carbon-components/umd/components/accordion/accordion.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/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/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.handles, global.eventMatches, global.on);
    global.accordion = mod.exports;
  }
})(this, function (_exports, _settings, _mixin2, _createComponent, _initComponentBySearch, _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);
  _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 Accordion =
  /*#__PURE__*/
  function (_mixin) {
    _inherits(Accordion, _mixin);
    /**
     * Accordion.
     * @extends CreateComponent
     * @extends InitComponentBySearch
     * @extends Handles
     * @param {HTMLElement} element The element working as an accordion.
     */


    function Accordion(element, options) {
      var _this;

      _classCallCheck(this, Accordion);

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

      _this.manage((0, _on.default)(_this.element, 'click', function (event) {
        var item = (0, _eventMatches.default)(event, _this.options.selectorAccordionItem);

        if (item && !(0, _eventMatches.default)(event, _this.options.selectorAccordionContent)) {
          _this._toggle(item);
        }
      }));
      /**
       *
       *  DEPRECATE in v8
       *
       *  Swapping to a button elemenet instead of a div
       *  automatically maps click events to keypress as well
       *  This event listener now is only added if user is using
       *  the older markup
       */


      if (!_this._checkIfButton()) {
        _this.manage((0, _on.default)(_this.element, 'keypress', function (event) {
          var item = (0, _eventMatches.default)(event, _this.options.selectorAccordionItem);

          if (item && !(0, _eventMatches.default)(event, _this.options.selectorAccordionContent)) {
            _this._handleKeypress(event);
          }
        }));
      }

      return _this;
    }

    _createClass(Accordion, [{
      key: "_checkIfButton",
      value: function _checkIfButton() {
        return this.element.firstElementChild.firstElementChild.nodeName === 'BUTTON';
      }
      /**
       * Handles toggling of active state of accordion via keyboard
       * @param {Event} event The event triggering this method.
       */

    }, {
      key: "_handleKeypress",
      value: function _handleKeypress(event) {
        if (event.which === 13 || event.which === 32) {
          this._toggle(event.target);
        }
      }
    }, {
      key: "_toggle",
      value: function _toggle(element) {
        var heading = element.querySelector(this.options.selectorAccordionItemHeading);
        var expanded = heading.getAttribute('aria-expanded');

        if (expanded !== null) {
          heading.setAttribute('aria-expanded', expanded === 'true' ? 'false' : 'true');
        }

        element.classList.toggle(this.options.classActive);
      }
      /**
       * The component options.
       * If `options` is specified in the constructor,
       * {@linkcode NumberInput.create .create()}, or {@linkcode NumberInput.init .init()},
       * properties in this object are overriden for the instance being create and how {@linkcode NumberInput.init .init()} works.
       * @property {string} selectorInit The CSS selector to find accordion UIs.
       */

    }], [{
      key: "options",
      get: function get() {
        var prefix = _settings.default.prefix;
        return {
          selectorInit: '[data-accordion]',
          selectorAccordionItem: ".".concat(prefix, "--accordion__item"),
          selectorAccordionItemHeading: ".".concat(prefix, "--accordion__heading"),
          selectorAccordionContent: ".".concat(prefix, "--accordion__content"),
          classActive: "".concat(prefix, "--accordion__item--active")
        };
      }
      /**
       * The map associating DOM element and accordion UI instance.
       * @type {WeakMap}
       */

    }]);

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

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