tab.js

/*!
  * Bootstrap tab.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/selector-engine.js')) :
  typeof define === 'function' && define.amd ? define(['./dom/data.js', './dom/event-handler.js', './dom/selector-engine.js'], factory) :
  (global = global || self, global.Tab = factory(global.Data, global.EventHandler, global.SelectorEngine));
}(this, (function (Data, EventHandler, 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;
  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;
  }

  /**
   * --------------------------------------------------------------------------
   * 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 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 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 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 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 = 'tab';
  var VERSION = '5.0.0-alpha1';
  var DATA_KEY = 'bs.tab';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
  var EVENT_HIDE = "hide" + EVENT_KEY;
  var EVENT_HIDDEN = "hidden" + EVENT_KEY;
  var EVENT_SHOW = "show" + EVENT_KEY;
  var EVENT_SHOWN = "shown" + EVENT_KEY;
  var EVENT_CLICK_DATA_API = "click" + EVENT_KEY + DATA_API_KEY;
  var CLASS_NAME_DROPDOWN_MENU = 'dropdown-menu';
  var CLASS_NAME_ACTIVE = 'active';
  var CLASS_NAME_DISABLED = 'disabled';
  var CLASS_NAME_FADE = 'fade';
  var CLASS_NAME_SHOW = 'show';
  var SELECTOR_DROPDOWN = '.dropdown';
  var SELECTOR_NAV_LIST_GROUP = '.nav, .list-group';
  var SELECTOR_ACTIVE = '.active';
  var SELECTOR_ACTIVE_UL = ':scope > li > .active';
  var SELECTOR_DATA_TOGGLE = '[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]';
  var SELECTOR_DROPDOWN_TOGGLE = '.dropdown-toggle';
  var SELECTOR_DROPDOWN_ACTIVE_CHILD = ':scope > .dropdown-menu .active';
  /**
   * ------------------------------------------------------------------------
   * Class Definition
   * ------------------------------------------------------------------------
   */

  var Tab = /*#__PURE__*/function () {
    function Tab(element) {
      this._element = element;
      Data.setData(this._element, DATA_KEY, this);
    } // Getters


    var _proto = Tab.prototype;

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

      if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && this._element.classList.contains(CLASS_NAME_ACTIVE) || this._element.classList.contains(CLASS_NAME_DISABLED)) {
        return;
      }

      var previous;
      var target = getElementFromSelector(this._element);

      var listElement = this._element.closest(SELECTOR_NAV_LIST_GROUP);

      if (listElement) {
        var itemSelector = listElement.nodeName === 'UL' || listElement.nodeName === 'OL' ? SELECTOR_ACTIVE_UL : SELECTOR_ACTIVE;
        previous = SelectorEngine.find(itemSelector, listElement);
        previous = previous[previous.length - 1];
      }

      var hideEvent = null;

      if (previous) {
        hideEvent = EventHandler.trigger(previous, EVENT_HIDE, {
          relatedTarget: this._element
        });
      }

      var showEvent = EventHandler.trigger(this._element, EVENT_SHOW, {
        relatedTarget: previous
      });

      if (showEvent.defaultPrevented || hideEvent !== null && hideEvent.defaultPrevented) {
        return;
      }

      this._activate(this._element, listElement);

      var complete = function complete() {
        EventHandler.trigger(previous, EVENT_HIDDEN, {
          relatedTarget: _this._element
        });
        EventHandler.trigger(_this._element, EVENT_SHOWN, {
          relatedTarget: previous
        });
      };

      if (target) {
        this._activate(target, target.parentNode, complete);
      } else {
        complete();
      }
    };

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

    _proto._activate = function _activate(element, container, callback) {
      var _this2 = this;

      var activeElements = container && (container.nodeName === 'UL' || container.nodeName === 'OL') ? SelectorEngine.find(SELECTOR_ACTIVE_UL, container) : SelectorEngine.children(container, SELECTOR_ACTIVE);
      var active = activeElements[0];
      var isTransitioning = callback && active && active.classList.contains(CLASS_NAME_FADE);

      var complete = function complete() {
        return _this2._transitionComplete(element, active, callback);
      };

      if (active && isTransitioning) {
        var transitionDuration = getTransitionDurationFromElement(active);
        active.classList.remove(CLASS_NAME_SHOW);
        EventHandler.one(active, TRANSITION_END, complete);
        emulateTransitionEnd(active, transitionDuration);
      } else {
        complete();
      }
    };

    _proto._transitionComplete = function _transitionComplete(element, active, callback) {
      if (active) {
        active.classList.remove(CLASS_NAME_ACTIVE);
        var dropdownChild = SelectorEngine.findOne(SELECTOR_DROPDOWN_ACTIVE_CHILD, active.parentNode);

        if (dropdownChild) {
          dropdownChild.classList.remove(CLASS_NAME_ACTIVE);
        }

        if (active.getAttribute('role') === 'tab') {
          active.setAttribute('aria-selected', false);
        }
      }

      element.classList.add(CLASS_NAME_ACTIVE);

      if (element.getAttribute('role') === 'tab') {
        element.setAttribute('aria-selected', true);
      }

      reflow(element);

      if (element.classList.contains(CLASS_NAME_FADE)) {
        element.classList.add(CLASS_NAME_SHOW);
      }

      if (element.parentNode && element.parentNode.classList.contains(CLASS_NAME_DROPDOWN_MENU)) {
        var dropdownElement = element.closest(SELECTOR_DROPDOWN);

        if (dropdownElement) {
          SelectorEngine.find(SELECTOR_DROPDOWN_TOGGLE).forEach(function (dropdown) {
            return dropdown.classList.add(CLASS_NAME_ACTIVE);
          });
        }

        element.setAttribute('aria-expanded', true);
      }

      if (callback) {
        callback();
      }
    } // Static
    ;

    Tab.jQueryInterface = function jQueryInterface(config) {
      return this.each(function () {
        var data = Data.getData(this, DATA_KEY) || new Tab(this);

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

          data[config]();
        }
      });
    };

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

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

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


  EventHandler.on(document, EVENT_CLICK_DATA_API, SELECTOR_DATA_TOGGLE, function (event) {
    event.preventDefault();
    var data = Data.getData(this, DATA_KEY) || new Tab(this);
    data.show();
  });
  var $ = getjQuery();
  /**
   * ------------------------------------------------------------------------
   * jQuery
   * ------------------------------------------------------------------------
   * add .tab to jQuery only if jQuery is present
   */

  /* istanbul ignore if */

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

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

  return Tab;

})));
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