collapse.js

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

var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

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

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v4.0.0-alpha.4): collapse.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */

var Collapse = function ($) {

  /**
   * ------------------------------------------------------------------------
   * Constants
   * ------------------------------------------------------------------------
   */

  var NAME = 'collapse';
  var VERSION = '4.0.0-alpha.4';
  var DATA_KEY = 'bs.collapse';
  var EVENT_KEY = '.' + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var JQUERY_NO_CONFLICT = $.fn[NAME];
  var TRANSITION_DURATION = 600;

  var Default = {
    toggle: true,
    parent: ''
  };

  var DefaultType = {
    toggle: 'boolean',
    parent: 'string'
  };

  var Event = {
    SHOW: 'show' + EVENT_KEY,
    SHOWN: 'shown' + EVENT_KEY,
    HIDE: 'hide' + EVENT_KEY,
    HIDDEN: 'hidden' + EVENT_KEY,
    CLICK_DATA_API: 'click' + EVENT_KEY + DATA_API_KEY
  };

  var ClassName = {
    IN: 'in',
    COLLAPSE: 'collapse',
    COLLAPSING: 'collapsing',
    COLLAPSED: 'collapsed'
  };

  var Dimension = {
    WIDTH: 'width',
    HEIGHT: 'height'
  };

  var Selector = {
    ACTIVES: '.panel > .in, .panel > .collapsing',
    DATA_TOGGLE: '[data-toggle="collapse"]'
  };

  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */

  var Collapse = function () {
    function Collapse(element, config) {
      _classCallCheck(this, Collapse);

      this._isTransitioning = false;
      this._element = element;
      this._config = this._getConfig(config);
      this._triggerArray = $.makeArray($('[data-toggle="collapse"][href="#' + element.id + '"],' + ('[data-toggle="collapse"][data-target="#' + element.id + '"]')));

      this._parent = this._config.parent ? this._getParent() : null;

      if (!this._config.parent) {
        this._addAriaAndCollapsedClass(this._element, this._triggerArray);
      }

      if (this._config.toggle) {
        this.toggle();
      }
    }

    // getters

    // public

    Collapse.prototype.toggle = function toggle() {
      if ($(this._element).hasClass(ClassName.IN)) {
        this.hide();
      } else {
        this.show();
      }
    };

    Collapse.prototype.show = function show() {
      var _this = this;

      if (this._isTransitioning || $(this._element).hasClass(ClassName.IN)) {
        return;
      }

      var actives = void 0;
      var activesData = void 0;

      if (this._parent) {
        actives = $.makeArray($(Selector.ACTIVES));
        if (!actives.length) {
          actives = null;
        }
      }

      if (actives) {
        activesData = $(actives).data(DATA_KEY);
        if (activesData && activesData._isTransitioning) {
          return;
        }
      }

      var startEvent = $.Event(Event.SHOW);
      $(this._element).trigger(startEvent);
      if (startEvent.isDefaultPrevented()) {
        return;
      }

      if (actives) {
        Collapse._jQueryInterface.call($(actives), 'hide');
        if (!activesData) {
          $(actives).data(DATA_KEY, null);
        }
      }

      var dimension = this._getDimension();

      $(this._element).removeClass(ClassName.COLLAPSE).addClass(ClassName.COLLAPSING);

      this._element.style[dimension] = 0;
      this._element.setAttribute('aria-expanded', true);

      if (this._triggerArray.length) {
        $(this._triggerArray).removeClass(ClassName.COLLAPSED).attr('aria-expanded', true);
      }

      this.setTransitioning(true);

      var complete = function complete() {
        $(_this._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).addClass(ClassName.IN);

        _this._element.style[dimension] = '';

        _this.setTransitioning(false);

        $(_this._element).trigger(Event.SHOWN);
      };

      if (!Util.supportsTransitionEnd()) {
        complete();
        return;
      }

      var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
      var scrollSize = 'scroll' + capitalizedDimension;

      $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);

      this._element.style[dimension] = this._element[scrollSize] + 'px';
    };

    Collapse.prototype.hide = function hide() {
      var _this2 = this;

      if (this._isTransitioning || !$(this._element).hasClass(ClassName.IN)) {
        return;
      }

      var startEvent = $.Event(Event.HIDE);
      $(this._element).trigger(startEvent);
      if (startEvent.isDefaultPrevented()) {
        return;
      }

      var dimension = this._getDimension();
      var offsetDimension = dimension === Dimension.WIDTH ? 'offsetWidth' : 'offsetHeight';

      this._element.style[dimension] = this._element[offsetDimension] + 'px';

      Util.reflow(this._element);

      $(this._element).addClass(ClassName.COLLAPSING).removeClass(ClassName.COLLAPSE).removeClass(ClassName.IN);

      this._element.setAttribute('aria-expanded', false);

      if (this._triggerArray.length) {
        $(this._triggerArray).addClass(ClassName.COLLAPSED).attr('aria-expanded', false);
      }

      this.setTransitioning(true);

      var complete = function complete() {
        _this2.setTransitioning(false);
        $(_this2._element).removeClass(ClassName.COLLAPSING).addClass(ClassName.COLLAPSE).trigger(Event.HIDDEN);
      };

      this._element.style[dimension] = 0;

      if (!Util.supportsTransitionEnd()) {
        complete();
        return;
      }

      $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
    };

    Collapse.prototype.setTransitioning = function setTransitioning(isTransitioning) {
      this._isTransitioning = isTransitioning;
    };

    Collapse.prototype.dispose = function dispose() {
      $.removeData(this._element, DATA_KEY);

      this._config = null;
      this._parent = null;
      this._element = null;
      this._triggerArray = null;
      this._isTransitioning = null;
    };

    // private

    Collapse.prototype._getConfig = function _getConfig(config) {
      config = $.extend({}, Default, config);
      config.toggle = Boolean(config.toggle); // coerce string values
      Util.typeCheckConfig(NAME, config, DefaultType);
      return config;
    };

    Collapse.prototype._getDimension = function _getDimension() {
      var hasWidth = $(this._element).hasClass(Dimension.WIDTH);
      return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT;
    };

    Collapse.prototype._getParent = function _getParent() {
      var _this3 = this;

      var parent = $(this._config.parent)[0];
      var selector = '[data-toggle="collapse"][data-parent="' + this._config.parent + '"]';

      $(parent).find(selector).each(function (i, element) {
        _this3._addAriaAndCollapsedClass(Collapse._getTargetFromElement(element), [element]);
      });

      return parent;
    };

    Collapse.prototype._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
      if (element) {
        var isOpen = $(element).hasClass(ClassName.IN);
        element.setAttribute('aria-expanded', isOpen);

        if (triggerArray.length) {
          $(triggerArray).toggleClass(ClassName.COLLAPSED, !isOpen).attr('aria-expanded', isOpen);
        }
      }
    };

    // static

    Collapse._getTargetFromElement = function _getTargetFromElement(element) {
      var selector = Util.getSelectorFromElement(element);
      return selector ? $(selector)[0] : null;
    };

    Collapse._jQueryInterface = function _jQueryInterface(config) {
      return this.each(function () {
        var $this = $(this);
        var data = $this.data(DATA_KEY);
        var _config = $.extend({}, Default, $this.data(), (typeof config === 'undefined' ? 'undefined' : _typeof(config)) === 'object' && config);

        if (!data && _config.toggle && /show|hide/.test(config)) {
          _config.toggle = false;
        }

        if (!data) {
          data = new Collapse(this, _config);
          $this.data(DATA_KEY, data);
        }

        if (typeof config === 'string') {
          if (data[config] === undefined) {
            throw new Error('No method named "' + config + '"');
          }
          data[config]();
        }
      });
    };

    _createClass(Collapse, null, [{
      key: 'VERSION',
      get: function get() {
        return VERSION;
      }
    }, {
      key: 'Default',
      get: function get() {
        return Default;
      }
    }]);

    return Collapse;
  }();

  /**
   * ------------------------------------------------------------------------
   * Data Api implementation
   * ------------------------------------------------------------------------
   */

  $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
    event.preventDefault();

    var target = Collapse._getTargetFromElement(this);
    var data = $(target).data(DATA_KEY);
    var config = data ? 'toggle' : $(this).data();

    Collapse._jQueryInterface.call($(target), config);
  });

  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   */

  $.fn[NAME] = Collapse._jQueryInterface;
  $.fn[NAME].Constructor = Collapse;
  $.fn[NAME].noConflict = function () {
    $.fn[NAME] = JQUERY_NO_CONFLICT;
    return Collapse._jQueryInterface;
  };

  return Collapse;
}(jQuery);
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