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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 {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 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 override 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 override initialize(\n focusTrapFactory: MDCDialogFocusTrapFactory = (el, focusOptions) =>\n 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 override 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 override 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 override 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 override get cssClasses() {\n return cssClasses;\n }\n\n static override get strings() {\n return strings;\n }\n\n static override get numbers() {\n return numbers;\n }\n\n static override 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 override init() {\n if (this.adapter.hasClass(cssClasses.STACKED)) {\n this.setAutoStackButtons(false);\n }\n this.isFullscreen = this.adapter.hasClass(cssClasses.FULLSCREEN);\n }\n\n override 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 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\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 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 override attachTo(root: Element, opts: MDCRippleAttachOpts = {\n isUnbounded: undefined\n }): 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 override getDefaultFoundation() {\n return new MDCRippleFoundation(MDCRipple.createAdapter(this));\n }\n\n override 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 override get cssClasses() {\n return cssClasses;\n }\n\n static override get strings() {\n return strings;\n }\n\n static override get numbers() {\n return numbers;\n }\n\n static override get defaultAdapter(): MDCRippleAdapter {\n return {\n addClass: () => undefined,\n browserSupportsCssVars: () => true,\n computeBoundingRect: () =>\n ({top: 0, right: 0, bottom: 0, left: 0, width: 0, height: 0} as any),\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 override 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 override 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 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: DOMRect):\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"],"sourceRoot":""} |