collapse.js

'use strict';

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-beta): 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-beta';
  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 = {
    SHOW: 'show',
    COLLAPSE: 'collapse',
    COLLAPSING: 'collapsing',
    COLLAPSED: 'collapsed'
  };

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

  var Selector = {
    ACTIVES: '.show, .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 + '"]')));
      var tabToggles = $(Selector.DATA_TOGGLE);
      for (var i = 0; i < tabToggles.length; i++) {
        var elem = tabToggles[i];
        var selector = Util.getSelectorFromElement(elem);
        if (selector !== null && $(selector).filter(element).length > 0) {
          this._triggerArray.push(elem);
        }
      }

      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

    _createClass(Collapse, [{
      key: 'toggle',


      // public

      value: function toggle() {
        if ($(this._element).hasClass(ClassName.SHOW)) {
          this.hide();
        } else {
          this.show();
        }
      }
    }, {
      key: 'show',
      value: function show() {
        var _this = this;

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

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

        if (this._parent) {
          actives = $.makeArray($(this._parent).children().children(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;

        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.SHOW);

          _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';
      }
    }, {
      key: 'hide',
      value: function hide() {
        var _this2 = this;

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

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

        var dimension = this._getDimension();

        this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + 'px';

        Util.reflow(this._element);

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

        if (this._triggerArray.length) {
          for (var i = 0; i < this._triggerArray.length; i++) {
            var trigger = this._triggerArray[i];
            var selector = Util.getSelectorFromElement(trigger);
            if (selector !== null) {
              var $elem = $(selector);
              if (!$elem.hasClass(ClassName.SHOW)) {
                $(trigger).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] = '';

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

        $(this._element).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
      }
    }, {
      key: 'setTransitioning',
      value: function setTransitioning(isTransitioning) {
        this._isTransitioning = isTransitioning;
      }
    }, {
      key: 'dispose',
      value: function dispose() {
        $.removeData(this._element, DATA_KEY);

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

      // private

    }, {
      key: '_getConfig',
      value: function _getConfig(config) {
        config = $.extend({}, Default, config);
        config.toggle = Boolean(config.toggle); // coerce string values
        Util.typeCheckConfig(NAME, config, DefaultType);
        return config;
      }
    }, {
      key: '_getDimension',
      value: function _getDimension() {
        var hasWidth = $(this._element).hasClass(Dimension.WIDTH);
        return hasWidth ? Dimension.WIDTH : Dimension.HEIGHT;
      }
    }, {
      key: '_getParent',
      value: 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;
      }
    }, {
      key: '_addAriaAndCollapsedClass',
      value: function _addAriaAndCollapsedClass(element, triggerArray) {
        if (element) {
          var isOpen = $(element).hasClass(ClassName.SHOW);

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

      // static

    }], [{
      key: '_getTargetFromElement',
      value: function _getTargetFromElement(element) {
        var selector = Util.getSelectorFromElement(element);
        return selector ? $(selector)[0] : null;
      }
    }, {
      key: '_jQueryInterface',
      value: 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 (typeof data[config] === 'undefined') {
              throw new Error('No method named "' + config + '"');
            }
            data[config]();
          }
        });
      }
    }, {
      key: 'VERSION',
      get: function get() {
        return VERSION;
      }
    }, {
      key: 'Default',
      get: function get() {
        return Default;
      }
    }]);

    return Collapse;
  }();

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

  $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
    // preventDefault only for <a> elements (which change the URL) not inside the collapsible element
    if (event.target.tagName === 'A' && !$.contains(this, event.target)) {
      event.preventDefault();
    }

    var $trigger = $(this);
    var selector = Util.getSelectorFromElement(this);
    $(selector).each(function () {
      var $target = $(this);
      var data = $target.data(DATA_KEY);
      var config = data ? 'toggle' : $trigger.data();
      Collapse._jQueryInterface.call($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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