carbon-components/umd/components/content-switcher/content-switcher.js

(function (global, factory) {
  if (typeof define === "function" && define.amd) {
    define(["exports", "../../globals/js/settings", "../../globals/js/misc/mixin", "../../globals/js/mixins/create-component", "../../globals/js/mixins/init-component-by-search", "../../globals/js/mixins/evented-state", "../../globals/js/mixins/handles", "../../globals/js/misc/event-matches", "../../globals/js/misc/on"], factory);
  } else if (typeof exports !== "undefined") {
    factory(exports, require("../../globals/js/settings"), require("../../globals/js/misc/mixin"), require("../../globals/js/mixins/create-component"), require("../../globals/js/mixins/init-component-by-search"), require("../../globals/js/mixins/evented-state"), require("../../globals/js/mixins/handles"), require("../../globals/js/misc/event-matches"), require("../../globals/js/misc/on"));
  } else {
    var mod = {
      exports: {}
    };
    factory(mod.exports, global.settings, global.mixin, global.createComponent, global.initComponentBySearch, global.eventedState, global.handles, global.eventMatches, global.on);
    global.contentSwitcher = mod.exports;
  }
})(this, function (_exports, _settings, _mixin2, _createComponent, _initComponentBySearch, _eventedState, _handles, _eventMatches, _on) {
  "use strict";

  Object.defineProperty(_exports, "__esModule", {
    value: true
  });
  _exports.default = void 0;
  _settings = _interopRequireDefault(_settings);
  _mixin2 = _interopRequireDefault(_mixin2);
  _createComponent = _interopRequireDefault(_createComponent);
  _initComponentBySearch = _interopRequireDefault(_initComponentBySearch);
  _eventedState = _interopRequireDefault(_eventedState);
  _handles = _interopRequireDefault(_handles);
  _eventMatches = _interopRequireDefault(_eventMatches);
  _on = _interopRequireDefault(_on);

  function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
      default: obj
    };
  }

  function _typeof(obj) {
    if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
      _typeof = function _typeof(obj) {
        return typeof obj;
      };
    } else {
      _typeof = function _typeof(obj) {
        return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
      };
    }

    return _typeof(obj);
  }

  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }

  function _defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

  function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    return Constructor;
  }

  function _possibleConstructorReturn(self, call) {
    if (call && (_typeof(call) === "object" || typeof call === "function")) {
      return call;
    }

    return _assertThisInitialized(self);
  }

  function _assertThisInitialized(self) {
    if (self === void 0) {
      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }

    return self;
  }

  function _getPrototypeOf(o) {
    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
      return o.__proto__ || Object.getPrototypeOf(o);
    };
    return _getPrototypeOf(o);
  }

  function _inherits(subClass, superClass) {
    if (typeof superClass !== "function" && superClass !== null) {
      throw new TypeError("Super expression must either be null or a function");
    }

    subClass.prototype = Object.create(superClass && superClass.prototype, {
      constructor: {
        value: subClass,
        writable: true,
        configurable: true
      }
    });
    if (superClass) _setPrototypeOf(subClass, superClass);
  }

  function _setPrototypeOf(o, p) {
    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
      o.__proto__ = p;
      return o;
    };

    return _setPrototypeOf(o, p);
  }

  var toArray = function toArray(arrayLike) {
    return Array.prototype.slice.call(arrayLike);
  };

  var ContentSwitcher =
  /*#__PURE__*/
  function (_mixin) {
    _inherits(ContentSwitcher, _mixin);
    /**
     * Set of content switcher buttons.
     * @extends CreateComponent
     * @extends InitComponentBySearch
     * @extends EventedState
     * @extends Handles
     * @param {HTMLElement} element The element working as a set of content switcher buttons.
     * @param {Object} [options] The component options.
     * @param {string} [options.selectorButton] The CSS selector to find switcher buttons.
     * @param {string} [options.selectorButtonSelected] The CSS selector to find the selected switcher button.
     * @param {string} [options.classActive] The CSS class for switcher button's selected state.
     * @param {string} [options.eventBeforeSelected]
     *   The name of the custom event fired before a switcher button is selected.
     *   Cancellation of this event stops selection of content switcher button.
     * @param {string} [options.eventAfterSelected] The name of the custom event fired after a switcher button is selected.
     */


    function ContentSwitcher(element, options) {
      var _this;

      _classCallCheck(this, ContentSwitcher);

      _this = _possibleConstructorReturn(this, _getPrototypeOf(ContentSwitcher).call(this, element, options));

      _this.manage((0, _on.default)(_this.element, 'click', function (event) {
        _this._handleClick(event);
      }));

      return _this;
    }
    /**
     * Handles click on content switcher button set.
     * If the click is on a content switcher button, activates it.
     * @param {Event} event The event triggering this method.
     */


    _createClass(ContentSwitcher, [{
      key: "_handleClick",
      value: function _handleClick(event) {
        var button = (0, _eventMatches.default)(event, this.options.selectorButton);

        if (button) {
          this.changeState({
            group: 'selected',
            item: button,
            launchingEvent: event
          });
        }
      }
      /**
       * Internal method of {@linkcode ContentSwitcher#setActive .setActive()}, to select a content switcher button.
       * @private
       * @param {Object} detail The detail of the event trigging this action.
       * @param {HTMLElement} detail.item The button to be selected.
       * @param {Function} callback Callback called when change in state completes.
       */

    }, {
      key: "_changeState",
      value: function _changeState(_ref, callback) {
        var _this2 = this;

        var item = _ref.item; // `options.selectorLink` is not defined in this class itself, code here primary is for inherited classes

        var itemLink = item.querySelector(this.options.selectorLink);

        if (itemLink) {
          toArray(this.element.querySelectorAll(this.options.selectorLink)).forEach(function (link) {
            if (link !== itemLink) {
              link.setAttribute('aria-selected', 'false');
            }
          });
          itemLink.setAttribute('aria-selected', 'true');
        }

        var selectorButtons = toArray(this.element.querySelectorAll(this.options.selectorButton));
        selectorButtons.forEach(function (button) {
          if (button !== item) {
            button.setAttribute('aria-selected', false);
            button.classList.toggle(_this2.options.classActive, false);
            toArray(button.ownerDocument.querySelectorAll(button.dataset.target)).forEach(function (element) {
              element.setAttribute('hidden', '');
              element.setAttribute('aria-hidden', 'true');
            });
          }
        });
        item.classList.toggle(this.options.classActive, true);
        item.setAttribute('aria-selected', true);
        toArray(item.ownerDocument.querySelectorAll(item.dataset.target)).forEach(function (element) {
          element.removeAttribute('hidden');
          element.setAttribute('aria-hidden', 'false');
        });

        if (callback) {
          callback();
        }
      }
      /**
       * Selects a content switcher button.
       * If the selected button has `data-target` attribute, DOM elements it points to as a CSS selector will be shown.
       * DOM elements associated with unselected buttons in the same way will be hidden.
       * @param {HTMLElement} item The button to be selected.
       * @param {ChangeState~callback} callback The callback is called once selection is finished
       * or is canceled. Will only invoke callback if it's passed in.
       */

    }, {
      key: "setActive",
      value: function setActive(item, callback) {
        this.changeState({
          group: 'selected',
          item: item
        }, function (error) {
          if (error) {
            if (callback) {
              callback(Object.assign(error, {
                item: item
              }));
            }
          } else if (callback) {
            callback(null, item);
          }
        });
      }
      /**
       * The map associating DOM element and content switcher set instance.
       * @member ContentSwitcher.components
       * @type {WeakMap}
       */

    }], [{
      key: "options",

      /**
       * The component options.
       * If `options` is specified in the constructor,
       * {@linkcode ContentSwitcher.create .create()}, or {@linkcode ContentSwitcher.init .init()},
       * properties in this object are overriden for the instance being create and how {@linkcode ContentSwitcher.init .init()} works.
       * @member ContentSwitcher.options
       * @type {Object}
       * @property {string} selectorInit The CSS selector to find content switcher button set.
       * @property {string} [selectorButton] The CSS selector to find switcher buttons.
       * @property {string} [selectorButtonSelected] The CSS selector to find the selected switcher button.
       * @property {string} [classActive] The CSS class for switcher button's selected state.
       * @property {string} [eventBeforeSelected]
       *   The name of the custom event fired before a switcher button is selected.
       *   Cancellation of this event stops selection of content switcher button.
       * @property {string} [eventAfterSelected] The name of the custom event fired after a switcher button is selected.
       */
      get: function get() {
        var prefix = _settings.default.prefix;
        return {
          selectorInit: '[data-content-switcher]',
          selectorButton: "input[type=\"radio\"], .".concat(prefix, "--content-switcher-btn"),
          classActive: "".concat(prefix, "--content-switcher--selected"),
          eventBeforeSelected: 'content-switcher-beingselected',
          eventAfterSelected: 'content-switcher-selected'
        };
      }
    }]);

    ContentSwitcher.components = new WeakMap();
    return ContentSwitcher;
  }((0, _mixin2.default)(_createComponent.default, _initComponentBySearch.default, _eventedState.default, _handles.default));

  var _default = ContentSwitcher;
  _exports.default = _default;
});