring DOM manipulation are delegated to adapter methods.\n */\nexport class MDCDataTableFoundation extends MDCFoundation<MDCDataTableAdapter> {\n  static get defaultAdapter(): MDCDataTableAdapter {\n    return {\n      addClass: () => undefined,\n      addClassAtRowIndex: () => undefined,\n      getAttributeByHeaderCellIndex: () => '',\n      getHeaderCellCount: () => 0,\n      getHeaderCellElements: () => [],\n      getRowCount: () => 0,\n      getRowElements: () => [],\n      getRowIdAtIndex: () => '',\n      getRowIndexByChildElement: () => 0,\n      getSelectedRowCount: () => 0,\n      getTableContainerHeight: () => 0,\n      getTableHeaderHeight: () => 0,\n      isCheckboxAtRowIndexChecked: () => false,\n      isHeaderRowCheckboxChecked: () => false,\n      isRowsSelectable: () => false,\n      notifyRowSelectionChanged: () => undefined,\n      notifySelectedAll: () => undefined,\n      notifySortAction: () => undefined,\n      notifyUnselectedAll: () => undefined,\n      registerHeaderRowCheckbox: () => undefined,\n      registerRowCheckboxes: () => undefined,\n      removeClass: () => undefined,\n      removeClassAtRowIndex: () => undefined,\n      removeClassNameByHeaderCellIndex: () => undefined,\n      setAttributeAtRowIndex: () => undefined,\n      setAttributeByHeaderCellIndex: () => undefined,\n      setClassNameByHeaderCellIndex: () => undefined,\n      setHeaderRowCheckboxChecked: () => undefined,\n      setHeaderRowCheckboxIndeterminate: () => undefined,\n      setProgressIndicatorStyles: () => undefined,\n      setRowCheckboxCheckedAtIndex: () => undefined,\n      setSortStatusLabelByHeaderCellIndex: () => undefined,\n    };\n  }\n\n  constructor(adapter?: Partial<MDCDataTableAdapter>) {\n    super({...MDCDataTableFoundation.defaultAdapter, ...adapter});\n  }\n\n  /**\n   * Re-initializes header row checkbox and row checkboxes when selectable rows are added or removed from table.\n   * Use this if registering checkbox is synchronous.\n   */\n  layout() {\n    if (this.adapter.isRowsSelectable()) {\n      this.adapter.registerHeaderRowCheckbox();\n      this.adapter.registerRowCheckboxes();\n\n      this.setHeaderRowCheckboxState();\n    }\n  }\n\n  /**\n   * Re-initializes header row checkbox and row checkboxes when selectable rows are added or removed from table.\n   * Use this if registering checkbox is asynchronous.\n   */\n  async layoutAsync(): Promise<void> {\n    if (this.adapter.isRowsSelectable()) {\n      await this.adapter.registerHeaderRowCheckbox();\n      await this.adapter.registerRowCheckboxes();\n\n      this.setHeaderRowCheckboxState();\n    }\n  }\n\n  /**\n   * @return Returns array of row elements.\n   */\n  getRows(): Element[] {\n    return this.adapter.getRowElements();\n  }\n\n  /**\n   * @return Array of header cell elements.\n   */\n  getHeaderCells(): Element[] {\n    return this.adapter.getHeaderCellElements();\n  }\n\n  /**\n   * Sets selected row ids. Overwrites previously selected rows.\n   * @param rowIds Array of row ids that needs to be selected.\n   */\n  setSelectedRowIds(rowIds: string[]) {\n    for (let rowIndex = 0; rowIndex < this.adapter.getRowCount(); rowIndex++) {\n      const rowId = this.adapter.getRowIdAtIndex(rowIndex);\n\n      let isSelected = false;\n      if (rowId && rowIds.indexOf(rowId) >= 0) {\n        isSelected = true;\n      }\n\n      this.adapter.setRowCheckboxCheckedAtIndex(rowIndex, isSelected);\n      this.selectRowAtIndex(rowIndex, isSelected);\n    }\n\n    this.setHeaderRowCheckboxState();\n  }\n\n  /**\n   * @return Returns array of all row ids.\n   */\n  getRowIds(): Array<string|null> {\n    const rowIds = [];\n    for (let rowIndex = 0; rowIndex < this.adapter.getRowCount(); rowIndex++) {\n      rowIds.push(this.adapter.getRowIdAtIndex(rowIndex));\n    }\n\n    return rowIds;\n  }\n\n  /**\n   * @return Returns array of selected row ids.\n   */\n  getSelectedRowIds(): Array<string|null> {\n    const selectedRowIds: Array<string|null> = [];\n    for (let rowIndex = 0; rowIndex < this.adapter.getRowCount(); rowIndex++) {\n      if (this.adapter.isCheckboxAtRowIndexChecked(rowIndex)) {\n        selectedRowIds.push(this.adapter.getRowIdAtIndex(rowIndex));\n      }\n    }\n\n    return selectedRowIds;\n  }\n\n  /**\n   * Handles header row checkbox change event.\n   */\n  handleHeaderRowCheckboxChange() {\n    const isHeaderChecked = this.adapter.isHeaderRowCheckboxChecked();\n\n    for (let rowIndex = 0; rowIndex < this.adapter.getRowCount(); rowIndex++) {\n      this.adapter.setRowCheckboxCheckedAtIndex(rowIndex, isHeaderChecked);\n      this.selectRowAtIndex(rowIndex, isHeaderChecked);\n    }\n\n    if (isHeaderChecked) {\n      this.adapter.notifySelectedAll();\n    } else {\n      this.adapter.notifyUnselectedAll();\n    }\n  }\n\n  /**\n   * Handles change event originated from row checkboxes.\n   */\n  handleRowCheckboxChange(event: Event) {\n    const rowIndex = this.adapter.getRowIndexByChildElement(\n        event.target as HTMLInputElement);\n\n    if (rowIndex === -1) {\n      return;\n    }\n\n    const selected = this.adapter.isCheckboxAtRowIndexChecked(rowIndex);\n\n    this.selectRowAtIndex(rowIndex, selected);\n    this.setHeaderRowCheckboxState();\n\n    const rowId = this.adapter.getRowIdAtIndex(rowIndex);\n    this.adapter.notifyRowSelectionChanged({rowId, rowIndex, selected});\n  }\n\n  /**\n   * Handles sort action on sortable header cell.\n   */\n  handleSortAction(eventData: SortActionEventData) {\n    const {columnId, columnIndex, headerCell} = eventData;\n\n    // Reset sort attributes / classes on other header cells.\n    for (let index = 0; index < this.adapter.getHeaderCellCount(); index++) {\n      if (index === columnIndex) {\n        continue;\n      }\n\n      this.adapter.removeClassNameByHeaderCellIndex(\n          index, cssClasses.HEADER_CELL_SORTED);\n      this.adapter.removeClassNameByHeaderCellIndex(\n          index, cssClasses.HEADER_CELL_SORTED_DESCENDING);\n      this.adapter.setAttributeByHeaderCellIndex(\n          index, strings.ARIA_SORT, SortValue.NONE);\n      this.adapter.setSortStatusLabelByHeaderCellIndex(index, SortValue.NONE);\n    }\n\n    // Set appropriate sort attributes / classes on target header cell.\n    this.adapter.setClassNameByHeaderCellIndex(\n        columnIndex, cssClasses.HEADER_CELL_SORTED);\n\n    const currentSortValue = this.adapter.getAttributeByHeaderCellIndex(\n        columnIndex, strings.ARIA_SORT);\n    let sortValue = SortValue.NONE;\n\n    // Set to descending if sorted on ascending order.\n    if (currentSortValue === SortValue.ASCENDING) {\n      this.adapter.setClassNameByHeaderCellIndex(\n          columnIndex, cssClasses.HEADER_CELL_SORTED_DESCENDING);\n      this.adapter.setAttributeByHeaderCellIndex(\n          columnIndex, strings.ARIA_SORT, SortValue.DESCENDING);\n      sortValue = SortValue.DESCENDING;\n      // Set to ascending if sorted on descending order.\n    } else if (currentSortValue === SortValue.DESCENDING) {\n      this.adapter.removeClassNameByHeaderCellIndex(\n          columnIndex, cssClasses.HEADER_CELL_SORTED_DESCENDING);\n      this.adapter.setAttributeByHeaderCellIndex(\n          columnIndex, strings.ARIA_SORT, SortValue.ASCENDING);\n      sortValue = SortValue.ASCENDING;\n    } else {\n      // Set to ascending by default when not sorted.\n      this.adapter.setAttributeByHeaderCellIndex(\n          columnIndex, strings.ARIA_SORT, SortValue.ASCENDING);\n      sortValue = SortValue.ASCENDING;\n    }\n\n    this.adapter.setSortStatusLabelByHeaderCellIndex(columnIndex, sortValue);\n\n    this.adapter.notifySortAction({\n      columnId,\n      columnIndex,\n      headerCell,\n      sortValue,\n    });\n  }\n\n  /**\n   * Shows progress indicator blocking only the table body content when in\n   * loading state.\n   */\n  showProgress() {\n    const tableHeaderHeight = this.adapter.getTableHeaderHeight();\n    // Calculate the height of table content (Not scroll content) excluding\n    // header row height.\n    const height = this.adapter.getTableContainerHeight() - tableHeaderHeight;\n    const top = tableHeaderHeight;\n\n    this.adapter.setProgressIndicatorStyles({\n      height: `${height}px`,\n      top: `${top}px`,\n    });\n    this.adapter.addClass(cssClasses.IN_PROGRESS);\n  }\n\n  /**\n   * Hides progress indicator when data table is finished loading.\n   */\n  hideProgress() {\n    this.adapter.removeClass(cssClasses.IN_PROGRESS);\n  }\n\n  /**\n   * Updates header row checkbox state based on number of rows selected.\n   */\n  private setHeaderRowCheckboxState() {\n    if (this.adapter.getSelectedRowCount() === 0) {\n      this.adapter.setHeaderRowCheckboxChecked(false);\n      this.adapter.setHeaderRowCheckboxIndeterminate(false);\n    } else if (\n        this.adapter.getSelectedRowCount() === this.adapter.getRowCount()) {\n      this.adapter.setHeaderRowCheckboxChecked(true);\n      this.adapter.setHeaderRowCheckboxIndeterminate(false);\n    } else {\n      this.adapter.setHeaderRowCheckboxIndeterminate(true);\n      this.adapter.setHeaderRowCheckboxChecked(false);\n    }\n  }\n\n  /**\n   * Sets the attributes of row element based on selection state.\n   */\n  private selectRowAtIndex(rowIndex: number, selected: boolean) {\n    if (selected) {\n      this.adapter.addClassAtRowIndex(rowIndex, cssClasses.ROW_SELECTED);\n      this.adapter.setAttributeAtRowIndex(\n          rowIndex, strings.ARIA_SELECTED, 'true');\n    } else {\n      this.adapter.removeClassAtRowIndex(rowIndex, cssClasses.ROW_SELECTED);\n      this.adapter.setAttributeAtRowIndex(\n          rowIndex, strings.ARIA_SELECTED, 'false');\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport * from './constants';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {SortValue} from './constants';\n\nexport interface MDCDataTableRowSelectionChangedEventDetail {\n  rowIndex: number;\n  rowId: string | null;\n  selected: boolean;\n}\n\n/**\n * Event data required for sort action callback - `handleSortAction()`.\n * Component must send this data to foundation when sort action triggered on\n * sortable header cell.\n */\nexport interface SortActionEventData {\n  columnId: string|null;\n  columnIndex: number;\n  headerCell: HTMLElement;\n}\n\n/**\n * Event detail triggered by foundation on sort action. This event detail is\n * used to trigger DOM event by component.\n */\nexport interface SortActionEventDetail {\n  columnId: string|null;\n  columnIndex: number;\n  headerCell: HTMLElement;\n  sortValue: SortValue;\n}\n\n/**\n * Styles used to dynamically set dimensions of progress indicator based on\n * table header & body.\n */\nexport interface ProgressIndicatorStyles {\n  height: string;\n  top: string;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener, SpecificWindowEventListener, WindowEventType} from '@material/base/types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCDialogAdapter {\n  addClass(className: string): void;\n  removeClass(className: string): void;\n  hasClass(className: string): boolean;\n  addBodyClass(className: string): void;\n  removeBodyClass(className: string): void;\n  eventTargetMatches(target: EventTarget|null, selector: string): boolean;\n\n  isContentScrollable(): boolean;\n  areButtonsStacked(): boolean;\n  getActionFromEvent(evt: Event): string|null;\n\n  trapFocus(focusElement: HTMLElement|null): void;\n  releaseFocus(): void;\n  // Element to focus on after dialog has opened.\n  getInitialFocusEl(): HTMLElement|null;\n  clickDefaultButton(): void;\n  reverseButtons(): void;\n\n  notifyOpening(): void;\n  notifyOpened(): void;\n  notifyClosing(action: string): void;\n  notifyClosed(action: string): void;\n\n  /**\n   * Registers an event listener on the dialog's content element (indicated\n   * with the 'mdc-dialog__content' class).\n   */\n  registerContentEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the dialog's content element.\n   */\n  deregisterContentEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * @return true if the content has been scrolled (that is, for\n   *     scrollable content, if it is at the \"top\"). This is used in full-screen\n   *     dialogs, where the scroll divider is expected only to appear once the\n   *     content has been scrolled \"underneath\" the header bar.\n   */\n  isScrollableContentAtTop(): boolean;\n\n  /**\n   * @return true if the content has been scrolled all\n   *     the way to the bottom. This is used in full-screen dialogs, where the\n   *     footer scroll divider is expected only to appear when the content is\n   *     \"cut-off\" by the footer bar.\n   */\n  isScrollableContentAtBottom(): boolean;\n\n  /**\n   * Registers an event listener to the window.\n   */\n  registerWindowEventHandler<K extends WindowEventType>(\n      evtType: K, handler: SpecificWindowEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener to the window.\n   */\n  deregisterWindowEventHandler<K extends WindowEventType>(\n      evtType: K, handler: SpecificWindowEventListener<K>): void;\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {FocusTrap} from '@material/dom/focus-trap';\nimport {closest, matches} from '@material/dom/ponyfill';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCDialogAdapter} from './adapter';\nimport {MDCDialogFoundation} from './foundation';\nimport {MDCDialogCloseEventDetail} from './types';\nimport * as util from './util';\nimport {MDCDialogFocusTrapFactory} from './util';\n\nconst {strings} = MDCDialogFoundation;\n\nexport class MDCDialog extends MDCComponent<MDCDialogFoundation> {\n  get isOpen() {\n    return this.foundation.isOpen();\n  }\n\n  get escapeKeyAction() {\n    return this.foundation.getEscapeKeyAction();\n  }\n\n  set escapeKeyAction(action) {\n    this.foundation.setEscapeKeyAction(action);\n  }\n\n  get scrimClickAction() {\n    return this.foundation.getScrimClickAction();\n  }\n\n  set scrimClickAction(action) {\n    this.foundation.setScrimClickAction(action);\n  }\n\n  get autoStackButtons() {\n    return this.foundation.getAutoStackButtons();\n  }\n\n  set autoStackButtons(autoStack) {\n    this.foundation.setAutoStackButtons(autoStack);\n  }\n\n  static attachTo(root: Element) {\n    return new MDCDialog(root);\n  }\n\n  private buttonRipples!: MDCRipple[];       // assigned in initialize()\n  private buttons!: HTMLButtonElement[];     // assigned in initialize()\n  private container!: HTMLElement;           // assigned in initialize()\n  private content!: HTMLElement|null;        // assigned in initialize()\n  private defaultButton!: HTMLButtonElement|null;  // assigned in initialize()\n\n  private focusTrap!: FocusTrap;  // assigned in initialSyncWithDOM()\n  private focusTrapFactory!:\n      MDCDialogFocusTrapFactory;  // assigned in initialize()\n\n  private handleClick!:\n      SpecificEventListener<'click'>;  // assigned in initialSyncWithDOM()\n  private handleKeydown!:\n      SpecificEventListener<'keydown'>;  // assigned in initialSyncWithDOM()\n  private handleDocumentKeydown!:\n      SpecificEventListener<'keydown'>;   // assigned in initialSyncWithDOM()\n  private handleOpening!: EventListener;  // assigned in initialSyncWithDOM()\n  private handleClosing!: () => void;     // assigned in initialSyncWithDOM()\n\n  initialize(\n      focusTrapFactory: MDCDialogFocusTrapFactory = (el, focusOptions) => new FocusTrap(el, focusOptions),\n  ) {\n    const container =\n        this.root.querySelector<HTMLElement>(strings.CONTAINER_SELECTOR);\n    if (!container) {\n      throw new Error(`Dialog component requires a ${strings.CONTAINER_SELECTOR} container element`);\n    }\n    this.container = container;\n    this.content =\n        this.root.querySelector<HTMLElement>(strings.CONTENT_SELECTOR);\n    this.buttons = [].slice.call(\n        this.root.querySelectorAll<HTMLButtonElement>(strings.BUTTON_SELECTOR));\n    this.defaultButton = this.root.querySelector<HTMLButtonElement>(\n        `[${strings.BUTTON_DEFAULT_ATTRIBUTE}]`);\n    this.focusTrapFactory = focusTrapFactory;\n    this.buttonRipples = [];\n\n    for (const buttonEl of this.buttons) {\n      this.buttonRipples.push(new MDCRipple(buttonEl));\n    }\n  }\n\n  initialSyncWithDOM() {\n    this.focusTrap = util.createFocusTrapInstance(\n        this.container, this.focusTrapFactory,\n        this.getInitialFocusEl() || undefined);\n\n    this.handleClick = this.foundation.handleClick.bind(this.foundation);\n    this.handleKeydown = this.foundation.handleKeydown.bind(this.foundation);\n    this.handleDocumentKeydown =\n        this.foundation.handleDocumentKeydown.bind(this.foundation);\n    // this.handleLayout = this.layout.bind(this);\n\n    this.handleOpening = () => {\n      document.addEventListener('keydown', this.handleDocumentKeydown);\n    };\n    this.handleClosing = () => {\n      document.removeEventListener('keydown', this.handleDocumentKeydown);\n    };\n\n    this.listen('click', this.handleClick);\n    this.listen('keydown', this.handleKeydown);\n    this.listen(strings.OPENING_EVENT, this.handleOpening);\n    this.listen(strings.CLOSING_EVENT, this.handleClosing);\n  }\n\n  destroy() {\n    this.unlisten('click', this.handleClick);\n    this.unlisten('keydown', this.handleKeydown);\n    this.unlisten(strings.OPENING_EVENT, this.handleOpening);\n    this.unlisten(strings.CLOSING_EVENT, this.handleClosing);\n    this.handleClosing();\n\n    this.buttonRipples.forEach((ripple) => {\n      ripple.destroy();\n    });\n    super.destroy();\n  }\n\n  layout() {\n    this.foundation.layout();\n  }\n\n  open() {\n    this.foundation.open();\n  }\n\n  close(action = '') {\n    this.foundation.close(action);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCDialogAdapter = {\n      addBodyClass: (className) => document.body.classList.add(className),\n      addClass: (className) => this.root.classList.add(className),\n      areButtonsStacked: () => util.areTopsMisaligned(this.buttons),\n      clickDefaultButton: () => {\n        if (this.defaultButton && !this.defaultButton.disabled) {\n          this.defaultButton.click();\n        }\n      },\n      eventTargetMatches: (target, selector) =>\n          target ? matches(target as Element, selector) : false,\n      getActionFromEvent: (evt: Event) => {\n        if (!evt.target) {\n          return '';\n        }\n        const element = closest(evt.target as Element, `[${strings.ACTION_ATTRIBUTE}]`);\n        return element && element.getAttribute(strings.ACTION_ATTRIBUTE);\n      },\n      getInitialFocusEl: () => this.getInitialFocusEl(),\n      hasClass: (className) => this.root.classList.contains(className),\n      isContentScrollable: () => util.isScrollable(this.content),\n      notifyClosed: (action) => this.emit<MDCDialogCloseEventDetail>(\n          strings.CLOSED_EVENT, action ? {action} : {}),\n      notifyClosing: (action) => this.emit<MDCDialogCloseEventDetail>(\n          strings.CLOSING_EVENT, action ? {action} : {}),\n      notifyOpened: () => this.emit(strings.OPENED_EVENT, {}),\n      notifyOpening: () => this.emit(strings.OPENING_EVENT, {}),\n      releaseFocus: () => {\n        this.focusTrap.releaseFocus();\n      },\n      removeBodyClass: (className) => document.body.classList.remove(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      reverseButtons: () => {\n        this.buttons.reverse();\n        this.buttons.forEach((button) => {\n          button.parentElement!.appendChild(button);\n        });\n      },\n      trapFocus: () => {\n        this.focusTrap.trapFocus();\n      },\n      registerContentEventHandler: (evt, handler) => {\n        if (this.content instanceof HTMLElement) {\n          this.content.addEventListener(evt, handler);\n        }\n      },\n      deregisterContentEventHandler: (evt, handler) => {\n        if (this.content instanceof HTMLElement) {\n          this.content.removeEventListener(evt, handler);\n        }\n      },\n      isScrollableContentAtTop: () => {\n        return util.isScrollAtTop(this.content);\n      },\n      isScrollableContentAtBottom: () => {\n        return util.isScrollAtBottom(this.content);\n      },\n      registerWindowEventHandler: (evt, handler) => {\n        window.addEventListener(evt, handler);\n      },\n      deregisterWindowEventHandler: (evt, handler) => {\n        window.removeEventListener(evt, handler);\n      },\n    };\n    return new MDCDialogFoundation(adapter);\n  }\n\n  private getInitialFocusEl(): HTMLElement|null {\n    return this.root.querySelector(`[${strings.INITIAL_FOCUS_ATTRIBUTE}]`);\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const cssClasses = {\n  CLOSING: 'mdc-dialog--closing',\n  OPEN: 'mdc-dialog--open',\n  OPENING: 'mdc-dialog--opening',\n  SCROLLABLE: 'mdc-dialog--scrollable',\n  SCROLL_LOCK: 'mdc-dialog-scroll-lock',\n  STACKED: 'mdc-dialog--stacked',\n  FULLSCREEN: 'mdc-dialog--fullscreen',\n  // Class for showing a scroll divider on full-screen dialog header element.\n  // Should only be displayed on scrollable content, when the dialog content is\n  // scrolled \"underneath\" the header.\n  SCROLL_DIVIDER_HEADER: 'mdc-dialog-scroll-divider-header',\n  // Class for showing a scroll divider on a full-screen dialog footer element.\n  // Should only be displayed on scrolalble content, when the dialog content is\n  // obscured \"underneath\" the footer.\n  SCROLL_DIVIDER_FOOTER: 'mdc-dialog-scroll-divider-footer',\n  // The \"surface scrim\" is a scrim covering only the surface of a dialog. This\n  // is used in situations where a confirmation dialog is shown over an already\n  // opened full-screen dialog. On larger screen-sizes, the full-screen dialog\n  // is sized as a modal and so in these situations we display a \"surface scrim\"\n  // to prevent a \"double scrim\" (where the scrim from the secondary\n  // confirmation dialog would overlap with the scrim from the full-screen\n  // dialog).\n  SURFACE_SCRIM_SHOWN: 'mdc-dialog__surface-scrim--shown',\n  // \"Showing\" animating class for the surface-scrim.\n  SURFACE_SCRIM_SHOWING: 'mdc-dialog__surface-scrim--showing',\n  // \"Hiding\" animating class for the surface-scrim.\n  SURFACE_SCRIM_HIDING: 'mdc-dialog__surface-scrim--hiding',\n  // Class to hide a dialog's scrim (used in conjunction with a surface-scrim).\n  // Note that we only hide the original scrim rather than removing it entirely\n  // to prevent interactions with the content behind this scrim, and to capture\n  // scrim clicks.\n  SCRIM_HIDDEN: 'mdc-dialog__scrim--hidden',\n};\n\nexport const strings = {\n  ACTION_ATTRIBUTE: 'data-mdc-dialog-action',\n  BUTTON_DEFAULT_ATTRIBUTE: 'data-mdc-dialog-button-default',\n  BUTTON_SELECTOR: '.mdc-dialog__button',\n  CLOSED_EVENT: 'MDCDialog:closed',\n  CLOSE_ACTION: 'close',\n  CLOSING_EVENT: 'MDCDialog:closing',\n  CONTAINER_SELECTOR: '.mdc-dialog__container',\n  CONTENT_SELECTOR: '.mdc-dialog__content',\n  DESTROY_ACTION: 'destroy',\n  INITIAL_FOCUS_ATTRIBUTE: 'data-mdc-dialog-initial-focus',\n  OPENED_EVENT: 'MDCDialog:opened',\n  OPENING_EVENT: 'MDCDialog:opening',\n  SCRIM_SELECTOR: '.mdc-dialog__scrim',\n  SUPPRESS_DEFAULT_PRESS_SELECTOR: [\n    'textarea',\n    '.mdc-menu .mdc-list-item',\n    '.mdc-menu .mdc-deprecated-list-item',\n  ].join(', '),\n  SURFACE_SELECTOR: '.mdc-dialog__surface',\n};\n\nexport const numbers = {\n  DIALOG_ANIMATION_CLOSE_TIME_MS: 75,\n  DIALOG_ANIMATION_OPEN_TIME_MS: 150,\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {AnimationFrame} from '@material/animation/animationframe';\nimport {MDCFoundation} from '@material/base/foundation';\nimport {SpecificEventListener, SpecificWindowEventListener} from '@material/base/types';\n\nimport {MDCDialogAdapter} from './adapter';\nimport {cssClasses, numbers, strings} from './constants';\nimport {DialogConfigOptions} from './types';\n\nenum AnimationKeys {\n  POLL_SCROLL_POS = 'poll_scroll_position',\n  POLL_LAYOUT_CHANGE = 'poll_layout_change'\n}\n\nexport class MDCDialogFoundation extends MDCFoundation<MDCDialogAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get defaultAdapter(): MDCDialogAdapter {\n    return {\n      addBodyClass: () => undefined,\n      addClass: () => undefined,\n      areButtonsStacked: () => false,\n      clickDefaultButton: () => undefined,\n      eventTargetMatches: () => false,\n      getActionFromEvent: () => '',\n      getInitialFocusEl: () => null,\n      hasClass: () => false,\n      isContentScrollable: () => false,\n      notifyClosed: () => undefined,\n      notifyClosing: () => undefined,\n      notifyOpened: () => undefined,\n      notifyOpening: () => undefined,\n      releaseFocus: () => undefined,\n      removeBodyClass: () => undefined,\n      removeClass: () => undefined,\n      reverseButtons: () => undefined,\n      trapFocus: () => undefined,\n      registerContentEventHandler: () => undefined,\n      deregisterContentEventHandler: () => undefined,\n      isScrollableContentAtTop: () => false,\n      isScrollableContentAtBottom: () => false,\n      registerWindowEventHandler: () => undefined,\n      deregisterWindowEventHandler: () => undefined,\n    };\n  }\n\n  private dialogOpen = false;\n  private isFullscreen = false;\n  private animationFrame = 0;\n  private animationTimer = 0;\n  private escapeKeyAction = strings.CLOSE_ACTION;\n  private scrimClickAction = strings.CLOSE_ACTION;\n  private autoStackButtons = true;\n  private areButtonsStacked = false;\n  private suppressDefaultPressSelector =\n      strings.SUPPRESS_DEFAULT_PRESS_SELECTOR;\n  private readonly contentScrollHandler: SpecificEventListener<'scroll'>;\n  private readonly animFrame: AnimationFrame;\n  private readonly windowResizeHandler: SpecificWindowEventListener<'resize'>;\n  private readonly windowOrientationChangeHandler:\n      SpecificWindowEventListener<'orientationchange'>;\n\n  constructor(adapter?: Partial<MDCDialogAdapter>) {\n    super({...MDCDialogFoundation.defaultAdapter, ...adapter});\n\n    this.animFrame = new AnimationFrame();\n    this.contentScrollHandler = () => {\n      this.handleScrollEvent();\n    };\n\n    this.windowResizeHandler = () => {\n      this.layout();\n    };\n\n    this.windowOrientationChangeHandler = () => {\n      this.layout();\n    };\n  }\n\n  init() {\n    if (this.adapter.hasClass(cssClasses.STACKED)) {\n      this.setAutoStackButtons(false);\n    }\n    this.isFullscreen = this.adapter.hasClass(cssClasses.FULLSCREEN);\n  }\n\n  destroy() {\n    if (this.animationTimer) {\n      clearTimeout(this.animationTimer);\n      this.handleAnimationTimerEnd();\n    }\n\n    if (this.isFullscreen) {\n      this.adapter.deregisterContentEventHandler(\n          'scroll', this.contentScrollHandler);\n    }\n\n    this.animFrame.cancelAll();\n    this.adapter.deregisterWindowEventHandler(\n        'resize', this.windowResizeHandler);\n    this.adapter.deregisterWindowEventHandler(\n        'orientationchange', this.windowOrientationChangeHandler);\n  }\n\n  open(dialogOptions?: DialogConfigOptions) {\n    this.dialogOpen = true;\n    this.adapter.notifyOpening();\n    this.adapter.addClass(cssClasses.OPENING);\n    if (this.isFullscreen) {\n      // A scroll event listener is registered even if the dialog is not\n      // scrollable on open, since the window resize event, or orientation\n      // change may make the dialog scrollable after it is opened.\n      this.adapter.registerContentEventHandler(\n          'scroll', this.contentScrollHandler);\n    }\n    if (dialogOptions && dialogOptions.isAboveFullscreenDialog) {\n      this.adapter.addClass(cssClasses.SCRIM_HIDDEN);\n    }\n\n    this.adapter.registerWindowEventHandler('resize', this.windowResizeHandler);\n    this.adapter.registerWindowEventHandler(\n        'orientationchange', this.windowOrientationChangeHandler);\n\n    // Wait a frame once display is no longer \"none\", to establish basis for\n    // animation\n    this.runNextAnimationFrame(() => {\n      this.adapter.addClass(cssClasses.OPEN);\n      this.adapter.addBodyClass(cssClasses.SCROLL_LOCK);\n\n      this.layout();\n\n      this.animationTimer = setTimeout(() => {\n        this.handleAnimationTimerEnd();\n        this.adapter.trapFocus(this.adapter.getInitialFocusEl());\n        this.adapter.notifyOpened();\n      }, numbers.DIALOG_ANIMATION_OPEN_TIME_MS);\n    });\n  }\n\n  close(action = '') {\n    if (!this.dialogOpen) {\n      // Avoid redundant close calls (and events), e.g. from keydown on elements\n      // that inherently emit click\n      return;\n    }\n\n    this.dialogOpen = false;\n    this.adapter.notifyClosing(action);\n    this.adapter.addClass(cssClasses.CLOSING);\n    this.adapter.removeClass(cssClasses.OPEN);\n    this.adapter.removeBodyClass(cssClasses.SCROLL_LOCK);\n    if (this.isFullscreen) {\n      this.adapter.deregisterContentEventHandler(\n          'scroll', this.contentScrollHandler);\n    }\n    this.adapter.deregisterWindowEventHandler(\n        'resize', this.windowResizeHandler);\n    this.adapter.deregisterWindowEventHandler(\n        'orientationchange', this.windowOrientationChangeHandler);\n\n    cancelAnimationFrame(this.animationFrame);\n    this.animationFrame = 0;\n\n    clearTimeout(this.animationTimer);\n    this.animationTimer = setTimeout(() => {\n      this.adapter.releaseFocus();\n      this.handleAnimationTimerEnd();\n      this.adapter.notifyClosed(action);\n    }, numbers.DIALOG_ANIMATION_CLOSE_TIME_MS);\n  }\n\n  /**\n   * Used only in instances of showing a secondary dialog over a full-screen\n   * dialog. Shows the \"surface scrim\" displayed over the full-screen dialog.\n   */\n  showSurfaceScrim() {\n    this.adapter.addClass(cssClasses.SURFACE_SCRIM_SHOWING);\n    this.runNextAnimationFrame(() => {\n      this.adapter.addClass(cssClasses.SURFACE_SCRIM_SHOWN);\n    });\n  }\n\n  /**\n   * Used only in instances of showing a secondary dialog over a full-screen\n   * dialog. Hides the \"surface scrim\" displayed over the full-screen dialog.\n   */\n  hideSurfaceScrim() {\n    this.adapter.removeClass(cssClasses.SURFACE_SCRIM_SHOWN);\n    this.adapter.addClass(cssClasses.SURFACE_SCRIM_HIDING);\n  }\n\n  /**\n   * Handles `transitionend` event triggered when surface scrim animation is\n   * finished.\n   */\n  handleSurfaceScrimTransitionEnd() {\n    this.adapter.removeClass(cssClasses.SURFACE_SCRIM_HIDING);\n    this.adapter.removeClass(cssClasses.SURFACE_SCRIM_SHOWING);\n  }\n\n  isOpen() {\n    return this.dialogOpen;\n  }\n\n  getEscapeKeyAction(): string {\n    return this.escapeKeyAction;\n  }\n\n  setEscapeKeyAction(action: string) {\n    this.escapeKeyAction = action;\n  }\n\n  getScrimClickAction(): string {\n    return this.scrimClickAction;\n  }\n\n  setScrimClickAction(action: string) {\n    this.scrimClickAction = action;\n  }\n\n  getAutoStackButtons(): boolean {\n    return this.autoStackButtons;\n  }\n\n  setAutoStackButtons(autoStack: boolean) {\n    this.autoStackButtons = autoStack;\n  }\n\n  getSuppressDefaultPressSelector(): string {\n    return this.suppressDefaultPressSelector;\n  }\n\n  setSuppressDefaultPressSelector(selector: string) {\n    this.suppressDefaultPressSelector = selector;\n  }\n\n  layout() {\n    this.animFrame.request(AnimationKeys.POLL_LAYOUT_CHANGE, () => {\n      this.layoutInternal();\n    });\n  }\n\n  /** Handles click on the dialog root element. */\n  handleClick(evt: MouseEvent) {\n    const isScrim =\n        this.adapter.eventTargetMatches(evt.target, strings.SCRIM_SELECTOR);\n    // Check for scrim click first since it doesn't require querying ancestors.\n    if (isScrim && this.scrimClickAction !== '') {\n      this.close(this.scrimClickAction);\n    } else {\n      const action = this.adapter.getActionFromEvent(evt);\n      if (action) {\n        this.close(action);\n      }\n    }\n  }\n\n  /** Handles keydown on the dialog root element. */\n  handleKeydown(evt: KeyboardEvent) {\n    const isEnter = evt.key === 'Enter' || evt.keyCode === 13;\n    if (!isEnter) {\n      return;\n    }\n    const action = this.adapter.getActionFromEvent(evt);\n    if (action) {\n      // Action button callback is handled in `handleClick`,\n      // since space/enter keydowns on buttons trigger click events.\n      return;\n    }\n\n    // `composedPath` is used here, when available, to account for use cases\n    // where a target meant to suppress the default press behaviour\n    // may exist in a shadow root.\n    // For example, a textarea inside a web component:\n    // <mwc-dialog>\n    //   <horizontal-layout>\n    //     #shadow-root (open)\n    //       <mwc-textarea>\n    //         #shadow-root (open)\n    //           <textarea></textarea>\n    //       </mwc-textarea>\n    //   </horizontal-layout>\n    // </mwc-dialog>\n    const target = evt.composedPath ? evt.composedPath()[0] : evt.target;\n    const isDefault = this.suppressDefaultPressSelector ?\n        !this.adapter.eventTargetMatches(\n            target, this.suppressDefaultPressSelector) :\n        true;\n    if (isEnter && isDefault) {\n      this.adapter.clickDefaultButton();\n    }\n  }\n\n  /** Handles keydown on the document. */\n  handleDocumentKeydown(evt: KeyboardEvent) {\n    const isEscape = evt.key === 'Escape' || evt.keyCode === 27;\n    if (isEscape && this.escapeKeyAction !== '') {\n      this.close(this.escapeKeyAction);\n    }\n  }\n\n  /**\n   * Handles scroll event on the dialog's content element -- showing a scroll\n   * divider on the header or footer based on the scroll position. This handler\n   * should only be registered on full-screen dialogs with scrollable content.\n   */\n  private handleScrollEvent() {\n    // Since scroll events can fire at a high rate, we throttle these events by\n    // using requestAnimationFrame.\n    this.animFrame.request(AnimationKeys.POLL_SCROLL_POS, () => {\n      this.toggleScrollDividerHeader();\n      this.toggleScrollDividerFooter();\n    });\n  }\n\n  private layoutInternal() {\n    if (this.autoStackButtons) {\n      this.detectStackedButtons();\n    }\n    this.toggleScrollableClasses();\n  }\n\n  private handleAnimationTimerEnd() {\n    this.animationTimer = 0;\n    this.adapter.removeClass(cssClasses.OPENING);\n    this.adapter.removeClass(cssClasses.CLOSING);\n  }\n\n  /**\n   * Runs the given logic on the next animation frame, using setTimeout to\n   * factor in Firefox reflow behavior.\n   */\n  private runNextAnimationFrame(callback: () => void) {\n    cancelAnimationFrame(this.animationFrame);\n    this.animationFrame = requestAnimationFrame(() => {\n      this.animationFrame = 0;\n      clearTimeout(this.animationTimer);\n      this.animationTimer = setTimeout(callback, 0);\n    });\n  }\n\n  private detectStackedButtons() {\n    // Remove the class first to let us measure the buttons' natural positions.\n    this.adapter.removeClass(cssClasses.STACKED);\n\n    const areButtonsStacked = this.adapter.areButtonsStacked();\n\n    if (areButtonsStacked) {\n      this.adapter.addClass(cssClasses.STACKED);\n    }\n\n    if (areButtonsStacked !== this.areButtonsStacked) {\n      this.adapter.reverseButtons();\n      this.areButtonsStacked = areButtonsStacked;\n    }\n  }\n\n  private toggleScrollableClasses() {\n    // Remove the class first to let us measure the natural height of the\n    // content.\n    this.adapter.removeClass(cssClasses.SCROLLABLE);\n    if (this.adapter.isContentScrollable()) {\n      this.adapter.addClass(cssClasses.SCROLLABLE);\n\n      if (this.isFullscreen) {\n        // If dialog is full-screen and scrollable, check if a scroll divider\n        // should be shown.\n        this.toggleScrollDividerHeader();\n        this.toggleScrollDividerFooter();\n      }\n    }\n  }\n\n  private toggleScrollDividerHeader() {\n    if (!this.adapter.isScrollableContentAtTop()) {\n      this.adapter.addClass(cssClasses.SCROLL_DIVIDER_HEADER);\n    } else if (this.adapter.hasClass(cssClasses.SCROLL_DIVIDER_HEADER)) {\n      this.adapter.removeClass(cssClasses.SCROLL_DIVIDER_HEADER);\n    }\n  }\n\n  private toggleScrollDividerFooter() {\n    if (!this.adapter.isScrollableContentAtBottom()) {\n      this.adapter.addClass(cssClasses.SCROLL_DIVIDER_FOOTER);\n    } else if (this.adapter.hasClass(cssClasses.SCROLL_DIVIDER_FOOTER)) {\n      this.adapter.removeClass(cssClasses.SCROLL_DIVIDER_FOOTER);\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCDialogFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport * as util from './util';\n\nexport {util};\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport interface MDCDialogCloseEventDetail {\n  action?: string;\n}\n\n// Note: CustomEvent<T> is not supported by Closure Compiler.\n\nexport interface MDCDialogCloseEvent extends Event {\n  readonly detail: MDCDialogCloseEventDetail;\n}\n\n\n/**\n * Options for how to configure the dialog.\n */\nexport interface DialogConfigOptions {\n  // Boolean indicating whether or not the dialog being opened is a confirmation\n  // dialog opened on top of a full-screen dialog (the only time multiple\n  // dialogs should be open on top of one another).\n  isAboveFullscreenDialog?: boolean;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FocusOptions, FocusTrap} from '@material/dom/focus-trap';\n\nexport type MDCDialogFocusTrapFactory = (\n    element: HTMLElement,\n    options: FocusOptions,\n) => FocusTrap;\n\nexport function createFocusTrapInstance(\n    surfaceEl: HTMLElement,\n    focusTrapFactory: MDCDialogFocusTrapFactory,\n    initialFocusEl?: HTMLElement,\n): FocusTrap {\n  return focusTrapFactory(surfaceEl, {initialFocusEl});\n}\n\nexport function isScrollable(el: HTMLElement | null): boolean {\n  return el ? el.scrollHeight > el.offsetHeight : false;\n}\n\n/**\n * For scrollable content, returns true if the content has not been scrolled\n * (that is, the scroll content is as the \"top\"). This is used in full-screen\n * dialogs, where the scroll divider is expected only to appear once the\n * content has been scrolled \"underneath\" the header bar.\n */\nexport function isScrollAtTop(el: HTMLElement|null) {\n  return el ? el.scrollTop === 0 : false;\n}\n\n/**\n * For scrollable content, returns true if the content has been scrolled all the\n * way to the bottom. This is used in full-screen dialogs, where the footer\n * scroll divider is expected only to appear when the content is \"cut-off\" by\n * the footer bar.\n */\nexport function isScrollAtBottom(el: HTMLElement|null) {\n  return el ? Math.ceil(el.scrollHeight - el.scrollTop) === el.clientHeight :\n              false;\n}\n\nexport function areTopsMisaligned(els: HTMLElement[]): boolean {\n  const tops = new Set();\n  [].forEach.call(els, (el: HTMLElement) => tops.add(el.offsetTop));\n  return tops.size > 1;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Priorities for the announce function\n */\nexport enum AnnouncerPriority {\n  POLITE = 'polite',\n  ASSERTIVE = 'assertive',\n}\n\n/**\n * Data attribute added to live region element.\n */\nexport const DATA_MDC_DOM_ANNOUNCE = 'data-mdc-dom-announce';\n\n/**\n * Announces the given message with optional priority, defaulting to \"polite\"\n */\nexport function announce(message: string, priority?: AnnouncerPriority) {\n  Announcer.getInstance().say(message, priority);\n}\n\nclass Announcer {\n  private static instance: Announcer;\n  private readonly liveRegions: Map<AnnouncerPriority, Element>;\n\n  static getInstance(): Announcer {\n    if (!Announcer.instance) {\n      Announcer.instance = new Announcer();\n    }\n\n    return Announcer.instance;\n  }\n\n  // Constructor made private to ensure only the singleton is used\n  private constructor() {\n    this.liveRegions = new Map();\n  }\n\n  say(message: string, priority: AnnouncerPriority = AnnouncerPriority.POLITE) {\n    const liveRegion = this.getLiveRegion(priority);\n    // Reset the region to pick up the message, even if the message is the\n    // exact same as before.\n    liveRegion.textContent = '';\n    // Timeout is necessary for screen readers like NVDA and VoiceOver.\n    setTimeout(() => {\n      liveRegion.textContent = message;\n      document.addEventListener('click', clearLiveRegion);\n    }, 1);\n\n    function clearLiveRegion() {\n      liveRegion.textContent = '';\n      document.removeEventListener('click', clearLiveRegion);\n    }\n  }\n\n  private getLiveRegion(priority: AnnouncerPriority): Element {\n    const existingLiveRegion = this.liveRegions.get(priority);\n    if (existingLiveRegion &&\n        document.body.contains(existingLiveRegion as Node)) {\n      return existingLiveRegion;\n    }\n\n    const liveRegion = this.createLiveRegion(priority);\n    this.liveRegions.set(priority, liveRegion);\n    return liveRegion;\n  }\n\n  private createLiveRegion(priority: AnnouncerPriority): Element {\n    const el = document.createElement('div');\n    el.style.position = 'absolute';\n    el.style.top = '-9999px';\n    el.style.left = '-9999px';\n    el.style.height = '1px';\n    el.style.overflow = 'hidden';\n    el.setAttribute('aria-atomic', 'true');\n    el.setAttribute('aria-live', priority);\n    el.setAttribute(DATA_MDC_DOM_ANNOUNCE, 'true');\n    document.body.appendChild(el);\n    return el;\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Determine whether the current browser supports passive event listeners, and\n * if so, use them.\n */\nexport function applyPassive(globalObj: Window = window):\n    boolean | EventListenerOptions {\n  return supportsPassiveOption(globalObj) ?\n      {passive: true} as AddEventListenerOptions :\n      false;\n}\n\nfunction supportsPassiveOption(globalObj: Window = window): boolean {\n  // See\n  // https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener\n  let passiveSupported = false;\n\n  try {\n    const options = {\n      // This function will be called when the browser\n      // attempts to access the passive property.\n      get passive() {\n        passiveSupported = true;\n        return false;\n      }\n    };\n\n    const handler = () => {};\n    globalObj.document.addEventListener('test', handler, options);\n    globalObj.document.removeEventListener(\n        'test', handler, options as EventListenerOptions);\n  } catch (err) {\n    passiveSupported = false;\n  }\n\n  return passiveSupported;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst FOCUS_SENTINEL_CLASS = 'mdc-dom-focus-sentinel';\n\n/**\n * Utility to trap focus in a given root element, e.g. for modal components such\n * as dialogs. The root should have at least one focusable child element,\n * for setting initial focus when trapping focus.\n * Also tracks the previously focused element, and restores focus to that\n * element when releasing focus.\n */\nexport class FocusTrap {\n  // Previously focused element before trapping focus.\n  private elFocusedBeforeTrapFocus: HTMLElement|null = null;\n\n  constructor(\n      private readonly root: HTMLElement,\n      private readonly options: FocusOptions = {}) {}\n\n  /**\n   * Traps focus in `root`. Also focuses on either `initialFocusEl` if set;\n   * otherwises sets initial focus to the first focusable child element.\n   */\n  trapFocus() {\n    const focusableEls = this.getFocusableElements(this.root);\n    if (focusableEls.length === 0) {\n      throw new Error(\n          'FocusTrap: Element must have at least one focusable child.');\n    }\n\n    this.elFocusedBeforeTrapFocus =\n        document.activeElement instanceof HTMLElement ? document.activeElement :\n                                                        null;\n    this.wrapTabFocus(this.root);\n\n    if (!this.options.skipInitialFocus) {\n      this.focusInitialElement(focusableEls, this.options.initialFocusEl);\n    }\n  }\n\n  /**\n   * Releases focus from `root`. Also restores focus to the previously focused\n   * element.\n   */\n  releaseFocus() {\n    [].slice.call(this.root.querySelectorAll(`.${FOCUS_SENTINEL_CLASS}`))\n        .forEach((sentinelEl: HTMLElement) => {\n          sentinelEl.parentElement!.removeChild(sentinelEl);\n        });\n\n    if (!this.options.skipRestoreFocus && this.elFocusedBeforeTrapFocus) {\n      this.elFocusedBeforeTrapFocus.focus();\n    }\n  }\n\n  /**\n   * Wraps tab focus within `el` by adding two hidden sentinel divs which are\n   * used to mark the beginning and the end of the tabbable region. When\n   * focused, these sentinel elements redirect focus to the first/last\n   * children elements of the tabbable region, ensuring that focus is trapped\n   * within that region.\n   */\n  private wrapTabFocus(el: HTMLElement) {\n    const sentinelStart = this.createSentinel();\n    const sentinelEnd = this.createSentinel();\n\n    sentinelStart.addEventListener('focus', () => {\n      const focusableEls = this.getFocusableElements(el);\n      if (focusableEls.length > 0) {\n        focusableEls[focusableEls.length - 1].focus();\n      }\n    });\n    sentinelEnd.addEventListener('focus', () => {\n      const focusableEls = this.getFocusableElements(el);\n      if (focusableEls.length > 0) {\n        focusableEls[0].focus();\n      }\n    });\n\n    el.insertBefore(sentinelStart, el.children[0]);\n    el.appendChild(sentinelEnd);\n  }\n\n  /**\n   * Focuses on `initialFocusEl` if defined and a child of the root element.\n   * Otherwise, focuses on the first focusable child element of the root.\n   */\n  private focusInitialElement(\n      focusableEls: HTMLElement[], initialFocusEl?: HTMLElement) {\n    let focusIndex = 0;\n    if (initialFocusEl) {\n      focusIndex = Math.max(focusableEls.indexOf(initialFocusEl), 0);\n    }\n    focusableEls[focusIndex].focus();\n  }\n\n  private getFocusableElements(root: HTMLElement): HTMLElement[] {\n    const focusableEls =\n        [].slice.call(root.querySelectorAll(\n            '[autofocus], [tabindex], a, input, textarea, select, button')) as\n        HTMLElement[];\n    return focusableEls.filter((el) => {\n      const isDisabledOrHidden = el.getAttribute('aria-disabled') === 'true' ||\n          el.getAttribute('disabled') != null ||\n          el.getAttribute('hidden') != null ||\n          el.getAttribute('aria-hidden') === 'true';\n      const isTabbableAndVisible = el.tabIndex >= 0 &&\n          el.getBoundingClientRect().width > 0 &&\n          !el.classList.contains(FOCUS_SENTINEL_CLASS) && !isDisabledOrHidden;\n\n      let isProgrammaticallyHidden = false;\n      if (isTabbableAndVisible) {\n        const style = getComputedStyle(el);\n        isProgrammaticallyHidden =\n            style.display === 'none' || style.visibility === 'hidden';\n      }\n      return isTabbableAndVisible && !isProgrammaticallyHidden;\n    });\n  }\n\n  private createSentinel() {\n    const sentinel = document.createElement('div');\n    sentinel.setAttribute('tabindex', '0');\n    // Don't announce in screen readers.\n    sentinel.setAttribute('aria-hidden', 'true');\n    sentinel.classList.add(FOCUS_SENTINEL_CLASS);\n    return sentinel;\n  }\n}\n\n/** Customization options. */\nexport interface FocusOptions {\n  // The element to focus initially when trapping focus.\n  //  Must be a child of the root element.\n  initialFocusEl?: HTMLElement;\n\n  // Whether to skip initially focusing on any element when trapping focus.\n  // By default, focus is set on the first focusable child element of the root.\n  // This is useful if the caller wants to handle setting initial focus.\n  skipInitialFocus?: boolean;\n\n  // Whether to restore focus on the previously focused element when releasing\n  // focus. This is useful if the caller wants to handle restoring focus.\n  skipRestoreFocus?: boolean;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport * as events from './events';\nimport * as focusTrap from './focus-trap';\nimport * as keyboard from './keyboard';\nimport * as ponyfill from './ponyfill';\n\nexport {events, focusTrap, keyboard, ponyfill};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * KEY provides normalized string values for keys.\n */\nexport const KEY = {\n  UNKNOWN: 'Unknown',\n  BACKSPACE: 'Backspace',\n  ENTER: 'Enter',\n  SPACEBAR: 'Spacebar',\n  PAGE_UP: 'PageUp',\n  PAGE_DOWN: 'PageDown',\n  END: 'End',\n  HOME: 'Home',\n  ARROW_LEFT: 'ArrowLeft',\n  ARROW_UP: 'ArrowUp',\n  ARROW_RIGHT: 'ArrowRight',\n  ARROW_DOWN: 'ArrowDown',\n  DELETE: 'Delete',\n  ESCAPE: 'Escape',\n  TAB: 'Tab',\n};\n\nconst normalizedKeys = new Set<string>();\n// IE11 has no support for new Map with iterable so we need to initialize this\n// by hand.\nnormalizedKeys.add(KEY.BACKSPACE);\nnormalizedKeys.add(KEY.ENTER);\nnormalizedKeys.add(KEY.SPACEBAR);\nnormalizedKeys.add(KEY.PAGE_UP);\nnormalizedKeys.add(KEY.PAGE_DOWN);\nnormalizedKeys.add(KEY.END);\nnormalizedKeys.add(KEY.HOME);\nnormalizedKeys.add(KEY.ARROW_LEFT);\nnormalizedKeys.add(KEY.ARROW_UP);\nnormalizedKeys.add(KEY.ARROW_RIGHT);\nnormalizedKeys.add(KEY.ARROW_DOWN);\nnormalizedKeys.add(KEY.DELETE);\nnormalizedKeys.add(KEY.ESCAPE);\nnormalizedKeys.add(KEY.TAB);\n\nconst KEY_CODE = {\n  BACKSPACE: 8,\n  ENTER: 13,\n  SPACEBAR: 32,\n  PAGE_UP: 33,\n  PAGE_DOWN: 34,\n  END: 35,\n  HOME: 36,\n  ARROW_LEFT: 37,\n  ARROW_UP: 38,\n  ARROW_RIGHT: 39,\n  ARROW_DOWN: 40,\n  DELETE: 46,\n  ESCAPE: 27,\n  TAB: 9,\n};\n\nconst mappedKeyCodes = new Map<number, string>();\n// IE11 has no support for new Map with iterable so we need to initialize this\n// by hand.\nmappedKeyCodes.set(KEY_CODE.BACKSPACE, KEY.BACKSPACE);\nmappedKeyCodes.set(KEY_CODE.ENTER, KEY.ENTER);\nmappedKeyCodes.set(KEY_CODE.SPACEBAR, KEY.SPACEBAR);\nmappedKeyCodes.set(KEY_CODE.PAGE_UP, KEY.PAGE_UP);\nmappedKeyCodes.set(KEY_CODE.PAGE_DOWN, KEY.PAGE_DOWN);\nmappedKeyCodes.set(KEY_CODE.END, KEY.END);\nmappedKeyCodes.set(KEY_CODE.HOME, KEY.HOME);\nmappedKeyCodes.set(KEY_CODE.ARROW_LEFT, KEY.ARROW_LEFT);\nmappedKeyCodes.set(KEY_CODE.ARROW_UP, KEY.ARROW_UP);\nmappedKeyCodes.set(KEY_CODE.ARROW_RIGHT, KEY.ARROW_RIGHT);\nmappedKeyCodes.set(KEY_CODE.ARROW_DOWN, KEY.ARROW_DOWN);\nmappedKeyCodes.set(KEY_CODE.DELETE, KEY.DELETE);\nmappedKeyCodes.set(KEY_CODE.ESCAPE, KEY.ESCAPE);\nmappedKeyCodes.set(KEY_CODE.TAB, KEY.TAB);\n\nconst navigationKeys = new Set<string>();\n// IE11 has no support for new Set with iterable so we need to initialize this\n// by hand.\nnavigationKeys.add(KEY.PAGE_UP);\nnavigationKeys.add(KEY.PAGE_DOWN);\nnavigationKeys.add(KEY.END);\nnavigationKeys.add(KEY.HOME);\nnavigationKeys.add(KEY.ARROW_LEFT);\nnavigationKeys.add(KEY.ARROW_UP);\nnavigationKeys.add(KEY.ARROW_RIGHT);\nnavigationKeys.add(KEY.ARROW_DOWN);\n\n/**\n * normalizeKey returns the normalized string for a navigational action.\n */\nexport function normalizeKey(evt: KeyboardEvent): string {\n  const {key} = evt;\n  // If the event already has a normalized key, return it\n  if (normalizedKeys.has(key)) {\n    return key;\n  }\n\n  // tslint:disable-next-line:deprecation\n  const mappedKey = mappedKeyCodes.get(evt.keyCode);\n  if (mappedKey) {\n    return mappedKey;\n  }\n  return KEY.UNKNOWN;\n}\n\n/**\n * isNavigationEvent returns whether the event is a navigation event\n */\nexport function isNavigationEvent(evt: KeyboardEvent): boolean {\n  return navigationKeys.has(normalizeKey(evt));\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * @fileoverview A \"ponyfill\" is a polyfill that doesn't modify the global prototype chain.\n * This makes ponyfills safer than traditional polyfills, especially for libraries like MDC.\n */\n\nexport function closest(element: Element, selector: string): Element | null {\n  if (element.closest) {\n    return element.closest(selector);\n  }\n\n  let el: Element | null = element;\n  while (el) {\n    if (matches(el, selector)) {\n      return el;\n    }\n    el = el.parentElement;\n  }\n  return null;\n}\n\nexport function matches(element: Element, selector: string): boolean {\n  const nativeMatches = element.matches\n      || element.webkitMatchesSelector\n      || (element as any).msMatchesSelector;\n  return nativeMatches.call(element, selector);\n}\n\n/**\n * Used to compute the estimated scroll width of elements. When an element is\n * hidden due to display: none; being applied to a parent element, the width is\n * returned as 0. However, the element will have a true width once no longer\n * inside a display: none context. This method computes an estimated width when\n * the element is hidden or returns the true width when the element is visble.\n * @param {Element} element the element whose width to estimate\n */\nexport function estimateScrollWidth(element: Element): number {\n  // Check the offsetParent. If the element inherits display: none from any\n  // parent, the offsetParent property will be null (see\n  // https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/offsetParent).\n  // This check ensures we only clone the node when necessary.\n  const htmlEl = element as HTMLElement;\n  if (htmlEl.offsetParent !== null) {\n    return htmlEl.scrollWidth;\n  }\n\n  const clone = htmlEl.cloneNode(true) as HTMLElement;\n  clone.style.setProperty('position', 'absolute');\n  clone.style.setProperty('transform', 'translate(-9999px, -9999px)');\n  document.documentElement.appendChild(clone);\n  const scrollWidth = clone.scrollWidth;\n  document.documentElement.removeChild(clone);\n  return scrollWidth;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCDrawerAdapter {\n  /**\n   * Adds a class to the root Element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the root Element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Returns true if the root Element contains the given class.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Returns true if the element contains the given class.\n   * @param element target element to verify class name\n   * @param className class name\n   */\n  elementHasClass(element: Element, className: string): boolean;\n\n  /**\n   * Saves the focus of currently active element.\n   */\n  saveFocus(): void;\n\n  /**\n   * Restores focus to element previously saved with 'saveFocus'.\n   */\n  restoreFocus(): void;\n\n  /**\n   * Focuses the active / selected navigation item.\n   */\n  focusActiveNavigationItem(): void;\n\n  /**\n   * Emits a custom event \"MDCDrawer:closed\" denoting the drawer has closed.\n   */\n  notifyClose(): void;\n\n  /**\n   * Emits a custom event \"MDCDrawer:opened\" denoting the drawer has opened.\n   */\n  notifyOpen(): void;\n\n  /**\n   * Traps focus on root element and focuses the active navigation element.\n   */\n  trapFocus(): void;\n\n  /**\n   * Releases focus trap from root element which was set by `trapFocus`\n   * and restores focus to where it was prior to calling `trapFocus`.\n   */\n  releaseFocus(): void;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {FocusTrap} from '@material/dom/focus-trap';\nimport {MDCList, MDCListFactory} from '@material/list/component';\nimport {MDCDrawerAdapter} from './adapter';\nimport {MDCDismissibleDrawerFoundation} from './dismissible/foundation';\nimport {MDCModalDrawerFoundation} from './modal/foundation';\nimport * as util from './util';\nimport {MDCDrawerFocusTrapFactory} from './util';\n\nconst {cssClasses, strings} = MDCDismissibleDrawerFoundation;\n\n/**\n * @events `MDCDrawer:closed {}` Emits when the navigation drawer has closed.\n * @events `MDCDrawer:opened {}` Emits when the navigation drawer has opened.\n */\nexport class MDCDrawer extends MDCComponent<MDCDismissibleDrawerFoundation> {\n  static attachTo(root: Element): MDCDrawer {\n    return new MDCDrawer(root);\n  }\n\n  /**\n   * @return boolean Proxies to the foundation's `open`/`close` methods.\n   * Also returns true if drawer is in the open position.\n   */\n  get open(): boolean {\n    return this.foundation.isOpen();\n  }\n\n  /**\n   * Toggles the drawer open and closed.\n   */\n  set open(isOpen: boolean) {\n    if (isOpen) {\n      this.foundation.open();\n    } else {\n      this.foundation.close();\n    }\n  }\n\n  private previousFocus?: Element|null;\n  private scrim!: HTMLElement|null;  // assigned in initialSyncWithDOM()\n  private innerList?: MDCList;       // assigned in initialize()\n\n  private focusTrap?: FocusTrap;  // assigned in initialSyncWithDOM()\n  private focusTrapFactory!:\n      MDCDrawerFocusTrapFactory;  // assigned in initialize()\n\n  private handleScrimClick?:\n      SpecificEventListener<'click'>;  // initialized in initialSyncWithDOM()\n  private handleKeydown!:\n      SpecificEventListener<'keydown'>;  // initialized in initialSyncWithDOM()\n  private handleTransitionEnd!:\n      SpecificEventListener<'transitionend'>;  // initialized in\n                                               // initialSyncWithDOM()\n\n  get list(): MDCList|undefined {\n    return this.innerList;\n  }\n\n  initialize(\n      focusTrapFactory: MDCDrawerFocusTrapFactory = (el) => new FocusTrap(el),\n      listFactory: MDCListFactory = (el) => new MDCList(el),\n  ) {\n    const listEl = this.root.querySelector(strings.LIST_SELECTOR);\n    if (listEl) {\n      this.innerList = listFactory(listEl);\n      this.innerList.wrapFocus = true;\n    }\n    this.focusTrapFactory = focusTrapFactory;\n  }\n\n  initialSyncWithDOM() {\n    const {MODAL} = cssClasses;\n    const {SCRIM_SELECTOR} = strings;\n\n    this.scrim = (this.root.parentNode as Element)\n                     .querySelector<HTMLElement>(SCRIM_SELECTOR);\n\n    if (this.scrim && this.root.classList.contains(MODAL)) {\n      this.handleScrimClick = () =>\n          (this.foundation as MDCModalDrawerFoundation).handleScrimClick();\n      this.scrim.addEventListener('click', this.handleScrimClick);\n      this.focusTrap = util.createFocusTrapInstance(\n          this.root as HTMLElement, this.focusTrapFactory);\n    }\n\n    this.handleKeydown = (evt) => {\n      this.foundation.handleKeydown(evt);\n    };\n    this.handleTransitionEnd = (evt) => {\n      this.foundation.handleTransitionEnd(evt);\n    };\n    this.listen('keydown', this.handleKeydown);\n    this.listen('transitionend', this.handleTransitionEnd);\n  }\n\n  destroy() {\n    this.unlisten('keydown', this.handleKeydown);\n    this.unlisten('transitionend', this.handleTransitionEnd);\n\n    if (this.innerList) {\n      this.innerList.destroy();\n    }\n\n    const {MODAL} = cssClasses;\n    if (this.scrim && this.handleScrimClick &&\n        this.root.classList.contains(MODAL)) {\n      this.scrim.removeEventListener('click', this.handleScrimClick);\n      // Ensure drawer is closed to hide scrim and release focus\n      this.open = false;\n    }\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take\n    // a Partial<MDCFooAdapter>. To ensure we don't accidentally omit any\n    // methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCDrawerAdapter = {\n      addClass: (className) => {\n        this.root.classList.add(className);\n      },\n      removeClass: (className) => {\n        this.root.classList.remove(className);\n      },\n      hasClass: (className) => this.root.classList.contains(className),\n      elementHasClass: (element, className) =>\n          element.classList.contains(className),\n      saveFocus: () => {\n        this.previousFocus = document.activeElement;\n      },\n      restoreFocus: () => {\n        const previousFocus = this.previousFocus as HTMLOrSVGElement | null;\n        if (previousFocus && previousFocus.focus &&\n            this.root.contains(document.activeElement)) {\n          previousFocus.focus();\n        }\n      },\n      focusActiveNavigationItem: () => {\n        const activeNavItemEl = this.root.querySelector<HTMLElement>(\n            strings.LIST_ITEM_ACTIVATED_SELECTOR);\n        if (activeNavItemEl) {\n          activeNavItemEl.focus();\n        }\n      },\n      notifyClose: () => {\n        this.emit(strings.CLOSE_EVENT, {}, true /* shouldBubble */);\n      },\n      notifyOpen: () => {\n        this.emit(strings.OPEN_EVENT, {}, true /* shouldBubble */);\n      },\n      trapFocus: () => {\n        this.focusTrap!.trapFocus();\n      },\n      releaseFocus: () => {\n        this.focusTrap!.releaseFocus();\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n\n    const {DISMISSIBLE, MODAL} = cssClasses;\n    if (this.root.classList.contains(DISMISSIBLE)) {\n      return new MDCDismissibleDrawerFoundation(adapter);\n    } else if (this.root.classList.contains(MODAL)) {\n      return new MDCModalDrawerFoundation(adapter);\n    } else {\n      throw new Error(\n          `MDCDrawer: Failed to instantiate component. Supported variants are ${\n              DISMISSIBLE} and ${MODAL}.`);\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  ANIMATE: 'mdc-drawer--animate',\n  CLOSING: 'mdc-drawer--closing',\n  DISMISSIBLE: 'mdc-drawer--dismissible',\n  MODAL: 'mdc-drawer--modal',\n  OPEN: 'mdc-drawer--open',\n  OPENING: 'mdc-drawer--opening',\n  ROOT: 'mdc-drawer',\n};\n\nconst strings = {\n  APP_CONTENT_SELECTOR: '.mdc-drawer-app-content',\n  CLOSE_EVENT: 'MDCDrawer:closed',\n  OPEN_EVENT: 'MDCDrawer:opened',\n  SCRIM_SELECTOR: '.mdc-drawer-scrim',\n  LIST_SELECTOR: '.mdc-list,.mdc-deprecated-list',\n  LIST_ITEM_ACTIVATED_SELECTOR:\n      '.mdc-list-item--activated,.mdc-deprecated-list-item--activated',\n};\n\nexport {cssClasses, strings};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCDrawerAdapter} from '../adapter';\nimport {cssClasses, strings} from '../constants';\n\nexport class MDCDismissibleDrawerFoundation extends MDCFoundation<MDCDrawerAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get defaultAdapter(): MDCDrawerAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => false,\n      elementHasClass: () => false,\n      notifyClose: () => undefined,\n      notifyOpen: () => undefined,\n      saveFocus: () => undefined,\n      restoreFocus: () => undefined,\n      focusActiveNavigationItem: () => undefined,\n      trapFocus: () => undefined,\n      releaseFocus: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private animationFrame = 0;\n  private animationTimer = 0;\n\n  constructor(adapter?: Partial<MDCDrawerAdapter>) {\n    super({...MDCDismissibleDrawerFoundation.defaultAdapter, ...adapter});\n  }\n\n  destroy() {\n    if (this.animationFrame) {\n      cancelAnimationFrame(this.animationFrame);\n    }\n    if (this.animationTimer) {\n      clearTimeout(this.animationTimer);\n    }\n  }\n\n  /**\n   * Opens the drawer from the closed state.\n   */\n  open() {\n    if (this.isOpen() || this.isOpening() || this.isClosing()) {\n      return;\n    }\n\n    this.adapter.addClass(cssClasses.OPEN);\n    this.adapter.addClass(cssClasses.ANIMATE);\n\n    // Wait a frame once display is no longer \"none\", to establish basis for animation\n    this.runNextAnimationFrame(() => {\n      this.adapter.addClass(cssClasses.OPENING);\n    });\n\n    this.adapter.saveFocus();\n  }\n\n  /**\n   * Closes the drawer from the open state.\n   */\n  close() {\n    if (!this.isOpen() || this.isOpening() || this.isClosing()) {\n      return;\n    }\n\n    this.adapter.addClass(cssClasses.CLOSING);\n  }\n\n  /**\n   * Returns true if the drawer is in the open position.\n   * @return true if drawer is in open state.\n   */\n  isOpen(): boolean {\n    return this.adapter.hasClass(cssClasses.OPEN);\n  }\n\n  /**\n   * Returns true if the drawer is animating open.\n   * @return true if drawer is animating open.\n   */\n  isOpening(): boolean {\n    return this.adapter.hasClass(cssClasses.OPENING) ||\n        this.adapter.hasClass(cssClasses.ANIMATE);\n  }\n\n  /**\n   * Returns true if the drawer is animating closed.\n   * @return true if drawer is animating closed.\n   */\n  isClosing(): boolean {\n    return this.adapter.hasClass(cssClasses.CLOSING);\n  }\n\n  /**\n   * Keydown handler to close drawer when key is escape.\n   */\n  handleKeydown(evt: KeyboardEvent) {\n    const {keyCode, key} = evt;\n    const isEscape = key === 'Escape' || keyCode === 27;\n    if (isEscape) {\n      this.close();\n    }\n  }\n\n  /**\n   * Handles the `transitionend` event when the drawer finishes opening/closing.\n   */\n  handleTransitionEnd(evt: TransitionEvent) {\n    const {OPENING, CLOSING, OPEN, ANIMATE, ROOT} = cssClasses;\n\n    // In Edge, transitionend on ripple pseudo-elements yields a target without classList, so check for Element first.\n    const isRootElement = this.isElement(evt.target) &&\n        this.adapter.elementHasClass(evt.target, ROOT);\n    if (!isRootElement) {\n      return;\n    }\n\n    if (this.isClosing()) {\n      this.adapter.removeClass(OPEN);\n      this.closed();\n      this.adapter.restoreFocus();\n      this.adapter.notifyClose();\n    } else {\n      this.adapter.focusActiveNavigationItem();\n      this.opened();\n      this.adapter.notifyOpen();\n    }\n\n    this.adapter.removeClass(ANIMATE);\n    this.adapter.removeClass(OPENING);\n    this.adapter.removeClass(CLOSING);\n  }\n\n  /**\n   * Extension point for when drawer finishes open animation.\n   */\n  protected opened() {}  // tslint:disable-line:no-empty\n\n  /**\n   * Extension point for when drawer finishes close animation.\n   */\n  protected closed() {}  // tslint:disable-line:no-empty\n\n  /**\n   * Runs the given logic on the next animation frame, using setTimeout to factor in Firefox reflow behavior.\n   */\n  private runNextAnimationFrame(callback: () => void) {\n    cancelAnimationFrame(this.animationFrame);\n    this.animationFrame = requestAnimationFrame(() => {\n      this.animationFrame = 0;\n      clearTimeout(this.animationTimer);\n      this.animationTimer = setTimeout(callback, 0);\n    });\n  }\n\n  private isElement(element: unknown): element is Element {\n    // In Edge, transitionend on ripple pseudo-elements yields a target without classList.\n    return Boolean((element as Element).classList);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCDismissibleDrawerFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport * as util from './util';\n\nexport {util};\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './dismissible/foundation';\nexport * from './modal/foundation';\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCDismissibleDrawerFoundation} from '../dismissible/foundation';\n\n/* istanbul ignore next: subclass is not a branch statement */\nexport class MDCModalDrawerFoundation extends MDCDismissibleDrawerFoundation {\n  /**\n   * Handles click event on scrim.\n   */\n  handleScrimClick() {\n    this.close();\n  }\n\n  /**\n   * Called when drawer finishes open animation.\n   */\n  protected opened() {\n    this.adapter.trapFocus();\n  }\n\n  /**\n   * Called when drawer finishes close animation.\n   */\n  protected closed() {\n    this.adapter.releaseFocus();\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCModalDrawerFoundation;\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FocusOptions, FocusTrap} from '@material/dom/focus-trap';\n\nexport type MDCDrawerFocusTrapFactory = (\n    element: HTMLElement,\n    options: FocusOptions,\n) => FocusTrap;\n\nexport function createFocusTrapInstance(\n    surfaceEl: HTMLElement,\n    focusTrapFactory: MDCDrawerFocusTrapFactory,\n): FocusTrap {\n  return focusTrapFactory(surfaceEl, {\n    // Component handles focusing on active nav item.\n    skipInitialFocus: true, \n  });\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCFloatingLabelAdapter {\n  /**\n   * Adds a class to the label element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the label element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Returns the width of the label element.\n   */\n  getWidth(): number;\n\n  /**\n   * Registers an event listener on the root element for a given event.\n   */\n  registerInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the root element for a given event.\n   */\n  deregisterInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {estimateScrollWidth} from '@material/dom/ponyfill';\nimport {MDCFloatingLabelAdapter} from './adapter';\nimport {MDCFloatingLabelFoundation} from './foundation';\n\nexport type MDCFloatingLabelFactory = (el: Element, foundation?: MDCFloatingLabelFoundation) => MDCFloatingLabel;\n\nexport class MDCFloatingLabel extends MDCComponent<MDCFloatingLabelFoundation> {\n  static attachTo(root: Element): MDCFloatingLabel {\n    return new MDCFloatingLabel(root);\n  }\n\n  /**\n   * Styles the label to produce the label shake for errors.\n   * @param shouldShake If true, shakes the label by adding a CSS class; otherwise, stops shaking by removing the class.\n   */\n  shake(shouldShake: boolean) {\n    this.foundation.shake(shouldShake);\n  }\n\n  /**\n   * Styles the label to float/dock.\n   * @param shouldFloat If true, floats the label by adding a CSS class; otherwise, docks it by removing the class.\n   */\n  float(shouldFloat: boolean) {\n    this.foundation.float(shouldFloat);\n  }\n\n  /**\n   * Styles the label as required.\n   * @param isRequired If true, adds an asterisk to the label, indicating that it is required.\n   */\n  setRequired(isRequired: boolean) {\n    this.foundation.setRequired(isRequired);\n  }\n\n  getWidth(): number {\n    return this.foundation.getWidth();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCFloatingLabelAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      getWidth: () => estimateScrollWidth(this.root),\n      registerInteractionHandler: (evtType, handler) =>\n          this.listen(evtType, handler),\n      deregisterInteractionHandler: (evtType, handler) =>\n          this.unlisten(evtType, handler),\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCFloatingLabelFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const cssClasses = {\n  LABEL_FLOAT_ABOVE: 'mdc-floating-label--float-above',\n  LABEL_REQUIRED: 'mdc-floating-label--required',\n  LABEL_SHAKE: 'mdc-floating-label--shake',\n  ROOT: 'mdc-floating-label',\n};\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCFloatingLabelAdapter} from './adapter';\nimport {cssClasses} from './constants';\n\nexport class MDCFloatingLabelFoundation extends MDCFoundation<MDCFloatingLabelAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  /**\n   * See {@link MDCFloatingLabelAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCFloatingLabelAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      getWidth: () => 0,\n      registerInteractionHandler: () => undefined,\n      deregisterInteractionHandler: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private readonly shakeAnimationEndHandler:\n      SpecificEventListener<'animationend'>;\n\n  constructor(adapter?: Partial<MDCFloatingLabelAdapter>) {\n    super({...MDCFloatingLabelFoundation.defaultAdapter, ...adapter});\n\n    this.shakeAnimationEndHandler = () => {\n      this.handleShakeAnimationEnd();\n    };\n  }\n\n  init() {\n    this.adapter.registerInteractionHandler(\n        'animationend', this.shakeAnimationEndHandler);\n  }\n\n  destroy() {\n    this.adapter.deregisterInteractionHandler(\n        'animationend', this.shakeAnimationEndHandler);\n  }\n\n  /**\n   * Returns the width of the label element.\n   */\n  getWidth(): number {\n    return this.adapter.getWidth();\n  }\n\n  /**\n   * Styles the label to produce a shake animation to indicate an error.\n   * @param shouldShake If true, adds the shake CSS class; otherwise, removes shake class.\n   */\n  shake(shouldShake: boolean) {\n    const {LABEL_SHAKE} = MDCFloatingLabelFoundation.cssClasses;\n    if (shouldShake) {\n      this.adapter.addClass(LABEL_SHAKE);\n    } else {\n      this.adapter.removeClass(LABEL_SHAKE);\n    }\n  }\n\n  /**\n   * Styles the label to float or dock.\n   * @param shouldFloat If true, adds the float CSS class; otherwise, removes float and shake classes to dock the label.\n   */\n  float(shouldFloat: boolean) {\n    const {LABEL_FLOAT_ABOVE, LABEL_SHAKE} = MDCFloatingLabelFoundation.cssClasses;\n    if (shouldFloat) {\n      this.adapter.addClass(LABEL_FLOAT_ABOVE);\n    } else {\n      this.adapter.removeClass(LABEL_FLOAT_ABOVE);\n      this.adapter.removeClass(LABEL_SHAKE);\n    }\n  }\n\n  /**\n   * Styles the label as required.\n   * @param isRequired If true, adds an asterisk to the label, indicating that it is required.\n   */\n  setRequired(isRequired: boolean) {\n    const {LABEL_REQUIRED} = MDCFloatingLabelFoundation.cssClasses;\n    if (isRequired) {\n      this.adapter.addClass(LABEL_REQUIRED);\n    } else {\n      this.adapter.removeClass(LABEL_REQUIRED);\n    }\n  }\n\n  private handleShakeAnimationEnd() {\n    const {LABEL_SHAKE} = MDCFloatingLabelFoundation.cssClasses;\n    this.adapter.removeClass(LABEL_SHAKE);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCFloatingLabelFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCFormFieldAdapter {\n  activateInputRipple(): void;\n  deactivateInputRipple(): void;\n  deregisterInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n  registerInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCFormFieldAdapter} from './adapter';\nimport {MDCFormFieldFoundation} from './foundation';\n\nexport interface MDCFormFieldInput {\n  readonly ripple: MDCRipple | undefined;\n}\n\nexport class MDCFormField extends MDCComponent<MDCFormFieldFoundation> {\n  static attachTo(root: HTMLElement) {\n    return new MDCFormField(root);\n  }\n\n  input?: MDCFormFieldInput;\n\n  private labelEl(): Element|null {\n    const {LABEL_SELECTOR} = MDCFormFieldFoundation.strings;\n    return this.root.querySelector(LABEL_SELECTOR);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCFormFieldAdapter = {\n      activateInputRipple: () => {\n        if (this.input && this.input.ripple) {\n          this.input.ripple.activate();\n        }\n      },\n      deactivateInputRipple: () => {\n        if (this.input && this.input.ripple) {\n          this.input.ripple.deactivate();\n        }\n      },\n      deregisterInteractionHandler: (evtType, handler) => {\n        const labelEl = this.labelEl();\n        if (labelEl) {\n          (labelEl as HTMLElement).removeEventListener(evtType, handler);\n        }\n      },\n      registerInteractionHandler: (evtType, handler) => {\n        const labelEl = this.labelEl();\n        if (labelEl) {\n          (labelEl as HTMLElement).addEventListener(evtType, handler);\n        }\n      },\n    };\n    return new MDCFormFieldFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const cssClasses = {\n  ROOT: 'mdc-form-field',\n};\n\nexport const strings = {\n  LABEL_SELECTOR: '.mdc-form-field > label',\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCFormFieldAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCFormFieldFoundation extends MDCFoundation<MDCFormFieldAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCFormFieldAdapter {\n    return {\n      activateInputRipple: () => undefined,\n      deactivateInputRipple: () => undefined,\n      deregisterInteractionHandler: () => undefined,\n      registerInteractionHandler: () => undefined,\n    };\n  }\n\n  private readonly click: () => void;\n\n  constructor(adapter?: Partial<MDCFormFieldAdapter>) {\n    super({...MDCFormFieldFoundation.defaultAdapter, ...adapter});\n\n    this.click = () => {\n      this.handleClick();\n    };\n  }\n\n  init() {\n    this.adapter.registerInteractionHandler('click', this.click);\n  }\n\n  destroy() {\n    this.adapter.deregisterInteractionHandler('click', this.click);\n  }\n\n  private handleClick() {\n    this.adapter.activateInputRipple();\n    requestAnimationFrame(() => {\n      this.adapter.deactivateInputRipple();\n    });\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCFormFieldFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCIconButtonToggleEventDetail} from './types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCIconButtonToggleAdapter {\n  addClass(className: string): void;\n\n  removeClass(className: string): void;\n\n  hasClass(className: string): boolean;\n\n  /** Returns the given attribute value on the root element. */\n  getAttr(attrName: string): string|null;\n\n  setAttr(attrName: string, attrValue: string): void;\n\n  notifyChange(evtData: MDCIconButtonToggleEventDetail): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCIconButtonToggleAdapter} from './adapter';\nimport {MDCIconButtonToggleFoundation} from './foundation';\nimport {MDCIconButtonToggleEventDetail} from './types';\n\nconst {strings} = MDCIconButtonToggleFoundation;\n\nexport class MDCIconButtonToggle extends MDCComponent<MDCIconButtonToggleFoundation> {\n  static attachTo(root: HTMLElement) {\n    return new MDCIconButtonToggle(root);\n  }\n\n  private readonly rippleComponent: MDCRipple = this.createRipple();\n  private handleClick!:\n      SpecificEventListener<'click'>;  // assigned in initialSyncWithDOM()\n\n  initialSyncWithDOM() {\n    this.handleClick = () => {\n      this.foundation.handleClick();\n    };\n    this.listen('click', this.handleClick);\n  }\n\n  destroy() {\n    this.unlisten('click', this.handleClick);\n    this.ripple.destroy();\n    super.destroy();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCIconButtonToggleAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      hasClass: (className) => this.root.classList.contains(className),\n      notifyChange: (evtData) => {\n        this.emit<MDCIconButtonToggleEventDetail>(\n            strings.CHANGE_EVENT, evtData);\n      },\n      removeClass: (className) => this.root.classList.remove(className),\n      getAttr: (attrName) => this.root.getAttribute(attrName),\n      setAttr: (attrName, attrValue) =>\n          this.root.setAttribute(attrName, attrValue),\n    };\n    return new MDCIconButtonToggleFoundation(adapter);\n  }\n\n  get ripple(): MDCRipple {\n    return this.rippleComponent;\n  }\n\n  get on(): boolean {\n    return this.foundation.isOn();\n  }\n\n  set on(isOn: boolean) {\n    this.foundation.toggle(isOn);\n  }\n\n  private createRipple(): MDCRipple {\n    const ripple = new MDCRipple(this.root);\n    ripple.unbounded = true;\n    return ripple;\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const cssClasses = {\n  ICON_BUTTON_ON: 'mdc-icon-button--on',\n  ROOT: 'mdc-icon-button',\n};\n\nexport const strings = {\n  ARIA_LABEL: 'aria-label',\n  ARIA_PRESSED: 'aria-pressed',\n  DATA_ARIA_LABEL_OFF: 'data-aria-label-off',\n  DATA_ARIA_LABEL_ON: 'data-aria-label-on',\n  CHANGE_EVENT: 'MDCIconButtonToggle:change',\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCIconButtonToggleAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCIconButtonToggleFoundation extends MDCFoundation<MDCIconButtonToggleAdapter> {\n  /**\n   * Whether the icon button has an aria label that changes depending on\n   * toggled state.\n   */\n  private hasToggledAriaLabel: boolean = false;\n\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCIconButtonToggleAdapter {\n    return {\n      addClass: () => undefined,\n      hasClass: () => false,\n      notifyChange: () => undefined,\n      removeClass: () => undefined,\n      getAttr: () => null,\n      setAttr: () => undefined,\n    };\n  }\n\n  constructor(adapter?: Partial<MDCIconButtonToggleAdapter>) {\n    super({...MDCIconButtonToggleFoundation.defaultAdapter, ...adapter});\n  }\n\n  init() {\n    const ariaLabelOn = this.adapter.getAttr(strings.DATA_ARIA_LABEL_ON);\n    const ariaLabelOff = this.adapter.getAttr(strings.DATA_ARIA_LABEL_OFF);\n    if (ariaLabelOn && ariaLabelOff) {\n      if (this.adapter.getAttr(strings.ARIA_PRESSED) !== null) {\n        throw new Error(\n            'MDCIconButtonToggleFoundation: Button should not set ' +\n            '`aria-pressed` if it has a toggled aria label.');\n      }\n\n      this.hasToggledAriaLabel = true;\n    } else {\n      this.adapter.setAttr(strings.ARIA_PRESSED, String(this.isOn()));\n    }\n  }\n\n  handleClick() {\n    this.toggle();\n    this.adapter.notifyChange({isOn: this.isOn()});\n  }\n\n  isOn(): boolean {\n    return this.adapter.hasClass(cssClasses.ICON_BUTTON_ON);\n  }\n\n  toggle(isOn: boolean = !this.isOn()) {\n    // Toggle UI based on state.\n    if (isOn) {\n      this.adapter.addClass(cssClasses.ICON_BUTTON_ON);\n    } else {\n      this.adapter.removeClass(cssClasses.ICON_BUTTON_ON);\n    }\n\n    // Toggle aria attributes based on state.\n    if (this.hasToggledAriaLabel) {\n      const ariaLabel = isOn ?\n          this.adapter.getAttr(strings.DATA_ARIA_LABEL_ON) :\n          this.adapter.getAttr(strings.DATA_ARIA_LABEL_OFF);\n      this.adapter.setAttr(strings.ARIA_LABEL, ariaLabel || '');\n    } else {\n      this.adapter.setAttr(strings.ARIA_PRESSED, `${isOn}`);\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCIconButtonToggleFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport interface MDCIconButtonToggleEventDetail {\n  isOn: boolean;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCLineRippleAdapter {\n  /**\n   * Adds a class to the line ripple element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the line ripple element.\n   */\n  removeClass(className: string): void;\n\n  hasClass(className: string): boolean;\n\n  /**\n   * Sets the style property with propertyName to value on the root element.\n   */\n  setStyle(propertyName: string, value: string): void;\n\n  /**\n   * Registers an event listener on the line ripple element for a given event.\n   */\n  registerEventHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the line ripple element for a given event.\n   */\n  deregisterEventHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCLineRippleAdapter} from './adapter';\nimport {MDCLineRippleFoundation} from './foundation';\n\nexport type MDCLineRippleFactory = (el: Element, foundation?: MDCLineRippleFoundation) => MDCLineRipple;\n\nexport class MDCLineRipple extends MDCComponent<MDCLineRippleFoundation> {\n  static attachTo(root: Element): MDCLineRipple {\n    return new MDCLineRipple(root);\n  }\n\n  /**\n   * Activates the line ripple\n   */\n  activate() {\n    this.foundation.activate();\n  }\n\n  /**\n   * Deactivates the line ripple\n   */\n  deactivate() {\n    this.foundation.deactivate();\n  }\n\n  /**\n   * Sets the transform origin given a user's click location.\n   * The `rippleCenter` is the x-coordinate of the middle of the ripple.\n   */\n  setRippleCenter(xCoordinate: number) {\n    this.foundation.setRippleCenter(xCoordinate);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCLineRippleAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      hasClass: (className) => this.root.classList.contains(className),\n      setStyle: (propertyName, value) => (this.root as HTMLElement).style.setProperty(propertyName, value),\n      registerEventHandler: (evtType, handler) => this.listen(evtType, handler),\n      deregisterEventHandler: (evtType, handler) => this.unlisten(evtType, handler),\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCLineRippleFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  LINE_RIPPLE_ACTIVE: 'mdc-line-ripple--active',\n  LINE_RIPPLE_DEACTIVATING: 'mdc-line-ripple--deactivating',\n};\n\nexport {cssClasses};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCLineRippleAdapter} from './adapter';\nimport {cssClasses} from './constants';\n\nexport class MDCLineRippleFoundation extends MDCFoundation<MDCLineRippleAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  /**\n   * See {@link MDCLineRippleAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCLineRippleAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => false,\n      setStyle: () => undefined,\n      registerEventHandler: () => undefined,\n      deregisterEventHandler: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private readonly transitionEndHandler: SpecificEventListener<'transitionend'>;\n\n  constructor(adapter?: Partial<MDCLineRippleAdapter>) {\n    super({...MDCLineRippleFoundation.defaultAdapter, ...adapter});\n\n    this.transitionEndHandler = (evt) => {\n      this.handleTransitionEnd(evt);\n    };\n  }\n\n  init() {\n    this.adapter.registerEventHandler(\n        'transitionend', this.transitionEndHandler);\n  }\n\n  destroy() {\n    this.adapter.deregisterEventHandler(\n        'transitionend', this.transitionEndHandler);\n  }\n\n  activate() {\n    this.adapter.removeClass(cssClasses.LINE_RIPPLE_DEACTIVATING);\n    this.adapter.addClass(cssClasses.LINE_RIPPLE_ACTIVE);\n  }\n\n  setRippleCenter(xCoordinate: number) {\n    this.adapter.setStyle('transform-origin', `${xCoordinate}px center`);\n  }\n\n  deactivate() {\n    this.adapter.addClass(cssClasses.LINE_RIPPLE_DEACTIVATING);\n  }\n\n  handleTransitionEnd(evt: TransitionEvent) {\n    // Wait for the line ripple to be either transparent or opaque\n    // before emitting the animation end event\n    const isDeactivating =\n        this.adapter.hasClass(cssClasses.LINE_RIPPLE_DEACTIVATING);\n\n    if (evt.propertyName === 'opacity') {\n      if (isDeactivating) {\n        this.adapter.removeClass(cssClasses.LINE_RIPPLE_ACTIVE);\n        this.adapter.removeClass(cssClasses.LINE_RIPPLE_DEACTIVATING);\n      }\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCLineRippleFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\n\nimport {MDCResizeObserver, MDCResizeObserverCallback} from './types';\n\nexport interface MDCLinearProgressAdapter {\n  addClass(className: string): void;\n  /**\n   * If available, creates a `ResizeObserver` object, invokes the `#observe`\n   * method on the root element. This is used for an optional performance gains\n   * for the indeterminate animation on modern browsers.\n   *\n   * @param callback The callback to apply to the constructor of the\n   *    `ResizeObserver`\n   * @return Returns a `ResizeObserver` that has had `observe` called on the\n   *    root element with the given callback. `null` if `ResizeObserver` is not\n   *    implemented or polyfilled.\n   */\n  attachResizeObserver(callback: MDCResizeObserverCallback): MDCResizeObserver\n      |null;\n  forceLayout(): void;\n  setBufferBarStyle(styleProperty: string, value: string): void;\n  setPrimaryBarStyle(styleProperty: string, value: string): void;\n  /**\n   * Sets the inline style on the root element.\n   * @param styleProperty The style property to set.\n   * @param value The value the style property should be set to.\n   */\n  setStyle(styleProperty: string, value: string): void;\n  /**\n   * @return The width of the root element.\n   */\n  getWidth(): number;\n  hasClass(className: string): boolean;\n  removeClass(className: string): void;\n  removeAttribute(name: string): void;\n  setAttribute(name: string, value: string): void;\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCProgressIndicator} from '@material/progress-indicator/component';\nimport {MDCLinearProgressAdapter} from './adapter';\nimport {MDCLinearProgressFoundation} from './foundation';\nimport {WithMDCResizeObserver} from './types';\n\nexport class MDCLinearProgress extends\n    MDCComponent<MDCLinearProgressFoundation> implements MDCProgressIndicator {\n  static attachTo(root: Element) {\n    return new MDCLinearProgress(root);\n  }\n\n  set determinate(value: boolean) {\n    this.foundation.setDeterminate(value);\n  }\n\n  set progress(value: number) {\n    this.foundation.setProgress(value);\n  }\n\n  set buffer(value: number) {\n    this.foundation.setBuffer(value);\n  }\n\n  open() {\n    this.foundation.open();\n  }\n\n  close() {\n    this.foundation.close();\n  }\n\n  initialSyncWithDOM() {\n    this.root.addEventListener('transitionend', () => {\n      this.foundation.handleTransitionEnd();\n    });\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take\n    // a Partial<MDCFooAdapter>. To ensure we don't accidentally omit any\n    // methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCLinearProgressAdapter = {\n      addClass: (className: string) => {\n        this.root.classList.add(className);\n      },\n      forceLayout: () => {\n        this.root.getBoundingClientRect();\n      },\n      setBufferBarStyle: (styleProperty: string, value: string) => {\n        const bufferBar = this.root.querySelector<HTMLElement>(\n            MDCLinearProgressFoundation.strings.BUFFER_BAR_SELECTOR);\n        if (bufferBar) {\n          bufferBar.style.setProperty(styleProperty, value);\n        }\n      },\n      setPrimaryBarStyle: (styleProperty: string, value: string) => {\n        const primaryBar = this.root.querySelector<HTMLElement>(\n            MDCLinearProgressFoundation.strings.PRIMARY_BAR_SELECTOR);\n        if (primaryBar) {\n          primaryBar.style.setProperty(styleProperty, value);\n        }\n      },\n      hasClass: (className: string) => this.root.classList.contains(className),\n      removeAttribute: (attributeName: string) => {\n        this.root.removeAttribute(attributeName);\n      },\n      removeClass: (className: string) => {\n        this.root.classList.remove(className);\n      },\n      setAttribute: (attributeName: string, value: string) => {\n        this.root.setAttribute(attributeName, value);\n      },\n      setStyle: (name: string, value: string) => {\n        (this.root as HTMLElement).style.setProperty(name, value);\n      },\n      attachResizeObserver: (callback) => {\n        const RO = (window as unknown as WithMDCResizeObserver).ResizeObserver;\n        if (RO) {\n          const ro = new RO(callback);\n          ro.observe(this.root);\n          return ro;\n        }\n\n        return null;\n      },\n      getWidth: () => (this.root as HTMLElement).offsetWidth,\n    };\n    return new MDCLinearProgressFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const cssClasses = {\n  CLOSED_CLASS: 'mdc-linear-progress--closed',\n  CLOSED_ANIMATION_OFF_CLASS: 'mdc-linear-progress--closed-animation-off',\n  INDETERMINATE_CLASS: 'mdc-linear-progress--indeterminate',\n  REVERSED_CLASS: 'mdc-linear-progress--reversed',\n  ANIMATION_READY_CLASS: 'mdc-linear-progress--animation-ready',\n};\n\nexport const strings = {\n  ARIA_HIDDEN: 'aria-hidden',\n  ARIA_VALUEMAX: 'aria-valuemax',\n  ARIA_VALUEMIN: 'aria-valuemin',\n  ARIA_VALUENOW: 'aria-valuenow',\n  BUFFER_BAR_SELECTOR: '.mdc-linear-progress__buffer-bar',\n  FLEX_BASIS: 'flex-basis',\n  PRIMARY_BAR_SELECTOR: '.mdc-linear-progress__primary-bar',\n};\n\n// these are percentages pulled from keyframes.scss\nexport const animationDimensionPercentages = {\n  PRIMARY_HALF: .8367142,\n  PRIMARY_FULL: 2.00611057,\n  SECONDARY_QUARTER: .37651913,\n  SECONDARY_HALF: .84386165,\n  SECONDARY_FULL: 1.60277782,\n};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {getCorrectPropertyName} from '@material/animation/util';\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCProgressIndicatorFoundation} from '@material/progress-indicator/foundation';\n\nimport {MDCLinearProgressAdapter} from './adapter';\nimport {animationDimensionPercentages as percents, cssClasses, strings} from './constants';\nimport {MDCResizeObserver} from './types';\n\nexport class MDCLinearProgressFoundation extends\n    MDCFoundation<MDCLinearProgressAdapter> implements\n        MDCProgressIndicatorFoundation {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCLinearProgressAdapter {\n    return {\n      addClass: () => undefined,\n      attachResizeObserver: () => null,\n      forceLayout: () => undefined,\n      getWidth: () => 0,\n      hasClass: () => false,\n      setBufferBarStyle: () => null,\n      setPrimaryBarStyle: () => null,\n      setStyle: () => undefined,\n      removeAttribute: () => undefined,\n      removeClass: () => undefined,\n      setAttribute: () => undefined,\n    };\n  }\n\n  private determinate!: boolean;\n  private progress!: number;\n  private buffer!: number;\n  private observer: MDCResizeObserver|null = null;\n\n  constructor(adapter?: Partial<MDCLinearProgressAdapter>) {\n    super({...MDCLinearProgressFoundation.defaultAdapter, ...adapter});\n  }\n\n  init() {\n    this.determinate = !this.adapter.hasClass(cssClasses.INDETERMINATE_CLASS);\n    this.adapter.addClass(cssClasses.ANIMATION_READY_CLASS);\n    this.progress = 0;\n    this.buffer = 1;\n\n    this.observer = this.adapter.attachResizeObserver((entries) => {\n      if (this.determinate) {\n        return;\n      }\n\n      for (const entry of entries) {\n        if (entry.contentRect) {\n          this.calculateAndSetDimensions(entry.contentRect.width);\n        }\n      }\n    });\n\n    if (!this.determinate && this.observer) {\n      this.calculateAndSetDimensions(this.adapter.getWidth());\n    }\n  }\n\n  setDeterminate(isDeterminate: boolean) {\n    this.determinate = isDeterminate;\n\n    if (this.determinate) {\n      this.adapter.removeClass(cssClasses.INDETERMINATE_CLASS);\n      this.adapter.setAttribute(\n          strings.ARIA_VALUENOW, this.progress.toString());\n      this.adapter.setAttribute(strings.ARIA_VALUEMAX, '1');\n      this.adapter.setAttribute(strings.ARIA_VALUEMIN, '0');\n      this.setPrimaryBarProgress(this.progress);\n      this.setBufferBarProgress(this.buffer);\n\n      return;\n    }\n\n    if (this.observer) {\n      this.calculateAndSetDimensions(this.adapter.getWidth());\n    }\n\n    this.adapter.addClass(cssClasses.INDETERMINATE_CLASS);\n    this.adapter.removeAttribute(strings.ARIA_VALUENOW);\n    this.adapter.removeAttribute(strings.ARIA_VALUEMAX);\n    this.adapter.removeAttribute(strings.ARIA_VALUEMIN);\n    this.setPrimaryBarProgress(1);\n    this.setBufferBarProgress(1);\n  }\n\n  isDeterminate() {\n    return this.determinate;\n  }\n\n  setProgress(value: number) {\n    this.progress = value;\n    if (this.determinate) {\n      this.setPrimaryBarProgress(value);\n      this.adapter.setAttribute(strings.ARIA_VALUENOW, value.toString());\n    }\n  }\n\n  getProgress() {\n    return this.progress;\n  }\n\n  setBuffer(value: number) {\n    this.buffer = value;\n    if (this.determinate) {\n      this.setBufferBarProgress(value);\n    }\n  }\n\n  getBuffer() {\n    return this.buffer;\n  }\n\n  open() {\n    this.adapter.removeClass(cssClasses.CLOSED_CLASS);\n    this.adapter.removeClass(cssClasses.CLOSED_ANIMATION_OFF_CLASS);\n    this.adapter.removeAttribute(strings.ARIA_HIDDEN);\n  }\n\n  close() {\n    this.adapter.addClass(cssClasses.CLOSED_CLASS);\n    this.adapter.setAttribute(strings.ARIA_HIDDEN, 'true');\n  }\n\n  isClosed() {\n    return this.adapter.hasClass(cssClasses.CLOSED_CLASS);\n  }\n\n  /**\n   * Handles the transitionend event emitted after `close()` is called and the\n   * opacity fades out. This is so that animations are removed only after the\n   * progress indicator is completely hidden.\n   */\n  handleTransitionEnd() {\n    if (this.adapter.hasClass(cssClasses.CLOSED_CLASS)) {\n      this.adapter.addClass(cssClasses.CLOSED_ANIMATION_OFF_CLASS);\n    }\n  }\n\n  destroy() {\n    super.destroy();\n\n    if (this.observer) {\n      this.observer.disconnect();\n    }\n  }\n\n  restartAnimation() {\n    this.adapter.removeClass(cssClasses.ANIMATION_READY_CLASS);\n    this.adapter.forceLayout();\n    this.adapter.addClass(cssClasses.ANIMATION_READY_CLASS);\n  }\n\n  private setPrimaryBarProgress(progressValue: number) {\n    const value = `scaleX(${progressValue})`;\n\n    // Accessing `window` without a `typeof` check will throw on Node\n    // environments.\n    const transformProp = typeof window !== 'undefined' ?\n        getCorrectPropertyName(window, 'transform') :\n        'transform';\n    this.adapter.setPrimaryBarStyle(transformProp, value);\n  }\n\n  private setBufferBarProgress(progressValue: number) {\n    const value = `${progressValue * 100}%`;\n    this.adapter.setBufferBarStyle(strings.FLEX_BASIS, value);\n  }\n\n  private calculateAndSetDimensions(width: number) {\n    const primaryHalf = width * percents.PRIMARY_HALF;\n    const primaryFull = width * percents.PRIMARY_FULL;\n    const secondaryQuarter = width * percents.SECONDARY_QUARTER;\n    const secondaryHalf = width * percents.SECONDARY_HALF;\n    const secondaryFull = width * percents.SECONDARY_FULL;\n\n    this.adapter.setStyle(\n        '--mdc-linear-progress-primary-half', `${primaryHalf}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-primary-half-neg', `${- primaryHalf}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-primary-full', `${primaryFull}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-primary-full-neg', `${- primaryFull}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-secondary-quarter', `${secondaryQuarter}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-secondary-quarter-neg',\n        `${- secondaryQuarter}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-secondary-half', `${secondaryHalf}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-secondary-half-neg', `${- secondaryHalf}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-secondary-full', `${secondaryFull}px`);\n    this.adapter.setStyle(\n        '--mdc-linear-progress-secondary-full-neg', `${- secondaryFull}px`);\n\n    // need to restart animation for custom props to apply to keyframes\n    this.restartAnimation();\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCLinearProgressFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2021 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// Opt-in resize observer types\n\nexport interface MDCResizeObserverEntry {\n  contentRect: DOMRectReadOnly;\n}\n\nexport interface MDCResizeObserver {\n  new(callback: MDCResizeObserverCallback): MDCResizeObserver;\n  disconnect(): void;\n  observe(target: Element): void;\n}\n\nexport interface WithMDCResizeObserver {\n  ResizeObserver: MDCResizeObserver;\n}\n\nexport type MDCResizeObserverCallback =\n    (entries: MDCResizeObserverEntry[], observer: MDCResizeObserver) => void;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCListAdapter {\n  /**\n   * Returns the attribute value of list item at given `index`.\n   */\n  getAttributeForElementIndex(index: number, attr: string): string | null;\n\n  getListItemCount(): number;\n\n  getFocusedElementIndex(): number;\n\n  setAttributeForElementIndex(index: number, attribute: string, value: string): void;\n\n  addClassForElementIndex(index: number, className: string): void;\n\n  removeClassForElementIndex(index: number, className: string): void;\n\n  /**\n   * Focuses list item at the index specified.\n   */\n  focusItemAtIndex(index: number): void;\n\n  /**\n   * Sets the tabindex to the value specified for all button/a element children of\n   * the list item at the index specified.\n   */\n  setTabIndexForListItemChildren(listItemIndex: number, tabIndexValue: string): void;\n\n  /**\n   * @return true if radio button is present at given list item index.\n   */\n  hasRadioAtIndex(index: number): boolean;\n\n  /**\n   * @return true if checkbox is present at given list item index.\n   */\n  hasCheckboxAtIndex(index: number): boolean;\n\n  /**\n   * @return true if checkbox inside a list item is checked.\n   */\n  isCheckboxCheckedAtIndex(index: number): boolean;\n\n  /**\n   * @return true if root element is focused.\n   */\n  isRootFocused(): boolean;\n\n  /**\n   * @param index list item index.\n   * @param className the name of the class whose presence is to be checked.\n   * @return true if list item at `index` has class `className`.\n   */\n  listItemAtIndexHasClass(index: number, className: string): boolean;\n\n  /**\n   * Sets the checked status of checkbox or radio at given list item index.\n   */\n  setCheckedCheckboxOrRadioAtIndex(index: number, isChecked: boolean): void;\n\n  /**\n   * Notifies user action on list item.\n   */\n  notifyAction(index: number): void;\n\n  /**\n   * @return true when the current focused element is inside list root.\n   */\n  isFocusInsideList(): boolean;\n\n  /**\n   * @return the primary text content of the list item at index.\n   */\n  getPrimaryTextAtIndex(index: number): string;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {closest, matches} from '@material/dom/ponyfill';\nimport {MDCListAdapter} from './adapter';\nimport {cssClasses, deprecatedClassNameMap, evolutionAttribute, evolutionClassNameMap, numbers, strings} from './constants';\nimport {MDCListFoundation} from './foundation';\nimport {MDCListActionEventDetail, MDCListIndex} from './types';\n\nexport type MDCListFactory = (el: Element, foundation?: MDCListFoundation) =>\n    MDCList;\n\nexport class MDCList extends MDCComponent<MDCListFoundation> {\n  set vertical(value: boolean) {\n    this.foundation.setVerticalOrientation(value);\n  }\n\n  get listElements(): Element[] {\n    return Array.from(this.root.querySelectorAll(\n        `.${this.classNameMap[cssClasses.LIST_ITEM_CLASS]}`));\n  }\n\n  set wrapFocus(value: boolean) {\n    this.foundation.setWrapFocus(value);\n  }\n\n  /**\n   * @return Whether typeahead is currently matching a user-specified prefix.\n   */\n  get typeaheadInProgress(): boolean {\n    return this.foundation.isTypeaheadInProgress();\n  }\n\n  /**\n   * Sets whether typeahead functionality is enabled on the list.\n   * @param hasTypeahead Whether typeahead is enabled.\n   */\n  set hasTypeahead(hasTypeahead: boolean) {\n    this.foundation.setHasTypeahead(hasTypeahead);\n  }\n\n  set singleSelection(isSingleSelectionList: boolean) {\n    this.foundation.setSingleSelection(isSingleSelectionList);\n  }\n\n  get selectedIndex(): MDCListIndex {\n    return this.foundation.getSelectedIndex();\n  }\n\n  set selectedIndex(index: MDCListIndex) {\n    this.foundation.setSelectedIndex(index);\n  }\n\n  static attachTo(root: Element) {\n    return new MDCList(root);\n  }\n\n  // The follow are assigned in initialSyncWithDOM().\n  private handleKeydown!: SpecificEventListener<'keydown'>;\n  private handleClick!: SpecificEventListener<'click'>;\n  private focusInEventListener!: SpecificEventListener<'focus'>;\n  private focusOutEventListener!: SpecificEventListener<'focus'>;\n\n  // This mapping provides a layer of indirection from legacy classes to\n  // evolution classes, since there are some inconsistencies between the\n  // two.\n  // TODO(b/176814973): remove this map when evolution is launched.\n  private classNameMap!: {[className: string]: string};\n  private isEvolutionEnabled!: boolean;\n  private isInteractive!: boolean;\n\n  initialSyncWithDOM() {\n    this.isEvolutionEnabled =\n        evolutionAttribute in (this.root as HTMLElement).dataset;\n\n    if (this.isEvolutionEnabled) {\n      this.classNameMap = evolutionClassNameMap;\n    } else if (matches(this.root, strings.DEPRECATED_SELECTOR)) {\n      this.classNameMap = deprecatedClassNameMap;\n    } else {\n      this.classNameMap =\n          Object.values(cssClasses)\n              .reduce((obj: {[className: string]: string}, className) => {\n                obj[className] = className;\n                return obj;\n              }, {});\n    }\n\n    this.handleClick = this.handleClickEvent.bind(this);\n    this.handleKeydown = this.handleKeydownEvent.bind(this);\n    this.focusInEventListener = this.handleFocusInEvent.bind(this);\n    this.focusOutEventListener = this.handleFocusOutEvent.bind(this);\n    this.listen('keydown', this.handleKeydown);\n    this.listen('click', this.handleClick);\n    this.listen('focusin', this.focusInEventListener);\n    this.listen('focusout', this.focusOutEventListener);\n    this.layout();\n    this.initializeListType();\n    this.ensureFocusable();\n  }\n\n  destroy() {\n    this.unlisten('keydown', this.handleKeydown);\n    this.unlisten('click', this.handleClick);\n    this.unlisten('focusin', this.focusInEventListener);\n    this.unlisten('focusout', this.focusOutEventListener);\n  }\n\n  layout() {\n    const direction = this.root.getAttribute(strings.ARIA_ORIENTATION);\n    this.vertical = direction !== strings.ARIA_ORIENTATION_HORIZONTAL;\n\n    const itemSelector =\n        `.${this.classNameMap[cssClasses.LIST_ITEM_CLASS]}:not([tabindex])`;\n    const childSelector = strings.FOCUSABLE_CHILD_ELEMENTS;\n\n    // List items need to have at least tabindex=-1 to be focusable.\n    const itemEls = this.root.querySelectorAll(itemSelector);\n    if (itemEls.length) {\n      Array.prototype.forEach.call(itemEls, (el: Element) => {\n        el.setAttribute('tabindex', '-1');\n      });\n    }\n\n    // Child button/a elements are not tabbable until the list item is focused.\n    const focusableChildEls = this.root.querySelectorAll(childSelector);\n    if (focusableChildEls.length) {\n      Array.prototype.forEach.call(focusableChildEls, (el: Element) => {\n        el.setAttribute('tabindex', '-1');\n      });\n    }\n\n    if (this.isEvolutionEnabled) {\n      this.foundation.setUseSelectedAttribute(true);\n    }\n    this.foundation.layout();\n  }\n\n  /**\n   * Extracts the primary text from a list item.\n   * @param item The list item element.\n   * @return The primary text in the element.\n   */\n  getPrimaryText(item: Element): string {\n    const primaryText = item.querySelector(\n        `.${this.classNameMap[cssClasses.LIST_ITEM_PRIMARY_TEXT_CLASS]}`);\n    if (this.isEvolutionEnabled || primaryText) {\n      return primaryText?.textContent ?? '';\n    }\n\n    const singleLineText = item.querySelector(\n        `.${this.classNameMap[cssClasses.LIST_ITEM_TEXT_CLASS]}`);\n    return (singleLineText && singleLineText.textContent) || '';\n  }\n\n  /**\n   * Initialize selectedIndex value based on pre-selected list items.\n   */\n  initializeListType() {\n    this.isInteractive =\n        matches(this.root, strings.ARIA_INTERACTIVE_ROLES_SELECTOR);\n\n    if (this.isEvolutionEnabled && this.isInteractive) {\n      const selection = Array.from(\n          this.root.querySelectorAll(strings.SELECTED_ITEM_SELECTOR),\n          (listItem: Element) => this.listElements.indexOf(listItem));\n\n      if (matches(this.root, strings.ARIA_MULTI_SELECTABLE_SELECTOR)) {\n        this.selectedIndex = selection;\n      } else if (selection.length > 0) {\n        this.selectedIndex = selection[0];\n      }\n      return;\n    }\n\n    const checkboxListItems =\n        this.root.querySelectorAll(strings.ARIA_ROLE_CHECKBOX_SELECTOR);\n    const radioSelectedListItem =\n        this.root.querySelector(strings.ARIA_CHECKED_RADIO_SELECTOR);\n\n    if (checkboxListItems.length) {\n      const preselectedItems =\n          this.root.querySelectorAll(strings.ARIA_CHECKED_CHECKBOX_SELECTOR);\n      this.selectedIndex = Array.from(\n          preselectedItems,\n          (listItem: Element) => this.listElements.indexOf(listItem));\n    } else if (radioSelectedListItem) {\n      this.selectedIndex = this.listElements.indexOf(radioSelectedListItem);\n    }\n  }\n\n  /**\n   * Updates the list item at itemIndex to the desired isEnabled state.\n   * @param itemIndex Index of the list item\n   * @param isEnabled Sets the list item to enabled or disabled.\n   */\n  setEnabled(itemIndex: number, isEnabled: boolean) {\n    this.foundation.setEnabled(itemIndex, isEnabled);\n  }\n\n  /**\n   * Given the next desired character from the user, adds it to the typeahead\n   * buffer. Then, attempts to find the next option matching the buffer. Wraps\n   * around if at the end of options.\n   *\n   * @param nextChar The next character to add to the prefix buffer.\n   * @param startingIndex The index from which to start matching. Defaults to\n   *     the currently focused index.\n   * @return The index of the matched item.\n   */\n  typeaheadMatchItem(nextChar: string, startingIndex?: number): number {\n    return this.foundation.typeaheadMatchItem(\n        nextChar, startingIndex, /** skipFocus */ true);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take\n    // a Partial<MDCFooAdapter>. To ensure we don't accidentally omit any\n    // methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCListAdapter = {\n      addClassForElementIndex: (index, className) => {\n        const element = this.listElements[index];\n        if (element) {\n          element.classList.add(this.classNameMap[className]);\n        }\n      },\n      focusItemAtIndex: (index) => {\n        const element = this.listElements[index] as HTMLElement | undefined;\n        if (element) {\n          element.focus();\n        }\n      },\n      getAttributeForElementIndex: (index, attr) =>\n          this.listElements[index].getAttribute(attr),\n      getFocusedElementIndex: () =>\n          this.listElements.indexOf(document.activeElement!),\n      getListItemCount: () => this.listElements.length,\n      getPrimaryTextAtIndex: (index) =>\n          this.getPrimaryText(this.listElements[index]),\n      hasCheckboxAtIndex: (index) => {\n        const listItem = this.listElements[index];\n        return !!listItem.querySelector(strings.CHECKBOX_SELECTOR);\n      },\n      hasRadioAtIndex: (index) => {\n        const listItem = this.listElements[index];\n        return !!listItem.querySelector(strings.RADIO_SELECTOR);\n      },\n      isCheckboxCheckedAtIndex: (index) => {\n        const listItem = this.listElements[index];\n        const toggleEl =\n            listItem.querySelector<HTMLInputElement>(strings.CHECKBOX_SELECTOR);\n        return toggleEl!.checked;\n      },\n      isFocusInsideList: () => {\n        return this.root !== document.activeElement &&\n            this.root.contains(document.activeElement);\n      },\n      isRootFocused: () => document.activeElement === this.root,\n      listItemAtIndexHasClass: (index, className) =>\n          this.listElements[index].classList.contains(\n              this.classNameMap[className]),\n      notifyAction: (index) => {\n        this.emit<MDCListActionEventDetail>(\n            strings.ACTION_EVENT, {index}, /** shouldBubble */ true);\n      },\n      removeClassForElementIndex: (index, className) => {\n        const element = this.listElements[index];\n        if (element) {\n          element.classList.remove(this.classNameMap[className]);\n        }\n      },\n      setAttributeForElementIndex: (index, attr, value) => {\n        const element = this.listElements[index];\n        if (element) {\n          element.setAttribute(attr, value);\n        }\n      },\n      setCheckedCheckboxOrRadioAtIndex: (index, isChecked) => {\n        const listItem = this.listElements[index];\n        const toggleEl = listItem.querySelector<HTMLInputElement>(\n            strings.CHECKBOX_RADIO_SELECTOR);\n        toggleEl!.checked = isChecked;\n\n        const event = document.createEvent('Event');\n        event.initEvent('change', true, true);\n        toggleEl!.dispatchEvent(event);\n      },\n      setTabIndexForListItemChildren: (listItemIndex, tabIndexValue) => {\n        const element = this.listElements[listItemIndex];\n        const selector = strings.CHILD_ELEMENTS_TO_TOGGLE_TABINDEX;\n        Array.prototype.forEach.call(\n            element.querySelectorAll(selector), (el: Element) => {\n              el.setAttribute('tabindex', tabIndexValue);\n            });\n      },\n    };\n    return new MDCListFoundation(adapter);\n  }\n\n  /**\n   * Ensures that at least one item is focusable if the list is interactive and\n   * doesn't specify a suitable tabindex.\n   */\n  private ensureFocusable() {\n    if (this.isEvolutionEnabled && this.isInteractive) {\n      if (!this.root.querySelector(`.${\n              this.classNameMap[cssClasses.LIST_ITEM_CLASS]}[tabindex=\"0\"]`)) {\n        const index = this.initialFocusIndex();\n        if (index !== -1) {\n          (this.listElements[index] as HTMLElement).tabIndex = 0;\n        }\n      }\n    }\n  }\n\n  private initialFocusIndex(): number {\n    if (this.selectedIndex instanceof Array && this.selectedIndex.length > 0) {\n      return this.selectedIndex[0];\n    }\n    if (typeof this.selectedIndex === 'number' &&\n        this.selectedIndex !== numbers.UNSET_INDEX) {\n      return this.selectedIndex;\n    }\n    const el = this.root.querySelector(\n        `.${this.classNameMap[cssClasses.LIST_ITEM_CLASS]}:not(.${\n            this.classNameMap[cssClasses.LIST_ITEM_DISABLED_CLASS]})`);\n    if (el === null) {\n      return -1;\n    }\n    return this.getListItemIndex(el);\n  }\n\n  /**\n   * Used to figure out which list item this event is targetting. Or returns -1\n   * if there is no list item\n   */\n  private getListItemIndex(el: Element) {\n    const nearestParent = closest(\n        el,\n        `.${this.classNameMap[cssClasses.LIST_ITEM_CLASS]}, .${\n            this.classNameMap[cssClasses.ROOT]}`);\n\n    // Get the index of the element if it is a list item.\n    if (nearestParent &&\n        matches(\n            nearestParent,\n            `.${this.classNameMap[cssClasses.LIST_ITEM_CLASS]}`)) {\n      return this.listElements.indexOf(nearestParent);\n    }\n\n    return -1;\n  }\n\n  /**\n   * Used to figure out which element was clicked before sending the event to\n   * the foundation.\n   */\n  private handleFocusInEvent(evt: FocusEvent) {\n    const index = this.getListItemIndex(evt.target as Element);\n    this.foundation.handleFocusIn(index);\n  }\n\n  /**\n   * Used to figure out which element was clicked before sending the event to\n   * the foundation.\n   */\n  private handleFocusOutEvent(evt: FocusEvent) {\n    const index = this.getListItemIndex(evt.target as Element);\n    this.foundation.handleFocusOut(index);\n  }\n\n  /**\n   * Used to figure out which element was focused when keydown event occurred\n   * before sending the event to the foundation.\n   */\n  private handleKeydownEvent(evt: KeyboardEvent) {\n    const index = this.getListItemIndex(evt.target as Element);\n    const target = evt.target as Element;\n    this.foundation.handleKeydown(\n        evt,\n        target.classList.contains(\n            this.classNameMap[cssClasses.LIST_ITEM_CLASS]),\n        index);\n  }\n\n  /**\n   * Used to figure out which element was clicked before sending the event to\n   * the foundation.\n   */\n  private handleClickEvent(evt: MouseEvent) {\n    const index = this.getListItemIndex(evt.target as Element);\n    const target = evt.target as Element;\n    // Toggle the checkbox only if it's not the target of the event, or the\n    // checkbox will have 2 change events.\n    const toggleCheckbox = !matches(target, strings.CHECKBOX_RADIO_SELECTOR);\n    this.foundation.handleClick(index, toggleCheckbox);\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  LIST_ITEM_ACTIVATED_CLASS: 'mdc-list-item--activated',\n  LIST_ITEM_CLASS: 'mdc-list-item',\n  LIST_ITEM_DISABLED_CLASS: 'mdc-list-item--disabled',\n  LIST_ITEM_SELECTED_CLASS: 'mdc-list-item--selected',\n  LIST_ITEM_TEXT_CLASS: 'mdc-list-item__text',\n  LIST_ITEM_PRIMARY_TEXT_CLASS: 'mdc-list-item__primary-text',\n  ROOT: 'mdc-list',\n};\n\nconst evolutionClassNameMap = {\n  [`${cssClasses.LIST_ITEM_ACTIVATED_CLASS}`]: 'mdc-list-item--activated',\n  [`${cssClasses.LIST_ITEM_CLASS}`]: 'mdc-list-item',\n  [`${cssClasses.LIST_ITEM_DISABLED_CLASS}`]: 'mdc-list-item--disabled',\n  [`${cssClasses.LIST_ITEM_SELECTED_CLASS}`]: 'mdc-list-item--selected',\n  [`${cssClasses.LIST_ITEM_PRIMARY_TEXT_CLASS}`]: 'mdc-list-item__primary-text',\n  [`${cssClasses.ROOT}`]: 'mdc-list',\n};\n\nconst deprecatedClassNameMap = {\n  [`${cssClasses.LIST_ITEM_ACTIVATED_CLASS}`]:\n      'mdc-deprecated-list-item--activated',\n  [`${cssClasses.LIST_ITEM_CLASS}`]: 'mdc-deprecated-list-item',\n  [`${cssClasses.LIST_ITEM_DISABLED_CLASS}`]:\n      'mdc-deprecated-list-item--disabled',\n  [`${cssClasses.LIST_ITEM_SELECTED_CLASS}`]:\n      'mdc-deprecated-list-item--selected',\n  [`${cssClasses.LIST_ITEM_TEXT_CLASS}`]: 'mdc-deprecated-list-item__text',\n  [`${cssClasses.LIST_ITEM_PRIMARY_TEXT_CLASS}`]:\n      'mdc-deprecated-list-item__primary-text',\n  [`${cssClasses.ROOT}`]: 'mdc-deprecated-list',\n};\n\nconst strings = {\n  ACTION_EVENT: 'MDCList:action',\n  ARIA_CHECKED: 'aria-checked',\n  ARIA_CHECKED_CHECKBOX_SELECTOR: '[role=\"checkbox\"][aria-checked=\"true\"]',\n  ARIA_CHECKED_RADIO_SELECTOR: '[role=\"radio\"][aria-checked=\"true\"]',\n  ARIA_CURRENT: 'aria-current',\n  ARIA_DISABLED: 'aria-disabled',\n  ARIA_ORIENTATION: 'aria-orientation',\n  ARIA_ORIENTATION_HORIZONTAL: 'horizontal',\n  ARIA_ROLE_CHECKBOX_SELECTOR: '[role=\"checkbox\"]',\n  ARIA_SELECTED: 'aria-selected',\n  ARIA_INTERACTIVE_ROLES_SELECTOR: '[role=\"listbox\"], [role=\"menu\"]',\n  ARIA_MULTI_SELECTABLE_SELECTOR: '[aria-multiselectable=\"true\"]',\n  CHECKBOX_RADIO_SELECTOR: 'input[type=\"checkbox\"], input[type=\"radio\"]',\n  CHECKBOX_SELECTOR: 'input[type=\"checkbox\"]',\n  CHILD_ELEMENTS_TO_TOGGLE_TABINDEX: `\n    .${cssClasses.LIST_ITEM_CLASS} button:not(:disabled),\n    .${cssClasses.LIST_ITEM_CLASS} a,\n    .${\n      deprecatedClassNameMap[cssClasses.LIST_ITEM_CLASS]} button:not(:disabled),\n    .${deprecatedClassNameMap[cssClasses.LIST_ITEM_CLASS]} a\n  `,\n  DEPRECATED_SELECTOR: '.mdc-deprecated-list',\n  FOCUSABLE_CHILD_ELEMENTS: `\n    .${cssClasses.LIST_ITEM_CLASS} button:not(:disabled),\n    .${cssClasses.LIST_ITEM_CLASS} a,\n    .${cssClasses.LIST_ITEM_CLASS} input[type=\"radio\"]:not(:disabled),\n    .${cssClasses.LIST_ITEM_CLASS} input[type=\"checkbox\"]:not(:disabled),\n    .${\n      deprecatedClassNameMap[cssClasses.LIST_ITEM_CLASS]} button:not(:disabled),\n    .${deprecatedClassNameMap[cssClasses.LIST_ITEM_CLASS]} a,\n    .${\n      deprecatedClassNameMap\n          [cssClasses.LIST_ITEM_CLASS]} input[type=\"radio\"]:not(:disabled),\n    .${\n      deprecatedClassNameMap\n          [cssClasses.LIST_ITEM_CLASS]} input[type=\"checkbox\"]:not(:disabled)\n  `,\n  RADIO_SELECTOR: 'input[type=\"radio\"]',\n  SELECTED_ITEM_SELECTOR: '[aria-selected=\"true\"], [aria-current=\"true\"]',\n};\n\nconst numbers = {\n  UNSET_INDEX: -1,\n  TYPEAHEAD_BUFFER_CLEAR_TIMEOUT_MS: 300\n};\n\nconst evolutionAttribute = 'evolution';\n\nexport {\n  strings,\n  cssClasses,\n  numbers,\n  deprecatedClassNameMap,\n  evolutionAttribute,\n  evolutionClassNameMap\n};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst ELEMENTS_KEY_ALLOWED_IN = ['input', 'button', 'textarea', 'select'];\n\n/**\n * Ensures that preventDefault is only called if the containing element\n * doesn't consume the event, and it will cause an unintended scroll.\n *\n * @param evt keyboard event to be prevented.\n */\nexport const preventDefaultEvent = (evt: KeyboardEvent) => {\n  const target = evt.target as Element;\n  if (!target) {\n    return;\n  }\n  const tagName = `${target.tagName}`.toLowerCase();\n  if (ELEMENTS_KEY_ALLOWED_IN.indexOf(tagName) === -1) {\n    evt.preventDefault();\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {normalizeKey} from '@material/dom/keyboard';\n\nimport {MDCListAdapter} from './adapter';\nimport {cssClasses, numbers, strings} from './constants';\nimport {preventDefaultEvent} from './events';\nimport * as typeahead from './typeahead';\nimport {MDCListIndex, MDCListTextAndIndex} from './types';\n\nfunction isNumberArray(selectedIndex: MDCListIndex): selectedIndex is number[] {\n  return selectedIndex instanceof Array;\n}\n\nexport class MDCListFoundation extends MDCFoundation<MDCListAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get defaultAdapter(): MDCListAdapter {\n    return {\n      addClassForElementIndex: () => undefined,\n      focusItemAtIndex: () => undefined,\n      getAttributeForElementIndex: () => null,\n      getFocusedElementIndex: () => 0,\n      getListItemCount: () => 0,\n      hasCheckboxAtIndex: () => false,\n      hasRadioAtIndex: () => false,\n      isCheckboxCheckedAtIndex: () => false,\n      isFocusInsideList: () => false,\n      isRootFocused: () => false,\n      listItemAtIndexHasClass: () => false,\n      notifyAction: () => undefined,\n      removeClassForElementIndex: () => undefined,\n      setAttributeForElementIndex: () => undefined,\n      setCheckedCheckboxOrRadioAtIndex: () => undefined,\n      setTabIndexForListItemChildren: () => undefined,\n      getPrimaryTextAtIndex: () => '',\n    };\n  }\n\n  private wrapFocus = false;\n  private isVertical = true;\n  private isSingleSelectionList = false;\n  private selectedIndex: MDCListIndex = numbers.UNSET_INDEX;\n  private focusedItemIndex = numbers.UNSET_INDEX;\n  private useActivatedClass = false;\n  private useSelectedAttr = false;\n  private ariaCurrentAttrValue: string|null = null;\n  private isCheckboxList = false;\n  private isRadioList = false;\n\n  private hasTypeahead = false;\n  // Transiently holds current typeahead prefix from user.\n  private readonly typeaheadState = typeahead.initState();\n  private sortedIndexByFirstChar = new Map<string, MDCListTextAndIndex[]>();\n\n  constructor(adapter?: Partial<MDCListAdapter>) {\n    super({...MDCListFoundation.defaultAdapter, ...adapter});\n  }\n\n  layout() {\n    if (this.adapter.getListItemCount() === 0) {\n      return;\n    }\n\n    // TODO(b/172274142): consider all items when determining the list's type.\n    if (this.adapter.hasCheckboxAtIndex(0)) {\n      this.isCheckboxList = true;\n    } else if (this.adapter.hasRadioAtIndex(0)) {\n      this.isRadioList = true;\n    } else {\n      this.maybeInitializeSingleSelection();\n    }\n\n    if (this.hasTypeahead) {\n      this.sortedIndexByFirstChar = this.typeaheadInitSortedIndex();\n    }\n  }\n\n  /** Returns the index of the item that was last focused. */\n  getFocusedItemIndex() {\n    return this.focusedItemIndex;\n  }\n\n  /** Toggles focus wrapping with keyboard navigation. */\n  setWrapFocus(value: boolean) {\n    this.wrapFocus = value;\n  }\n\n  /**\n   * Toggles orientation direction for keyboard navigation (true for vertical,\n   * false for horizontal).\n   */\n  setVerticalOrientation(value: boolean) {\n    this.isVertical = value;\n  }\n\n  /** Toggles single-selection behavior. */\n  setSingleSelection(value: boolean) {\n    this.isSingleSelectionList = value;\n    if (value) {\n      this.maybeInitializeSingleSelection();\n      this.selectedIndex = this.getSelectedIndexFromDOM();\n    }\n  }\n\n  /**\n   * Automatically determines whether the list is single selection list. If so,\n   * initializes the internal state to match the selected item.\n   */\n  private maybeInitializeSingleSelection() {\n    const selectedItemIndex = this.getSelectedIndexFromDOM();\n    if (selectedItemIndex === numbers.UNSET_INDEX) return;\n\n    const hasActivatedClass = this.adapter.listItemAtIndexHasClass(\n        selectedItemIndex, cssClasses.LIST_ITEM_ACTIVATED_CLASS);\n    if (hasActivatedClass) {\n      this.setUseActivatedClass(true);\n    }\n    this.isSingleSelectionList = true;\n    this.selectedIndex = selectedItemIndex;\n  }\n\n  /** @return Index of the first selected item based on the DOM state. */\n  private getSelectedIndexFromDOM() {\n    let selectedIndex = numbers.UNSET_INDEX;\n    const listItemsCount = this.adapter.getListItemCount();\n    for (let i = 0; i < listItemsCount; i++) {\n      const hasSelectedClass = this.adapter.listItemAtIndexHasClass(\n          i, cssClasses.LIST_ITEM_SELECTED_CLASS);\n      const hasActivatedClass = this.adapter.listItemAtIndexHasClass(\n          i, cssClasses.LIST_ITEM_ACTIVATED_CLASS);\n      if (!(hasSelectedClass || hasActivatedClass)) {\n        continue;\n      }\n\n      selectedIndex = i;\n      break;\n    }\n\n    return selectedIndex;\n  }\n\n  /**\n   * Sets whether typeahead is enabled on the list.\n   * @param hasTypeahead Whether typeahead is enabled.\n   */\n  setHasTypeahead(hasTypeahead: boolean) {\n    this.hasTypeahead = hasTypeahead;\n    if (hasTypeahead) {\n      this.sortedIndexByFirstChar = this.typeaheadInitSortedIndex();\n    }\n  }\n\n  /**\n   * @return Whether typeahead is currently matching a user-specified prefix.\n   */\n  isTypeaheadInProgress(): boolean {\n    return this.hasTypeahead &&\n        typeahead.isTypingInProgress(this.typeaheadState);\n  }\n\n  /** Toggle use of the \"activated\" CSS class. */\n  setUseActivatedClass(useActivated: boolean) {\n    this.useActivatedClass = useActivated;\n  }\n\n  /**\n   * Toggles use of the selected attribute (true for aria-selected, false for\n   * aria-checked).\n   */\n  setUseSelectedAttribute(useSelected: boolean) {\n    this.useSelectedAttr = useSelected;\n  }\n\n  getSelectedIndex(): MDCListIndex {\n    return this.selectedIndex;\n  }\n\n  setSelectedIndex(index: MDCListIndex, {forceUpdate}: {forceUpdate?:\n                                                            boolean} = {}) {\n    if (!this.isIndexValid(index)) {\n      return;\n    }\n\n    if (this.isCheckboxList) {\n      this.setCheckboxAtIndex(index as number[]);\n    } else if (this.isRadioList) {\n      this.setRadioAtIndex(index as number);\n    } else {\n      this.setSingleSelectionAtIndex(index as number, {forceUpdate});\n    }\n  }\n\n  /**\n   * Focus in handler for the list items.\n   */\n  handleFocusIn(listItemIndex: number) {\n    if (listItemIndex >= 0) {\n      this.focusedItemIndex = listItemIndex;\n      this.adapter.setAttributeForElementIndex(listItemIndex, 'tabindex', '0');\n      this.adapter.setTabIndexForListItemChildren(listItemIndex, '0');\n    }\n  }\n\n  /**\n   * Focus out handler for the list items.\n   */\n  handleFocusOut(listItemIndex: number) {\n    if (listItemIndex >= 0) {\n      this.adapter.setAttributeForElementIndex(listItemIndex, 'tabindex', '-1');\n      this.adapter.setTabIndexForListItemChildren(listItemIndex, '-1');\n    }\n\n    /**\n     * Between Focusout & Focusin some browsers do not have focus on any\n     * element. Setting a delay to wait till the focus is moved to next element.\n     */\n    setTimeout(() => {\n      if (!this.adapter.isFocusInsideList()) {\n        this.setTabindexToFirstSelectedOrFocusedItem();\n      }\n    }, 0);\n  }\n\n  /**\n   * Key handler for the list.\n   */\n  handleKeydown(\n      event: KeyboardEvent, isRootListItem: boolean, listItemIndex: number) {\n    const isArrowLeft = normalizeKey(event) === 'ArrowLeft';\n    const isArrowUp = normalizeKey(event) === 'ArrowUp';\n    const isArrowRight = normalizeKey(event) === 'ArrowRight';\n    const isArrowDown = normalizeKey(event) === 'ArrowDown';\n    const isHome = normalizeKey(event) === 'Home';\n    const isEnd = normalizeKey(event) === 'End';\n    const isEnter = normalizeKey(event) === 'Enter';\n    const isSpace = normalizeKey(event) === 'Spacebar';\n\n    // Have to check both upper and lower case, because having caps lock on\n    // affects the value.\n    const isLetterA = event.key === 'A' || event.key === 'a';\n\n    if (this.adapter.isRootFocused()) {\n      if (isArrowUp || isEnd) {\n        event.preventDefault();\n        this.focusLastElement();\n      } else if (isArrowDown || isHome) {\n        event.preventDefault();\n        this.focusFirstElement();\n      }\n\n      if (this.hasTypeahead) {\n        const handleKeydownOpts: typeahead.HandleKeydownOpts = {\n          event,\n          focusItemAtIndex: (index) => {\n            this.focusItemAtIndex(index);\n          },\n          focusedItemIndex: -1,\n          isTargetListItem: isRootListItem,\n          sortedIndexByFirstChar: this.sortedIndexByFirstChar,\n          isItemAtIndexDisabled: (index) =>\n              this.adapter.listItemAtIndexHasClass(\n                  index, cssClasses.LIST_ITEM_DISABLED_CLASS),\n        };\n\n        typeahead.handleKeydown(handleKeydownOpts, this.typeaheadState);\n      }\n\n      return;\n    }\n\n    let currentIndex = this.adapter.getFocusedElementIndex();\n    if (currentIndex === -1) {\n      currentIndex = listItemIndex;\n      if (currentIndex < 0) {\n        // If this event doesn't have a mdc-list-item ancestor from the\n        // current list (not from a sublist), return early.\n        return;\n      }\n    }\n\n    if ((this.isVertical && isArrowDown) ||\n        (!this.isVertical && isArrowRight)) {\n      preventDefaultEvent(event);\n      this.focusNextElement(currentIndex);\n    } else if (\n        (this.isVertical && isArrowUp) || (!this.isVertical && isArrowLeft)) {\n      preventDefaultEvent(event);\n      this.focusPrevElement(currentIndex);\n    } else if (isHome) {\n      preventDefaultEvent(event);\n      this.focusFirstElement();\n    } else if (isEnd) {\n      preventDefaultEvent(event);\n      this.focusLastElement();\n    } else if (isLetterA && event.ctrlKey && this.isCheckboxList) {\n      event.preventDefault();\n      this.toggleAll(\n          this.selectedIndex === numbers.UNSET_INDEX ?\n              [] :\n              this.selectedIndex as number[]);\n    } else if (isEnter || isSpace) {\n      if (isRootListItem) {\n        // Return early if enter key is pressed on anchor element which triggers\n        // synthetic MouseEvent event.\n        const target = event.target as Element | null;\n        if (target && target.tagName === 'A' && isEnter) {\n          return;\n        }\n        preventDefaultEvent(event);\n\n        if (this.adapter.listItemAtIndexHasClass(\n                currentIndex, cssClasses.LIST_ITEM_DISABLED_CLASS)) {\n          return;\n        }\n\n        if (!this.isTypeaheadInProgress()) {\n          if (this.isSelectableList()) {\n            this.setSelectedIndexOnAction(currentIndex);\n          }\n          this.adapter.notifyAction(currentIndex);\n        }\n      }\n    }\n\n    if (this.hasTypeahead) {\n      const handleKeydownOpts: typeahead.HandleKeydownOpts = {\n        event,\n        focusItemAtIndex: (index) => {\n          this.focusItemAtIndex(index)\n        },\n        focusedItemIndex: this.focusedItemIndex,\n        isTargetListItem: isRootListItem,\n        sortedIndexByFirstChar: this.sortedIndexByFirstChar,\n        isItemAtIndexDisabled: (index) => this.adapter.listItemAtIndexHasClass(\n            index, cssClasses.LIST_ITEM_DISABLED_CLASS),\n      };\n\n      typeahead.handleKeydown(handleKeydownOpts, this.typeaheadState);\n    }\n  }\n\n  /**\n   * Click handler for the list.\n   */\n  handleClick(index: number, toggleCheckbox: boolean) {\n    if (index === numbers.UNSET_INDEX) {\n      return;\n    }\n\n    if (this.adapter.listItemAtIndexHasClass(\n            index, cssClasses.LIST_ITEM_DISABLED_CLASS)) {\n      return;\n    }\n    if (this.isSelectableList()) {\n      this.setSelectedIndexOnAction(index, toggleCheckbox);\n    }\n\n    this.adapter.notifyAction(index);\n  }\n\n  /**\n   * Focuses the next element on the list.\n   */\n  focusNextElement(index: number) {\n    const count = this.adapter.getListItemCount();\n    let nextIndex = index + 1;\n    if (nextIndex >= count) {\n      if (this.wrapFocus) {\n        nextIndex = 0;\n      } else {\n        // Return early because last item is already focused.\n        return index;\n      }\n    }\n    this.focusItemAtIndex(nextIndex);\n\n    return nextIndex;\n  }\n\n  /**\n   * Focuses the previous element on the list.\n   */\n  focusPrevElement(index: number) {\n    let prevIndex = index - 1;\n    if (prevIndex < 0) {\n      if (this.wrapFocus) {\n        prevIndex = this.adapter.getListItemCount() - 1;\n      } else {\n        // Return early because first item is already focused.\n        return index;\n      }\n    }\n    this.focusItemAtIndex(prevIndex);\n    return prevIndex;\n  }\n\n  focusFirstElement() {\n    this.focusItemAtIndex(0);\n    return 0;\n  }\n\n  focusLastElement() {\n    const lastIndex = this.adapter.getListItemCount() - 1;\n    this.focusItemAtIndex(lastIndex);\n    return lastIndex;\n  }\n\n  focusInitialElement() {\n    const initialIndex = this.getFirstSelectedOrFocusedItemIndex();\n    this.focusItemAtIndex(initialIndex);\n    return initialIndex;\n  }\n\n  /**\n   * @param itemIndex Index of the list item\n   * @param isEnabled Sets the list item to enabled or disabled.\n   */\n  setEnabled(itemIndex: number, isEnabled: boolean): void {\n    if (!this.isIndexValid(itemIndex)) {\n      return;\n    }\n\n    if (isEnabled) {\n      this.adapter.removeClassForElementIndex(\n          itemIndex, cssClasses.LIST_ITEM_DISABLED_CLASS);\n      this.adapter.setAttributeForElementIndex(\n          itemIndex, strings.ARIA_DISABLED, 'false');\n    } else {\n      this.adapter.addClassForElementIndex(\n          itemIndex, cssClasses.LIST_ITEM_DISABLED_CLASS);\n      this.adapter.setAttributeForElementIndex(\n          itemIndex, strings.ARIA_DISABLED, 'true');\n    }\n  }\n\n  private setSingleSelectionAtIndex(index: number, {forceUpdate}: {\n    forceUpdate?: boolean\n  } = {}) {\n    if (this.selectedIndex === index && !forceUpdate) {\n      return;\n    }\n\n    let selectedClassName = cssClasses.LIST_ITEM_SELECTED_CLASS;\n    if (this.useActivatedClass) {\n      selectedClassName = cssClasses.LIST_ITEM_ACTIVATED_CLASS;\n    }\n\n    if (this.selectedIndex !== numbers.UNSET_INDEX) {\n      this.adapter.removeClassForElementIndex(\n          this.selectedIndex as number, selectedClassName);\n    }\n\n    this.setAriaForSingleSelectionAtIndex(index);\n    this.setTabindexAtIndex(index);\n    if (index !== numbers.UNSET_INDEX) {\n      this.adapter.addClassForElementIndex(index, selectedClassName);\n    }\n\n    this.selectedIndex = index;\n  }\n\n  /**\n   * Sets aria attribute for single selection at given index.\n   */\n  private setAriaForSingleSelectionAtIndex(index: number) {\n    // Detect the presence of aria-current and get the value only during list\n    // initialization when it is in unset state.\n    if (this.selectedIndex === numbers.UNSET_INDEX) {\n      this.ariaCurrentAttrValue =\n          this.adapter.getAttributeForElementIndex(index, strings.ARIA_CURRENT);\n    }\n\n    const isAriaCurrent = this.ariaCurrentAttrValue !== null;\n    const ariaAttribute =\n        isAriaCurrent ? strings.ARIA_CURRENT : strings.ARIA_SELECTED;\n\n    if (this.selectedIndex !== numbers.UNSET_INDEX) {\n      this.adapter.setAttributeForElementIndex(\n          this.selectedIndex as number, ariaAttribute, 'false');\n    }\n\n    if (index !== numbers.UNSET_INDEX) {\n      const ariaAttributeValue =\n          isAriaCurrent ? this.ariaCurrentAttrValue : 'true';\n      this.adapter.setAttributeForElementIndex(\n          index, ariaAttribute, ariaAttributeValue as string);\n    }\n  }\n\n  /**\n   * Returns the attribute to use for indicating selection status.\n   */\n  private getSelectionAttribute(): string {\n    return this.useSelectedAttr ? strings.ARIA_SELECTED : strings.ARIA_CHECKED;\n  }\n\n  /**\n   * Toggles radio at give index. Radio doesn't change the checked state if it\n   * is already checked.\n   */\n  private setRadioAtIndex(index: number) {\n    const selectionAttribute = this.getSelectionAttribute();\n    this.adapter.setCheckedCheckboxOrRadioAtIndex(index, true);\n\n    if (this.selectedIndex !== numbers.UNSET_INDEX) {\n      this.adapter.setAttributeForElementIndex(\n          this.selectedIndex as number, selectionAttribute, 'false');\n    }\n\n    this.adapter.setAttributeForElementIndex(index, selectionAttribute, 'true');\n\n    this.selectedIndex = index;\n  }\n\n  private setCheckboxAtIndex(index: number[]) {\n    const selectionAttribute = this.getSelectionAttribute();\n    for (let i = 0; i < this.adapter.getListItemCount(); i++) {\n      let isChecked = false;\n      if (index.indexOf(i) >= 0) {\n        isChecked = true;\n      }\n\n      this.adapter.setCheckedCheckboxOrRadioAtIndex(i, isChecked);\n      this.adapter.setAttributeForElementIndex(\n          i, selectionAttribute, isChecked ? 'true' : 'false');\n    }\n\n    this.selectedIndex = index;\n  }\n\n  private setTabindexAtIndex(index: number) {\n    if (this.focusedItemIndex === numbers.UNSET_INDEX && index !== 0) {\n      // If some list item was selected set first list item's tabindex to -1.\n      // Generally, tabindex is set to 0 on first list item of list that has no\n      // preselected items.\n      this.adapter.setAttributeForElementIndex(0, 'tabindex', '-1');\n    } else if (this.focusedItemIndex >= 0 && this.focusedItemIndex !== index) {\n      this.adapter.setAttributeForElementIndex(\n          this.focusedItemIndex, 'tabindex', '-1');\n    }\n\n    // Set the previous selection's tabindex to -1. We need this because\n    // in selection menus that are not visible, programmatically setting an\n    // option will not change focus but will change where tabindex should be 0.\n    if (!(this.selectedIndex instanceof Array) &&\n        this.selectedIndex !== index) {\n      this.adapter.setAttributeForElementIndex(\n          this.selectedIndex, 'tabindex', '-1');\n    }\n\n    if (index !== numbers.UNSET_INDEX) {\n      this.adapter.setAttributeForElementIndex(index, 'tabindex', '0');\n    }\n  }\n\n  /**\n   * @return Return true if it is single selectin list, checkbox list or radio\n   *     list.\n   */\n  private isSelectableList() {\n    return this.isSingleSelectionList || this.isCheckboxList ||\n        this.isRadioList;\n  }\n\n  private setTabindexToFirstSelectedOrFocusedItem() {\n    const targetIndex = this.getFirstSelectedOrFocusedItemIndex();\n    this.setTabindexAtIndex(targetIndex);\n  }\n\n  private getFirstSelectedOrFocusedItemIndex(): number {\n    // Action lists retain focus on the most recently focused item.\n    if (!this.isSelectableList()) {\n      return Math.max(this.focusedItemIndex, 0);\n    }\n\n    // Single-selection lists focus the selected item.\n    if (typeof this.selectedIndex === 'number' &&\n        this.selectedIndex !== numbers.UNSET_INDEX) {\n      return this.selectedIndex;\n    }\n\n    // Multiple-selection lists focus the first selected item.\n    if (isNumberArray(this.selectedIndex) && this.selectedIndex.length > 0) {\n      return this.selectedIndex.reduce(\n          (minIndex, currentIndex) => Math.min(minIndex, currentIndex));\n    }\n\n    // Selection lists without a selection focus the first item.\n    return 0;\n  }\n\n  private isIndexValid(index: MDCListIndex) {\n    if (index instanceof Array) {\n      if (!this.isCheckboxList) {\n        throw new Error(\n            'MDCListFoundation: Array of index is only supported for checkbox based list');\n      }\n\n      if (index.length === 0) {\n        return true;\n      } else {\n        return index.some((i) => this.isIndexInRange(i));\n      }\n    } else if (typeof index === 'number') {\n      if (this.isCheckboxList) {\n        throw new Error(\n            `MDCListFoundation: Expected array of index for checkbox based list but got number: ${\n                index}`);\n      }\n      return this.isIndexInRange(index) ||\n          this.isSingleSelectionList && index === numbers.UNSET_INDEX;\n    } else {\n      return false;\n    }\n  }\n\n  private isIndexInRange(index: number) {\n    const listSize = this.adapter.getListItemCount();\n    return index >= 0 && index < listSize;\n  }\n\n  /**\n   * Sets selected index on user action, toggles checkbox / radio based on\n   * toggleCheckbox value. User interaction should not toggle list item(s) when\n   * disabled.\n   */\n  private setSelectedIndexOnAction(index: number, toggleCheckbox = true) {\n    if (this.isCheckboxList) {\n      this.toggleCheckboxAtIndex(index, toggleCheckbox);\n    } else {\n      this.setSelectedIndex(index);\n    }\n  }\n\n  private toggleCheckboxAtIndex(index: number, toggleCheckbox: boolean) {\n    const selectionAttribute = this.getSelectionAttribute();\n    let isChecked = this.adapter.isCheckboxCheckedAtIndex(index);\n\n    if (toggleCheckbox) {\n      isChecked = !isChecked;\n      this.adapter.setCheckedCheckboxOrRadioAtIndex(index, isChecked);\n    }\n\n    this.adapter.setAttributeForElementIndex(\n        index, selectionAttribute, isChecked ? 'true' : 'false');\n\n    // If none of the checkbox items are selected and selectedIndex is not\n    // initialized then provide a default value.\n    let selectedIndexes = this.selectedIndex === numbers.UNSET_INDEX ?\n        [] :\n        (this.selectedIndex as number[]).slice();\n\n    if (isChecked) {\n      selectedIndexes.push(index);\n    } else {\n      selectedIndexes = selectedIndexes.filter((i) => i !== index);\n    }\n\n    this.selectedIndex = selectedIndexes;\n  }\n\n  private focusItemAtIndex(index: number) {\n    this.adapter.focusItemAtIndex(index);\n    this.focusedItemIndex = index;\n  }\n\n  private toggleAll(currentlySelectedIndexes: number[]) {\n    const count = this.adapter.getListItemCount();\n\n    // If all items are selected, deselect everything.\n    if (currentlySelectedIndexes.length === count) {\n      this.setCheckboxAtIndex([]);\n    } else {\n      // Otherwise select all enabled options.\n      const allIndexes: number[] = [];\n      for (let i = 0; i < count; i++) {\n        if (!this.adapter.listItemAtIndexHasClass(\n                i, cssClasses.LIST_ITEM_DISABLED_CLASS) ||\n            currentlySelectedIndexes.indexOf(i) > -1) {\n          allIndexes.push(i);\n        }\n      }\n      this.setCheckboxAtIndex(allIndexes);\n    }\n  }\n\n  /**\n   * Given the next desired character from the user, adds it to the typeahead\n   * buffer. Then, attempts to find the next option matching the buffer. Wraps\n   * around if at the end of options.\n   *\n   * @param nextChar The next character to add to the prefix buffer.\n   * @param startingIndex The index from which to start matching. Only relevant\n   *     when starting a new match sequence. To start a new match sequence,\n   *     clear the buffer using `clearTypeaheadBuffer`, or wait for the buffer\n   *     to clear after a set interval defined in list foundation. Defaults to\n   *     the currently focused index.\n   * @return The index of the matched item, or -1 if no match.\n   */\n  typeaheadMatchItem(\n      nextChar: string, startingIndex?: number, skipFocus = false) {\n    const opts: typeahead.TypeaheadMatchItemOpts = {\n      focusItemAtIndex: (index) => {\n        this.focusItemAtIndex(index);\n      },\n      focusedItemIndex: startingIndex ? startingIndex : this.focusedItemIndex,\n      nextChar,\n      sortedIndexByFirstChar: this.sortedIndexByFirstChar,\n      skipFocus,\n      isItemAtIndexDisabled: (index) => this.adapter.listItemAtIndexHasClass(\n          index, cssClasses.LIST_ITEM_DISABLED_CLASS)\n    };\n    return typeahead.matchItem(opts, this.typeaheadState);\n  }\n\n  /**\n   * Initializes the MDCListTextAndIndex data structure by indexing the current\n   * list items by primary text.\n   *\n   * @return The primary texts of all the list items sorted by first character.\n   */\n  private typeaheadInitSortedIndex() {\n    return typeahead.initSortedIndex(\n        this.adapter.getListItemCount(), this.adapter.getPrimaryTextAtIndex);\n  }\n\n  /**\n   * Clears the typeahead buffer.\n   */\n  clearTypeaheadBuffer() {\n    typeahead.clearBuffer(this.typeaheadState);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCListFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {normalizeKey} from '@material/dom/keyboard';\n\nimport {numbers} from './constants';\nimport {preventDefaultEvent} from './events';\nimport {MDCListTextAndIndex} from './types';\n\n/**\n * State of a typeahead instance.\n */\nexport interface TypeaheadState {\n  typeaheadBuffer: string;\n  currentFirstChar: string;\n  sortedIndexCursor: number;\n  bufferClearTimeout: number;\n}\n\n/**\n * Initializes a state object for typeahead. Use the same reference for calls to\n * typeahead functions.\n *\n * @return The current state of the typeahead process. Each state reference\n *     represents a typeahead instance as the reference is typically mutated\n *     in-place.\n */\nexport function initState(): TypeaheadState {\n  const state: TypeaheadState = {\n    bufferClearTimeout: 0,\n    currentFirstChar: '',\n    sortedIndexCursor: 0,\n    typeaheadBuffer: '',\n  };\n  return state;\n}\n\n/**\n * Initializes typeahead state by indexing the current list items by primary\n * text into the sortedIndexByFirstChar data structure.\n *\n * @param listItemCount numer of items in the list\n * @param getPrimaryTextByItemIndex function that returns the primary text at a\n *     given index\n *\n * @return Map that maps the first character of the primary text to the full\n *     list text and it's index\n */\nexport function initSortedIndex(\n    listItemCount: number,\n    getPrimaryTextByItemIndex: (index: number) =>\n        string): Map<string, MDCListTextAndIndex[]> {\n  const sortedIndexByFirstChar = new Map<string, MDCListTextAndIndex[]>();\n\n  // Aggregate item text to index mapping\n  for (let i = 0; i < listItemCount; i++) {\n    const primaryText = getPrimaryTextByItemIndex(i).trim();\n    if (!primaryText) {\n      continue;\n    }\n\n    const firstChar = primaryText[0].toLowerCase();\n    if (!sortedIndexByFirstChar.has(firstChar)) {\n      sortedIndexByFirstChar.set(firstChar, []);\n    }\n    sortedIndexByFirstChar.get(firstChar)!.push(\n        {text: primaryText.toLowerCase(), index: i});\n  }\n\n  // Sort the mapping\n  // TODO(b/157162694): Investigate replacing forEach with Map.values()\n  sortedIndexByFirstChar.forEach((values) => {\n    values.sort((first: MDCListTextAndIndex, second: MDCListTextAndIndex) => {\n      return first.index - second.index;\n    });\n  });\n\n  return sortedIndexByFirstChar;\n}\n\n/**\n * Arguments for matchItem\n */\nexport interface TypeaheadMatchItemOpts {\n  focusItemAtIndex: (index: number) => void;\n  nextChar: string;\n  focusedItemIndex: number;\n  sortedIndexByFirstChar: Map<string, MDCListTextAndIndex[]>;\n  skipFocus: boolean;\n  isItemAtIndexDisabled: (index: number) => boolean;\n}\n\n/**\n * Given the next desired character from the user, it attempts to find the next\n * list option matching the buffer. Wraps around if at the end of options.\n *\n * @param opts Options and accessors\n *   - nextChar - the next character to match against items\n *   - sortedIndexByFirstChar - output of `initSortedIndex(...)`\n *   - focusedItemIndex - the index of the currently focused item\n *   - focusItemAtIndex - function that focuses a list item at given index\n *   - skipFocus - whether or not to focus the matched item\n *   - isItemAtIndexDisabled - function that determines whether an item at a\n *        given index is disabled\n * @param state The typeahead state instance. See `initState`.\n *\n * @return The index of the matched item, or -1 if no match.\n */\nexport function matchItem(\n    opts: TypeaheadMatchItemOpts, state: TypeaheadState): number {\n  const {\n    nextChar,\n    focusItemAtIndex,\n    sortedIndexByFirstChar,\n    focusedItemIndex,\n    skipFocus,\n    isItemAtIndexDisabled,\n  } = opts;\n\n  clearTimeout(state.bufferClearTimeout);\n\n  state.bufferClearTimeout = setTimeout(() => {\n    clearBuffer(state);\n  }, numbers.TYPEAHEAD_BUFFER_CLEAR_TIMEOUT_MS);\n\n  state.typeaheadBuffer = state.typeaheadBuffer + nextChar;\n\n  let index: number;\n  if (state.typeaheadBuffer.length === 1) {\n    index = matchFirstChar(\n        sortedIndexByFirstChar, focusedItemIndex, isItemAtIndexDisabled, state);\n  } else {\n    index = matchAllChars(sortedIndexByFirstChar, isItemAtIndexDisabled, state);\n  }\n\n  if (index !== -1 && !skipFocus) {\n    focusItemAtIndex(index);\n  }\n  return index;\n}\n\n/**\n * Matches the user's single input character in the buffer to the\n * next option that begins with such character. Wraps around if at\n * end of options. Returns -1 if no match is found.\n */\nfunction matchFirstChar(\n    sortedIndexByFirstChar: Map<string, MDCListTextAndIndex[]>,\n    focusedItemIndex: number, isItemAtIndexDisabled: (index: number) => boolean,\n    state: TypeaheadState): number {\n  const firstChar = state.typeaheadBuffer[0];\n  const itemsMatchingFirstChar = sortedIndexByFirstChar.get(firstChar);\n  if (!itemsMatchingFirstChar) {\n    return -1;\n  }\n\n  // Has the same firstChar been recently matched?\n  // Also, did starting index remain the same between key presses?\n  // If both hold true, simply increment index.\n  if (firstChar === state.currentFirstChar &&\n      itemsMatchingFirstChar[state.sortedIndexCursor].index ===\n          focusedItemIndex) {\n    state.sortedIndexCursor =\n        (state.sortedIndexCursor + 1) % itemsMatchingFirstChar.length;\n\n    const newIndex = itemsMatchingFirstChar[state.sortedIndexCursor].index;\n    if (!isItemAtIndexDisabled(newIndex)) {\n      return newIndex;\n    }\n  }\n\n  // If we're here, it means one of the following happened:\n  // - either firstChar or startingIndex has changed, invalidating the\n  // cursor.\n  // - The next item of typeahead is disabled, so we have to look further.\n  state.currentFirstChar = firstChar;\n\n  let newCursorPosition = -1;\n  let cursorPosition;\n  // Find the first non-disabled item as a fallback.\n  for (cursorPosition = 0; cursorPosition < itemsMatchingFirstChar.length;\n       cursorPosition++) {\n    if (!isItemAtIndexDisabled(itemsMatchingFirstChar[cursorPosition].index)) {\n      newCursorPosition = cursorPosition;\n      break;\n    }\n  }\n\n  // Advance cursor to first item matching the firstChar that is positioned\n  // after starting item. Cursor is unchanged from fallback if there's no\n  // such item.\n  for (; cursorPosition < itemsMatchingFirstChar.length; cursorPosition++) {\n    if (itemsMatchingFirstChar[cursorPosition].index > focusedItemIndex &&\n        !isItemAtIndexDisabled(itemsMatchingFirstChar[cursorPosition].index)) {\n      newCursorPosition = cursorPosition;\n      break;\n    }\n  }\n\n  if (newCursorPosition !== -1) {\n    state.sortedIndexCursor = newCursorPosition;\n    return itemsMatchingFirstChar[state.sortedIndexCursor].index;\n  }\n\n  return -1;\n}\n\n/**\n * Attempts to find the next item that matches all of the typeahead buffer.\n * Wraps around if at end of options. Returns -1 if no match is found.\n */\nfunction matchAllChars(\n    sortedIndexByFirstChar: Map<string, MDCListTextAndIndex[]>,\n    isItemAtIndexDisabled: (index: number) => boolean,\n    state: TypeaheadState): number {\n  const firstChar = state.typeaheadBuffer[0];\n  const itemsMatchingFirstChar = sortedIndexByFirstChar.get(firstChar);\n  if (!itemsMatchingFirstChar) {\n    return -1;\n  }\n\n  // Do nothing if text already matches\n  const startingItem = itemsMatchingFirstChar[state.sortedIndexCursor];\n  if (startingItem.text.lastIndexOf(state.typeaheadBuffer, 0) === 0 &&\n      !isItemAtIndexDisabled(startingItem.index)) {\n    return startingItem.index;\n  }\n\n  // Find next item that matches completely; if no match, we'll eventually\n  // loop around to same position\n  let cursorPosition =\n      (state.sortedIndexCursor + 1) % itemsMatchingFirstChar.length;\n  let nextCursorPosition = -1;\n  while (cursorPosition !== state.sortedIndexCursor) {\n    const currentItem = itemsMatchingFirstChar[cursorPosition];\n\n    const matches =\n        currentItem.text.lastIndexOf(state.typeaheadBuffer, 0) === 0;\n    const isEnabled = !isItemAtIndexDisabled(currentItem.index);\n    if (matches && isEnabled) {\n      nextCursorPosition = cursorPosition;\n      break;\n    }\n\n    cursorPosition = (cursorPosition + 1) % itemsMatchingFirstChar.length;\n  }\n\n  if (nextCursorPosition !== -1) {\n    state.sortedIndexCursor = nextCursorPosition;\n    return itemsMatchingFirstChar[state.sortedIndexCursor].index;\n  }\n\n  return -1;\n}\n\n/**\n * Whether or not the given typeahead instaance state is currently typing.\n *\n * @param state The typeahead state instance. See `initState`.\n */\nexport function isTypingInProgress(state: TypeaheadState) {\n  return state.typeaheadBuffer.length > 0;\n}\n\n/**\n * Options for handleKeydown.\n */\nexport interface HandleKeydownOpts {\n  event: KeyboardEvent;\n  isTargetListItem: boolean;\n  focusItemAtIndex: (index: number) => void;\n  focusedItemIndex: number;\n  sortedIndexByFirstChar: Map<string, MDCListTextAndIndex[]>;\n  isItemAtIndexDisabled: (index: number) => boolean;\n}\n\n/**\n * Clears the typeahaed buffer so that it resets item matching to the first\n * character.\n *\n * @param state The typeahead state instance. See `initState`.\n */\nexport function clearBuffer(state: TypeaheadState) {\n  state.typeaheadBuffer = '';\n}\n\n/**\n * Given a keydown event, it calculates whether or not to automatically focus a\n * list item depending on what was typed mimicing the typeahead functionality of\n * a standard <select> element that is open.\n *\n * @param opts Options and accessors\n *   - event - the KeyboardEvent to handle and parse\n *   - sortedIndexByFirstChar - output of `initSortedIndex(...)`\n *   - focusedItemIndex - the index of the currently focused item\n *   - focusItemAtIndex - function that focuses a list item at given index\n *   - isItemAtFocusedIndexDisabled - whether or not the currently focused item\n *      is disabled\n *   - isTargetListItem - whether or not the event target is a list item\n * @param state The typeahead state instance. See `initState`.\n *\n * @returns index of the item matched by the keydown. -1 if not matched.\n */\nexport function handleKeydown(opts: HandleKeydownOpts, state: TypeaheadState) {\n  const {\n    event,\n    isTargetListItem,\n    focusedItemIndex,\n    focusItemAtIndex,\n    sortedIndexByFirstChar,\n    isItemAtIndexDisabled,\n  } = opts;\n\n  const isArrowLeft = normalizeKey(event) === 'ArrowLeft';\n  const isArrowUp = normalizeKey(event) === 'ArrowUp';\n  const isArrowRight = normalizeKey(event) === 'ArrowRight';\n  const isArrowDown = normalizeKey(event) === 'ArrowDown';\n  const isHome = normalizeKey(event) === 'Home';\n  const isEnd = normalizeKey(event) === 'End';\n  const isEnter = normalizeKey(event) === 'Enter';\n  const isSpace = normalizeKey(event) === 'Spacebar';\n\n  if (event.ctrlKey || event.metaKey || isArrowLeft || isArrowUp ||\n      isArrowRight || isArrowDown || isHome || isEnd || isEnter) {\n    return -1;\n  }\n\n  const isCharacterKey = !isSpace && event.key.length === 1;\n\n  if (isCharacterKey) {\n    preventDefaultEvent(event);\n    const matchItemOpts: TypeaheadMatchItemOpts = {\n      focusItemAtIndex,\n      focusedItemIndex,\n      nextChar: event.key.toLowerCase(),\n      sortedIndexByFirstChar,\n      skipFocus: false,\n      isItemAtIndexDisabled,\n    };\n    return matchItem(matchItemOpts, state);\n  }\n\n  if (!isSpace) {\n    return -1;\n  }\n\n  if (isTargetListItem) {\n    preventDefaultEvent(event);\n  }\n\n  const typeaheadOnListItem = isTargetListItem && isTypingInProgress(state);\n\n  if (typeaheadOnListItem) {\n    const matchItemOpts: TypeaheadMatchItemOpts = {\n      focusItemAtIndex,\n      focusedItemIndex,\n      nextChar: ' ',\n      sortedIndexByFirstChar,\n      skipFocus: false,\n      isItemAtIndexDisabled,\n    };\n    // space participates in typeahead matching if in rapid typing mode\n    return matchItem(matchItemOpts, state);\n  }\n\n  return -1;\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport interface MDCListActionEventDetail {\n  /**\n   * Index of the list item that was activated.\n   */\n  index: number;\n}\n\nexport interface MDCListActionEvent extends Event {\n  detail: MDCListActionEventDetail;\n}\n\nexport type MDCListIndex = number | number[];\n\n/**\n * Type used by the typeahead mechanism to keep track of the index associated\n * with list item text.\n */\nexport interface MDCListTextAndIndex {\n  text: string;\n  index: number;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCMenuDimensions, MDCMenuDistance, MDCMenuPoint} from './types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCMenuSurfaceAdapter {\n  addClass(className: string): void;\n  removeClass(className: string): void;\n  hasClass(className: string): boolean;\n  hasAnchor(): boolean;\n\n  isElementInContainer(el: Element): boolean;\n  isFocused(): boolean;\n  isRtl(): boolean;\n\n  getInnerDimensions(): MDCMenuDimensions;\n  getAnchorDimensions(): ClientRect | null;\n  getWindowDimensions(): MDCMenuDimensions;\n  getBodyDimensions(): MDCMenuDimensions;\n  getWindowScroll(): MDCMenuPoint;\n  setPosition(position: Partial<MDCMenuDistance>): void;\n  setMaxHeight(height: string): void;\n  setTransformOrigin(origin: string): void;\n\n  /** Saves the element that was focused before the menu surface was opened. */\n  saveFocus(): void;\n\n  /** Restores focus to the element that was focused before the menu surface was opened. */\n  restoreFocus(): void;\n\n  /** Emits an event when the menu surface is closed. */\n  notifyClose(): void;\n\n  /** Emits an event when the menu surface is closing. */\n  notifyClosing(): void;\n\n  /** Emits an event when the menu surface is opened. */\n  notifyOpen(): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCMenuSurfaceAdapter} from './adapter';\nimport {Corner, cssClasses, strings} from './constants';\nimport {MDCMenuSurfaceFoundation} from './foundation';\nimport {MDCMenuDistance} from './types';\nimport {getCorrectPropertyName} from '@material/animation/util';\n\ntype RegisterFunction = () => void;\n\nexport type MDCMenuSurfaceFactory = (el: Element, foundation?: MDCMenuSurfaceFoundation) => MDCMenuSurface;\n\nexport class MDCMenuSurface extends MDCComponent<MDCMenuSurfaceFoundation> {\n  static attachTo(root: Element): MDCMenuSurface {\n    return new MDCMenuSurface(root);\n  }\n\n  anchorElement!: Element | null; // assigned in initialSyncWithDOM()\n\n  private previousFocus?: HTMLElement|SVGElement|null;\n\n  private handleKeydown!:\n      SpecificEventListener<'keydown'>;  // assigned in initialSyncWithDOM()\n  private handleBodyClick!:\n      SpecificEventListener<'click'>;  // assigned in initialSyncWithDOM()\n\n  private registerBodyClickListener!:\n      RegisterFunction;  // assigned in initialSyncWithDOM()\n  private deregisterBodyClickListener!:\n      RegisterFunction;  // assigned in initialSyncWithDOM()\n\n  initialSyncWithDOM() {\n    const parentEl = this.root.parentElement;\n    this.anchorElement = parentEl && parentEl.classList.contains(cssClasses.ANCHOR) ? parentEl : null;\n\n    if (this.root.classList.contains(cssClasses.FIXED)) {\n      this.setFixedPosition(true);\n    }\n\n    this.handleKeydown = (event) => {\n      this.foundation.handleKeydown(event);\n    };\n    this.handleBodyClick = (event) => {\n      this.foundation.handleBodyClick(event);\n    };\n\n    // capture so that no race between handleBodyClick and quickOpen when\n    // menusurface opened on button click which registers this listener\n    this.registerBodyClickListener = () => {\n      document.body.addEventListener(\n          'click', this.handleBodyClick, {capture: true});\n    };\n    this.deregisterBodyClickListener = () => {\n      document.body.removeEventListener(\n          'click', this.handleBodyClick, {capture: true});\n    };\n\n    this.listen('keydown', this.handleKeydown);\n    this.listen(strings.OPENED_EVENT, this.registerBodyClickListener);\n    this.listen(strings.CLOSED_EVENT, this.deregisterBodyClickListener);\n  }\n\n  destroy() {\n    this.unlisten('keydown', this.handleKeydown);\n    this.unlisten(strings.OPENED_EVENT, this.registerBodyClickListener);\n    this.unlisten(strings.CLOSED_EVENT, this.deregisterBodyClickListener);\n    super.destroy();\n  }\n\n  isOpen(): boolean {\n    return this.foundation.isOpen();\n  }\n\n  open() {\n    this.foundation.open();\n  }\n\n  close(skipRestoreFocus = false) {\n    this.foundation.close(skipRestoreFocus);\n  }\n\n  set quickOpen(quickOpen: boolean) {\n    this.foundation.setQuickOpen(quickOpen);\n  }\n\n  /** Sets the foundation to use page offsets for an positioning when the menu is hoisted to the body. */\n  setIsHoisted(isHoisted: boolean) {\n    this.foundation.setIsHoisted(isHoisted);\n  }\n\n  /** Sets the element that the menu-surface is anchored to. */\n  setMenuSurfaceAnchorElement(element: Element) {\n    this.anchorElement = element;\n  }\n\n  /** Sets the menu-surface to position: fixed. */\n  setFixedPosition(isFixed: boolean) {\n    if (isFixed) {\n      this.root.classList.add(cssClasses.FIXED);\n    } else {\n      this.root.classList.remove(cssClasses.FIXED);\n    }\n\n    this.foundation.setFixedPosition(isFixed);\n  }\n\n  /** Sets the absolute x/y position to position based on. Requires the menu to be hoisted. */\n  setAbsolutePosition(x: number, y: number) {\n    this.foundation.setAbsolutePosition(x, y);\n    this.setIsHoisted(true);\n  }\n\n  /**\n   * @param corner Default anchor corner alignment of top-left surface corner.\n   */\n  setAnchorCorner(corner: Corner) {\n    this.foundation.setAnchorCorner(corner);\n  }\n\n  setAnchorMargin(margin: Partial<MDCMenuDistance>) {\n    this.foundation.setAnchorMargin(margin);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCMenuSurfaceAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      hasClass: (className) => this.root.classList.contains(className),\n      hasAnchor: () => !!this.anchorElement,\n      notifyClose: () =>\n          this.emit(MDCMenuSurfaceFoundation.strings.CLOSED_EVENT, {}),\n      notifyClosing: () => {\n        this.emit(MDCMenuSurfaceFoundation.strings.CLOSING_EVENT, {});\n      },\n      notifyOpen: () =>\n          this.emit(MDCMenuSurfaceFoundation.strings.OPENED_EVENT, {}),\n      isElementInContainer: (el) => this.root.contains(el),\n      isRtl: () =>\n          getComputedStyle(this.root).getPropertyValue('direction') === 'rtl',\n      setTransformOrigin: (origin) => {\n        const propertyName =\n            `${getCorrectPropertyName(window, 'transform')}-origin`;\n        (this.root as HTMLElement).style.setProperty(propertyName, origin);\n      },\n\n      isFocused: () => document.activeElement === this.root,\n      saveFocus: () => {\n        this.previousFocus =\n            document.activeElement as HTMLElement | SVGElement | null;\n      },\n      restoreFocus: () => {\n        if (this.root.contains(document.activeElement)) {\n          if (this.previousFocus && this.previousFocus.focus) {\n            this.previousFocus.focus();\n          }\n        }\n      },\n\n      getInnerDimensions: () => {\n        return {\n          width: (this.root as HTMLElement).offsetWidth,\n          height: (this.root as HTMLElement).offsetHeight\n        };\n      },\n      getAnchorDimensions: () => this.anchorElement ?\n          this.anchorElement.getBoundingClientRect() :\n          null,\n      getWindowDimensions: () => {\n        return {width: window.innerWidth, height: window.innerHeight};\n      },\n      getBodyDimensions: () => {\n        return {width: document.body.clientWidth, height: document.body.clientHeight};\n      },\n      getWindowScroll: () => {\n        return {x: window.pageXOffset, y: window.pageYOffset};\n      },\n      setPosition: (position) => {\n        const rootHTML = this.root as HTMLElement;\n        rootHTML.style.left = 'left' in position ? `${position.left}px` : '';\n        rootHTML.style.right = 'right' in position ? `${position.right}px` : '';\n        rootHTML.style.top = 'top' in position ? `${position.top}px` : '';\n        rootHTML.style.bottom =\n            'bottom' in position ? `${position.bottom}px` : '';\n      },\n      setMaxHeight: (height) => {\n        (this.root as HTMLElement).style.maxHeight = height;\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCMenuSurfaceFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  ANCHOR: 'mdc-menu-surface--anchor',\n  ANIMATING_CLOSED: 'mdc-menu-surface--animating-closed',\n  ANIMATING_OPEN: 'mdc-menu-surface--animating-open',\n  FIXED: 'mdc-menu-surface--fixed',\n  IS_OPEN_BELOW: 'mdc-menu-surface--is-open-below',\n  OPEN: 'mdc-menu-surface--open',\n  ROOT: 'mdc-menu-surface',\n};\n\n// tslint:disable:object-literal-sort-keys\nconst strings = {\n  CLOSED_EVENT: 'MDCMenuSurface:closed',\n  CLOSING_EVENT: 'MDCMenuSurface:closing',\n  OPENED_EVENT: 'MDCMenuSurface:opened',\n  FOCUSABLE_ELEMENTS: [\n    'button:not(:disabled)',\n    '[href]:not([aria-disabled=\"true\"])',\n    'input:not(:disabled)',\n    'select:not(:disabled)',\n    'textarea:not(:disabled)',\n    '[tabindex]:not([tabindex=\"-1\"]):not([aria-disabled=\"true\"])',\n  ].join(', '),\n};\n// tslint:enable:object-literal-sort-keys\n\nconst numbers = {\n  /** Total duration of menu-surface open animation. */\n  TRANSITION_OPEN_DURATION: 120,\n\n  /** Total duration of menu-surface close animation. */\n  TRANSITION_CLOSE_DURATION: 75,\n\n  /**\n   * Margin left to the edge of the viewport when menu-surface is at maximum\n   * possible height. Also used as a viewport margin.\n   */\n  MARGIN_TO_EDGE: 32,\n\n  /**\n   * Ratio of anchor width to menu-surface width for switching from corner\n   * positioning to center positioning.\n   */\n  ANCHOR_TO_MENU_SURFACE_WIDTH_RATIO: 0.67,\n\n  /**\n   * Amount of time to wait before restoring focus when closing the menu\n   * surface. This is important because if a touch event triggered the menu\n   * close, and the subsequent mouse event occurs after focus is restored, then\n   * the restored focus would be lost.\n   */\n  TOUCH_EVENT_WAIT_MS: 30,\n};\n\n/**\n * Enum for bits in the {@see Corner) bitmap.\n */\nenum CornerBit {\n  BOTTOM = 1,\n  CENTER = 2,\n  RIGHT = 4,\n  FLIP_RTL = 8,\n}\n\n/**\n * Enum for representing an element corner for positioning the menu-surface.\n *\n * The START constants map to LEFT if element directionality is left\n * to right and RIGHT if the directionality is right to left.\n * Likewise END maps to RIGHT or LEFT depending on the directionality.\n */\nenum Corner {\n  TOP_LEFT = 0,\n  TOP_RIGHT = CornerBit.RIGHT,\n  BOTTOM_LEFT = CornerBit.BOTTOM,\n  BOTTOM_RIGHT = CornerBit.BOTTOM | CornerBit.RIGHT, // tslint:disable-line:no-bitwise\n  TOP_START = CornerBit.FLIP_RTL,\n  TOP_END = CornerBit.FLIP_RTL | CornerBit.RIGHT, // tslint:disable-line:no-bitwise\n  BOTTOM_START = CornerBit.BOTTOM | CornerBit.FLIP_RTL, // tslint:disable-line:no-bitwise\n  BOTTOM_END = CornerBit.BOTTOM | CornerBit.RIGHT | CornerBit.FLIP_RTL, // tslint:disable-line:no-bitwise\n}\n\nexport {cssClasses, strings, numbers, CornerBit, Corner};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCMenuSurfaceAdapter} from './adapter';\nimport {Corner, CornerBit, cssClasses, numbers, strings} from './constants';\nimport {MDCMenuDimensions, MDCMenuDistance, MDCMenuPoint} from './types';\n\ninterface AutoLayoutMeasurements {\n  anchorSize: MDCMenuDimensions;\n  bodySize: MDCMenuDimensions;\n  surfaceSize: MDCMenuDimensions;\n  viewportDistance: MDCMenuDistance;\n  viewportSize: MDCMenuDimensions;\n  windowScroll: MDCMenuPoint;\n}\n\nexport class MDCMenuSurfaceFoundation extends MDCFoundation<MDCMenuSurfaceAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get Corner() {\n    return Corner;\n  }\n\n  /**\n   * @see {@link MDCMenuSurfaceAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCMenuSurfaceAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => false,\n      hasAnchor: () => false,\n\n      isElementInContainer: () => false,\n      isFocused: () => false,\n      isRtl: () => false,\n\n      getInnerDimensions: () => ({height: 0, width: 0}),\n      getAnchorDimensions: () => null,\n      getWindowDimensions: () => ({height: 0, width: 0}),\n      getBodyDimensions: () => ({height: 0, width: 0}),\n      getWindowScroll: () => ({x: 0, y: 0}),\n      setPosition: () => undefined,\n      setMaxHeight: () => undefined,\n      setTransformOrigin: () => undefined,\n\n      saveFocus: () => undefined,\n      restoreFocus: () => undefined,\n\n      notifyClose: () => undefined,\n      notifyOpen: () => undefined,\n      notifyClosing: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private isSurfaceOpen = false;\n  private isQuickOpen = false;\n  private isHoistedElement = false;\n  private isFixedPosition = false;\n  private isHorizontallyCenteredOnViewport = false;\n\n  private maxHeight = 0;\n\n  private openAnimationEndTimerId = 0;\n  private closeAnimationEndTimerId = 0;\n  private animationRequestId = 0;\n\n  private anchorCorner: Corner = Corner.TOP_START;\n\n  /**\n   * Corner of the menu surface to which menu surface is attached to anchor.\n   *\n   *  Anchor corner --->+----------+\n   *                    |  ANCHOR  |\n   *                    +----------+\n   *  Origin corner --->+--------------+\n   *                    |              |\n   *                    |              |\n   *                    | MENU SURFACE |\n   *                    |              |\n   *                    |              |\n   *                    +--------------+\n   */\n  private originCorner: Corner = Corner.TOP_START;\n  private readonly anchorMargin:\n      MDCMenuDistance = {top: 0, right: 0, bottom: 0, left: 0};\n  private readonly position: MDCMenuPoint = {x: 0, y: 0};\n\n  private dimensions!: MDCMenuDimensions;         // assigned in open()\n  private measurements!: AutoLayoutMeasurements;  // assigned in open()\n\n  constructor(adapter?: Partial<MDCMenuSurfaceAdapter>) {\n    super({...MDCMenuSurfaceFoundation.defaultAdapter, ...adapter});\n  }\n\n  init() {\n    const {ROOT, OPEN} = MDCMenuSurfaceFoundation.cssClasses;\n\n    if (!this.adapter.hasClass(ROOT)) {\n      throw new Error(`${ROOT} class required in root element.`);\n    }\n\n    if (this.adapter.hasClass(OPEN)) {\n      this.isSurfaceOpen = true;\n    }\n  }\n\n  destroy() {\n    clearTimeout(this.openAnimationEndTimerId);\n    clearTimeout(this.closeAnimationEndTimerId);\n    // Cancel any currently running animations.\n    cancelAnimationFrame(this.animationRequestId);\n  }\n\n  /**\n   * @param corner Default anchor corner alignment of top-left menu surface corner.\n   */\n  setAnchorCorner(corner: Corner) {\n    this.anchorCorner = corner;\n  }\n\n  /**\n   * Flip menu corner horizontally.\n   */\n  flipCornerHorizontally() {\n    this.originCorner = this.originCorner ^ CornerBit.RIGHT;\n  }\n\n  /**\n   * @param margin Set of margin values from anchor.\n   */\n  setAnchorMargin(margin: Partial<MDCMenuDistance>) {\n    this.anchorMargin.top = margin.top || 0;\n    this.anchorMargin.right = margin.right || 0;\n    this.anchorMargin.bottom = margin.bottom || 0;\n    this.anchorMargin.left = margin.left || 0;\n  }\n\n  /** Used to indicate if the menu-surface is hoisted to the body. */\n  setIsHoisted(isHoisted: boolean) {\n    this.isHoistedElement = isHoisted;\n  }\n\n  /** Used to set the menu-surface calculations based on a fixed position menu. */\n  setFixedPosition(isFixedPosition: boolean) {\n    this.isFixedPosition = isFixedPosition;\n  }\n\n  /** Sets the menu-surface position on the page. */\n  setAbsolutePosition(x: number, y: number) {\n    this.position.x = this.isFinite(x) ? x : 0;\n    this.position.y = this.isFinite(y) ? y : 0;\n  }\n\n  /** Sets whether menu-surface should be horizontally centered to viewport. */\n  setIsHorizontallyCenteredOnViewport(isCentered: boolean) {\n    this.isHorizontallyCenteredOnViewport = isCentered;\n  }\n\n  setQuickOpen(quickOpen: boolean) {\n    this.isQuickOpen = quickOpen;\n  }\n\n  /**\n   * Sets maximum menu-surface height on open.\n   * @param maxHeight The desired max-height. Set to 0 (default) to\n   *     automatically calculate max height based on available viewport space.\n   */\n  setMaxHeight(maxHeight: number) {\n    this.maxHeight = maxHeight;\n  }\n\n  isOpen() {\n    return this.isSurfaceOpen;\n  }\n\n  /**\n   * Open the menu surface.\n   */\n  open() {\n    if (this.isSurfaceOpen) {\n      return;\n    }\n\n    this.adapter.saveFocus();\n\n    if (this.isQuickOpen) {\n      this.isSurfaceOpen = true;\n      this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.OPEN);\n      this.dimensions = this.adapter.getInnerDimensions();\n      this.autoposition();\n      this.adapter.notifyOpen();\n    } else {\n      this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.ANIMATING_OPEN);\n      this.animationRequestId = requestAnimationFrame(() => {\n        this.dimensions = this.adapter.getInnerDimensions();\n        this.autoposition();\n        this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.OPEN);\n        this.openAnimationEndTimerId = setTimeout(() => {\n          this.openAnimationEndTimerId = 0;\n          this.adapter.removeClass(\n              MDCMenuSurfaceFoundation.cssClasses.ANIMATING_OPEN);\n          this.adapter.notifyOpen();\n        }, numbers.TRANSITION_OPEN_DURATION);\n      });\n\n      this.isSurfaceOpen = true;\n    }\n  }\n\n  /**\n   * Closes the menu surface.\n   */\n  close(skipRestoreFocus = false) {\n    if (!this.isSurfaceOpen) {\n      return;\n    }\n\n    this.adapter.notifyClosing();\n\n    if (this.isQuickOpen) {\n      this.isSurfaceOpen = false;\n      if (!skipRestoreFocus) {\n        this.maybeRestoreFocus();\n      }\n\n      this.adapter.removeClass(MDCMenuSurfaceFoundation.cssClasses.OPEN);\n      this.adapter.removeClass(\n          MDCMenuSurfaceFoundation.cssClasses.IS_OPEN_BELOW);\n      this.adapter.notifyClose();\n\n      return;\n    }\n\n    this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.ANIMATING_CLOSED);\n    requestAnimationFrame(() => {\n      this.adapter.removeClass(MDCMenuSurfaceFoundation.cssClasses.OPEN);\n      this.adapter.removeClass(\n          MDCMenuSurfaceFoundation.cssClasses.IS_OPEN_BELOW);\n      this.closeAnimationEndTimerId = setTimeout(() => {\n        this.closeAnimationEndTimerId = 0;\n        this.adapter.removeClass(\n            MDCMenuSurfaceFoundation.cssClasses.ANIMATING_CLOSED);\n        this.adapter.notifyClose();\n      }, numbers.TRANSITION_CLOSE_DURATION);\n    });\n\n    this.isSurfaceOpen = false;\n    if (!skipRestoreFocus) {\n      this.maybeRestoreFocus();\n    }\n  }\n\n  /** Handle clicks and close if not within menu-surface element. */\n  handleBodyClick(evt: MouseEvent) {\n    const el = evt.target as Element;\n    if (this.adapter.isElementInContainer(el)) {\n      return;\n    }\n    this.close();\n  }\n\n  /** Handle keys that close the surface. */\n  handleKeydown(evt: KeyboardEvent) {\n    const {keyCode, key} = evt;\n\n    const isEscape = key === 'Escape' || keyCode === 27;\n    if (isEscape) {\n      this.close();\n    }\n  }\n\n  private autoposition() {\n    // Compute measurements for autoposition methods reuse.\n    this.measurements = this.getAutoLayoutmeasurements();\n\n    const corner = this.getoriginCorner();\n    const maxMenuSurfaceHeight = this.getMenuSurfaceMaxHeight(corner);\n    const verticalAlignment =\n        this.hasBit(corner, CornerBit.BOTTOM) ? 'bottom' : 'top';\n    let horizontalAlignment =\n        this.hasBit(corner, CornerBit.RIGHT) ? 'right' : 'left';\n    const horizontalOffset = this.getHorizontalOriginOffset(corner);\n    const verticalOffset = this.getVerticalOriginOffset(corner);\n    const {anchorSize, surfaceSize} = this.measurements;\n\n    const position: Partial<MDCMenuDistance> = {\n      [horizontalAlignment]: horizontalOffset,\n      [verticalAlignment]: verticalOffset,\n    };\n\n    // Center align when anchor width is comparable or greater than menu surface, otherwise keep corner.\n    if (anchorSize.width / surfaceSize.width > numbers.ANCHOR_TO_MENU_SURFACE_WIDTH_RATIO) {\n      horizontalAlignment = 'center';\n    }\n\n    // If the menu-surface has been hoisted to the body, it's no longer relative to the anchor element\n    if (this.isHoistedElement || this.isFixedPosition) {\n      this.adjustPositionForHoistedElement(position);\n    }\n\n    this.adapter.setTransformOrigin(\n        `${horizontalAlignment} ${verticalAlignment}`);\n    this.adapter.setPosition(position);\n    this.adapter.setMaxHeight(\n        maxMenuSurfaceHeight ? maxMenuSurfaceHeight + 'px' : '');\n\n    // If it is opened from the top then add is-open-below class\n    if (!this.hasBit(corner, CornerBit.BOTTOM)) {\n      this.adapter.addClass(MDCMenuSurfaceFoundation.cssClasses.IS_OPEN_BELOW);\n    }\n  }\n\n  /**\n   * @return Measurements used to position menu surface popup.\n   */\n  private getAutoLayoutmeasurements(): AutoLayoutMeasurements {\n    let anchorRect = this.adapter.getAnchorDimensions();\n    const bodySize = this.adapter.getBodyDimensions();\n    const viewportSize = this.adapter.getWindowDimensions();\n    const windowScroll = this.adapter.getWindowScroll();\n\n    if (!anchorRect) {\n      // tslint:disable:object-literal-sort-keys Positional properties are more readable when they're grouped together\n      anchorRect = {\n        top: this.position.y,\n        right: this.position.x,\n        bottom: this.position.y,\n        left: this.position.x,\n        width: 0,\n        height: 0,\n      };\n      // tslint:enable:object-literal-sort-keys\n    }\n\n    return {\n      anchorSize: anchorRect,\n      bodySize,\n      surfaceSize: this.dimensions,\n      viewportDistance: {\n        // tslint:disable:object-literal-sort-keys Positional properties are more readable when they're grouped together\n        top: anchorRect.top,\n        right: viewportSize.width - anchorRect.right,\n        bottom: viewportSize.height - anchorRect.bottom,\n        left: anchorRect.left,\n        // tslint:enable:object-literal-sort-keys\n      },\n      viewportSize,\n      windowScroll,\n    };\n  }\n\n  /**\n   * Computes the corner of the anchor from which to animate and position the\n   * menu surface.\n   *\n   * Only LEFT or RIGHT bit is used to position the menu surface ignoring RTL\n   * context. E.g., menu surface will be positioned from right side on TOP_END.\n   */\n  private getoriginCorner(): Corner {\n    let corner = this.originCorner;\n\n    const {viewportDistance, anchorSize, surfaceSize} = this.measurements;\n    const {MARGIN_TO_EDGE} = MDCMenuSurfaceFoundation.numbers;\n\n    const isAnchoredToBottom = this.hasBit(this.anchorCorner, CornerBit.BOTTOM);\n\n    let availableTop;\n    let availableBottom;\n    if (isAnchoredToBottom) {\n      availableTop =\n          viewportDistance.top - MARGIN_TO_EDGE + this.anchorMargin.bottom;\n      availableBottom =\n          viewportDistance.bottom - MARGIN_TO_EDGE - this.anchorMargin.bottom;\n    } else {\n      availableTop =\n          viewportDistance.top - MARGIN_TO_EDGE + this.anchorMargin.top;\n      availableBottom = viewportDistance.bottom - MARGIN_TO_EDGE +\n          anchorSize.height - this.anchorMargin.top;\n    }\n\n    const isAvailableBottom = availableBottom - surfaceSize.height > 0;\n    if (!isAvailableBottom && availableTop > availableBottom) {\n      // Attach bottom side of surface to the anchor.\n      corner = this.setBit(corner, CornerBit.BOTTOM);\n    }\n\n    const isRtl = this.adapter.isRtl();\n    const isFlipRtl = this.hasBit(this.anchorCorner, CornerBit.FLIP_RTL);\n    const hasRightBit = this.hasBit(this.anchorCorner, CornerBit.RIGHT) ||\n        this.hasBit(corner, CornerBit.RIGHT);\n\n    // Whether surface attached to right side of anchor element.\n    let isAnchoredToRight = false;\n\n    // Anchored to start\n    if (isRtl && isFlipRtl) {\n      isAnchoredToRight = !hasRightBit;\n    } else {\n      // Anchored to right\n      isAnchoredToRight = hasRightBit;\n    }\n\n    let availableLeft;\n    let availableRight;\n    if (isAnchoredToRight) {\n      availableLeft =\n          viewportDistance.left + anchorSize.width + this.anchorMargin.right;\n      availableRight = viewportDistance.right - this.anchorMargin.right;\n    } else {\n      availableLeft = viewportDistance.left + this.anchorMargin.left;\n      availableRight =\n          viewportDistance.right + anchorSize.width - this.anchorMargin.left;\n    }\n\n    const isAvailableLeft = availableLeft - surfaceSize.width > 0;\n    const isAvailableRight = availableRight - surfaceSize.width > 0;\n    const isOriginCornerAlignedToEnd =\n        this.hasBit(corner, CornerBit.FLIP_RTL) &&\n        this.hasBit(corner, CornerBit.RIGHT);\n\n    if (isAvailableRight && isOriginCornerAlignedToEnd && isRtl ||\n        !isAvailableLeft && isOriginCornerAlignedToEnd) {\n      // Attach left side of surface to the anchor.\n      corner = this.unsetBit(corner, CornerBit.RIGHT);\n    } else if (\n        isAvailableLeft && isAnchoredToRight && isRtl ||\n        (isAvailableLeft && !isAnchoredToRight && hasRightBit) ||\n        (!isAvailableRight && availableLeft >= availableRight)) {\n      // Attach right side of surface to the anchor.\n      corner = this.setBit(corner, CornerBit.RIGHT);\n    }\n\n    return corner;\n  }\n\n  /**\n   * @param corner Origin corner of the menu surface.\n   * @return Maximum height of the menu surface, based on available space. 0 indicates should not be set.\n   */\n  private getMenuSurfaceMaxHeight(corner: Corner): number {\n    if (this.maxHeight > 0) {\n      return this.maxHeight;\n    }\n\n    const {viewportDistance} = this.measurements;\n\n    let maxHeight = 0;\n    const isBottomAligned = this.hasBit(corner, CornerBit.BOTTOM);\n    const isBottomAnchored = this.hasBit(this.anchorCorner, CornerBit.BOTTOM);\n    const {MARGIN_TO_EDGE} = MDCMenuSurfaceFoundation.numbers;\n\n    // When maximum height is not specified, it is handled from CSS.\n    if (isBottomAligned) {\n      maxHeight = viewportDistance.top + this.anchorMargin.top - MARGIN_TO_EDGE;\n      if (!isBottomAnchored) {\n        maxHeight += this.measurements.anchorSize.height;\n      }\n    } else {\n      maxHeight = viewportDistance.bottom - this.anchorMargin.bottom +\n          this.measurements.anchorSize.height - MARGIN_TO_EDGE;\n      if (isBottomAnchored) {\n        maxHeight -= this.measurements.anchorSize.height;\n      }\n    }\n\n    return maxHeight;\n  }\n\n  /**\n   * @param corner Origin corner of the menu surface.\n   * @return Horizontal offset of menu surface origin corner from corresponding anchor corner.\n   */\n  private getHorizontalOriginOffset(corner: Corner): number {\n    const {anchorSize} = this.measurements;\n\n    // isRightAligned corresponds to using the 'right' property on the surface.\n    const isRightAligned = this.hasBit(corner, CornerBit.RIGHT);\n    const avoidHorizontalOverlap =\n        this.hasBit(this.anchorCorner, CornerBit.RIGHT);\n\n    if (isRightAligned) {\n      const rightOffset = avoidHorizontalOverlap ?\n          anchorSize.width - this.anchorMargin.left :\n          this.anchorMargin.right;\n\n      // For hoisted or fixed elements, adjust the offset by the difference\n      // between viewport width and body width so when we calculate the right\n      // value (`adjustPositionForHoistedElement`) based on the element\n      // position, the right property is correct.\n      if (this.isHoistedElement || this.isFixedPosition) {\n        return rightOffset -\n            (this.measurements.viewportSize.width -\n             this.measurements.bodySize.width);\n      }\n\n      return rightOffset;\n    }\n\n    return avoidHorizontalOverlap ? anchorSize.width - this.anchorMargin.right :\n                                    this.anchorMargin.left;\n  }\n\n  /**\n   * @param corner Origin corner of the menu surface.\n   * @return Vertical offset of menu surface origin corner from corresponding anchor corner.\n   */\n  private getVerticalOriginOffset(corner: Corner): number {\n    const {anchorSize} = this.measurements;\n    const isBottomAligned = this.hasBit(corner, CornerBit.BOTTOM);\n    const avoidVerticalOverlap =\n        this.hasBit(this.anchorCorner, CornerBit.BOTTOM);\n\n    let y = 0;\n    if (isBottomAligned) {\n      y = avoidVerticalOverlap ? anchorSize.height - this.anchorMargin.top :\n                                 -this.anchorMargin.bottom;\n    } else {\n      y = avoidVerticalOverlap ?\n          (anchorSize.height + this.anchorMargin.bottom) :\n          this.anchorMargin.top;\n    }\n    return y;\n  }\n\n  /** Calculates the offsets for positioning the menu-surface when the menu-surface has been hoisted to the body. */\n  private adjustPositionForHoistedElement(position: Partial<MDCMenuDistance>) {\n    const {windowScroll, viewportDistance, surfaceSize, viewportSize} =\n        this.measurements;\n\n    const props = Object.keys(position) as Array<keyof Partial<MDCMenuDistance>>;\n\n    for (const prop of props) {\n      let value = position[prop] || 0;\n\n      if (this.isHorizontallyCenteredOnViewport &&\n          (prop === 'left' || prop === 'right')) {\n        position[prop] = (viewportSize.width - surfaceSize.width) / 2;\n        continue;\n      }\n\n      // Hoisted surfaces need to have the anchor elements location on the page added to the\n      // position properties for proper alignment on the body.\n      value += viewportDistance[prop];\n\n      // Surfaces that are absolutely positioned need to have additional calculations for scroll\n      // and bottom positioning.\n      if (!this.isFixedPosition) {\n        if (prop === 'top') {\n          value += windowScroll.y;\n        } else if (prop === 'bottom') {\n          value -= windowScroll.y;\n        } else if (prop === 'left') {\n          value += windowScroll.x;\n        } else { // prop === 'right'\n          value -= windowScroll.x;\n        }\n      }\n\n      position[prop] = value;\n    }\n  }\n\n  /**\n   * The last focused element when the menu surface was opened should regain focus, if the user is\n   * focused on or within the menu surface when it is closed.\n   */\n  private maybeRestoreFocus() {\n    const isRootFocused = this.adapter.isFocused();\n    const childHasFocus = document.activeElement &&\n        this.adapter.isElementInContainer(document.activeElement);\n    if (isRootFocused || childHasFocus) {\n      // Wait before restoring focus when closing the menu surface. This is\n      // important because if a touch event triggered the menu close, and the\n      // subsequent mouse event occurs after focus is restored, then the\n      // restored focus would be lost.\n      setTimeout(() => {\n        this.adapter.restoreFocus();\n      }, numbers.TOUCH_EVENT_WAIT_MS);\n    }\n  }\n\n  private hasBit(corner: Corner, bit: CornerBit): boolean {\n    return Boolean(corner & bit); // tslint:disable-line:no-bitwise\n  }\n\n  private setBit(corner: Corner, bit: CornerBit): Corner {\n    return corner | bit; // tslint:disable-line:no-bitwise\n  }\n\n  private unsetBit(corner: Corner, bit: CornerBit): Corner {\n    return corner ^ bit;\n  }\n\n  /**\n   * isFinite that doesn't force conversion to number type.\n   * Equivalent to Number.isFinite in ES2015, which is not supported in IE.\n   */\n  private isFinite(num: number): boolean {\n    return typeof num === 'number' && isFinite(num);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCMenuSurfaceFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport interface MDCMenuDimensions {\n  width: number;\n  height: number;\n}\n\nexport interface MDCMenuDistance {\n  top: number;\n  right: number;\n  bottom: number;\n  left: number;\n}\n\nexport interface MDCMenuPoint {\n  x: number;\n  y: number;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCMenuItemEventDetail} from './types';\n\n/**\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCMenuAdapter {\n  /**\n   * Adds a class to the element at the index provided.\n   */\n  addClassToElementAtIndex(index: number, className: string): void;\n\n  /**\n   * Removes a class from the element at the index provided\n   */\n  removeClassFromElementAtIndex(index: number, className: string): void;\n\n  /**\n   * Adds an attribute, with value, to the element at the index provided.\n   */\n  addAttributeToElementAtIndex(index: number, attr: string, value: string): void;\n\n  /**\n   * Removes an attribute from an element at the index provided.\n   */\n  removeAttributeFromElementAtIndex(index: number, attr: string): void;\n\n  /**\n   * @return true if the element contains the className.\n   */\n  elementContainsClass(element: Element, className: string): boolean;\n\n  /**\n   * Closes the menu-surface.\n   * @param skipRestoreFocus Whether to skip restoring focus to the previously\n   *    focused element after the surface has been closed.\n   */\n  closeSurface(skipRestoreFocus?: boolean): void;\n\n  /**\n   * @return Index of the element in the list or -1 if it is not in the list.\n   */\n  getElementIndex(element: Element): number;\n\n  /**\n   * Emit an event when a menu item is selected.\n   */\n  notifySelected(evtData: MDCMenuItemEventDetail): void;\n\n  /** @return Returns the menu item count. */\n  getMenuItemCount(): number;\n\n  /**\n   * Focuses the menu item at given index.\n   * @param index Index of the menu item that will be focused every time the menu opens.\n   */\n  focusItemAtIndex(index: number): void;\n\n  /** Focuses the list root element. */\n  focusListRoot(): void;\n\n  /**\n   * @return Returns selected list item index within the same selection group which is\n   * a sibling of item at given `index`.\n   * @param index Index of the menu item with possible selected sibling.\n   */\n  getSelectedSiblingOfItemAtIndex(index: number): number;\n\n  /**\n   * @return Returns true if item at specified index is contained within an `.mdc-menu__selection-group` element.\n   * @param index Index of the selectable menu item.\n   */\n  isSelectableItemAtIndex(index: number): boolean;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {CustomEventListener, SpecificEventListener} from '@material/base/types';\nimport {closest} from '@material/dom/ponyfill';\nimport {MDCList, MDCListFactory} from '@material/list/component';\nimport {numbers as listConstants} from '@material/list/constants';\nimport {MDCListFoundation} from '@material/list/foundation';\nimport {MDCListActionEvent, MDCListIndex} from '@material/list/types';\nimport {MDCMenuSurface, MDCMenuSurfaceFactory} from '@material/menu-surface/component';\nimport {Corner} from '@material/menu-surface/constants';\nimport {MDCMenuSurfaceFoundation} from '@material/menu-surface/foundation';\nimport {MDCMenuDistance} from '@material/menu-surface/types';\nimport {MDCMenuAdapter} from './adapter';\nimport {cssClasses, DefaultFocusState, strings} from './constants';\nimport {MDCMenuFoundation} from './foundation';\nimport {MDCMenuItemComponentEventDetail} from './types';\n\nexport type MDCMenuFactory = (el: Element, foundation?: MDCMenuFoundation) => MDCMenu;\n\nexport class MDCMenu extends MDCComponent<MDCMenuFoundation> {\n  static attachTo(root: Element) {\n    return new MDCMenu(root);\n  }\n\n  private menuSurfaceFactory!:\n      MDCMenuSurfaceFactory;             // assigned in initialize()\n  private listFactory!: MDCListFactory;  // assigned in initialize()\n\n  private menuSurface!: MDCMenuSurface;  // assigned in initialSyncWithDOM()\n  private list!: MDCList|null;           // assigned in initialSyncWithDOM()\n\n  private handleKeydown!:\n      SpecificEventListener<'keydown'>;  // assigned in initialSyncWithDOM()\n  private handleItemAction!:\n      CustomEventListener<MDCListActionEvent>;  // assigned in\n                                                // initialSyncWithDOM()\n  private handleMenuSurfaceOpened!:\n      EventListener;  // assigned in initialSyncWithDOM()\n\n  initialize(\n      menuSurfaceFactory: MDCMenuSurfaceFactory = (el) => new MDCMenuSurface(el),\n      listFactory: MDCListFactory = (el) => new MDCList(el)) {\n    this.menuSurfaceFactory = menuSurfaceFactory;\n    this.listFactory = listFactory;\n  }\n\n  initialSyncWithDOM() {\n    this.menuSurface = this.menuSurfaceFactory(this.root);\n\n    const list = this.root.querySelector(strings.LIST_SELECTOR);\n    if (list) {\n      this.list = this.listFactory(list);\n      this.list.wrapFocus = true;\n    } else {\n      this.list = null;\n    }\n\n    this.handleKeydown = (evt) => {\n      this.foundation.handleKeydown(evt);\n    };\n    this.handleItemAction = (evt) => {\n      this.foundation.handleItemAction(this.items[evt.detail.index]);\n    };\n    this.handleMenuSurfaceOpened = () => {\n      this.foundation.handleMenuSurfaceOpened();\n    };\n\n    this.menuSurface.listen(\n        MDCMenuSurfaceFoundation.strings.OPENED_EVENT,\n        this.handleMenuSurfaceOpened);\n    this.listen('keydown', this.handleKeydown);\n    this.listen(MDCListFoundation.strings.ACTION_EVENT, this.handleItemAction);\n  }\n\n  destroy() {\n    if (this.list) {\n      this.list.destroy();\n    }\n\n    this.menuSurface.destroy();\n    this.menuSurface.unlisten(\n        MDCMenuSurfaceFoundation.strings.OPENED_EVENT,\n        this.handleMenuSurfaceOpened);\n    this.unlisten('keydown', this.handleKeydown);\n    this.unlisten(\n        MDCListFoundation.strings.ACTION_EVENT, this.handleItemAction);\n    super.destroy();\n  }\n\n  get open(): boolean {\n    return this.menuSurface.isOpen();\n  }\n\n  set open(value: boolean) {\n    if (value) {\n      this.menuSurface.open();\n    } else {\n      this.menuSurface.close();\n    }\n  }\n\n  get wrapFocus(): boolean {\n    return this.list ? this.list.wrapFocus : false;\n  }\n\n  set wrapFocus(value: boolean) {\n    if (this.list) {\n      this.list.wrapFocus = value;\n    }\n  }\n\n  /**\n   * Sets whether the menu has typeahead functionality.\n   * @param value Whether typeahead is enabled.\n   */\n  set hasTypeahead(value: boolean) {\n    if (this.list) {\n      this.list.hasTypeahead = value;\n    }\n  }\n\n  /**\n   * @return Whether typeahead logic is currently matching some user prefix.\n   */\n  get typeaheadInProgress() {\n    return this.list ? this.list.typeaheadInProgress : false;\n  }\n\n  /**\n   * Given the next desired character from the user, adds it to the typeahead\n   * buffer. Then, attempts to find the next option matching the buffer. Wraps\n   * around if at the end of options.\n   *\n   * @param nextChar The next character to add to the prefix buffer.\n   * @param startingIndex The index from which to start matching. Only relevant\n   *     when starting a new match sequence. To start a new match sequence,\n   *     clear the buffer using `clearTypeaheadBuffer`, or wait for the buffer\n   *     to clear after a set interval defined in list foundation. Defaults to\n   *     the currently focused index.\n   * @return The index of the matched item, or -1 if no match.\n   */\n  typeaheadMatchItem(nextChar: string, startingIndex?: number): number {\n    if (this.list) {\n      return this.list.typeaheadMatchItem(nextChar, startingIndex);\n    }\n    return -1;\n  }\n\n  /**\n   * Layout the underlying list element in the case of any dynamic updates\n   * to its structure.\n   */\n  layout() {\n    if (this.list) {\n      this.list.layout();\n    }\n  }\n\n  /**\n   * Return the items within the menu. Note that this only contains the set of elements within\n   * the items container that are proper list items, and not supplemental / presentational DOM\n   * elements.\n   */\n  get items(): Element[] {\n    return this.list ? this.list.listElements : [];\n  }\n\n  /**\n   * Turns on/off the underlying list's single selection mode. Used mainly\n   * by select menu.\n   *\n   * @param singleSelection Whether to enable single selection mode.\n   */\n  set singleSelection(singleSelection: boolean) {\n    if (this.list) {\n      this.list.singleSelection = singleSelection;\n    }\n  }\n\n  /**\n   * Retrieves the selected index. Only applicable to select menus.\n   * @return The selected index, which is a number for single selection and\n   *     radio lists, and an array of numbers for checkbox lists.\n   */\n  get selectedIndex(): MDCListIndex {\n    return this.list ? this.list.selectedIndex : listConstants.UNSET_INDEX;\n  }\n\n  /**\n   * Sets the selected index of the list. Only applicable to select menus.\n   * @param index The selected index, which is a number for single selection and\n   *     radio lists, and an array of numbers for checkbox lists.\n   */\n  set selectedIndex(index: MDCListIndex) {\n    if (this.list) {\n      this.list.selectedIndex = index;\n    }\n  }\n\n  set quickOpen(quickOpen: boolean) {\n    this.menuSurface.quickOpen = quickOpen;\n  }\n\n  /**\n   * Sets default focus state where the menu should focus every time when menu\n   * is opened. Focuses the list root (`DefaultFocusState.LIST_ROOT`) element by\n   * default.\n   * @param focusState Default focus state.\n   */\n  setDefaultFocusState(focusState: DefaultFocusState) {\n    this.foundation.setDefaultFocusState(focusState);\n  }\n\n  /**\n   * @param corner Default anchor corner alignment of top-left menu corner.\n   */\n  setAnchorCorner(corner: Corner) {\n    this.menuSurface.setAnchorCorner(corner);\n  }\n\n  setAnchorMargin(margin: Partial<MDCMenuDistance>) {\n    this.menuSurface.setAnchorMargin(margin);\n  }\n\n  /**\n   * Sets the list item as the selected row at the specified index.\n   * @param index Index of list item within menu.\n   */\n  setSelectedIndex(index: number) {\n    this.foundation.setSelectedIndex(index);\n  }\n\n  /**\n   * Sets the enabled state to isEnabled for the menu item at the given index.\n   * @param index Index of the menu item\n   * @param isEnabled The desired enabled state of the menu item.\n   */\n  setEnabled(index: number, isEnabled: boolean): void {\n    this.foundation.setEnabled(index, isEnabled);\n  }\n\n  /**\n   * @return The item within the menu at the index specified.\n   */\n  getOptionByIndex(index: number): Element | null {\n    const items = this.items;\n\n    if (index < items.length) {\n      return this.items[index];\n    } else {\n      return null;\n    }\n  }\n\n  /**\n   * @param index A menu item's index.\n   * @return The primary text within the menu at the index specified.\n   */\n  getPrimaryTextAtIndex(index: number): string {\n    const item = this.getOptionByIndex(index);\n    if (item && this.list) {\n      return this.list.getPrimaryText(item) || '';\n    }\n    return '';\n  }\n\n  setFixedPosition(isFixed: boolean) {\n    this.menuSurface.setFixedPosition(isFixed);\n  }\n\n  setIsHoisted(isHoisted: boolean) {\n    this.menuSurface.setIsHoisted(isHoisted);\n  }\n\n  setAbsolutePosition(x: number, y: number) {\n    this.menuSurface.setAbsolutePosition(x, y);\n  }\n\n  /**\n   * Sets the element that the menu-surface is anchored to.\n   */\n  setAnchorElement(element: Element) {\n    this.menuSurface.anchorElement = element;\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCMenuAdapter = {\n      addClassToElementAtIndex: (index, className) => {\n        const list = this.items;\n        list[index].classList.add(className);\n      },\n      removeClassFromElementAtIndex: (index, className) => {\n        const list = this.items;\n        list[index].classList.remove(className);\n      },\n      addAttributeToElementAtIndex: (index, attr, value) => {\n        const list = this.items;\n        list[index].setAttribute(attr, value);\n      },\n      removeAttributeFromElementAtIndex: (index, attr) => {\n        const list = this.items;\n        list[index].removeAttribute(attr);\n      },\n      elementContainsClass: (element, className) =>\n          element.classList.contains(className),\n      closeSurface: (skipRestoreFocus: boolean) => {\n        this.menuSurface.close(skipRestoreFocus);\n      },\n      getElementIndex: (element) => this.items.indexOf(element),\n      notifySelected: (evtData) => {\n        this.emit<MDCMenuItemComponentEventDetail>(strings.SELECTED_EVENT, {\n          index: evtData.index,\n          item: this.items[evtData.index],\n        });\n      },\n      getMenuItemCount: () => this.items.length,\n      focusItemAtIndex: (index) => {\n        (this.items[index] as HTMLElement).focus();\n      },\n      focusListRoot: () => {\n        (this.root.querySelector(strings.LIST_SELECTOR) as HTMLElement).focus();\n      },\n      isSelectableItemAtIndex: (index) =>\n          !!closest(this.items[index], `.${cssClasses.MENU_SELECTION_GROUP}`),\n      getSelectedSiblingOfItemAtIndex: (index) => {\n        const selectionGroupEl = closest(this.items[index], `.${cssClasses.MENU_SELECTION_GROUP}`) as HTMLElement;\n        const selectedItemEl = selectionGroupEl.querySelector(`.${cssClasses.MENU_SELECTED_LIST_ITEM}`);\n        return selectedItemEl ? this.items.indexOf(selectedItemEl) : -1;\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCMenuFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  MENU_SELECTED_LIST_ITEM: 'mdc-menu-item--selected',\n  MENU_SELECTION_GROUP: 'mdc-menu__selection-group',\n  ROOT: 'mdc-menu',\n};\n\nconst strings = {\n  ARIA_CHECKED_ATTR: 'aria-checked',\n  ARIA_DISABLED_ATTR: 'aria-disabled',\n  CHECKBOX_SELECTOR: 'input[type=\"checkbox\"]',\n  LIST_SELECTOR: '.mdc-list,.mdc-deprecated-list',\n  SELECTED_EVENT: 'MDCMenu:selected',\n};\n\nconst numbers = {\n  FOCUS_ROOT_INDEX: -1,\n};\n\nenum DefaultFocusState {\n  NONE = 0,\n  LIST_ROOT = 1,\n  FIRST_ITEM = 2,\n  LAST_ITEM = 3,\n}\n\nexport {cssClasses, strings, numbers, DefaultFocusState};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {cssClasses as listCssClasses} from '@material/list/constants';\nimport {MDCMenuSurfaceFoundation} from '@material/menu-surface/foundation';\nimport {MDCMenuAdapter} from './adapter';\nimport {cssClasses, DefaultFocusState, numbers, strings} from './constants';\n\nexport class MDCMenuFoundation extends MDCFoundation<MDCMenuAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  private closeAnimationEndTimerId = 0;\n  private defaultFocusState = DefaultFocusState.LIST_ROOT;\n  private selectedIndex = -1;\n\n  /**\n   * @see {@link MDCMenuAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCMenuAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClassToElementAtIndex: () => undefined,\n      removeClassFromElementAtIndex: () => undefined,\n      addAttributeToElementAtIndex: () => undefined,\n      removeAttributeFromElementAtIndex: () => undefined,\n      elementContainsClass: () => false,\n      closeSurface: () => undefined,\n      getElementIndex: () => -1,\n      notifySelected: () => undefined,\n      getMenuItemCount: () => 0,\n      focusItemAtIndex: () => undefined,\n      focusListRoot: () => undefined,\n      getSelectedSiblingOfItemAtIndex: () => -1,\n      isSelectableItemAtIndex: () => false,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  constructor(adapter?: Partial<MDCMenuAdapter>) {\n    super({...MDCMenuFoundation.defaultAdapter, ...adapter});\n  }\n\n  destroy() {\n    if (this.closeAnimationEndTimerId) {\n      clearTimeout(this.closeAnimationEndTimerId);\n    }\n\n    this.adapter.closeSurface();\n  }\n\n  handleKeydown(evt: KeyboardEvent) {\n    const {key, keyCode} = evt;\n    const isTab = key === 'Tab' || keyCode === 9;\n\n    if (isTab) {\n      this.adapter.closeSurface(/** skipRestoreFocus */ true);\n    }\n  }\n\n  handleItemAction(listItem: Element) {\n    const index = this.adapter.getElementIndex(listItem);\n    if (index < 0) {\n      return;\n    }\n\n    this.adapter.notifySelected({index});\n    this.adapter.closeSurface();\n\n    // Wait for the menu to close before adding/removing classes that affect styles.\n    this.closeAnimationEndTimerId = setTimeout(() => {\n      // Recompute the index in case the menu contents have changed.\n      const recomputedIndex = this.adapter.getElementIndex(listItem);\n      if (recomputedIndex >= 0 &&\n          this.adapter.isSelectableItemAtIndex(recomputedIndex)) {\n        this.setSelectedIndex(recomputedIndex);\n      }\n    }, MDCMenuSurfaceFoundation.numbers.TRANSITION_CLOSE_DURATION);\n  }\n\n  handleMenuSurfaceOpened() {\n    switch (this.defaultFocusState) {\n      case DefaultFocusState.FIRST_ITEM:\n        this.adapter.focusItemAtIndex(0);\n        break;\n      case DefaultFocusState.LAST_ITEM:\n        this.adapter.focusItemAtIndex(this.adapter.getMenuItemCount() - 1);\n        break;\n      case DefaultFocusState.NONE:\n        // Do nothing.\n        break;\n      default:\n        this.adapter.focusListRoot();\n        break;\n    }\n  }\n\n  /**\n   * Sets default focus state where the menu should focus every time when menu\n   * is opened. Focuses the list root (`DefaultFocusState.LIST_ROOT`) element by\n   * default.\n   */\n  setDefaultFocusState(focusState: DefaultFocusState) {\n    this.defaultFocusState = focusState;\n  }\n\n  /** @return Index of the currently selected list item within the menu. */\n  getSelectedIndex() {\n    return this.selectedIndex;\n  }\n\n  /**\n   * Selects the list item at `index` within the menu.\n   * @param index Index of list item within the menu.\n   */\n  setSelectedIndex(index: number) {\n    this.validatedIndex(index);\n\n    if (!this.adapter.isSelectableItemAtIndex(index)) {\n      throw new Error('MDCMenuFoundation: No selection group at specified index.');\n    }\n\n    const prevSelectedIndex =\n        this.adapter.getSelectedSiblingOfItemAtIndex(index);\n    if (prevSelectedIndex >= 0) {\n      this.adapter.removeAttributeFromElementAtIndex(\n          prevSelectedIndex, strings.ARIA_CHECKED_ATTR);\n      this.adapter.removeClassFromElementAtIndex(\n          prevSelectedIndex, cssClasses.MENU_SELECTED_LIST_ITEM);\n    }\n\n    this.adapter.addClassToElementAtIndex(\n        index, cssClasses.MENU_SELECTED_LIST_ITEM);\n    this.adapter.addAttributeToElementAtIndex(\n        index, strings.ARIA_CHECKED_ATTR, 'true');\n\n    this.selectedIndex = index;\n  }\n\n  /**\n   * Sets the enabled state to isEnabled for the menu item at the given index.\n   * @param index Index of the menu item\n   * @param isEnabled The desired enabled state of the menu item.\n   */\n  setEnabled(index: number, isEnabled: boolean): void {\n    this.validatedIndex(index);\n\n    if (isEnabled) {\n      this.adapter.removeClassFromElementAtIndex(\n          index, listCssClasses.LIST_ITEM_DISABLED_CLASS);\n      this.adapter.addAttributeToElementAtIndex(\n          index, strings.ARIA_DISABLED_ATTR, 'false');\n    } else {\n      this.adapter.addClassToElementAtIndex(\n          index, listCssClasses.LIST_ITEM_DISABLED_CLASS);\n      this.adapter.addAttributeToElementAtIndex(\n          index, strings.ARIA_DISABLED_ATTR, 'true');\n    }\n  }\n\n  private validatedIndex(index: number): void {\n    const menuSize = this.adapter.getMenuItemCount();\n    const isIndexInRange = index >= 0 && index < menuSize;\n\n    if (!isIndexInRange) {\n      throw new Error('MDCMenuFoundation: No list item at specified index.');\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCMenuFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport {Corner} from '@material/menu-surface/constants'; // for backward compatibility\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Event properties used by the adapter and foundation.\n */\nexport interface MDCMenuItemEventDetail {\n  index: number;\n}\n\n/**\n * Event properties specific to the default component implementation.\n */\nexport interface MDCMenuItemComponentEventDetail extends MDCMenuItemEventDetail {\n  item: Element;\n}\n\n// Note: CustomEvent<T> is not supported by Closure Compiler.\n\nexport interface MDCMenuItemEvent extends Event {\n  readonly detail: MDCMenuItemEventDetail;\n}\n\nexport interface MDCMenuItemComponentEvent extends Event {\n  readonly detail: MDCMenuItemComponentEventDetail;\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCNotchedOutlineAdapter {\n  /**\n   * Adds a class to the root element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the root element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Sets the width style property of the notch element.\n   */\n  setNotchWidthProperty(width: number): void;\n\n  /**\n   * Removes the width style property from the notch element.\n   */\n  removeNotchWidthProperty(): void;\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCFloatingLabelFoundation} from '@material/floating-label/foundation';\nimport {MDCNotchedOutlineAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\nimport {MDCNotchedOutlineFoundation} from './foundation';\n\nexport type MDCNotchedOutlineFactory = (el: Element, foundation?: MDCNotchedOutlineFoundation) => MDCNotchedOutline;\n\nexport class MDCNotchedOutline extends MDCComponent<MDCNotchedOutlineFoundation> {\n  static attachTo(root: Element): MDCNotchedOutline {\n    return new MDCNotchedOutline(root);\n  }\n\n  private notchElement!: HTMLElement;  // assigned in initialSyncWithDOM()\n\n  initialSyncWithDOM() {\n    this.notchElement =\n        this.root.querySelector<HTMLElement>(strings.NOTCH_ELEMENT_SELECTOR)!;\n\n    const label = this.root.querySelector<HTMLElement>(\n        '.' + MDCFloatingLabelFoundation.cssClasses.ROOT);\n    if (label) {\n      label.style.transitionDuration = '0s';\n      this.root.classList.add(cssClasses.OUTLINE_UPGRADED);\n      requestAnimationFrame(() => {\n        label.style.transitionDuration = '';\n      });\n    } else {\n      this.root.classList.add(cssClasses.NO_LABEL);\n    }\n  }\n\n  /**\n   * Updates classes and styles to open the notch to the specified width.\n   * @param notchWidth The notch width in the outline.\n   */\n  notch(notchWidth: number) {\n    this.foundation.notch(notchWidth);\n  }\n\n  /**\n   * Updates classes and styles to close the notch.\n   */\n  closeNotch() {\n    this.foundation.closeNotch();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCNotchedOutlineAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      setNotchWidthProperty: (width) => {\n        this.notchElement.style.setProperty('width', width + 'px');\n      },\n      removeNotchWidthProperty: () => {\n        this.notchElement.style.removeProperty('width');\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCNotchedOutlineFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst strings = {\n  NOTCH_ELEMENT_SELECTOR: '.mdc-notched-outline__notch',\n};\n\nconst numbers = {\n  // This should stay in sync with $mdc-notched-outline-padding * 2.\n  NOTCH_ELEMENT_PADDING: 8,\n};\n\nconst cssClasses = {\n  NO_LABEL: 'mdc-notched-outline--no-label',\n  OUTLINE_NOTCHED: 'mdc-notched-outline--notched',\n  OUTLINE_UPGRADED: 'mdc-notched-outline--upgraded',\n};\n\nexport {cssClasses, numbers, strings};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCNotchedOutlineAdapter} from './adapter';\nimport {cssClasses, numbers, strings} from './constants';\n\nexport class MDCNotchedOutlineFoundation extends MDCFoundation<MDCNotchedOutlineAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  /**\n   * See {@link MDCNotchedOutlineAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCNotchedOutlineAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      setNotchWidthProperty: () => undefined,\n      removeNotchWidthProperty: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  constructor(adapter?: Partial<MDCNotchedOutlineAdapter>) {\n    super({...MDCNotchedOutlineFoundation.defaultAdapter, ...adapter});\n  }\n\n  /**\n   * Adds the outline notched selector and updates the notch width calculated based off of notchWidth.\n   */\n  notch(notchWidth: number) {\n    const {OUTLINE_NOTCHED} = MDCNotchedOutlineFoundation.cssClasses;\n\n    if (notchWidth > 0) {\n      notchWidth += numbers.NOTCH_ELEMENT_PADDING; // Add padding from left/right.\n    }\n\n    this.adapter.setNotchWidthProperty(notchWidth);\n    this.adapter.addClass(OUTLINE_NOTCHED);\n  }\n\n  /**\n   * Removes notched outline selector to close the notch in the outline.\n   */\n  closeNotch() {\n    const {OUTLINE_NOTCHED} = MDCNotchedOutlineFoundation.cssClasses;\n    this.adapter.removeClass(OUTLINE_NOTCHED);\n    this.adapter.removeNotchWidthProperty();\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCNotchedOutlineFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCRadioAdapter {\n  addClass(className: string): void;\n  removeClass(className: string): void;\n  setNativeControlDisabled(disabled: boolean): void;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {applyPassive} from '@material/dom/events';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\nimport {MDCRadioAdapter} from './adapter';\nimport {MDCRadioFoundation} from './foundation';\n\nexport class MDCRadio extends MDCComponent<MDCRadioFoundation> implements MDCRippleCapableSurface {\n  static attachTo(root: Element) {\n    return new MDCRadio(root);\n  }\n\n  get checked(): boolean {\n    return this.nativeControl.checked;\n  }\n\n  set checked(checked: boolean) {\n    this.nativeControl.checked = checked;\n  }\n\n  get disabled() {\n    return this.nativeControl.disabled;\n  }\n\n  set disabled(disabled: boolean) {\n    this.foundation.setDisabled(disabled);\n  }\n\n  get value() {\n    return this.nativeControl.value;\n  }\n\n  set value(value: string) {\n    this.nativeControl.value = value;\n  }\n\n  get ripple(): MDCRipple {\n    return this.rippleSurface;\n  }\n\n  private readonly rippleSurface: MDCRipple = this.createRipple();\n\n  destroy() {\n    this.rippleSurface.destroy();\n    super.destroy();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCRadioAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      setNativeControlDisabled: (disabled) => this.nativeControl.disabled =\n          disabled,\n    };\n    return new MDCRadioFoundation(adapter);\n  }\n\n  private createRipple(): MDCRipple {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCRippleAdapter = {\n      ...MDCRipple.createAdapter(this),\n      registerInteractionHandler: (evtType, handler) => {\n        this.nativeControl.addEventListener(evtType, handler, applyPassive());\n      },\n      deregisterInteractionHandler: (evtType, handler) => {\n        this.nativeControl.removeEventListener(\n            evtType, handler, applyPassive());\n      },\n      // Radio buttons technically go \"active\" whenever there is *any* keyboard\n      // interaction. This is not the UI we desire.\n      isSurfaceActive: () => false,\n      isUnbounded: () => true,\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCRipple(this.root, new MDCRippleFoundation(adapter));\n  }\n\n  private get nativeControl(): HTMLInputElement {\n    const {NATIVE_CONTROL_SELECTOR} = MDCRadioFoundation.strings;\n    const el =\n        this.root.querySelector<HTMLInputElement>(NATIVE_CONTROL_SELECTOR);\n    if (!el) {\n      throw new Error(`Radio component requires a ${NATIVE_CONTROL_SELECTOR} element`);\n    }\n    return el;\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst strings = {\n  NATIVE_CONTROL_SELECTOR: '.mdc-radio__native-control',\n};\n\nconst cssClasses = {\n  DISABLED: 'mdc-radio--disabled',\n  ROOT: 'mdc-radio',\n};\n\nexport {strings, cssClasses};\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCRadioAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCRadioFoundation extends MDCFoundation<MDCRadioAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCRadioAdapter {\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      setNativeControlDisabled: () => undefined,\n    };\n  }\n\n  constructor(adapter?: Partial<MDCRadioAdapter>) {\n    super({...MDCRadioFoundation.defaultAdapter, ...adapter});\n  }\n\n  setDisabled(disabled: boolean) {\n    const {DISABLED} = MDCRadioFoundation.cssClasses;\n    this.adapter.setNativeControlDisabled(disabled);\n    if (disabled) {\n      this.adapter.addClass(DISABLED);\n    } else {\n      this.adapter.removeClass(DISABLED);\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCRadioFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\nimport {MDCRipplePoint} from './types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCRippleAdapter {\n  browserSupportsCssVars(): boolean;\n\n  isUnbounded(): boolean;\n\n  isSurfaceActive(): boolean;\n\n  isSurfaceDisabled(): boolean;\n\n  addClass(className: string): void;\n\n  removeClass(className: string): void;\n\n  containsEventTarget(target: EventTarget | null): boolean;\n\n  registerInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  deregisterInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  registerDocumentInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  deregisterDocumentInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  registerResizeHandler(handler: SpecificEventListener<'resize'>): void;\n\n  deregisterResizeHandler(handler: SpecificEventListener<'resize'>): void;\n\n  updateCssVariable(varName: string, value: string | null): void;\n\n  computeBoundingRect(): ClientRect;\n\n  getWindowPageOffset(): MDCRipplePoint;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {applyPassive} from '@material/dom/events';\nimport {matches} from '@material/dom/ponyfill';\nimport {MDCRippleAdapter} from './adapter';\nimport {MDCRippleFoundation} from './foundation';\nimport {MDCRippleAttachOpts, MDCRippleCapableSurface} from './types';\nimport * as util from './util';\n\nexport type MDCRippleFactory = (el: Element, foundation?: MDCRippleFoundation) => MDCRipple;\n\nexport class MDCRipple extends MDCComponent<MDCRippleFoundation> implements MDCRippleCapableSurface {\n  static attachTo(root: Element, opts: MDCRippleAttachOpts = {isUnbounded: undefined}): MDCRipple {\n    const ripple = new MDCRipple(root);\n    // Only override unbounded behavior if option is explicitly specified\n    if (opts.isUnbounded !== undefined) {\n      ripple.unbounded = opts.isUnbounded;\n    }\n    return ripple;\n  }\n\n  static createAdapter(instance: MDCRippleCapableSurface): MDCRippleAdapter {\n    return {\n      addClass: (className) => instance.root.classList.add(className),\n      browserSupportsCssVars: () => util.supportsCssVariables(window),\n      computeBoundingRect: () => instance.root.getBoundingClientRect(),\n      containsEventTarget: (target) => instance.root.contains(target as Node),\n      deregisterDocumentInteractionHandler: (evtType, handler) =>\n          document.documentElement.removeEventListener(\n              evtType, handler, applyPassive()),\n      deregisterInteractionHandler: (evtType, handler) =>\n          (instance.root as HTMLElement)\n              .removeEventListener(evtType, handler, applyPassive()),\n      deregisterResizeHandler: (handler) =>\n          window.removeEventListener('resize', handler),\n      getWindowPageOffset: () =>\n          ({x: window.pageXOffset, y: window.pageYOffset}),\n      isSurfaceActive: () => matches(instance.root, ':active'),\n      isSurfaceDisabled: () => Boolean(instance.disabled),\n      isUnbounded: () => Boolean(instance.unbounded),\n      registerDocumentInteractionHandler: (evtType, handler) =>\n          document.documentElement.addEventListener(\n              evtType, handler, applyPassive()),\n      registerInteractionHandler: (evtType, handler) =>\n          (instance.root as HTMLElement)\n              .addEventListener(evtType, handler, applyPassive()),\n      registerResizeHandler: (handler) =>\n          window.addEventListener('resize', handler),\n      removeClass: (className) => instance.root.classList.remove(className),\n      updateCssVariable: (varName, value) =>\n          (instance.root as HTMLElement).style.setProperty(varName, value),\n    };\n  }\n\n  disabled = false;\n\n  private isUnbounded?: boolean;\n\n  get unbounded(): boolean {\n    return Boolean(this.isUnbounded);\n  }\n\n  set unbounded(unbounded: boolean) {\n    this.isUnbounded = Boolean(unbounded);\n    this.setUnbounded();\n  }\n\n  activate() {\n    this.foundation.activate();\n  }\n\n  deactivate() {\n    this.foundation.deactivate();\n  }\n\n  layout() {\n    this.foundation.layout();\n  }\n\n  getDefaultFoundation() {\n    return new MDCRippleFoundation(MDCRipple.createAdapter(this));\n  }\n\n  initialSyncWithDOM() {\n    const root = this.root as HTMLElement;\n    this.isUnbounded = 'mdcRippleIsUnbounded' in root.dataset;\n  }\n\n  /**\n   * Closure Compiler throws an access control error when directly accessing a\n   * protected or private property inside a getter/setter, like unbounded above.\n   * By accessing the protected property inside a method, we solve that problem.\n   * That's why this function exists.\n   */\n  private setUnbounded() {\n    this.foundation.setUnbounded(Boolean(this.isUnbounded));\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport const cssClasses = {\n  // Ripple is a special case where the \"root\" component is really a \"mixin\" of sorts,\n  // given that it's an 'upgrade' to an existing component. That being said it is the root\n  // CSS class that all other CSS classes derive from.\n  BG_FOCUSED: 'mdc-ripple-upgraded--background-focused',\n  FG_ACTIVATION: 'mdc-ripple-upgraded--foreground-activation',\n  FG_DEACTIVATION: 'mdc-ripple-upgraded--foreground-deactivation',\n  ROOT: 'mdc-ripple-upgraded',\n  UNBOUNDED: 'mdc-ripple-upgraded--unbounded',\n};\n\nexport const strings = {\n  VAR_FG_SCALE: '--mdc-ripple-fg-scale',\n  VAR_FG_SIZE: '--mdc-ripple-fg-size',\n  VAR_FG_TRANSLATE_END: '--mdc-ripple-fg-translate-end',\n  VAR_FG_TRANSLATE_START: '--mdc-ripple-fg-translate-start',\n  VAR_LEFT: '--mdc-ripple-left',\n  VAR_TOP: '--mdc-ripple-top',\n};\n\nexport const numbers = {\n  DEACTIVATION_TIMEOUT_MS: 225, // Corresponds to $mdc-ripple-translate-duration (i.e. activation animation duration)\n  FG_DEACTIVATION_MS: 150, // Corresponds to $mdc-ripple-fade-out-duration (i.e. deactivation animation duration)\n  INITIAL_ORIGIN_SCALE: 0.6,\n  PADDING: 10,\n  TAP_DELAY_MS: 300, // Delay between touch and simulated mouse events on touch devices\n};\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCRippleAdapter} from './adapter';\nimport {cssClasses, numbers, strings} from './constants';\nimport {MDCRipplePoint} from './types';\nimport {getNormalizedEventCoords} from './util';\n\ninterface ActivationStateType {\n  isActivated?: boolean;\n  hasDeactivationUXRun?: boolean;\n  wasActivatedByPointer?: boolean;\n  wasElementMadeActive?: boolean;\n  activationEvent?: Event;\n  isProgrammatic?: boolean;\n}\n\ninterface FgTranslationCoordinates {\n  startPoint: MDCRipplePoint;\n  endPoint: MDCRipplePoint;\n}\n\ninterface Coordinates {\n  left: number;\n  top: number;\n}\n\ninterface EventHandlerNonNull {\n  (event: Event): any;\n}\n\ntype ActivationEventType = 'touchstart' | 'pointerdown' | 'mousedown' | 'keydown';\ntype DeactivationEventType = 'touchend' | 'pointerup' | 'mouseup' | 'contextmenu';\n\n// Activation events registered on the root element of each instance for activation\nconst ACTIVATION_EVENT_TYPES: ActivationEventType[] = [\n  'touchstart', 'pointerdown', 'mousedown', 'keydown',\n];\n\n// Deactivation events registered on documentElement when a pointer-related down event occurs\nconst POINTER_DEACTIVATION_EVENT_TYPES: DeactivationEventType[] = [\n  'touchend', 'pointerup', 'mouseup', 'contextmenu',\n];\n\n// simultaneous nested activations\nlet activatedTargets: Array<EventTarget | null> = [];\n\nexport class MDCRippleFoundation extends MDCFoundation<MDCRippleAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get defaultAdapter(): MDCRippleAdapter {\n    return {\n      addClass: () => undefined,\n      browserSupportsCssVars: () => true,\n      computeBoundingRect: () => ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      containsEventTarget: () => true,\n      deregisterDocumentInteractionHandler: () => undefined,\n      deregisterInteractionHandler: () => undefined,\n      deregisterResizeHandler: () => undefined,\n      getWindowPageOffset: () => ({x: 0, y: 0}),\n      isSurfaceActive: () => true,\n      isSurfaceDisabled: () => true,\n      isUnbounded: () => true,\n      registerDocumentInteractionHandler: () => undefined,\n      registerInteractionHandler: () => undefined,\n      registerResizeHandler: () => undefined,\n      removeClass: () => undefined,\n      updateCssVariable: () => undefined,\n    };\n  }\n\n  private activationAnimationHasEnded = false;\n  private activationState: ActivationStateType;\n  private activationTimer = 0;\n  private fgDeactivationRemovalTimer = 0;\n  private fgScale = '0';\n  private frame = {width: 0, height: 0};\n  private initialSize = 0;\n  private layoutFrame = 0;\n  private maxRadius = 0;\n  private unboundedCoords: Coordinates = {left: 0, top: 0};\n\n  private readonly activationTimerCallback: () => void;\n  private readonly activateHandler: EventHandlerNonNull;\n  private readonly deactivateHandler: EventHandlerNonNull;\n  private readonly focusHandler: EventHandlerNonNull;\n  private readonly blurHandler: EventHandlerNonNull;\n  private readonly resizeHandler: EventHandlerNonNull;\n\n  private previousActivationEvent?: Event;\n\n  constructor(adapter?: Partial<MDCRippleAdapter>) {\n    super({...MDCRippleFoundation.defaultAdapter, ...adapter});\n\n    this.activationState = this.defaultActivationState();\n\n    this.activationTimerCallback = () => {\n      this.activationAnimationHasEnded = true;\n      this.runDeactivationUXLogicIfReady();\n    };\n    this.activateHandler = (e) => {\n      this.activateImpl(e);\n    };\n    this.deactivateHandler = () => {\n      this.deactivateImpl();\n    };\n    this.focusHandler = () => {\n      this.handleFocus();\n    };\n    this.blurHandler = () => {\n      this.handleBlur();\n    };\n    this.resizeHandler = () => {\n      this.layout();\n    };\n  }\n\n  init() {\n    const supportsPressRipple = this.supportsPressRipple();\n\n    this.registerRootHandlers(supportsPressRipple);\n\n    if (supportsPressRipple) {\n      const {ROOT, UNBOUNDED} = MDCRippleFoundation.cssClasses;\n      requestAnimationFrame(() => {\n        this.adapter.addClass(ROOT);\n        if (this.adapter.isUnbounded()) {\n          this.adapter.addClass(UNBOUNDED);\n          // Unbounded ripples need layout logic applied immediately to set coordinates for both shade and ripple\n          this.layoutInternal();\n        }\n      });\n    }\n  }\n\n  destroy() {\n    if (this.supportsPressRipple()) {\n      if (this.activationTimer) {\n        clearTimeout(this.activationTimer);\n        this.activationTimer = 0;\n        this.adapter.removeClass(MDCRippleFoundation.cssClasses.FG_ACTIVATION);\n      }\n\n      if (this.fgDeactivationRemovalTimer) {\n        clearTimeout(this.fgDeactivationRemovalTimer);\n        this.fgDeactivationRemovalTimer = 0;\n        this.adapter.removeClass(\n            MDCRippleFoundation.cssClasses.FG_DEACTIVATION);\n      }\n\n      const {ROOT, UNBOUNDED} = MDCRippleFoundation.cssClasses;\n      requestAnimationFrame(() => {\n        this.adapter.removeClass(ROOT);\n        this.adapter.removeClass(UNBOUNDED);\n        this.removeCssVars();\n      });\n    }\n\n    this.deregisterRootHandlers();\n    this.deregisterDeactivationHandlers();\n  }\n\n  /**\n   * @param evt Optional event containing position information.\n   */\n  activate(evt?: Event): void {\n    this.activateImpl(evt);\n  }\n\n  deactivate(): void {\n    this.deactivateImpl();\n  }\n\n  layout(): void {\n    if (this.layoutFrame) {\n      cancelAnimationFrame(this.layoutFrame);\n    }\n    this.layoutFrame = requestAnimationFrame(() => {\n      this.layoutInternal();\n      this.layoutFrame = 0;\n    });\n  }\n\n  setUnbounded(unbounded: boolean): void {\n    const {UNBOUNDED} = MDCRippleFoundation.cssClasses;\n    if (unbounded) {\n      this.adapter.addClass(UNBOUNDED);\n    } else {\n      this.adapter.removeClass(UNBOUNDED);\n    }\n  }\n\n  handleFocus(): void {\n    requestAnimationFrame(\n        () => this.adapter.addClass(MDCRippleFoundation.cssClasses.BG_FOCUSED));\n  }\n\n  handleBlur(): void {\n    requestAnimationFrame(\n        () => this.adapter.removeClass(\n            MDCRippleFoundation.cssClasses.BG_FOCUSED));\n  }\n\n  /**\n   * We compute this property so that we are not querying information about the client\n   * until the point in time where the foundation requests it. This prevents scenarios where\n   * client-side feature-detection may happen too early, such as when components are rendered on the server\n   * and then initialized at mount time on the client.\n   */\n  private supportsPressRipple(): boolean {\n    return this.adapter.browserSupportsCssVars();\n  }\n\n  private defaultActivationState(): ActivationStateType {\n    return {\n      activationEvent: undefined,\n      hasDeactivationUXRun: false,\n      isActivated: false,\n      isProgrammatic: false,\n      wasActivatedByPointer: false,\n      wasElementMadeActive: false,\n    };\n  }\n\n  /**\n   * supportsPressRipple Passed from init to save a redundant function call\n   */\n  private registerRootHandlers(supportsPressRipple: boolean) {\n    if (supportsPressRipple) {\n      for (const evtType of ACTIVATION_EVENT_TYPES) {\n        this.adapter.registerInteractionHandler(evtType, this.activateHandler);\n      }\n      if (this.adapter.isUnbounded()) {\n        this.adapter.registerResizeHandler(this.resizeHandler);\n      }\n    }\n\n    this.adapter.registerInteractionHandler('focus', this.focusHandler);\n    this.adapter.registerInteractionHandler('blur', this.blurHandler);\n  }\n\n  private registerDeactivationHandlers(evt: Event) {\n    if (evt.type === 'keydown') {\n      this.adapter.registerInteractionHandler('keyup', this.deactivateHandler);\n    } else {\n      for (const evtType of POINTER_DEACTIVATION_EVENT_TYPES) {\n        this.adapter.registerDocumentInteractionHandler(\n            evtType, this.deactivateHandler);\n      }\n    }\n  }\n\n  private deregisterRootHandlers() {\n    for (const evtType of ACTIVATION_EVENT_TYPES) {\n      this.adapter.deregisterInteractionHandler(evtType, this.activateHandler);\n    }\n    this.adapter.deregisterInteractionHandler('focus', this.focusHandler);\n    this.adapter.deregisterInteractionHandler('blur', this.blurHandler);\n\n    if (this.adapter.isUnbounded()) {\n      this.adapter.deregisterResizeHandler(this.resizeHandler);\n    }\n  }\n\n  private deregisterDeactivationHandlers() {\n    this.adapter.deregisterInteractionHandler('keyup', this.deactivateHandler);\n    for (const evtType of POINTER_DEACTIVATION_EVENT_TYPES) {\n      this.adapter.deregisterDocumentInteractionHandler(\n          evtType, this.deactivateHandler);\n    }\n  }\n\n  private removeCssVars() {\n    const rippleStrings = MDCRippleFoundation.strings;\n    const keys = Object.keys(rippleStrings) as Array<keyof typeof rippleStrings>;\n    keys.forEach((key) => {\n      if (key.indexOf('VAR_') === 0) {\n        this.adapter.updateCssVariable(rippleStrings[key], null);\n      }\n    });\n  }\n\n  private activateImpl(evt?: Event) {\n    if (this.adapter.isSurfaceDisabled()) {\n      return;\n    }\n\n    const activationState = this.activationState;\n    if (activationState.isActivated) {\n      return;\n    }\n\n    // Avoid reacting to follow-on events fired by touch device after an already-processed user interaction\n    const previousActivationEvent = this.previousActivationEvent;\n    const isSameInteraction = previousActivationEvent && evt !== undefined && previousActivationEvent.type !== evt.type;\n    if (isSameInteraction) {\n      return;\n    }\n\n    activationState.isActivated = true;\n    activationState.isProgrammatic = evt === undefined;\n    activationState.activationEvent = evt;\n    activationState.wasActivatedByPointer = activationState.isProgrammatic ? false : evt !== undefined && (\n        evt.type === 'mousedown' || evt.type === 'touchstart' || evt.type === 'pointerdown'\n    );\n\n    const hasActivatedChild = evt !== undefined &&\n        activatedTargets.length > 0 &&\n        activatedTargets.some(\n            (target) => this.adapter.containsEventTarget(target));\n    if (hasActivatedChild) {\n      // Immediately reset activation state, while preserving logic that prevents touch follow-on events\n      this.resetActivationState();\n      return;\n    }\n\n    if (evt !== undefined) {\n      activatedTargets.push(evt.target);\n      this.registerDeactivationHandlers(evt);\n    }\n\n    activationState.wasElementMadeActive = this.checkElementMadeActive(evt);\n    if (activationState.wasElementMadeActive) {\n      this.animateActivation();\n    }\n\n    requestAnimationFrame(() => {\n      // Reset array on next frame after the current event has had a chance to bubble to prevent ancestor ripples\n      activatedTargets = [];\n\n      if (!activationState.wasElementMadeActive\n          && evt !== undefined\n          && ((evt as KeyboardEvent).key === ' ' || (evt as KeyboardEvent).keyCode === 32)) {\n        // If space was pressed, try again within an rAF call to detect :active, because different UAs report\n        // active states inconsistently when they're called within event handling code:\n        // - https://bugs.chromium.org/p/chromium/issues/detail?id=635971\n        // - https://bugzilla.mozilla.org/show_bug.cgi?id=1293741\n        // We try first outside rAF to support Edge, which does not exhibit this problem, but will crash if a CSS\n        // variable is set within a rAF callback for a submit button interaction (#2241).\n        activationState.wasElementMadeActive = this.checkElementMadeActive(evt);\n        if (activationState.wasElementMadeActive) {\n          this.animateActivation();\n        }\n      }\n\n      if (!activationState.wasElementMadeActive) {\n        // Reset activation state immediately if element was not made active.\n        this.activationState = this.defaultActivationState();\n      }\n    });\n  }\n\n  private checkElementMadeActive(evt?: Event) {\n    return (evt !== undefined && evt.type === 'keydown') ?\n        this.adapter.isSurfaceActive() :\n        true;\n  }\n\n  private animateActivation() {\n    const {VAR_FG_TRANSLATE_START, VAR_FG_TRANSLATE_END} = MDCRippleFoundation.strings;\n    const {FG_DEACTIVATION, FG_ACTIVATION} = MDCRippleFoundation.cssClasses;\n    const {DEACTIVATION_TIMEOUT_MS} = MDCRippleFoundation.numbers;\n\n    this.layoutInternal();\n\n    let translateStart = '';\n    let translateEnd = '';\n\n    if (!this.adapter.isUnbounded()) {\n      const {startPoint, endPoint} = this.getFgTranslationCoordinates();\n      translateStart = `${startPoint.x}px, ${startPoint.y}px`;\n      translateEnd = `${endPoint.x}px, ${endPoint.y}px`;\n    }\n\n    this.adapter.updateCssVariable(VAR_FG_TRANSLATE_START, translateStart);\n    this.adapter.updateCssVariable(VAR_FG_TRANSLATE_END, translateEnd);\n    // Cancel any ongoing activation/deactivation animations\n    clearTimeout(this.activationTimer);\n    clearTimeout(this.fgDeactivationRemovalTimer);\n    this.rmBoundedActivationClasses();\n    this.adapter.removeClass(FG_DEACTIVATION);\n\n    // Force layout in order to re-trigger the animation.\n    this.adapter.computeBoundingRect();\n    this.adapter.addClass(FG_ACTIVATION);\n    this.activationTimer = setTimeout(() => {\n      this.activationTimerCallback();\n    }, DEACTIVATION_TIMEOUT_MS);\n  }\n\n  private getFgTranslationCoordinates(): FgTranslationCoordinates {\n    const {activationEvent, wasActivatedByPointer} = this.activationState;\n\n    let startPoint;\n    if (wasActivatedByPointer) {\n      startPoint = getNormalizedEventCoords(\n          activationEvent,\n          this.adapter.getWindowPageOffset(),\n          this.adapter.computeBoundingRect(),\n      );\n    } else {\n      startPoint = {\n        x: this.frame.width / 2,\n        y: this.frame.height / 2,\n      };\n    }\n    // Center the element around the start point.\n    startPoint = {\n      x: startPoint.x - (this.initialSize / 2),\n      y: startPoint.y - (this.initialSize / 2),\n    };\n\n    const endPoint = {\n      x: (this.frame.width / 2) - (this.initialSize / 2),\n      y: (this.frame.height / 2) - (this.initialSize / 2),\n    };\n\n    return {startPoint, endPoint};\n  }\n\n  private runDeactivationUXLogicIfReady() {\n    // This method is called both when a pointing device is released, and when the activation animation ends.\n    // The deactivation animation should only run after both of those occur.\n    const {FG_DEACTIVATION} = MDCRippleFoundation.cssClasses;\n    const {hasDeactivationUXRun, isActivated} = this.activationState;\n    const activationHasEnded = hasDeactivationUXRun || !isActivated;\n\n    if (activationHasEnded && this.activationAnimationHasEnded) {\n      this.rmBoundedActivationClasses();\n      this.adapter.addClass(FG_DEACTIVATION);\n      this.fgDeactivationRemovalTimer = setTimeout(() => {\n        this.adapter.removeClass(FG_DEACTIVATION);\n      }, numbers.FG_DEACTIVATION_MS);\n    }\n  }\n\n  private rmBoundedActivationClasses() {\n    const {FG_ACTIVATION} = MDCRippleFoundation.cssClasses;\n    this.adapter.removeClass(FG_ACTIVATION);\n    this.activationAnimationHasEnded = false;\n    this.adapter.computeBoundingRect();\n  }\n\n  private resetActivationState() {\n    this.previousActivationEvent = this.activationState.activationEvent;\n    this.activationState = this.defaultActivationState();\n    // Touch devices may fire additional events for the same interaction within a short time.\n    // Store the previous event until it's safe to assume that subsequent events are for new interactions.\n    setTimeout(\n        () => this.previousActivationEvent = undefined,\n        MDCRippleFoundation.numbers.TAP_DELAY_MS);\n  }\n\n  private deactivateImpl(): void {\n    const activationState = this.activationState;\n    // This can happen in scenarios such as when you have a keyup event that blurs the element.\n    if (!activationState.isActivated) {\n      return;\n    }\n\n    const state: ActivationStateType = {...activationState};\n\n    if (activationState.isProgrammatic) {\n      requestAnimationFrame(() => {\n        this.animateDeactivation(state);\n      });\n      this.resetActivationState();\n    } else {\n      this.deregisterDeactivationHandlers();\n      requestAnimationFrame(() => {\n        this.activationState.hasDeactivationUXRun = true;\n        this.animateDeactivation(state);\n        this.resetActivationState();\n      });\n    }\n  }\n\n  private animateDeactivation({wasActivatedByPointer, wasElementMadeActive}:\n                                  ActivationStateType) {\n    if (wasActivatedByPointer || wasElementMadeActive) {\n      this.runDeactivationUXLogicIfReady();\n    }\n  }\n\n  private layoutInternal() {\n    this.frame = this.adapter.computeBoundingRect();\n    const maxDim = Math.max(this.frame.height, this.frame.width);\n\n    // Surface diameter is treated differently for unbounded vs. bounded ripples.\n    // Unbounded ripple diameter is calculated smaller since the surface is expected to already be padded appropriately\n    // to extend the hitbox, and the ripple is expected to meet the edges of the padded hitbox (which is typically\n    // square). Bounded ripples, on the other hand, are fully expected to expand beyond the surface's longest diameter\n    // (calculated based on the diagonal plus a constant padding), and are clipped at the surface's border via\n    // `overflow: hidden`.\n    const getBoundedRadius = () => {\n      const hypotenuse = Math.sqrt(\n          Math.pow(this.frame.width, 2) + Math.pow(this.frame.height, 2));\n      return hypotenuse + MDCRippleFoundation.numbers.PADDING;\n    };\n\n    this.maxRadius = this.adapter.isUnbounded() ? maxDim : getBoundedRadius();\n\n    // Ripple is sized as a fraction of the largest dimension of the surface, then scales up using a CSS scale transform\n    const initialSize = Math.floor(maxDim * MDCRippleFoundation.numbers.INITIAL_ORIGIN_SCALE);\n    // Unbounded ripple size should always be even number to equally center align.\n    if (this.adapter.isUnbounded() && initialSize % 2 !== 0) {\n      this.initialSize = initialSize - 1;\n    } else {\n      this.initialSize = initialSize;\n    }\n    this.fgScale = `${this.maxRadius / this.initialSize}`;\n\n    this.updateLayoutCssVars();\n  }\n\n  private updateLayoutCssVars() {\n    const {\n      VAR_FG_SIZE, VAR_LEFT, VAR_TOP, VAR_FG_SCALE,\n    } = MDCRippleFoundation.strings;\n\n    this.adapter.updateCssVariable(VAR_FG_SIZE, `${this.initialSize}px`);\n    this.adapter.updateCssVariable(VAR_FG_SCALE, this.fgScale);\n\n    if (this.adapter.isUnbounded()) {\n      this.unboundedCoords = {\n        left: Math.round((this.frame.width / 2) - (this.initialSize / 2)),\n        top: Math.round((this.frame.height / 2) - (this.initialSize / 2)),\n      };\n\n      this.adapter.updateCssVariable(\n          VAR_LEFT, `${this.unboundedCoords.left}px`);\n      this.adapter.updateCssVariable(VAR_TOP, `${this.unboundedCoords.top}px`);\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCRippleFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport * as util from './util';\n\nexport {util};\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport interface MDCRipplePoint {\n  x: number;\n  y: number;\n}\n\n/**\n * Options passed in when attaching a ripple to an object.\n */\nexport interface MDCRippleAttachOpts {\n  isUnbounded?: boolean;\n}\n\n/**\n * See Material Design spec for more details on when to use ripples.\n * https://material.io/guidelines/motion/choreography.html#choreography-creation\n * unbounded Whether or not the ripple bleeds out of the bounds of the element.\n * disabled Whether or not the ripple is attached to a disabled component.\n */\nexport interface MDCRippleCapableSurface {\n  root: Element;\n  unbounded?: boolean;\n  disabled?: boolean;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\nimport {MDCRipplePoint} from './types';\n\n/**\n * Stores result from supportsCssVariables to avoid redundant processing to\n * detect CSS custom variable support.\n */\nlet supportsCssVariables_: boolean | undefined;\n\nexport function supportsCssVariables(windowObj: typeof globalThis, forceRefresh = false): boolean {\n  const {CSS} = windowObj;\n  let supportsCssVars = supportsCssVariables_;\n  if (typeof supportsCssVariables_ === 'boolean' && !forceRefresh) {\n    return supportsCssVariables_;\n  }\n\n  const supportsFunctionPresent = CSS && typeof CSS.supports === 'function';\n  if (!supportsFunctionPresent) {\n    return false;\n  }\n\n  const explicitlySupportsCssVars = CSS.supports('--css-vars', 'yes');\n  // See: https://bugs.webkit.org/show_bug.cgi?id=154669\n  // See: README section on Safari\n  const weAreFeatureDetectingSafari10plus = (\n      CSS.supports('(--css-vars: yes)') &&\n      CSS.supports('color', '#00000000')\n  );\n\n  supportsCssVars =\n      explicitlySupportsCssVars || weAreFeatureDetectingSafari10plus;\n\n  if (!forceRefresh) {\n    supportsCssVariables_ = supportsCssVars;\n  }\n  return supportsCssVars;\n}\n\nexport function getNormalizedEventCoords(evt: Event | undefined, pageOffset: MDCRipplePoint, clientRect: ClientRect):\n    MDCRipplePoint {\n  if (!evt) {\n    return {x: 0, y: 0};\n  }\n  const {x, y} = pageOffset;\n  const documentX = x + clientRect.left;\n  const documentY = y + clientRect.top;\n\n  let normalizedX;\n  let normalizedY;\n  // Determine touch point relative to the ripple container.\n  if (evt.type === 'touchstart') {\n    const touchEvent = evt as TouchEvent;\n    normalizedX = touchEvent.changedTouches[0].pageX - documentX;\n    normalizedY = touchEvent.changedTouches[0].pageY - documentY;\n  } else {\n    const mouseEvent = evt as MouseEvent;\n    normalizedX = mouseEvent.pageX - documentX;\n    normalizedY = mouseEvent.pageY - documentY;\n  }\n\n  return {x: normalizedX, y: normalizedY};\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './segmented-button/index';\nexport * from './segment/index';\nexport * from './types';\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport interface MDCSegmentedButtonSegmentAdapter {\n  /**\n   * @return Returns true if wrapping segmented button is single select\n   */\n  isSingleSelect(): boolean;\n\n  /**\n   * @param attrName Attribute of interest\n   * @return Returns segment's attribute value if it is set, otherwise returns\n   * null\n   */\n  getAttr(attrName: string): string|null;\n\n  /**\n   * Sets segment's attribute value to new value\n   *\n   * @param attrName Attribute of interest\n   * @param value New value of attribute\n   */\n  setAttr(attrName: string, value: string): void;\n\n  /**\n   * Adds css class to segment\n   *\n   * @param className Class to add\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes css class from segment\n   *\n   * @param className Class to remove\n   */\n  removeClass(className: string): void;\n\n  /**\n   * @param className Class of interest\n   * @return Returns true if segment has css class, otherwise returns false\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Emits event about segment to wrapping segmented button\n   *\n   * @param selected Represents whether segment is currently selected\n   * @event selected With detail - SegmentDetail\n   */\n  notifySelectedChange(selected: boolean): void;\n\n  /**\n   * @return Returns bounding rectangle for ripple effect\n   */\n  getRootBoundingClientRect(): ClientRect;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple, MDCRippleFactory} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\n\nimport {SegmentDetail} from '../types';\n\nimport {MDCSegmentedButtonSegmentAdapter} from './adapter';\nimport {events} from './constants';\nimport {MDCSegmentedButtonSegmentFoundation} from './foundation';\n\n/**\n * MDCSegmentedButtonSegment factory type.\n */\nexport type MDCSegmentedButtonSegmentFactory =\n    (el: Element, foundation?: MDCSegmentedButtonSegmentFoundation) =>\n        MDCSegmentedButtonSegment;\n\n/**\n * Implementation of MDCSegmentedButtonSegmentFoundation\n */\nexport class MDCSegmentedButtonSegment extends\n    MDCComponent<MDCSegmentedButtonSegmentFoundation> implements\n        MDCRippleCapableSurface {\n  get ripple(): MDCRipple {\n    return this.rippleComponent;\n  }\n\n  static attachTo(root: Element) {\n    return new MDCSegmentedButtonSegment(root);\n  }\n\n  private index!: number;            // assigned in setIndex by parent\n  private isSingleSelect!: boolean;  // assigned in setIsSingleSelect by parent\n  private rippleComponent!: MDCRipple;  // assigned in initialize\n  private handleClick!:\n      SpecificEventListener<'click'>;  // assigned in initialSyncWithDOM\n\n  initialize(\n      rippleFactory: MDCRippleFactory = (el, foundation) =>\n          new MDCRipple(el, foundation)) {\n    const rippleAdapter: MDCRippleAdapter = {\n      ...MDCRipple.createAdapter(this),\n      computeBoundingRect: () => this.foundation.getDimensions()\n    };\n    this.rippleComponent =\n        rippleFactory(this.root, new MDCRippleFoundation(rippleAdapter));\n  }\n\n  initialSyncWithDOM() {\n    this.handleClick = () => {\n      this.foundation.handleClick();\n    };\n\n    this.listen(events.CLICK, this.handleClick);\n  }\n\n  destroy() {\n    this.ripple.destroy();\n\n    this.unlisten(events.CLICK, this.handleClick);\n\n    super.destroy();\n  }\n\n  getDefaultFoundation(): MDCSegmentedButtonSegmentFoundation {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take\n    // a Partial<MDCFooAdapter>. To ensure we don't accidentally omit any\n    // methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCSegmentedButtonSegmentAdapter = {\n      isSingleSelect: () => {\n        return this.isSingleSelect;\n      },\n      getAttr: (attrName) => {\n        return this.root.getAttribute(attrName);\n      },\n      setAttr: (attrName, value) => {\n        this.root.setAttribute(attrName, value);\n      },\n      addClass: (className) => {\n        this.root.classList.add(className);\n      },\n      removeClass: (className) => {\n        this.root.classList.remove(className);\n      },\n      hasClass: (className) => {\n        return this.root.classList.contains(className);\n      },\n      notifySelectedChange: (selected) => {\n        this.emit<SegmentDetail>(\n            events.SELECTED, {\n              index: this.index,\n              selected,\n              segmentId: this.getSegmentId()\n            },\n            true /* shouldBubble */\n        );\n      },\n      getRootBoundingClientRect: () => {\n        return this.root.getBoundingClientRect();\n      }\n    };\n    return new MDCSegmentedButtonSegmentFoundation(adapter);\n  }\n\n  /**\n   * Sets segment's index value\n   *\n   * @param index Segment's index within wrapping segmented button\n   */\n  setIndex(index: number) {\n    this.index = index;\n  }\n\n  /**\n   * Sets segment's isSingleSelect value\n   *\n   * @param isSingleSelect True if wrapping segmented button is single select\n   */\n  setIsSingleSelect(isSingleSelect: boolean) {\n    this.isSingleSelect = isSingleSelect;\n  }\n\n  /**\n   * @return Returns true if segment is currently selected, otherwise returns\n   * false\n   */\n  isSelected(): boolean {\n    return this.foundation.isSelected();\n  }\n\n  /**\n   * Sets segment to be selected\n   */\n  setSelected() {\n    this.foundation.setSelected();\n  }\n\n  /**\n   * Sets segment to be not selected\n   */\n  setUnselected() {\n    this.foundation.setUnselected();\n  }\n\n  /**\n   * @return Returns segment's segmentId if it was set by client\n   */\n  getSegmentId(): string|undefined {\n    return this.foundation.getSegmentId();\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Boolean strings for segment\n */\nexport const booleans = {\n  TRUE: 'true',\n  FALSE: 'false'\n};\n\n/**\n * Attributes referenced by segment\n */\nexport const attributes = {\n  ARIA_CHECKED: 'aria-checked',\n  ARIA_PRESSED: 'aria-pressed',\n  DATA_SEGMENT_ID: 'data-segment-id'\n};\n\n/**\n * Events received or emitted by segment\n */\nexport const events = {\n  CLICK: 'click',\n  SELECTED: 'selected'\n};\n\n/**\n * Style classes for segment\n */\nexport const cssClasses = {\n  SELECTED: 'mdc-segmented-button__segment--selected'\n};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\n\nimport {MDCSegmentedButtonSegmentAdapter} from './adapter';\nimport {attributes, booleans, cssClasses} from './constants';\n\nconst emptyClientRect = {\n  bottom: 0,\n  height: 0,\n  left: 0,\n  right: 0,\n  top: 0,\n  width: 0,\n};\n\nexport class MDCSegmentedButtonSegmentFoundation extends\n    MDCFoundation<MDCSegmentedButtonSegmentAdapter> {\n  static get defaultAdapter(): MDCSegmentedButtonSegmentAdapter {\n    return {\n      isSingleSelect: () => false, getAttr: () => '', setAttr: () => undefined,\n                      addClass: () => undefined, removeClass: () => undefined,\n                      hasClass: () => false,\n                      notifySelectedChange: () => undefined,\n                      getRootBoundingClientRect: () => emptyClientRect,\n    }\n  }\n\n  constructor(adapter?: Partial<MDCSegmentedButtonSegmentAdapter>) {\n    super({...MDCSegmentedButtonSegmentFoundation.defaultAdapter, ...adapter});\n  }\n\n  /**\n   * @return Returns true if segment is currently selected, otherwise returns\n   * false\n   */\n  isSelected(): boolean {\n    return this.adapter.hasClass(cssClasses.SELECTED);\n  }\n\n  /**\n   * Sets segment to be selected\n   */\n  setSelected() {\n    this.adapter.addClass(cssClasses.SELECTED);\n    this.setAriaAttr(booleans.TRUE);\n  }\n\n  /**\n   * Sets segment to be not selected\n   */\n  setUnselected() {\n    this.adapter.removeClass(cssClasses.SELECTED);\n    this.setAriaAttr(booleans.FALSE);\n  }\n\n  /**\n   * @return Returns segment's segmentId if it was set by client\n   */\n  getSegmentId(): string|undefined {\n    return this.adapter.getAttr(attributes.DATA_SEGMENT_ID) ?? undefined;\n  }\n\n  /**\n   * Called when segment is clicked. If the wrapping segmented button is single\n   * select, doesn't allow segment to be set to not selected. Otherwise, toggles\n   * segment's selected status. Finally, emits event to wrapping segmented\n   * button.\n   *\n   * @event selected With detail - SegmentDetail\n   */\n  handleClick(): void {\n    if (this.adapter.isSingleSelect()) {\n      this.setSelected();\n    } else {\n      this.toggleSelection();\n    }\n    this.adapter.notifySelectedChange(this.isSelected());\n  }\n\n  /**\n   * @return Returns bounding rectangle for ripple effect\n   */\n  getDimensions(): ClientRect {\n    return this.adapter.getRootBoundingClientRect();\n  }\n\n  /**\n   * Sets segment from not selected to selected, or selected to not selected\n   */\n  private toggleSelection() {\n    if (this.isSelected()) {\n      this.setUnselected();\n    } else {\n      this.setSelected();\n    }\n  }\n\n  /**\n   * Sets appropriate aria attribute, based on wrapping segmented button's\n   * single selected value, to new value\n   *\n   * @param value Value that represents selected status\n   */\n  private setAriaAttr(value: string) {\n    if (this.adapter.isSingleSelect()) {\n      this.adapter.setAttr(attributes.ARIA_CHECKED, value);\n    } else {\n      this.adapter.setAttr(attributes.ARIA_PRESSED, value);\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './foundation';\nexport * from './component';\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {SegmentDetail} from '../types';\n\nexport interface MDCSegmentedButtonAdapter {\n  /**\n   * @param className Class of interest\n   * @return Returns true if segmented button has css class, otherwise returns\n   * false\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * @return Returns child segments represented as readonly list of\n   * SegmentDetails\n   */\n  getSegments(): readonly SegmentDetail[];\n\n  /**\n   * Sets identified child segment to be selected\n   *\n   * @param indexOrSegmentId Number index or string segmentId that identifies\n   * child segment\n   */\n  selectSegment(indexOrSegmentId: number|string): void;\n\n  /**\n   * Sets identified child segment to be not selected\n   *\n   * @param indexOrSegmentId Number index or string segmentId that identifies\n   * child segment\n   */\n  unselectSegment(indexOrSegmentId: number|string): void;\n\n  /**\n   * Emits event about changed child segment to client\n   *\n   * @param detail Changed child segment represented as a SegmentDetail\n   * @event change With detail - SegmentDetail\n   */\n  notifySelectedChange(detail: SegmentDetail): void;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {CustomEventListener} from '@material/base/types';\n\nimport {MDCSegmentedButtonSegment, MDCSegmentedButtonSegmentFactory} from '../segment/component';\nimport {MDCSegmentedButtonEvent, SegmentDetail} from '../types';\n\nimport {MDCSegmentedButtonAdapter} from './adapter';\nimport {events, selectors} from './constants';\nimport {MDCSegmentedButtonFoundation} from './foundation';\n\nexport class MDCSegmentedButton extends\n    MDCComponent<MDCSegmentedButtonFoundation> {\n  static attachTo(root: Element): MDCSegmentedButton {\n    return new MDCSegmentedButton(root);\n  }\n\n  get segments(): ReadonlyArray<MDCSegmentedButtonSegment> {\n    return this.segmentsList.slice();\n  }\n\n  private segmentsList!: MDCSegmentedButtonSegment[];  // assigned in initialize\n  private segmentFactory!:\n      (el: Element) => MDCSegmentedButtonSegment;  // assigned in initialize\n  private handleSelected!:\n      CustomEventListener<MDCSegmentedButtonEvent>;  // assigned in\n                                                     // initialSyncWithDOM\n\n  initialize(\n      segmentFactory: MDCSegmentedButtonSegmentFactory = (el) =>\n          new MDCSegmentedButtonSegment(el)) {\n    this.segmentFactory = segmentFactory;\n    this.segmentsList = this.instantiateSegments(this.segmentFactory);\n  }\n\n  /**\n   * @param segmentFactory Factory to create new child segments\n   * @return Returns list of child segments found in DOM\n   */\n  private instantiateSegments(segmentFactory: MDCSegmentedButtonSegmentFactory):\n      MDCSegmentedButtonSegment[] {\n    const segmentElements: Element[] =\n        [].slice.call(this.root.querySelectorAll(selectors.SEGMENT));\n    return segmentElements.map((el: Element) => segmentFactory(el));\n  }\n\n  initialSyncWithDOM() {\n    this.handleSelected = (event) => {\n      this.foundation.handleSelected(event.detail);\n    };\n    this.listen(events.SELECTED, this.handleSelected);\n\n    const isSingleSelect = this.foundation.isSingleSelect();\n    for (let i = 0; i < this.segmentsList.length; i++) {\n      const segment = this.segmentsList[i];\n      segment.setIndex(i);\n      segment.setIsSingleSelect(isSingleSelect);\n    }\n\n    const selectedSegments =\n        this.segmentsList.filter((segment) => segment.isSelected());\n    if (isSingleSelect && selectedSegments.length === 0 &&\n        this.segmentsList.length > 0) {\n      throw new Error(\n          'No segment selected in singleSelect mdc-segmented-button');\n    } else if (isSingleSelect && selectedSegments.length > 1) {\n      throw new Error(\n          'Multiple segments selected in singleSelect mdc-segmented-button');\n    }\n  }\n\n  destroy() {\n    for (const segment of this.segmentsList) {\n      segment.destroy();\n    }\n\n    this.unlisten(events.SELECTED, this.handleSelected);\n\n    super.destroy();\n  }\n\n  getDefaultFoundation(): MDCSegmentedButtonFoundation {\n    const adapter: MDCSegmentedButtonAdapter = {\n      hasClass: (className) => {\n        return this.root.classList.contains(className);\n      },\n      getSegments: () => {\n        return this.mappedSegments();\n      },\n      selectSegment: (indexOrSegmentId) => {\n        const segmentDetail = this.mappedSegments().find(\n            (detail) => detail.index === indexOrSegmentId ||\n                detail.segmentId === indexOrSegmentId);\n        if (segmentDetail) {\n          this.segmentsList[segmentDetail.index].setSelected();\n        }\n      },\n      unselectSegment: (indexOrSegmentId) => {\n        const segmentDetail = this.mappedSegments().find(\n            (detail) => detail.index === indexOrSegmentId ||\n                detail.segmentId === indexOrSegmentId);\n        if (segmentDetail) {\n          this.segmentsList[segmentDetail.index].setUnselected();\n        }\n      },\n      notifySelectedChange: (detail) => {\n        this.emit<SegmentDetail>(\n            events.CHANGE, detail, true /* shouldBubble */\n        );\n      }\n    };\n    return new MDCSegmentedButtonFoundation(adapter);\n  }\n\n  /**\n   * @return Returns readonly list of selected child segments as SegmentDetails\n   */\n  getSelectedSegments(): readonly SegmentDetail[] {\n    return this.foundation.getSelectedSegments();\n  }\n\n  /**\n   * Sets identified segment to be selected\n   *\n   * @param indexOrSegmentId Number index or string segmentId that identifies\n   * child segment\n   */\n  selectSegment(indexOrSegmentId: number|string) {\n    this.foundation.selectSegment(indexOrSegmentId);\n  }\n\n  /**\n   * Sets identified segment to be not selected\n   *\n   * @param indexOrSegmentId Number index or string segmentId that identifies\n   * child segment\n   */\n  unselectSegment(indexOrSegmentId: number|string) {\n    this.foundation.unselectSegment(indexOrSegmentId);\n  }\n\n  /**\n   * @param indexOrSegmentId Number index or string segmentId that identifies\n   * child segment\n   * @return Returns true if identified child segment is currently selected,\n   * otherwise returns false\n   */\n  isSegmentSelected(indexOrSegmentId: number|string): boolean {\n    return this.foundation.isSegmentSelected(indexOrSegmentId);\n  }\n\n  /**\n   * @return Returns child segments mapped to readonly SegmentDetail list\n   */\n  private mappedSegments(): readonly SegmentDetail[] {\n    return this.segmentsList.map(\n        (segment: MDCSegmentedButtonSegment, index: number) => {\n          return {\n            index,\n            selected: segment.isSelected(),\n            segmentId: segment.getSegmentId()\n          };\n        });\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Selectors used by segmented-button\n */\nexport const selectors = {\n  SEGMENT: '.mdc-segmented-button__segment'\n};\n\n/**\n * Events received or emitted by segmented-button\n */\nexport const events = {\n  SELECTED: 'selected',\n  CHANGE: 'change'\n};\n\n/**\n * Style classes for segmented-button\n */\nexport const cssClasses = {\n  SINGLE_SELECT: 'mdc-segmented-button--single-select'\n};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\n\nimport {SegmentDetail} from '../types';\n\nimport {MDCSegmentedButtonAdapter} from './adapter';\nimport {cssClasses} from './constants';\n\nexport class MDCSegmentedButtonFoundation extends\n    MDCFoundation<MDCSegmentedButtonAdapter> {\n  static get defaultAdapter(): MDCSegmentedButtonAdapter {\n    return {\n      hasClass: () => false, getSegments: () => [],\n                selectSegment: () => undefined,\n                unselectSegment: () => undefined,\n                notifySelectedChange: () => undefined\n    }\n  }\n\n  constructor(adapter?: Partial<MDCSegmentedButtonAdapter>) {\n    super({...MDCSegmentedButtonFoundation.defaultAdapter, ...adapter});\n  }\n\n  /**\n   * Sets identified child segment to be selected\n   *\n   * @param indexOrSegmentId Number index or string segmentId that identifies\n   * child segment\n   */\n  selectSegment(indexOrSegmentId: number|string) {\n    this.adapter.selectSegment(indexOrSegmentId);\n  }\n\n  /**\n   * Sets identified child segment to be not selected\n   *\n   * @param indexOrSegmentId Number index or string segmentId that identifies\n   * child segment\n   */\n  unselectSegment(indexOrSegmentId: number|string) {\n    this.adapter.unselectSegment(indexOrSegmentId);\n  }\n\n  /**\n   * @return Returns currently selected child segments as readonly list of\n   * SegmentDetails\n   */\n  getSelectedSegments(): readonly SegmentDetail[] {\n    return this.adapter.getSegments().filter(\n        segmentDetail => segmentDetail.selected);\n  }\n\n  /**\n   * @param indexOrSegmentId Number index or string segmentId that identifies\n   * child segment\n   * @return Returns true if identified child segment is currently selected,\n   * otherwise returns false\n   */\n  isSegmentSelected(indexOrSegmentId: number|string|undefined): boolean {\n    return this.adapter.getSegments().some(\n        segmentDetail => (segmentDetail.index === indexOrSegmentId ||\n                          segmentDetail.segmentId === indexOrSegmentId) &&\n            segmentDetail.selected);\n  }\n\n  /**\n   * @return Returns true if segmented button is single select, otherwise\n   * returns false\n   */\n  isSingleSelect(): boolean {\n    return this.adapter.hasClass(cssClasses.SINGLE_SELECT);\n  }\n\n  /**\n   * Called when child segment's selected status may have changed. If segmented\n   * button is single select, unselects all child segments other than identified\n   * child segment. Finally, emits event to client.\n   *\n   * @param detail Child segment affected represented as SegmentDetail\n   * @event change With detail - SegmentDetail\n   */\n  handleSelected(detail: SegmentDetail) {\n    if (this.isSingleSelect()) {\n      this.unselectPrevSelected(detail.index);\n    }\n    this.adapter.notifySelectedChange(detail);\n  }\n\n  /**\n   * Sets all child segments to be not selected except for child segment\n   * identified by index\n   *\n   * @param index Index of child segment to not unselect\n   */\n  private unselectPrevSelected(index: number) {\n    for (let selectedSegment of this.getSelectedSegments()) {\n      if (selectedSegment.index !== index) {\n        this.unselectSegment(selectedSegment.index);\n      }\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './foundation';\nexport * from './component';\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Event detail triggered by a click on a segment. This event detail is used\n * to alert the segment-button to the change and trigger a DOM event.\n */\nexport interface SegmentDetail {\n  index: number;\n  selected: boolean;\n  segmentId?: string;\n}\n\n/**\n * Event emitted by segment to alert the segment-button of a change in its\n * selected status.\n */\nexport interface MDCSegmentedButtonEvent extends Event {\n  readonly detail: SegmentDetail;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {Corner} from '@material/menu-surface/constants';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCSelectAdapter {\n  /**\n   * Adds class to select anchor element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the select anchor element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Returns true if the select anchor element contains the given class name.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Activates the bottom line, showing a focused state.\n   */\n  activateBottomLine(): void;\n\n  /**\n   * Deactivates the bottom line.\n   */\n  deactivateBottomLine(): void;\n\n  /**\n   * Returns true if label exists, false if it doesn't.\n   */\n  hasLabel(): boolean;\n\n  /**\n   * Floats label determined based off of the shouldFloat argument.\n   */\n  floatLabel(shouldFloat: boolean): void;\n\n  /**\n   * Returns width of label in pixels, if the label exists.\n   */\n  getLabelWidth(): number;\n\n  /**\n   * Styles the label as required, if the label exists.\n   */\n  setLabelRequired(isRequired: boolean): void;\n\n  /**\n   * Returns true if outline element exists, false if it doesn't.\n   */\n  hasOutline(): boolean;\n\n  /**\n   * Only implement if outline element exists.\n   */\n  notchOutline(labelWidth: number): void;\n\n  /**\n   * Closes notch in outline element, if the outline exists.\n   */\n  closeOutline(): void;\n\n  /**\n   * Sets the line ripple transform origin center.\n   */\n  setRippleCenter(normalizedX: number): void;\n\n  /**\n   * Emits a change event when an element is selected.\n   */\n  notifyChange(value: string): void;\n\n  /**\n   * Sets the text content of the selectedText element to the given string.\n   */\n  setSelectedText(text: string): void;\n\n  /**\n   * Returns whether the select anchor is focused.\n   */\n  isSelectAnchorFocused(): boolean;\n\n  /**\n   * Gets the given attribute on the select anchor element.\n   */\n  getSelectAnchorAttr(attr: string): string|null;\n\n  /**\n   * Sets the given attribute on the select anchor element.\n   */\n  setSelectAnchorAttr(attr: string, value: string): void;\n\n  /**\n   * Removes the given attribute on the select anchor element.\n   */\n  removeSelectAnchorAttr(attr: string): void;\n\n  // Menu-related methods ======================================================\n  /**\n   * Adds class to the menu element.\n   */\n  addMenuClass(className: string): void;\n\n  /**\n   * Removes a class from the menu element.\n   */\n  removeMenuClass(className: string): void;\n\n  /**\n   * Opens the menu.\n   */\n  openMenu(): void;\n\n  /**\n   * Closes the menu.\n   */\n  closeMenu(): void;\n\n  /**\n   * Returns the select anchor element.\n   */\n  getAnchorElement(): Element | null;\n\n  /**\n   * Sets the menu anchor element.\n   */\n  setMenuAnchorElement(anchorEl: Element): void;\n\n  /**\n   * Sets the menu anchor corner.\n   */\n  setMenuAnchorCorner(anchorCorner: Corner): void;\n\n  /**\n   * Sets whether the menu should wrap focus.\n   */\n  setMenuWrapFocus(wrapFocus: boolean): void;\n\n  /**\n   * Focuses the menu item element at the given index.\n   */\n  focusMenuItemAtIndex(index: number): void;\n\n  /**\n   * Returns the number of menu items.\n   */\n  getMenuItemCount(): number;\n\n  /**\n   * Returns an array representing the VALUE_ATTR attributes of each menu item.\n   */\n  getMenuItemValues(): string[];\n\n  /**\n   * Gets the text content of the menu item element at the given index.\n   */\n  getMenuItemTextAtIndex(index: number): string;\n\n  /**\n   * Returns the selected index.\n   */\n  getSelectedIndex(): number;\n\n  /**\n   * Sets the selected index in the menu.\n   */\n  setSelectedIndex(index: number): void;\n\n  /**\n   * Returns whether typeahead is in progress in the menu.\n   */\n  isTypeaheadInProgress(): boolean;\n\n  /**\n   * Adds a character to the list typeahead buffer and returns index of the\n   * next item in the list matching the buffer.\n   */\n  typeaheadMatchItem(nextChar: string, startingIndex: number): number;\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {CustomEventListener, SpecificEventListener} from '@material/base/types';\nimport {MDCFloatingLabel, MDCFloatingLabelFactory} from '@material/floating-label/component';\nimport {MDCLineRipple, MDCLineRippleFactory} from '@material/line-ripple/component';\nimport * as menuSurfaceConstants from '@material/menu-surface/constants';\nimport {MDCMenu, MDCMenuFactory} from '@material/menu/component';\nimport * as menuConstants from '@material/menu/constants';\nimport {MDCMenuItemEvent} from '@material/menu/types';\nimport {MDCNotchedOutline, MDCNotchedOutlineFactory} from '@material/notched-outline/component';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCSelectAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\nimport {MDCSelectFoundation} from './foundation';\nimport {MDCSelectHelperText, MDCSelectHelperTextFactory} from './helper-text/component';\nimport {MDCSelectIcon, MDCSelectIconFactory} from './icon/component';\nimport {MDCSelectEventDetail, MDCSelectFoundationMap} from './types';\n\nexport class MDCSelect extends MDCComponent<MDCSelectFoundation> {\n  static attachTo(root: Element): MDCSelect {\n    return new MDCSelect(root);\n  }\n\n  private ripple!: MDCRipple|null;\n\n  private menu!: MDCMenu;  // assigned in menuSetup()\n\n  private selectAnchor!: HTMLElement;       // assigned in initialize()\n  private selectedText!: HTMLElement;       // assigned in initialize()\n  private hiddenInput!: HTMLInputElement|null;  // assigned in initialize()\n\n  private menuElement!: Element;                  // assigned in menuSetup()\n  private menuItemValues!: string[];              // assigned in menuSetup()\n  private leadingIcon?: MDCSelectIcon;            // assigned in initialize()\n  private helperText!: MDCSelectHelperText|null;  // assigned in initialize()\n  private lineRipple!: MDCLineRipple|null;        // assigned in initialize()\n  private label!: MDCFloatingLabel|null;          // assigned in initialize()\n  private outline!: MDCNotchedOutline|null;       // assigned in initialize()\n\n  // Event handlers\n  private handleFocus!: SpecificEventListener<'focus'>;\n  private handleBlur!: SpecificEventListener<'blur'>;\n  private handleClick!: SpecificEventListener<'click'>;\n  private handleKeydown!: SpecificEventListener<'keydown'>;\n  private handleMenuOpened!: EventListener;\n  private handleMenuClosed!: EventListener;\n  private handleMenuClosing!: EventListener;\n  private handleMenuItemAction!: CustomEventListener<MDCMenuItemEvent>;\n\n  initialize(\n      labelFactory: MDCFloatingLabelFactory = (el) => new MDCFloatingLabel(el),\n      lineRippleFactory: MDCLineRippleFactory = (el) => new MDCLineRipple(el),\n      outlineFactory: MDCNotchedOutlineFactory = (el) => new MDCNotchedOutline(el),\n      menuFactory: MDCMenuFactory = (el) => new MDCMenu(el),\n      iconFactory: MDCSelectIconFactory = (el) => new MDCSelectIcon(el),\n      helperTextFactory: MDCSelectHelperTextFactory = (el) => new MDCSelectHelperText(el),\n  ) {\n    this.selectAnchor =\n        this.root.querySelector(strings.SELECT_ANCHOR_SELECTOR) as HTMLElement;\n    this.selectedText =\n        this.root.querySelector(strings.SELECTED_TEXT_SELECTOR) as HTMLElement;\n    this.hiddenInput = this.root.querySelector(strings.HIDDEN_INPUT_SELECTOR) as\n        HTMLInputElement;\n\n    if (!this.selectedText) {\n      throw new Error(\n          'MDCSelect: Missing required element: The following selector must be present: ' +\n          `'${strings.SELECTED_TEXT_SELECTOR}'`,\n      );\n    }\n\n    if (this.selectAnchor.hasAttribute(strings.ARIA_CONTROLS)) {\n      const helperTextElement = document.getElementById(\n          this.selectAnchor.getAttribute(strings.ARIA_CONTROLS)!);\n      if (helperTextElement) {\n        this.helperText = helperTextFactory(helperTextElement);\n      }\n    }\n\n    this.menuSetup(menuFactory);\n\n    const labelElement = this.root.querySelector(strings.LABEL_SELECTOR);\n    this.label = labelElement ? labelFactory(labelElement) : null;\n\n    const lineRippleElement =\n        this.root.querySelector(strings.LINE_RIPPLE_SELECTOR);\n    this.lineRipple =\n        lineRippleElement ? lineRippleFactory(lineRippleElement) : null;\n\n    const outlineElement = this.root.querySelector(strings.OUTLINE_SELECTOR);\n    this.outline = outlineElement ? outlineFactory(outlineElement) : null;\n\n    const leadingIcon = this.root.querySelector(strings.LEADING_ICON_SELECTOR);\n    if (leadingIcon) {\n      this.leadingIcon = iconFactory(leadingIcon);\n    }\n\n    if (!this.root.classList.contains(cssClasses.OUTLINED)) {\n      this.ripple = this.createRipple();\n    }\n  }\n\n  /**\n   * Initializes the select's event listeners and internal state based\n   * on the environment's state.\n   */\n  initialSyncWithDOM() {\n    this.handleFocus = () => {\n      this.foundation.handleFocus();\n    };\n    this.handleBlur = () => {\n      this.foundation.handleBlur();\n    };\n    this.handleClick = (evt) => {\n      this.selectAnchor.focus();\n      this.foundation.handleClick(this.getNormalizedXCoordinate(evt));\n    };\n    this.handleKeydown = (evt) => {\n      this.foundation.handleKeydown(evt);\n    };\n    this.handleMenuItemAction = (evt) => {\n      this.foundation.handleMenuItemAction(evt.detail.index);\n    };\n    this.handleMenuOpened = () => {\n      this.foundation.handleMenuOpened();\n    };\n    this.handleMenuClosed = () => {\n      this.foundation.handleMenuClosed();\n    };\n    this.handleMenuClosing = () => {\n      this.foundation.handleMenuClosing();\n    };\n\n    this.selectAnchor.addEventListener('focus', this.handleFocus);\n    this.selectAnchor.addEventListener('blur', this.handleBlur);\n\n    this.selectAnchor.addEventListener(\n        'click', this.handleClick as EventListener);\n\n    this.selectAnchor.addEventListener('keydown', this.handleKeydown);\n    this.menu.listen(\n        menuSurfaceConstants.strings.CLOSED_EVENT, this.handleMenuClosed);\n    this.menu.listen(\n        menuSurfaceConstants.strings.CLOSING_EVENT, this.handleMenuClosing);\n    this.menu.listen(\n        menuSurfaceConstants.strings.OPENED_EVENT, this.handleMenuOpened);\n    this.menu.listen(\n        menuConstants.strings.SELECTED_EVENT, this.handleMenuItemAction);\n\n    if (this.hiddenInput) {\n      if (this.hiddenInput.value) {\n        // If the hidden input already has a value, use it to restore the\n        // select's value. This can happen e.g. if the user goes back or (in\n        // some browsers) refreshes the page.\n        this.foundation.setValue(\n            this.hiddenInput.value, /** skipNotify */ true);\n        this.foundation.layout();\n        return;\n      }\n\n      this.hiddenInput.value = this.value;\n    }\n  }\n\n  destroy() {\n    this.selectAnchor.removeEventListener('focus', this.handleFocus);\n    this.selectAnchor.removeEventListener('blur', this.handleBlur);\n    this.selectAnchor.removeEventListener('keydown', this.handleKeydown);\n    this.selectAnchor.removeEventListener(\n        'click', this.handleClick as EventListener);\n\n    this.menu.unlisten(\n        menuSurfaceConstants.strings.CLOSED_EVENT, this.handleMenuClosed);\n    this.menu.unlisten(\n        menuSurfaceConstants.strings.OPENED_EVENT, this.handleMenuOpened);\n    this.menu.unlisten(\n        menuConstants.strings.SELECTED_EVENT, this.handleMenuItemAction);\n    this.menu.destroy();\n\n    if (this.ripple) {\n      this.ripple.destroy();\n    }\n    if (this.outline) {\n      this.outline.destroy();\n    }\n    if (this.leadingIcon) {\n      this.leadingIcon.destroy();\n    }\n    if (this.helperText) {\n      this.helperText.destroy();\n    }\n\n    super.destroy();\n  }\n\n  get value(): string {\n    return this.foundation.getValue();\n  }\n\n  set value(value: string) {\n    this.foundation.setValue(value);\n  }\n\n  setValue(value: string, skipNotify = false) {\n    this.foundation.setValue(value, skipNotify);\n  }\n\n  get selectedIndex(): number {\n    return this.foundation.getSelectedIndex();\n  }\n\n  set selectedIndex(selectedIndex: number) {\n    this.foundation.setSelectedIndex(selectedIndex, /* closeMenu */ true);\n  }\n\n  setSelectedIndex(selectedIndex: number, skipNotify = false) {\n    this.foundation.setSelectedIndex(\n        selectedIndex, /* closeMenu */ true, skipNotify);\n  }\n\n  get disabled(): boolean {\n    return this.foundation.getDisabled();\n  }\n\n  set disabled(disabled: boolean) {\n    this.foundation.setDisabled(disabled);\n    if (this.hiddenInput) {\n      this.hiddenInput.disabled = disabled;\n    }\n  }\n\n  set leadingIconAriaLabel(label: string) {\n    this.foundation.setLeadingIconAriaLabel(label);\n  }\n\n  /**\n   * Sets the text content of the leading icon.\n   */\n  set leadingIconContent(content: string) {\n    this.foundation.setLeadingIconContent(content);\n  }\n\n  /**\n   * Sets the text content of the helper text.\n   */\n  set helperTextContent(content: string) {\n    this.foundation.setHelperTextContent(content);\n  }\n\n  /**\n   * Enables or disables the default validation scheme where a required select\n   * must be non-empty. Set to false for custom validation.\n   * @param useDefaultValidation Set this to false to ignore default\n   *     validation scheme.\n   */\n  set useDefaultValidation(useDefaultValidation: boolean) {\n    this.foundation.setUseDefaultValidation(useDefaultValidation);\n  }\n\n  /**\n   * Sets the current invalid state of the select.\n   */\n  set valid(isValid: boolean) {\n    this.foundation.setValid(isValid);\n  }\n\n  /**\n   * Checks if the select is in a valid state.\n   */\n  get valid(): boolean {\n    return this.foundation.isValid();\n  }\n\n  /**\n   * Sets the control to the required state.\n   */\n  set required(isRequired: boolean) {\n    this.foundation.setRequired(isRequired);\n  }\n\n  /**\n   * Returns whether the select is required.\n   */\n  get required(): boolean {\n    return this.foundation.getRequired();\n  }\n\n  /**\n   * Re-calculates if the notched outline should be notched and if the label\n   * should float.\n   */\n  layout() {\n    this.foundation.layout();\n  }\n\n  /**\n   * Synchronizes the list of options with the state of the foundation. Call\n   * this whenever menu options are dynamically updated.\n   */\n  layoutOptions() {\n    this.foundation.layoutOptions();\n    this.menu.layout();\n    // Update cached menuItemValues for adapter.\n    this.menuItemValues =\n        this.menu.items.map((el) => el.getAttribute(strings.VALUE_ATTR) || '');\n\n    if (this.hiddenInput) {\n      this.hiddenInput.value = this.value;\n    }\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCSelectAdapter = {\n      ...this.getSelectAdapterMethods(),\n      ...this.getCommonAdapterMethods(),\n      ...this.getOutlineAdapterMethods(),\n      ...this.getLabelAdapterMethods(),\n    };\n    return new MDCSelectFoundation(adapter, this.getFoundationMap());\n  }\n\n  /**\n   * Handles setup for the menu.\n   */\n  private menuSetup(menuFactory: MDCMenuFactory) {\n    this.menuElement = this.root.querySelector(strings.MENU_SELECTOR)!;\n    this.menu = menuFactory(this.menuElement);\n    this.menu.hasTypeahead = true;\n    this.menu.singleSelection = true;\n    this.menuItemValues =\n        this.menu.items.map((el) => el.getAttribute(strings.VALUE_ATTR) || '');\n  }\n\n  private createRipple(): MDCRipple {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCRippleAdapter = {\n      ...MDCRipple.createAdapter({root: this.selectAnchor}),\n      registerInteractionHandler: (evtType, handler) => {\n        this.selectAnchor.addEventListener(evtType, handler);\n      },\n      deregisterInteractionHandler: (evtType, handler) => {\n        this.selectAnchor.removeEventListener(evtType, handler);\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCRipple(this.selectAnchor, new MDCRippleFoundation(adapter));\n  }\n\n  private getSelectAdapterMethods() {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      getMenuItemAttr: (menuItem: Element, attr: string) =>\n          menuItem.getAttribute(attr),\n      setSelectedText: (text: string) => {\n        this.selectedText.textContent = text;\n      },\n      isSelectAnchorFocused: () => document.activeElement === this.selectAnchor,\n      getSelectAnchorAttr: (attr: string) =>\n          this.selectAnchor.getAttribute(attr),\n      setSelectAnchorAttr: (attr: string, value: string) => {\n        this.selectAnchor.setAttribute(attr, value);\n      },\n      removeSelectAnchorAttr: (attr: string) => {\n        this.selectAnchor.removeAttribute(attr);\n      },\n      addMenuClass: (className: string) => {\n        this.menuElement.classList.add(className);\n      },\n      removeMenuClass: (className: string) => {\n        this.menuElement.classList.remove(className);\n      },\n      openMenu: () => {\n        this.menu.open = true;\n      },\n      closeMenu: () => {\n        this.menu.open = false;\n      },\n      getAnchorElement: () =>\n          this.root.querySelector(strings.SELECT_ANCHOR_SELECTOR)!,\n      setMenuAnchorElement: (anchorEl: HTMLElement) => {\n        this.menu.setAnchorElement(anchorEl);\n      },\n      setMenuAnchorCorner: (anchorCorner: menuSurfaceConstants.Corner) => {\n        this.menu.setAnchorCorner(anchorCorner);\n      },\n      setMenuWrapFocus: (wrapFocus: boolean) => {\n        this.menu.wrapFocus = wrapFocus;\n      },\n      getSelectedIndex: () => {\n        const index = this.menu.selectedIndex;\n        return index instanceof Array ? index[0] : index;\n      },\n      setSelectedIndex: (index: number) => {\n        this.menu.selectedIndex = index;\n      },\n      focusMenuItemAtIndex: (index: number) => {\n        (this.menu.items[index] as HTMLElement).focus();\n      },\n      getMenuItemCount: () => this.menu.items.length,\n      // Cache menu item values. layoutOptions() updates this cache.\n      getMenuItemValues: () => this.menuItemValues,\n      getMenuItemTextAtIndex: (index: number) =>\n          this.menu.getPrimaryTextAtIndex(index),\n      isTypeaheadInProgress: () => this.menu.typeaheadInProgress,\n      typeaheadMatchItem: (nextChar: string, startingIndex: number) =>\n          this.menu.typeaheadMatchItem(nextChar, startingIndex),\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private getCommonAdapterMethods() {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: (className: string) => {\n        this.root.classList.add(className);\n      },\n      removeClass: (className: string) => {\n        this.root.classList.remove(className);\n      },\n      hasClass: (className: string) => this.root.classList.contains(className),\n      setRippleCenter: (normalizedX: number) => {\n        this.lineRipple && this.lineRipple.setRippleCenter(normalizedX)\n      },\n      activateBottomLine: () => {\n        this.lineRipple && this.lineRipple.activate();\n      },\n      deactivateBottomLine: () => {\n        this.lineRipple && this.lineRipple.deactivate();\n      },\n      notifyChange: (value: string) => {\n        if (this.hiddenInput) {\n          this.hiddenInput.value = value;\n        }\n\n        const index = this.selectedIndex;\n        this.emit<MDCSelectEventDetail>(\n            strings.CHANGE_EVENT, {value, index}, true /* shouldBubble  */);\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private getOutlineAdapterMethods() {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      hasOutline: () => Boolean(this.outline),\n      notchOutline: (labelWidth: number) => {\n        this.outline && this.outline.notch(labelWidth);\n      },\n      closeOutline: () => {\n        this.outline && this.outline.closeNotch();\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private getLabelAdapterMethods() {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      hasLabel: () => !!this.label,\n      floatLabel: (shouldFloat: boolean) => {\n        this.label && this.label.float(shouldFloat);\n      },\n      getLabelWidth: () => this.label ? this.label.getWidth() : 0,\n      setLabelRequired: (isRequired: boolean) => {\n        this.label && this.label.setRequired(isRequired);\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  /**\n   * Calculates where the line ripple should start based on the x coordinate within the component.\n   */\n  private getNormalizedXCoordinate(evt: MouseEvent|TouchEvent): number {\n    const targetClientRect = (evt.target as Element).getBoundingClientRect();\n    const xCoordinate =\n        this.isTouchEvent(evt) ? evt.touches[0].clientX : evt.clientX;\n    return xCoordinate - targetClientRect.left;\n  }\n\n  private isTouchEvent(evt: MouseEvent|TouchEvent): evt is TouchEvent {\n    return Boolean((evt as TouchEvent).touches);\n  }\n\n  /**\n   * Returns a map of all subcomponents to subfoundations.\n   */\n  private getFoundationMap(): Partial<MDCSelectFoundationMap> {\n    return {\n      helperText: this.helperText ? this.helperText.foundationForSelect :\n                                    undefined,\n      leadingIcon: this.leadingIcon ? this.leadingIcon.foundationForSelect :\n                                      undefined,\n    };\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  ACTIVATED: 'mdc-select--activated',\n  DISABLED: 'mdc-select--disabled',\n  FOCUSED: 'mdc-select--focused',\n  INVALID: 'mdc-select--invalid',\n  MENU_INVALID: 'mdc-select__menu--invalid',\n  OUTLINED: 'mdc-select--outlined',\n  REQUIRED: 'mdc-select--required',\n  ROOT: 'mdc-select',\n  WITH_LEADING_ICON: 'mdc-select--with-leading-icon',\n};\n\nconst strings = {\n  ARIA_CONTROLS: 'aria-controls',\n  ARIA_DESCRIBEDBY: 'aria-describedby',\n  ARIA_SELECTED_ATTR: 'aria-selected',\n  CHANGE_EVENT: 'MDCSelect:change',\n  HIDDEN_INPUT_SELECTOR: 'input[type=\"hidden\"]',\n  LABEL_SELECTOR: '.mdc-floating-label',\n  LEADING_ICON_SELECTOR: '.mdc-select__icon',\n  LINE_RIPPLE_SELECTOR: '.mdc-line-ripple',\n  MENU_SELECTOR: '.mdc-select__menu',\n  OUTLINE_SELECTOR: '.mdc-notched-outline',\n  SELECTED_TEXT_SELECTOR: '.mdc-select__selected-text',\n  SELECT_ANCHOR_SELECTOR: '.mdc-select__anchor',\n  VALUE_ATTR: 'data-value',\n};\n\nconst numbers = {\n  LABEL_SCALE: 0.75,\n  UNSET_INDEX: -1,\n  CLICK_DEBOUNCE_TIMEOUT_MS: 330,\n};\n\nexport {cssClasses, strings, numbers};\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {KEY, normalizeKey} from '@material/dom/keyboard';\nimport {Corner} from '@material/menu-surface/constants';\n\nimport {MDCSelectAdapter} from './adapter';\nimport {cssClasses, numbers, strings} from './constants';\nimport {MDCSelectHelperTextFoundation} from './helper-text/foundation';\nimport {MDCSelectIconFoundation} from './icon/foundation';\nimport {MDCSelectFoundationMap} from './types';\n\nexport class MDCSelectFoundation extends MDCFoundation<MDCSelectAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  /**\n   * See {@link MDCSelectAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCSelectAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => false,\n      activateBottomLine: () => undefined,\n      deactivateBottomLine: () => undefined,\n      getSelectedIndex: () => -1,\n      setSelectedIndex: () => undefined,\n      hasLabel: () => false,\n      floatLabel: () => undefined,\n      getLabelWidth: () => 0,\n      setLabelRequired: () => undefined,\n      hasOutline: () => false,\n      notchOutline: () => undefined,\n      closeOutline: () => undefined,\n      setRippleCenter: () => undefined,\n      notifyChange: () => undefined,\n      setSelectedText: () => undefined,\n      isSelectAnchorFocused: () => false,\n      getSelectAnchorAttr: () => '',\n      setSelectAnchorAttr: () => undefined,\n      removeSelectAnchorAttr: () => undefined,\n      addMenuClass: () => undefined,\n      removeMenuClass: () => undefined,\n      openMenu: () => undefined,\n      closeMenu: () => undefined,\n      getAnchorElement: () => null,\n      setMenuAnchorElement: () => undefined,\n      setMenuAnchorCorner: () => undefined,\n      setMenuWrapFocus: () => undefined,\n      focusMenuItemAtIndex: () => undefined,\n      getMenuItemCount: () => 0,\n      getMenuItemValues: () => [],\n      getMenuItemTextAtIndex: () => '',\n      isTypeaheadInProgress: () => false,\n      typeaheadMatchItem: () => -1,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private readonly leadingIcon: MDCSelectIconFoundation|undefined;\n  private readonly helperText: MDCSelectHelperTextFoundation|undefined;\n\n  // Disabled state\n  private disabled = false;\n  // isMenuOpen is used to track the state of the menu by listening to the\n  // MDCMenuSurface:closed event For reference, menu.open will return false if\n  // the menu is still closing, but isMenuOpen returns false only after the menu\n  // has closed\n  private isMenuOpen = false;\n  // By default, select is invalid if it is required but no value is selected.\n  private useDefaultValidation = true;\n  private customValidity = true;\n  private lastSelectedIndex = numbers.UNSET_INDEX;\n\n  private clickDebounceTimeout = 0;\n  private recentlyClicked = false;\n\n  /* istanbul ignore next: optional argument is not a branch statement */\n  /**\n   * @param adapter\n   * @param foundationMap Map from subcomponent names to their subfoundations.\n   */\n  constructor(adapter?: Partial<MDCSelectAdapter>, foundationMap: Partial<MDCSelectFoundationMap> = {}) {\n    super({...MDCSelectFoundation.defaultAdapter, ...adapter});\n\n    this.leadingIcon = foundationMap.leadingIcon;\n    this.helperText = foundationMap.helperText;\n  }\n\n  /** Returns the index of the currently selected menu item, or -1 if none. */\n  getSelectedIndex(): number {\n    return this.adapter.getSelectedIndex();\n  }\n\n  setSelectedIndex(index: number, closeMenu = false, skipNotify = false) {\n    if (index >= this.adapter.getMenuItemCount()) {\n      return;\n    }\n\n    if (index === numbers.UNSET_INDEX) {\n      this.adapter.setSelectedText('');\n    } else {\n      this.adapter.setSelectedText(\n          this.adapter.getMenuItemTextAtIndex(index).trim());\n    }\n\n    this.adapter.setSelectedIndex(index);\n\n    if (closeMenu) {\n      this.adapter.closeMenu();\n    }\n\n    if (!skipNotify && this.lastSelectedIndex !== index) {\n      this.handleChange();\n    }\n    this.lastSelectedIndex = index;\n  }\n\n  setValue(value: string, skipNotify = false) {\n    const index = this.adapter.getMenuItemValues().indexOf(value);\n    this.setSelectedIndex(index, /** closeMenu */ false, skipNotify);\n  }\n\n  getValue() {\n    const index = this.adapter.getSelectedIndex();\n    const menuItemValues = this.adapter.getMenuItemValues();\n    return index !== numbers.UNSET_INDEX ? menuItemValues[index] : '';\n  }\n\n  getDisabled() {\n    return this.disabled;\n  }\n\n  setDisabled(isDisabled: boolean) {\n    this.disabled = isDisabled;\n    if (this.disabled) {\n      this.adapter.addClass(cssClasses.DISABLED);\n      this.adapter.closeMenu();\n    } else {\n      this.adapter.removeClass(cssClasses.DISABLED);\n    }\n\n    if (this.leadingIcon) {\n      this.leadingIcon.setDisabled(this.disabled);\n    }\n\n    if (this.disabled) {\n      // Prevent click events from focusing select. Simply pointer-events: none\n      // is not enough since screenreader clicks may bypass this.\n      this.adapter.removeSelectAnchorAttr('tabindex');\n    } else {\n      this.adapter.setSelectAnchorAttr('tabindex', '0');\n    }\n\n    this.adapter.setSelectAnchorAttr('aria-disabled', this.disabled.toString());\n  }\n\n  /** Opens the menu. */\n  openMenu() {\n    this.adapter.addClass(cssClasses.ACTIVATED);\n    this.adapter.openMenu();\n    this.isMenuOpen = true;\n    this.adapter.setSelectAnchorAttr('aria-expanded', 'true');\n  }\n\n  /**\n   * @param content Sets the content of the helper text.\n   */\n  setHelperTextContent(content: string) {\n    if (this.helperText) {\n      this.helperText.setContent(content);\n    }\n  }\n\n  /**\n   * Re-calculates if the notched outline should be notched and if the label\n   * should float.\n   */\n  layout() {\n    if (this.adapter.hasLabel()) {\n      const optionHasValue = this.getValue().length > 0;\n      const isFocused = this.adapter.hasClass(cssClasses.FOCUSED);\n      const shouldFloatAndNotch = optionHasValue || isFocused;\n      const isRequired = this.adapter.hasClass(cssClasses.REQUIRED);\n\n      this.notchOutline(shouldFloatAndNotch);\n      this.adapter.floatLabel(shouldFloatAndNotch);\n      this.adapter.setLabelRequired(isRequired);\n    }\n  }\n\n  /**\n   * Synchronizes the list of options with the state of the foundation. Call\n   * this whenever menu options are dynamically updated.\n   */\n  layoutOptions() {\n    const menuItemValues = this.adapter.getMenuItemValues();\n    const selectedIndex = menuItemValues.indexOf(this.getValue());\n    this.setSelectedIndex(\n        selectedIndex, /** closeMenu */ false, /** skipNotify */ true);\n  }\n\n  handleMenuOpened() {\n    if (this.adapter.getMenuItemValues().length === 0) {\n      return;\n    }\n\n    // Menu should open to the last selected element, should open to first menu item otherwise.\n    const selectedIndex = this.getSelectedIndex();\n    const focusItemIndex = selectedIndex >= 0 ? selectedIndex : 0;\n    this.adapter.focusMenuItemAtIndex(focusItemIndex);\n  }\n\n  handleMenuClosing() {\n    this.adapter.setSelectAnchorAttr('aria-expanded', 'false');\n  }\n\n  handleMenuClosed() {\n    this.adapter.removeClass(cssClasses.ACTIVATED);\n    this.isMenuOpen = false;\n\n    // Unfocus the select if menu is closed without a selection\n    if (!this.adapter.isSelectAnchorFocused()) {\n      this.blur();\n    }\n  }\n\n  /**\n   * Handles value changes, via change event or programmatic updates.\n   */\n  handleChange() {\n    this.layout();\n    this.adapter.notifyChange(this.getValue());\n\n    const isRequired = this.adapter.hasClass(cssClasses.REQUIRED);\n    if (isRequired && this.useDefaultValidation) {\n      this.setValid(this.isValid());\n    }\n  }\n\n  handleMenuItemAction(index: number) {\n    this.setSelectedIndex(index, /** closeMenu */ true);\n  }\n\n  /**\n   * Handles focus events from select element.\n   */\n  handleFocus() {\n    this.adapter.addClass(cssClasses.FOCUSED);\n    this.layout();\n\n    this.adapter.activateBottomLine();\n  }\n\n  /**\n   * Handles blur events from select element.\n   */\n  handleBlur() {\n    if (this.isMenuOpen) {\n      return;\n    }\n    this.blur();\n  }\n\n  handleClick(normalizedX: number) {\n    if (this.disabled || this.recentlyClicked) {\n      return;\n    }\n\n    this.setClickDebounceTimeout();\n\n    if (this.isMenuOpen) {\n      this.adapter.closeMenu();\n      return;\n    }\n\n    this.adapter.setRippleCenter(normalizedX);\n\n    this.openMenu();\n  }\n\n  /**\n   * Handles keydown events on select element. Depending on the type of\n   * character typed, does typeahead matching or opens menu.\n   */\n  handleKeydown(event: KeyboardEvent) {\n    if (this.isMenuOpen || !this.adapter.hasClass(cssClasses.FOCUSED)) {\n      return;\n    }\n\n    const isEnter = normalizeKey(event) === KEY.ENTER;\n    const isSpace = normalizeKey(event) === KEY.SPACEBAR;\n    const arrowUp = normalizeKey(event) === KEY.ARROW_UP;\n    const arrowDown = normalizeKey(event) === KEY.ARROW_DOWN;\n    const isModifier = event.ctrlKey || event.metaKey;\n    // Typeahead\n    if (!isModifier &&\n        (!isSpace && event.key && event.key.length === 1 ||\n         isSpace && this.adapter.isTypeaheadInProgress())) {\n      const key = isSpace ? ' ' : event.key;\n      const typeaheadNextIndex =\n          this.adapter.typeaheadMatchItem(key, this.getSelectedIndex());\n      if (typeaheadNextIndex >= 0) {\n        this.setSelectedIndex(typeaheadNextIndex);\n      }\n      event.preventDefault();\n      return;\n    }\n\n    if (!isEnter && !isSpace && !arrowUp && !arrowDown) {\n      return;\n    }\n\n    // Increment/decrement index as necessary and open menu.\n    if (arrowUp && this.getSelectedIndex() > 0) {\n      this.setSelectedIndex(this.getSelectedIndex() - 1);\n    } else if (\n        arrowDown &&\n        this.getSelectedIndex() < this.adapter.getMenuItemCount() - 1) {\n      this.setSelectedIndex(this.getSelectedIndex() + 1);\n    }\n\n    this.openMenu();\n    event.preventDefault();\n  }\n\n  /**\n   * Opens/closes the notched outline.\n   */\n  notchOutline(openNotch: boolean) {\n    if (!this.adapter.hasOutline()) {\n      return;\n    }\n    const isFocused = this.adapter.hasClass(cssClasses.FOCUSED);\n\n    if (openNotch) {\n      const labelScale = numbers.LABEL_SCALE;\n      const labelWidth = this.adapter.getLabelWidth() * labelScale;\n      this.adapter.notchOutline(labelWidth);\n    } else if (!isFocused) {\n      this.adapter.closeOutline();\n    }\n  }\n\n  /**\n   * Sets the aria label of the leading icon.\n   */\n  setLeadingIconAriaLabel(label: string) {\n    if (this.leadingIcon) {\n      this.leadingIcon.setAriaLabel(label);\n    }\n  }\n\n  /**\n   * Sets the text content of the leading icon.\n   */\n  setLeadingIconContent(content: string) {\n    if (this.leadingIcon) {\n      this.leadingIcon.setContent(content);\n    }\n  }\n\n  getUseDefaultValidation(): boolean {\n    return this.useDefaultValidation;\n  }\n\n  setUseDefaultValidation(useDefaultValidation: boolean) {\n    this.useDefaultValidation = useDefaultValidation;\n  }\n\n  setValid(isValid: boolean) {\n    if (!this.useDefaultValidation) {\n      this.customValidity = isValid;\n    }\n\n    this.adapter.setSelectAnchorAttr('aria-invalid', (!isValid).toString());\n    if (isValid) {\n      this.adapter.removeClass(cssClasses.INVALID);\n      this.adapter.removeMenuClass(cssClasses.MENU_INVALID);\n    } else {\n      this.adapter.addClass(cssClasses.INVALID);\n      this.adapter.addMenuClass(cssClasses.MENU_INVALID);\n    }\n\n    this.syncHelperTextValidity(isValid);\n  }\n\n  isValid() {\n    if (this.useDefaultValidation &&\n        this.adapter.hasClass(cssClasses.REQUIRED) &&\n        !this.adapter.hasClass(cssClasses.DISABLED)) {\n      // See notes for required attribute under https://www.w3.org/TR/html52/sec-forms.html#the-select-element\n      // TL;DR: Invalid if no index is selected, or if the first index is selected and has an empty value.\n      return this.getSelectedIndex() !== numbers.UNSET_INDEX &&\n          (this.getSelectedIndex() !== 0 || Boolean(this.getValue()));\n    }\n    return this.customValidity;\n  }\n\n  setRequired(isRequired: boolean) {\n    if (isRequired) {\n      this.adapter.addClass(cssClasses.REQUIRED);\n    } else {\n      this.adapter.removeClass(cssClasses.REQUIRED);\n    }\n    this.adapter.setSelectAnchorAttr('aria-required', isRequired.toString());\n    this.adapter.setLabelRequired(isRequired);\n  }\n\n  getRequired() {\n    return this.adapter.getSelectAnchorAttr('aria-required') === 'true';\n  }\n\n  init() {\n    const anchorEl = this.adapter.getAnchorElement();\n    if (anchorEl) {\n      this.adapter.setMenuAnchorElement(anchorEl);\n      this.adapter.setMenuAnchorCorner(Corner.BOTTOM_START);\n    }\n    this.adapter.setMenuWrapFocus(false);\n\n    this.setDisabled(this.adapter.hasClass(cssClasses.DISABLED));\n    this.syncHelperTextValidity(!this.adapter.hasClass(cssClasses.INVALID));\n    this.layout();\n    this.layoutOptions();\n  }\n\n  /**\n   * Unfocuses the select component.\n   */\n  private blur() {\n    this.adapter.removeClass(cssClasses.FOCUSED);\n    this.layout();\n    this.adapter.deactivateBottomLine();\n\n    const isRequired = this.adapter.hasClass(cssClasses.REQUIRED);\n    if (isRequired && this.useDefaultValidation) {\n      this.setValid(this.isValid());\n    }\n  }\n\n  private syncHelperTextValidity(isValid: boolean) {\n    if (!this.helperText) {\n      return;\n    }\n\n    this.helperText.setValidity(isValid);\n\n    const helperTextVisible = this.helperText.isVisible();\n    const helperTextId = this.helperText.getId();\n\n    if (helperTextVisible && helperTextId) {\n      this.adapter.setSelectAnchorAttr(strings.ARIA_DESCRIBEDBY, helperTextId);\n    } else {\n      // Needed because screenreaders will read labels pointed to by\n      // `aria-describedby` even if they are `aria-hidden`.\n      this.adapter.removeSelectAnchorAttr(strings.ARIA_DESCRIBEDBY);\n    }\n  }\n\n  private setClickDebounceTimeout() {\n    clearTimeout(this.clickDebounceTimeout);\n    this.clickDebounceTimeout = setTimeout(() => {\n      this.recentlyClicked = false;\n    }, numbers.CLICK_DEBOUNCE_TIMEOUT_MS);\n    this.recentlyClicked = true;\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCSelectFoundation;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCSelectHelperTextAdapter {\n  /**\n   * Adds a class to the helper text element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the helper text element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Returns whether or not the helper text element contains the given class.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Sets an attribute with a given value on the helper text element.\n   */\n  setAttr(attr: string, value: string): void;\n\n  /**\n   * Removes an attribute from the helper text element.\n   */\n  removeAttr(attr: string): void;\n\n  /**\n   * Gets an attribute from the helper text element.\n   */\n  getAttr(attr: string): string|null;\n\n  /**\n   * Sets the text content for the helper text element.\n   */\n  setContent(content: string): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCSelectHelperTextAdapter} from './adapter';\nimport {MDCSelectHelperTextFoundation} from './foundation';\n\nexport type MDCSelectHelperTextFactory =\n    (el: Element, foundation?: MDCSelectHelperTextFoundation) => MDCSelectHelperText;\n\nexport class MDCSelectHelperText extends MDCComponent<MDCSelectHelperTextFoundation> {\n  static attachTo(root: Element): MDCSelectHelperText {\n    return new MDCSelectHelperText(root);\n  }\n\n  // Provided for access by MDCSelect component\n  get foundationForSelect(): MDCSelectHelperTextFoundation {\n    return this.foundation;\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCSelectHelperTextAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      hasClass: (className) => this.root.classList.contains(className),\n      getAttr: (attr) => this.root.getAttribute(attr),\n      setAttr: (attr, value) => this.root.setAttribute(attr, value),\n      removeAttr: (attr) => this.root.removeAttribute(attr),\n      setContent: (content) => {\n        this.root.textContent = content;\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCSelectHelperTextFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst strings = {\n  ARIA_HIDDEN: 'aria-hidden',\n  ROLE: 'role',\n};\n\nconst cssClasses = {\n  HELPER_TEXT_VALIDATION_MSG: 'mdc-select-helper-text--validation-msg',\n  HELPER_TEXT_VALIDATION_MSG_PERSISTENT:\n      'mdc-select-helper-text--validation-msg-persistent',\n};\n\nexport {strings, cssClasses};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCSelectHelperTextAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCSelectHelperTextFoundation extends MDCFoundation<MDCSelectHelperTextAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  /**\n   * See {@link MDCSelectHelperTextAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCSelectHelperTextAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => false,\n      setAttr: () => undefined,\n      getAttr: () => null,\n      removeAttr: () => undefined,\n      setContent: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  constructor(adapter?: Partial<MDCSelectHelperTextAdapter>) {\n    super({...MDCSelectHelperTextFoundation.defaultAdapter, ...adapter});\n  }\n\n  /**\n   * @return The ID of the helper text, or null if none is set.\n   */\n  getId(): string|null {\n    return this.adapter.getAttr('id');\n  }\n\n  /**\n   * @return Whether the helper text is currently visible.\n   */\n  isVisible(): boolean {\n    return this.adapter.getAttr(strings.ARIA_HIDDEN) !== 'true';\n  }\n\n  /**\n   * Sets the content of the helper text field.\n   */\n  setContent(content: string) {\n    this.adapter.setContent(content);\n  }\n\n  /**\n   * Sets the helper text to act as a validation message.\n   * By default, validation messages are hidden when the select is valid and\n   * visible when the select is invalid.\n   *\n   * @param isValidation True to make the helper text act as an error validation\n   *     message.\n   */\n  setValidation(isValidation: boolean) {\n    if (isValidation) {\n      this.adapter.addClass(cssClasses.HELPER_TEXT_VALIDATION_MSG);\n    } else {\n      this.adapter.removeClass(cssClasses.HELPER_TEXT_VALIDATION_MSG);\n    }\n  }\n\n  /**\n   * Sets the persistency of the validation helper text.\n   * This keeps the validation message visible even if the select is valid,\n   * though it will be displayed in the normal (grey) color.\n   */\n  setValidationMsgPersistent(isPersistent: boolean) {\n    if (isPersistent) {\n      this.adapter.addClass(cssClasses.HELPER_TEXT_VALIDATION_MSG_PERSISTENT);\n    } else {\n      this.adapter.removeClass(\n          cssClasses.HELPER_TEXT_VALIDATION_MSG_PERSISTENT);\n    }\n  }\n\n  /**\n   * When acting as a validation message, shows/hides the helper text and\n   * triggers alerts as necessary based on the select's validity.\n   */\n  setValidity(selectIsValid: boolean) {\n    const isValidationMsg =\n        this.adapter.hasClass(cssClasses.HELPER_TEXT_VALIDATION_MSG);\n\n    if (!isValidationMsg) {\n      // Non-validating helper-text is always displayed and does not participate\n      // in validation logic.\n      return;\n    }\n\n    const isPersistentValidationMsg =\n        this.adapter.hasClass(cssClasses.HELPER_TEXT_VALIDATION_MSG_PERSISTENT);\n\n    // Validating helper text is displayed if select is invalid, unless it is\n    // set as persistent, in which case it always displays.\n    const msgShouldDisplay = !selectIsValid || isPersistentValidationMsg;\n    if (msgShouldDisplay) {\n      this.showToScreenReader();\n\n      // In addition to displaying, also trigger an alert if the select\n      // has become invalid.\n      if (!selectIsValid) {\n        this.adapter.setAttr(strings.ROLE, 'alert');\n      } else {\n        this.adapter.removeAttr(strings.ROLE);\n      }\n      return;\n    }\n\n    // Hide everything.\n    this.adapter.removeAttr(strings.ROLE);\n    this.hide();\n  }\n\n  /**\n   * Makes the helper text visible to screen readers.\n   */\n  private showToScreenReader() {\n    this.adapter.removeAttr(strings.ARIA_HIDDEN);\n  }\n\n  /**\n   * Hides the help text from screen readers.\n   */\n  private hide() {\n    this.adapter.setAttr(strings.ARIA_HIDDEN, 'true');\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCSelectHelperTextFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport {cssClasses as helperTextCssClasses, strings as helperTextStrings} from './constants';\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCSelectIconAdapter {\n  /**\n   * Gets the value of an attribute on the icon element.\n   */\n  getAttr(attr: string): string | null;\n\n  /**\n   * Sets an attribute on the icon element.\n   */\n  setAttr(attr: string, value: string): void;\n\n  /**\n   * Removes an attribute from the icon element.\n   */\n  removeAttr(attr: string): void;\n\n  /**\n   * Sets the text content of the icon element.\n   */\n  setContent(content: string): void;\n\n  /**\n   * Registers an event listener on the icon element for a given event.\n   */\n  registerInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the icon element for a given event.\n   */\n  deregisterInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Emits a custom event \"MDCSelect:icon\" denoting a user has clicked the icon.\n   */\n  notifyIconAction(): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCSelectIconAdapter} from './adapter';\nimport {MDCSelectIconFoundation} from './foundation';\n\nexport type MDCSelectIconFactory = (el: Element, foundation?: MDCSelectIconFoundation) => MDCSelectIcon;\n\nexport class MDCSelectIcon extends MDCComponent<MDCSelectIconFoundation> {\n  static attachTo(root: Element): MDCSelectIcon {\n    return new MDCSelectIcon(root);\n  }\n\n  // Provided for access by MDCSelect component\n  get foundationForSelect(): MDCSelectIconFoundation {\n    return this.foundation;\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCSelectIconAdapter = {\n      getAttr: (attr) => this.root.getAttribute(attr),\n      setAttr: (attr, value) => this.root.setAttribute(attr, value),\n      removeAttr: (attr) => this.root.removeAttribute(attr),\n      setContent: (content) => {\n        this.root.textContent = content;\n      },\n      registerInteractionHandler: (evtType, handler) =>\n          this.listen(evtType, handler),\n      deregisterInteractionHandler: (evtType, handler) =>\n          this.unlisten(evtType, handler),\n      notifyIconAction: () => this.emit(\n          MDCSelectIconFoundation.strings.ICON_EVENT, {} /* evtData */,\n          true /* shouldBubble */),\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCSelectIconFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst strings = {\n  ICON_EVENT: 'MDCSelect:icon',\n  ICON_ROLE: 'button',\n};\n\nexport {strings};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCSelectIconAdapter} from './adapter';\nimport {strings} from './constants';\n\ntype InteractionEventType = 'click' | 'keydown';\n\nconst INTERACTION_EVENTS: InteractionEventType[] = ['click', 'keydown'];\n\nexport class MDCSelectIconFoundation extends MDCFoundation<MDCSelectIconAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  /**\n   * See {@link MDCSelectIconAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCSelectIconAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      getAttr: () => null,\n      setAttr: () => undefined,\n      removeAttr: () => undefined,\n      setContent: () => undefined,\n      registerInteractionHandler: () => undefined,\n      deregisterInteractionHandler: () => undefined,\n      notifyIconAction: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private savedTabIndex: string|null = null;\n\n  // assigned in initialSyncWithDOM()\n  private readonly interactionHandler!:\n      SpecificEventListener<InteractionEventType>;\n\n  constructor(adapter?: Partial<MDCSelectIconAdapter>) {\n    super({...MDCSelectIconFoundation.defaultAdapter, ...adapter});\n\n    this.interactionHandler = (evt) => {\n      this.handleInteraction(evt);\n    };\n  }\n\n  init() {\n    this.savedTabIndex = this.adapter.getAttr('tabindex');\n\n    for (const evtType of INTERACTION_EVENTS) {\n      this.adapter.registerInteractionHandler(evtType, this.interactionHandler);\n    }\n  }\n\n  destroy() {\n    for (const evtType of INTERACTION_EVENTS) {\n      this.adapter.deregisterInteractionHandler(\n          evtType, this.interactionHandler);\n    }\n  }\n\n  setDisabled(disabled: boolean) {\n    if (!this.savedTabIndex) {\n      return;\n    }\n\n    if (disabled) {\n      this.adapter.setAttr('tabindex', '-1');\n      this.adapter.removeAttr('role');\n    } else {\n      this.adapter.setAttr('tabindex', this.savedTabIndex);\n      this.adapter.setAttr('role', strings.ICON_ROLE);\n    }\n  }\n\n  setAriaLabel(label: string) {\n    this.adapter.setAttr('aria-label', label);\n  }\n\n  setContent(content: string) {\n    this.adapter.setContent(content);\n  }\n\n  handleInteraction(evt: MouseEvent | KeyboardEvent) {\n    const isEnterKey = (evt as KeyboardEvent).key === 'Enter' || (evt as KeyboardEvent).keyCode === 13;\n    if (evt.type === 'click' || isEnterKey) {\n      this.adapter.notifyIconAction();\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCSelectIconFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport {strings as iconStrings} from './constants';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\nexport * from './helper-text/index';\nexport * from './icon/index';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCSelectHelperTextFoundation} from './helper-text/foundation';\nimport {MDCSelectIconFoundation} from './icon/foundation';\n\nexport interface MDCSelectFoundationMap {\n  leadingIcon: MDCSelectIconFoundation;\n  helperText: MDCSelectHelperTextFoundation;\n}\n\nexport interface MDCSelectEventDetail {\n  value: string;\n  index: number;\n}\n\n// Note: CustomEvent<T> is not supported by Closure Compiler.\n\nexport interface MDCSelectEvent extends Event {\n  readonly detail: MDCSelectEventDetail;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\n\nimport {Thumb, TickMark} from './types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCSliderAdapter {\n  /**\n   * @return Returns true if the slider root element has the given class.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Adds the given class to the slider root element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes the given class from the slider root element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * @return Returns the given attribute value on the slider root element.\n   */\n  getAttribute(attribute: string): string|null;\n\n  /**\n   * Adds the class to the given thumb element.\n   */\n  addThumbClass(className: string, thumb: Thumb): void;\n\n  /**\n   * Removes the class from the given thumb element.\n   */\n  removeThumbClass(className: string, thumb: Thumb): void;\n\n  /**\n   * - If thumb is `Thumb.START`, returns the value property on the start input\n   *   (for range slider variant).\n   * - If thumb is `Thumb.END`, returns the value property on the end input (or\n   *   only input for single point slider).\n   */\n  getInputValue(thumb: Thumb): string;\n\n  /**\n   * - If thumb is `Thumb.START`, sets the value property on the start input\n   *   (for range slider variant).\n   * - If thumb is `Thumb.END`, sets the value property on the end input (or\n   *   only input for single point slider).\n   */\n  setInputValue(value: string, thumb: Thumb): void;\n\n  /**\n   * - If thumb is `Thumb.START`, returns the attribute value on the start input\n   *   (for range slider variant).\n   * - If thumb is `Thumb.END`, returns the attribute value on the end input (or\n   *   only input for single point slider).\n   */\n  getInputAttribute(attribute: string, thumb: Thumb): string|null;\n\n  /**\n   * - If thumb is `Thumb.START`, sets the attribute on the start input\n   *   (for range slider variant).\n   * - If thumb is `Thumb.END`, sets the attribute on the end input (or\n   *   only input for single point slider).\n   */\n  setInputAttribute(attribute: string, value: string, thumb: Thumb): void;\n\n  /**\n   * - If thumb is `Thumb.START`, removes the attribute on the start input\n   *   (for range slider variant).\n   * - If thumb is `Thumb.END`, removes the attribute on the end input (or\n   *   only input for single point slider).\n   */\n  removeInputAttribute(attribute: string, thumb: Thumb): void;\n\n  /**\n   * - If thumb is `Thumb.START`, focuses start input (range slider variant).\n   * - If thumb is `Thumb.END`, focuses end input (or only input for single\n   *   point slider).\n   */\n  focusInput(thumb: Thumb): void;\n\n  /**\n   * @return Returns true if the given input is focused.\n   */\n  isInputFocused(thumb: Thumb): boolean;\n\n  /**\n   * @return Returns the width of the given thumb knob.\n   */\n  getThumbKnobWidth(thumb: Thumb): number;\n\n  /**\n   * @return Returns the bounding client rect of the given thumb.\n   */\n  getThumbBoundingClientRect(thumb: Thumb): ClientRect;\n\n  /**\n   * @return Returns the bounding client rect for the slider root element.\n   */\n  getBoundingClientRect(): ClientRect;\n\n  /**\n   * @return Returns true if the root element is RTL, otherwise false\n   */\n  isRTL(): boolean;\n\n  /**\n   * Sets a style property of the thumb element to the passed value.\n   * - If thumb is `Thumb.START`, sets style on the start thumb (for\n   *   range slider variant).\n   * - If thumb is `Thumb.END`, sets style on the end thumb (or only thumb\n   *   for single point slider).\n   */\n  setThumbStyleProperty(propertyName: string, value: string, thumb: Thumb):\n      void;\n\n  /**\n   * Removes the given style property from the thumb element.\n   * - If thumb is `Thumb.START`, removes style from the start thumb (for\n   *   range slider variant).\n   * - If thumb is `Thumb.END`, removes style from the end thumb (or only thumb\n   *   for single point slider).\n   */\n  removeThumbStyleProperty(propertyName: string, thumb: Thumb): void;\n\n  /**\n   * Sets a style property of the active track element to the passed value.\n   */\n  setTrackActiveStyleProperty(propertyName: string, value: string): void;\n\n  /**\n   * Removes the given style property from the active track element.\n   */\n  removeTrackActiveStyleProperty(propertyName: string): void;\n\n  /**\n   * Sets value indicator text based on the given value.\n   * - If thumb is `Thumb.START`, updates value indicator on start thumb\n   *   (for range slider variant).\n   * - If thumb is `Thumb.END`, updates value indicator on end thumb (or\n   *   only thumb for single point slider).\n   */\n  setValueIndicatorText(value: number, thumb: Thumb): void;\n\n  /**\n   * Returns a function that maps the slider value to the value of the\n   * `aria-valuetext` attribute on the thumb element. If null, the\n   * `aria-valuetext` attribute is unchanged when the value changes.\n   */\n  getValueToAriaValueTextFn(): ((value: number) => string)|null;\n\n  /**\n   * Updates tick marks container element with tick mark elements and their\n   * active/inactive classes, based on the given mappings:\n   * - TickMark.ACTIVE => `cssClasses.TICK_MARK_ACTIVE`\n   * - TickMark.INACTIVE => `cssClasses.TICK_MARK_INACTIVE`\n   */\n  updateTickMarks(tickMarks: TickMark[]): void;\n\n  /**\n   * Sets pointer capture on the slider root.\n   * https://developer.mozilla.org/en-US/docs/Web/API/Element/setPointerCapture\n   */\n  setPointerCapture(pointerId: number): void;\n\n  /**\n   * Emits a `change` event from the slider root, indicating that the value\n   * has been changed and committed on the given thumb, from a user event.\n   * Mirrors the native `change` event:\n   * https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/change_event\n   */\n  emitChangeEvent(value: number, thumb: Thumb): void;\n\n  /**\n   * Emits an `input` event from the slider root, indicating that the value\n   * has been changed on the given thumb, from a user event.\n   * Mirrors the native `input` event:\n   * https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/input_event\n   */\n  emitInputEvent(value: number, thumb: Thumb): void;\n\n  /**\n   * Emits an event on drag start, containing the current value on the\n   * thumb being dragged.\n   */\n  emitDragStartEvent(value: number, thumb: Thumb): void;\n\n  /**\n   * Emits an event on drag end, containing the final value on the\n   * thumb that was dragged.\n   */\n  emitDragEndEvent(value: number, thumb: Thumb): void;\n\n  /**\n   * Registers an event listener on the root element.\n   */\n  registerEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the root element.\n   */\n  deregisterEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Registers an event listener on the given thumb element.\n   */\n  registerThumbEventHandler<K extends EventType>(\n      thumb: Thumb, evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the given thumb element.\n   */\n  deregisterThumbEventHandler<K extends EventType>(\n      thumb: Thumb, evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Registers an event listener on the given input element.\n   */\n  registerInputEventHandler<K extends EventType>(\n      thumb: Thumb, evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the given input element.\n   */\n  deregisterInputEventHandler<K extends EventType>(\n      thumb: Thumb, evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Registers an event listener on the body element.\n   */\n  registerBodyEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the body element.\n   */\n  deregisterBodyEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Registers an event listener on the window.\n   */\n  registerWindowEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the window.\n   */\n  deregisterWindowEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {EventType, SpecificEventListener} from '@material/base/types';\nimport {applyPassive} from '@material/dom/events';\nimport {matches} from '@material/dom/ponyfill';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\n\nimport {MDCSliderAdapter} from './adapter';\nimport {cssClasses, events} from './constants';\nimport {MDCSliderFoundation} from './foundation';\nimport {MDCSliderChangeEventDetail, Thumb, TickMark} from './types';\n\n/** Vanilla JS implementation of slider component. */\nexport class MDCSlider extends MDCComponent<MDCSliderFoundation> {\n  static attachTo(root: Element, options: {skipInitialUIUpdate?:\n                                               boolean} = {}) {\n    return new MDCSlider(root, undefined, options);\n  }\n\n  root!: HTMLElement;                 // Assigned in MDCComponent constructor.\n  private inputs!: HTMLInputElement[];  // Assigned in #initialize.\n  private thumbs!: HTMLElement[];     // Assigned in #initialize.\n  private trackActive!: HTMLElement;  // Assigned in #initialize.\n  private ripples!: MDCRipple[];      // Assigned in #initialize.\n\n  private skipInitialUIUpdate = false;\n  // Function that maps a slider value to the value of the `aria-valuetext`\n  // attribute on the thumb element.\n  private valueToAriaValueTextFn: ((value: number) => string)|null = null;\n\n  getDefaultFoundation() {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same\n    // order as the adapter interface.\n    const adapter: MDCSliderAdapter = {\n      hasClass: (className) => this.root.classList.contains(className),\n      addClass: (className) => {\n        this.root.classList.add(className);\n      },\n      removeClass: (className) => {\n        this.root.classList.remove(className);\n      },\n      addThumbClass: (className, thumb: Thumb) => {\n        this.getThumbEl(thumb).classList.add(className);\n      },\n      removeThumbClass: (className, thumb: Thumb) => {\n        this.getThumbEl(thumb).classList.remove(className);\n      },\n      getAttribute: (attribute) => this.root.getAttribute(attribute),\n      getInputValue: (thumb: Thumb) => this.getInput(thumb).value,\n      setInputValue: (value: string, thumb: Thumb) => {\n        this.getInput(thumb).value = value;\n      },\n      getInputAttribute: (attribute, thumb: Thumb) =>\n          this.getInput(thumb).getAttribute(attribute),\n      setInputAttribute: (attribute, value, thumb: Thumb) => {\n        this.getInput(thumb).setAttribute(attribute, value);\n      },\n      removeInputAttribute: (attribute, thumb: Thumb) => {\n        this.getInput(thumb).removeAttribute(attribute);\n      },\n      focusInput: (thumb: Thumb) => {\n        this.getInput(thumb).focus();\n      },\n      isInputFocused: (thumb: Thumb) =>\n          this.getInput(thumb) === document.activeElement,\n      getThumbKnobWidth: (thumb: Thumb) => {\n        return this.getThumbEl(thumb)\n            .querySelector<HTMLElement>(`.${cssClasses.THUMB_KNOB}`)!\n            .getBoundingClientRect()\n            .width;\n      },\n      getThumbBoundingClientRect: (thumb: Thumb) =>\n          this.getThumbEl(thumb).getBoundingClientRect(),\n      getBoundingClientRect: () => this.root.getBoundingClientRect(),\n      isRTL: () => getComputedStyle(this.root).direction === 'rtl',\n      setThumbStyleProperty: (propertyName, value, thumb: Thumb) => {\n        this.getThumbEl(thumb).style.setProperty(propertyName, value);\n      },\n      removeThumbStyleProperty: (propertyName, thumb: Thumb) => {\n        this.getThumbEl(thumb).style.removeProperty(propertyName);\n      },\n      setTrackActiveStyleProperty: (propertyName, value) => {\n        this.trackActive.style.setProperty(propertyName, value);\n      },\n      removeTrackActiveStyleProperty: (propertyName) => {\n        this.trackActive.style.removeProperty(propertyName);\n      },\n      setValueIndicatorText: (value: number, thumb: Thumb) => {\n        const valueIndicatorEl =\n            this.getThumbEl(thumb).querySelector<HTMLElement>(\n                `.${cssClasses.VALUE_INDICATOR_TEXT}`);\n        valueIndicatorEl!.textContent = String(value);\n      },\n      getValueToAriaValueTextFn: () => this.valueToAriaValueTextFn,\n      updateTickMarks: (tickMarks: TickMark[]) => {\n        let tickMarksContainer = this.root.querySelector<HTMLElement>(\n            `.${cssClasses.TICK_MARKS_CONTAINER}`);\n        if (!tickMarksContainer) {\n          tickMarksContainer = document.createElement('div');\n          tickMarksContainer.classList.add(cssClasses.TICK_MARKS_CONTAINER);\n          const track =\n              this.root.querySelector<HTMLElement>(`.${cssClasses.TRACK}`);\n          track!.appendChild(tickMarksContainer);\n        }\n\n        if (tickMarks.length !== tickMarksContainer.children.length) {\n          tickMarksContainer.innerHTML = '';\n          this.addTickMarks(tickMarksContainer, tickMarks);\n        } else {\n          this.updateTickMarks(tickMarksContainer, tickMarks);\n        }\n      },\n      setPointerCapture: (pointerId) => {\n        this.root.setPointerCapture(pointerId);\n      },\n      emitChangeEvent: (value, thumb: Thumb) => {\n        this.emit<MDCSliderChangeEventDetail>(events.CHANGE, {value, thumb});\n      },\n      emitInputEvent: (value, thumb: Thumb) => {\n        this.emit<MDCSliderChangeEventDetail>(events.INPUT, {value, thumb});\n      },\n      emitDragStartEvent: (_, thumb: Thumb) => {\n        // Emitting event is not yet implemented. See issue:\n        // https://github.com/material-components/material-components-web/issues/6448\n\n        this.getRipple(thumb).activate();\n      },\n      emitDragEndEvent: (_, thumb: Thumb) => {\n        // Emitting event is not yet implemented. See issue:\n        // https://github.com/material-components/material-components-web/issues/6448\n\n        this.getRipple(thumb).deactivate();\n      },\n      registerEventHandler: (evtType, handler) => {\n        this.listen(evtType, handler);\n      },\n      deregisterEventHandler: (evtType, handler) => {\n        this.unlisten(evtType, handler);\n      },\n      registerThumbEventHandler: (thumb, evtType, handler) => {\n        this.getThumbEl(thumb).addEventListener(evtType, handler);\n      },\n      deregisterThumbEventHandler: (thumb, evtType, handler) => {\n        this.getThumbEl(thumb).removeEventListener(evtType, handler);\n      },\n      registerInputEventHandler: (thumb, evtType, handler) => {\n        this.getInput(thumb).addEventListener(evtType, handler);\n      },\n      deregisterInputEventHandler: (thumb, evtType, handler) => {\n        this.getInput(thumb).removeEventListener(evtType, handler);\n      },\n      registerBodyEventHandler: (evtType, handler) => {\n        document.body.addEventListener(evtType, handler);\n      },\n      deregisterBodyEventHandler: (evtType, handler) => {\n        document.body.removeEventListener(evtType, handler);\n      },\n      registerWindowEventHandler: (evtType, handler) => {\n        window.addEventListener(evtType, handler);\n      },\n      deregisterWindowEventHandler: (evtType, handler) => {\n        window.removeEventListener(evtType, handler);\n      },\n      // tslint:enable:object-literal-sort-keys\n    };\n    return new MDCSliderFoundation(adapter);\n  }\n\n  /**\n   * Initializes component, with the following options:\n   * - `skipInitialUIUpdate`: Whether to skip updating the UI when initially\n   *   syncing with the DOM. This should be enabled when the slider position\n   *   is set before component initialization.\n   */\n  initialize({skipInitialUIUpdate}: {skipInitialUIUpdate?: boolean} = {}) {\n    this.inputs =\n        [].slice.call(this.root.querySelectorAll(`.${cssClasses.INPUT}`)) as\n        HTMLInputElement[];\n    this.thumbs =\n        [].slice.call(this.root.querySelectorAll(`.${cssClasses.THUMB}`)) as\n        HTMLElement[];\n    this.trackActive =\n        this.root.querySelector(`.${cssClasses.TRACK_ACTIVE}`) as HTMLElement;\n    this.ripples = this.createRipples();\n\n    if (skipInitialUIUpdate) {\n      this.skipInitialUIUpdate = true;\n    }\n  }\n\n  initialSyncWithDOM() {\n    this.foundation.layout({skipUpdateUI: this.skipInitialUIUpdate});\n  }\n\n  /** Redraws UI based on DOM (e.g. element dimensions, RTL). */\n  layout() {\n    this.foundation.layout();\n  }\n\n  getValueStart(): number {\n    return this.foundation.getValueStart();\n  }\n\n  setValueStart(valueStart: number) {\n    this.foundation.setValueStart(valueStart);\n  }\n\n  getValue(): number {\n    return this.foundation.getValue();\n  }\n\n  setValue(value: number) {\n    this.foundation.setValue(value);\n  }\n\n  /** @return Slider disabled state. */\n  getDisabled(): boolean {\n    return this.foundation.getDisabled();\n  }\n\n  /** Sets slider disabled state. */\n  setDisabled(disabled: boolean) {\n    this.foundation.setDisabled(disabled);\n  }\n\n  /**\n   * Sets a function that maps the slider value to the value of the\n   * `aria-valuetext` attribute on the thumb element.\n   */\n  setValueToAriaValueTextFn(mapFn: ((value: number) => string)|null) {\n    this.valueToAriaValueTextFn = mapFn;\n  }\n\n  private getThumbEl(thumb: Thumb) {\n    return thumb === Thumb.END ? this.thumbs[this.thumbs.length - 1] :\n                                 this.thumbs[0];\n  }\n\n  private getInput(thumb: Thumb) {\n    return thumb === Thumb.END ? this.inputs[this.inputs.length - 1] :\n                                 this.inputs[0];\n  }\n\n  private getRipple(thumb: Thumb) {\n    return thumb === Thumb.END ? this.ripples[this.ripples.length - 1] :\n                                 this.ripples[0];\n  }\n\n  /** Adds tick mark elements to the given container. */\n  private addTickMarks(tickMarkContainer: HTMLElement, tickMarks: TickMark[]) {\n    const fragment = document.createDocumentFragment();\n    for (let i = 0; i < tickMarks.length; i++) {\n      const div = document.createElement('div');\n      const tickMarkClass = tickMarks[i] === TickMark.ACTIVE ?\n          cssClasses.TICK_MARK_ACTIVE :\n          cssClasses.TICK_MARK_INACTIVE;\n      div.classList.add(tickMarkClass);\n      fragment.appendChild(div);\n    }\n    tickMarkContainer.appendChild(fragment);\n  }\n\n  /** Updates tick mark elements' classes in the given container. */\n  private updateTickMarks(\n      tickMarkContainer: HTMLElement, tickMarks: TickMark[]) {\n    const tickMarkEls = Array.from(tickMarkContainer.children);\n    for (let i = 0; i < tickMarkEls.length; i++) {\n      if (tickMarks[i] === TickMark.ACTIVE) {\n        tickMarkEls[i].classList.add(cssClasses.TICK_MARK_ACTIVE);\n        tickMarkEls[i].classList.remove(cssClasses.TICK_MARK_INACTIVE);\n      } else {\n        tickMarkEls[i].classList.add(cssClasses.TICK_MARK_INACTIVE);\n        tickMarkEls[i].classList.remove(cssClasses.TICK_MARK_ACTIVE);\n      }\n    }\n  }\n\n  /** Initializes thumb ripples. */\n  private createRipples(): MDCRipple[] {\n    const ripples = [];\n    const rippleSurfaces = [].slice.call(\n        this.root.querySelectorAll<HTMLElement>(`.${cssClasses.THUMB}`));\n    for (let i = 0; i < rippleSurfaces.length; i++) {\n      const rippleSurface = rippleSurfaces[i] as HTMLElement;\n      // Use the corresponding input as the focus source for the ripple (i.e.\n      // when the input is focused, the ripple is in the focused state).\n      const input = this.inputs[i];\n\n      const adapter: MDCRippleAdapter = {\n        ...MDCRipple.createAdapter(this),\n        addClass: (className: string) => {\n          rippleSurface.classList.add(className);\n        },\n        computeBoundingRect: () => rippleSurface.getBoundingClientRect(),\n        deregisterInteractionHandler: <K extends EventType>(\n            evtType: K, handler: SpecificEventListener<K>) => {\n          input.removeEventListener(evtType, handler);\n        },\n        isSurfaceActive: () => matches(input, ':active'),\n        isUnbounded: () => true,\n        registerInteractionHandler: <K extends EventType>(\n            evtType: K, handler: SpecificEventListener<K>) => {\n          input.addEventListener(evtType, handler, applyPassive());\n        },\n        removeClass: (className: string) => {\n          rippleSurface.classList.remove(className);\n        },\n        updateCssVariable: (varName: string, value: string) => {\n          rippleSurface.style.setProperty(varName, value);\n        },\n      };\n\n      const ripple =\n          new MDCRipple(rippleSurface, new MDCRippleFoundation(adapter));\n      ripple.unbounded = true;\n      ripples.push(ripple);\n    }\n\n    return ripples;\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** Slider element classes. */\nexport const cssClasses = {\n  DISABLED: 'mdc-slider--disabled',\n  DISCRETE: 'mdc-slider--discrete',\n  INPUT: 'mdc-slider__input',\n  RANGE: 'mdc-slider--range',\n  THUMB: 'mdc-slider__thumb',\n  // Applied when thumb is in the focused state.\n  THUMB_FOCUSED: 'mdc-slider__thumb--focused',\n  THUMB_KNOB: 'mdc-slider__thumb-knob',\n  // Class added to the top thumb (for overlapping thumbs in range slider).\n  THUMB_TOP: 'mdc-slider__thumb--top',\n  THUMB_WITH_INDICATOR: 'mdc-slider__thumb--with-indicator',\n  TICK_MARKS: 'mdc-slider--tick-marks',\n  TICK_MARKS_CONTAINER: 'mdc-slider__tick-marks',\n  TICK_MARK_ACTIVE: 'mdc-slider__tick-mark--active',\n  TICK_MARK_INACTIVE: 'mdc-slider__tick-mark--inactive',\n  TRACK: 'mdc-slider__track',\n  // The active track fill element that will be scaled as the value changes.\n  TRACK_ACTIVE: 'mdc-slider__track--active_fill',\n  VALUE_INDICATOR_TEXT: 'mdc-slider__value-indicator-text',\n};\n\n/** Slider numbers. */\nexport const numbers = {\n  // Default step size.\n  STEP_SIZE: 1,\n  // Minimum absolute difference between clientX of move event / down event\n  // for which to update thumb, in the case of overlapping thumbs.\n  // This is needed to reduce chances of choosing the thumb based on\n  // pointer jitter.\n  THUMB_UPDATE_MIN_PX: 5,\n};\n\n/** Slider attributes. */\nexport const attributes = {\n  ARIA_VALUETEXT: 'aria-valuetext',\n  INPUT_DISABLED: 'disabled',\n  INPUT_MIN: 'min',\n  INPUT_MAX: 'max',\n  INPUT_VALUE: 'value',\n  INPUT_STEP: 'step',\n};\n\n/** Slider events. */\nexport const events = {\n  CHANGE: 'MDCSlider:change',\n  INPUT: 'MDCSlider:input',\n};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {AnimationFrame} from '@material/animation/animationframe';\nimport {getCorrectPropertyName} from '@material/animation/util';\nimport {MDCFoundation} from '@material/base/foundation';\nimport {SpecificEventListener} from '@material/base/types';\n\nimport {MDCSliderAdapter} from './adapter';\nimport {attributes, cssClasses, numbers} from './constants';\nimport {Thumb, TickMark} from './types';\n\nenum AnimationKeys {\n  SLIDER_UPDATE = 'slider_update'\n}\n\n// Accessing `window` without a `typeof` check will throw on Node environments.\nconst HAS_WINDOW = typeof window !== 'undefined';\n\n/**\n * Foundation class for slider. Responsibilities include:\n * - Updating slider values (internal state and DOM updates) based on client\n *   'x' position.\n * - Updating DOM after slider property updates (e.g. min, max).\n */\nexport class MDCSliderFoundation extends MDCFoundation<MDCSliderAdapter> {\n  static SUPPORTS_POINTER_EVENTS = HAS_WINDOW && Boolean(window.PointerEvent) &&\n      // #setPointerCapture is buggy on iOS, so we can't use pointer events\n      // until the following bug is fixed:\n      // https://bugs.webkit.org/show_bug.cgi?id=220196\n      !isIOS();\n\n  // Whether the initial styles (to position the thumb, before component\n  // initialization) have been removed.\n  private initialStylesRemoved = false;\n\n  private min!: number;  // Assigned in init()\n  private max!: number;  // Assigned in init()\n  // If `isRange`, this is the value of Thumb.START. Otherwise, defaults to min.\n  private valueStart!: number;  // Assigned in init()\n  // If `isRange`, this it the value of Thumb.END. Otherwise, it is the\n  // value of the single thumb.\n  private value!: number;     // Assigned in init()\n  private rect!: ClientRect;  // Assigned in layout() via init()\n\n  private isDisabled = false;\n\n  private isDiscrete = false;\n  private step = numbers.STEP_SIZE;\n  // Number of digits after the decimal point to round to, when computing\n  // values. This is based on the step size by default and is used to\n  // avoid floating point precision errors in JS.\n  private numDecimalPlaces!: number;  // Assigned in init()\n  private hasTickMarks = false;\n\n  // The following properties are only set for range sliders.\n  private isRange = false;\n  // Tracks the thumb being moved across a slider pointer interaction (down,\n  // move event).\n  private thumb: Thumb|null = null;\n  // `clientX` from the most recent down event. Used in subsequent move\n  // events to determine which thumb to move (in the case of\n  // overlapping thumbs).\n  private downEventClientX: number|null = null;\n  // `valueStart` before the most recent down event. Used in subsequent up\n  // events to determine whether to fire the `change` event.\n  private valueStartBeforeDownEvent!: number;  // Assigned in init()\n  // `value` before the most recent down event. Used in subsequent up\n  // events to determine whether to fire the `change` event.\n  private valueBeforeDownEvent!: number;  // Assigned in init()\n  // Width of the start thumb knob.\n  private startThumbKnobWidth = 0;\n  // Width of the end thumb knob.\n  private endThumbKnobWidth = 0;\n\n  private readonly animFrame: AnimationFrame;\n\n  // Assigned in #initialize.\n  private mousedownOrTouchstartListener!:\n      SpecificEventListener<'mousedown'|'touchstart'>;\n  // Assigned in #initialize.\n  private moveListener!:\n      SpecificEventListener<'pointermove'|'mousemove'|'touchmove'>;\n  private pointerdownListener!:\n      SpecificEventListener<'pointerdown'>;  // Assigned in #initialize.\n  private pointerupListener!:\n      SpecificEventListener<'pointerup'>;  // Assigned in #initialize.\n  private thumbMouseenterListener!:\n      SpecificEventListener<'mouseenter'>;  // Assigned in #initialize.\n  private thumbMouseleaveListener!:\n      SpecificEventListener<'mouseleave'>;  // Assigned in #initialize.\n  private inputStartChangeListener!:\n      SpecificEventListener<'change'>;  // Assigned in #initialize.\n  private inputEndChangeListener!:\n      SpecificEventListener<'change'>;  // Assigned in #initialize.\n  private inputStartFocusListener!:\n      SpecificEventListener<'focus'>;  // Assigned in #initialize.\n  private inputEndFocusListener!:\n      SpecificEventListener<'focus'>;  // Assigned in #initialize.\n  private inputStartBlurListener!:\n      SpecificEventListener<'blur'>;  // Assigned in #initialize.\n  private inputEndBlurListener!:\n      SpecificEventListener<'blur'>;  // Assigned in #initialize.\n  private resizeListener!:\n      SpecificEventListener<'resize'>;  // Assigned in #initialize.\n\n  constructor(adapter?: Partial<MDCSliderAdapter>) {\n    super({...MDCSliderFoundation.defaultAdapter, ...adapter});\n\n    this.animFrame = new AnimationFrame();\n  }\n\n  static get defaultAdapter(): MDCSliderAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same\n    // order as the adapter interface.\n    return {\n      hasClass: () => false,\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      addThumbClass: () => undefined,\n      removeThumbClass: () => undefined,\n      getAttribute: () => null,\n      getInputValue: () => '',\n      setInputValue: () => undefined,\n      getInputAttribute: () => null,\n      setInputAttribute: () => null,\n      removeInputAttribute: () => null,\n      focusInput: () => undefined,\n      isInputFocused: () => false,\n      getThumbKnobWidth: () => 0,\n      getThumbBoundingClientRect: () =>\n          ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      getBoundingClientRect: () =>\n          ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      isRTL: () => false,\n      setThumbStyleProperty: () => undefined,\n      removeThumbStyleProperty: () => undefined,\n      setTrackActiveStyleProperty: () => undefined,\n      removeTrackActiveStyleProperty: () => undefined,\n      setValueIndicatorText: () => undefined,\n      getValueToAriaValueTextFn: () => null,\n      updateTickMarks: () => undefined,\n      setPointerCapture: () => undefined,\n      emitChangeEvent: () => undefined,\n      emitInputEvent: () => undefined,\n      emitDragStartEvent: () => undefined,\n      emitDragEndEvent: () => undefined,\n      registerEventHandler: () => undefined,\n      deregisterEventHandler: () => undefined,\n      registerThumbEventHandler: () => undefined,\n      deregisterThumbEventHandler: () => undefined,\n      registerInputEventHandler: () => undefined,\n      deregisterInputEventHandler: () => undefined,\n      registerBodyEventHandler: () => undefined,\n      deregisterBodyEventHandler: () => undefined,\n      registerWindowEventHandler: () => undefined,\n      deregisterWindowEventHandler: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  init() {\n    this.isDisabled = this.adapter.hasClass(cssClasses.DISABLED);\n    this.isDiscrete = this.adapter.hasClass(cssClasses.DISCRETE);\n    this.hasTickMarks = this.adapter.hasClass(cssClasses.TICK_MARKS);\n    this.isRange = this.adapter.hasClass(cssClasses.RANGE);\n\n    const min = this.convertAttributeValueToNumber(\n        this.adapter.getInputAttribute(\n            attributes.INPUT_MIN, this.isRange ? Thumb.START : Thumb.END),\n        attributes.INPUT_MIN);\n    const max = this.convertAttributeValueToNumber(\n        this.adapter.getInputAttribute(attributes.INPUT_MAX, Thumb.END),\n        attributes.INPUT_MAX);\n    const value = this.convertAttributeValueToNumber(\n        this.adapter.getInputAttribute(attributes.INPUT_VALUE, Thumb.END),\n        attributes.INPUT_VALUE);\n    const valueStart = this.isRange ?\n        this.convertAttributeValueToNumber(\n            this.adapter.getInputAttribute(attributes.INPUT_VALUE, Thumb.START),\n            attributes.INPUT_VALUE) :\n        min;\n    const stepAttr =\n        this.adapter.getInputAttribute(attributes.INPUT_STEP, Thumb.END);\n    const step = stepAttr ?\n        this.convertAttributeValueToNumber(stepAttr, attributes.INPUT_STEP) :\n        this.step;\n\n    this.validateProperties({min, max, value, valueStart, step});\n\n    this.min = min;\n    this.max = max;\n    this.value = value;\n    this.valueStart = valueStart;\n    this.step = step;\n    this.numDecimalPlaces = getNumDecimalPlaces(this.step);\n\n    this.valueBeforeDownEvent = value;\n    this.valueStartBeforeDownEvent = valueStart;\n\n    this.mousedownOrTouchstartListener =\n        this.handleMousedownOrTouchstart.bind(this);\n    this.moveListener = this.handleMove.bind(this);\n    this.pointerdownListener = this.handlePointerdown.bind(this);\n    this.pointerupListener = this.handlePointerup.bind(this);\n    this.thumbMouseenterListener = this.handleThumbMouseenter.bind(this);\n    this.thumbMouseleaveListener = this.handleThumbMouseleave.bind(this);\n    this.inputStartChangeListener = () => {\n      this.handleInputChange(Thumb.START);\n    };\n    this.inputEndChangeListener = () => {\n      this.handleInputChange(Thumb.END);\n    };\n    this.inputStartFocusListener = () => {\n      this.handleInputFocus(Thumb.START);\n    };\n    this.inputEndFocusListener = () => {\n      this.handleInputFocus(Thumb.END);\n    };\n    this.inputStartBlurListener = () => {\n      this.handleInputBlur(Thumb.START);\n    };\n    this.inputEndBlurListener = () => {\n      this.handleInputBlur(Thumb.END);\n    };\n    this.resizeListener = this.handleResize.bind(this);\n    this.registerEventHandlers();\n  }\n\n  destroy() {\n    this.deregisterEventHandlers();\n  }\n\n  setMin(value: number) {\n    this.min = value;\n    if (!this.isRange) {\n      this.valueStart = value;\n    }\n    this.updateUI();\n  }\n\n  setMax(value: number) {\n    this.max = value;\n    this.updateUI();\n  }\n\n  getMin() {\n    return this.min;\n  }\n\n  getMax() {\n    return this.max;\n  }\n\n  /**\n   * - For single point sliders, returns the thumb value.\n   * - For range (two-thumb) sliders, returns the end thumb's value.\n   */\n  getValue() {\n    return this.value;\n  }\n\n  /**\n   * - For single point sliders, sets the thumb value.\n   * - For range (two-thumb) sliders, sets the end thumb's value.\n   */\n  setValue(value: number) {\n    if (this.isRange && value < this.valueStart) {\n      throw new Error(\n          `end thumb value (${value}) must be >= start thumb ` +\n          `value (${this.valueStart})`);\n    }\n\n    this.updateValue(value, Thumb.END);\n  }\n\n  /**\n   * Only applicable for range sliders.\n   * @return The start thumb's value.\n   */\n  getValueStart() {\n    if (!this.isRange) {\n      throw new Error('`valueStart` is only applicable for range sliders.');\n    }\n\n    return this.valueStart;\n  }\n\n  /**\n   * Only applicable for range sliders. Sets the start thumb's value.\n   */\n  setValueStart(valueStart: number) {\n    if (!this.isRange) {\n      throw new Error('`valueStart` is only applicable for range sliders.');\n    }\n    if (this.isRange && valueStart > this.value) {\n      throw new Error(\n          `start thumb value (${valueStart}) must be <= end thumb ` +\n          `value (${this.value})`);\n    }\n\n    this.updateValue(valueStart, Thumb.START);\n  }\n\n  setStep(value: number) {\n    this.step = value;\n    this.numDecimalPlaces = getNumDecimalPlaces(value);\n\n    this.updateUI();\n  }\n\n  setIsDiscrete(value: boolean) {\n    this.isDiscrete = value;\n    this.updateValueIndicatorUI();\n    this.updateTickMarksUI();\n  }\n\n  getStep() {\n    return this.step;\n  }\n\n  setHasTickMarks(value: boolean) {\n    this.hasTickMarks = value;\n    this.updateTickMarksUI();\n  }\n\n  getDisabled() {\n    return this.isDisabled;\n  }\n\n  /**\n   * Sets disabled state, including updating styles and thumb tabindex.\n   */\n  setDisabled(disabled: boolean) {\n    this.isDisabled = disabled;\n\n    if (disabled) {\n      this.adapter.addClass(cssClasses.DISABLED);\n\n      if (this.isRange) {\n        this.adapter.setInputAttribute(\n            attributes.INPUT_DISABLED, '', Thumb.START);\n      }\n      this.adapter.setInputAttribute(attributes.INPUT_DISABLED, '', Thumb.END);\n    } else {\n      this.adapter.removeClass(cssClasses.DISABLED);\n\n      if (this.isRange) {\n        this.adapter.removeInputAttribute(\n            attributes.INPUT_DISABLED, Thumb.START);\n      }\n      this.adapter.removeInputAttribute(attributes.INPUT_DISABLED, Thumb.END);\n    }\n  }\n\n  /** @return Whether the slider is a range slider. */\n  getIsRange() {\n    return this.isRange;\n  }\n\n  /**\n   * - Syncs slider boundingClientRect with the current DOM.\n   * - Updates UI based on internal state.\n   */\n  layout({skipUpdateUI}: {skipUpdateUI?: boolean} = {}) {\n    this.rect = this.adapter.getBoundingClientRect();\n    if (this.isRange) {\n      this.startThumbKnobWidth = this.adapter.getThumbKnobWidth(Thumb.START);\n      this.endThumbKnobWidth = this.adapter.getThumbKnobWidth(Thumb.END);\n    }\n\n    if (!skipUpdateUI) {\n      this.updateUI();\n    }\n  }\n\n  /** Handles resize events on the window. */\n  handleResize() {\n    this.layout();\n  }\n\n  /**\n   * Handles pointer down events on the slider root element.\n   */\n  handleDown(event: PointerEvent|MouseEvent|TouchEvent) {\n    if (this.isDisabled) return;\n\n    this.valueStartBeforeDownEvent = this.valueStart;\n    this.valueBeforeDownEvent = this.value;\n\n    const clientX = (event as MouseEvent).clientX != null ?\n        (event as MouseEvent).clientX :\n        (event as TouchEvent).targetTouches[0].clientX;\n    this.downEventClientX = clientX;\n    const value = this.mapClientXOnSliderScale(clientX);\n    this.thumb = this.getThumbFromDownEvent(clientX, value);\n    if (this.thumb === null) return;\n\n    this.handleDragStart(event, value, this.thumb);\n    this.updateValue(value, this.thumb, {emitInputEvent: true});\n  }\n\n  /**\n   * Handles pointer move events on the slider root element.\n   */\n  handleMove(event: PointerEvent|MouseEvent|TouchEvent) {\n    if (this.isDisabled) return;\n\n    // Prevent scrolling.\n    event.preventDefault();\n\n    const clientX = (event as MouseEvent).clientX != null ?\n        (event as MouseEvent).clientX :\n        (event as TouchEvent).targetTouches[0].clientX;\n    const dragAlreadyStarted = this.thumb != null;\n    this.thumb = this.getThumbFromMoveEvent(clientX);\n    if (this.thumb === null) return;\n\n    const value = this.mapClientXOnSliderScale(clientX);\n    if (!dragAlreadyStarted) {\n      this.handleDragStart(event, value, this.thumb);\n      this.adapter.emitDragStartEvent(value, this.thumb);\n    }\n    this.updateValue(value, this.thumb, {emitInputEvent: true});\n  }\n\n  /**\n   * Handles pointer up events on the slider root element.\n   */\n  handleUp() {\n    if (this.isDisabled || this.thumb === null) return;\n\n    const oldValue = this.thumb === Thumb.START ?\n        this.valueStartBeforeDownEvent :\n        this.valueBeforeDownEvent;\n    const newValue = this.thumb === Thumb.START ? this.valueStart : this.value;\n    if (oldValue !== newValue) {\n      this.adapter.emitChangeEvent(newValue, this.thumb);\n    }\n\n    this.adapter.emitDragEndEvent(newValue, this.thumb);\n    this.thumb = null;\n  }\n\n  /**\n   * For range, discrete slider, shows the value indicator on both thumbs.\n   */\n  handleThumbMouseenter() {\n    if (!this.isDiscrete || !this.isRange) return;\n\n    this.adapter.addThumbClass(cssClasses.THUMB_WITH_INDICATOR, Thumb.START);\n    this.adapter.addThumbClass(cssClasses.THUMB_WITH_INDICATOR, Thumb.END);\n  }\n\n  /**\n   * For range, discrete slider, hides the value indicator on both thumbs.\n   */\n  handleThumbMouseleave() {\n    if (!this.isDiscrete || !this.isRange) return;\n    if (this.adapter.isInputFocused(Thumb.START) ||\n        this.adapter.isInputFocused(Thumb.END)) {\n      // Leave value indicator shown if either input is focused.\n      return;\n    }\n\n    this.adapter.removeThumbClass(cssClasses.THUMB_WITH_INDICATOR, Thumb.START);\n    this.adapter.removeThumbClass(cssClasses.THUMB_WITH_INDICATOR, Thumb.END);\n  }\n\n  handleMousedownOrTouchstart(event: MouseEvent|TouchEvent) {\n    const moveEventType =\n        event.type === 'mousedown' ? 'mousemove' : 'touchmove';\n    // After a down event on the slider root, listen for move events on\n    // body (so the slider value is updated for events outside of the\n    // slider root).\n    this.adapter.registerBodyEventHandler(moveEventType, this.moveListener);\n\n    const upHandler = () => {\n      this.handleUp();\n\n      // Once the drag is finished (up event on body), remove the move\n      // handler.\n      this.adapter.deregisterBodyEventHandler(moveEventType, this.moveListener);\n\n      // Also stop listening for subsequent up events.\n      this.adapter.deregisterEventHandler('mouseup', upHandler);\n      this.adapter.deregisterEventHandler('touchend', upHandler);\n    };\n\n    this.adapter.registerBodyEventHandler('mouseup', upHandler);\n    this.adapter.registerBodyEventHandler('touchend', upHandler);\n\n    this.handleDown(event);\n  }\n\n  handlePointerdown(event: PointerEvent) {\n    this.adapter.setPointerCapture(event.pointerId);\n    this.adapter.registerEventHandler('pointermove', this.moveListener);\n\n    this.handleDown(event);\n  }\n\n  /**\n   * Handles input `change` event by setting internal slider value to match\n   * input's new value.\n   */\n  handleInputChange(thumb: Thumb) {\n    const value = Number(this.adapter.getInputValue(thumb));\n    if (thumb === Thumb.START) {\n      this.setValueStart(value);\n    } else {\n      this.setValue(value);\n    }\n\n    this.adapter.emitChangeEvent(\n        thumb === Thumb.START ? this.valueStart : this.value, thumb);\n    this.adapter.emitInputEvent(\n        thumb === Thumb.START ? this.valueStart : this.value, thumb);\n  }\n\n  /** Shows activated state and value indicator on thumb(s). */\n  handleInputFocus(thumb: Thumb) {\n    this.adapter.addThumbClass(cssClasses.THUMB_FOCUSED, thumb);\n    if (!this.isDiscrete) return;\n\n    this.adapter.addThumbClass(cssClasses.THUMB_WITH_INDICATOR, thumb);\n    if (this.isRange) {\n      const otherThumb = thumb === Thumb.START ? Thumb.END : Thumb.START;\n      this.adapter.addThumbClass(cssClasses.THUMB_WITH_INDICATOR, otherThumb);\n    }\n  }\n\n  /** Removes activated state and value indicator from thumb(s). */\n  handleInputBlur(thumb: Thumb) {\n    this.adapter.removeThumbClass(cssClasses.THUMB_FOCUSED, thumb);\n    if (!this.isDiscrete) return;\n\n    this.adapter.removeThumbClass(cssClasses.THUMB_WITH_INDICATOR, thumb);\n    if (this.isRange) {\n      const otherThumb = thumb === Thumb.START ? Thumb.END : Thumb.START;\n      this.adapter.removeThumbClass(\n          cssClasses.THUMB_WITH_INDICATOR, otherThumb);\n    }\n  }\n\n  /**\n   * Emits custom dragStart event, along with focusing the underlying input.\n   */\n  private handleDragStart(\n      event: PointerEvent|MouseEvent|TouchEvent, value: number, thumb: Thumb) {\n    this.adapter.focusInput(thumb);\n    // Prevent the input (that we just focused) from losing focus.\n    event.preventDefault();\n\n    this.adapter.emitDragStartEvent(value, thumb);\n  }\n\n  /**\n   * @return The thumb to be moved based on initial down event.\n   */\n  private getThumbFromDownEvent(clientX: number, value: number): Thumb|null {\n    // For single point slider, thumb to be moved is always the END (only)\n    // thumb.\n    if (!this.isRange) return Thumb.END;\n\n    // Check if event press point is in the bounds of any thumb.\n    const thumbStartRect = this.adapter.getThumbBoundingClientRect(Thumb.START);\n    const thumbEndRect = this.adapter.getThumbBoundingClientRect(Thumb.END);\n    const inThumbStartBounds =\n        clientX >= thumbStartRect.left && clientX <= thumbStartRect.right;\n    const inThumbEndBounds =\n        clientX >= thumbEndRect.left && clientX <= thumbEndRect.right;\n\n    if (inThumbStartBounds && inThumbEndBounds) {\n      // Thumbs overlapping. Thumb to be moved cannot be determined yet.\n      return null;\n    }\n\n    // If press is in bounds for either thumb on down event, that's the thumb\n    // to be moved.\n    if (inThumbStartBounds) {\n      return Thumb.START;\n    }\n    if (inThumbEndBounds) {\n      return Thumb.END;\n    }\n\n    // For presses outside the range, return whichever thumb is closer.\n    if (value < this.valueStart) {\n      return Thumb.START;\n    }\n    if (value > this.value) {\n      return Thumb.END;\n    }\n\n    // For presses inside the range, return whichever thumb is closer.\n    return (value - this.valueStart <= this.value - value) ? Thumb.START :\n                                                             Thumb.END;\n  }\n\n  /**\n   * @return The thumb to be moved based on move event (based on drag\n   *     direction from original down event). Only applicable if thumbs\n   *     were overlapping in the down event.\n   */\n  private getThumbFromMoveEvent(clientX: number): Thumb|null {\n    // Thumb has already been chosen.\n    if (this.thumb !== null) return this.thumb;\n\n    if (this.downEventClientX === null) {\n      throw new Error('`downEventClientX` is null after move event.');\n    }\n\n    const moveDistanceUnderThreshold =\n        Math.abs(this.downEventClientX - clientX) < numbers.THUMB_UPDATE_MIN_PX;\n    if (moveDistanceUnderThreshold) return this.thumb;\n\n    const draggedThumbToLeft = clientX < this.downEventClientX;\n    if (draggedThumbToLeft) {\n      return this.adapter.isRTL() ? Thumb.END : Thumb.START;\n    } else {\n      return this.adapter.isRTL() ? Thumb.START : Thumb.END;\n    }\n  }\n\n  /**\n   * Updates UI based on internal state.\n   * @param thumb Thumb whose value is being updated. If undefined, UI is\n   *     updated for both thumbs based on current internal state.\n   */\n  private updateUI(thumb?: Thumb) {\n    this.updateThumbAndInputAttributes(thumb);\n    this.updateThumbAndTrackUI(thumb);\n    this.updateValueIndicatorUI(thumb);\n    this.updateTickMarksUI();\n  }\n\n  /**\n   * Updates thumb and input attributes based on current value.\n   * @param thumb Thumb whose aria attributes to update.\n   */\n  private updateThumbAndInputAttributes(thumb?: Thumb) {\n    if (!thumb) return;\n\n    const value =\n        this.isRange && thumb === Thumb.START ? this.valueStart : this.value;\n    const valueStr = String(value);\n    this.adapter.setInputAttribute(attributes.INPUT_VALUE, valueStr, thumb);\n    if (this.isRange && thumb === Thumb.START) {\n      this.adapter.setInputAttribute(attributes.INPUT_MIN, valueStr, Thumb.END);\n    } else if (this.isRange && thumb === Thumb.END) {\n      this.adapter.setInputAttribute(\n          attributes.INPUT_MAX, valueStr, Thumb.START);\n    }\n\n    // Sync attribute with property.\n    if (this.adapter.getInputValue(thumb) !== valueStr) {\n      this.adapter.setInputValue(valueStr, thumb);\n    }\n\n    const valueToAriaValueTextFn = this.adapter.getValueToAriaValueTextFn();\n    if (valueToAriaValueTextFn) {\n      this.adapter.setInputAttribute(\n          attributes.ARIA_VALUETEXT, valueToAriaValueTextFn(value), thumb);\n    }\n  }\n\n  /**\n   * Updates value indicator UI based on current value.\n   * @param thumb Thumb whose value indicator to update. If undefined, all\n   *     thumbs' value indicators are updated.\n   */\n  private updateValueIndicatorUI(thumb?: Thumb) {\n    if (!this.isDiscrete) return;\n\n    const value =\n        this.isRange && thumb === Thumb.START ? this.valueStart : this.value;\n    this.adapter.setValueIndicatorText(\n        value, thumb === Thumb.START ? Thumb.START : Thumb.END);\n\n    if (!thumb && this.isRange) {\n      this.adapter.setValueIndicatorText(this.valueStart, Thumb.START);\n    }\n  }\n\n  /**\n   * Updates tick marks UI within slider, based on current min, max, and step.\n   */\n  private updateTickMarksUI() {\n    if (!this.isDiscrete || !this.hasTickMarks) return;\n\n    const numTickMarksInactiveStart = (this.valueStart - this.min) / this.step;\n    const numTickMarksActive = (this.value - this.valueStart) / this.step + 1;\n    const numTickMarksInactiveEnd = (this.max - this.value) / this.step;\n    const tickMarksInactiveStart =\n        Array.from<TickMark>({length: numTickMarksInactiveStart})\n            .fill(TickMark.INACTIVE);\n    const tickMarksActive = Array.from<TickMark>({length: numTickMarksActive})\n                                .fill(TickMark.ACTIVE);\n    const tickMarksInactiveEnd =\n        Array.from<TickMark>({length: numTickMarksInactiveEnd})\n            .fill(TickMark.INACTIVE);\n\n    this.adapter.updateTickMarks(tickMarksInactiveStart.concat(tickMarksActive)\n                                     .concat(tickMarksInactiveEnd));\n  }\n\n  /** Maps clientX to a value on the slider scale. */\n  private mapClientXOnSliderScale(clientX: number): number {\n    const xPos = clientX - this.rect.left;\n    let pctComplete = xPos / this.rect.width;\n    if (this.adapter.isRTL()) {\n      pctComplete = 1 - pctComplete;\n    }\n\n    // Fit the percentage complete between the range [min,max]\n    // by remapping from [0, 1] to [min, min+(max-min)].\n    const value = this.min + pctComplete * (this.max - this.min);\n    if (value === this.max || value === this.min) {\n      return value;\n    }\n    return Number(this.quantize(value).toFixed(this.numDecimalPlaces));\n  }\n\n  /** Calculates the quantized value based on step value. */\n  private quantize(value: number): number {\n    const numSteps = Math.round((value - this.min) / this.step);\n    return this.min + numSteps * this.step;\n  }\n\n  /**\n   * Updates slider value (internal state and UI) based on the given value.\n   */\n  private updateValue(value: number, thumb: Thumb, {\n    emitInputEvent,\n  }: {emitInputEvent?: boolean} = {}) {\n    value = this.clampValue(value, thumb);\n\n    if (this.isRange && thumb === Thumb.START) {\n      // Exit early if current value is the same as the new value.\n      if (this.valueStart === value) return;\n\n      this.valueStart = value;\n    } else {\n      // Exit early if current value is the same as the new value.\n      if (this.value === value) return;\n\n      this.value = value;\n    }\n\n    this.updateUI(thumb);\n\n    if (emitInputEvent) {\n      this.adapter.emitInputEvent(\n          thumb === Thumb.START ? this.valueStart : this.value, thumb);\n    }\n  }\n\n  /**\n   * Clamps the given value for the given thumb based on slider properties:\n   * - Restricts value within [min, max].\n   * - If range slider, clamp start value <= end value, and\n   *   end value >= start value.\n   */\n  private clampValue(value: number, thumb: Thumb): number {\n    // Clamp value to [min, max] range.\n    value = Math.min(Math.max(value, this.min), this.max);\n\n    const thumbStartMovedPastThumbEnd =\n        this.isRange && thumb === Thumb.START && value > this.value;\n    if (thumbStartMovedPastThumbEnd) {\n      return this.value;\n    }\n    const thumbEndMovedPastThumbStart =\n        this.isRange && thumb === Thumb.END && value < this.valueStart;\n    if (thumbEndMovedPastThumbStart) {\n      return this.valueStart;\n    }\n\n    return value;\n  }\n\n  /**\n   * Updates the active track and thumb style properties to reflect current\n   * value.\n   */\n  private updateThumbAndTrackUI(thumb?: Thumb) {\n    const {max, min} = this;\n    const pctComplete = (this.value - this.valueStart) / (max - min);\n    const rangePx = pctComplete * this.rect.width;\n    const isRtl = this.adapter.isRTL();\n\n    const transformProp =\n        HAS_WINDOW ? getCorrectPropertyName(window, 'transform') : 'transform';\n    if (this.isRange) {\n      const thumbLeftPos = this.adapter.isRTL() ?\n          (max - this.value) / (max - min) * this.rect.width :\n          (this.valueStart - min) / (max - min) * this.rect.width;\n      const thumbRightPos = thumbLeftPos + rangePx;\n\n      this.animFrame.request(AnimationKeys.SLIDER_UPDATE, () => {\n        // Set active track styles, accounting for animation direction by\n        // setting `transform-origin`.\n        const trackAnimatesFromRight = (!isRtl && thumb === Thumb.START) ||\n            (isRtl && thumb !== Thumb.START);\n        if (trackAnimatesFromRight) {\n          this.adapter.setTrackActiveStyleProperty('transform-origin', 'right');\n          this.adapter.setTrackActiveStyleProperty('left', 'unset');\n          this.adapter.setTrackActiveStyleProperty(\n              'right', `${this.rect.width - thumbRightPos}px`);\n        } else {\n          this.adapter.setTrackActiveStyleProperty('transform-origin', 'left');\n          this.adapter.setTrackActiveStyleProperty('right', 'unset');\n          this.adapter.setTrackActiveStyleProperty('left', `${thumbLeftPos}px`);\n        }\n        this.adapter.setTrackActiveStyleProperty(\n            transformProp, `scaleX(${pctComplete})`);\n\n        // Set thumb styles.\n        const thumbStartPos = isRtl ? thumbRightPos : thumbLeftPos;\n        const thumbEndPos = this.adapter.isRTL() ? thumbLeftPos : thumbRightPos;\n        if (thumb === Thumb.START || !thumb || !this.initialStylesRemoved) {\n          this.adapter.setThumbStyleProperty(\n              transformProp, `translateX(${thumbStartPos}px)`, Thumb.START);\n        }\n        if (thumb === Thumb.END || !thumb || !this.initialStylesRemoved) {\n          this.adapter.setThumbStyleProperty(\n              transformProp, `translateX(${thumbEndPos}px)`, Thumb.END);\n        }\n\n        this.removeInitialStyles(isRtl);\n        this.updateOverlappingThumbsUI(thumbStartPos, thumbEndPos, thumb);\n      });\n    } else {\n      this.animFrame.request(AnimationKeys.SLIDER_UPDATE, () => {\n        const thumbStartPos = isRtl ? this.rect.width - rangePx : rangePx;\n        this.adapter.setThumbStyleProperty(\n            transformProp, `translateX(${thumbStartPos}px)`, Thumb.END);\n        this.adapter.setTrackActiveStyleProperty(\n            transformProp, `scaleX(${pctComplete})`);\n\n        this.removeInitialStyles(isRtl);\n      });\n    }\n  }\n\n  /**\n   * Removes initial inline styles if not already removed. `left:<...>%`\n   * inline styles can be added to position the thumb correctly before JS\n   * initialization. However, they need to be removed before the JS starts\n   * positioning the thumb. This is because the JS uses\n   * `transform:translateX(<...>)px` (for performance reasons) to position\n   * the thumb (which is not possible for initial styles since we need the\n   * bounding rect measurements).\n   */\n  private removeInitialStyles(isRtl: boolean) {\n    if (this.initialStylesRemoved) return;\n\n    // Remove thumb position properties that were added for initial render.\n    const position = isRtl ? 'right' : 'left';\n    this.adapter.removeThumbStyleProperty(position, Thumb.END);\n    if (this.isRange) {\n      this.adapter.removeThumbStyleProperty(position, Thumb.START);\n    }\n\n    this.initialStylesRemoved = true;\n\n    this.resetTrackAndThumbAnimation();\n  }\n\n  /**\n   * Resets track/thumb animation to prevent animation when adding\n   * `transform` styles to thumb initially.\n   */\n  private resetTrackAndThumbAnimation() {\n    if (!this.isDiscrete) return;\n\n    // Set transition properties to default (no animation), so that the\n    // newly added `transform` styles do not animate thumb/track from\n    // their default positions.\n    const transitionProp = HAS_WINDOW ?\n        getCorrectPropertyName(window, 'transition') :\n        'transition';\n    const transitionDefault = 'all 0s ease 0s';\n    this.adapter.setThumbStyleProperty(\n        transitionProp, transitionDefault, Thumb.END);\n    if (this.isRange) {\n      this.adapter.setThumbStyleProperty(\n          transitionProp, transitionDefault, Thumb.START);\n    }\n    this.adapter.setTrackActiveStyleProperty(transitionProp, transitionDefault);\n\n    // In the next frame, remove the transition inline styles we just\n    // added, such that any animations added in the CSS can now take effect.\n    requestAnimationFrame(() => {\n      this.adapter.removeThumbStyleProperty(transitionProp, Thumb.END);\n      this.adapter.removeTrackActiveStyleProperty(transitionProp);\n      if (this.isRange) {\n        this.adapter.removeThumbStyleProperty(transitionProp, Thumb.START);\n      }\n    });\n  }\n\n  /**\n   * Adds THUMB_TOP class to active thumb if thumb knobs overlap; otherwise\n   * removes THUMB_TOP class from both thumbs.\n   * @param thumb Thumb that is active (being moved).\n   */\n  private updateOverlappingThumbsUI(\n      thumbStartPos: number, thumbEndPos: number, thumb?: Thumb) {\n    let thumbsOverlap = false;\n    if (this.adapter.isRTL()) {\n      const startThumbLeftEdge = thumbStartPos - this.startThumbKnobWidth / 2;\n      const endThumbRightEdge = thumbEndPos + this.endThumbKnobWidth / 2;\n      thumbsOverlap = endThumbRightEdge >= startThumbLeftEdge;\n    } else {\n      const startThumbRightEdge = thumbStartPos + this.startThumbKnobWidth / 2;\n      const endThumbLeftEdge = thumbEndPos - this.endThumbKnobWidth / 2;\n      thumbsOverlap = startThumbRightEdge >= endThumbLeftEdge;\n    }\n\n    if (thumbsOverlap) {\n      this.adapter.addThumbClass(\n          cssClasses.THUMB_TOP,\n          // If no thumb was dragged (in the case of initial layout), end\n          // thumb is on top by default.\n          thumb || Thumb.END);\n      this.adapter.removeThumbClass(\n          cssClasses.THUMB_TOP,\n          thumb === Thumb.START ? Thumb.END : Thumb.START);\n    } else {\n      this.adapter.removeThumbClass(cssClasses.THUMB_TOP, Thumb.START);\n      this.adapter.removeThumbClass(cssClasses.THUMB_TOP, Thumb.END);\n    }\n  }\n\n  /**\n   * Converts attribute value to a number, e.g. '100' => 100. Throws errors\n   * for invalid values.\n   * @param attributeValue Attribute value, e.g. 100.\n   * @param attributeName Attribute name, e.g. `aria-valuemax`.\n   */\n  private convertAttributeValueToNumber(\n      attributeValue: string|null, attributeName: string) {\n    if (attributeValue === null) {\n      throw new Error(\n          `MDCSliderFoundation: \\`${attributeName}\\` must be non-null.`);\n    }\n\n    const value = Number(attributeValue);\n    if (isNaN(value)) {\n      throw new Error(\n          `MDCSliderFoundation: \\`${attributeName}\\` value is ` +\n          `\\`${attributeValue}\\`, but must be a number.`);\n    }\n\n    return value;\n  }\n\n  /** Checks that the given properties are valid slider values. */\n  private validateProperties({min, max, value, valueStart, step}: {\n    min: number,\n    max: number,\n    value: number,\n    valueStart: number,\n    step: number\n  }) {\n    if (min >= max) {\n      throw new Error(\n          `MDCSliderFoundation: min must be strictly less than max. ` +\n          `Current: [min: ${min}, max: ${max}]`);\n    }\n\n    if (step <= 0) {\n      throw new Error(\n          `MDCSliderFoundation: step must be a positive number. ` +\n          `Current step: ${this.step}`);\n    }\n\n    if (this.isRange) {\n      if (value < min || value > max || valueStart < min || valueStart > max) {\n        throw new Error(\n            `MDCSliderFoundation: values must be in [min, max] range. ` +\n            `Current values: [start value: ${valueStart}, end value: ${\n                value}]`);\n      }\n\n      if (valueStart > value) {\n        throw new Error(\n            `MDCSliderFoundation: start value must be <= end value. ` +\n            `Current values: [start value: ${valueStart}, end value: ${\n                value}]`);\n      }\n\n      const numStepsValueStartFromMin = (valueStart - min) / step;\n      const numStepsValueFromMin = (value - min) / step;\n      if ((numStepsValueStartFromMin % 1) !== 0 ||\n          (numStepsValueFromMin % 1) !== 0) {\n        throw new Error(\n            `MDCSliderFoundation: Slider values must be valid based on the ` +\n            `step value. Current values: [start value: ${valueStart}, ` +\n            `end value: ${value}]`);\n      }\n    } else {  // Single point slider.\n      if (value < min || value > max) {\n        throw new Error(\n            `MDCSliderFoundation: value must be in [min, max] range. ` +\n            `Current value: ${value}`);\n      }\n\n      const numStepsValueFromMin = (value - min) / step;\n      if ((numStepsValueFromMin % 1) !== 0) {\n        throw new Error(\n            `MDCSliderFoundation: Slider value must be valid based on the ` +\n            `step value. Current value: ${value}`);\n      }\n    }\n  }\n\n  private registerEventHandlers() {\n    this.adapter.registerWindowEventHandler('resize', this.resizeListener);\n\n    if (MDCSliderFoundation.SUPPORTS_POINTER_EVENTS) {\n      // If supported, use pointer events API with #setPointerCapture.\n      this.adapter.registerEventHandler(\n          'pointerdown', this.pointerdownListener);\n      this.adapter.registerEventHandler('pointerup', this.pointerupListener);\n    } else {\n      // Otherwise, fall back to mousedown/touchstart events.\n      this.adapter.registerEventHandler(\n          'mousedown', this.mousedownOrTouchstartListener);\n      this.adapter.registerEventHandler(\n          'touchstart', this.mousedownOrTouchstartListener);\n    }\n\n    if (this.isRange) {\n      this.adapter.registerThumbEventHandler(\n          Thumb.START, 'mouseenter', this.thumbMouseenterListener);\n      this.adapter.registerThumbEventHandler(\n          Thumb.START, 'mouseleave', this.thumbMouseleaveListener);\n\n      this.adapter.registerInputEventHandler(\n          Thumb.START, 'change', this.inputStartChangeListener);\n      this.adapter.registerInputEventHandler(\n          Thumb.START, 'focus', this.inputStartFocusListener);\n      this.adapter.registerInputEventHandler(\n          Thumb.START, 'blur', this.inputStartBlurListener);\n    }\n\n    this.adapter.registerThumbEventHandler(\n        Thumb.END, 'mouseenter', this.thumbMouseenterListener);\n    this.adapter.registerThumbEventHandler(\n        Thumb.END, 'mouseleave', this.thumbMouseleaveListener);\n\n    this.adapter.registerInputEventHandler(\n        Thumb.END, 'change', this.inputEndChangeListener);\n    this.adapter.registerInputEventHandler(\n        Thumb.END, 'focus', this.inputEndFocusListener);\n    this.adapter.registerInputEventHandler(\n        Thumb.END, 'blur', this.inputEndBlurListener);\n  }\n\n  private deregisterEventHandlers() {\n    this.adapter.deregisterWindowEventHandler('resize', this.resizeListener);\n\n    if (MDCSliderFoundation.SUPPORTS_POINTER_EVENTS) {\n      this.adapter.deregisterEventHandler(\n          'pointerdown', this.pointerdownListener);\n      this.adapter.deregisterEventHandler('pointerup', this.pointerupListener);\n    } else {\n      this.adapter.deregisterEventHandler(\n          'mousedown', this.mousedownOrTouchstartListener);\n      this.adapter.deregisterEventHandler(\n          'touchstart', this.mousedownOrTouchstartListener);\n    }\n\n    if (this.isRange) {\n      this.adapter.deregisterThumbEventHandler(\n          Thumb.START, 'mouseenter', this.thumbMouseenterListener);\n      this.adapter.deregisterThumbEventHandler(\n          Thumb.START, 'mouseleave', this.thumbMouseleaveListener);\n\n      this.adapter.deregisterInputEventHandler(\n          Thumb.START, 'change', this.inputStartChangeListener);\n      this.adapter.deregisterInputEventHandler(\n          Thumb.START, 'focus', this.inputStartFocusListener);\n      this.adapter.deregisterInputEventHandler(\n          Thumb.START, 'blur', this.inputStartBlurListener);\n    }\n\n    this.adapter.deregisterThumbEventHandler(\n        Thumb.END, 'mouseenter', this.thumbMouseenterListener);\n    this.adapter.deregisterThumbEventHandler(\n        Thumb.END, 'mouseleave', this.thumbMouseleaveListener);\n\n    this.adapter.deregisterInputEventHandler(\n        Thumb.END, 'change', this.inputEndChangeListener);\n    this.adapter.deregisterInputEventHandler(\n        Thumb.END, 'focus', this.inputEndFocusListener);\n    this.adapter.deregisterInputEventHandler(\n        Thumb.END, 'blur', this.inputEndBlurListener);\n  }\n\n  private handlePointerup() {\n    this.handleUp();\n\n    this.adapter.deregisterEventHandler('pointermove', this.moveListener);\n  }\n}\n\nfunction isIOS() {\n  // Source:\n  // https://stackoverflow.com/questions/9038625/detect-if-device-is-ios\n  return [\n    'iPad Simulator', 'iPhone Simulator', 'iPod Simulator', 'iPad', 'iPhone',\n    'iPod'\n  ].includes(navigator.platform)\n      // iPad on iOS 13 detection\n      || (navigator.userAgent.includes('Mac') && 'ontouchend' in document);\n}\n\n/**\n * Given a number, returns the number of digits that appear after the\n * decimal point.\n * See\n * https://stackoverflow.com/questions/9539513/is-there-a-reliable-way-in-javascript-to-obtain-the-number-of-decimal-places-of\n */\nfunction getNumDecimalPlaces(n: number): number {\n  // Pull out the fraction and the exponent.\n  const match = /(?:\\.(\\d+))?(?:[eE]([+\\-]?\\d+))?$/.exec(String(n));\n  // NaN or Infinity or integer.\n  // We arbitrarily decide that Infinity is integral.\n  if (!match) return 0;\n\n  const fraction = match[1] || '';  // E.g. 1.234e-2 => 234\n  const exponent = match[2] || 0;   // E.g. 1.234e-2 => -2\n  // Count the number of digits in the fraction and subtract the\n  // exponent to simulate moving the decimal point left by exponent places.\n  // 1.234e+2 has 1 fraction digit and '234'.length -  2 == 1\n  // 1.234e-2 has 5 fraction digit and '234'.length - -2 == 5\n  return Math.max(\n      0,  // lower limit\n      (fraction === '0' ? 0 : fraction.length) - Number(exponent));\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** Tick mark enum, for discrete sliders. */\nexport enum TickMark {\n  ACTIVE,\n  INACTIVE,\n}\n\n/**\n * Thumb types: range slider has two thumbs (START, END) whereas single point\n * slider only has one thumb (END).\n */\nexport enum Thumb {\n  // Thumb at start of slider (e.g. in LTR mode, left thumb on range slider).\n  START = 1,\n  // Thumb at end of slider (e.g. in LTR mode, right thumb on range slider,\n  // or only thumb on single point slider).\n  END,\n}\n\n/** Interface for `detail` of slider custom change and input events. */\nexport interface MDCSliderChangeEventDetail {\n  // The new value after change.\n  value: number;\n\n  // The thumb for which the value has changed:\n  // - For single point slider, this will always be Thumb.END.\n  // - For range slider, either Thumb.START or Thumb.END.\n  thumb: Thumb;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCSnackbarAdapter {\n  addClass(className: string): void;\n  announce(): void;\n  notifyClosed(reason: string): void;\n  notifyClosing(reason: string): void;\n  notifyOpened(): void;\n  notifyOpening(): void;\n  removeClass(className: string): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {closest} from '@material/dom/ponyfill';\nimport {MDCSnackbarAdapter} from './adapter';\nimport {strings} from './constants';\nimport {MDCSnackbarFoundation} from './foundation';\nimport {MDCSnackbarAnnouncer, MDCSnackbarAnnouncerFactory, MDCSnackbarCloseEventDetail} from './types';\nimport * as util from './util';\n\nconst {\n  SURFACE_SELECTOR, LABEL_SELECTOR, ACTION_SELECTOR, DISMISS_SELECTOR,\n  OPENING_EVENT, OPENED_EVENT, CLOSING_EVENT, CLOSED_EVENT,\n} = strings;\n\nexport class MDCSnackbar extends MDCComponent<MDCSnackbarFoundation> {\n  static attachTo(root: Element) {\n    return new MDCSnackbar(root);\n  }\n\n  private announce!: MDCSnackbarAnnouncer;  // assigned in initialize()\n\n  private actionEl!: Element;   // assigned in initialSyncWithDOM()\n  private labelEl!: Element;    // assigned in initialSyncWithDOM()\n  private surfaceEl!: Element;  // assigned in initialSyncWithDOM()\n\n  private handleKeyDown!:\n      SpecificEventListener<'keydown'>;  // assigned in initialSyncWithDOM()\n  private handleSurfaceClick!:\n      SpecificEventListener<'click'>;  // assigned in initialSyncWithDOM()\n\n  initialize(announcerFactory: MDCSnackbarAnnouncerFactory = () => util.announce) {\n    this.announce = announcerFactory();\n  }\n\n  initialSyncWithDOM() {\n    this.surfaceEl = this.root.querySelector(SURFACE_SELECTOR)!;\n    this.labelEl = this.root.querySelector(LABEL_SELECTOR)!;\n    this.actionEl = this.root.querySelector(ACTION_SELECTOR)!;\n\n    this.handleKeyDown = (evt) => {\n      this.foundation.handleKeyDown(evt);\n    };\n    this.handleSurfaceClick = (evt) => {\n      const target = evt.target as Element;\n      if (this.isActionButton(target)) {\n        this.foundation.handleActionButtonClick(evt);\n      } else if (this.isActionIcon(target)) {\n        this.foundation.handleActionIconClick(evt);\n      }\n    };\n\n    this.registerKeyDownHandler(this.handleKeyDown);\n    this.registerSurfaceClickHandler(this.handleSurfaceClick);\n  }\n\n  destroy() {\n    super.destroy();\n    this.deregisterKeyDownHandler(this.handleKeyDown);\n    this.deregisterSurfaceClickHandler(this.handleSurfaceClick);\n  }\n\n  open() {\n    this.foundation.open();\n  }\n\n  /**\n   * @param reason Why the snackbar was closed. Value will be passed to CLOSING_EVENT and CLOSED_EVENT via the\n   *     `event.detail.reason` property. Standard values are REASON_ACTION and REASON_DISMISS, but custom\n   *     client-specific values may also be used if desired.\n   */\n  close(reason = '') {\n    this.foundation.close(reason);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCSnackbarAdapter = {\n      addClass: (className) => {\n        this.root.classList.add(className);\n      },\n      announce: () => {\n        this.announce(this.labelEl);\n      },\n      notifyClosed: (reason) => this.emit<MDCSnackbarCloseEventDetail>(\n          CLOSED_EVENT, reason ? {reason} : {}),\n      notifyClosing: (reason) => this.emit<MDCSnackbarCloseEventDetail>(\n          CLOSING_EVENT, reason ? {reason} : {}),\n      notifyOpened: () => this.emit(OPENED_EVENT, {}),\n      notifyOpening: () => this.emit(OPENING_EVENT, {}),\n      removeClass: (className) => this.root.classList.remove(className),\n    };\n    return new MDCSnackbarFoundation(adapter);\n  }\n\n  get timeoutMs(): number {\n    return this.foundation.getTimeoutMs();\n  }\n\n  set timeoutMs(timeoutMs: number) {\n    this.foundation.setTimeoutMs(timeoutMs);\n  }\n\n  get closeOnEscape(): boolean {\n    return this.foundation.getCloseOnEscape();\n  }\n\n  set closeOnEscape(closeOnEscape: boolean) {\n    this.foundation.setCloseOnEscape(closeOnEscape);\n  }\n\n  get isOpen(): boolean {\n    return this.foundation.isOpen();\n  }\n\n  get labelText(): string {\n    // This property only returns null if the node is a document, DOCTYPE,\n    // or notation. On Element nodes, it always returns a string.\n    return this.labelEl.textContent!;\n  }\n\n  set labelText(labelText: string) {\n    this.labelEl.textContent = labelText;\n  }\n\n  get actionButtonText(): string {\n    return this.actionEl.textContent!;\n  }\n\n  set actionButtonText(actionButtonText: string) {\n    this.actionEl.textContent = actionButtonText;\n  }\n\n  private registerKeyDownHandler(handler: SpecificEventListener<'keydown'>) {\n    this.listen('keydown', handler);\n  }\n\n  private deregisterKeyDownHandler(handler: SpecificEventListener<'keydown'>) {\n    this.unlisten('keydown', handler);\n  }\n\n  private registerSurfaceClickHandler(handler: SpecificEventListener<'click'>) {\n    this.surfaceEl.addEventListener('click', handler as EventListener);\n  }\n\n  private deregisterSurfaceClickHandler(handler:\n                                            SpecificEventListener<'click'>) {\n    this.surfaceEl.removeEventListener('click', handler as EventListener);\n  }\n\n  private isActionButton(target: Element): boolean {\n    return Boolean(closest(target, ACTION_SELECTOR));\n  }\n\n  private isActionIcon(target: Element): boolean {\n    return Boolean(closest(target, DISMISS_SELECTOR));\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  CLOSING: 'mdc-snackbar--closing',\n  OPEN: 'mdc-snackbar--open',\n  OPENING: 'mdc-snackbar--opening',\n};\n\nconst strings = {\n  ACTION_SELECTOR: '.mdc-snackbar__action',\n  ARIA_LIVE_LABEL_TEXT_ATTR: 'data-mdc-snackbar-label-text',\n  CLOSED_EVENT: 'MDCSnackbar:closed',\n  CLOSING_EVENT: 'MDCSnackbar:closing',\n  DISMISS_SELECTOR: '.mdc-snackbar__dismiss',\n  LABEL_SELECTOR: '.mdc-snackbar__label',\n  OPENED_EVENT: 'MDCSnackbar:opened',\n  OPENING_EVENT: 'MDCSnackbar:opening',\n  REASON_ACTION: 'action',\n  REASON_DISMISS: 'dismiss',\n  SURFACE_SELECTOR: '.mdc-snackbar__surface',\n};\n\nconst numbers = {\n  DEFAULT_AUTO_DISMISS_TIMEOUT_MS: 5000,\n  INDETERMINATE: -1,\n  MAX_AUTO_DISMISS_TIMEOUT_MS: 10000,\n  MIN_AUTO_DISMISS_TIMEOUT_MS: 4000,\n\n  // These variables need to be kept in sync with the values in _variables.scss.\n  SNACKBAR_ANIMATION_CLOSE_TIME_MS: 75,\n  SNACKBAR_ANIMATION_OPEN_TIME_MS: 150,\n\n  /**\n   * Number of milliseconds to wait between temporarily clearing the label text\n   * in the DOM and subsequently restoring it. This is necessary to force IE 11\n   * to pick up the `aria-live` content change and announce it to the user.\n   */\n  ARIA_LIVE_DELAY_MS: 1000,\n};\n\nexport {cssClasses, strings, numbers};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCSnackbarAdapter} from './adapter';\nimport {cssClasses, numbers, strings} from './constants';\n\nconst {OPENING, OPEN, CLOSING} = cssClasses;\nconst {REASON_ACTION, REASON_DISMISS} = strings;\n\nexport class MDCSnackbarFoundation extends MDCFoundation<MDCSnackbarAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get defaultAdapter(): MDCSnackbarAdapter {\n    return {\n      addClass: () => undefined,\n      announce: () => undefined,\n      notifyClosed: () => undefined,\n      notifyClosing: () => undefined,\n      notifyOpened: () => undefined,\n      notifyOpening: () => undefined,\n      removeClass: () => undefined,\n    };\n  }\n\n  private opened = false;\n  private animationFrame = 0;\n  private animationTimer = 0;\n  private autoDismissTimer = 0;\n  private autoDismissTimeoutMs = numbers.DEFAULT_AUTO_DISMISS_TIMEOUT_MS;\n  private closeOnEscape = true;\n\n  constructor(adapter?: Partial<MDCSnackbarAdapter>) {\n    super({...MDCSnackbarFoundation.defaultAdapter, ...adapter});\n  }\n\n  destroy() {\n    this.clearAutoDismissTimer();\n    cancelAnimationFrame(this.animationFrame);\n    this.animationFrame = 0;\n    clearTimeout(this.animationTimer);\n    this.animationTimer = 0;\n    this.adapter.removeClass(OPENING);\n    this.adapter.removeClass(OPEN);\n    this.adapter.removeClass(CLOSING);\n  }\n\n  open() {\n    this.clearAutoDismissTimer();\n    this.opened = true;\n    this.adapter.notifyOpening();\n    this.adapter.removeClass(CLOSING);\n    this.adapter.addClass(OPENING);\n    this.adapter.announce();\n\n    // Wait a frame once display is no longer \"none\", to establish basis for animation\n    this.runNextAnimationFrame(() => {\n      this.adapter.addClass(OPEN);\n\n      this.animationTimer = setTimeout(() => {\n        const timeoutMs = this.getTimeoutMs();\n        this.handleAnimationTimerEnd();\n        this.adapter.notifyOpened();\n        if (timeoutMs !== numbers.INDETERMINATE) {\n          this.autoDismissTimer = setTimeout(() => {\n            this.close(REASON_DISMISS);\n          }, timeoutMs);\n        }\n      }, numbers.SNACKBAR_ANIMATION_OPEN_TIME_MS);\n    });\n  }\n\n  /**\n   * @param reason Why the snackbar was closed. Value will be passed to CLOSING_EVENT and CLOSED_EVENT via the\n   *     `event.detail.reason` property. Standard values are REASON_ACTION and REASON_DISMISS, but custom\n   *     client-specific values may also be used if desired.\n   */\n  close(reason = '') {\n    if (!this.opened) {\n      // Avoid redundant close calls (and events), e.g. repeated interactions as the snackbar is animating closed\n      return;\n    }\n\n    cancelAnimationFrame(this.animationFrame);\n    this.animationFrame = 0;\n    this.clearAutoDismissTimer();\n\n    this.opened = false;\n    this.adapter.notifyClosing(reason);\n    this.adapter.addClass(cssClasses.CLOSING);\n    this.adapter.removeClass(cssClasses.OPEN);\n    this.adapter.removeClass(cssClasses.OPENING);\n\n    clearTimeout(this.animationTimer);\n    this.animationTimer = setTimeout(() => {\n      this.handleAnimationTimerEnd();\n      this.adapter.notifyClosed(reason);\n    }, numbers.SNACKBAR_ANIMATION_CLOSE_TIME_MS);\n  }\n\n  isOpen(): boolean {\n    return this.opened;\n  }\n\n  getTimeoutMs(): number {\n    return this.autoDismissTimeoutMs;\n  }\n\n  setTimeoutMs(timeoutMs: number) {\n    // Use shorter variable names to make the code more readable\n    const minValue = numbers.MIN_AUTO_DISMISS_TIMEOUT_MS;\n    const maxValue = numbers.MAX_AUTO_DISMISS_TIMEOUT_MS;\n    const indeterminateValue = numbers.INDETERMINATE;\n\n    if (timeoutMs === numbers.INDETERMINATE || (timeoutMs <= maxValue && timeoutMs >= minValue)) {\n      this.autoDismissTimeoutMs = timeoutMs;\n    } else {\n      throw new Error(`\n        timeoutMs must be an integer in the range ${minValue}–${maxValue}\n        (or ${indeterminateValue} to disable), but got '${timeoutMs}'`);\n    }\n  }\n\n  getCloseOnEscape(): boolean {\n    return this.closeOnEscape;\n  }\n\n  setCloseOnEscape(closeOnEscape: boolean) {\n    this.closeOnEscape = closeOnEscape;\n  }\n\n  handleKeyDown(evt: KeyboardEvent) {\n    const isEscapeKey = evt.key === 'Escape' || evt.keyCode === 27;\n    if (isEscapeKey && this.getCloseOnEscape()) {\n      this.close(REASON_DISMISS);\n    }\n  }\n\n  handleActionButtonClick(_evt: MouseEvent) {\n    this.close(REASON_ACTION);\n  }\n\n  handleActionIconClick(_evt: MouseEvent) {\n    this.close(REASON_DISMISS);\n  }\n\n  private clearAutoDismissTimer() {\n    clearTimeout(this.autoDismissTimer);\n    this.autoDismissTimer = 0;\n  }\n\n  private handleAnimationTimerEnd() {\n    this.animationTimer = 0;\n    this.adapter.removeClass(cssClasses.OPENING);\n    this.adapter.removeClass(cssClasses.CLOSING);\n  }\n\n  /**\n   * Runs the given logic on the next animation frame, using setTimeout to factor in Firefox reflow behavior.\n   */\n  private runNextAnimationFrame(callback: () => void) {\n    cancelAnimationFrame(this.animationFrame);\n    this.animationFrame = requestAnimationFrame(() => {\n      this.animationFrame = 0;\n      clearTimeout(this.animationTimer);\n      this.animationTimer = setTimeout(callback, 0);\n    });\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCSnackbarFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport * as util from './util';\n\nexport {util};\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport type MDCSnackbarAnnouncer = (ariaEl: Element, labelEl?: Element) => void;\nexport type MDCSnackbarAnnouncerFactory = () => MDCSnackbarAnnouncer;\n\nexport interface MDCSnackbarCloseEventDetail {\n  reason?: string;\n}\n\n// Note: CustomEvent<T> is not supported by Closure Compiler.\n\nexport interface MDCSnackbarCloseEvent extends Event {\n  readonly detail: MDCSnackbarCloseEventDetail;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {numbers, strings} from './constants';\n\nconst {ARIA_LIVE_DELAY_MS} = numbers;\nconst {ARIA_LIVE_LABEL_TEXT_ATTR} = strings;\n\nfunction announce(ariaEl: Element, labelEl: Element = ariaEl) {\n  const priority = ariaEl.getAttribute('aria-live');\n\n  // Trim text to ignore `&nbsp;` (see below).\n  // textContent is only null if the node is a document, DOCTYPE, or notation.\n  const labelText = labelEl.textContent!.trim();\n  if (!labelText || !priority) {\n    return;\n  }\n\n  // Temporarily disable `aria-live` to prevent JAWS+Firefox from announcing the message twice.\n  ariaEl.setAttribute('aria-live', 'off');\n\n  // Temporarily clear `textContent` to force a DOM mutation event that will be detected by screen readers.\n  // `aria-live` elements are only announced when the element's `textContent` *changes*, so snackbars\n  // sent to the browser in the initial HTML response won't be read unless we clear the element's `textContent` first.\n  // Similarly, displaying the same snackbar message twice in a row doesn't trigger a DOM mutation event,\n  // so screen readers won't announce the second message unless we first clear `textContent`.\n  //\n  // We have to clear the label text two different ways to make it work in all browsers and screen readers:\n  //\n  //   1. `textContent = ''` is required for IE11 + JAWS\n  //   2. `innerHTML = '&nbsp;'` is required for Chrome + JAWS and NVDA\n  //\n  // All other browser/screen reader combinations support both methods.\n  //\n  // The wrapper `<span>` visually hides the space character so that it doesn't cause jank when added/removed.\n  // N.B.: Setting `position: absolute`, `opacity: 0`, or `height: 0` prevents Chrome from detecting the DOM change.\n  //\n  // This technique has been tested in:\n  //\n  //   * JAWS 2019:\n  //       - Chrome 70\n  //       - Firefox 60 (ESR)\n  //       - IE 11\n  //   * NVDA 2018:\n  //       - Chrome 70\n  //       - Firefox 60 (ESR)\n  //       - IE 11\n  //   * ChromeVox 53\n  labelEl.textContent = '';\n  labelEl.innerHTML = '<span style=\"display: inline-block; width: 0; height: 1px;\">&nbsp;</span>';\n\n  // Prevent visual jank by temporarily displaying the label text in the ::before pseudo-element.\n  // CSS generated content is normally announced by screen readers\n  // (except in IE 11; see https://tink.uk/accessibility-support-for-css-generated-content/);\n  // however, `aria-live` is turned off, so this DOM update will be ignored by screen readers.\n  labelEl.setAttribute(ARIA_LIVE_LABEL_TEXT_ATTR, labelText);\n\n  setTimeout(() => {\n    // Allow screen readers to announce changes to the DOM again.\n    ariaEl.setAttribute('aria-live', priority);\n\n    // Remove the message from the ::before pseudo-element.\n    labelEl.removeAttribute(ARIA_LIVE_LABEL_TEXT_ATTR);\n\n    // Restore the original label text, which will be announced by screen readers.\n    labelEl.textContent = labelText;\n  }, ARIA_LIVE_DELAY_MS);\n}\n\nexport {announce};\n","/**\n * @license\n * Copyright 2021 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {CssClasses} from './constants';\n\n/**\n * The state of the switch.\n */\nexport interface MDCSwitchState {\n  /**\n   * Indicates whether or not the switch is disabled.\n   */\n  disabled: boolean;\n  /**\n   * Indicates whether or not the switch is processing and showing a loading\n   * indicator. A disabled switch cannot be processing.\n   */\n  processing: boolean;\n  /**\n   * If true, the switch is on. If false, the switch is off.\n   */\n  selected: boolean;\n}\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n *\n * This adapter is used to delegate state-only updates from the foundation\n * to the component. It does not delegate DOM or rendering logic, such as adding\n * or removing classes.\n */\nexport interface MDCSwitchAdapter {\n  /**\n   * The state of the component.\n   */\n  state: MDCSwitchState;\n}\n\n/**\n * Defines the shape of the adapter expected by the rendering foundation.\n *\n * This adapter is used to delegate state and rendering logic updates from the\n * rendering foundation to the component.\n */\nexport interface MDCSwitchRenderAdapter extends MDCSwitchAdapter {\n  /**\n   * Adds a class to the root element.\n   * @param className The class to add.\n   */\n  addClass(className: CssClasses): void;\n  /**\n   * Returns whether or not the root element has a class.\n   * @param className The class to check.\n   * @return true if the root element has the class, or false if not.\n   */\n  hasClass(className: CssClasses): boolean;\n  /**\n   * Checks if the root element is disabled.\n   * @return true if the root element is disabled, or false if not.\n   */\n  isDisabled(): boolean;\n  /**\n   * Removes a class from the root element.\n   * @param className The class to remove.\n   */\n  removeClass(className: CssClasses): void;\n  /**\n   * Sets the `aria-checked` attribute of the root element.\n   * @param ariaChecked The value of the attribute to set.\n   */\n  setAriaChecked(ariaChecked: string): void;\n  /**\n   * Disables or enables the root element.\n   * @param disabled True to disable the root element, or false to enable.\n   */\n  setDisabled(disabled: boolean): void;\n}\n","/**\n * @license\n * Copyright 2021 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\n\nimport {MDCSwitchRenderAdapter, MDCSwitchState} from './adapter';\nimport {Selectors} from './constants';\nimport {MDCSwitchRenderFoundation} from './foundation';\n\n/**\n * `MDCSwitch` provides a component implementation of a Material Design switch.\n */\nexport class MDCSwitch extends\n    MDCComponent<MDCSwitchRenderFoundation> implements MDCSwitchState,\n                                                       MDCRippleCapableSurface {\n  /**\n   * Creates a new `MDCSwitch` and attaches it to the given root element.\n   * @param root The root to attach to.\n   * @return the new component instance.\n   */\n  static attachTo(root: HTMLButtonElement) {\n    return new MDCSwitch(root);\n  }\n\n  disabled!: boolean;\n  processing!: boolean;\n  selected!: boolean;\n\n  ripple!: MDCRipple;\n\n  private rippleElement!: Element;\n\n  constructor(\n      public root: HTMLButtonElement, foundation?: MDCSwitchRenderFoundation) {\n    super(root, foundation);\n  }\n\n  initialize() {\n    this.ripple = new MDCRipple(this.root, this.createRippleFoundation());\n  }\n\n  initialSyncWithDOM() {\n    const rippleElement = this.root.querySelector(Selectors.RIPPLE);\n    if (!rippleElement) {\n      throw new Error(`Switch ${Selectors.RIPPLE} element is required.`);\n    }\n\n    this.rippleElement = rippleElement;\n    this.root.addEventListener('click', this.foundation.handleClick);\n    this.foundation.initFromDOM();\n  }\n\n  destroy() {\n    super.destroy();\n    this.ripple.destroy();\n    this.root.removeEventListener('click', this.foundation.handleClick);\n  }\n\n  getDefaultFoundation() {\n    return new MDCSwitchRenderFoundation(this.createAdapter());\n  }\n\n  protected createAdapter(): MDCSwitchRenderAdapter {\n    return {\n      addClass: className => {\n        this.root.classList.add(className)\n      },\n      hasClass: className => this.root.classList.contains(className),\n      isDisabled: () => this.root.disabled,\n      removeClass: className => {\n        this.root.classList.remove(className);\n      },\n      setAriaChecked: ariaChecked =>\n          this.root.setAttribute('aria-checked', ariaChecked),\n      setDisabled: disabled => {\n        this.root.disabled = disabled;\n      },\n      state: this,\n    };\n  }\n\n  protected createRippleFoundation() {\n    return new MDCRippleFoundation(this.createRippleAdapter());\n  }\n\n  protected createRippleAdapter(): MDCRippleAdapter {\n    return {\n      ...MDCRipple.createAdapter(this),\n      computeBoundingRect: () => this.rippleElement.getBoundingClientRect(),\n      isUnbounded: () => true,\n    };\n  }\n}\n","/**\n * @license\n * Copyright 2021 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * CSS classes used for switch.\n */\nexport enum CssClasses {\n  PROCESSING = 'mdc-switch--processing',\n  SELECTED = 'mdc-switch--selected',\n  UNSELECTED = 'mdc-switch--unselected',\n}\n\n/**\n * Query selectors used for switch.\n */\nexport enum Selectors {\n  RIPPLE = '.mdc-switch__ripple',\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCSwitchAdapter {\n  /**\n   * Adds a CSS class to the root element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a CSS class from the root element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Sets checked state of the native HTML control underlying the switch.\n   */\n  setNativeControlChecked(checked: boolean): void;\n\n  /**\n   * Sets the disabled state of the native HTML control underlying the switch.\n   */\n  setNativeControlDisabled(disabled: boolean): void;\n\n  /**\n   * Sets an attribute value of the native HTML control underlying the switch.\n   */\n  setNativeControlAttr(attr: string, value: string): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {EventType, SpecificEventListener} from '@material/base/types';\nimport {applyPassive} from '@material/dom/events';\nimport {matches} from '@material/dom/ponyfill';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\nimport {MDCSwitchAdapter} from './adapter';\nimport {MDCSwitchFoundation} from './foundation';\n\nexport class MDCSwitch extends MDCComponent<MDCSwitchFoundation> implements MDCRippleCapableSurface {\n  static attachTo(root: HTMLElement) {\n    return new MDCSwitch(root);\n  }\n\n  private readonly rippleSurface = this.createRipple();\n\n  // Initialized in `initialSyncWithDOM`.\n  private changeHandler!: EventListener;\n\n  destroy() {\n    super.destroy();\n    this.rippleSurface.destroy();\n    this.nativeControl.removeEventListener('change', this.changeHandler);\n  }\n\n  initialSyncWithDOM() {\n    this.changeHandler = (...args) => {\n      this.foundation.handleChange(...args);\n    };\n    this.nativeControl.addEventListener('change', this.changeHandler);\n\n    // Sometimes the checked state of the input element is saved in the history.\n    // The switch styling should match the checked state of the input element.\n    // Do an initial sync between the native control and the foundation.\n    this.checked = this.checked;\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCSwitchAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      setNativeControlChecked: (checked) => this.nativeControl.checked =\n          checked,\n      setNativeControlDisabled: (disabled) => this.nativeControl.disabled =\n          disabled,\n      setNativeControlAttr: (attr, value) => {\n        this.nativeControl.setAttribute(attr, value);\n      },\n    };\n    return new MDCSwitchFoundation(adapter);\n  }\n\n  get ripple() {\n    return this.rippleSurface;\n  }\n\n  get checked() {\n    return this.nativeControl.checked;\n  }\n\n  set checked(checked) {\n    this.foundation.setChecked(checked);\n  }\n\n  get disabled() {\n    return this.nativeControl.disabled;\n  }\n\n  set disabled(disabled) {\n    this.foundation.setDisabled(disabled);\n  }\n\n  private createRipple(): MDCRipple {\n    const {RIPPLE_SURFACE_SELECTOR} = MDCSwitchFoundation.strings;\n    const rippleSurface =\n        this.root.querySelector(RIPPLE_SURFACE_SELECTOR) as HTMLElement;\n\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCRippleAdapter = {\n      ...MDCRipple.createAdapter(this),\n      addClass: (className: string) => rippleSurface.classList.add(className),\n      computeBoundingRect: () => rippleSurface.getBoundingClientRect(),\n      deregisterInteractionHandler: <K extends EventType>(\n          evtType: K, handler: SpecificEventListener<K>) => {\n        this.nativeControl.removeEventListener(\n            evtType, handler, applyPassive());\n      },\n      isSurfaceActive: () => matches(this.nativeControl, ':active'),\n      isUnbounded: () => true,\n      registerInteractionHandler: <K extends EventType>(\n          evtType: K, handler: SpecificEventListener<K>) => {\n        this.nativeControl.addEventListener(evtType, handler, applyPassive());\n      },\n      removeClass: (className: string) => {\n        rippleSurface.classList.remove(className);\n      },\n      updateCssVariable: (varName: string, value: string) => {\n        rippleSurface.style.setProperty(varName, value);\n      },\n    };\n    return new MDCRipple(this.root, new MDCRippleFoundation(adapter));\n  }\n\n  private get nativeControl() {\n    const {NATIVE_CONTROL_SELECTOR} = MDCSwitchFoundation.strings;\n    return this.root.querySelector(NATIVE_CONTROL_SELECTOR) as HTMLInputElement;\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** CSS classes used by the switch. */\nconst cssClasses = {\n  /** Class used for a switch that is in the \"checked\" (on) position. */\n  CHECKED: 'mdc-switch--checked',\n  /** Class used for a switch that is disabled. */\n  DISABLED: 'mdc-switch--disabled',\n};\n\n/** String constants used by the switch. */\nconst strings = {\n  /** Aria attribute for checked or unchecked state of switch */\n  ARIA_CHECKED_ATTR: 'aria-checked',\n  /** A CSS selector used to locate the native HTML control for the switch.  */\n  NATIVE_CONTROL_SELECTOR: '.mdc-switch__native-control',\n  /** A CSS selector used to locate the ripple surface element for the switch. */\n  RIPPLE_SURFACE_SELECTOR: '.mdc-switch__thumb-underlay',\n};\n\nexport {cssClasses, strings};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCSwitchAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCSwitchFoundation extends MDCFoundation<MDCSwitchAdapter> {\n  /** The string constants used by the switch. */\n  static get strings() {\n    return strings;\n  }\n\n  /** The CSS classes used by the switch. */\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  /** The default Adapter for the switch. */\n  static get defaultAdapter(): MDCSwitchAdapter {\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      setNativeControlChecked: () => undefined,\n      setNativeControlDisabled: () => undefined,\n      setNativeControlAttr: () => undefined,\n    };\n  }\n\n  constructor(adapter?: Partial<MDCSwitchAdapter>) {\n    super({...MDCSwitchFoundation.defaultAdapter, ...adapter});\n  }\n\n  /** Sets the checked state of the switch. */\n  setChecked(checked: boolean) {\n    this.adapter.setNativeControlChecked(checked);\n    this.updateAriaChecked(checked);\n    this.updateCheckedStyling(checked);\n  }\n\n  /** Sets the disabled state of the switch. */\n  setDisabled(disabled: boolean) {\n    this.adapter.setNativeControlDisabled(disabled);\n    if (disabled) {\n      this.adapter.addClass(cssClasses.DISABLED);\n    } else {\n      this.adapter.removeClass(cssClasses.DISABLED);\n    }\n  }\n\n  /** Handles the change event for the switch native control. */\n  handleChange(evt: Event) {\n    const nativeControl = evt.target as HTMLInputElement;\n    this.updateAriaChecked(nativeControl.checked);\n    this.updateCheckedStyling(nativeControl.checked);\n  }\n\n  /** Updates the styling of the switch based on its checked state. */\n  private updateCheckedStyling(checked: boolean) {\n    if (checked) {\n      this.adapter.addClass(cssClasses.CHECKED);\n    } else {\n      this.adapter.removeClass(cssClasses.CHECKED);\n    }\n  }\n\n  private updateAriaChecked(checked: boolean) {\n    this.adapter.setNativeControlAttr(\n        strings.ARIA_CHECKED_ATTR, `${!!checked}`);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCSwitchFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2021 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCObserverFoundation} from '@material/base/observer-foundation';\n\nimport {MDCSwitchAdapter, MDCSwitchRenderAdapter} from './adapter';\nimport {CssClasses} from './constants';\n\n/**\n * `MDCSwitchFoundation` provides a state-only foundation for a switch\n * component.\n *\n * State observers and event handler entrypoints update a component's adapter's\n * state with the logic needed for switch to function.\n */\nexport class MDCSwitchFoundation extends\n    MDCObserverFoundation<MDCSwitchAdapter> {\n  constructor(adapter: MDCSwitchAdapter) {\n    super(adapter);\n    this.handleClick = this.handleClick.bind(this);\n  }\n\n  /**\n   * Initializes the foundation and starts observing state changes.\n   */\n  init() {\n    this.observe(this.adapter.state, {\n      disabled: this.stopProcessingIfDisabled,\n      processing: this.stopProcessingIfDisabled,\n    });\n  }\n\n  /**\n   * Event handler for switch click events. Clicking on a switch will toggle its\n   * selected state.\n   */\n  handleClick() {\n    if (this.adapter.state.disabled) {\n      return;\n    }\n\n    this.adapter.state.selected = !this.adapter.state.selected;\n  }\n\n  protected stopProcessingIfDisabled() {\n    if (this.adapter.state.disabled) {\n      this.adapter.state.processing = false;\n    }\n  }\n}\n/**\n * `MDCSwitchRenderFoundation` provides a state and rendering foundation for a\n * switch component.\n *\n * State observers and event handler entrypoints update a component's\n * adapter's state with the logic needed for switch to function.\n *\n * In response to state changes, the rendering foundation uses the component's\n * render adapter to keep the component's DOM updated with the state.\n */\nexport class MDCSwitchRenderFoundation extends MDCSwitchFoundation {\n  protected adapter!: MDCSwitchRenderAdapter;\n\n  /**\n   * Initializes the foundation and starts observing state changes.\n   */\n  init() {\n    super.init();\n    this.observe(this.adapter.state, {\n      disabled: this.onDisabledChange,\n      processing: this.onProcessingChange,\n      selected: this.onSelectedChange,\n    })\n  }\n\n  /**\n   * Initializes the foundation from a server side rendered (SSR) component.\n   * This will sync the adapter's state with the current state of the DOM.\n   *\n   * This method should be called after `init()`.\n   */\n  initFromDOM() {\n    // Turn off observers while setting state\n    this.setObserversEnabled(this.adapter.state, false);\n\n    this.adapter.state.selected = this.adapter.hasClass(CssClasses.SELECTED);\n    // Ensure aria-checked is set if attribute is not present\n    this.onSelectedChange();\n    this.adapter.state.disabled = this.adapter.isDisabled();\n    this.adapter.state.processing =\n        this.adapter.hasClass(CssClasses.PROCESSING);\n\n    // Re-observe state\n    this.setObserversEnabled(this.adapter.state, true);\n    this.stopProcessingIfDisabled();\n  }\n\n  protected onDisabledChange() {\n    this.adapter.setDisabled(this.adapter.state.disabled);\n  }\n\n  protected onProcessingChange() {\n    this.toggleClass(this.adapter.state.processing, CssClasses.PROCESSING);\n  }\n\n  protected onSelectedChange() {\n    this.adapter.setAriaChecked(String(this.adapter.state.selected));\n    this.toggleClass(this.adapter.state.selected, CssClasses.SELECTED);\n    this.toggleClass(!this.adapter.state.selected, CssClasses.UNSELECTED);\n  }\n\n  private toggleClass(addClass: boolean, className: CssClasses) {\n    if (addClass) {\n      this.adapter.addClass(className);\n    } else {\n      this.adapter.removeClass(className);\n    }\n  }\n}\n","/**\n * @license\n * Copyright 2021 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// TODO(b/185410690): remove deprecated export\nimport * as deprecated from './deprecated';\nexport {deprecated};\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTabDimensions} from '@material/tab/types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTabBarAdapter {\n  /**\n   * Scrolls to the given position\n   * @param scrollX The position to scroll to\n   */\n  scrollTo(scrollX: number): void;\n\n  /**\n   * Increments the current scroll position by the given amount\n   * @param scrollXIncrement The amount to increment scroll\n   */\n  incrementScroll(scrollXIncrement: number): void;\n\n  /**\n   * Returns the current scroll position\n   */\n  getScrollPosition(): number;\n\n  /**\n   * Returns the width of the scroll content\n   */\n  getScrollContentWidth(): number;\n\n  /**\n   * Returns the root element's offsetWidth\n   */\n  getOffsetWidth(): number;\n\n  /**\n   * Returns if the Tab Bar language direction is RTL\n   */\n  isRTL(): boolean;\n\n  /**\n   * Sets the tab at the given index to be activated\n   * @param index The index of the tab to activate\n   */\n  setActiveTab(index: number): void;\n\n  /**\n   * Activates the tab at the given index with the given client rect\n   * @param index The index of the tab to activate\n   * @param clientRect The client rect of the previously active Tab Indicator\n   */\n  activateTabAtIndex(index: number, clientRect?: ClientRect): void;\n\n  /**\n   * Deactivates the tab at the given index\n   * @param index The index of the tab to deactivate\n   */\n  deactivateTabAtIndex(index: number): void;\n\n  /**\n   * Focuses the tab at the given index\n   * @param index The index of the tab to focus\n   */\n  focusTabAtIndex(index: number): void;\n\n  /**\n   * Returns the client rect of the tab's indicator\n   * @param index The index of the tab\n   */\n  getTabIndicatorClientRectAtIndex(index: number): ClientRect;\n\n  /**\n   * Returns the tab dimensions of the tab at the given index\n   * @param index The index of the tab\n   */\n  getTabDimensionsAtIndex(index: number): MDCTabDimensions;\n\n  /**\n   * Returns the length of the tab list\n   */\n  getTabListLength(): number;\n\n  /**\n   * Returns the index of the previously active tab\n   */\n  getPreviousActiveTabIndex(): number;\n\n  /**\n   * Returns the index of the focused tab\n   */\n  getFocusedTabIndex(): number;\n\n  /**\n   * Returns the index of the given tab\n   * @param id The ID of the tab whose index to determine\n   */\n  getIndexOfTabById(id: string): number;\n\n  /**\n   * Emits the MDCTabBar:activated event\n   * @param index The index of the activated tab\n   */\n  notifyTabActivated(index: number): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {CustomEventListener, SpecificEventListener} from '@material/base/types';\nimport {MDCTabScroller, MDCTabScrollerFactory} from '@material/tab-scroller/component';\nimport {MDCTab, MDCTabFactory} from '@material/tab/component';\nimport {MDCTabFoundation} from '@material/tab/foundation';\nimport {MDCTabInteractionEvent} from '@material/tab/types';\nimport {MDCTabBarAdapter} from './adapter';\nimport {MDCTabBarFoundation} from './foundation';\nimport {MDCTabBarActivatedEventDetail} from './types';\n\nconst {strings} = MDCTabBarFoundation;\n\nlet tabIdCounter = 0;\n\nexport class MDCTabBar extends MDCComponent<MDCTabBarFoundation> {\n  static attachTo(root: Element): MDCTabBar {\n    return new MDCTabBar(root);\n  }\n\n  private tabList!: MDCTab[];                 // assigned in initialize()\n  private tabScroller!: MDCTabScroller|null;  // assigned in initialize()\n  private handleTabInteraction!:\n      CustomEventListener<MDCTabInteractionEvent>;  // assigned in\n                                                    // initialSyncWithDOM()\n  private handleKeyDown!:\n      SpecificEventListener<'keydown'>;  // assigned in initialSyncWithDOM()\n\n  set focusOnActivate(focusOnActivate: boolean) {\n    for (const tab of this.tabList) {\n      tab.focusOnActivate = focusOnActivate;\n    }\n  }\n\n  set useAutomaticActivation(useAutomaticActivation: boolean) {\n    this.foundation.setUseAutomaticActivation(useAutomaticActivation);\n  }\n\n  initialize(\n      tabFactory: MDCTabFactory = (el) => new MDCTab(el),\n      tabScrollerFactory: MDCTabScrollerFactory = (el) => new MDCTabScroller(el),\n  ) {\n    this.tabList = this.instantiateTabs(tabFactory);\n    this.tabScroller = this.instantiatetabScroller(tabScrollerFactory);\n  }\n\n  initialSyncWithDOM() {\n    this.handleTabInteraction = (evt) => {\n      this.foundation.handleTabInteraction(evt);\n    };\n    this.handleKeyDown = (evt) => {\n      this.foundation.handleKeyDown(evt);\n    };\n\n    this.listen(\n        MDCTabFoundation.strings.INTERACTED_EVENT, this.handleTabInteraction);\n    this.listen('keydown', this.handleKeyDown);\n\n    for (let i = 0; i < this.tabList.length; i++) {\n      if (this.tabList[i].active) {\n        this.scrollIntoView(i);\n        break;\n      }\n    }\n  }\n\n  destroy() {\n    super.destroy();\n    this.unlisten(\n        MDCTabFoundation.strings.INTERACTED_EVENT, this.handleTabInteraction);\n    this.unlisten('keydown', this.handleKeyDown);\n    for (const tab of this.tabList) {\n      tab.destroy();\n    }\n\n    if (this.tabScroller) {\n      this.tabScroller.destroy();\n    }\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCTabBarAdapter = {\n      scrollTo: (scrollX) => {\n        this.tabScroller!.scrollTo(scrollX);\n      },\n      incrementScroll: (scrollXIncrement) => {\n        this.tabScroller!.incrementScroll(scrollXIncrement);\n      },\n      getScrollPosition: () => this.tabScroller!.getScrollPosition(),\n      getScrollContentWidth: () => this.tabScroller!.getScrollContentWidth(),\n      getOffsetWidth: () => (this.root as HTMLElement).offsetWidth,\n      isRTL: () => window.getComputedStyle(this.root).getPropertyValue(\n                       'direction') === 'rtl',\n      setActiveTab: (index) => {\n        this.foundation.activateTab(index);\n      },\n      activateTabAtIndex: (index, clientRect) => {\n        this.tabList[index].activate(clientRect);\n      },\n      deactivateTabAtIndex: (index) => {\n        this.tabList[index].deactivate();\n      },\n      focusTabAtIndex: (index) => {\n        this.tabList[index].focus();\n      },\n      getTabIndicatorClientRectAtIndex: (index) =>\n          this.tabList[index].computeIndicatorClientRect(),\n      getTabDimensionsAtIndex: (index) =>\n          this.tabList[index].computeDimensions(),\n      getPreviousActiveTabIndex: () => {\n        for (let i = 0; i < this.tabList.length; i++) {\n          if (this.tabList[i].active) {\n            return i;\n          }\n        }\n        return -1;\n      },\n      getFocusedTabIndex: () => {\n        const tabElements = this.getTabElements();\n        const activeElement = document.activeElement!;\n        return tabElements.indexOf(activeElement);\n      },\n      getIndexOfTabById: (id) => {\n        for (let i = 0; i < this.tabList.length; i++) {\n          if (this.tabList[i].id === id) {\n            return i;\n          }\n        }\n        return -1;\n      },\n      getTabListLength: () => this.tabList.length,\n      notifyTabActivated: (index) => this.emit<MDCTabBarActivatedEventDetail>(\n          strings.TAB_ACTIVATED_EVENT, {index}, true),\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCTabBarFoundation(adapter);\n  }\n\n  /**\n   * Activates the tab at the given index\n   * @param index The index of the tab\n   */\n  activateTab(index: number) {\n    this.foundation.activateTab(index);\n  }\n\n  /**\n   * Scrolls the tab at the given index into view\n   * @param index THe index of the tab\n   */\n  scrollIntoView(index: number) {\n    this.foundation.scrollIntoView(index);\n  }\n\n  /**\n   * Returns all the tab elements in a nice clean array\n   */\n  private getTabElements(): Element[] {\n    return [].slice.call(this.root.querySelectorAll(strings.TAB_SELECTOR));\n  }\n\n  /**\n   * Instantiates tab components on all child tab elements\n   */\n  private instantiateTabs(tabFactory: MDCTabFactory) {\n    return this.getTabElements().map((el) => {\n      el.id = el.id || `mdc-tab-${++tabIdCounter}`;\n      return tabFactory(el);\n    });\n  }\n\n  /**\n   * Instantiates tab scroller component on the child tab scroller element\n   */\n  private instantiatetabScroller(tabScrollerFactory: MDCTabScrollerFactory):\n      MDCTabScroller|null {\n    const tabScrollerElement =\n        this.root.querySelector(strings.TAB_SCROLLER_SELECTOR);\n    if (tabScrollerElement) {\n      return tabScrollerFactory(tabScrollerElement);\n    }\n    return null;\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst strings = {\n  ARROW_LEFT_KEY: 'ArrowLeft',\n  ARROW_RIGHT_KEY: 'ArrowRight',\n  END_KEY: 'End',\n  ENTER_KEY: 'Enter',\n  HOME_KEY: 'Home',\n  SPACE_KEY: 'Space',\n  TAB_ACTIVATED_EVENT: 'MDCTabBar:activated',\n  TAB_SCROLLER_SELECTOR: '.mdc-tab-scroller',\n  TAB_SELECTOR: '.mdc-tab',\n};\n\nconst numbers = {\n  ARROW_LEFT_KEYCODE: 37,\n  ARROW_RIGHT_KEYCODE: 39,\n  END_KEYCODE: 35,\n  ENTER_KEYCODE: 13,\n  EXTRA_SCROLL_AMOUNT: 20,\n  HOME_KEYCODE: 36,\n  SPACE_KEYCODE: 32,\n};\n\nexport {numbers, strings};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCTabDimensions, MDCTabInteractionEvent} from '@material/tab/types';\nimport {MDCTabBarAdapter} from './adapter';\nimport {numbers, strings} from './constants';\n\nconst ACCEPTABLE_KEYS = new Set<string>();\n// IE11 has no support for new Set with iterable so we need to initialize this by hand\nACCEPTABLE_KEYS.add(strings.ARROW_LEFT_KEY);\nACCEPTABLE_KEYS.add(strings.ARROW_RIGHT_KEY);\nACCEPTABLE_KEYS.add(strings.END_KEY);\nACCEPTABLE_KEYS.add(strings.HOME_KEY);\nACCEPTABLE_KEYS.add(strings.ENTER_KEY);\nACCEPTABLE_KEYS.add(strings.SPACE_KEY);\n\nconst KEYCODE_MAP = new Map<number, string>();\n// IE11 has no support for new Map with iterable so we need to initialize this by hand\nKEYCODE_MAP.set(numbers.ARROW_LEFT_KEYCODE, strings.ARROW_LEFT_KEY);\nKEYCODE_MAP.set(numbers.ARROW_RIGHT_KEYCODE, strings.ARROW_RIGHT_KEY);\nKEYCODE_MAP.set(numbers.END_KEYCODE, strings.END_KEY);\nKEYCODE_MAP.set(numbers.HOME_KEYCODE, strings.HOME_KEY);\nKEYCODE_MAP.set(numbers.ENTER_KEYCODE, strings.ENTER_KEY);\nKEYCODE_MAP.set(numbers.SPACE_KEYCODE, strings.SPACE_KEY);\n\nexport class MDCTabBarFoundation extends MDCFoundation<MDCTabBarAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  static get defaultAdapter(): MDCTabBarAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      scrollTo: () => undefined,\n      incrementScroll: () => undefined,\n      getScrollPosition: () => 0,\n      getScrollContentWidth: () => 0,\n      getOffsetWidth: () => 0,\n      isRTL: () => false,\n      setActiveTab: () => undefined,\n      activateTabAtIndex: () => undefined,\n      deactivateTabAtIndex: () => undefined,\n      focusTabAtIndex: () => undefined,\n      getTabIndicatorClientRectAtIndex: () => ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      getTabDimensionsAtIndex: () => ({rootLeft: 0, rootRight: 0, contentLeft: 0, contentRight: 0}),\n      getPreviousActiveTabIndex: () => -1,\n      getFocusedTabIndex: () => -1,\n      getIndexOfTabById: () => -1,\n      getTabListLength: () => 0,\n      notifyTabActivated: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private useAutomaticActivation = false;\n\n  constructor(adapter?: Partial<MDCTabBarAdapter>) {\n    super({...MDCTabBarFoundation.defaultAdapter, ...adapter});\n  }\n\n  /**\n   * Switches between automatic and manual activation modes.\n   * See https://www.w3.org/TR/wai-aria-practices/#tabpanel for examples.\n   */\n  setUseAutomaticActivation(useAutomaticActivation: boolean) {\n    this.useAutomaticActivation = useAutomaticActivation;\n  }\n\n  activateTab(index: number) {\n    const previousActiveIndex = this.adapter.getPreviousActiveTabIndex();\n    if (!this.indexIsInRange(index) || index === previousActiveIndex) {\n      return;\n    }\n\n    let previousClientRect;\n    if (previousActiveIndex !== -1) {\n      this.adapter.deactivateTabAtIndex(previousActiveIndex);\n      previousClientRect =\n          this.adapter.getTabIndicatorClientRectAtIndex(previousActiveIndex);\n    }\n\n    this.adapter.activateTabAtIndex(index, previousClientRect);\n    this.scrollIntoView(index);\n\n    this.adapter.notifyTabActivated(index);\n  }\n\n  handleKeyDown(evt: KeyboardEvent) {\n    // Get the key from the event\n    const key = this.getKeyFromEvent(evt);\n\n    // Early exit if the event key isn't one of the keyboard navigation keys\n    if (key === undefined) {\n      return;\n    }\n\n    // Prevent default behavior for movement keys, but not for activation keys, since :active is used to apply ripple\n    if (!this.isActivationKey(key)) {\n      evt.preventDefault();\n    }\n\n    if (this.useAutomaticActivation) {\n      if (this.isActivationKey(key)) {\n        return;\n      }\n\n      const index = this.determineTargetFromKey(\n          this.adapter.getPreviousActiveTabIndex(), key);\n      this.adapter.setActiveTab(index);\n      this.scrollIntoView(index);\n    } else {\n      const focusedTabIndex = this.adapter.getFocusedTabIndex();\n      if (this.isActivationKey(key)) {\n        this.adapter.setActiveTab(focusedTabIndex);\n      } else {\n        const index = this.determineTargetFromKey(focusedTabIndex, key);\n        this.adapter.focusTabAtIndex(index);\n        this.scrollIntoView(index);\n      }\n    }\n  }\n\n  /**\n   * Handles the MDCTab:interacted event\n   */\n  handleTabInteraction(evt: MDCTabInteractionEvent) {\n    this.adapter.setActiveTab(this.adapter.getIndexOfTabById(evt.detail.tabId));\n  }\n\n  /**\n   * Scrolls the tab at the given index into view\n   * @param index The tab index to make visible\n   */\n  scrollIntoView(index: number) {\n    // Early exit if the index is out of range\n    if (!this.indexIsInRange(index)) {\n      return;\n    }\n\n    // Always scroll to 0 if scrolling to the 0th index\n    if (index === 0) {\n      this.adapter.scrollTo(0);\n      return;\n    }\n\n    // Always scroll to the max value if scrolling to the Nth index\n    // MDCTabScroller.scrollTo() will never scroll past the max possible value\n    if (index === this.adapter.getTabListLength() - 1) {\n      this.adapter.scrollTo(this.adapter.getScrollContentWidth());\n      return;\n    }\n\n    if (this.isRTL()) {\n      this.scrollIntoViewImplRTL(index);\n      return;\n    }\n\n    this.scrollIntoViewImpl(index);\n  }\n\n  /**\n   * Private method for determining the index of the destination tab based on what key was pressed\n   * @param origin The original index from which to determine the destination\n   * @param key The name of the key\n   */\n  private determineTargetFromKey(origin: number, key: string): number {\n    const isRTL = this.isRTL();\n    const maxIndex = this.adapter.getTabListLength() - 1;\n    const shouldGoToEnd = key === strings.END_KEY;\n    const shouldDecrement = key === strings.ARROW_LEFT_KEY && !isRTL || key === strings.ARROW_RIGHT_KEY && isRTL;\n    const shouldIncrement = key === strings.ARROW_RIGHT_KEY && !isRTL || key === strings.ARROW_LEFT_KEY && isRTL;\n    let index = origin;\n\n    if (shouldGoToEnd) {\n      index = maxIndex;\n    } else if (shouldDecrement) {\n      index -= 1;\n    } else if (shouldIncrement) {\n      index += 1;\n    } else {\n      index = 0;\n    }\n\n    if (index < 0) {\n      index = maxIndex;\n    } else if (index > maxIndex) {\n      index = 0;\n    }\n\n    return index;\n  }\n\n  /**\n   * Calculates the scroll increment that will make the tab at the given index visible\n   * @param index The index of the tab\n   * @param nextIndex The index of the next tab\n   * @param scrollPosition The current scroll position\n   * @param barWidth The width of the Tab Bar\n   */\n  private calculateScrollIncrement(\n      index: number,\n      nextIndex: number,\n      scrollPosition: number,\n      barWidth: number,\n      ): number {\n    const nextTabDimensions = this.adapter.getTabDimensionsAtIndex(nextIndex);\n    const relativeContentLeft = nextTabDimensions.contentLeft - scrollPosition - barWidth;\n    const relativeContentRight = nextTabDimensions.contentRight - scrollPosition;\n    const leftIncrement = relativeContentRight - numbers.EXTRA_SCROLL_AMOUNT;\n    const rightIncrement = relativeContentLeft + numbers.EXTRA_SCROLL_AMOUNT;\n\n    if (nextIndex < index) {\n      return Math.min(leftIncrement, 0);\n    }\n\n    return Math.max(rightIncrement, 0);\n  }\n\n  /**\n   * Calculates the scroll increment that will make the tab at the given index visible in RTL\n   * @param index The index of the tab\n   * @param nextIndex The index of the next tab\n   * @param scrollPosition The current scroll position\n   * @param barWidth The width of the Tab Bar\n   * @param scrollContentWidth The width of the scroll content\n   */\n  private calculateScrollIncrementRTL(\n      index: number,\n      nextIndex: number,\n      scrollPosition: number,\n      barWidth: number,\n      scrollContentWidth: number,\n      ): number {\n    const nextTabDimensions = this.adapter.getTabDimensionsAtIndex(nextIndex);\n    const relativeContentLeft = scrollContentWidth - nextTabDimensions.contentLeft - scrollPosition;\n    const relativeContentRight = scrollContentWidth - nextTabDimensions.contentRight - scrollPosition - barWidth;\n    const leftIncrement = relativeContentRight + numbers.EXTRA_SCROLL_AMOUNT;\n    const rightIncrement = relativeContentLeft - numbers.EXTRA_SCROLL_AMOUNT;\n\n    if (nextIndex > index) {\n      return Math.max(leftIncrement, 0);\n    }\n\n    return Math.min(rightIncrement, 0);\n  }\n\n  /**\n   * Determines the index of the adjacent tab closest to either edge of the Tab Bar\n   * @param index The index of the tab\n   * @param tabDimensions The dimensions of the tab\n   * @param scrollPosition The current scroll position\n   * @param barWidth The width of the tab bar\n   */\n  private findAdjacentTabIndexClosestToEdge(\n      index: number,\n      tabDimensions: MDCTabDimensions,\n      scrollPosition: number,\n      barWidth: number,\n      ): number {\n    /**\n     * Tabs are laid out in the Tab Scroller like this:\n     *\n     *    Scroll Position\n     *    +---+\n     *    |   |   Bar Width\n     *    |   +-----------------------------------+\n     *    |   |                                   |\n     *    |   V                                   V\n     *    |   +-----------------------------------+\n     *    V   |             Tab Scroller          |\n     *    +------------+--------------+-------------------+\n     *    |    Tab     |      Tab     |        Tab        |\n     *    +------------+--------------+-------------------+\n     *        |                                   |\n     *        +-----------------------------------+\n     *\n     * To determine the next adjacent index, we look at the Tab root left and\n     * Tab root right, both relative to the scroll position. If the Tab root\n     * left is less than 0, then we know it's out of view to the left. If the\n     * Tab root right minus the bar width is greater than 0, we know the Tab is\n     * out of view to the right. From there, we either increment or decrement\n     * the index.\n     */\n    const relativeRootLeft = tabDimensions.rootLeft - scrollPosition;\n    const relativeRootRight = tabDimensions.rootRight - scrollPosition - barWidth;\n    const relativeRootDelta = relativeRootLeft + relativeRootRight;\n    const leftEdgeIsCloser = relativeRootLeft < 0 || relativeRootDelta < 0;\n    const rightEdgeIsCloser = relativeRootRight > 0 || relativeRootDelta > 0;\n\n    if (leftEdgeIsCloser) {\n      return index - 1;\n    }\n\n    if (rightEdgeIsCloser) {\n      return index + 1;\n    }\n\n    return -1;\n  }\n\n  /**\n   * Determines the index of the adjacent tab closest to either edge of the Tab Bar in RTL\n   * @param index The index of the tab\n   * @param tabDimensions The dimensions of the tab\n   * @param scrollPosition The current scroll position\n   * @param barWidth The width of the tab bar\n   * @param scrollContentWidth The width of the scroller content\n   */\n  private findAdjacentTabIndexClosestToEdgeRTL(\n      index: number,\n      tabDimensions: MDCTabDimensions,\n      scrollPosition: number,\n      barWidth: number,\n      scrollContentWidth: number,\n      ): number {\n    const rootLeft = scrollContentWidth - tabDimensions.rootLeft - barWidth - scrollPosition;\n    const rootRight = scrollContentWidth - tabDimensions.rootRight - scrollPosition;\n    const rootDelta = rootLeft + rootRight;\n    const leftEdgeIsCloser = rootLeft > 0 || rootDelta > 0;\n    const rightEdgeIsCloser = rootRight < 0 || rootDelta < 0;\n\n    if (leftEdgeIsCloser) {\n      return index + 1;\n    }\n\n    if (rightEdgeIsCloser) {\n      return index - 1;\n    }\n\n    return -1;\n  }\n\n  /**\n   * Returns the key associated with a keydown event\n   * @param evt The keydown event\n   */\n  private getKeyFromEvent(evt: KeyboardEvent): string {\n    if (ACCEPTABLE_KEYS.has(evt.key)) {\n      return evt.key;\n    }\n    return KEYCODE_MAP.get(evt.keyCode)!;\n  }\n\n  private isActivationKey(key: string) {\n    return key === strings.SPACE_KEY || key === strings.ENTER_KEY;\n  }\n\n  /**\n   * Returns whether a given index is inclusively between the ends\n   * @param index The index to test\n   */\n  private indexIsInRange(index: number) {\n    return index >= 0 && index < this.adapter.getTabListLength();\n  }\n\n  /**\n   * Returns the view's RTL property\n   */\n  private isRTL(): boolean {\n    return this.adapter.isRTL();\n  }\n\n  /**\n   * Scrolls the tab at the given index into view for left-to-right user agents.\n   * @param index The index of the tab to scroll into view\n   */\n  private scrollIntoViewImpl(index: number) {\n    const scrollPosition = this.adapter.getScrollPosition();\n    const barWidth = this.adapter.getOffsetWidth();\n    const tabDimensions = this.adapter.getTabDimensionsAtIndex(index);\n    const nextIndex = this.findAdjacentTabIndexClosestToEdge(\n        index, tabDimensions, scrollPosition, barWidth);\n\n    if (!this.indexIsInRange(nextIndex)) {\n      return;\n    }\n\n    const scrollIncrement = this.calculateScrollIncrement(\n        index, nextIndex, scrollPosition, barWidth);\n    this.adapter.incrementScroll(scrollIncrement);\n  }\n\n  /**\n   * Scrolls the tab at the given index into view in RTL\n   * @param index The tab index to make visible\n   */\n  private scrollIntoViewImplRTL(index: number) {\n    const scrollPosition = this.adapter.getScrollPosition();\n    const barWidth = this.adapter.getOffsetWidth();\n    const tabDimensions = this.adapter.getTabDimensionsAtIndex(index);\n    const scrollWidth = this.adapter.getScrollContentWidth();\n    const nextIndex = this.findAdjacentTabIndexClosestToEdgeRTL(\n        index, tabDimensions, scrollPosition, barWidth, scrollWidth);\n\n    if (!this.indexIsInRange(nextIndex)) {\n      return;\n    }\n\n    const scrollIncrement = this.calculateScrollIncrementRTL(\n        index, nextIndex, scrollPosition, barWidth, scrollWidth);\n    this.adapter.incrementScroll(scrollIncrement);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTabBarFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport interface MDCTabBarActivatedEventDetail {\n  index: number;\n}\n\n// Note: CustomEvent<T> is not supported by Closure Compiler.\n\nexport interface MDCTabBarActivatedEvent extends Event {\n  readonly detail: MDCTabBarActivatedEventDetail;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTabIndicatorAdapter {\n  /**\n   * Adds the given className to the root element.\n   * @param className The className to add\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes the given className from the root element.\n   * @param className The className to remove\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Returns the client rect of the content element.\n   */\n  computeContentClientRect(): ClientRect;\n\n  /**\n   * Sets a style property of the content element to the passed value\n   * @param propName The style property name to set\n   * @param value The style property value\n   */\n  setContentStyleProperty(propName: string, value: string): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\n\nimport {MDCTabIndicatorAdapter} from './adapter';\nimport {MDCFadingTabIndicatorFoundation} from './fading-foundation';\nimport {MDCTabIndicatorFoundation} from './foundation';\nimport {MDCSlidingTabIndicatorFoundation} from './sliding-foundation';\n\nexport type MDCTabIndicatorFactory = (el: Element, foundation?: MDCTabIndicatorFoundation) => MDCTabIndicator;\n\nexport class MDCTabIndicator extends MDCComponent<MDCTabIndicatorFoundation> {\n  static attachTo(root: Element): MDCTabIndicator {\n    return new MDCTabIndicator(root);\n  }\n\n  private content!: HTMLElement;  // assigned in initialize()\n\n  initialize() {\n    this.content = this.root.querySelector<HTMLElement>(\n        MDCTabIndicatorFoundation.strings.CONTENT_SELECTOR)!;\n  }\n\n  computeContentClientRect(): ClientRect {\n    return this.foundation.computeContentClientRect();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCTabIndicatorAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      computeContentClientRect: () => this.content.getBoundingClientRect(),\n      setContentStyleProperty: (prop, value) => {\n        this.content.style.setProperty(prop, value);\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n\n    if (this.root.classList.contains(\n            MDCTabIndicatorFoundation.cssClasses.FADE)) {\n      return new MDCFadingTabIndicatorFoundation(adapter);\n    }\n\n    // Default to the sliding indicator\n    return new MDCSlidingTabIndicatorFoundation(adapter);\n  }\n\n  activate(previousIndicatorClientRect?: ClientRect) {\n    this.foundation.activate(previousIndicatorClientRect);\n  }\n\n  deactivate() {\n    this.foundation.deactivate();\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  ACTIVE: 'mdc-tab-indicator--active',\n  FADE: 'mdc-tab-indicator--fade',\n  NO_TRANSITION: 'mdc-tab-indicator--no-transition',\n};\n\nconst strings = {\n  CONTENT_SELECTOR: '.mdc-tab-indicator__content',\n};\n\nexport {\n  cssClasses,\n  strings,\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTabIndicatorFoundation} from './foundation';\n\n/* istanbul ignore next: subclass is not a branch statement */\nexport class MDCFadingTabIndicatorFoundation extends MDCTabIndicatorFoundation {\n  activate() {\n    this.adapter.addClass(MDCTabIndicatorFoundation.cssClasses.ACTIVE);\n  }\n\n  deactivate() {\n    this.adapter.removeClass(MDCTabIndicatorFoundation.cssClasses.ACTIVE);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCFadingTabIndicatorFoundation;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCTabIndicatorAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport abstract class MDCTabIndicatorFoundation extends MDCFoundation<MDCTabIndicatorAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCTabIndicatorAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      computeContentClientRect: () => ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      setContentStyleProperty: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  constructor(adapter?: Partial<MDCTabIndicatorAdapter>) {\n    super({...MDCTabIndicatorFoundation.defaultAdapter, ...adapter});\n  }\n\n  computeContentClientRect(): ClientRect {\n    return this.adapter.computeContentClientRect();\n  }\n\n  abstract activate(previousIndicatorClientRect?: ClientRect): void;\n  abstract deactivate(): void;\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTabIndicatorFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './fading-foundation';\nexport * from './sliding-foundation';\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTabIndicatorFoundation} from './foundation';\n\n/* istanbul ignore next: subclass is not a branch statement */\nexport class MDCSlidingTabIndicatorFoundation extends MDCTabIndicatorFoundation {\n  activate(previousIndicatorClientRect?: ClientRect) {\n    // Early exit if no indicator is present to handle cases where an indicator\n    // may be activated without a prior indicator state\n    if (!previousIndicatorClientRect) {\n      this.adapter.addClass(MDCTabIndicatorFoundation.cssClasses.ACTIVE);\n      return;\n    }\n\n    // This animation uses the FLIP approach. You can read more about it at the link below:\n    // https://aerotwist.com/blog/flip-your-animations/\n\n    // Calculate the dimensions based on the dimensions of the previous indicator\n    const currentClientRect = this.computeContentClientRect();\n    const widthDelta = previousIndicatorClientRect.width / currentClientRect.width;\n    const xPosition = previousIndicatorClientRect.left - currentClientRect.left;\n    this.adapter.addClass(MDCTabIndicatorFoundation.cssClasses.NO_TRANSITION);\n    this.adapter.setContentStyleProperty(\n        'transform', `translateX(${xPosition}px) scaleX(${widthDelta})`);\n\n    // Force repaint before updating classes and transform to ensure the transform properly takes effect\n    this.computeContentClientRect();\n\n    this.adapter.removeClass(\n        MDCTabIndicatorFoundation.cssClasses.NO_TRANSITION);\n    this.adapter.addClass(MDCTabIndicatorFoundation.cssClasses.ACTIVE);\n    this.adapter.setContentStyleProperty('transform', '');\n  }\n\n  deactivate() {\n    this.adapter.removeClass(MDCTabIndicatorFoundation.cssClasses.ACTIVE);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCSlidingTabIndicatorFoundation;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTabScrollerAdapter {\n  /**\n   * Adds the given className to the root element.\n   * @param className The className to add\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes the given className from the root element.\n   * @param className The className to remove\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Adds the given className to the scroll area element.\n   * @param className The className to add\n   */\n  addScrollAreaClass(className: string): void;\n\n  /**\n   * Returns whether the event target matches given className.\n   * @param evtTarget The event target\n   * @param selector The selector to check\n   */\n  eventTargetMatchesSelector(evtTarget: EventTarget, selector: string): boolean;\n\n  /**\n   * Sets a style property of the area element to the passed value.\n   * @param propName The style property name to set\n   * @param value The style property value\n   */\n  setScrollAreaStyleProperty(propName: string, value: string): void;\n\n  /**\n   * Sets a style property of the content element to the passed value.\n   * @param propName The style property name to set\n   * @param value The style property value\n   */\n  setScrollContentStyleProperty(propName: string, value: string): void;\n\n  /**\n   * Returns the scroll content element's computed style value of the given css property `propertyName`.\n   * We achieve this via `getComputedStyle(...).getPropertyValue(propertyName)`.\n   */\n  getScrollContentStyleValue(propertyName: string): string;\n\n  /**\n   * Sets the scrollLeft value of the scroll area element to the passed value.\n   * @param scrollLeft The new scrollLeft value\n   */\n  setScrollAreaScrollLeft(scrollLeft: number): void;\n\n  /**\n   * Returns the scrollLeft value of the scroll area element.\n   */\n  getScrollAreaScrollLeft(): number;\n\n  /**\n   * Returns the offsetWidth of the scroll content element.\n   */\n  getScrollContentOffsetWidth(): number;\n\n  /**\n   * Returns the offsetWitdth of the scroll area element.\n   */\n  getScrollAreaOffsetWidth(): number;\n\n  /**\n   * Returns the bounding client rect of the scroll area element.\n   */\n  computeScrollAreaClientRect(): ClientRect;\n\n  /**\n   * Returns the bounding client rect of the scroll content element.\n   */\n  computeScrollContentClientRect(): ClientRect;\n\n  /**\n   * Returns the height of the browser's horizontal scrollbars (in px).\n   */\n  computeHorizontalScrollbarHeight(): number;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {applyPassive} from '@material/dom/events';\nimport {matches} from '@material/dom/ponyfill';\nimport {MDCTabScrollerAdapter} from './adapter';\nimport {MDCTabScrollerFoundation} from './foundation';\nimport * as util from './util';\n\ntype InteractionEventType = 'wheel' | 'touchstart' | 'pointerdown' | 'mousedown' | 'keydown';\n\nexport type MDCTabScrollerFactory = (el: Element, foundation?: MDCTabScrollerFoundation) => MDCTabScroller;\n\nexport class MDCTabScroller extends MDCComponent<MDCTabScrollerFoundation> {\n  static attachTo(root: Element): MDCTabScroller {\n    return new MDCTabScroller(root);\n  }\n\n  private content!: HTMLElement;  // assigned in initialize()\n  private area!: HTMLElement;     // assigned in initialize()\n  private handleInteraction!:\n      SpecificEventListener<InteractionEventType>;  // assigned in\n                                                    // initialSyncWithDOM()\n  private handleTransitionEnd!:\n      SpecificEventListener<'transitionend'>;  // assigned in\n                                               // initialSyncWithDOM()\n\n  initialize() {\n    this.area = this.root.querySelector<HTMLElement>(\n        MDCTabScrollerFoundation.strings.AREA_SELECTOR)!;\n    this.content = this.root.querySelector<HTMLElement>(\n        MDCTabScrollerFoundation.strings.CONTENT_SELECTOR)!;\n  }\n\n  initialSyncWithDOM() {\n    this.handleInteraction = () => {\n      this.foundation.handleInteraction();\n    };\n    this.handleTransitionEnd = (evt) => {\n      this.foundation.handleTransitionEnd(evt);\n    };\n\n    this.area.addEventListener('wheel', this.handleInteraction, applyPassive());\n    this.area.addEventListener(\n        'touchstart', this.handleInteraction, applyPassive());\n    this.area.addEventListener(\n        'pointerdown', this.handleInteraction, applyPassive());\n    this.area.addEventListener(\n        'mousedown', this.handleInteraction, applyPassive());\n    this.area.addEventListener(\n        'keydown', this.handleInteraction, applyPassive());\n    this.content.addEventListener('transitionend', this.handleTransitionEnd);\n  }\n\n  destroy() {\n    super.destroy();\n\n    this.area.removeEventListener(\n        'wheel', this.handleInteraction, applyPassive());\n    this.area.removeEventListener(\n        'touchstart', this.handleInteraction, applyPassive());\n    this.area.removeEventListener(\n        'pointerdown', this.handleInteraction, applyPassive());\n    this.area.removeEventListener(\n        'mousedown', this.handleInteraction, applyPassive());\n    this.area.removeEventListener(\n        'keydown', this.handleInteraction, applyPassive());\n    this.content.removeEventListener('transitionend', this.handleTransitionEnd);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCTabScrollerAdapter = {\n      eventTargetMatchesSelector: (evtTarget, selector) =>\n          matches(evtTarget as Element, selector),\n      addClass: (className) => {\n        this.root.classList.add(className);\n      },\n      removeClass: (className) => {\n        this.root.classList.remove(className);\n      },\n      addScrollAreaClass: (className) => {\n        this.area.classList.add(className);\n      },\n      setScrollAreaStyleProperty: (prop, value) => {\n        this.area.style.setProperty(prop, value);\n      },\n      setScrollContentStyleProperty: (prop, value) => {\n        this.content.style.setProperty(prop, value);\n      },\n      getScrollContentStyleValue: (propName) =>\n          window.getComputedStyle(this.content).getPropertyValue(propName),\n      setScrollAreaScrollLeft: (scrollX) => this.area.scrollLeft = scrollX,\n      getScrollAreaScrollLeft: () => this.area.scrollLeft,\n      getScrollContentOffsetWidth: () => this.content.offsetWidth,\n      getScrollAreaOffsetWidth: () => this.area.offsetWidth,\n      computeScrollAreaClientRect: () => this.area.getBoundingClientRect(),\n      computeScrollContentClientRect: () =>\n          this.content.getBoundingClientRect(),\n      computeHorizontalScrollbarHeight: () =>\n          util.computeHorizontalScrollbarHeight(document),\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCTabScrollerFoundation(adapter);\n  }\n\n  /**\n   * Returns the current visual scroll position\n   */\n  getScrollPosition(): number {\n    return this.foundation.getScrollPosition();\n  }\n\n  /**\n   * Returns the width of the scroll content\n   */\n  getScrollContentWidth(): number {\n    return this.content.offsetWidth;\n  }\n\n  /**\n   * Increments the scroll value by the given amount\n   * @param scrollXIncrement The pixel value by which to increment the scroll value\n   */\n  incrementScroll(scrollXIncrement: number) {\n    this.foundation.incrementScroll(scrollXIncrement);\n  }\n\n  /**\n   * Scrolls to the given pixel position\n   * @param scrollX The pixel value to scroll to\n   */\n  scrollTo(scrollX: number) {\n    this.foundation.scrollTo(scrollX);\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  ANIMATING: 'mdc-tab-scroller--animating',\n  SCROLL_AREA_SCROLL: 'mdc-tab-scroller__scroll-area--scroll',\n  SCROLL_TEST: 'mdc-tab-scroller__test',\n};\n\nconst strings = {\n  AREA_SELECTOR: '.mdc-tab-scroller__scroll-area',\n  CONTENT_SELECTOR: '.mdc-tab-scroller__scroll-content',\n};\n\nexport {\n  cssClasses,\n  strings,\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCTabScrollerAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\nimport {MDCTabScrollerRTLDefault} from './rtl-default-scroller';\nimport {MDCTabScrollerRTLNegative} from './rtl-negative-scroller';\nimport {MDCTabScrollerRTLReverse} from './rtl-reverse-scroller';\nimport {MDCTabScrollerRTL} from './rtl-scroller';\nimport {MDCTabScrollerAnimation, MDCTabScrollerHorizontalEdges} from './types';\n\nexport class MDCTabScrollerFoundation extends MDCFoundation<MDCTabScrollerAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCTabScrollerAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      eventTargetMatchesSelector: () => false,\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      addScrollAreaClass: () => undefined,\n      setScrollAreaStyleProperty: () => undefined,\n      setScrollContentStyleProperty: () => undefined,\n      getScrollContentStyleValue: () => '',\n      setScrollAreaScrollLeft: () => undefined,\n      getScrollAreaScrollLeft: () => 0,\n      getScrollContentOffsetWidth: () => 0,\n      getScrollAreaOffsetWidth: () => 0,\n      computeScrollAreaClientRect: () => ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      computeScrollContentClientRect: () => ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      computeHorizontalScrollbarHeight: () => 0,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  /**\n   * Controls whether we should handle the transitionend and interaction events during the animation.\n   */\n  private isAnimating = false;\n\n  /**\n   * The MDCTabScrollerRTL instance varies per browser and allows us to encapsulate the peculiar browser behavior\n   * of RTL scrolling in it's own class.\n   */\n  private rtlScrollerInstance?: MDCTabScrollerRTL;\n\n  constructor(adapter?: Partial<MDCTabScrollerAdapter>) {\n    super({...MDCTabScrollerFoundation.defaultAdapter, ...adapter});\n  }\n\n  init() {\n    // Compute horizontal scrollbar height on scroller with overflow initially hidden, then update overflow to scroll\n    // and immediately adjust bottom margin to avoid the scrollbar initially appearing before JS runs.\n    const horizontalScrollbarHeight =\n        this.adapter.computeHorizontalScrollbarHeight();\n    this.adapter.setScrollAreaStyleProperty(\n        'margin-bottom', -horizontalScrollbarHeight + 'px');\n    this.adapter.addScrollAreaClass(\n        MDCTabScrollerFoundation.cssClasses.SCROLL_AREA_SCROLL);\n  }\n\n  /**\n   * Computes the current visual scroll position\n   */\n  getScrollPosition(): number {\n    if (this.isRTL()) {\n      return this.computeCurrentScrollPositionRTL();\n    }\n\n    const currentTranslateX = this.calculateCurrentTranslateX();\n    const scrollLeft = this.adapter.getScrollAreaScrollLeft();\n    return scrollLeft - currentTranslateX;\n  }\n\n  /**\n   * Handles interaction events that occur during transition\n   */\n  handleInteraction() {\n    // Early exit if we aren't animating\n    if (!this.isAnimating) {\n      return;\n    }\n\n    // Prevent other event listeners from handling this event\n    this.stopScrollAnimation();\n  }\n\n  /**\n   * Handles the transitionend event\n   */\n  handleTransitionEnd(evt: Event) {\n    // Early exit if we aren't animating or the event was triggered by a different element.\n    const evtTarget = evt.target as Element;\n    if (!this.isAnimating ||\n        !this.adapter.eventTargetMatchesSelector(\n            evtTarget, MDCTabScrollerFoundation.strings.CONTENT_SELECTOR)) {\n      return;\n    }\n\n    this.isAnimating = false;\n    this.adapter.removeClass(MDCTabScrollerFoundation.cssClasses.ANIMATING);\n  }\n\n  /**\n   * Increment the scroll value by the scrollXIncrement using animation.\n   * @param scrollXIncrement The value by which to increment the scroll position\n   */\n  incrementScroll(scrollXIncrement: number) {\n    // Early exit for non-operational increment values\n    if (scrollXIncrement === 0) {\n      return;\n    }\n\n    this.animate(this.getIncrementScrollOperation(scrollXIncrement));\n  }\n\n  /**\n   * Increment the scroll value by the scrollXIncrement without animation.\n   * @param scrollXIncrement The value by which to increment the scroll position\n   */\n  incrementScrollImmediate(scrollXIncrement: number) {\n    // Early exit for non-operational increment values\n    if (scrollXIncrement === 0) {\n      return;\n    }\n\n    const operation = this.getIncrementScrollOperation(scrollXIncrement);\n    if (operation.scrollDelta === 0) {\n      return;\n    }\n\n    this.stopScrollAnimation();\n    this.adapter.setScrollAreaScrollLeft(operation.finalScrollPosition);\n  }\n\n  /**\n   * Scrolls to the given scrollX value\n   */\n  scrollTo(scrollX: number) {\n    if (this.isRTL()) {\n      this.scrollToImplRTL(scrollX);\n      return;\n    }\n\n    this.scrollToImpl(scrollX);\n  }\n\n  /**\n   * @return Browser-specific {@link MDCTabScrollerRTL} instance.\n   */\n  getRTLScroller(): MDCTabScrollerRTL {\n    if (!this.rtlScrollerInstance) {\n      this.rtlScrollerInstance = this.rtlScrollerFactory();\n    }\n\n    return this.rtlScrollerInstance;\n  }\n\n  /**\n   * @return translateX value from a CSS matrix transform function string.\n   */\n  private calculateCurrentTranslateX(): number {\n    const transformValue = this.adapter.getScrollContentStyleValue('transform');\n    // Early exit if no transform is present\n    if (transformValue === 'none') {\n      return 0;\n    }\n\n    // The transform value comes back as a matrix transformation in the form\n    // of `matrix(a, b, c, d, tx, ty)`. We only care about tx (translateX) so\n    // we're going to grab all the parenthesized values, strip out tx, and\n    // parse it.\n    const match = /\\((.+?)\\)/.exec(transformValue);\n    if (!match) {\n      return 0;\n    }\n\n    const matrixParams = match[1];\n\n    // tslint:disable-next-line:ban-ts-ignore \"Unused vars\" should be a linter warning, not a compiler error.\n    // @ts-ignore These unused variables should retain their semantic names for clarity.\n    const [a, b, c, d, tx, ty] = matrixParams.split(',');\n\n    return parseFloat(tx); // tslint:disable-line:ban\n  }\n\n  /**\n   * Calculates a safe scroll value that is > 0 and < the max scroll value\n   * @param scrollX The distance to scroll\n   */\n  private clampScrollValue(scrollX: number): number {\n    const edges = this.calculateScrollEdges();\n    return Math.min(Math.max(edges.left, scrollX), edges.right);\n  }\n\n  private computeCurrentScrollPositionRTL(): number {\n    const translateX = this.calculateCurrentTranslateX();\n    return this.getRTLScroller().getScrollPositionRTL(translateX);\n  }\n\n  private calculateScrollEdges(): MDCTabScrollerHorizontalEdges {\n    const contentWidth = this.adapter.getScrollContentOffsetWidth();\n    const rootWidth = this.adapter.getScrollAreaOffsetWidth();\n    return {\n      left: 0,\n      right: contentWidth - rootWidth,\n    };\n  }\n\n  /**\n   * Internal scroll method\n   * @param scrollX The new scroll position\n   */\n  private scrollToImpl(scrollX: number) {\n    const currentScrollX = this.getScrollPosition();\n    const safeScrollX = this.clampScrollValue(scrollX);\n    const scrollDelta = safeScrollX - currentScrollX;\n    this.animate({\n      finalScrollPosition: safeScrollX,\n      scrollDelta,\n    });\n  }\n\n  /**\n   * Internal RTL scroll method\n   * @param scrollX The new scroll position\n   */\n  private scrollToImplRTL(scrollX: number) {\n    const animation = this.getRTLScroller().scrollToRTL(scrollX);\n    this.animate(animation);\n  }\n\n  /**\n   * Internal method to compute the increment scroll operation values.\n   * @param scrollX The desired scroll position increment\n   * @return MDCTabScrollerAnimation with the sanitized values for performing the scroll operation.\n   */\n  private getIncrementScrollOperation(scrollX: number):\n      MDCTabScrollerAnimation {\n    if (this.isRTL()) {\n      return this.getRTLScroller().incrementScrollRTL(scrollX);\n    }\n\n    const currentScrollX = this.getScrollPosition();\n    const targetScrollX = scrollX + currentScrollX;\n    const safeScrollX = this.clampScrollValue(targetScrollX);\n    const scrollDelta = safeScrollX - currentScrollX;\n    return {\n      finalScrollPosition: safeScrollX,\n      scrollDelta,\n    };\n  }\n\n  /**\n   * Animates the tab scrolling\n   * @param animation The animation to apply\n   */\n  private animate(animation: MDCTabScrollerAnimation) {\n    // Early exit if translateX is 0, which means there's no animation to perform\n    if (animation.scrollDelta === 0) {\n      return;\n    }\n\n    this.stopScrollAnimation();\n    // This animation uses the FLIP approach.\n    // Read more here: https://aerotwist.com/blog/flip-your-animations/\n    this.adapter.setScrollAreaScrollLeft(animation.finalScrollPosition);\n    this.adapter.setScrollContentStyleProperty(\n        'transform', `translateX(${animation.scrollDelta}px)`);\n    // Force repaint\n    this.adapter.computeScrollAreaClientRect();\n\n    requestAnimationFrame(() => {\n      this.adapter.addClass(MDCTabScrollerFoundation.cssClasses.ANIMATING);\n      this.adapter.setScrollContentStyleProperty('transform', 'none');\n    });\n\n    this.isAnimating = true;\n  }\n\n  /**\n   * Stops scroll animation\n   */\n  private stopScrollAnimation() {\n    this.isAnimating = false;\n    const currentScrollPosition = this.getAnimatingScrollPosition();\n    this.adapter.removeClass(MDCTabScrollerFoundation.cssClasses.ANIMATING);\n    this.adapter.setScrollContentStyleProperty('transform', 'translateX(0px)');\n    this.adapter.setScrollAreaScrollLeft(currentScrollPosition);\n  }\n\n  /**\n   * Gets the current scroll position during animation\n   */\n  private getAnimatingScrollPosition(): number {\n    const currentTranslateX = this.calculateCurrentTranslateX();\n    const scrollLeft = this.adapter.getScrollAreaScrollLeft();\n    if (this.isRTL()) {\n      return this.getRTLScroller().getAnimatingScrollPosition(scrollLeft, currentTranslateX);\n    }\n\n    return scrollLeft - currentTranslateX;\n  }\n\n  /**\n   * Determines the RTL Scroller to use\n   */\n  private rtlScrollerFactory(): MDCTabScrollerRTL {\n    // Browsers have three different implementations of scrollLeft in RTL mode,\n    // dependent on the browser. The behavior is based off the max LTR\n    // scrollLeft value and 0.\n    //\n    // * Default scrolling in RTL *\n    //    - Left-most value: 0\n    //    - Right-most value: Max LTR scrollLeft value\n    //\n    // * Negative scrolling in RTL *\n    //    - Left-most value: Negated max LTR scrollLeft value\n    //    - Right-most value: 0\n    //\n    // * Reverse scrolling in RTL *\n    //    - Left-most value: Max LTR scrollLeft value\n    //    - Right-most value: 0\n    //\n    // We use those principles below to determine which RTL scrollLeft\n    // behavior is implemented in the current browser.\n    const initialScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    this.adapter.setScrollAreaScrollLeft(initialScrollLeft - 1);\n    const newScrollLeft = this.adapter.getScrollAreaScrollLeft();\n\n    // If the newScrollLeft value is negative,then we know that the browser has\n    // implemented negative RTL scrolling, since all other implementations have\n    // only positive values.\n    if (newScrollLeft < 0) {\n      // Undo the scrollLeft test check\n      this.adapter.setScrollAreaScrollLeft(initialScrollLeft);\n      return new MDCTabScrollerRTLNegative(this.adapter);\n    }\n\n    const rootClientRect = this.adapter.computeScrollAreaClientRect();\n    const contentClientRect = this.adapter.computeScrollContentClientRect();\n    const rightEdgeDelta = Math.round(contentClientRect.right - rootClientRect.right);\n    // Undo the scrollLeft test check\n    this.adapter.setScrollAreaScrollLeft(initialScrollLeft);\n\n    // By calculating the clientRect of the root element and the clientRect of\n    // the content element, we can determine how much the scroll value changed\n    // when we performed the scrollLeft subtraction above.\n    if (rightEdgeDelta === newScrollLeft) {\n      return new MDCTabScrollerRTLReverse(this.adapter);\n    }\n\n    return new MDCTabScrollerRTLDefault(this.adapter);\n  }\n\n  private isRTL(): boolean {\n    return this.adapter.getScrollContentStyleValue('direction') === 'rtl';\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTabScrollerFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport * as util from './util';\n\nexport {util};\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTabScrollerRTL} from './rtl-scroller';\nimport {MDCTabScrollerAnimation, MDCTabScrollerHorizontalEdges} from './types';\n\nexport class MDCTabScrollerRTLDefault extends MDCTabScrollerRTL {\n  getScrollPositionRTL(): number {\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    const {right} = this.calculateScrollEdges();\n    // Scroll values on most browsers are ints instead of floats so we round\n    return Math.round(right - currentScrollLeft);\n  }\n\n  scrollToRTL(scrollX: number): MDCTabScrollerAnimation {\n    const edges = this.calculateScrollEdges();\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    const clampedScrollLeft = this.clampScrollValue(edges.right - scrollX);\n    return {\n      finalScrollPosition: clampedScrollLeft,\n      scrollDelta: clampedScrollLeft - currentScrollLeft,\n    };\n  }\n\n  incrementScrollRTL(scrollX: number): MDCTabScrollerAnimation {\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    const clampedScrollLeft =\n        this.clampScrollValue(currentScrollLeft - scrollX);\n    return {\n      finalScrollPosition: clampedScrollLeft,\n      scrollDelta: clampedScrollLeft - currentScrollLeft,\n    };\n  }\n\n  getAnimatingScrollPosition(scrollX: number): number {\n    return scrollX;\n  }\n\n  private calculateScrollEdges(): MDCTabScrollerHorizontalEdges {\n    const contentWidth = this.adapter.getScrollContentOffsetWidth();\n    const rootWidth = this.adapter.getScrollAreaOffsetWidth();\n    return {\n      left: 0,\n      right: contentWidth - rootWidth,\n    };\n  }\n\n  private clampScrollValue(scrollX: number): number {\n    const edges = this.calculateScrollEdges();\n    return Math.min(Math.max(edges.left, scrollX), edges.right);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTabScrollerRTLDefault;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTabScrollerRTL} from './rtl-scroller';\nimport {MDCTabScrollerAnimation, MDCTabScrollerHorizontalEdges} from './types';\n\nexport class MDCTabScrollerRTLNegative extends MDCTabScrollerRTL {\n  getScrollPositionRTL(translateX: number): number {\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    return Math.round(translateX - currentScrollLeft);\n  }\n\n  scrollToRTL(scrollX: number): MDCTabScrollerAnimation {\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    const clampedScrollLeft = this.clampScrollValue(-scrollX);\n    return {\n      finalScrollPosition: clampedScrollLeft,\n      scrollDelta: clampedScrollLeft - currentScrollLeft,\n    };\n  }\n\n  incrementScrollRTL(scrollX: number): MDCTabScrollerAnimation {\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    const clampedScrollLeft =\n        this.clampScrollValue(currentScrollLeft - scrollX);\n    return {\n      finalScrollPosition: clampedScrollLeft,\n      scrollDelta: clampedScrollLeft - currentScrollLeft,\n    };\n  }\n\n  getAnimatingScrollPosition(scrollX: number, translateX: number): number {\n    return scrollX - translateX;\n  }\n\n  private calculateScrollEdges(): MDCTabScrollerHorizontalEdges {\n    const contentWidth = this.adapter.getScrollContentOffsetWidth();\n    const rootWidth = this.adapter.getScrollAreaOffsetWidth();\n    return {\n      left: rootWidth - contentWidth,\n      right: 0,\n    };\n  }\n\n  private clampScrollValue(scrollX: number): number {\n    const edges = this.calculateScrollEdges();\n    return Math.max(Math.min(edges.right, scrollX), edges.left);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTabScrollerRTLNegative;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTabScrollerRTL} from './rtl-scroller';\nimport {MDCTabScrollerAnimation, MDCTabScrollerHorizontalEdges} from './types';\n\nexport class MDCTabScrollerRTLReverse extends MDCTabScrollerRTL {\n  getScrollPositionRTL(translateX: number): number {\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    // Scroll values on most browsers are ints instead of floats so we round\n    return Math.round(currentScrollLeft - translateX);\n  }\n\n  scrollToRTL(scrollX: number): MDCTabScrollerAnimation {\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    const clampedScrollLeft = this.clampScrollValue(scrollX);\n    return {\n      finalScrollPosition: clampedScrollLeft,\n      scrollDelta: currentScrollLeft - clampedScrollLeft,\n    };\n  }\n\n  incrementScrollRTL(scrollX: number): MDCTabScrollerAnimation {\n    const currentScrollLeft = this.adapter.getScrollAreaScrollLeft();\n    const clampedScrollLeft =\n        this.clampScrollValue(currentScrollLeft + scrollX);\n    return {\n      finalScrollPosition: clampedScrollLeft,\n      scrollDelta: currentScrollLeft - clampedScrollLeft,\n    };\n  }\n\n  getAnimatingScrollPosition(scrollX: number, translateX: number): number {\n    return scrollX + translateX;\n  }\n\n  private calculateScrollEdges(): MDCTabScrollerHorizontalEdges {\n    const contentWidth = this.adapter.getScrollContentOffsetWidth();\n    const rootWidth = this.adapter.getScrollAreaOffsetWidth();\n    return {\n      left: contentWidth - rootWidth,\n      right: 0,\n    };\n  }\n\n  private clampScrollValue(scrollX: number): number {\n    const edges = this.calculateScrollEdges();\n    return Math.min(Math.max(edges.right, scrollX), edges.left);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTabScrollerRTLReverse;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTabScrollerAdapter} from './adapter';\nimport {MDCTabScrollerAnimation} from './types';\n\nexport abstract class MDCTabScrollerRTL {\n  constructor(protected readonly adapter: MDCTabScrollerAdapter) {}\n\n  abstract getScrollPositionRTL(translateX: number): number;\n\n  abstract scrollToRTL(scrollX: number): MDCTabScrollerAnimation;\n\n  abstract incrementScrollRTL(scrollX: number): MDCTabScrollerAnimation;\n\n  /**\n   * @param scrollX The current scrollX position\n   * @param translateX The current translateX position\n   */\n  abstract getAnimatingScrollPosition(scrollX: number, translateX: number): number;\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTabScrollerRTL;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * MDCTabScrollerAnimation contains the values required for animating from the\n * current scroll position to the new scroll position. The \"finalScrollPosition\"\n * value represents the new scroll position while the \"scrollDelta\" value is the\n * corresponding transformation that is applied to the scroll content. Together,\n * they create the animation by first updating the scroll value then applying\n * the transformation and animating the transition. Both pieces are necessary\n * for the scroll animation to work. The values are used as-is by the tab\n * scroller animation method, ensuring that all logic for determining scroll\n * position or transformation is abstracted away from the animation method.\n */\nexport interface MDCTabScrollerAnimation {\n  finalScrollPosition: number;\n  scrollDelta: number;\n}\n\n/**\n * MDCTabScrollerHorizontalEdges represents the left and right edges of the\n * scroll content. These values vary depending on how scrolling in RTL is\n * implemented by the browser. One value is always 0 and one value is always\n * the max scrollable value as either a positive or negative integer.\n */\nexport interface MDCTabScrollerHorizontalEdges {\n  left: number;\n  right: number;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {cssClasses} from './constants';\n\n/**\n * Stores result from computeHorizontalScrollbarHeight to avoid redundant processing.\n */\nlet horizontalScrollbarHeight_: number | undefined;\n\n/**\n * Computes the height of browser-rendered horizontal scrollbars using a self-created test element.\n * May return 0 (e.g. on OS X browsers under default configuration).\n */\nexport function computeHorizontalScrollbarHeight(documentObj: Document, shouldCacheResult = true): number {\n  if (shouldCacheResult && typeof horizontalScrollbarHeight_ !== 'undefined') {\n    return horizontalScrollbarHeight_;\n  }\n\n  const el = documentObj.createElement('div');\n  el.classList.add(cssClasses.SCROLL_TEST);\n  documentObj.body.appendChild(el);\n\n  const horizontalScrollbarHeight = el.offsetHeight - el.clientHeight;\n  documentObj.body.removeChild(el);\n\n  if (shouldCacheResult) {\n    horizontalScrollbarHeight_ = horizontalScrollbarHeight;\n  }\n  return horizontalScrollbarHeight;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTabAdapter {\n  /**\n   * Adds the given className to the root element.\n   * @param className The className to add\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes the given className from the root element.\n   * @param className The className to remove\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Returns whether the root element has the given className.\n   * @param className The className to remove\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Sets the given attrName of the root element to the given value.\n   * @param attr The attribute name to set\n   * @param value The value so give the attribute\n   */\n  setAttr(attr: string, value: string): void;\n\n  /**\n   * Activates the indicator element.\n   * @param previousIndicatorClientRect The client rect of the previously activated indicator\n   */\n  activateIndicator(previousIndicatorClientRect?: ClientRect): void;\n\n  /** Deactivates the indicator. */\n  deactivateIndicator(): void;\n\n  /**\n   * Emits the MDCTab:interacted event for use by parent components\n   */\n  notifyInteracted(): void;\n\n  /**\n   * Returns the offsetLeft value of the root element.\n   */\n  getOffsetLeft(): number;\n\n  /**\n   * Returns the offsetWidth value of the root element.\n   */\n  getOffsetWidth(): number;\n\n  /**\n   * Returns the offsetLeft of the content element.\n   */\n  getContentOffsetLeft(): number;\n\n  /**\n   * Returns the offsetWidth of the content element.\n   */\n  getContentOffsetWidth(): number;\n\n  /**\n   * Applies focus to the root element\n   */\n  focus(): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCRipple, MDCRippleFactory} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\nimport {MDCTabIndicator, MDCTabIndicatorFactory} from '@material/tab-indicator/component';\nimport {MDCTabAdapter} from './adapter';\nimport {MDCTabFoundation} from './foundation';\nimport {MDCTabDimensions, MDCTabInteractionEventDetail} from './types';\n\nexport type MDCTabFactory = (el: Element, foundation?: MDCTabFoundation) => MDCTab;\n\nexport class MDCTab extends MDCComponent<MDCTabFoundation> implements MDCRippleCapableSurface {\n  static attachTo(root: Element): MDCTab {\n    return new MDCTab(root);\n  }\n\n  id!: string; // assigned in initialize();\n\n  private ripple!: MDCRipple;              // assigned in initialize();\n  private tabIndicator!: MDCTabIndicator;  // assigned in initialize();\n  private content!: HTMLElement;           // assigned in initialize();\n  private handleClick!:\n      SpecificEventListener<'click'>;  // assigned in initialize();\n\n  initialize(\n      rippleFactory: MDCRippleFactory = (el, foundation) => new MDCRipple(el, foundation),\n      tabIndicatorFactory: MDCTabIndicatorFactory = (el) => new MDCTabIndicator(el),\n  ) {\n    this.id = this.root.id;\n    const rippleFoundation =\n        new MDCRippleFoundation(MDCRipple.createAdapter(this));\n    this.ripple = rippleFactory(this.root, rippleFoundation);\n\n    const tabIndicatorElement = this.root.querySelector(\n        MDCTabFoundation.strings.TAB_INDICATOR_SELECTOR)!;\n    this.tabIndicator = tabIndicatorFactory(tabIndicatorElement);\n    this.content = this.root.querySelector<HTMLElement>(\n        MDCTabFoundation.strings.CONTENT_SELECTOR)!;\n  }\n\n  initialSyncWithDOM() {\n    this.handleClick = () => {\n      this.foundation.handleClick();\n    };\n    this.listen('click', this.handleClick);\n  }\n\n  destroy() {\n    this.unlisten('click', this.handleClick);\n    this.ripple.destroy();\n    super.destroy();\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCTabAdapter = {\n      setAttr: (attr, value) => this.root.setAttribute(attr, value),\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      hasClass: (className) => this.root.classList.contains(className),\n      activateIndicator: (previousIndicatorClientRect) => {\n        this.tabIndicator.activate(previousIndicatorClientRect);\n      },\n      deactivateIndicator: () => {\n        this.tabIndicator.deactivate();\n      },\n      notifyInteracted: () => this.emit<MDCTabInteractionEventDetail>(\n          MDCTabFoundation.strings.INTERACTED_EVENT, {tabId: this.id},\n          true /* bubble */),\n      getOffsetLeft: () => (this.root as HTMLElement).offsetLeft,\n      getOffsetWidth: () => (this.root as HTMLElement).offsetWidth,\n      getContentOffsetLeft: () => this.content.offsetLeft,\n      getContentOffsetWidth: () => this.content.offsetWidth,\n      focus: () => (this.root as HTMLElement).focus(),\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCTabFoundation(adapter);\n  }\n\n  /**\n   * Getter for the active state of the tab\n   */\n  get active(): boolean {\n    return this.foundation.isActive();\n  }\n\n  set focusOnActivate(focusOnActivate: boolean) {\n    this.foundation.setFocusOnActivate(focusOnActivate);\n  }\n\n  /**\n   * Activates the tab\n   */\n  activate(computeIndicatorClientRect?: ClientRect) {\n    this.foundation.activate(computeIndicatorClientRect);\n  }\n\n  /**\n   * Deactivates the tab\n   */\n  deactivate() {\n    this.foundation.deactivate();\n  }\n\n  /**\n   * Returns the indicator's client rect\n   */\n  computeIndicatorClientRect(): ClientRect {\n    return this.tabIndicator.computeContentClientRect();\n  }\n\n  computeDimensions(): MDCTabDimensions {\n    return this.foundation.computeDimensions();\n  }\n\n  /**\n   * Focuses the tab\n   */\n  focus() {\n    (this.root as HTMLElement).focus();\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  ACTIVE: 'mdc-tab--active',\n};\n\nconst strings = {\n  ARIA_SELECTED: 'aria-selected',\n  CONTENT_SELECTOR: '.mdc-tab__content',\n  INTERACTED_EVENT: 'MDCTab:interacted',\n  RIPPLE_SELECTOR: '.mdc-tab__ripple',\n  TABINDEX: 'tabIndex',\n  TAB_INDICATOR_SELECTOR: '.mdc-tab-indicator',\n};\n\nexport {\n  cssClasses,\n  strings,\n};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCTabAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\nimport {MDCTabDimensions} from './types';\n\nexport class MDCTabFoundation extends MDCFoundation<MDCTabAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get defaultAdapter(): MDCTabAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => false,\n      setAttr: () => undefined,\n      activateIndicator: () => undefined,\n      deactivateIndicator: () => undefined,\n      notifyInteracted: () => undefined,\n      getOffsetLeft: () => 0,\n      getOffsetWidth: () => 0,\n      getContentOffsetLeft: () => 0,\n      getContentOffsetWidth: () => 0,\n      focus: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private focusOnActivate = true;\n\n  constructor(adapter?: Partial<MDCTabAdapter>) {\n    super({...MDCTabFoundation.defaultAdapter, ...adapter});\n  }\n\n  handleClick() {\n    // It's up to the parent component to keep track of the active Tab and\n    // ensure we don't activate a Tab that's already active.\n    this.adapter.notifyInteracted();\n  }\n\n  isActive(): boolean {\n    return this.adapter.hasClass(cssClasses.ACTIVE);\n  }\n\n  /**\n   * Sets whether the tab should focus itself when activated\n   */\n  setFocusOnActivate(focusOnActivate: boolean) {\n    this.focusOnActivate = focusOnActivate;\n  }\n\n  /**\n   * Activates the Tab\n   */\n  activate(previousIndicatorClientRect?: ClientRect) {\n    this.adapter.addClass(cssClasses.ACTIVE);\n    this.adapter.setAttr(strings.ARIA_SELECTED, 'true');\n    this.adapter.setAttr(strings.TABINDEX, '0');\n    this.adapter.activateIndicator(previousIndicatorClientRect);\n    if (this.focusOnActivate) {\n      this.adapter.focus();\n    }\n  }\n\n  /**\n   * Deactivates the Tab\n   */\n  deactivate() {\n    // Early exit\n    if (!this.isActive()) {\n      return;\n    }\n\n    this.adapter.removeClass(cssClasses.ACTIVE);\n    this.adapter.setAttr(strings.ARIA_SELECTED, 'false');\n    this.adapter.setAttr(strings.TABINDEX, '-1');\n    this.adapter.deactivateIndicator();\n  }\n\n  /**\n   * Returns the dimensions of the Tab\n   */\n  computeDimensions(): MDCTabDimensions {\n    const rootWidth = this.adapter.getOffsetWidth();\n    const rootLeft = this.adapter.getOffsetLeft();\n    const contentWidth = this.adapter.getContentOffsetWidth();\n    const contentLeft = this.adapter.getContentOffsetLeft();\n\n    return {\n      contentLeft: rootLeft + contentLeft,\n      contentRight: rootLeft + contentLeft + contentWidth,\n      rootLeft,\n      rootRight: rootLeft + rootWidth,\n    };\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTabFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * MDCTabDimensions provides details about the left and right edges of the Tab\n * root element and the Tab content element. These values are used to determine\n * the visual position of the Tab with respect it's parent container.\n */\nexport interface MDCTabDimensions {\n  rootLeft: number;\n  rootRight: number;\n  contentLeft: number;\n  contentRight: number;\n}\n\nexport interface MDCTabInteractionEventDetail {\n  tabId: string;\n}\n\n// Note: CustomEvent<T> is not supported by Closure Compiler.\n\nexport interface MDCTabInteractionEvent extends Event {\n  readonly detail: MDCTabInteractionEventDetail;\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\nimport {MDCTextFieldNativeInputElement} from './types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTextFieldAdapter extends MDCTextFieldRootAdapter,\n    MDCTextFieldInputAdapter,\n    MDCTextFieldLabelAdapter,\n    MDCTextFieldLineRippleAdapter,\n    MDCTextFieldOutlineAdapter {\n}\n\nexport interface MDCTextFieldRootAdapter {\n  /**\n   * Adds a class to the root Element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the root Element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * @return true if the root element contains the given class name.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Registers an event handler on the root element for a given event.\n   */\n  registerTextFieldInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event handler on the root element for a given event.\n   */\n  deregisterTextFieldInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Registers a validation attribute change listener on the input element.\n   * Handler accepts list of attribute names.\n   */\n  registerValidationAttributeChangeHandler(handler: (attributeNames: string[]) => void): MutationObserver;\n\n  /**\n   * Disconnects a validation attribute observer on the input element.\n   */\n  deregisterValidationAttributeChangeHandler(observer: MutationObserver): void;\n}\n\nexport interface MDCTextFieldInputAdapter {\n  /**\n   * @return The native `<input>` element, or an object with the same shape.\n   * Note that this method can return null, which the foundation will handle gracefully.\n   */\n  getNativeInput(): MDCTextFieldNativeInputElement | null;\n\n  /**\n   * Sets the specified attribute to the specified value on the input element.\n   */\n  setInputAttr(attr: string, value: string): void;\n\n  /**\n   * Removes the specified attribute from the input element.\n   */\n  removeInputAttr(attr: string): void;\n\n  /**\n   * @return true if the textfield is focused. We achieve this via `document.activeElement === this.root`.\n   */\n  isFocused(): boolean;\n\n  /**\n   * Registers an event listener on the native input element for a given event.\n   */\n  registerInputInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the native input element for a given event.\n   */\n  deregisterInputInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n}\n\nexport interface MDCTextFieldLabelAdapter {\n  /**\n   * Only implement if label exists.\n   * Shakes label if shouldShake is true.\n   */\n  shakeLabel(shouldShake: boolean): void;\n\n  /**\n   * Only implement if label exists.\n   * Floats the label above the input element if shouldFloat is true.\n   */\n  floatLabel(shouldFloat: boolean): void;\n\n  /**\n   * @return true if label element exists, false if it doesn't.\n   */\n  hasLabel(): boolean;\n\n  /**\n   * Only implement if label exists.\n   * @return width of label in pixels.\n   */\n  getLabelWidth(): number;\n\n  /**\n   * Only implement if label exists.\n   * Styles the label as required.\n   */\n  setLabelRequired(isRequired: boolean): void;\n}\n\nexport interface MDCTextFieldLineRippleAdapter {\n  /**\n   * Activates the line ripple.\n   */\n  activateLineRipple(): void;\n\n  /**\n   * Deactivates the line ripple.\n   */\n  deactivateLineRipple(): void;\n\n  /**\n   * Sets the transform origin of the line ripple.\n   */\n  setLineRippleTransformOrigin(normalizedX: number): void;\n}\n\nexport interface MDCTextFieldOutlineAdapter {\n  /**\n   * @return true if outline element exists, false if it doesn't.\n   */\n  hasOutline(): boolean;\n\n  /**\n   * Only implement if outline element exists.\n   */\n  notchOutline(labelWidth: number): void;\n\n  /**\n   * Only implement if outline element exists.\n   * Closes notch in outline element.\n   */\n  closeOutline(): void;\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTextFieldCharacterCounterAdapter {\n  /**\n   * Sets the text content of character counter element.\n   */\n  setContent(content: string): void;\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCTextFieldCharacterCounterAdapter} from './adapter';\nimport {MDCTextFieldCharacterCounterFoundation} from './foundation';\n\nexport type MDCTextFieldCharacterCounterFactory =\n    (el: Element, foundation?: MDCTextFieldCharacterCounterFoundation) => MDCTextFieldCharacterCounter;\n\nexport class MDCTextFieldCharacterCounter extends MDCComponent<MDCTextFieldCharacterCounterFoundation> {\n  static attachTo(root: Element): MDCTextFieldCharacterCounter {\n    return new MDCTextFieldCharacterCounter(root);\n  }\n\n  // Provided for access by MDCTextField component\n  get foundationForTextField(): MDCTextFieldCharacterCounterFoundation {\n    return this.foundation;\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    const adapter: MDCTextFieldCharacterCounterAdapter = {\n      setContent: (content) => {\n        this.root.textContent = content;\n      },\n    };\n    return new MDCTextFieldCharacterCounterFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  ROOT: 'mdc-text-field-character-counter',\n};\n\nconst strings = {\n  ROOT_SELECTOR: `.${cssClasses.ROOT}`,\n};\n\nexport {strings, cssClasses};\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCTextFieldCharacterCounterAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCTextFieldCharacterCounterFoundation extends MDCFoundation<MDCTextFieldCharacterCounterAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  /**\n   * See {@link MDCTextFieldCharacterCounterAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCTextFieldCharacterCounterAdapter {\n    return {\n      setContent: () => undefined,\n    };\n  }\n\n  constructor(adapter?: Partial<MDCTextFieldCharacterCounterAdapter>) {\n    super({...MDCTextFieldCharacterCounterFoundation.defaultAdapter, ...adapter});\n  }\n\n  setCounterValue(currentLength: number, maxLength: number) {\n    currentLength = Math.min(currentLength, maxLength);\n    this.adapter.setContent(`${currentLength} / ${maxLength}`);\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTextFieldCharacterCounterFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport {cssClasses as characterCountCssClasses, strings as characterCountStrings} from './constants';\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {applyPassive} from '@material/dom/events';\nimport * as ponyfill from '@material/dom/ponyfill';\nimport {MDCFloatingLabel, MDCFloatingLabelFactory} from '@material/floating-label/component';\nimport {MDCLineRipple, MDCLineRippleFactory} from '@material/line-ripple/component';\nimport {MDCNotchedOutline, MDCNotchedOutlineFactory} from '@material/notched-outline/component';\nimport {MDCRippleAdapter} from '@material/ripple/adapter';\nimport {MDCRipple, MDCRippleFactory} from '@material/ripple/component';\nimport {MDCRippleFoundation} from '@material/ripple/foundation';\nimport {MDCRippleCapableSurface} from '@material/ripple/types';\n\nimport {MDCTextFieldAdapter, MDCTextFieldInputAdapter, MDCTextFieldLabelAdapter, MDCTextFieldLineRippleAdapter, MDCTextFieldOutlineAdapter, MDCTextFieldRootAdapter} from './adapter';\nimport {MDCTextFieldCharacterCounter, MDCTextFieldCharacterCounterFactory} from './character-counter/component';\nimport {MDCTextFieldCharacterCounterFoundation} from './character-counter/foundation';\nimport {cssClasses, strings} from './constants';\nimport {MDCTextFieldFoundation} from './foundation';\nimport {MDCTextFieldHelperText, MDCTextFieldHelperTextFactory} from './helper-text/component';\nimport {MDCTextFieldHelperTextFoundation} from './helper-text/foundation';\nimport {MDCTextFieldIcon, MDCTextFieldIconFactory} from './icon/component';\nimport {MDCTextFieldFoundationMap} from './types';\n\nexport class MDCTextField extends MDCComponent<MDCTextFieldFoundation> implements MDCRippleCapableSurface {\n  static attachTo(root: Element): MDCTextField {\n    return new MDCTextField(root);\n  }\n\n  ripple!: MDCRipple | null; // assigned in initialize()\n\n  // The only required sub-element.\n  private input!: HTMLInputElement;  // assigned in initialize()\n\n  // Optional sub-elements.\n  private characterCounter!: MDCTextFieldCharacterCounter|\n      null;                                          // assigned in initialize()\n  private helperText!: MDCTextFieldHelperText|null;  // assigned in initialize()\n  private label!: MDCFloatingLabel|null;             // assigned in initialize()\n  private leadingIcon!: MDCTextFieldIcon|null;       // assigned in initialize()\n  private lineRipple!: MDCLineRipple|null;           // assigned in initialize()\n  private outline!: MDCNotchedOutline|null;          // assigned in initialize()\n  private trailingIcon!: MDCTextFieldIcon|null;      // assigned in initialize()\n  private prefix!: Element|null;                     // assigned in initialize()\n  private suffix!: Element|null;                     // assigned in initialize()\n\n  initialize(\n      rippleFactory: MDCRippleFactory = (el, foundation) => new MDCRipple(el, foundation),\n      lineRippleFactory: MDCLineRippleFactory = (el) => new MDCLineRipple(el),\n      helperTextFactory: MDCTextFieldHelperTextFactory = (el) => new MDCTextFieldHelperText(el),\n      characterCounterFactory: MDCTextFieldCharacterCounterFactory = (el) => new MDCTextFieldCharacterCounter(el),\n      iconFactory: MDCTextFieldIconFactory = (el) => new MDCTextFieldIcon(el),\n      labelFactory: MDCFloatingLabelFactory = (el) => new MDCFloatingLabel(el),\n      outlineFactory: MDCNotchedOutlineFactory = (el) => new MDCNotchedOutline(el),\n  ) {\n    this.input =\n        this.root.querySelector<HTMLInputElement>(strings.INPUT_SELECTOR)!;\n\n    const labelElement = this.root.querySelector(strings.LABEL_SELECTOR);\n    this.label = labelElement ? labelFactory(labelElement) : null;\n\n    const lineRippleElement = this.root.querySelector(strings.LINE_RIPPLE_SELECTOR);\n    this.lineRipple =\n        lineRippleElement ? lineRippleFactory(lineRippleElement) : null;\n\n    const outlineElement = this.root.querySelector(strings.OUTLINE_SELECTOR);\n    this.outline = outlineElement ? outlineFactory(outlineElement) : null;\n\n    // Helper text\n    const helperTextStrings = MDCTextFieldHelperTextFoundation.strings;\n    const nextElementSibling = this.root.nextElementSibling;\n    const hasHelperLine = (nextElementSibling && nextElementSibling.classList.contains(cssClasses.HELPER_LINE));\n    const helperTextEl =\n        hasHelperLine && nextElementSibling && nextElementSibling.querySelector(helperTextStrings.ROOT_SELECTOR);\n    this.helperText = helperTextEl ? helperTextFactory(helperTextEl) : null;\n\n    // Character counter\n    const characterCounterStrings = MDCTextFieldCharacterCounterFoundation.strings;\n    let characterCounterEl = this.root.querySelector(characterCounterStrings.ROOT_SELECTOR);\n    // If character counter is not found in root element search in sibling element.\n    if (!characterCounterEl && hasHelperLine && nextElementSibling) {\n      characterCounterEl = nextElementSibling.querySelector(characterCounterStrings.ROOT_SELECTOR);\n    }\n    this.characterCounter =\n        characterCounterEl ? characterCounterFactory(characterCounterEl) : null;\n\n    // Leading icon\n    const leadingIconEl =\n        this.root.querySelector(strings.LEADING_ICON_SELECTOR);\n    this.leadingIcon = leadingIconEl ? iconFactory(leadingIconEl) : null;\n\n    // Trailing icon\n    const trailingIconEl =\n        this.root.querySelector(strings.TRAILING_ICON_SELECTOR);\n    this.trailingIcon = trailingIconEl ? iconFactory(trailingIconEl) : null;\n\n    // Prefix and Suffix\n    this.prefix = this.root.querySelector(strings.PREFIX_SELECTOR);\n    this.suffix = this.root.querySelector(strings.SUFFIX_SELECTOR);\n\n    this.ripple = this.createRipple(rippleFactory);\n  }\n\n  destroy() {\n    if (this.ripple) {\n      this.ripple.destroy();\n    }\n    if (this.lineRipple) {\n      this.lineRipple.destroy();\n    }\n    if (this.helperText) {\n      this.helperText.destroy();\n    }\n    if (this.characterCounter) {\n      this.characterCounter.destroy();\n    }\n    if (this.leadingIcon) {\n      this.leadingIcon.destroy();\n    }\n    if (this.trailingIcon) {\n      this.trailingIcon.destroy();\n    }\n    if (this.label) {\n      this.label.destroy();\n    }\n    if (this.outline) {\n      this.outline.destroy();\n    }\n    super.destroy();\n  }\n\n  /**\n   * Initializes the Text Field's internal state based on the environment's\n   * state.\n   */\n  initialSyncWithDOM() {\n    this.disabled = this.input.disabled;\n  }\n\n  get value(): string {\n    return this.foundation.getValue();\n  }\n\n  /**\n   * @param value The value to set on the input.\n   */\n  set value(value: string) {\n    this.foundation.setValue(value);\n  }\n\n  get disabled(): boolean {\n    return this.foundation.isDisabled();\n  }\n\n  /**\n   * @param disabled Sets the Text Field disabled or enabled.\n   */\n  set disabled(disabled: boolean) {\n    this.foundation.setDisabled(disabled);\n  }\n\n  get valid(): boolean {\n    return this.foundation.isValid();\n  }\n\n  /**\n   * @param valid Sets the Text Field valid or invalid.\n   */\n  set valid(valid: boolean) {\n    this.foundation.setValid(valid);\n  }\n\n  get required(): boolean {\n    return this.input.required;\n  }\n\n  /**\n   * @param required Sets the Text Field to required.\n   */\n  set required(required: boolean) {\n    this.input.required = required;\n  }\n\n  get pattern(): string {\n    return this.input.pattern;\n  }\n\n  /**\n   * @param pattern Sets the input element's validation pattern.\n   */\n  set pattern(pattern: string) {\n    this.input.pattern = pattern;\n  }\n\n  get minLength(): number {\n    return this.input.minLength;\n  }\n\n  /**\n   * @param minLength Sets the input element's minLength.\n   */\n  set minLength(minLength: number) {\n    this.input.minLength = minLength;\n  }\n\n  get maxLength(): number {\n    return this.input.maxLength;\n  }\n\n  /**\n   * @param maxLength Sets the input element's maxLength.\n   */\n  set maxLength(maxLength: number) {\n    // Chrome throws exception if maxLength is set to a value less than zero\n    if (maxLength < 0) {\n      this.input.removeAttribute('maxLength');\n    } else {\n      this.input.maxLength = maxLength;\n    }\n  }\n\n  get min(): string {\n    return this.input.min;\n  }\n\n  /**\n   * @param min Sets the input element's min.\n   */\n  set min(min: string) {\n    this.input.min = min;\n  }\n\n  get max(): string {\n    return this.input.max;\n  }\n\n  /**\n   * @param max Sets the input element's max.\n   */\n  set max(max: string) {\n    this.input.max = max;\n  }\n\n  get step(): string {\n    return this.input.step;\n  }\n\n  /**\n   * @param step Sets the input element's step.\n   */\n  set step(step: string) {\n    this.input.step = step;\n  }\n\n  /**\n   * Sets the helper text element content.\n   */\n  set helperTextContent(content: string) {\n    this.foundation.setHelperTextContent(content);\n  }\n\n  /**\n   * Sets the aria label of the leading icon.\n   */\n  set leadingIconAriaLabel(label: string) {\n    this.foundation.setLeadingIconAriaLabel(label);\n  }\n\n  /**\n   * Sets the text content of the leading icon.\n   */\n  set leadingIconContent(content: string) {\n    this.foundation.setLeadingIconContent(content);\n  }\n\n  /**\n   * Sets the aria label of the trailing icon.\n   */\n  set trailingIconAriaLabel(label: string) {\n    this.foundation.setTrailingIconAriaLabel(label);\n  }\n\n  /**\n   * Sets the text content of the trailing icon.\n   */\n  set trailingIconContent(content: string) {\n    this.foundation.setTrailingIconContent(content);\n  }\n\n  /**\n   * Enables or disables the use of native validation. Use this for custom validation.\n   * @param useNativeValidation Set this to false to ignore native input validation.\n   */\n  set useNativeValidation(useNativeValidation: boolean) {\n    this.foundation.setUseNativeValidation(useNativeValidation);\n  }\n\n  /**\n   * Gets the text content of the prefix, or null if it does not exist.\n   */\n  get prefixText(): string|null {\n    return this.prefix ? this.prefix.textContent : null;\n  }\n\n  /**\n   * Sets the text content of the prefix, if it exists.\n   */\n  set prefixText(prefixText: string|null) {\n    if (this.prefix) {\n      this.prefix.textContent = prefixText;\n    }\n  }\n\n  /**\n   * Gets the text content of the suffix, or null if it does not exist.\n   */\n  get suffixText(): string|null {\n    return this.suffix ? this.suffix.textContent : null;\n  }\n\n  /**\n   * Sets the text content of the suffix, if it exists.\n   */\n  set suffixText(suffixText: string|null) {\n    if (this.suffix) {\n      this.suffix.textContent = suffixText;\n    }\n  }\n\n  /**\n   * Focuses the input element.\n   */\n  focus() {\n    this.input.focus();\n  }\n\n  /**\n   * Recomputes the outline SVG path for the outline element.\n   */\n  layout() {\n    const openNotch = this.foundation.shouldFloat;\n    this.foundation.notchOutline(openNotch);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCTextFieldAdapter = {\n      ...this.getRootAdapterMethods(),\n      ...this.getInputAdapterMethods(),\n      ...this.getLabelAdapterMethods(),\n      ...this.getLineRippleAdapterMethods(),\n      ...this.getOutlineAdapterMethods(),\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCTextFieldFoundation(adapter, this.getFoundationMap());\n  }\n\n  private getRootAdapterMethods(): MDCTextFieldRootAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      hasClass: (className) => this.root.classList.contains(className),\n      registerTextFieldInteractionHandler: (evtType, handler) => {\n        this.listen(evtType, handler);\n      },\n      deregisterTextFieldInteractionHandler: (evtType, handler) => {\n        this.unlisten(evtType, handler);\n      },\n      registerValidationAttributeChangeHandler: (handler) => {\n        const getAttributesList = (mutationsList: MutationRecord[]): string[] => {\n          return mutationsList\n              .map((mutation) => mutation.attributeName)\n              .filter((attributeName) => attributeName) as string[];\n        };\n        const observer = new MutationObserver((mutationsList) => handler(getAttributesList(mutationsList)));\n        const config = {attributes: true};\n        observer.observe(this.input, config);\n        return observer;\n      },\n      deregisterValidationAttributeChangeHandler: (observer) => {\n        observer.disconnect();\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private getInputAdapterMethods(): MDCTextFieldInputAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      getNativeInput: () => this.input,\n      setInputAttr: (attr, value) => {\n        this.input.setAttribute(attr, value);\n      },\n      removeInputAttr: (attr) => {\n        this.input.removeAttribute(attr);\n      },\n      isFocused: () => document.activeElement === this.input,\n      registerInputInteractionHandler: (evtType, handler) => {\n        this.input.addEventListener(evtType, handler, applyPassive());\n      },\n      deregisterInputInteractionHandler: (evtType, handler) => {\n        this.input.removeEventListener(evtType, handler, applyPassive());\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private getLabelAdapterMethods(): MDCTextFieldLabelAdapter {\n    return {\n      floatLabel: (shouldFloat) => {\n        this.label && this.label.float(shouldFloat);\n      },\n      getLabelWidth: () => this.label ? this.label.getWidth() : 0,\n      hasLabel: () => Boolean(this.label),\n      shakeLabel: (shouldShake) => {\n        this.label && this.label.shake(shouldShake);\n      },\n      setLabelRequired: (isRequired) => {\n        this.label && this.label.setRequired(isRequired);\n      },\n    };\n  }\n\n  private getLineRippleAdapterMethods(): MDCTextFieldLineRippleAdapter {\n    return {\n      activateLineRipple: () => {\n        if (this.lineRipple) {\n          this.lineRipple.activate();\n        }\n      },\n      deactivateLineRipple: () => {\n        if (this.lineRipple) {\n          this.lineRipple.deactivate();\n        }\n      },\n      setLineRippleTransformOrigin: (normalizedX) => {\n        if (this.lineRipple) {\n          this.lineRipple.setRippleCenter(normalizedX);\n        }\n      },\n    };\n  }\n\n  private getOutlineAdapterMethods(): MDCTextFieldOutlineAdapter {\n    return {\n      closeOutline: () => {\n        this.outline && this.outline.closeNotch();\n      },\n      hasOutline: () => Boolean(this.outline),\n      notchOutline: (labelWidth) => {\n        this.outline && this.outline.notch(labelWidth);\n      },\n    };\n  }\n\n  /**\n   * @return A map of all subcomponents to subfoundations.\n   */\n  private getFoundationMap(): Partial<MDCTextFieldFoundationMap> {\n    return {\n      characterCounter: this.characterCounter ?\n          this.characterCounter.foundationForTextField :\n          undefined,\n      helperText: this.helperText ? this.helperText.foundationForTextField :\n                                    undefined,\n      leadingIcon: this.leadingIcon ? this.leadingIcon.foundationForTextField :\n                                      undefined,\n      trailingIcon: this.trailingIcon ?\n          this.trailingIcon.foundationForTextField :\n          undefined,\n    };\n  }\n\n  private createRipple(rippleFactory: MDCRippleFactory): MDCRipple|null {\n    const isTextArea = this.root.classList.contains(cssClasses.TEXTAREA);\n    const isOutlined = this.root.classList.contains(cssClasses.OUTLINED);\n\n    if (isTextArea || isOutlined) {\n      return null;\n    }\n\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCRippleAdapter = {\n      ...MDCRipple.createAdapter(this),\n      isSurfaceActive: () => ponyfill.matches(this.input, ':active'),\n      registerInteractionHandler: (evtType, handler) => {\n        this.input.addEventListener(evtType, handler, applyPassive());\n      },\n      deregisterInteractionHandler: (evtType, handler) => {\n        this.input.removeEventListener(evtType, handler, applyPassive());\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n    return rippleFactory(this.root, new MDCRippleFoundation(adapter));\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst strings = {\n  ARIA_CONTROLS: 'aria-controls',\n  ARIA_DESCRIBEDBY: 'aria-describedby',\n  INPUT_SELECTOR: '.mdc-text-field__input',\n  LABEL_SELECTOR: '.mdc-floating-label',\n  LEADING_ICON_SELECTOR: '.mdc-text-field__icon--leading',\n  LINE_RIPPLE_SELECTOR: '.mdc-line-ripple',\n  OUTLINE_SELECTOR: '.mdc-notched-outline',\n  PREFIX_SELECTOR: '.mdc-text-field__affix--prefix',\n  SUFFIX_SELECTOR: '.mdc-text-field__affix--suffix',\n  TRAILING_ICON_SELECTOR: '.mdc-text-field__icon--trailing'\n};\n\nconst cssClasses = {\n  DISABLED: 'mdc-text-field--disabled',\n  FOCUSED: 'mdc-text-field--focused',\n  HELPER_LINE: 'mdc-text-field-helper-line',\n  INVALID: 'mdc-text-field--invalid',\n  LABEL_FLOATING: 'mdc-text-field--label-floating',\n  NO_LABEL: 'mdc-text-field--no-label',\n  OUTLINED: 'mdc-text-field--outlined',\n  ROOT: 'mdc-text-field',\n  TEXTAREA: 'mdc-text-field--textarea',\n  WITH_LEADING_ICON: 'mdc-text-field--with-leading-icon',\n  WITH_TRAILING_ICON: 'mdc-text-field--with-trailing-icon',\n};\n\nconst numbers = {\n  LABEL_SCALE: 0.75,\n};\n\n/**\n * Whitelist based off of https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/HTML5/Constraint_validation\n * under the \"Validation-related attributes\" section.\n */\nconst VALIDATION_ATTR_WHITELIST = [\n  'pattern', 'min', 'max', 'required', 'step', 'minlength', 'maxlength',\n];\n\n/**\n * Label should always float for these types as they show some UI even if value is empty.\n */\nconst ALWAYS_FLOAT_TYPES = [\n  'color', 'date', 'datetime-local', 'month', 'range', 'time', 'week',\n];\n\nexport {cssClasses, strings, numbers, VALIDATION_ATTR_WHITELIST, ALWAYS_FLOAT_TYPES};\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCTextFieldAdapter} from './adapter';\nimport {MDCTextFieldCharacterCounterFoundation} from './character-counter/foundation';\nimport {ALWAYS_FLOAT_TYPES, cssClasses, numbers, strings, VALIDATION_ATTR_WHITELIST} from './constants';\nimport {MDCTextFieldHelperTextFoundation} from './helper-text/foundation';\nimport {MDCTextFieldIconFoundation} from './icon/foundation';\nimport {MDCTextFieldFoundationMap, MDCTextFieldNativeInputElement} from './types';\n\ntype PointerDownEventType = 'mousedown'|'touchstart';\ntype InteractionEventType = 'click'|'keydown';\n\nconst POINTERDOWN_EVENTS: PointerDownEventType[] = ['mousedown', 'touchstart'];\nconst INTERACTION_EVENTS: InteractionEventType[] = ['click', 'keydown'];\n\nexport class MDCTextFieldFoundation extends MDCFoundation<MDCTextFieldAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  private get shouldAlwaysFloat(): boolean {\n    const type = this.getNativeInput().type;\n    return ALWAYS_FLOAT_TYPES.indexOf(type) >= 0;\n  }\n\n  get shouldFloat(): boolean {\n    return this.shouldAlwaysFloat || this.isFocused || !!this.getValue() ||\n        this.isBadInput();\n  }\n\n  get shouldShake(): boolean {\n    return !this.isFocused && !this.isValid() && !!this.getValue();\n  }\n\n  /**\n   * See {@link MDCTextFieldAdapter} for typing information on parameters and\n   * return types.\n   */\n  static get defaultAdapter(): MDCTextFieldAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => true,\n      setInputAttr: () => undefined,\n      removeInputAttr: () => undefined,\n      registerTextFieldInteractionHandler: () => undefined,\n      deregisterTextFieldInteractionHandler: () => undefined,\n      registerInputInteractionHandler: () => undefined,\n      deregisterInputInteractionHandler: () => undefined,\n      registerValidationAttributeChangeHandler: () =>\n          new MutationObserver(() => undefined),\n      deregisterValidationAttributeChangeHandler: () => undefined,\n      getNativeInput: () => null,\n      isFocused: () => false,\n      activateLineRipple: () => undefined,\n      deactivateLineRipple: () => undefined,\n      setLineRippleTransformOrigin: () => undefined,\n      shakeLabel: () => undefined,\n      floatLabel: () => undefined,\n      setLabelRequired: () => undefined,\n      hasLabel: () => false,\n      getLabelWidth: () => 0,\n      hasOutline: () => false,\n      notchOutline: () => undefined,\n      closeOutline: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private isFocused = false;\n  private receivedUserInput = false;\n  private valid = true;\n  private useNativeValidation = true;\n  private validateOnValueChange = true;\n\n  private readonly inputFocusHandler: () => void;\n  private readonly inputBlurHandler: SpecificEventListener<'blur'>;\n  private readonly inputInputHandler: SpecificEventListener<'input'>;\n  private readonly setPointerXOffset:\n      SpecificEventListener<PointerDownEventType>;\n  private readonly textFieldInteractionHandler:\n      SpecificEventListener<InteractionEventType>;\n  private readonly validationAttributeChangeHandler:\n      (attributesList: string[]) => void;\n  private validationObserver!: MutationObserver;  // assigned in init()\n\n  private readonly helperText?: MDCTextFieldHelperTextFoundation;\n  private readonly characterCounter?: MDCTextFieldCharacterCounterFoundation;\n  private readonly leadingIcon?: MDCTextFieldIconFoundation;\n  private readonly trailingIcon?: MDCTextFieldIconFoundation;\n\n  /**\n   * @param adapter\n   * @param foundationMap Map from subcomponent names to their subfoundations.\n   */\n  constructor(\n      adapter?: Partial<MDCTextFieldAdapter>,\n      foundationMap: Partial<MDCTextFieldFoundationMap> = {}) {\n    super({...MDCTextFieldFoundation.defaultAdapter, ...adapter});\n\n    this.helperText = foundationMap.helperText;\n    this.characterCounter = foundationMap.characterCounter;\n    this.leadingIcon = foundationMap.leadingIcon;\n    this.trailingIcon = foundationMap.trailingIcon;\n\n    this.inputFocusHandler = () => {\n      this.activateFocus();\n    };\n    this.inputBlurHandler = () => {\n      this.deactivateFocus();\n    };\n    this.inputInputHandler = () => {\n      this.handleInput();\n    };\n    this.setPointerXOffset = (evt) => {\n      this.setTransformOrigin(evt);\n    };\n    this.textFieldInteractionHandler = () => {\n      this.handleTextFieldInteraction();\n    };\n    this.validationAttributeChangeHandler = (attributesList) => {\n      this.handleValidationAttributeChange(attributesList);\n    };\n  }\n\n  init() {\n    if (this.adapter.hasLabel() && this.getNativeInput().required) {\n      this.adapter.setLabelRequired(true);\n    }\n\n    if (this.adapter.isFocused()) {\n      this.inputFocusHandler();\n    } else if (this.adapter.hasLabel() && this.shouldFloat) {\n      this.notchOutline(true);\n      this.adapter.floatLabel(true);\n      this.styleFloating(true);\n    }\n\n    this.adapter.registerInputInteractionHandler(\n        'focus', this.inputFocusHandler);\n    this.adapter.registerInputInteractionHandler('blur', this.inputBlurHandler);\n    this.adapter.registerInputInteractionHandler(\n        'input', this.inputInputHandler);\n    for (const evtType of POINTERDOWN_EVENTS) {\n      this.adapter.registerInputInteractionHandler(\n          evtType, this.setPointerXOffset);\n    }\n    for (const evtType of INTERACTION_EVENTS) {\n      this.adapter.registerTextFieldInteractionHandler(\n          evtType, this.textFieldInteractionHandler);\n    }\n    this.validationObserver =\n        this.adapter.registerValidationAttributeChangeHandler(\n            this.validationAttributeChangeHandler);\n    this.setcharacterCounter(this.getValue().length);\n  }\n\n  destroy() {\n    this.adapter.deregisterInputInteractionHandler(\n        'focus', this.inputFocusHandler);\n    this.adapter.deregisterInputInteractionHandler(\n        'blur', this.inputBlurHandler);\n    this.adapter.deregisterInputInteractionHandler(\n        'input', this.inputInputHandler);\n    for (const evtType of POINTERDOWN_EVENTS) {\n      this.adapter.deregisterInputInteractionHandler(\n          evtType, this.setPointerXOffset);\n    }\n    for (const evtType of INTERACTION_EVENTS) {\n      this.adapter.deregisterTextFieldInteractionHandler(\n          evtType, this.textFieldInteractionHandler);\n    }\n    this.adapter.deregisterValidationAttributeChangeHandler(\n        this.validationObserver);\n  }\n\n  /**\n   * Handles user interactions with the Text Field.\n   */\n  handleTextFieldInteraction() {\n    const nativeInput = this.adapter.getNativeInput();\n    if (nativeInput && nativeInput.disabled) {\n      return;\n    }\n    this.receivedUserInput = true;\n  }\n\n  /**\n   * Handles validation attribute changes\n   */\n  handleValidationAttributeChange(attributesList: string[]): void {\n    attributesList.some((attributeName) => {\n      if (VALIDATION_ATTR_WHITELIST.indexOf(attributeName) > -1) {\n        this.styleValidity(true);\n        this.adapter.setLabelRequired(this.getNativeInput().required);\n        return true;\n      }\n      return false;\n    });\n\n    if (attributesList.indexOf('maxlength') > -1) {\n      this.setcharacterCounter(this.getValue().length);\n    }\n  }\n\n  /**\n   * Opens/closes the notched outline.\n   */\n  notchOutline(openNotch: boolean) {\n    if (!this.adapter.hasOutline() || !this.adapter.hasLabel()) {\n      return;\n    }\n\n    if (openNotch) {\n      const labelWidth = this.adapter.getLabelWidth() * numbers.LABEL_SCALE;\n      this.adapter.notchOutline(labelWidth);\n    } else {\n      this.adapter.closeOutline();\n    }\n  }\n\n  /**\n   * Activates the text field focus state.\n   */\n  activateFocus() {\n    this.isFocused = true;\n    this.styleFocused(this.isFocused);\n    this.adapter.activateLineRipple();\n    if (this.adapter.hasLabel()) {\n      this.notchOutline(this.shouldFloat);\n      this.adapter.floatLabel(this.shouldFloat);\n      this.styleFloating(this.shouldFloat);\n      this.adapter.shakeLabel(this.shouldShake);\n    }\n    if (this.helperText &&\n        (this.helperText.isPersistent() || !this.helperText.isValidation() ||\n         !this.valid)) {\n      this.helperText.showToScreenReader();\n    }\n  }\n\n  /**\n   * Sets the line ripple's transform origin, so that the line ripple activate\n   * animation will animate out from the user's click location.\n   */\n  setTransformOrigin(evt: TouchEvent|MouseEvent): void {\n    if (this.isDisabled() || this.adapter.hasOutline()) {\n      return;\n    }\n\n    const touches = (evt as TouchEvent).touches;\n    const targetEvent = touches ? touches[0] : evt;\n    const targetClientRect =\n        (targetEvent.target as Element).getBoundingClientRect();\n    const normalizedX =\n        (targetEvent as MouseEvent).clientX - targetClientRect.left;\n    this.adapter.setLineRippleTransformOrigin(normalizedX);\n  }\n\n  /**\n   * Handles input change of text input and text area.\n   */\n  handleInput() {\n    this.autoCompleteFocus();\n    this.setcharacterCounter(this.getValue().length);\n  }\n\n  /**\n   * Activates the Text Field's focus state in cases when the input value\n   * changes without user input (e.g. programmatically).\n   */\n  autoCompleteFocus() {\n    if (!this.receivedUserInput) {\n      this.activateFocus();\n    }\n  }\n\n  /**\n   * Deactivates the Text Field's focus state.\n   */\n  deactivateFocus() {\n    this.isFocused = false;\n    this.adapter.deactivateLineRipple();\n    const isValid = this.isValid();\n    this.styleValidity(isValid);\n    this.styleFocused(this.isFocused);\n    if (this.adapter.hasLabel()) {\n      this.notchOutline(this.shouldFloat);\n      this.adapter.floatLabel(this.shouldFloat);\n      this.styleFloating(this.shouldFloat);\n      this.adapter.shakeLabel(this.shouldShake);\n    }\n    if (!this.shouldFloat) {\n      this.receivedUserInput = false;\n    }\n  }\n\n  getValue(): string {\n    return this.getNativeInput().value;\n  }\n\n  /**\n   * @param value The value to set on the input Element.\n   */\n  setValue(value: string): void {\n    // Prevent Safari from moving the caret to the end of the input when the\n    // value has not changed.\n    if (this.getValue() !== value) {\n      this.getNativeInput().value = value;\n    }\n    this.setcharacterCounter(value.length);\n    if (this.validateOnValueChange) {\n      const isValid = this.isValid();\n      this.styleValidity(isValid);\n    }\n    if (this.adapter.hasLabel()) {\n      this.notchOutline(this.shouldFloat);\n      this.adapter.floatLabel(this.shouldFloat);\n      this.styleFloating(this.shouldFloat);\n      if (this.validateOnValueChange) {\n        this.adapter.shakeLabel(this.shouldShake);\n      }\n    }\n  }\n\n  /**\n   * @return The custom validity state, if set; otherwise, the result of a\n   *     native validity check.\n   */\n  isValid(): boolean {\n    return this.useNativeValidation ? this.isNativeInputValid() : this.valid;\n  }\n\n  /**\n   * @param isValid Sets the custom validity state of the Text Field.\n   */\n  setValid(isValid: boolean): void {\n    this.valid = isValid;\n    this.styleValidity(isValid);\n\n    const shouldShake = !isValid && !this.isFocused && !!this.getValue();\n    if (this.adapter.hasLabel()) {\n      this.adapter.shakeLabel(shouldShake);\n    }\n  }\n\n  /**\n   * @param shouldValidate Whether or not validity should be updated on\n   *     value change.\n   */\n  setValidateOnValueChange(shouldValidate: boolean): void {\n    this.validateOnValueChange = shouldValidate;\n  }\n\n  /**\n   * @return Whether or not validity should be updated on value change. `true`\n   *     by default.\n   */\n  getValidateOnValueChange(): boolean {\n    return this.validateOnValueChange;\n  }\n\n  /**\n   * Enables or disables the use of native validation. Use this for custom\n   * validation.\n   * @param useNativeValidation Set this to false to ignore native input\n   *     validation.\n   */\n  setUseNativeValidation(useNativeValidation: boolean): void {\n    this.useNativeValidation = useNativeValidation;\n  }\n\n  isDisabled(): boolean {\n    return this.getNativeInput().disabled;\n  }\n\n  /**\n   * @param disabled Sets the text-field disabled or enabled.\n   */\n  setDisabled(disabled: boolean): void {\n    this.getNativeInput().disabled = disabled;\n    this.styleDisabled(disabled);\n  }\n\n  /**\n   * @param content Sets the content of the helper text.\n   */\n  setHelperTextContent(content: string): void {\n    if (this.helperText) {\n      this.helperText.setContent(content);\n    }\n  }\n\n  /**\n   * Sets the aria label of the leading icon.\n   */\n  setLeadingIconAriaLabel(label: string): void {\n    if (this.leadingIcon) {\n      this.leadingIcon.setAriaLabel(label);\n    }\n  }\n\n  /**\n   * Sets the text content of the leading icon.\n   */\n  setLeadingIconContent(content: string): void {\n    if (this.leadingIcon) {\n      this.leadingIcon.setContent(content);\n    }\n  }\n\n  /**\n   * Sets the aria label of the trailing icon.\n   */\n  setTrailingIconAriaLabel(label: string): void {\n    if (this.trailingIcon) {\n      this.trailingIcon.setAriaLabel(label);\n    }\n  }\n\n  /**\n   * Sets the text content of the trailing icon.\n   */\n  setTrailingIconContent(content: string): void {\n    if (this.trailingIcon) {\n      this.trailingIcon.setContent(content);\n    }\n  }\n\n  /**\n   * Sets character counter values that shows characters used and the total\n   * character limit.\n   */\n  private setcharacterCounter(currentLength: number): void {\n    if (!this.characterCounter) {\n      return;\n    }\n\n    const maxLength = this.getNativeInput().maxLength;\n    if (maxLength === -1) {\n      throw new Error(\n          'MDCTextFieldFoundation: Expected maxlength html property on text input or textarea.');\n    }\n\n    this.characterCounter.setCounterValue(currentLength, maxLength);\n  }\n\n  /**\n   * @return True if the Text Field input fails in converting the user-supplied\n   *     value.\n   */\n  private isBadInput(): boolean {\n    // The badInput property is not supported in IE 11 💩.\n    return this.getNativeInput().validity.badInput || false;\n  }\n\n  /**\n   * @return The result of native validity checking (ValidityState.valid).\n   */\n  private isNativeInputValid(): boolean {\n    return this.getNativeInput().validity.valid;\n  }\n\n  /**\n   * Styles the component based on the validity state.\n   */\n  private styleValidity(isValid: boolean): void {\n    const {INVALID} = MDCTextFieldFoundation.cssClasses;\n    if (isValid) {\n      this.adapter.removeClass(INVALID);\n    } else {\n      this.adapter.addClass(INVALID);\n    }\n    if (this.helperText) {\n      this.helperText.setValidity(isValid);\n\n      // We dynamically set or unset aria-describedby for validation helper text\n      // only, based on whether the field is valid\n      const helperTextValidation = this.helperText.isValidation();\n      if (!helperTextValidation) {\n        return;\n      }\n\n      const helperTextVisible = this.helperText.isVisible();\n      const helperTextId = this.helperText.getId();\n\n      if (helperTextVisible && helperTextId) {\n        this.adapter.setInputAttr(strings.ARIA_DESCRIBEDBY, helperTextId);\n      } else {\n        this.adapter.removeInputAttr(strings.ARIA_DESCRIBEDBY);\n      }\n    }\n  }\n\n  /**\n   * Styles the component based on the focused state.\n   */\n  private styleFocused(isFocused: boolean): void {\n    const {FOCUSED} = MDCTextFieldFoundation.cssClasses;\n    if (isFocused) {\n      this.adapter.addClass(FOCUSED);\n    } else {\n      this.adapter.removeClass(FOCUSED);\n    }\n  }\n\n  /**\n   * Styles the component based on the disabled state.\n   */\n  private styleDisabled(isDisabled: boolean): void {\n    const {DISABLED, INVALID} = MDCTextFieldFoundation.cssClasses;\n    if (isDisabled) {\n      this.adapter.addClass(DISABLED);\n      this.adapter.removeClass(INVALID);\n    } else {\n      this.adapter.removeClass(DISABLED);\n    }\n\n    if (this.leadingIcon) {\n      this.leadingIcon.setDisabled(isDisabled);\n    }\n\n    if (this.trailingIcon) {\n      this.trailingIcon.setDisabled(isDisabled);\n    }\n  }\n\n  /**\n   * Styles the component based on the label floating state.\n   */\n  private styleFloating(isFloating: boolean): void {\n    const {LABEL_FLOATING} = MDCTextFieldFoundation.cssClasses;\n    if (isFloating) {\n      this.adapter.addClass(LABEL_FLOATING);\n    } else {\n      this.adapter.removeClass(LABEL_FLOATING);\n    }\n  }\n\n  /**\n   * @return The native text input element from the host environment, or an\n   *     object with the same shape for unit tests.\n   */\n  private getNativeInput(): MDCTextFieldNativeInputElement {\n    // this.adapter may be undefined in foundation unit tests. This happens when\n    // testdouble is creating a mock object and invokes the\n    // shouldShake/shouldFloat getters (which in turn call getValue(), which\n    // calls this method) before init() has been called from the MDCTextField\n    // constructor. To work around that issue, we return a dummy object.\n    const nativeInput = this.adapter ? this.adapter.getNativeInput() : null;\n    return nativeInput || {\n      disabled: false,\n      maxLength: -1,\n      required: false,\n      type: 'input',\n      validity: {\n        badInput: false,\n        valid: true,\n      },\n      value: '',\n    };\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTextFieldFoundation;\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTextFieldHelperTextAdapter {\n  /**\n   * Adds a class to the helper text element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the helper text element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Returns whether or not the helper text element contains the given class.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * @return the specified attribute's value on the helper text element.\n   */\n  getAttr(attr: string): string|null;\n\n  /**\n   * Sets an attribute with a given value on the helper text element.\n   */\n  setAttr(attr: string, value: string): void;\n\n  /**\n   * Removes an attribute from the helper text element.\n   */\n  removeAttr(attr: string): void;\n\n  /**\n   * Sets the text content for the helper text element.\n   */\n  setContent(content: string): void;\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCTextFieldHelperTextAdapter} from './adapter';\nimport {MDCTextFieldHelperTextFoundation} from './foundation';\n\nexport type MDCTextFieldHelperTextFactory =\n    (el: Element, foundation?: MDCTextFieldHelperTextFoundation) => MDCTextFieldHelperText;\n\nexport class MDCTextFieldHelperText extends MDCComponent<MDCTextFieldHelperTextFoundation> {\n  static attachTo(root: Element): MDCTextFieldHelperText {\n    return new MDCTextFieldHelperText(root);\n  }\n\n  // Provided for access by MDCTextField component\n  get foundationForTextField(): MDCTextFieldHelperTextFoundation {\n    return this.foundation;\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCTextFieldHelperTextAdapter = {\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      hasClass: (className) => this.root.classList.contains(className),\n      getAttr: (attr) => this.root.getAttribute(attr),\n      setAttr: (attr, value) => this.root.setAttribute(attr, value),\n      removeAttr: (attr) => this.root.removeAttribute(attr),\n      setContent: (content) => {\n        this.root.textContent = content;\n      },\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCTextFieldHelperTextFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  HELPER_TEXT_PERSISTENT: 'mdc-text-field-helper-text--persistent',\n  HELPER_TEXT_VALIDATION_MSG: 'mdc-text-field-helper-text--validation-msg',\n  ROOT: 'mdc-text-field-helper-text',\n};\n\nconst strings = {\n  ARIA_HIDDEN: 'aria-hidden',\n  ROLE: 'role',\n  ROOT_SELECTOR: `.${cssClasses.ROOT}`,\n};\n\nexport {strings, cssClasses};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCTextFieldHelperTextAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\nexport class MDCTextFieldHelperTextFoundation extends MDCFoundation<MDCTextFieldHelperTextAdapter> {\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get strings() {\n    return strings;\n  }\n\n  /**\n   * See {@link MDCTextFieldHelperTextAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCTextFieldHelperTextAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => false,\n      getAttr: () => null,\n      setAttr: () => undefined,\n      removeAttr: () => undefined,\n      setContent: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  constructor(adapter?: Partial<MDCTextFieldHelperTextAdapter>) {\n    super({...MDCTextFieldHelperTextFoundation.defaultAdapter, ...adapter});\n  }\n\n\n  getId(): string|null {\n    return this.adapter.getAttr('id');\n  }\n\n  isVisible(): boolean {\n    return this.adapter.getAttr(strings.ARIA_HIDDEN) !== 'true';\n  }\n\n  /**\n   * Sets the content of the helper text field.\n   */\n  setContent(content: string) {\n    this.adapter.setContent(content);\n  }\n\n  isPersistent(): boolean {\n    return this.adapter.hasClass(cssClasses.HELPER_TEXT_PERSISTENT);\n  }\n\n  /**\n   * @param isPersistent Sets the persistency of the helper text.\n   */\n  setPersistent(isPersistent: boolean) {\n    if (isPersistent) {\n      this.adapter.addClass(cssClasses.HELPER_TEXT_PERSISTENT);\n    } else {\n      this.adapter.removeClass(cssClasses.HELPER_TEXT_PERSISTENT);\n    }\n  }\n\n  /**\n   * @return whether the helper text acts as an error validation message.\n   */\n  isValidation(): boolean {\n    return this.adapter.hasClass(cssClasses.HELPER_TEXT_VALIDATION_MSG);\n  }\n\n  /**\n   * @param isValidation True to make the helper text act as an error validation message.\n   */\n  setValidation(isValidation: boolean) {\n    if (isValidation) {\n      this.adapter.addClass(cssClasses.HELPER_TEXT_VALIDATION_MSG);\n    } else {\n      this.adapter.removeClass(cssClasses.HELPER_TEXT_VALIDATION_MSG);\n    }\n  }\n\n  /**\n   * Makes the helper text visible to the screen reader.\n   */\n  showToScreenReader() {\n    this.adapter.removeAttr(strings.ARIA_HIDDEN);\n  }\n\n  /**\n   * Sets the validity of the helper text based on the input validity.\n   */\n  setValidity(inputIsValid: boolean) {\n    const helperTextIsPersistent = this.adapter.hasClass(cssClasses.HELPER_TEXT_PERSISTENT);\n    const helperTextIsValidationMsg = this.adapter.hasClass(cssClasses.HELPER_TEXT_VALIDATION_MSG);\n    const validationMsgNeedsDisplay = helperTextIsValidationMsg && !inputIsValid;\n\n    if (validationMsgNeedsDisplay) {\n      this.showToScreenReader();\n      // If role is already alert, refresh it to trigger another announcement\n      // from screenreader.\n      if (this.adapter.getAttr(strings.ROLE) === 'alert') {\n        this.refreshAlertRole();\n      } else {\n        this.adapter.setAttr(strings.ROLE, 'alert');\n      }\n    } else {\n      this.adapter.removeAttr(strings.ROLE);\n    }\n\n    if (!helperTextIsPersistent && !validationMsgNeedsDisplay) {\n      this.hide();\n    }\n  }\n\n  /**\n   * Hides the help text from screen readers.\n   */\n  private hide() {\n    this.adapter.setAttr(strings.ARIA_HIDDEN, 'true');\n  }\n\n  private refreshAlertRole() {\n    this.adapter.removeAttr(strings.ROLE);\n    requestAnimationFrame(() => {\n      this.adapter.setAttr(strings.ROLE, 'alert');\n    });\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTextFieldHelperTextFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport {cssClasses as helperTextCssClasses, strings as helperTextStrings} from './constants';\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTextFieldIconAdapter {\n  /**\n   * Gets the value of an attribute on the icon element.\n   */\n  getAttr(attr: string): string | null;\n\n  /**\n   * Sets an attribute on the icon element.\n   */\n  setAttr(attr: string, value: string): void;\n\n  /**\n   * Removes an attribute from the icon element.\n   */\n  removeAttr(attr: string): void;\n\n  /**\n   * Sets the text content of the icon element.\n   */\n  setContent(content: string): void;\n\n  /**\n   * Registers an event listener on the icon element for a given event.\n   */\n  registerInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener on the icon element for a given event.\n   */\n  deregisterInteractionHandler<K extends EventType>(evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Emits a custom event \"MDCTextField:icon\" denoting a user has clicked the icon.\n   */\n  notifyIconAction(): void;\n}\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {MDCTextFieldIconAdapter} from './adapter';\nimport {MDCTextFieldIconFoundation} from './foundation';\n\nexport type MDCTextFieldIconFactory = (el: Element, foundation?: MDCTextFieldIconFoundation) => MDCTextFieldIcon;\n\nexport class MDCTextFieldIcon extends MDCComponent<MDCTextFieldIconFoundation> {\n  static attachTo(root: Element): MDCTextFieldIcon {\n    return new MDCTextFieldIcon(root);\n  }\n\n  // Provided for access by MDCTextField component\n  get foundationForTextField(): MDCTextFieldIconFoundation {\n    return this.foundation;\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCTextFieldIconAdapter = {\n      getAttr: (attr) => this.root.getAttribute(attr),\n      setAttr: (attr, value) => this.root.setAttribute(attr, value),\n      removeAttr: (attr) => this.root.removeAttribute(attr),\n      setContent: (content) => {\n        this.root.textContent = content;\n      },\n      registerInteractionHandler: (evtType, handler) => this.listen(evtType, handler),\n      deregisterInteractionHandler: (evtType, handler) => this.unlisten(evtType, handler),\n      notifyIconAction: () => this.emit(\n          MDCTextFieldIconFoundation.strings.ICON_EVENT, {} /* evtData */, true /* shouldBubble */),\n    };\n    // tslint:enable:object-literal-sort-keys\n    return new MDCTextFieldIconFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2016 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst strings = {\n  ICON_EVENT: 'MDCTextField:icon',\n  ICON_ROLE: 'button',\n};\n\nconst cssClasses = {\n  ROOT: 'mdc-text-field__icon',\n};\n\nexport {strings, cssClasses};\n","/**\n * @license\n * Copyright 2017 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCTextFieldIconAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\n\ntype InteractionEventType = 'click' | 'keydown';\n\nconst INTERACTION_EVENTS: InteractionEventType[] = ['click', 'keydown'];\n\nexport class MDCTextFieldIconFoundation extends MDCFoundation<MDCTextFieldIconAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  /**\n   * See {@link MDCTextFieldIconAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCTextFieldIconAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      getAttr: () => null,\n      setAttr: () => undefined,\n      removeAttr: () => undefined,\n      setContent: () => undefined,\n      registerInteractionHandler: () => undefined,\n      deregisterInteractionHandler: () => undefined,\n      notifyIconAction: () => undefined,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  private savedTabIndex: string|null = null;\n  private readonly interactionHandler:\n      SpecificEventListener<InteractionEventType>;\n\n  constructor(adapter?: Partial<MDCTextFieldIconAdapter>) {\n    super({...MDCTextFieldIconFoundation.defaultAdapter, ...adapter});\n\n    this.interactionHandler = (evt) => {\n      this.handleInteraction(evt);\n    };\n  }\n\n  init() {\n    this.savedTabIndex = this.adapter.getAttr('tabindex');\n\n    for (const evtType of INTERACTION_EVENTS) {\n      this.adapter.registerInteractionHandler(evtType, this.interactionHandler);\n    }\n  }\n\n  destroy() {\n    for (const evtType of INTERACTION_EVENTS) {\n      this.adapter.deregisterInteractionHandler(\n          evtType, this.interactionHandler);\n    }\n  }\n\n  setDisabled(disabled: boolean) {\n    if (!this.savedTabIndex) {\n      return;\n    }\n\n    if (disabled) {\n      this.adapter.setAttr('tabindex', '-1');\n      this.adapter.removeAttr('role');\n    } else {\n      this.adapter.setAttr('tabindex', this.savedTabIndex);\n      this.adapter.setAttr('role', strings.ICON_ROLE);\n    }\n  }\n\n  setAriaLabel(label: string) {\n    this.adapter.setAttr('aria-label', label);\n  }\n\n  setContent(content: string) {\n    this.adapter.setContent(content);\n  }\n\n  handleInteraction(evt: MouseEvent | KeyboardEvent) {\n    const isEnterKey = (evt as KeyboardEvent).key === 'Enter' || (evt as KeyboardEvent).keyCode === 13;\n    if (evt.type === 'click' || isEnterKey) {\n      evt.preventDefault();  // stop click from causing host label to focus\n                             // input\n      this.adapter.notifyIconAction();\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTextFieldIconFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport {cssClasses as iconCssClasses, strings as iconStrings} from './constants';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './types';\nexport * from './character-counter/index';\nexport * from './helper-text/index';\nexport * from './icon/index';\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTextFieldCharacterCounterFoundation} from './character-counter/foundation';\nimport {MDCTextFieldHelperTextFoundation} from './helper-text/foundation';\nimport {MDCTextFieldIconFoundation} from './icon/foundation';\n\nexport type MDCTextFieldNativeInputElement = Pick<HTMLInputElement, 'disabled' | 'maxLength' | 'type' | 'value' | 'required'> & {\n  validity: Pick<ValidityState, 'badInput' | 'valid'>;\n};\n\nexport interface MDCTextFieldFoundationMap {\n  helperText: MDCTextFieldHelperTextFoundation;\n  characterCounter: MDCTextFieldCharacterCounterFoundation;\n  leadingIcon: MDCTextFieldIconFoundation;\n  trailingIcon: MDCTextFieldIconFoundation;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {EventType, SpecificEventListener} from '@material/base/types';\nimport {CssClasses} from './constants';\n\n/**\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTooltipAdapter {\n  /**\n   * @return the attribute string if present on the root element, null\n   * otherwise.\n   */\n  getAttribute(attr: string): string|null;\n\n  /**\n   * Sets an attribute on the root element.\n   */\n  setAttribute(attr: string, value: string): void;\n\n  /**\n   * Adds a class onto the root element.\n   */\n  addClass(className: CssClasses): void;\n\n  /**\n   * @return whether or not the root element has the provided className.\n   */\n  hasClass(className: CssClasses): boolean;\n\n  /**\n   * Removes a class from the root element.\n   */\n  removeClass(className: CssClasses): void;\n\n  /**\n   * @return the value of the given computed style property on the root element.\n   */\n  getComputedStyleProperty(propertyName: string): string;\n\n  /**\n   * Sets the property value of the given style property on the root element.\n   */\n  setStyleProperty(propertyName: string, value: string): void;\n\n  /**\n   * Sets the property value of the given style property on the tooltip's\n   * surface-animation element (indicated by the\n   * \"mdc-tooltip__surface-animation\" class).\n   */\n  setSurfaceAnimationStyleProperty(propertyName: string, value: string): void;\n\n  /**\n   * @return the width of the viewport.\n   */\n  getViewportWidth(): number;\n\n  /**\n   * @return the height of the viewport.\n   */\n  getViewportHeight(): number;\n\n  /**\n   * @return the width and height of the tooltip element.\n   */\n  getTooltipSize(): {width: number, height: number};\n\n  /**\n   * @return the ClientRect for the anchor element.\n   */\n  getAnchorBoundingRect(): ClientRect|null;\n\n  /**\n   * @return the ClientRect for the parent of the tooltip element.\n   */\n  getParentBoundingRect(): ClientRect|null;\n\n  /**\n   * @return the attribute string if present on the anchor element, null\n   * otherwise.\n   */\n  getAnchorAttribute(attr: string): string|null;\n\n  /**\n   * Sets an attribute on the anchor element.\n   */\n  setAnchorAttribute(attr: string, value: string): void;\n\n  /**\n   * @return true if the text direction is right-to-left.\n   */\n  isRTL(): boolean;\n\n  /**\n   * Checks if element is contained within the anchor element.\n   */\n  anchorContainsElement(element: HTMLElement): boolean;\n\n  /**\n   * Checks if element is contained within the tooltip element.\n   */\n  tooltipContainsElement(element: HTMLElement): boolean;\n\n  /**\n   * Sets focus on the anchor element.\n   */\n  focusAnchorElement(): void;\n\n  /**\n   * Registers an event listener to the root element.\n   */\n  registerEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener to the root element.\n   */\n  deregisterEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Registers an event listener to the anchor element.\n   */\n  registerAnchorEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener to the anchor element.\n   */\n  deregisterAnchorEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Registers an event listener to the document body.\n   */\n  registerDocumentEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener to the document body.\n   */\n  deregisterDocumentEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Registers an event listener to the window.\n   */\n  registerWindowEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Deregisters an event listener to the window.\n   */\n  deregisterWindowEventHandler<K extends EventType>(\n      evtType: K, handler: SpecificEventListener<K>): void;\n\n  /**\n   * Notification that the tooltip element has been fully hidden. Typically used\n   * to wait for the hide animation to complete.\n   */\n  notifyHidden(): void;\n\n  /**\n   * @return the ClientRect for the caret element.\n   */\n  getTooltipCaretBoundingRect(): ClientRect|null;\n\n  /**\n   * Sets the property value of the given style property on both the caret-top\n   * and caret-bottom elements.\n   */\n  setTooltipCaretStyle(propertyName: string, value: string): void;\n\n  /**\n   * Clears all inline styles set on the caret-top and caret-bottom elements.\n   */\n  clearTooltipCaretStyles(): void;\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {EventType, SpecificEventListener} from '@material/base/types';\n\nimport {MDCTooltipAdapter} from './adapter';\nimport {AnchorBoundaryType, CssClasses, events, PositionWithCaret, XPosition, YPosition} from './constants';\nimport {MDCTooltipFoundation} from './foundation';\n\nexport class MDCTooltip extends MDCComponent<MDCTooltipFoundation> {\n  static attachTo(root: Element) {\n    return new MDCTooltip(root);\n  }\n\n  private anchorElem!: HTMLElement;       // assigned in initialize\n  private isTooltipRich!: boolean;        // assigned in initialSyncWithDOM\n  private isTooltipPersistent!: boolean;  // assigned in initialSyncWithDOM\n\n  private handleMouseEnter!: SpecificEventListener<'mouseenter'>;\n  private handleFocus!: SpecificEventListener<'focus'>;\n  private handleMouseLeave!: SpecificEventListener<'mouseleave'>;\n  private handleTransitionEnd!: SpecificEventListener<'transitionend'>;\n  private handleClick!: SpecificEventListener<'click'>;\n  private handleTouchstart!: SpecificEventListener<'touchstart'>;\n  private handleTouchend!: SpecificEventListener<'touchend'>;\n\n  initialize() {\n    const tooltipId = this.root.getAttribute('id');\n    if (!tooltipId) {\n      throw new Error('MDCTooltip: Tooltip component must have an id.');\n    }\n\n    const anchorElem = document.querySelector<HTMLElement>(\n                           `[data-tooltip-id=\"${tooltipId}\"]`) ||\n        document.querySelector<HTMLElement>(\n            `[aria-describedby=\"${tooltipId}\"]`);\n    if (!anchorElem) {\n      throw new Error(\n          'MDCTooltip: Tooltip component requires an anchor element annotated with [aria-describedby] or [data-tooltip-id].');\n    }\n    this.anchorElem = anchorElem;\n  }\n\n  initialSyncWithDOM() {\n    this.isTooltipRich = this.foundation.isRich();\n    this.isTooltipPersistent = this.foundation.isPersistent();\n\n    this.handleMouseEnter = () => {\n      this.foundation.handleAnchorMouseEnter();\n    };\n\n    this.handleFocus = (evt) => {\n      this.foundation.handleAnchorFocus(evt);\n    };\n\n    this.handleMouseLeave = () => {\n      this.foundation.handleAnchorMouseLeave();\n    };\n\n    this.handleTransitionEnd = () => {\n      this.foundation.handleTransitionEnd();\n    };\n\n    this.handleClick = () => {\n      this.foundation.handleAnchorClick();\n    };\n\n    this.handleTouchstart = () => {\n      this.foundation.handleAnchorTouchstart();\n    };\n\n    this.handleTouchend = () => {\n      this.foundation.handleAnchorTouchend();\n    };\n\n    if (this.isTooltipRich && this.isTooltipPersistent) {\n      this.anchorElem.addEventListener('click', this.handleClick);\n    } else {\n      this.anchorElem.addEventListener('mouseenter', this.handleMouseEnter);\n      // TODO(b/157075286): Listening for a 'focus' event is too broad.\n      this.anchorElem.addEventListener('focus', this.handleFocus);\n      this.anchorElem.addEventListener('mouseleave', this.handleMouseLeave);\n      this.anchorElem.addEventListener('touchstart', this.handleTouchstart);\n      this.anchorElem.addEventListener('touchend', this.handleTouchend);\n    }\n\n    this.listen('transitionend', this.handleTransitionEnd);\n  }\n\n  destroy() {\n    if (this.anchorElem) {\n      if (this.isTooltipRich && this.isTooltipPersistent) {\n        this.anchorElem.removeEventListener('click', this.handleClick);\n      } else {\n        this.anchorElem.removeEventListener(\n            'mouseenter', this.handleMouseEnter);\n        this.anchorElem.removeEventListener('focus', this.handleFocus);\n        this.anchorElem.removeEventListener(\n            'mouseleave', this.handleMouseLeave);\n        this.anchorElem.removeEventListener(\n            'touchstart', this.handleTouchstart);\n        this.anchorElem.removeEventListener('touchend', this.handleTouchend);\n      }\n    }\n\n    this.unlisten('transitionend', this.handleTransitionEnd);\n    super.destroy();\n  }\n\n  setTooltipPosition(position: {\n    xPos?: XPosition,\n    yPos?: YPosition,\n    withCaretPos?: PositionWithCaret\n  }) {\n    this.foundation.setTooltipPosition(position);\n  }\n\n  setAnchorBoundaryType(type: AnchorBoundaryType) {\n    this.foundation.setAnchorBoundaryType(type);\n  }\n\n  setShowDelay(delayMs: number) {\n    this.foundation.setShowDelay(delayMs);\n  }\n\n  setHideDelay(delayMs: number) {\n    this.foundation.setHideDelay(delayMs);\n  }\n\n  hide() {\n    this.foundation.hide();\n  }\n\n  isShown() {\n    return this.foundation.isShown();\n  }\n\n  /**\n   * Method that allows user to specify additional elements that should have a\n   * scroll event listener attached to it. This should be used in instances\n   * where the anchor element is placed inside a scrollable container (that is\n   * not the body element), and will ensure that the tooltip will stay attached\n   * to the anchor on scroll.\n   */\n  attachScrollHandler(\n      addEventListenerFn: <K extends EventType>(\n          event: K, handler: SpecificEventListener<K>) => void) {\n    this.foundation.attachScrollHandler(addEventListenerFn);\n  }\n\n  /**\n   * Must be used in conjunction with #attachScrollHandler. Removes the scroll\n   * event handler from elements on the page.\n   */\n  removeScrollHandler(\n      removeEventHandlerFn: <K extends EventType>(\n          event: K, handler: SpecificEventListener<K>) => void) {\n    this.foundation.removeScrollHandler(removeEventHandlerFn);\n  }\n\n  getDefaultFoundation() {\n    const adapter: MDCTooltipAdapter = {\n      getAttribute: (attr) => this.root.getAttribute(attr),\n      setAttribute: (attr, value) => {\n        this.root.setAttribute(attr, value);\n      },\n      addClass: (className) => {\n        this.root.classList.add(className);\n      },\n      hasClass: (className) => this.root.classList.contains(className),\n      removeClass: (className) => {\n        this.root.classList.remove(className);\n      },\n      getComputedStyleProperty: (propertyName) => {\n        return window.getComputedStyle(this.root).getPropertyValue(\n            propertyName);\n      },\n      setStyleProperty: (propertyName, value) => {\n        (this.root as HTMLElement).style.setProperty(propertyName, value);\n      },\n      setSurfaceAnimationStyleProperty: (propertyName, value) => {\n        const surface = this.root.querySelector<HTMLElement>(\n            `.${CssClasses.SURFACE_ANIMATION}`);\n        surface?.style.setProperty(propertyName, value);\n      },\n      getViewportWidth: () => window.innerWidth,\n      getViewportHeight: () => window.innerHeight,\n      getTooltipSize: () => {\n        return {\n          width: (this.root as HTMLElement).offsetWidth,\n          height: (this.root as HTMLElement).offsetHeight\n        };\n      },\n      getAnchorBoundingRect: () => {\n        return this.anchorElem ? this.anchorElem.getBoundingClientRect() : null;\n      },\n      getParentBoundingRect: () => {\n        return this.root.parentElement?.getBoundingClientRect() ?? null;\n      },\n      getAnchorAttribute: (attr) => {\n        return this.anchorElem ? this.anchorElem.getAttribute(attr) : null;\n      },\n      setAnchorAttribute: (attr, value) => {\n        this.anchorElem?.setAttribute(attr, value);\n      },\n      isRTL: () => getComputedStyle(this.root).direction === 'rtl',\n      anchorContainsElement: (element) => {\n        return !!this.anchorElem?.contains(element);\n      },\n      tooltipContainsElement: (element) => {\n        return this.root.contains(element);\n      },\n      focusAnchorElement: () => {\n        this.anchorElem?.focus();\n      },\n      registerEventHandler: (evt, handler) => {\n        if (this.root instanceof HTMLElement) {\n          this.root.addEventListener(evt, handler);\n        }\n      },\n      deregisterEventHandler: (evt, handler) => {\n        if (this.root instanceof HTMLElement) {\n          this.root.removeEventListener(evt, handler);\n        }\n      },\n      registerAnchorEventHandler: (evt, handler) => {\n        this.anchorElem?.addEventListener(evt, handler);\n      },\n      deregisterAnchorEventHandler: (evt, handler) => {\n        this.anchorElem?.removeEventListener(evt, handler);\n      },\n      registerDocumentEventHandler: (evt, handler) => {\n        document.body.addEventListener(evt, handler);\n      },\n      deregisterDocumentEventHandler: (evt, handler) => {\n        document.body.removeEventListener(evt, handler);\n      },\n      registerWindowEventHandler: (evt, handler) => {\n        window.addEventListener(evt, handler);\n      },\n      deregisterWindowEventHandler: (evt, handler) => {\n        window.removeEventListener(evt, handler);\n      },\n      notifyHidden: () => {\n        this.emit(events.HIDDEN, {});\n      },\n      getTooltipCaretBoundingRect: () => {\n        const caret = this.root.querySelector<HTMLElement>(\n            `.${CssClasses.TOOLTIP_CARET_TOP}`);\n        if (!caret) {\n          return null;\n        }\n        return caret.getBoundingClientRect();\n      },\n      setTooltipCaretStyle: (propertyName, value) => {\n        const topCaret = this.root.querySelector<HTMLElement>(\n            `.${CssClasses.TOOLTIP_CARET_TOP}`);\n        const bottomCaret = this.root.querySelector<HTMLElement>(\n            `.${CssClasses.TOOLTIP_CARET_BOTTOM}`);\n\n        if (!topCaret || !bottomCaret) {\n          return;\n        }\n\n        topCaret.style.setProperty(propertyName, value);\n        bottomCaret.style.setProperty(propertyName, value);\n      },\n      clearTooltipCaretStyles: () => {\n        const topCaret = this.root.querySelector<HTMLElement>(\n            `.${CssClasses.TOOLTIP_CARET_TOP}`);\n        const bottomCaret = this.root.querySelector<HTMLElement>(\n            `.${CssClasses.TOOLTIP_CARET_BOTTOM}`);\n\n        if (!topCaret || !bottomCaret) {\n          return;\n        }\n        topCaret.removeAttribute('style');\n        bottomCaret.removeAttribute('style');\n      },\n    };\n\n    //tslint:enable:object-literal-sort-keys\n    return new MDCTooltipFoundation(adapter);\n  }\n}\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nenum CssClasses {\n  RICH = 'mdc-tooltip--rich',\n  SHOWN = 'mdc-tooltip--shown',\n  SHOWING = 'mdc-tooltip--showing',\n  SHOWING_TRANSITION = 'mdc-tooltip--showing-transition',\n  HIDE = 'mdc-tooltip--hide',\n  HIDE_TRANSITION = 'mdc-tooltip--hide-transition',\n  MULTILINE_TOOLTIP = 'mdc-tooltip--multiline',\n  SURFACE = 'mdc-tooltip__surface',\n  SURFACE_ANIMATION = 'mdc-tooltip__surface-animation',\n  TOOLTIP_CARET_TOP = 'mdc-tooltip__caret-surface-top',\n  TOOLTIP_CARET_BOTTOM = 'mdc-tooltip__caret-surface-bottom',\n}\n\nconst numbers = {\n  BOUNDED_ANCHOR_GAP: 4,\n  UNBOUNDED_ANCHOR_GAP: 8,\n  MIN_VIEWPORT_TOOLTIP_THRESHOLD: 8,\n  HIDE_DELAY_MS: 600,\n  SHOW_DELAY_MS: 500,\n  // LINT.IfChange(tooltip-dimensions)\n  MIN_HEIGHT: 24,\n  MAX_WIDTH: 200,\n  // LINT.ThenChange(_tooltip.scss:tooltip-dimensions)\n  CARET_INDENTATION: 24,\n  // LINT.IfChange(tooltip-anim-scale)\n  ANIMATION_SCALE: 0.8,\n  // LINT.ThenChange(_tooltip.scss:tooltip-anim-scale)\n};\n\nconst attributes = {\n  ARIA_EXPANDED: 'aria-expanded',\n  ARIA_HASPOPUP: 'aria-haspopup',\n  PERSISTENT: 'data-mdc-tooltip-persistent',\n  SCROLLABLE_ANCESTOR: 'tooltip-scrollable-ancestor',\n  HAS_CARET: 'data-mdc-tooltip-has-caret',\n  HIDDEN_FROM_SCREENREADER: 'data-hide-tooltip-from-screenreader',\n};\n\nconst events = {\n  HIDDEN: 'MDCTooltip:hidden',\n};\n\n/** Enum for possible tooltip positioning relative to its anchor element. */\nenum XPosition {\n  DETECTED = 0,\n  START = 1,\n  // Note: CENTER is not valid for rich tooltips.\n  CENTER = 2,\n  END = 3,\n}\n\nenum YPosition {\n  DETECTED = 0,\n  ABOVE = 1,\n  BELOW = 2,\n}\n\n/**\n * Enum for possible anchor boundary types. This determines the gap between the\n * bottom of the anchor and the tooltip element.\n * Bounded anchors have an identifiable boundary (e.g. buttons).\n * Unbounded anchors don't have a visually declared boundary (e.g. plain text).\n */\nenum AnchorBoundaryType {\n  BOUNDED = 0,\n  UNBOUNDED = 1,\n}\n\nconst strings = {\n  LEFT: 'left',\n  RIGHT: 'right',\n  CENTER: 'center',\n  TOP: 'top',\n  BOTTOM: 'bottom'\n};\n\n/**\n * Enum for possible positions of a tooltip with caret (this specifies the\n * positioning of the tooltip relative to the anchor -- the position of the\n * caret will follow that of the tooltip). This can NOT be combined with the\n * above X/YPosition options. Naming for the enums follows: (vertical\n * placement)_(horizontal placement).\n */\nenum PositionWithCaret {\n  DETECTED = 0,\n\n  ABOVE_START = 1,\n  ABOVE_CENTER = 2,\n  ABOVE_END = 3,\n\n  TOP_SIDE_START = 4,\n  CENTER_SIDE_START = 5,\n  BOTTOM_SIDE_START = 6,\n\n  TOP_SIDE_END = 7,\n  CENTER_SIDE_END = 8,\n  BOTTOM_SIDE_END = 9,\n\n  BELOW_START = 10,\n  BELOW_CENTER = 11,\n  BELOW_END = 12,\n}\n\nenum YPositionWithCaret {\n  ABOVE = 1,\n  BELOW = 2,\n  SIDE_TOP = 3,\n  SIDE_CENTER = 4,\n  SIDE_BOTTOM = 5,\n}\n\nenum XPositionWithCaret {\n  START = 1,\n  CENTER = 2,\n  END = 3,\n  SIDE_START = 4,\n  SIDE_END = 5,\n}\n\nexport {\n  CssClasses,\n  numbers,\n  attributes,\n  events,\n  XPosition,\n  AnchorBoundaryType,\n  YPosition,\n  strings,\n  PositionWithCaret,\n  YPositionWithCaret,\n  XPositionWithCaret\n};\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {AnimationFrame} from '@material/animation/animationframe';\nimport {getCorrectPropertyName} from '@material/animation/util';\nimport {MDCFoundation} from '@material/base/foundation';\nimport {EventType, SpecificEventListener} from '@material/base/types';\nimport {KEY, normalizeKey} from '@material/dom/keyboard';\n\nimport {MDCTooltipAdapter} from './adapter';\nimport {AnchorBoundaryType, attributes, CssClasses, numbers, PositionWithCaret, strings, XPosition, XPositionWithCaret, YPosition, YPositionWithCaret} from './constants';\nimport {ShowTooltipOptions} from './types';\n\nconst {\n  RICH,\n  SHOWN,\n  SHOWING,\n  SHOWING_TRANSITION,\n  HIDE,\n  HIDE_TRANSITION,\n  MULTILINE_TOOLTIP\n} = CssClasses;\n\nenum AnimationKeys {\n  POLL_ANCHOR = 'poll_anchor'\n}\n\n// Accessing `window` without a `typeof` check will throw on Node environments.\nconst HAS_WINDOW = typeof window !== 'undefined';\n\nexport class MDCTooltipFoundation extends MDCFoundation<MDCTooltipAdapter> {\n  static get defaultAdapter(): MDCTooltipAdapter {\n    return {\n      getAttribute: () => null,\n      setAttribute: () => undefined,\n      addClass: () => undefined,\n      hasClass: () => false,\n      removeClass: () => undefined,\n      getComputedStyleProperty: () => '',\n      setStyleProperty: () => undefined,\n      setSurfaceAnimationStyleProperty: () => undefined,\n      getViewportWidth: () => 0,\n      getViewportHeight: () => 0,\n      getTooltipSize: () => ({width: 0, height: 0}),\n      getAnchorBoundingRect: () =>\n          ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      getParentBoundingRect: () =>\n          ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      getAnchorAttribute: () => null,\n      setAnchorAttribute: () => null,\n      isRTL: () => false,\n      anchorContainsElement: () => false,\n      tooltipContainsElement: () => false,\n      focusAnchorElement: () => undefined,\n      registerEventHandler: () => undefined,\n      deregisterEventHandler: () => undefined,\n      registerAnchorEventHandler: () => undefined,\n      deregisterAnchorEventHandler: () => undefined,\n      registerDocumentEventHandler: () => undefined,\n      deregisterDocumentEventHandler: () => undefined,\n      registerWindowEventHandler: () => undefined,\n      deregisterWindowEventHandler: () => undefined,\n      notifyHidden: () => undefined,\n      getTooltipCaretBoundingRect: () =>\n          ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0}),\n      setTooltipCaretStyle: () => undefined,\n      clearTooltipCaretStyles: () => undefined,\n    };\n  }\n\n  private interactiveTooltip!: boolean;  // assigned in init()\n  private richTooltip!: boolean;         // assigned in init()\n  private persistentTooltip!: boolean;   // assigned in init()\n  private hasCaret!: boolean;            // assigned in init()\n  private tooltipShown = false;\n  private anchorGap = numbers.BOUNDED_ANCHOR_GAP;\n  private xTooltipPos = XPosition.DETECTED;\n  private yTooltipPos = YPosition.DETECTED;\n  private tooltipPositionWithCaret = PositionWithCaret.DETECTED;\n  // Minimum threshold distance needed between the tooltip and the viewport.\n  private readonly minViewportTooltipThreshold =\n      numbers.MIN_VIEWPORT_TOOLTIP_THRESHOLD;\n  private hideDelayMs = numbers.HIDE_DELAY_MS;\n  private showDelayMs = numbers.SHOW_DELAY_MS;\n\n  private anchorRect: ClientRect|null = null;\n  private parentRect: ClientRect|null = null;\n  private frameId: number|null = null;\n  private hideTimeout: number|null = null;\n  private showTimeout: number|null = null;\n  private readonly animFrame: AnimationFrame;\n  private readonly anchorBlurHandler: SpecificEventListener<'blur'>;\n  private readonly documentClickHandler: SpecificEventListener<'click'>;\n  private readonly documentKeydownHandler: SpecificEventListener<'keydown'>;\n  private readonly tooltipMouseEnterHandler:\n      SpecificEventListener<'mouseenter'>;\n  private readonly tooltipMouseLeaveHandler:\n      SpecificEventListener<'mouseleave'>;\n  private readonly richTooltipFocusOutHandler:\n      SpecificEventListener<'focusout'>;\n  private readonly windowScrollHandler: SpecificEventListener<'scroll'>;\n  private readonly windowResizeHandler: SpecificEventListener<'resize'>;\n\n  private readonly addAncestorScrollEventListeners = new Array<() => void>();\n  private readonly removeAncestorScrollEventListeners = new Array<() => void>();\n\n  constructor(adapter?: Partial<MDCTooltipAdapter>) {\n    super({...MDCTooltipFoundation.defaultAdapter, ...adapter});\n    this.animFrame = new AnimationFrame();\n\n    this.anchorBlurHandler = (evt) => {\n      this.handleAnchorBlur(evt);\n    };\n\n    this.documentClickHandler = (evt) => {\n      this.handleDocumentClick(evt);\n    };\n\n    this.documentKeydownHandler = (evt) => {\n      this.handleKeydown(evt);\n    };\n\n    this.tooltipMouseEnterHandler = () => {\n      this.handleTooltipMouseEnter();\n    };\n\n    this.tooltipMouseLeaveHandler = () => {\n      this.handleTooltipMouseLeave();\n    };\n\n    this.richTooltipFocusOutHandler = (evt) => {\n      this.handleRichTooltipFocusOut(evt);\n    };\n\n    this.windowScrollHandler = () => {\n      this.handleWindowChangeEvent();\n    };\n\n    this.windowResizeHandler = () => {\n      this.handleWindowChangeEvent();\n    };\n  }\n\n  init() {\n    this.richTooltip = this.adapter.hasClass(RICH);\n    this.persistentTooltip =\n        this.adapter.getAttribute(attributes.PERSISTENT) === 'true';\n    this.interactiveTooltip =\n        !!this.adapter.getAnchorAttribute(attributes.ARIA_EXPANDED) &&\n        this.adapter.getAnchorAttribute(attributes.ARIA_HASPOPUP) === 'dialog';\n    this.hasCaret = this.richTooltip &&\n        this.adapter.getAttribute(attributes.HAS_CARET) === 'true';\n  }\n\n  isShown() {\n    return this.tooltipShown;\n  }\n\n  isRich() {\n    return this.richTooltip;\n  }\n\n  isPersistent() {\n    return this.persistentTooltip;\n  }\n\n  handleAnchorMouseEnter() {\n    if (this.tooltipShown) {\n      // Covers the instance where a user hovers over the anchor to reveal the\n      // tooltip, and then quickly navigates away and then back to the anchor.\n      // The tooltip should stay visible without animating out and then back in\n      // again.\n      this.show();\n    } else {\n      // clearHideTimeout here since handleAnchorMouseLeave sets a hideTimeout\n      // and that can execute before the showTimeout executes, resulting in hide\n      // being called and the showTimeout set below to be cleared.\n      this.clearHideTimeout();\n      this.showTimeout = setTimeout(() => {\n        this.show();\n      }, this.showDelayMs);\n    }\n  }\n\n  handleAnchorTouchstart() {\n    this.showTimeout = setTimeout(() => {\n      this.show();\n    }, this.showDelayMs);\n    // Prevent a context menu from appearing if user is long-pressing on a\n    // tooltip anchor.\n    this.adapter.registerWindowEventHandler(\n        'contextmenu', this.preventContextMenuOnLongTouch);\n  }\n\n  private preventContextMenuOnLongTouch(evt: MouseEvent) {\n    evt.preventDefault();\n  }\n\n  handleAnchorTouchend() {\n    this.clearShowTimeout();\n\n    // Only remove the 'contextmenu' listener if the tooltip is not shown. When\n    // the tooltip *is* shown, listener is removed in the close method.\n    if (!this.isShown()) {\n      this.adapter.deregisterWindowEventHandler(\n          'contextmenu', this.preventContextMenuOnLongTouch);\n    }\n  }\n\n  handleAnchorFocus(evt: FocusEvent) {\n    // TODO(b/157075286): Need to add some way to distinguish keyboard\n    // navigation focus events from other focus events, and only show the\n    // tooltip on the former of these events.\n    const {relatedTarget} = evt;\n    const tooltipContainsRelatedTarget = relatedTarget instanceof HTMLElement &&\n        this.adapter.tooltipContainsElement(relatedTarget);\n    // Do not show tooltip if the previous focus was on a tooltip element. This\n    // occurs when a rich tooltip is closed and focus is restored to the anchor\n    // or when user tab-navigates back into the anchor from the rich tooltip.\n    if (tooltipContainsRelatedTarget) {\n      return;\n    }\n    this.showTimeout = setTimeout(() => {\n      this.show();\n    }, this.showDelayMs);\n  }\n\n  handleAnchorMouseLeave() {\n    this.clearShowTimeout();\n    this.hideTimeout = setTimeout(() => {\n      this.hide();\n    }, this.hideDelayMs);\n  }\n\n  handleAnchorClick() {\n    if (this.tooltipShown) {\n      this.hide();\n    } else {\n      this.show();\n    }\n  }\n\n  handleDocumentClick(evt: MouseEvent) {\n    const anchorOrTooltipContainsTargetElement =\n        evt.target instanceof HTMLElement &&\n        (this.adapter.anchorContainsElement(evt.target) ||\n         this.adapter.tooltipContainsElement(evt.target));\n    // For persistent rich tooltips, we will not hide if:\n    // - The click target is within the anchor element. Otherwise, both\n    //   the anchor element's click handler and this handler will handle the\n    //   click (due to event propagation), resulting in a shown tooltip\n    //   being immediately hidden if the tooltip was initially hidden.\n    // - The click target is within the tooltip element, since clicks\n    //   on the tooltip do not close the tooltip.\n    if (this.richTooltip && this.persistentTooltip &&\n        anchorOrTooltipContainsTargetElement) {\n      return;\n    }\n    // Hide the tooltip immediately on click.\n    this.hide();\n  }\n\n  handleKeydown(evt: KeyboardEvent) {\n    // Hide the tooltip immediately on ESC key.\n    const key = normalizeKey(evt);\n    if (key === KEY.ESCAPE) {\n      const tooltipContainsActiveElement =\n          document.activeElement instanceof HTMLElement &&\n          this.adapter.tooltipContainsElement(document.activeElement);\n      if (tooltipContainsActiveElement) {\n        this.adapter.focusAnchorElement();\n      }\n      this.hide();\n    }\n  }\n\n  private handleAnchorBlur(evt: FocusEvent) {\n    if (this.richTooltip) {\n      const tooltipContainsRelatedTargetElement =\n          evt.relatedTarget instanceof HTMLElement &&\n          this.adapter.tooltipContainsElement(evt.relatedTarget);\n      // If focus changed to the tooltip element, don't hide the tooltip.\n      if (tooltipContainsRelatedTargetElement) {\n        return;\n      }\n    }\n    // Hide tooltip immediately on focus change.\n    this.hide();\n  }\n\n  private handleTooltipMouseEnter() {\n    this.show();\n  }\n\n  private handleTooltipMouseLeave() {\n    this.clearShowTimeout();\n    this.hideTimeout = setTimeout(() => {\n      this.hide();\n    }, this.hideDelayMs);\n  }\n\n  private handleRichTooltipFocusOut(evt: FocusEvent) {\n    const anchorOrTooltipContainsRelatedTargetElement =\n        evt.relatedTarget instanceof HTMLElement &&\n        (this.adapter.anchorContainsElement(evt.relatedTarget) ||\n         this.adapter.tooltipContainsElement(evt.relatedTarget));\n    // If the focus is still within the anchor or the tooltip, do not hide the\n    // tooltip.\n    if (anchorOrTooltipContainsRelatedTargetElement) {\n      return;\n    }\n    this.hide();\n  }\n\n  /**\n   * On window resize or scroll, check the anchor position and size and\n   * repostion tooltip if necessary.\n   */\n  private handleWindowChangeEvent() {\n    // Since scroll and resize events can fire at a high rate, we throttle\n    // the potential re-positioning of tooltip component using\n    // requestAnimationFrame.\n    this.animFrame.request(AnimationKeys.POLL_ANCHOR, () => {\n      this.repositionTooltipOnAnchorMove();\n    });\n  }\n\n  show() {\n    this.clearHideTimeout();\n    this.clearShowTimeout();\n\n    if (this.tooltipShown) {\n      return;\n    }\n\n    this.tooltipShown = true;\n    const showTooltipOptions = this.parseShowTooltipOptions();\n    if (!showTooltipOptions.hideFromScreenreader) {\n      this.adapter.setAttribute('aria-hidden', 'false');\n    }\n\n    if (this.richTooltip) {\n      if (this.interactiveTooltip) {\n        this.adapter.setAnchorAttribute('aria-expanded', 'true');\n      }\n      this.adapter.registerEventHandler(\n          'focusout', this.richTooltipFocusOutHandler);\n    }\n\n    if (!this.persistentTooltip) {\n      this.adapter.registerEventHandler(\n          'mouseenter', this.tooltipMouseEnterHandler);\n      this.adapter.registerEventHandler(\n          'mouseleave', this.tooltipMouseLeaveHandler);\n    }\n\n    this.adapter.removeClass(HIDE);\n    this.adapter.addClass(SHOWING);\n    if (this.isTooltipMultiline() && !this.richTooltip) {\n      this.adapter.addClass(MULTILINE_TOOLTIP);\n    }\n    this.anchorRect = this.adapter.getAnchorBoundingRect();\n    this.parentRect = this.adapter.getParentBoundingRect();\n    this.richTooltip ? this.positionRichTooltip() : this.positionPlainTooltip();\n\n    this.adapter.registerAnchorEventHandler('blur', this.anchorBlurHandler);\n    this.adapter.registerDocumentEventHandler(\n        'click', this.documentClickHandler);\n    this.adapter.registerDocumentEventHandler(\n        'keydown', this.documentKeydownHandler);\n\n    this.adapter.registerWindowEventHandler('scroll', this.windowScrollHandler);\n    this.adapter.registerWindowEventHandler('resize', this.windowResizeHandler);\n    // Register any additional scroll handlers\n    for (const fn of this.addAncestorScrollEventListeners) {\n      fn();\n    }\n\n    this.frameId = requestAnimationFrame(() => {\n      this.clearAllAnimationClasses();\n      this.adapter.addClass(SHOWN);\n      this.adapter.addClass(SHOWING_TRANSITION);\n    });\n  }\n\n  hide() {\n    this.clearHideTimeout();\n    this.clearShowTimeout();\n\n    if (!this.tooltipShown) {\n      return;\n    }\n\n    if (this.frameId) {\n      cancelAnimationFrame(this.frameId);\n    }\n\n    this.tooltipShown = false;\n    this.adapter.setAttribute('aria-hidden', 'true');\n    this.adapter.deregisterEventHandler(\n        'focusout', this.richTooltipFocusOutHandler);\n    if (this.richTooltip) {\n      if (this.interactiveTooltip) {\n        this.adapter.setAnchorAttribute('aria-expanded', 'false');\n      }\n    }\n\n    if (!this.persistentTooltip) {\n      this.adapter.deregisterEventHandler(\n          'mouseenter', this.tooltipMouseEnterHandler);\n      this.adapter.deregisterEventHandler(\n          'mouseleave', this.tooltipMouseLeaveHandler);\n    }\n\n    this.clearAllAnimationClasses();\n    this.adapter.addClass(HIDE);\n    this.adapter.addClass(HIDE_TRANSITION);\n    this.adapter.removeClass(SHOWN);\n\n    this.adapter.deregisterAnchorEventHandler('blur', this.anchorBlurHandler);\n    this.adapter.deregisterDocumentEventHandler(\n        'click', this.documentClickHandler);\n    this.adapter.deregisterDocumentEventHandler(\n        'keydown', this.documentKeydownHandler);\n    this.adapter.deregisterWindowEventHandler(\n        'scroll', this.windowScrollHandler);\n    this.adapter.deregisterWindowEventHandler(\n        'resize', this.windowResizeHandler);\n    this.adapter.deregisterWindowEventHandler(\n        'contextmenu', this.preventContextMenuOnLongTouch);\n\n    // Deregister any additional scroll handlers\n    for (const fn of this.removeAncestorScrollEventListeners) {\n      fn();\n    }\n  }\n\n  handleTransitionEnd() {\n    const isHidingTooltip = this.adapter.hasClass(HIDE);\n\n    this.adapter.removeClass(SHOWING);\n    this.adapter.removeClass(SHOWING_TRANSITION);\n    this.adapter.removeClass(HIDE);\n    this.adapter.removeClass(HIDE_TRANSITION);\n\n    // If handleTransitionEnd is called after hiding the tooltip, the tooltip\n    // will have the HIDE class (before calling the adapter removeClass method).\n    // If tooltip is now hidden, send a notification that the animation has\n    // completed and the tooltip is no longer visible.\n    if (isHidingTooltip) {\n      this.adapter.notifyHidden();\n    }\n  }\n\n  private clearAllAnimationClasses() {\n    this.adapter.removeClass(SHOWING_TRANSITION);\n    this.adapter.removeClass(HIDE_TRANSITION);\n  }\n\n  setTooltipPosition(position: {\n    xPos?: XPosition,\n    yPos?: YPosition,\n    withCaretPos?: PositionWithCaret\n  }) {\n    const {xPos, yPos, withCaretPos} = position;\n    if (this.hasCaret && withCaretPos) {\n      this.tooltipPositionWithCaret = withCaretPos;\n      return;\n    }\n\n    if (xPos) {\n      this.xTooltipPos = xPos;\n    }\n\n    if (yPos) {\n      this.yTooltipPos = yPos;\n    }\n  }\n\n  setAnchorBoundaryType(type: AnchorBoundaryType) {\n    if (type === AnchorBoundaryType.UNBOUNDED) {\n      this.anchorGap = numbers.UNBOUNDED_ANCHOR_GAP;\n    } else {\n      this.anchorGap = numbers.BOUNDED_ANCHOR_GAP;\n    }\n  }\n\n  setShowDelay(delayMs: number) {\n    this.showDelayMs = delayMs;\n  }\n\n  setHideDelay(delayMs: number) {\n    this.hideDelayMs = delayMs;\n  }\n\n  private parseShowTooltipOptions(): ShowTooltipOptions {\n    const hideFromScreenreader = Boolean(\n        this.adapter.getAnchorAttribute(attributes.HIDDEN_FROM_SCREENREADER));\n    return {hideFromScreenreader};\n  }\n\n  private isTooltipMultiline() {\n    const tooltipSize = this.adapter.getTooltipSize();\n    return tooltipSize.height > numbers.MIN_HEIGHT &&\n        tooltipSize.width >= numbers.MAX_WIDTH;\n  }\n\n  private positionPlainTooltip() {\n    // A plain tooltip has `fixed` positioning and is placed as an immediate\n    // child of the document body. Its positioning is calculated with respect to\n    // the viewport.\n    const {top, yTransformOrigin, left, xTransformOrigin} =\n        this.calculateTooltipStyles(this.anchorRect);\n\n    const transformProperty =\n        HAS_WINDOW ? getCorrectPropertyName(window, 'transform') : 'transform';\n    this.adapter.setSurfaceAnimationStyleProperty(\n        `${transformProperty}-origin`,\n        `${xTransformOrigin} ${yTransformOrigin}`);\n    this.adapter.setStyleProperty('top', `${top}px`);\n    this.adapter.setStyleProperty('left', `${left}px`);\n  }\n\n  private positionRichTooltip() {\n    // TODO(b/177686782): Remove width setting when max-content is used to style\n    // the rich tooltip.\n\n    // getComputedStyleProperty is used instead of getTooltipSize since\n    // getTooltipSize returns the offSetWidth, which includes the border and\n    // padding. What we need is the width of the tooltip without border and\n    // padding.\n    const width = this.adapter.getComputedStyleProperty('width');\n    // When rich tooltips are positioned within their parent containers, the\n    // tooltip width might be shrunk if it collides with the edge of the parent\n    // container. We set the width of the tooltip to prevent this.\n    this.adapter.setStyleProperty('width', width);\n\n    const {top, yTransformOrigin, left, xTransformOrigin} = this.hasCaret ?\n        this.calculateTooltipWithCaretStyles(this.anchorRect) :\n        this.calculateTooltipStyles(this.anchorRect);\n\n    const transformProperty =\n        HAS_WINDOW ? getCorrectPropertyName(window, 'transform') : 'transform';\n    this.adapter.setSurfaceAnimationStyleProperty(\n        `${transformProperty}-origin`,\n        `${xTransformOrigin} ${yTransformOrigin}`);\n    // A rich tooltip has `absolute` positioning and is placed as a sibling to\n    // the anchor element. Its positioning is calculated with respect to the\n    // parent element, and so the values need to be adjusted against the parent\n    // element.\n    const leftAdjustment = left - (this.parentRect?.left ?? 0);\n    const topAdjustment = top - (this.parentRect?.top ?? 0);\n    this.adapter.setStyleProperty('top', `${topAdjustment}px`);\n    this.adapter.setStyleProperty('left', `${leftAdjustment}px`);\n  }\n\n  /**\n   * Calculates the position of the tooltip. A tooltip will be placed beneath\n   * the anchor element and aligned either with the 'start'/'end' edge of the\n   * anchor element or the 'center'.\n   *\n   * Tooltip alignment is selected such that the tooltip maintains a threshold\n   * distance away from the viewport (defaulting to 'center' alignment). If the\n   * placement of the anchor prevents this threshold distance from being\n   * maintained, the tooltip is positioned so that it does not collide with the\n   * viewport.\n   *\n   * Users can specify an alignment, however, if this alignment results in the\n   * tooltip colliding with the viewport, this specification is overwritten.\n   */\n  private calculateTooltipStyles(anchorRect: ClientRect|null) {\n    if (!anchorRect) {\n      return {top: 0, left: 0};\n    }\n\n    const tooltipSize = this.adapter.getTooltipSize();\n    const top = this.calculateYTooltipDistance(anchorRect, tooltipSize.height);\n    const left = this.calculateXTooltipDistance(anchorRect, tooltipSize.width);\n\n    return {\n      top: top.distance,\n      yTransformOrigin: top.yTransformOrigin,\n      left: left.distance,\n      xTransformOrigin: left.xTransformOrigin\n    };\n  }\n\n  /**\n   * Calculates the `left` distance for the tooltip.\n   * Returns the distance value and a string indicating the x-axis transform-\n   * origin that should be used when animating the tooltip.\n   */\n  private calculateXTooltipDistance(\n      anchorRect: ClientRect,\n      tooltipWidth: number): ({distance: number, xTransformOrigin: string}) {\n    const isLTR = !this.adapter.isRTL();\n    let startPos, endPos, centerPos: number|undefined;\n    let startTransformOrigin, endTransformOrigin: string;\n    if (this.richTooltip) {\n      startPos = isLTR ? anchorRect.left - tooltipWidth : anchorRect.right;\n      endPos = isLTR ? anchorRect.right : anchorRect.left - tooltipWidth;\n\n      startTransformOrigin = isLTR ? strings.RIGHT : strings.LEFT;\n      endTransformOrigin = isLTR ? strings.LEFT : strings.RIGHT;\n    } else {\n      startPos = isLTR ? anchorRect.left : anchorRect.right - tooltipWidth;\n      endPos = isLTR ? anchorRect.right - tooltipWidth : anchorRect.left;\n      centerPos = anchorRect.left + (anchorRect.width - tooltipWidth) / 2;\n\n      startTransformOrigin = isLTR ? strings.LEFT : strings.RIGHT;\n      endTransformOrigin = isLTR ? strings.RIGHT : strings.LEFT;\n    }\n\n    const positionOptions = this.richTooltip ?\n        this.determineValidPositionOptions(startPos, endPos) :\n        // For plain tooltips, centerPos is defined\n        this.determineValidPositionOptions(centerPos!, startPos, endPos);\n\n    if (this.xTooltipPos === XPosition.START && positionOptions.has(startPos)) {\n      return {distance: startPos, xTransformOrigin: startTransformOrigin};\n    }\n    if (this.xTooltipPos === XPosition.END && positionOptions.has(endPos)) {\n      return {distance: endPos, xTransformOrigin: endTransformOrigin};\n    }\n    if (this.xTooltipPos === XPosition.CENTER &&\n        positionOptions.has(centerPos)) {\n      // This code path is only executed if calculating the distance for plain\n      // tooltips. In this instance, centerPos will always be defined, so we can\n      // safely assert that the returned value is non-null/undefined.\n      return {distance: centerPos!, xTransformOrigin: strings.CENTER};\n    }\n\n    // If no user position is supplied, rich tooltips default to end pos, then\n    // start position. Plain tooltips default to center, start, then end.\n    const possiblePositions = this.richTooltip ?\n        [\n          {distance: endPos, xTransformOrigin: endTransformOrigin},\n          {distance: startPos, xTransformOrigin: startTransformOrigin}\n        ] :\n        [\n          {distance: centerPos!, xTransformOrigin: strings.CENTER},\n          {distance: startPos, xTransformOrigin: startTransformOrigin},\n          {distance: endPos, xTransformOrigin: endTransformOrigin}\n        ];\n\n    const validPosition =\n        possiblePositions.find(({distance}) => positionOptions.has(distance));\n    if (validPosition) {\n      return validPosition;\n    }\n\n    // Indicates that all potential positions would result in the tooltip\n    // colliding with the viewport. This would only occur when the anchor\n    // element itself collides with the viewport, or the viewport is very\n    // narrow. In this case, we allow the tooltip to be mis-aligned from the\n    // anchor element.\n    if (anchorRect.left < 0) {\n      return {\n        distance: this.minViewportTooltipThreshold,\n        xTransformOrigin: strings.LEFT\n      };\n    } else {\n      const viewportWidth = this.adapter.getViewportWidth();\n      const distance =\n          viewportWidth - (tooltipWidth + this.minViewportTooltipThreshold);\n      return {distance, xTransformOrigin: strings.RIGHT};\n    }\n  }\n\n  /**\n   * Given the values for the horizontal alignments of the tooltip, calculates\n   * which of these options would result in the tooltip maintaining the required\n   * threshold distance vs which would result in the tooltip staying within the\n   * viewport.\n   *\n   * A Set of values is returned holding the distances that would honor the\n   * above requirements. Following the logic for determining the tooltip\n   * position, if all alignments violate the threshold, then the returned Set\n   * contains values that keep the tooltip within the viewport.\n   */\n  private determineValidPositionOptions(...positions: number[]) {\n    const posWithinThreshold = new Set();\n    const posWithinViewport = new Set();\n\n    for (const position of positions) {\n      if (this.positionHonorsViewportThreshold(position)) {\n        posWithinThreshold.add(position);\n      } else if (this.positionDoesntCollideWithViewport(position)) {\n        posWithinViewport.add(position);\n      }\n    }\n\n    return posWithinThreshold.size ? posWithinThreshold : posWithinViewport;\n  }\n\n  private positionHonorsViewportThreshold(leftPos: number) {\n    const viewportWidth = this.adapter.getViewportWidth();\n    const tooltipWidth = this.adapter.getTooltipSize().width;\n\n    return leftPos + tooltipWidth <=\n        viewportWidth - this.minViewportTooltipThreshold &&\n        leftPos >= this.minViewportTooltipThreshold;\n  }\n\n  private positionDoesntCollideWithViewport(leftPos: number) {\n    const viewportWidth = this.adapter.getViewportWidth();\n    const tooltipWidth = this.adapter.getTooltipSize().width;\n\n    return leftPos + tooltipWidth <= viewportWidth && leftPos >= 0;\n  }\n\n  /**\n   * Calculates the `top` distance for the tooltip.\n   * Returns the distance value and a string indicating the y-axis transform-\n   * origin that should be used when animating the tooltip.\n   */\n  private calculateYTooltipDistance(\n      anchorRect: ClientRect, tooltipHeight: number) {\n    const belowYPos = anchorRect.bottom + this.anchorGap;\n    const aboveYPos = anchorRect.top - (this.anchorGap + tooltipHeight);\n    const yPositionOptions =\n        this.determineValidYPositionOptions(aboveYPos, belowYPos);\n\n    if (this.yTooltipPos === YPosition.ABOVE &&\n        yPositionOptions.has(aboveYPos)) {\n      return {distance: aboveYPos, yTransformOrigin: strings.BOTTOM};\n    } else if (\n        this.yTooltipPos === YPosition.BELOW &&\n        yPositionOptions.has(belowYPos)) {\n      return {distance: belowYPos, yTransformOrigin: strings.TOP};\n    }\n\n    if (yPositionOptions.has(belowYPos)) {\n      return {distance: belowYPos, yTransformOrigin: strings.TOP};\n    }\n\n    if (yPositionOptions.has(aboveYPos)) {\n      return {distance: aboveYPos, yTransformOrigin: strings.BOTTOM};\n    }\n\n    // Indicates that all potential positions would result in the tooltip\n    // colliding with the viewport. This would only occur when the viewport is\n    // very short.\n    return {distance: belowYPos, yTransformOrigin: strings.TOP};\n  }\n\n  /**\n   * Given the values for above/below alignment of the tooltip, calculates\n   * which of these options would result in the tooltip maintaining the required\n   * threshold distance vs which would result in the tooltip staying within the\n   * viewport.\n   *\n   * A Set of values is returned holding the distances that would honor the\n   * above requirements. Following the logic for determining the tooltip\n   * position, if all possible alignments violate the threshold, then the\n   * returned Set contains values that keep the tooltip within the viewport.\n   */\n  private determineValidYPositionOptions(\n      aboveAnchorPos: number, belowAnchorPos: number) {\n    const posWithinThreshold = new Set();\n    const posWithinViewport = new Set();\n\n    if (this.yPositionHonorsViewportThreshold(aboveAnchorPos)) {\n      posWithinThreshold.add(aboveAnchorPos);\n    } else if (this.yPositionDoesntCollideWithViewport(aboveAnchorPos)) {\n      posWithinViewport.add(aboveAnchorPos);\n    }\n\n    if (this.yPositionHonorsViewportThreshold(belowAnchorPos)) {\n      posWithinThreshold.add(belowAnchorPos);\n    } else if (this.yPositionDoesntCollideWithViewport(belowAnchorPos)) {\n      posWithinViewport.add(belowAnchorPos);\n    }\n\n    return posWithinThreshold.size ? posWithinThreshold : posWithinViewport;\n  }\n\n  private yPositionHonorsViewportThreshold(yPos: number) {\n    const viewportHeight = this.adapter.getViewportHeight();\n    const tooltipHeight = this.adapter.getTooltipSize().height;\n\n    return yPos + tooltipHeight + this.minViewportTooltipThreshold <=\n        viewportHeight &&\n        yPos >= this.minViewportTooltipThreshold;\n  }\n\n  private yPositionDoesntCollideWithViewport(yPos: number) {\n    const viewportHeight = this.adapter.getViewportHeight();\n    const tooltipHeight = this.adapter.getTooltipSize().height;\n\n    return yPos + tooltipHeight <= viewportHeight && yPos >= 0;\n  }\n\n  private calculateTooltipWithCaretStyles(anchorRect: ClientRect|null) {\n    // Prior to grabbing the caret bounding rect, we clear all styles set on the\n    // caret. This will ensure the width/height is consistent (since we rotate\n    // the caret 90deg in some positions which would result in the height and\n    // width bounding rect measurements flipping).\n    this.adapter.clearTooltipCaretStyles();\n    const caretSize = this.adapter.getTooltipCaretBoundingRect();\n    if (!anchorRect || !caretSize) {\n      return {position: PositionWithCaret.DETECTED, top: 0, left: 0};\n    }\n\n    // The caret for the rich tooltip is created by rotating/skewing/scaling\n    // square div into a diamond shape and then hiding half of it so it looks\n    // like a triangle. We use the boundingClientRect to calculate the\n    // width/height of the element after the transforms (to the caret) have been\n    // applied. Since the full tooltip is scaled by 0.8 for the entrance\n    // animation, we divide by this value to retrieve the actual caret\n    // dimensions.\n    const caretWidth = caretSize.width / numbers.ANIMATION_SCALE;\n    // Since we hide half of caret, we divide the returned ClientRect height\n    // by 2.\n    const caretHeight = (caretSize.height / numbers.ANIMATION_SCALE) / 2;\n    const tooltipSize = this.adapter.getTooltipSize();\n\n    const yOptions = this.calculateYWithCaretDistanceOptions(\n        anchorRect, tooltipSize.height, {caretWidth, caretHeight});\n    const xOptions = this.calculateXWithCaretDistanceOptions(\n        anchorRect, tooltipSize.width, {caretWidth, caretHeight});\n\n    let positionOptions =\n        this.validateTooltipWithCaretDistances(yOptions, xOptions);\n    if (positionOptions.size < 1) {\n      positionOptions = this.generateBackupPositionOption(\n          anchorRect, tooltipSize, {caretWidth, caretHeight});\n    }\n\n    const {position, xDistance, yDistance} =\n        this.determineTooltipWithCaretDistance(positionOptions);\n\n    // After determining the position of the tooltip relative to the anchor,\n    // place the caret in the corresponding position and retrieve the necessary\n    // x/y transform origins needed to properly animate the tooltip entrance.\n    const {yTransformOrigin, xTransformOrigin} =\n        this.setCaretPositionStyles(position, {caretWidth, caretHeight});\n\n    return {\n      yTransformOrigin,\n      xTransformOrigin,\n      top: yDistance,\n      left: xDistance\n    };\n  }\n\n  private calculateXWithCaretDistanceOptions(\n      anchorRect: ClientRect, tooltipWidth: number,\n      caretSize: {caretHeight: number, caretWidth: number}):\n      Map<XPositionWithCaret, number> {\n    const {caretWidth, caretHeight} = caretSize;\n    const isLTR = !this.adapter.isRTL();\n    const anchorMidpoint = anchorRect.left + anchorRect.width / 2;\n\n    const sideLeftAligned =\n        anchorRect.left - (tooltipWidth + this.anchorGap + caretHeight);\n    const sideRightAligned = anchorRect.right + this.anchorGap + caretHeight;\n    const sideStartPos = isLTR ? sideLeftAligned : sideRightAligned;\n    const sideEndPos = isLTR ? sideRightAligned : sideLeftAligned;\n\n    const verticalLeftAligned =\n        anchorMidpoint - (numbers.CARET_INDENTATION + caretWidth / 2);\n    const verticalRightAligned = anchorMidpoint -\n        (tooltipWidth - numbers.CARET_INDENTATION - caretWidth / 2);\n    const verticalStartPos = isLTR ? verticalLeftAligned : verticalRightAligned;\n    const verticalEndPos = isLTR ? verticalRightAligned : verticalLeftAligned;\n    const verticalCenterPos = anchorMidpoint - tooltipWidth / 2;\n\n    const possiblePositionsMap = new Map([\n      [XPositionWithCaret.START, verticalStartPos],\n      [XPositionWithCaret.CENTER, verticalCenterPos],\n      [XPositionWithCaret.END, verticalEndPos],\n      [XPositionWithCaret.SIDE_END, sideEndPos],\n      [XPositionWithCaret.SIDE_START, sideStartPos],\n    ]);\n    return possiblePositionsMap;\n  }\n\n  private calculateYWithCaretDistanceOptions(\n      anchorRect: ClientRect, tooltipHeight: number,\n      caretSize: {caretHeight: number, caretWidth: number}):\n      Map<YPositionWithCaret, number> {\n    const {caretWidth, caretHeight} = caretSize;\n    const anchorMidpoint = anchorRect.top + anchorRect.height / 2;\n\n    const belowYPos = anchorRect.bottom + this.anchorGap + caretHeight;\n    const aboveYPos =\n        anchorRect.top - (this.anchorGap + tooltipHeight + caretHeight);\n    const sideTopYPos =\n        anchorMidpoint - (numbers.CARET_INDENTATION + caretWidth / 2);\n    const sideCenterYPos = anchorMidpoint - (tooltipHeight / 2);\n    const sideBottomYPos = anchorMidpoint -\n        (tooltipHeight - numbers.CARET_INDENTATION - caretWidth / 2);\n\n    const possiblePositionsMap = new Map([\n      [YPositionWithCaret.ABOVE, aboveYPos],\n      [YPositionWithCaret.BELOW, belowYPos],\n      [YPositionWithCaret.SIDE_TOP, sideTopYPos],\n      [YPositionWithCaret.SIDE_CENTER, sideCenterYPos],\n      [YPositionWithCaret.SIDE_BOTTOM, sideBottomYPos],\n    ]);\n\n    return possiblePositionsMap;\n  }\n\n  private repositionTooltipOnAnchorMove() {\n    const newAnchorRect = this.adapter.getAnchorBoundingRect();\n    if (!newAnchorRect || !this.anchorRect) return;\n\n    if (newAnchorRect.top !== this.anchorRect.top ||\n        newAnchorRect.left !== this.anchorRect.left ||\n        newAnchorRect.height !== this.anchorRect.height ||\n        newAnchorRect.width !== this.anchorRect.width) {\n      this.anchorRect = newAnchorRect;\n      this.parentRect = this.adapter.getParentBoundingRect();\n      this.richTooltip ? this.positionRichTooltip() :\n                         this.positionPlainTooltip();\n    }\n  }\n\n  /**\n   * Given a list of x/y position options for a rich tooltip with caret, checks\n   * if valid x/y combinations of these position options are either within the\n   * viewport threshold, or simply within the viewport. Returns a map with the\n   * valid x/y position combinations that all either honor the viewport\n   * threshold or are simply inside within the viewport.\n   */\n  private validateTooltipWithCaretDistances(\n      yOptions: Map<YPositionWithCaret, number>,\n      xOptions: Map<XPositionWithCaret, number>) {\n    const posWithinThreshold =\n        new Map<PositionWithCaret, {xDistance: number, yDistance: number}>();\n    const posWithinViewport =\n        new Map<PositionWithCaret, {xDistance: number, yDistance: number}>();\n\n    // If a tooltip has a caret, not all combinations of YPositionWithCarets and\n    // XPositionWithCarets are possible. Because of this we only check the\n    // validity of a given XPositionWithCaret if a potential corresponding\n    // YPositionWithCaret is valid.\n    const validMappings = new Map([\n      [\n        YPositionWithCaret.ABOVE,\n        [\n          XPositionWithCaret.START, XPositionWithCaret.CENTER,\n          XPositionWithCaret.END\n        ]\n      ],\n      [\n        YPositionWithCaret.BELOW,\n        [\n          XPositionWithCaret.START, XPositionWithCaret.CENTER,\n          XPositionWithCaret.END\n        ]\n      ],\n      [\n        YPositionWithCaret.SIDE_TOP,\n        [XPositionWithCaret.SIDE_START, XPositionWithCaret.SIDE_END]\n      ],\n      [\n        YPositionWithCaret.SIDE_CENTER,\n        [XPositionWithCaret.SIDE_START, XPositionWithCaret.SIDE_END]\n      ],\n      [\n        YPositionWithCaret.SIDE_BOTTOM,\n        [XPositionWithCaret.SIDE_START, XPositionWithCaret.SIDE_END]\n      ],\n    ]);\n\n    for (const y of validMappings.keys()) {\n      const yDistance = yOptions.get(y)!;\n      if (this.yPositionHonorsViewportThreshold(yDistance)) {\n        for (const x of validMappings.get(y)!) {\n          const xDistance = xOptions.get(x)!;\n          if (this.positionHonorsViewportThreshold(xDistance)) {\n            const caretPositionName = this.caretPositionOptionsMapping(x, y);\n            posWithinThreshold.set(caretPositionName, {xDistance, yDistance});\n          }\n        }\n      } else if (this.yPositionDoesntCollideWithViewport(yDistance)) {\n        for (const x of validMappings.get(y)!) {\n          const xDistance = xOptions.get(x)!;\n          if (this.positionDoesntCollideWithViewport(xDistance)) {\n            const caretPositionName = this.caretPositionOptionsMapping(x, y);\n            posWithinViewport.set(caretPositionName, {xDistance, yDistance});\n          }\n        }\n      }\n    }\n\n    return posWithinThreshold.size ? posWithinThreshold : posWithinViewport;\n  }\n\n  /**\n   * Method for generating a horizontal and vertical position for the tooltip if\n   * all other calculated values are considered invalid. This would only happen\n   * in situations of very small viewports/large tooltips.\n   */\n  private generateBackupPositionOption(\n      anchorRect: ClientRect, tooltipSize: {width: number, height: number},\n      caretSize: {caretHeight: number, caretWidth: number}) {\n    const isLTR = !this.adapter.isRTL();\n    let xDistance: number;\n    let xPos: XPositionWithCaret;\n    if (anchorRect.left < 0) {\n      xDistance = this.minViewportTooltipThreshold + caretSize.caretHeight;\n      xPos = isLTR ? XPositionWithCaret.END : XPositionWithCaret.START;\n    } else {\n      const viewportWidth = this.adapter.getViewportWidth();\n      xDistance = viewportWidth -\n          (tooltipSize.width + this.minViewportTooltipThreshold +\n           caretSize.caretHeight);\n      xPos = isLTR ? XPositionWithCaret.START : XPositionWithCaret.END;\n    }\n\n    let yDistance: number;\n    let yPos: YPositionWithCaret;\n    if (anchorRect.top < 0) {\n      yDistance = this.minViewportTooltipThreshold + caretSize.caretHeight;\n      yPos = YPositionWithCaret.BELOW;\n    } else {\n      const viewportHeight = this.adapter.getViewportHeight();\n      yDistance = viewportHeight -\n          (tooltipSize.height + this.minViewportTooltipThreshold +\n           caretSize.caretHeight);\n      yPos = YPositionWithCaret.ABOVE;\n    }\n\n    const caretPositionName = this.caretPositionOptionsMapping(xPos, yPos);\n    return new Map<PositionWithCaret, {xDistance: number, yDistance: number}>(\n        [[caretPositionName, {xDistance, yDistance}]]);\n  }\n\n  /**\n   * Given a list of valid position options for a rich tooltip with caret,\n   * returns the option that should be used.\n   */\n  private determineTooltipWithCaretDistance(\n      options: Map<PositionWithCaret, {xDistance: number, yDistance: number}>):\n      {position: PositionWithCaret, xDistance: number, yDistance: number} {\n    if (options.has(this.tooltipPositionWithCaret)) {\n      const tooltipPos = options.get(this.tooltipPositionWithCaret)!;\n      return {\n        position: this.tooltipPositionWithCaret,\n        xDistance: tooltipPos.xDistance,\n        yDistance: tooltipPos.yDistance,\n      };\n    }\n\n    const orderPref = [\n      PositionWithCaret.ABOVE_START, PositionWithCaret.ABOVE_CENTER,\n      PositionWithCaret.ABOVE_END, PositionWithCaret.TOP_SIDE_START,\n      PositionWithCaret.CENTER_SIDE_START, PositionWithCaret.BOTTOM_SIDE_START,\n      PositionWithCaret.TOP_SIDE_END, PositionWithCaret.CENTER_SIDE_END,\n      PositionWithCaret.BOTTOM_SIDE_END, PositionWithCaret.BELOW_START,\n      PositionWithCaret.BELOW_CENTER, PositionWithCaret.BELOW_END\n    ];\n\n    // Before calling this method we check whether or not the \"options\" param\n    // is empty and invoke a different method. We, therefore, can be certain\n    // that \"validPosition\" will always be defined.\n    const validPosition = orderPref.find((pos) => options.has(pos))!;\n    const pos = options.get(validPosition)!;\n    return {\n      position: validPosition,\n      xDistance: pos.xDistance,\n      yDistance: pos.yDistance,\n    };\n  }\n\n  /**\n   * Returns the corresponding PositionWithCaret enum for the proivded\n   * XPositionWithCaret and YPositionWithCaret enums. This mapping exists so our\n   * public API accepts only PositionWithCaret enums (as all combinations of\n   * XPositionWithCaret and YPositionWithCaret are not valid), but internally we\n   * can calculate the X and Y positions of a rich tooltip with caret\n   * separately.\n   */\n  private caretPositionOptionsMapping(\n      xPos: XPositionWithCaret, yPos: YPositionWithCaret): PositionWithCaret {\n    switch (yPos) {\n      case YPositionWithCaret.ABOVE:\n        if (xPos === XPositionWithCaret.START) {\n          return PositionWithCaret.ABOVE_START;\n        } else if (xPos === XPositionWithCaret.CENTER) {\n          return PositionWithCaret.ABOVE_CENTER;\n        } else if (xPos === XPositionWithCaret.END) {\n          return PositionWithCaret.ABOVE_END;\n        }\n        break;\n      case YPositionWithCaret.BELOW:\n        if (xPos === XPositionWithCaret.START) {\n          return PositionWithCaret.BELOW_START;\n        } else if (xPos === XPositionWithCaret.CENTER) {\n          return PositionWithCaret.BELOW_CENTER;\n        } else if (xPos === XPositionWithCaret.END) {\n          return PositionWithCaret.BELOW_END;\n        }\n        break;\n      case YPositionWithCaret.SIDE_TOP:\n        if (xPos === XPositionWithCaret.SIDE_START) {\n          return PositionWithCaret.TOP_SIDE_START;\n        } else if (xPos === XPositionWithCaret.SIDE_END) {\n          return PositionWithCaret.TOP_SIDE_END;\n        }\n        break;\n      case YPositionWithCaret.SIDE_CENTER:\n        if (xPos === XPositionWithCaret.SIDE_START) {\n          return PositionWithCaret.CENTER_SIDE_START;\n        } else if (xPos === XPositionWithCaret.SIDE_END) {\n          return PositionWithCaret.CENTER_SIDE_END;\n        }\n        break;\n      case YPositionWithCaret.SIDE_BOTTOM:\n        if (xPos === XPositionWithCaret.SIDE_START) {\n          return PositionWithCaret.BOTTOM_SIDE_START;\n        } else if (xPos === XPositionWithCaret.SIDE_END) {\n          return PositionWithCaret.BOTTOM_SIDE_END;\n        }\n        break;\n      default:\n        break;\n    }\n    throw new Error(\n        `MDCTooltipFoundation: Invalid caret position of ${xPos}, ${yPos}`);\n  }\n\n  /**\n   * Given a PositionWithCaret, applies the correct styles to the caret element\n   * so that it is positioned properly on the rich tooltip.\n   * Returns the x and y positions of the caret, to be used as the\n   * transform-origin on the tooltip itself for entrance animations.\n   */\n  private setCaretPositionStyles(position: PositionWithCaret, caretSize: {\n    caretWidth: number,\n    caretHeight: number\n  }) {\n    const values = this.calculateCaretPositionOnTooltip(position, caretSize);\n    if (!values) {\n      return {yTransformOrigin: 0, xTransformOrigin: 0};\n    }\n    // Prior to setting the caret position styles, clear any previous styles\n    // set. This is necessary as all position options do not use the same\n    // properties (e.g. using 'left' or 'right') and so old style properties\n    // might not get overridden, causing misplaced carets.\n    this.adapter.clearTooltipCaretStyles();\n\n    this.adapter.setTooltipCaretStyle(values.yAlignment, values.yAxisPx);\n    this.adapter.setTooltipCaretStyle(values.xAlignment, values.xAxisPx);\n    // Value of scaleX is cos(skew), Math.cos() expects radians though, so we\n    // must first convert the skew value (which is in degrees) to radians.\n    const skewRadians = values.skew * (Math.PI / 180);\n    const scaleX = Math.cos(skewRadians);\n\n    this.adapter.setTooltipCaretStyle(\n        'transform',\n        `rotate(${values.rotation}deg) skewY(${values.skew}deg) scaleX(${\n            scaleX})`);\n    this.adapter.setTooltipCaretStyle(\n        'transform-origin', `${values.xAlignment} ${values.yAlignment}`);\n    return {\n      yTransformOrigin: values.yTransformOrigin,\n      xTransformOrigin: values.xTransformOrigin\n    };\n  }\n\n  /**\n   * Given a PositionWithCaret, determines the correct styles to position the\n   * caret properly on the rich tooltip.\n   */\n  private calculateCaretPositionOnTooltip(\n      tooltipPos: PositionWithCaret,\n      caretSize: {caretWidth: number, caretHeight: number}) {\n    const isLTR = !this.adapter.isRTL();\n    const tooltipWidth = this.adapter.getComputedStyleProperty('width');\n    const tooltipHeight = this.adapter.getComputedStyleProperty('height');\n    if (!tooltipWidth || !tooltipHeight || !caretSize) {\n      return;\n    }\n\n    const midpointWidth =\n        `calc((${tooltipWidth} - ${caretSize.caretWidth}px) / 2)`;\n    const midpointHeight =\n        `calc((${tooltipHeight} - ${caretSize.caretWidth}px) / 2)`;\n    const flushWithEdge = '0';\n    const indentedFromEdge = `${numbers.CARET_INDENTATION}px`;\n    const indentedFromWidth = `calc(${tooltipWidth} - ${indentedFromEdge})`;\n    const indentedFromHeight = `calc(${tooltipHeight} - ${indentedFromEdge})`;\n    const verticalRotation = 35;\n    const horizontalRotation = Math.abs(90 - verticalRotation);\n    const skewDeg = 20;\n\n    switch (tooltipPos) {\n      case PositionWithCaret.BELOW_CENTER:\n        return {\n          yAlignment: strings.TOP,\n          xAlignment: strings.LEFT,\n          yAxisPx: flushWithEdge,\n          xAxisPx: midpointWidth,\n          rotation: -1 * verticalRotation,\n          skew: -1 * skewDeg,\n          xTransformOrigin: midpointWidth,\n          yTransformOrigin: flushWithEdge,\n        };\n      case PositionWithCaret.BELOW_END:\n        return {\n          yAlignment: strings.TOP,\n          xAlignment: isLTR ? strings.RIGHT : strings.LEFT,\n          yAxisPx: flushWithEdge,\n          xAxisPx: indentedFromEdge,\n          rotation: isLTR ? verticalRotation : -1 * verticalRotation,\n          skew: isLTR ? skewDeg : -1 * skewDeg,\n          xTransformOrigin: isLTR ? indentedFromWidth : indentedFromEdge,\n          yTransformOrigin: flushWithEdge,\n        };\n      case PositionWithCaret.BELOW_START:\n        return {\n          yAlignment: strings.TOP,\n          xAlignment: isLTR ? strings.LEFT : strings.RIGHT,\n          yAxisPx: flushWithEdge,\n          xAxisPx: indentedFromEdge,\n          rotation: isLTR ? -1 * verticalRotation : verticalRotation,\n          skew: isLTR ? -1 * skewDeg : skewDeg,\n          xTransformOrigin: isLTR ? indentedFromEdge : indentedFromWidth,\n          yTransformOrigin: flushWithEdge,\n        };\n\n      case PositionWithCaret.TOP_SIDE_END:\n        return {\n          yAlignment: strings.TOP,\n          xAlignment: isLTR ? strings.LEFT : strings.RIGHT,\n          yAxisPx: indentedFromEdge,\n          xAxisPx: flushWithEdge,\n          rotation: isLTR ? horizontalRotation : -1 * horizontalRotation,\n          skew: isLTR ? -1 * skewDeg : skewDeg,\n          xTransformOrigin: isLTR ? flushWithEdge : tooltipWidth,\n          yTransformOrigin: indentedFromEdge,\n        };\n      case PositionWithCaret.CENTER_SIDE_END:\n        return {\n          yAlignment: strings.TOP,\n          xAlignment: isLTR ? strings.LEFT : strings.RIGHT,\n          yAxisPx: midpointHeight,\n          xAxisPx: flushWithEdge,\n          rotation: isLTR ? horizontalRotation : -1 * horizontalRotation,\n          skew: isLTR ? -1 * skewDeg : skewDeg,\n          xTransformOrigin: isLTR ? flushWithEdge : tooltipWidth,\n          yTransformOrigin: midpointHeight,\n        };\n      case PositionWithCaret.BOTTOM_SIDE_END:\n        return {\n          yAlignment: strings.BOTTOM,\n          xAlignment: isLTR ? strings.LEFT : strings.RIGHT,\n          yAxisPx: indentedFromEdge,\n          xAxisPx: flushWithEdge,\n          rotation: isLTR ? -1 * horizontalRotation : horizontalRotation,\n          skew: isLTR ? skewDeg : -1 * skewDeg,\n          xTransformOrigin: isLTR ? flushWithEdge : tooltipWidth,\n          yTransformOrigin: indentedFromHeight,\n        };\n\n      case PositionWithCaret.TOP_SIDE_START:\n        return {\n          yAlignment: strings.TOP,\n          xAlignment: isLTR ? strings.RIGHT : strings.LEFT,\n          yAxisPx: indentedFromEdge,\n          xAxisPx: flushWithEdge,\n          rotation: isLTR ? -1 * horizontalRotation : horizontalRotation,\n          skew: isLTR ? skewDeg : -1 * skewDeg,\n          xTransformOrigin: isLTR ? tooltipWidth : flushWithEdge,\n          yTransformOrigin: indentedFromEdge,\n        };\n      case PositionWithCaret.CENTER_SIDE_START:\n        return {\n          yAlignment: strings.TOP,\n          xAlignment: isLTR ? strings.RIGHT : strings.LEFT,\n          yAxisPx: midpointHeight,\n          xAxisPx: flushWithEdge,\n          rotation: isLTR ? -1 * horizontalRotation : horizontalRotation,\n          skew: isLTR ? skewDeg : -1 * skewDeg,\n          xTransformOrigin: isLTR ? tooltipWidth : flushWithEdge,\n          yTransformOrigin: midpointHeight,\n        };\n      case PositionWithCaret.BOTTOM_SIDE_START:\n        return {\n          yAlignment: strings.BOTTOM,\n          xAlignment: isLTR ? strings.RIGHT : strings.LEFT,\n          yAxisPx: indentedFromEdge,\n          xAxisPx: flushWithEdge,\n          rotation: isLTR ? horizontalRotation : -1 * horizontalRotation,\n          skew: isLTR ? -1 * skewDeg : skewDeg,\n          xTransformOrigin: isLTR ? tooltipWidth : flushWithEdge,\n          yTransformOrigin: indentedFromHeight,\n        };\n\n      case PositionWithCaret.ABOVE_CENTER:\n        return {\n          yAlignment: strings.BOTTOM,\n          xAlignment: strings.LEFT,\n          yAxisPx: flushWithEdge,\n          xAxisPx: midpointWidth,\n          rotation: verticalRotation,\n          skew: skewDeg,\n          xTransformOrigin: midpointWidth,\n          yTransformOrigin: tooltipHeight,\n        };\n      case PositionWithCaret.ABOVE_END:\n        return {\n          yAlignment: strings.BOTTOM,\n          xAlignment: isLTR ? strings.RIGHT : strings.LEFT,\n          yAxisPx: flushWithEdge,\n          xAxisPx: indentedFromEdge,\n          rotation: isLTR ? -1 * verticalRotation : verticalRotation,\n          skew: isLTR ? -1 * skewDeg : skewDeg,\n          xTransformOrigin: isLTR ? indentedFromWidth : indentedFromEdge,\n          yTransformOrigin: tooltipHeight,\n        };\n      default:\n      case PositionWithCaret.ABOVE_START:\n        return {\n          yAlignment: strings.BOTTOM,\n          xAlignment: isLTR ? strings.LEFT : strings.RIGHT,\n          yAxisPx: flushWithEdge,\n          xAxisPx: indentedFromEdge,\n          rotation: isLTR ? verticalRotation : -1 * verticalRotation,\n          skew: isLTR ? skewDeg : -1 * skewDeg,\n          xTransformOrigin: isLTR ? indentedFromEdge : indentedFromWidth,\n          yTransformOrigin: tooltipHeight,\n        };\n    }\n  }\n\n  private clearShowTimeout() {\n    if (this.showTimeout) {\n      clearTimeout(this.showTimeout);\n      this.showTimeout = null;\n    }\n  }\n\n  private clearHideTimeout() {\n    if (this.hideTimeout) {\n      clearTimeout(this.hideTimeout);\n      this.hideTimeout = null;\n    }\n  }\n\n  /**\n   * Method that allows user to specify additional elements that should have a\n   * scroll event listener attached to it. This should be used in instances\n   * where the anchor element is placed inside a scrollable container, and will\n   * ensure that the tooltip will stay attached to the anchor on scroll.\n   */\n  attachScrollHandler(\n      addEventListenerFn: <K extends EventType>(\n          event: K, handler: SpecificEventListener<K>) => void) {\n    this.addAncestorScrollEventListeners.push(() => {\n      addEventListenerFn('scroll', this.windowScrollHandler);\n    });\n  }\n\n  /**\n   * Must be used in conjunction with #attachScrollHandler. Removes the scroll\n   * event handler from elements on the page.\n   */\n  removeScrollHandler(\n      removeEventHandlerFn: <K extends EventType>(\n          event: K, handler: SpecificEventListener<K>) => void) {\n    this.removeAncestorScrollEventListeners.push(() => {\n      removeEventHandlerFn('scroll', this.windowScrollHandler);\n    });\n  }\n\n\n  destroy() {\n    if (this.frameId) {\n      cancelAnimationFrame(this.frameId);\n      this.frameId = null;\n    }\n\n    this.clearHideTimeout();\n    this.clearShowTimeout();\n\n    this.adapter.removeClass(SHOWN);\n    this.adapter.removeClass(SHOWING_TRANSITION);\n    this.adapter.removeClass(SHOWING);\n    this.adapter.removeClass(HIDE);\n    this.adapter.removeClass(HIDE_TRANSITION);\n\n    if (this.richTooltip) {\n      this.adapter.deregisterEventHandler(\n          'focusout', this.richTooltipFocusOutHandler);\n    }\n\n    if (!this.persistentTooltip) {\n      this.adapter.deregisterEventHandler(\n          'mouseenter', this.tooltipMouseEnterHandler);\n      this.adapter.deregisterEventHandler(\n          'mouseleave', this.tooltipMouseLeaveHandler);\n    }\n\n    this.adapter.deregisterAnchorEventHandler('blur', this.anchorBlurHandler);\n\n    this.adapter.deregisterDocumentEventHandler(\n        'click', this.documentClickHandler);\n    this.adapter.deregisterDocumentEventHandler(\n        'keydown', this.documentKeydownHandler);\n\n    this.adapter.deregisterWindowEventHandler(\n        'scroll', this.windowScrollHandler);\n    this.adapter.deregisterWindowEventHandler(\n        'resize', this.windowResizeHandler);\n    for (const fn of this.removeAncestorScrollEventListeners) {\n      fn();\n    }\n\n    this.animFrame.cancelAll();\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTooltipFoundation;\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './foundation';\nexport * from './constants';\nexport * from './types';\n","/**\n * @license\n * Copyright 2020 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Available options for how the tooltip element should be shown.\n */\nexport interface ShowTooltipOptions {\n  readonly hideFromScreenreader: boolean;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Defines the shape of the adapter expected by the foundation.\n * Implement this adapter for your framework of choice to delegate updates to\n * the component in your framework of choice. See architecture documentation\n * for more details.\n * https://github.com/material-components/material-components-web/blob/master/docs/code/architecture.md\n */\nexport interface MDCTopAppBarAdapter {\n  /**\n   * Adds a class to the root Element.\n   */\n  addClass(className: string): void;\n\n  /**\n   * Removes a class from the root Element.\n   */\n  removeClass(className: string): void;\n\n  /**\n   * Returns true if the root Element contains the given class.\n   */\n  hasClass(className: string): boolean;\n\n  /**\n   * Sets the specified inline style property on the root Element to the given value.\n   */\n  setStyle(property: string, value: string): void;\n\n  /**\n   * Gets the height of the top app bar.\n   */\n  getTopAppBarHeight(): number;\n\n  getViewportScrollY(): number;\n\n  getTotalActionItems(): number;\n\n  /**\n   * Emits an event when the navigation icon is clicked.\n   */\n  notifyNavigationIconClicked(): void;\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCComponent} from '@material/base/component';\nimport {SpecificEventListener} from '@material/base/types';\nimport {MDCRipple, MDCRippleFactory} from '@material/ripple/component';\nimport {MDCTopAppBarAdapter} from './adapter';\nimport {cssClasses, strings} from './constants';\nimport {MDCFixedTopAppBarFoundation} from './fixed/foundation';\nimport {MDCTopAppBarBaseFoundation} from './foundation';\nimport {MDCShortTopAppBarFoundation} from './short/foundation';\nimport {MDCTopAppBarFoundation} from './standard/foundation';\n\nexport class MDCTopAppBar extends MDCComponent<MDCTopAppBarBaseFoundation> {\n  static attachTo(root: Element): MDCTopAppBar {\n    return new MDCTopAppBar(root);\n  }\n\n  private handleNavigationClick!:\n      SpecificEventListener<'click'>;  // assigned in initialSyncWithDOM()\n  private handleWindowResize!:\n      SpecificEventListener<'resize'>;  // assigned in initialSyncWithDOM()\n  private handleTargetScroll!:\n      SpecificEventListener<'scroll'>;  // assigned in initialSyncWithDOM()\n  private navIcon!: Element|null;\n  private iconRipples!: MDCRipple[];\n  private scrollTarget!: EventTarget;\n\n  initialize(rippleFactory: MDCRippleFactory = (el) => MDCRipple.attachTo(el)) {\n    this.navIcon = this.root.querySelector(strings.NAVIGATION_ICON_SELECTOR);\n\n    // Get all icons in the toolbar and instantiate the ripples\n    const icons: Element[] =\n        [].slice.call(this.root.querySelectorAll(strings.ACTION_ITEM_SELECTOR));\n    if (this.navIcon) {\n      icons.push(this.navIcon);\n    }\n\n    this.iconRipples = icons.map((icon) => {\n      const ripple = rippleFactory(icon);\n      ripple.unbounded = true;\n      return ripple;\n    });\n\n    this.scrollTarget = window;\n  }\n\n  initialSyncWithDOM() {\n    this.handleNavigationClick =\n        this.foundation.handleNavigationClick.bind(this.foundation);\n    this.handleWindowResize =\n        this.foundation.handleWindowResize.bind(this.foundation);\n    this.handleTargetScroll =\n        this.foundation.handleTargetScroll.bind(this.foundation);\n\n    this.scrollTarget.addEventListener(\n        'scroll', this.handleTargetScroll as EventListener);\n\n    if (this.navIcon) {\n      this.navIcon.addEventListener(\n          'click', this.handleNavigationClick as EventListener);\n    }\n\n    const isFixed = this.root.classList.contains(cssClasses.FIXED_CLASS);\n    const isShort = this.root.classList.contains(cssClasses.SHORT_CLASS);\n    if (!isShort && !isFixed) {\n      window.addEventListener(\n          'resize', this.handleWindowResize as EventListener);\n    }\n  }\n\n  destroy() {\n    for (const iconRipple of this.iconRipples) {\n      iconRipple.destroy();\n    }\n    this.scrollTarget.removeEventListener(\n        'scroll', this.handleTargetScroll as EventListener);\n    if (this.navIcon) {\n      this.navIcon.removeEventListener(\n          'click', this.handleNavigationClick as EventListener);\n    }\n    const isFixed = this.root.classList.contains(cssClasses.FIXED_CLASS);\n    const isShort = this.root.classList.contains(cssClasses.SHORT_CLASS);\n    if (!isShort && !isFixed) {\n      window.removeEventListener(\n          'resize', this.handleWindowResize as EventListener);\n    }\n    super.destroy();\n  }\n\n  setScrollTarget(target: EventTarget) {\n    // Remove scroll handler from the previous scroll target\n    this.scrollTarget.removeEventListener(\n        'scroll', this.handleTargetScroll as EventListener);\n\n    this.scrollTarget = target;\n\n    // Initialize scroll handler on the new scroll target\n    this.handleTargetScroll =\n        this.foundation.handleTargetScroll.bind(this.foundation);\n    this.scrollTarget.addEventListener(\n        'scroll', this.handleTargetScroll as EventListener);\n  }\n\n  getDefaultFoundation() {\n    // DO NOT INLINE this variable. For backward compatibility, foundations take a Partial<MDCFooAdapter>.\n    // To ensure we don't accidentally omit any methods, we need a separate, strongly typed adapter variable.\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    const adapter: MDCTopAppBarAdapter = {\n      hasClass: (className) => this.root.classList.contains(className),\n      addClass: (className) => this.root.classList.add(className),\n      removeClass: (className) => this.root.classList.remove(className),\n      setStyle: (property, value) =>\n          (this.root as HTMLElement).style.setProperty(property, value),\n      getTopAppBarHeight: () => this.root.clientHeight,\n      notifyNavigationIconClicked: () =>\n          this.emit(strings.NAVIGATION_EVENT, {}),\n      getViewportScrollY: () => {\n        const win = this.scrollTarget as Window;\n        const el = this.scrollTarget as Element;\n        return win.pageYOffset !== undefined ? win.pageYOffset : el.scrollTop;\n      },\n      getTotalActionItems: () =>\n          this.root.querySelectorAll(strings.ACTION_ITEM_SELECTOR).length,\n    };\n    // tslint:enable:object-literal-sort-keys\n\n    let foundation: MDCTopAppBarBaseFoundation;\n    if (this.root.classList.contains(cssClasses.SHORT_CLASS)) {\n      foundation = new MDCShortTopAppBarFoundation(adapter);\n    } else if (this.root.classList.contains(cssClasses.FIXED_CLASS)) {\n      foundation = new MDCFixedTopAppBarFoundation(adapter);\n    } else {\n      foundation = new MDCTopAppBarFoundation(adapter);\n    }\n\n    return foundation;\n  }\n}\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nconst cssClasses = {\n  FIXED_CLASS: 'mdc-top-app-bar--fixed',\n  FIXED_SCROLLED_CLASS: 'mdc-top-app-bar--fixed-scrolled',\n  SHORT_CLASS: 'mdc-top-app-bar--short',\n  SHORT_COLLAPSED_CLASS: 'mdc-top-app-bar--short-collapsed',\n  SHORT_HAS_ACTION_ITEM_CLASS: 'mdc-top-app-bar--short-has-action-item',\n};\n\nconst numbers = {\n  DEBOUNCE_THROTTLE_RESIZE_TIME_MS: 100,\n  MAX_TOP_APP_BAR_HEIGHT: 128,\n};\n\nconst strings = {\n  ACTION_ITEM_SELECTOR: '.mdc-top-app-bar__action-item',\n  NAVIGATION_EVENT: 'MDCTopAppBar:nav',\n  NAVIGATION_ICON_SELECTOR: '.mdc-top-app-bar__navigation-icon',\n  ROOT_SELECTOR: '.mdc-top-app-bar',\n  TITLE_SELECTOR: '.mdc-top-app-bar__title',\n};\n\nexport {cssClasses, numbers, strings};\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {cssClasses} from '../constants';\nimport {MDCTopAppBarFoundation} from '../standard/foundation';\n\nexport class MDCFixedTopAppBarFoundation extends MDCTopAppBarFoundation {\n  /**\n   * State variable for the previous scroll iteration top app bar state\n   */\n  private wasScrolled = false;\n\n  /**\n   * Scroll handler for applying/removing the modifier class on the fixed top app bar.\n   * @override\n   */\n  handleTargetScroll() {\n    const currentScroll = this.adapter.getViewportScrollY();\n\n    if (currentScroll <= 0) {\n      if (this.wasScrolled) {\n        this.adapter.removeClass(cssClasses.FIXED_SCROLLED_CLASS);\n        this.wasScrolled = false;\n      }\n    } else {\n      if (!this.wasScrolled) {\n        this.adapter.addClass(cssClasses.FIXED_SCROLLED_CLASS);\n        this.wasScrolled = true;\n      }\n    }\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCFixedTopAppBarFoundation;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCFoundation} from '@material/base/foundation';\nimport {MDCTopAppBarAdapter} from './adapter';\nimport {cssClasses, numbers, strings} from './constants';\n\nexport class MDCTopAppBarBaseFoundation extends MDCFoundation<MDCTopAppBarAdapter> {\n  static get strings() {\n    return strings;\n  }\n\n  static get cssClasses() {\n    return cssClasses;\n  }\n\n  static get numbers() {\n    return numbers;\n  }\n\n  /**\n   * See {@link MDCTopAppBarAdapter} for typing information on parameters and return types.\n   */\n  static get defaultAdapter(): MDCTopAppBarAdapter {\n    // tslint:disable:object-literal-sort-keys Methods should be in the same order as the adapter interface.\n    return {\n      addClass: () => undefined,\n      removeClass: () => undefined,\n      hasClass: () => false,\n      setStyle: () => undefined,\n      getTopAppBarHeight: () => 0,\n      notifyNavigationIconClicked: () => undefined,\n      getViewportScrollY: () => 0,\n      getTotalActionItems: () => 0,\n    };\n    // tslint:enable:object-literal-sort-keys\n  }\n\n  /* istanbul ignore next: optional argument is not a branch statement */\n  constructor(adapter?: Partial<MDCTopAppBarAdapter>) {\n    super({...MDCTopAppBarBaseFoundation.defaultAdapter, ...adapter});\n  }\n\n  /** Other variants of TopAppBar foundation overrides this method */\n  handleTargetScroll() {} // tslint:disable-line:no-empty\n  /** Other variants of TopAppBar foundation overrides this method */\n  handleWindowResize() {} // tslint:disable-line:no-empty\n\n  handleNavigationClick() {\n    this.adapter.notifyNavigationIconClicked();\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTopAppBarBaseFoundation;\n","/**\n * @license\n * Copyright 2019 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nexport * from './adapter';\nexport * from './component';\nexport * from './constants';\nexport * from './foundation';\nexport * from './fixed/foundation';\nexport * from './short/foundation';\nexport * from './standard/foundation';\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTopAppBarAdapter} from '../adapter';\nimport {cssClasses} from '../constants';\nimport {MDCTopAppBarBaseFoundation} from '../foundation';\n\nexport class MDCShortTopAppBarFoundation extends MDCTopAppBarBaseFoundation {\n  // Public visibility for backward compatibility.\n  get isCollapsed(): boolean {\n    return this.collapsed;\n  }\n\n  private collapsed = false;\n\n  private isAlwaysCollapsed = false;\n\n  /* istanbul ignore next: optional argument is not a branch statement */\n  constructor(adapter?: Partial<MDCTopAppBarAdapter>) {\n    super(adapter);\n  }\n\n  init() {\n    super.init();\n\n    if (this.adapter.getTotalActionItems() > 0) {\n      this.adapter.addClass(cssClasses.SHORT_HAS_ACTION_ITEM_CLASS);\n    }\n\n    // If initialized with SHORT_COLLAPSED_CLASS, the bar should always be collapsed\n    this.setAlwaysCollapsed(\n      this.adapter.hasClass(cssClasses.SHORT_COLLAPSED_CLASS));\n  }\n\n  /**\n   * Set if the short top app bar should always be collapsed.\n   *\n   * @param value When `true`, bar will always be collapsed. When `false`, bar may collapse or expand based on scroll.\n   */\n  setAlwaysCollapsed(value: boolean) {\n    this.isAlwaysCollapsed = !!value;\n    if (this.isAlwaysCollapsed) {\n      this.collapse();\n    } else {\n      // let maybeCollapseBar determine if the bar should be collapsed\n      this.maybeCollapseBar();\n    }\n  }\n\n  getAlwaysCollapsed() {\n    return this.isAlwaysCollapsed;\n  }\n\n  /**\n   * Scroll handler for applying/removing the collapsed modifier class on the short top app bar.\n   * @override\n   */\n  handleTargetScroll() {\n    this.maybeCollapseBar();\n  }\n\n  private maybeCollapseBar() {\n    if (this.isAlwaysCollapsed) {\n      return;\n    }\n    const currentScroll = this.adapter.getViewportScrollY();\n\n    if (currentScroll <= 0) {\n      if (this.collapsed) {\n        this.uncollapse();\n      }\n    } else {\n      if (!this.collapsed) {\n        this.collapse();\n      }\n    }\n  }\n\n  private uncollapse() {\n    this.adapter.removeClass(cssClasses.SHORT_COLLAPSED_CLASS);\n    this.collapsed = false;\n  }\n\n  private collapse() {\n    this.adapter.addClass(cssClasses.SHORT_COLLAPSED_CLASS);\n    this.collapsed = true;\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCShortTopAppBarFoundation;\n","/**\n * @license\n * Copyright 2018 Google Inc.\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {MDCTopAppBarAdapter} from '../adapter';\nimport {numbers} from '../constants';\nimport {MDCTopAppBarBaseFoundation} from '../foundation';\n\nconst INITIAL_VALUE = 0;\n\nexport class MDCTopAppBarFoundation extends MDCTopAppBarBaseFoundation {\n  /**\n   * Indicates if the top app bar was docked in the previous scroll handler iteration.\n   */\n  private wasDocked = true;\n\n  /**\n   * Indicates if the top app bar is docked in the fully shown position.\n   */\n  private isDockedShowing = true;\n\n  /**\n   * Variable for current scroll position of the top app bar\n   */\n  private currentAppBarOffsetTop = 0;\n\n  /**\n   * Used to prevent the top app bar from being scrolled out of view during resize events\n   */\n  private isCurrentlyBeingResized = false;\n\n  /**\n   * The timeout that's used to throttle the resize events\n   */\n  private resizeThrottleId = INITIAL_VALUE;\n\n  /**\n   * Used for diffs of current scroll position vs previous scroll position\n   */\n  private lastScrollPosition: number;\n\n  /**\n   * Used to verify when the top app bar is completely showing or completely hidden\n   */\n  private topAppBarHeight: number;\n\n  /**\n   * The timeout that's used to debounce toggling the isCurrentlyBeingResized\n   * variable after a resize\n   */\n  private resizeDebounceId = INITIAL_VALUE;\n\n  /* istanbul ignore next: optional argument is not a branch statement */\n  constructor(adapter?: Partial<MDCTopAppBarAdapter>) {\n    super(adapter);\n\n    this.lastScrollPosition = this.adapter.getViewportScrollY();\n    this.topAppBarHeight = this.adapter.getTopAppBarHeight();\n  }\n\n  destroy() {\n    super.destroy();\n    this.adapter.setStyle('top', '');\n  }\n\n  /**\n   * Scroll handler for the default scroll behavior of the top app bar.\n   * @override\n   */\n  handleTargetScroll() {\n    const currentScrollPosition = Math.max(this.adapter.getViewportScrollY(), 0);\n    const diff = currentScrollPosition - this.lastScrollPosition;\n    this.lastScrollPosition = currentScrollPosition;\n\n    // If the window is being resized the lastScrollPosition needs to be updated\n    // but the current scroll of the top app bar should stay in the same\n    // position.\n    if (!this.isCurrentlyBeingResized) {\n      this.currentAppBarOffsetTop -= diff;\n\n      if (this.currentAppBarOffsetTop > 0) {\n        this.currentAppBarOffsetTop = 0;\n      } else if (Math.abs(this.currentAppBarOffsetTop) > this.topAppBarHeight) {\n        this.currentAppBarOffsetTop = -this.topAppBarHeight;\n      }\n\n      this.moveTopAppBar();\n    }\n  }\n\n  /**\n   * Top app bar resize handler that throttle/debounce functions that execute updates.\n   * @override\n   */\n  handleWindowResize() {\n    // Throttle resize events 10 p/s\n    if (!this.resizeThrottleId) {\n      this.resizeThrottleId = setTimeout(() => {\n        this.resizeThrottleId = INITIAL_VALUE;\n        this.throttledResizeHandler();\n      }, numbers.DEBOUNCE_THROTTLE_RESIZE_TIME_MS);\n    }\n\n    this.isCurrentlyBeingResized = true;\n\n    if (this.resizeDebounceId) {\n      clearTimeout(this.resizeDebounceId);\n    }\n\n    this.resizeDebounceId = setTimeout(() => {\n      this.handleTargetScroll();\n      this.isCurrentlyBeingResized = false;\n      this.resizeDebounceId = INITIAL_VALUE;\n    }, numbers.DEBOUNCE_THROTTLE_RESIZE_TIME_MS);\n  }\n\n  /**\n   * Function to determine if the DOM needs to update.\n   */\n  private checkForUpdate(): boolean {\n    const offscreenBoundaryTop = -this.topAppBarHeight;\n    const hasAnyPixelsOffscreen = this.currentAppBarOffsetTop < 0;\n    const hasAnyPixelsOnscreen =\n        this.currentAppBarOffsetTop > offscreenBoundaryTop;\n    const partiallyShowing = hasAnyPixelsOffscreen && hasAnyPixelsOnscreen;\n\n    // If it's partially showing, it can't be docked.\n    if (partiallyShowing) {\n      this.wasDocked = false;\n    } else {\n      // Not previously docked and not partially showing, it's now docked.\n      if (!this.wasDocked) {\n        this.wasDocked = true;\n        return true;\n      } else if (this.isDockedShowing !== hasAnyPixelsOnscreen) {\n        this.isDockedShowing = hasAnyPixelsOnscreen;\n        return true;\n      }\n    }\n\n    return partiallyShowing;\n  }\n\n  /**\n   * Function to move the top app bar if needed.\n   */\n  private moveTopAppBar() {\n    if (this.checkForUpdate()) {\n      // Once the top app bar is fully hidden we use the max potential top app bar height as our offset\n      // so the top app bar doesn't show if the window resizes and the new height > the old height.\n      let offset = this.currentAppBarOffsetTop;\n      if (Math.abs(offset) >= this.topAppBarHeight) {\n        offset = -numbers.MAX_TOP_APP_BAR_HEIGHT;\n      }\n\n      this.adapter.setStyle('top', offset + 'px');\n    }\n  }\n\n  /**\n   * Throttled function that updates the top app bar scrolled values if the\n   * top app bar height changes.\n   */\n  private throttledResizeHandler() {\n    const currentHeight = this.adapter.getTopAppBarHeight();\n    if (this.topAppBarHeight !== currentHeight) {\n      this.wasDocked = false;\n\n      // Since the top app bar has a different height depending on the screen width, this\n      // will ensure that the top app bar remains in the correct location if\n      // completely hidden and a resize makes the top app bar a different height.\n      this.currentAppBarOffsetTop -= this.topAppBarHeight - currentHeight;\n      this.topAppBarHeight = currentHeight;\n    }\n    this.handleTargetScroll();\n  }\n}\n\n// tslint:disable-next-line:no-default-export Needed for backward compatibility with MDC Web v0.44.0 and earlier.\nexport default MDCTopAppBarFoundation;\n"],"sourceRoot":""}