ProfessionalWiki / Bootstrap

resources/bootstrap/js/collapse.js

/*!
  * Bootstrap collapse.js v4.6.2 (https://getbootstrap.com/)
  * Copyright 2011-2022 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
  */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('jquery'), require('./util.js')) :
  typeof define === 'function' && define.amd ? define(['jquery', './util'], factory) :

The variable define seems to be never declared. If this is a global, consider adding a /** global: define */ comment.

  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.Collapse = factory(global.jQuery, global.Util));

The variable globalThis seems to be never declared. If this is a global, consider adding a /** global: globalThis */ comment.

If you intend to check if the variable self is declared in the current environment, consider using typeof self === "undefined" instead. This is safe if the variable is not actually declared.

Usage of the sequence operator is discouraged, since it may lead to obfuscated code.

})(this, (function ($, Util) { 'use strict';

  function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

  var $__default = /*#__PURE__*/_interopDefaultLegacy($);
  var Util__default = /*#__PURE__*/_interopDefaultLegacy(Util);

  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;

Curly braces around statements make for more readable code and help prevent bugs when you add further statements.

      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

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

Curly braces around statements make for more readable code and help prevent bugs when you add further statements.

    if (staticProps) _defineProperties(Constructor, staticProps);

Curly braces around statements make for more readable code and help prevent bugs when you add further statements.

    Object.defineProperty(Constructor, "prototype", {
      writable: false
    });
    return Constructor;
  }

  function _extends() {
    _extends = Object.assign ? Object.assign.bind() : function (target) {

It seems like you are trying to overwrite a function name here. _extends is already defined in line 36 as a function. While this will work, it can be very confusing.

      for (var i = 1; i < arguments.length; i++) {
        var source = arguments[i];

        for (var key in source) {

A for in loop automatically includes the property of any prototype object, consider checking the key using hasOwnProperty.

          if (Object.prototype.hasOwnProperty.call(source, key)) {
            target[key] = source[key];
          }
        }
      }

      return target;
    };
    return _extends.apply(this, arguments);
  }

  /**
   * Constants
   */

  var NAME = 'collapse';
  var VERSION = '4.6.2';
  var DATA_KEY = 'bs.collapse';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var JQUERY_NO_CONFLICT = $__default["default"].fn[NAME];
  var CLASS_NAME_SHOW = 'show';
  var CLASS_NAME_COLLAPSE = 'collapse';
  var CLASS_NAME_COLLAPSING = 'collapsing';
  var CLASS_NAME_COLLAPSED = 'collapsed';
  var DIMENSION_WIDTH = 'width';
  var DIMENSION_HEIGHT = 'height';
  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 SELECTOR_ACTIVES = '.show, .collapsing';
  var SELECTOR_DATA_TOGGLE = '[data-toggle="collapse"]';
  var Default = {
    toggle: true,
    parent: ''
  };
  var DefaultType = {
    toggle: 'boolean',
    parent: '(string|element)'
  };
  /**
   * Class definition
   */

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

      for (var i = 0, len = toggleList.length; i < len; i++) {
        var elem = toggleList[i];
        var selector = Util__default["default"].getSelectorFromElement(elem);
        var filterElement = [].slice.call(document.querySelectorAll(selector)).filter(function (foundElem) {
          return foundElem === element;
        });

        if (selector !== null && filterElement.length > 0) {
          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();
      }
    } // Getters


    var _proto = Collapse.prototype;

    // Public
    _proto.toggle = function toggle() {
      if ($__default["default"](this._element).hasClass(CLASS_NAME_SHOW)) {
        this.hide();
      } else {
        this.show();
      }
    };

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

      if (this._isTransitioning || $__default["default"](this._element).hasClass(CLASS_NAME_SHOW)) {
        return;
      }

      var actives;
      var activesData;

      if (this._parent) {
        actives = [].slice.call(this._parent.querySelectorAll(SELECTOR_ACTIVES)).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;
        }
      }

      if (actives) {
        activesData = $__default["default"](actives).not(this._selector).data(DATA_KEY);

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

      var startEvent = $__default["default"].Event(EVENT_SHOW);
      $__default["default"](this._element).trigger(startEvent);

      if (startEvent.isDefaultPrevented()) {
        return;
      }

      if (actives) {
        Collapse._jQueryInterface.call($__default["default"](actives).not(this._selector), 'hide');

        if (!activesData) {
          $__default["default"](actives).data(DATA_KEY, null);
        }
      }

      var dimension = this._getDimension();

      $__default["default"](this._element).removeClass(CLASS_NAME_COLLAPSE).addClass(CLASS_NAME_COLLAPSING);
      this._element.style[dimension] = 0;

      if (this._triggerArray.length) {
        $__default["default"](this._triggerArray).removeClass(CLASS_NAME_COLLAPSED).attr('aria-expanded', true);
      }

      this.setTransitioning(true);

      var complete = function complete() {
        $__default["default"](_this._element).removeClass(CLASS_NAME_COLLAPSING).addClass(CLASS_NAME_COLLAPSE + " " + CLASS_NAME_SHOW);
        _this._element.style[dimension] = '';

        _this.setTransitioning(false);

        $__default["default"](_this._element).trigger(EVENT_SHOWN);
      };

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

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

      if (this._isTransitioning || !$__default["default"](this._element).hasClass(CLASS_NAME_SHOW)) {
        return;
      }

      var startEvent = $__default["default"].Event(EVENT_HIDE);
      $__default["default"](this._element).trigger(startEvent);

      if (startEvent.isDefaultPrevented()) {
        return;
      }

      var dimension = this._getDimension();

      this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + "px";
      Util__default["default"].reflow(this._element);
      $__default["default"](this._element).addClass(CLASS_NAME_COLLAPSING).removeClass(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 selector = Util__default["default"].getSelectorFromElement(trigger);

          if (selector !== null) {
            var $elem = $__default["default"]([].slice.call(document.querySelectorAll(selector)));

            if (!$elem.hasClass(CLASS_NAME_SHOW)) {
              $__default["default"](trigger).addClass(CLASS_NAME_COLLAPSED).attr('aria-expanded', false);
            }
          }
        }
      }

      this.setTransitioning(true);

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

        $__default["default"](_this2._element).removeClass(CLASS_NAME_COLLAPSING).addClass(CLASS_NAME_COLLAPSE).trigger(EVENT_HIDDEN);
      };

      this._element.style[dimension] = '';
      var transitionDuration = Util__default["default"].getTransitionDurationFromElement(this._element);
      $__default["default"](this._element).one(Util__default["default"].TRANSITION_END, complete).emulateTransitionEnd(transitionDuration);
    };

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

    _proto.dispose = function dispose() {
      $__default["default"].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 = _extends({}, Default, config);
      config.toggle = Boolean(config.toggle); // Coerce string values

      Util__default["default"].typeCheckConfig(NAME, config, DefaultType);
      return config;
    };

    _proto._getDimension = function _getDimension() {
      var hasWidth = $__default["default"](this._element).hasClass(DIMENSION_WIDTH);
      return hasWidth ? DIMENSION_WIDTH : DIMENSION_HEIGHT;
    };

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

      var parent;

      if (Util__default["default"].isElement(this._config.parent)) {
        parent = this._config.parent; // It's a jQuery object

        if (typeof this._config.parent.jquery !== 'undefined') {
          parent = this._config.parent[0];
        }
      } else {
        parent = document.querySelector(this._config.parent);
      }

      var selector = "[data-toggle=\"collapse\"][data-parent=\"" + this._config.parent + "\"]";
      var children = [].slice.call(parent.querySelectorAll(selector));
      $__default["default"](children).each(function (i, element) {
        _this3._addAriaAndCollapsedClass(Collapse._getTargetFromElement(element), [element]);
      });
      return parent;
    };

    _proto._addAriaAndCollapsedClass = function _addAriaAndCollapsedClass(element, triggerArray) {
      var isOpen = $__default["default"](element).hasClass(CLASS_NAME_SHOW);

      if (triggerArray.length) {
        $__default["default"](triggerArray).toggleClass(CLASS_NAME_COLLAPSED, !isOpen).attr('aria-expanded', isOpen);
      }
    } // Static
    ;

    Collapse._getTargetFromElement = function _getTargetFromElement(element) {
      var selector = Util__default["default"].getSelectorFromElement(element);
      return selector ? document.querySelector(selector) : null;
    };

    Collapse._jQueryInterface = function _jQueryInterface(config) {
      return this.each(function () {
        var $element = $__default["default"](this);
        var data = $element.data(DATA_KEY);

        var _config = _extends({}, Default, $element.data(), typeof config === 'object' && config ? config : {});

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

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

        if (typeof config === 'string') {
          if (typeof data[config] === 'undefined') {
            throw new TypeError("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
   */


  $__default["default"](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.currentTarget.tagName === 'A') {
      event.preventDefault();
    }

    var $trigger = $__default["default"](this);
    var selector = Util__default["default"].getSelectorFromElement(this);
    var selectors = [].slice.call(document.querySelectorAll(selector));
    $__default["default"](selectors).each(function () {
      var $target = $__default["default"](this);
      var data = $target.data(DATA_KEY);
      var config = data ? 'toggle' : $trigger.data();

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

  $__default["default"].fn[NAME] = Collapse._jQueryInterface;
  $__default["default"].fn[NAME].Constructor = Collapse;

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

  return Collapse;

}));
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