collapse.js

/*!
  * Bootstrap collapse.js v5.0.0-alpha1 (https://getbootstrap.com/)
  * Copyright 2011-2020 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('./dom/data.js'), require('./dom/event-handler.js'), require('./dom/manipulator.js'), require('./dom/selector-engine.js')) :
  typeof define === 'function' && define.amd ? define(['./dom/data.js', './dom/event-handler.js', './dom/manipulator.js', './dom/selector-engine.js'], factory) :
  (global = global || self, global.Collapse = factory(global.Data, global.EventHandler, global.Manipulator, global.SelectorEngine));
}(this, (function (Data, EventHandler, Manipulator, SelectorEngine) { 'use strict';

  Data = Data && Object.prototype.hasOwnProperty.call(Data, 'default') ? Data['default'] : Data;
  EventHandler = EventHandler && Object.prototype.hasOwnProperty.call(EventHandler, 'default') ? EventHandler['default'] : EventHandler;
  Manipulator = Manipulator && Object.prototype.hasOwnProperty.call(Manipulator, 'default') ? Manipulator['default'] : Manipulator;
  SelectorEngine = SelectorEngine && Object.prototype.hasOwnProperty.call(SelectorEngine, 'default') ? SelectorEngine['default'] : SelectorEngine;

  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 _defineProperty(obj, key, value) {
    if (key in obj) {
      Object.defineProperty(obj, key, {
        value: value,
        enumerable: true,
        configurable: true,
        writable: true
      });
    } else {
      obj[key] = value;
    }

    return obj;
  }

  function ownKeys(object, enumerableOnly) {
    var keys = Object.keys(object);

    if (Object.getOwnPropertySymbols) {
      var symbols = Object.getOwnPropertySymbols(object);
      if (enumerableOnly) symbols = symbols.filter(function (sym) {
        return Object.getOwnPropertyDescriptor(object, sym).enumerable;
      });
      keys.push.apply(keys, symbols);
    }

    return keys;
  }

  function _objectSpread2(target) {
    for (var i = 1; i < arguments.length; i++) {
      var source = arguments[i] != null ? arguments[i] : {};

      if (i % 2) {
        ownKeys(Object(source), true).forEach(function (key) {
          _defineProperty(target, key, source[key]);
        });
      } else if (Object.getOwnPropertyDescriptors) {
        Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));
      } else {
        ownKeys(Object(source)).forEach(function (key) {
          Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key));
        });
      }
    }

    return target;
  }

  /**
   * --------------------------------------------------------------------------
   * Bootstrap (v5.0.0-alpha1): util/index.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
  var MILLISECONDS_MULTIPLIER = 1000;
  var TRANSITION_END = 'transitionend'; // Shoutout AngusCroll (https://goo.gl/pxwQGp)

  var toType = function toType(obj) {
    if (obj === null || obj === undefined) {
      return "" + obj;
    }

    return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase();
  };

  var getSelector = function getSelector(element) {
    var selector = element.getAttribute('data-target');

    if (!selector || selector === '#') {
      var hrefAttr = element.getAttribute('href');
      selector = hrefAttr && hrefAttr !== '#' ? hrefAttr.trim() : null;
    }

    return selector;
  };

  var getSelectorFromElement = function getSelectorFromElement(element) {
    var selector = getSelector(element);

    if (selector) {
      return document.querySelector(selector) ? selector : null;
    }

    return null;
  };

  var getElementFromSelector = function getElementFromSelector(element) {
    var selector = getSelector(element);
    return selector ? document.querySelector(selector) : null;
  };

  var getTransitionDurationFromElement = function getTransitionDurationFromElement(element) {
    if (!element) {
      return 0;
    } // Get transition-duration of the element


    var _window$getComputedSt = window.getComputedStyle(element),
        transitionDuration = _window$getComputedSt.transitionDuration,
        transitionDelay = _window$getComputedSt.transitionDelay;

    var floatTransitionDuration = parseFloat(transitionDuration);
    var floatTransitionDelay = parseFloat(transitionDelay); // Return 0 if element or transition duration is not found

    if (!floatTransitionDuration && !floatTransitionDelay) {
      return 0;
    } // If multiple durations are defined, take the first


    transitionDuration = transitionDuration.split(',')[0];
    transitionDelay = transitionDelay.split(',')[0];
    return (parseFloat(transitionDuration) + parseFloat(transitionDelay)) * MILLISECONDS_MULTIPLIER;
  };

  var triggerTransitionEnd = function triggerTransitionEnd(element) {
    element.dispatchEvent(new Event(TRANSITION_END));
  };

  var isElement = function isElement(obj) {
    return (obj[0] || obj).nodeType;
  };

  var emulateTransitionEnd = function emulateTransitionEnd(element, duration) {
    var called = false;
    var durationPadding = 5;
    var emulatedDuration = duration + durationPadding;

    function listener() {
      called = true;
      element.removeEventListener(TRANSITION_END, listener);
    }

    element.addEventListener(TRANSITION_END, listener);
    setTimeout(function () {
      if (!called) {
        triggerTransitionEnd(element);
      }
    }, emulatedDuration);
  };

  var typeCheckConfig = function typeCheckConfig(componentName, config, configTypes) {
    Object.keys(configTypes).forEach(function (property) {
      var expectedTypes = configTypes[property];
      var value = config[property];
      var valueType = value && isElement(value) ? 'element' : toType(value);

      if (!new RegExp(expectedTypes).test(valueType)) {
        throw new Error(componentName.toUpperCase() + ": " + ("Option \"" + property + "\" provided type \"" + valueType + "\" ") + ("but expected type \"" + expectedTypes + "\"."));
      }
    });
  };

  var reflow = function reflow(element) {
    return element.offsetHeight;
  };

  var getjQuery = function getjQuery() {
    var _window = window,
        jQuery = _window.jQuery;

    if (jQuery && !document.body.hasAttribute('data-no-jquery')) {
      return jQuery;
    }

    return null;
  };

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

  var NAME = 'collapse';
  var VERSION = '5.0.0-alpha1';
  var DATA_KEY = 'bs.collapse';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var Default = {
    toggle: true,
    parent: ''
  };
  var DefaultType = {
    toggle: 'boolean',
    parent: '(string|element)'
  };
  var EVENT_SHOW = "show" + EVENT_KEY;
  var EVENT_SHOWN = "shown" + EVENT_KEY;
  var EVENT_HIDE = "hide" + EVENT_KEY;
  var EVENT_HIDDEN = "hidden" + EVENT_KEY;
  var EVENT_CLICK_DATA_API = "click" + EVENT_KEY + DATA_API_KEY;
  var CLASS_NAME_SHOW = 'show';
  var CLASS_NAME_COLLAPSE = 'collapse';
  var CLASS_NAME_COLLAPSING = 'collapsing';
  var CLASS_NAME_COLLAPSED = 'collapsed';
  var WIDTH = 'width';
  var HEIGHT = 'height';
  var SELECTOR_ACTIVES = '.show, .collapsing';
  var SELECTOR_DATA_TOGGLE = '[data-toggle="collapse"]';
  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */

  var Collapse = /*#__PURE__*/function () {
    function Collapse(element, config) {
      this._isTransitioning = false;
      this._element = element;
      this._config = this._getConfig(config);
      this._triggerArray = SelectorEngine.find(SELECTOR_DATA_TOGGLE + "[href=\"#" + element.id + "\"]," + (SELECTOR_DATA_TOGGLE + "[data-target=\"#" + element.id + "\"]"));
      var toggleList = SelectorEngine.find(SELECTOR_DATA_TOGGLE);

      for (var i = 0, len = toggleList.length; i < len; i++) {
        var elem = toggleList[i];
        var selector = getSelectorFromElement(elem);
        var filterElement = SelectorEngine.find(selector).filter(function (foundElem) {
          return foundElem === element;
        });

        if (selector !== null && filterElement.length) {
          this._selector = selector;

          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();
      }

      Data.setData(element, DATA_KEY, this);
    } // Getters


    var _proto = Collapse.prototype;

    // Public
    _proto.toggle = function toggle() {
      if (this._element.classList.contains(CLASS_NAME_SHOW)) {
        this.hide();
      } else {
        this.show();
      }
    };

    _proto.show = function show() {
      var _this = this;

      if (this._isTransitioning || this._element.classList.contains(CLASS_NAME_SHOW)) {
        return;
      }

      var actives;
      var activesData;

      if (this._parent) {
        actives = SelectorEngine.find(SELECTOR_ACTIVES, this._parent).filter(function (elem) {
          if (typeof _this._config.parent === 'string') {
            return elem.getAttribute('data-parent') === _this._config.parent;
          }

          return elem.classList.contains(CLASS_NAME_COLLAPSE);
        });

        if (actives.length === 0) {
          actives = null;
        }
      }

      var container = SelectorEngine.findOne(this._selector);

      if (actives) {
        var tempActiveData = actives.filter(function (elem) {
          return container !== elem;
        });
        activesData = tempActiveData[0] ? Data.getData(tempActiveData[0], DATA_KEY) : null;

        if (activesData && activesData._isTransitioning) {
          return;
        }
      }

      var startEvent = EventHandler.trigger(this._element, EVENT_SHOW);

      if (startEvent.defaultPrevented) {
        return;
      }

      if (actives) {
        actives.forEach(function (elemActive) {
          if (container !== elemActive) {
            Collapse.collapseInterface(elemActive, 'hide');
          }

          if (!activesData) {
            Data.setData(elemActive, DATA_KEY, null);
          }
        });
      }

      var dimension = this._getDimension();

      this._element.classList.remove(CLASS_NAME_COLLAPSE);

      this._element.classList.add(CLASS_NAME_COLLAPSING);

      this._element.style[dimension] = 0;

      if (this._triggerArray.length) {
        this._triggerArray.forEach(function (element) {
          element.classList.remove(CLASS_NAME_COLLAPSED);
          element.setAttribute('aria-expanded', true);
        });
      }

      this.setTransitioning(true);

      var complete = function complete() {
        _this._element.classList.remove(CLASS_NAME_COLLAPSING);

        _this._element.classList.add(CLASS_NAME_COLLAPSE, CLASS_NAME_SHOW);

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

        _this.setTransitioning(false);

        EventHandler.trigger(_this._element, EVENT_SHOWN);
      };

      var capitalizedDimension = dimension[0].toUpperCase() + dimension.slice(1);
      var scrollSize = "scroll" + capitalizedDimension;
      var transitionDuration = getTransitionDurationFromElement(this._element);
      EventHandler.one(this._element, TRANSITION_END, complete);
      emulateTransitionEnd(this._element, transitionDuration);
      this._element.style[dimension] = this._element[scrollSize] + "px";
    };

    _proto.hide = function hide() {
      var _this2 = this;

      if (this._isTransitioning || !this._element.classList.contains(CLASS_NAME_SHOW)) {
        return;
      }

      var startEvent = EventHandler.trigger(this._element, EVENT_HIDE);

      if (startEvent.defaultPrevented) {
        return;
      }

      var dimension = this._getDimension();

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

      this._element.classList.add(CLASS_NAME_COLLAPSING);

      this._element.classList.remove(CLASS_NAME_COLLAPSE, CLASS_NAME_SHOW);

      var triggerArrayLength = this._triggerArray.length;

      if (triggerArrayLength > 0) {
        for (var i = 0; i < triggerArrayLength; i++) {
          var trigger = this._triggerArray[i];
          var elem = getElementFromSelector(trigger);

          if (elem && !elem.classList.contains(CLASS_NAME_SHOW)) {
            trigger.classList.add(CLASS_NAME_COLLAPSED);
            trigger.setAttribute('aria-expanded', false);
          }
        }
      }

      this.setTransitioning(true);

      var complete = function complete() {
        _this2.setTransitioning(false);

        _this2._element.classList.remove(CLASS_NAME_COLLAPSING);

        _this2._element.classList.add(CLASS_NAME_COLLAPSE);

        EventHandler.trigger(_this2._element, EVENT_HIDDEN);
      };

      this._element.style[dimension] = '';
      var transitionDuration = getTransitionDurationFromElement(this._element);
      EventHandler.one(this._element, TRANSITION_END, complete);
      emulateTransitionEnd(this._element, transitionDuration);
    };

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

    _proto.dispose = function dispose() {
      Data.removeData(this._element, DATA_KEY);
      this._config = null;
      this._parent = null;
      this._element = null;
      this._triggerArray = null;
      this._isTransitioning = null;
    } // Private
    ;

    _proto._getConfig = function _getConfig(config) {
      config = _objectSpread2(_objectSpread2({}, Default), config);
      config.toggle = Boolean(config.toggle); // Coerce string values

      typeCheckConfig(NAME, config, DefaultType);
      return config;
    };

    _proto._getDimension = function _getDimension() {
      var hasWidth = this._element.classList.contains(WIDTH);

      return hasWidth ? WIDTH : HEIGHT;
    };

    _proto._getParent = function _getParent() {
      var _this3 = this;

      var parent = this._config.parent;

      if (isElement(parent)) {
        // it's a jQuery object
        if (typeof parent.jquery !== 'undefined' || typeof parent[0] !== 'undefined') {
          parent = parent[0];
        }
      } else {
        parent = SelectorEngine.findOne(parent);
      }

      var selector = SELECTOR_DATA_TOGGLE + "[data-parent=\"" + parent + "\"]";
      SelectorEngine.find(selector, parent).forEach(function (element) {
        var selected = getElementFromSelector(element);

        _this3._addAriaAndCollapsedClass(selected, [element]);
      });
      return parent;
    };

    _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
      if (element) {
        var isOpen = element.classList.contains(CLASS_NAME_SHOW);

        if (triggerArray.length) {
          triggerArray.forEach(function (elem) {
            if (isOpen) {
              elem.classList.remove(CLASS_NAME_COLLAPSED);
            } else {
              elem.classList.add(CLASS_NAME_COLLAPSED);
            }

            elem.setAttribute('aria-expanded', isOpen);
          });
        }
      }
    } // Static
    ;

    Collapse.collapseInterface = function collapseInterface(element, config) {
      var data = Data.getData(element, DATA_KEY);

      var _config = _objectSpread2(_objectSpread2(_objectSpread2({}, Default), Manipulator.getDataAttributes(element)), typeof config === 'object' && config ? config : {});

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

      if (!data) {
        data = new Collapse(element, _config);
      }

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

        data[config]();
      }
    };

    Collapse.jQueryInterface = function jQueryInterface(config) {
      return this.each(function () {
        Collapse.collapseInterface(this, config);
      });
    };

    Collapse.getInstance = function getInstance(element) {
      return Data.getData(element, DATA_KEY);
    };

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

    return Collapse;
  }();
  /**
   * ------------------------------------------------------------------------
   * Data Api implementation
   * ------------------------------------------------------------------------
   */


  EventHandler.on(document, 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') {
      event.preventDefault();
    }

    var triggerData = Manipulator.getDataAttributes(this);
    var selector = getSelectorFromElement(this);
    var selectorElements = SelectorEngine.find(selector);
    selectorElements.forEach(function (element) {
      var data = Data.getData(element, DATA_KEY);
      var config;

      if (data) {
        // update parent attribute
        if (data._parent === null && typeof triggerData.parent === 'string') {
          data._config.parent = triggerData.parent;
          data._parent = data._getParent();
        }

        config = 'toggle';
      } else {
        config = triggerData;
      }

      Collapse.collapseInterface(element, config);
    });
  });
  var $ = getjQuery();
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .collapse to jQuery only if jQuery is present
   */

  /* istanbul ignore if */

  if ($) {
    var JQUERY_NO_CONFLICT = $.fn[NAME];
    $.fn[NAME] = Collapse.jQueryInterface;
    $.fn[NAME].Constructor = Collapse;

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

  return Collapse;

})));
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