Merge branch 'v4-dev' into dropdown-keyboard

1 files changed, 191 insertions, 129 deletions

diff --git a/dist/js/bootstrap.js b/dist/js/bootstrap.js
index ee87b9f88..5599d7165 100644
--- a/dist/js/bootstrap.js
+++ b/dist/js/bootstrap.js
@@ -141,13 +141,16 @@ var Util = function ($) {
     },
     getSelectorFromElement: function getSelectorFromElement(element) {
       var selector = element.getAttribute('data-target');
-
-      if (!selector) {
+      if (!selector || selector === '#') {
         selector = element.getAttribute('href') || '';
-        selector = /^#[a-z]/i.test(selector) ? selector : null;
       }
 
-      return selector;
+      try {
+        var $selector = $(selector);
+        return $selector.length > 0 ? selector : null;
+      } catch (error) {
+        return null;
+      }
     },
     reflow: function reflow(element) {
       return element.offsetHeight;
@@ -628,10 +631,9 @@ var Carousel = function ($) {
     // public
 
     Carousel.prototype.next = function next() {
-      if (this._isSliding) {
-        throw new Error('Carousel is sliding');
+      if (!this._isSliding) {
+        this._slide(Direction.NEXT);
       }
-      this._slide(Direction.NEXT);
     };
 
     Carousel.prototype.nextWhenVisible = function nextWhenVisible() {
@@ -642,10 +644,9 @@ var Carousel = function ($) {
     };
 
     Carousel.prototype.prev = function prev() {
-      if (this._isSliding) {
-        throw new Error('Carousel is sliding');
+      if (!this._isSliding) {
+        this._slide(Direction.PREV);
       }
-      this._slide(Direction.PREV);
     };
 
     Carousel.prototype.pause = function pause(event) {
@@ -788,9 +789,13 @@ var Carousel = function ($) {
     };
 
     Carousel.prototype._triggerSlideEvent = function _triggerSlideEvent(relatedTarget, eventDirectionName) {
+      var targetIndex = this._getItemIndex(relatedTarget);
+      var fromIndex = this._getItemIndex($(this._element).find(Selector.ACTIVE_ITEM)[0]);
       var slideEvent = $.Event(Event.SLIDE, {
         relatedTarget: relatedTarget,
-        direction: eventDirectionName
+        direction: eventDirectionName,
+        from: fromIndex,
+        to: targetIndex
       });
 
       $(this._element).trigger(slideEvent);
@@ -814,8 +819,9 @@ var Carousel = function ($) {
       var _this5 = this;
 
       var activeElement = $(this._element).find(Selector.ACTIVE_ITEM)[0];
+      var activeElementIndex = this._getItemIndex(activeElement);
       var nextElement = element || activeElement && this._getItemByDirection(direction, activeElement);
-
+      var nextElementIndex = this._getItemIndex(nextElement);
       var isCycling = Boolean(this._interval);
 
       var directionalClassName = void 0;
@@ -857,7 +863,9 @@ var Carousel = function ($) {
 
       var slidEvent = $.Event(Event.SLID, {
         relatedTarget: nextElement,
-        direction: eventDirectionName
+        direction: eventDirectionName,
+        from: activeElementIndex,
+        to: nextElementIndex
       });
 
       if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.SLIDE)) {
@@ -1055,7 +1063,8 @@ var Collapse = function ($) {
 
   var Selector = {
     ACTIVES: '.card > .show, .card > .collapsing',
-    DATA_TOGGLE: '[data-toggle="collapse"]'
+    DATA_TOGGLE: '[data-toggle="collapse"]',
+    DATA_CHILDREN: 'data-children'
   };
 
   /**
@@ -1072,13 +1081,20 @@ var Collapse = function ($) {
       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);
       }
 
+      this._selectorActives = Selector.ACTIVES;
+      if (this._parent) {
+        var childrenSelector = this._parent.hasAttribute(Selector.DATA_CHILDREN) ? this._parent.getAttribute(Selector.DATA_CHILDREN) : null;
+        if (childrenSelector !== null) {
+          this._selectorActives = childrenSelector + ' > .show, ' + childrenSelector + ' > .collapsing';
+        }
+      }
+
       if (this._config.toggle) {
         this.toggle();
       }
@@ -1099,11 +1115,7 @@ var Collapse = function ($) {
     Collapse.prototype.show = function show() {
       var _this6 = this;
 
-      if (this._isTransitioning) {
-        throw new Error('Collapse is transitioning');
-      }
-
-      if ($(this._element).hasClass(ClassName.SHOW)) {
+      if (this._isTransitioning || $(this._element).hasClass(ClassName.SHOW)) {
         return;
       }
 
@@ -1111,7 +1123,7 @@ var Collapse = function ($) {
       var activesData = void 0;
 
       if (this._parent) {
-        actives = $.makeArray($(this._parent).find(Selector.ACTIVES));
+        actives = $.makeArray($(this._parent).find(this._selectorActives));
         if (!actives.length) {
           actives = null;
         }
@@ -1176,11 +1188,7 @@ var Collapse = function ($) {
     Collapse.prototype.hide = function hide() {
       var _this7 = this;
 
-      if (this._isTransitioning) {
-        throw new Error('Collapse is transitioning');
-      }
-
-      if (!$(this._element).hasClass(ClassName.SHOW)) {
+      if (this._isTransitioning || !$(this._element).hasClass(ClassName.SHOW)) {
         return;
       }
 
@@ -1191,9 +1199,8 @@ var Collapse = function ($) {
       }
 
       var dimension = this._getDimension();
-      var offsetDimension = dimension === Dimension.WIDTH ? 'offsetWidth' : 'offsetHeight';
 
-      this._element.style[dimension] = this._element[offsetDimension] + 'px';
+      this._element.style[dimension] = this._element.getBoundingClientRect()[dimension] + 'px';
 
       Util.reflow(this._element);
 
@@ -1327,7 +1334,9 @@ var Collapse = function ($) {
    */
 
   $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    event.preventDefault();
+    if (!/input|textarea/i.test(event.target.tagName)) {
+      event.preventDefault();
+    }
 
     var target = Collapse._getTargetFromElement(this);
     var data = $(target).data(DATA_KEY);
@@ -1440,15 +1449,6 @@ var Dropdown = function ($) {
         return false;
       }
 
-      if ('ontouchstart' in document.documentElement && !$(parent).closest(Selector.NAVBAR_NAV).length) {
-
-        // if mobile we use a backdrop because click events don't delegate
-        var dropdown = document.createElement('div');
-        dropdown.className = ClassName.BACKDROP;
-        $(dropdown).insertBefore(this);
-        $(dropdown).on('click', Dropdown._clearMenus);
-      }
-
       var relatedTarget = {
         relatedTarget: this
       };
@@ -1460,6 +1460,16 @@ var Dropdown = function ($) {
         return false;
       }
 
+      // set the backdrop only if the dropdown menu will be opened
+      if ('ontouchstart' in document.documentElement && !$(parent).closest(Selector.NAVBAR_NAV).length) {
+
+        // if mobile we use a backdrop because click events don't delegate
+        var dropdown = document.createElement('div');
+        dropdown.className = ClassName.BACKDROP;
+        $(dropdown).insertBefore(this);
+        $(dropdown).on('click', Dropdown._clearMenus);
+      }
+
       this.focus();
       this.setAttribute('aria-expanded', true);
 
@@ -1506,11 +1516,6 @@ var Dropdown = function ($) {
         return;
       }
 
-      var backdrop = $(Selector.BACKDROP)[0];
-      if (backdrop) {
-        backdrop.parentNode.removeChild(backdrop);
-      }
-
       var toggles = $.makeArray($(Selector.DATA_TOGGLE));
 
       for (var i = 0; i < toggles.length; i++) {
@@ -1533,6 +1538,12 @@ var Dropdown = function ($) {
           continue;
         }
 
+        // remove backdrop only if the dropdown menu will be hidden
+        var backdrop = $(parent).find(Selector.BACKDROP)[0];
+        if (backdrop) {
+          backdrop.parentNode.removeChild(backdrop);
+        }
+
         toggles[i].setAttribute('aria-expanded', 'false');
 
         $(parent).removeClass(ClassName.SHOW).trigger($.Event(Event.HIDDEN, relatedTarget));
@@ -1702,7 +1713,8 @@ var Modal = function ($) {
     DIALOG: '.modal-dialog',
     DATA_TOGGLE: '[data-toggle="modal"]',
     DATA_DISMISS: '[data-dismiss="modal"]',
-    FIXED_CONTENT: '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top'
+    FIXED_CONTENT: '.fixed-top, .fixed-bottom, .is-fixed, .sticky-top',
+    NAVBAR_TOGGLER: '.navbar-toggler'
   };
 
   /**
@@ -1722,7 +1734,6 @@ var Modal = function ($) {
       this._isShown = false;
       this._isBodyOverflowing = false;
       this._ignoreBackdropClick = false;
-      this._isTransitioning = false;
       this._originalBodyPadding = 0;
       this._scrollbarWidth = 0;
     }
@@ -1739,12 +1750,13 @@ var Modal = function ($) {
       var _this9 = this;
 
       if (this._isTransitioning) {
-        throw new Error('Modal is transitioning');
+        return;
       }
 
       if (Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE)) {
         this._isTransitioning = true;
       }
+
       var showEvent = $.Event(Event.SHOW, {
         relatedTarget: relatedTarget
       });
@@ -1789,16 +1801,18 @@ var Modal = function ($) {
         event.preventDefault();
       }
 
-      if (this._isTransitioning) {
-        throw new Error('Modal is transitioning');
+      if (this._isTransitioning || !this._isShown) {
+        return;
       }
 
       var transition = Util.supportsTransitionEnd() && $(this._element).hasClass(ClassName.FADE);
+
       if (transition) {
         this._isTransitioning = true;
       }
 
       var hideEvent = $.Event(Event.HIDE);
+
       $(this._element).trigger(hideEvent);
 
       if (!this._isShown || hideEvent.isDefaultPrevented()) {
@@ -1818,6 +1832,7 @@ var Modal = function ($) {
       $(this._dialog).off(Event.MOUSEDOWN_DISMISS);
 
       if (transition) {
+
         $(this._element).one(Util.TRANSITION_END, function (event) {
           return _this10._hideModal(event);
         }).emulateTransitionEnd(TRANSITION_DURATION);
@@ -1838,10 +1853,13 @@ var Modal = function ($) {
       this._isShown = null;
       this._isBodyOverflowing = null;
       this._ignoreBackdropClick = null;
-      this._originalBodyPadding = null;
       this._scrollbarWidth = null;
     };
 
+    Modal.prototype.handleUpdate = function handleUpdate() {
+      this._adjustDialog();
+    };
+
     // private
 
     Modal.prototype._getConfig = function _getConfig(config) {
@@ -1923,7 +1941,7 @@ var Modal = function ($) {
 
       if (this._isShown) {
         $(window).on(Event.RESIZE, function (event) {
-          return _this14._handleUpdate(event);
+          return _this14.handleUpdate(event);
         });
       } else {
         $(window).off(Event.RESIZE);
@@ -1934,7 +1952,7 @@ var Modal = function ($) {
       var _this15 = this;
 
       this._element.style.display = 'none';
-      this._element.setAttribute('aria-hidden', 'true');
+      this._element.setAttribute('aria-hidden', true);
       this._isTransitioning = false;
       this._showBackdrop(function () {
         $(document.body).removeClass(ClassName.OPEN);
@@ -2024,10 +2042,6 @@ var Modal = function ($) {
     // todo (fat): these should probably be refactored out of modal.js
     // ----------------------------------------------------------------------
 
-    Modal.prototype._handleUpdate = function _handleUpdate() {
-      this._adjustDialog();
-    };
-
     Modal.prototype._adjustDialog = function _adjustDialog() {
       var isModalOverflowing = this._element.scrollHeight > document.documentElement.clientHeight;
 
@@ -2051,17 +2065,55 @@ var Modal = function ($) {
     };
 
     Modal.prototype._setScrollbar = function _setScrollbar() {
-      var bodyPadding = parseInt($(Selector.FIXED_CONTENT).css('padding-right') || 0, 10);
-
-      this._originalBodyPadding = document.body.style.paddingRight || '';
+      var _this17 = this;
 
       if (this._isBodyOverflowing) {
-        document.body.style.paddingRight = bodyPadding + this._scrollbarWidth + 'px';
+        // Note: DOMNode.style.paddingRight returns the actual value or '' if not set
+        //   while $(DOMNode).css('padding-right') returns the calculated value or 0 if not set
+
+        // Adjust fixed content padding
+        $(Selector.FIXED_CONTENT).each(function (index, element) {
+          var actualPadding = $(element)[0].style.paddingRight;
+          var calculatedPadding = $(element).css('padding-right');
+          $(element).data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + _this17._scrollbarWidth + 'px');
+        });
+
+        // Adjust navbar-toggler margin
+        $(Selector.NAVBAR_TOGGLER).each(function (index, element) {
+          var actualMargin = $(element)[0].style.marginRight;
+          var calculatedMargin = $(element).css('margin-right');
+          $(element).data('margin-right', actualMargin).css('margin-right', parseFloat(calculatedMargin) + _this17._scrollbarWidth + 'px');
+        });
+
+        // Adjust body padding
+        var actualPadding = document.body.style.paddingRight;
+        var calculatedPadding = $('body').css('padding-right');
+        $('body').data('padding-right', actualPadding).css('padding-right', parseFloat(calculatedPadding) + this._scrollbarWidth + 'px');
       }
     };
 
     Modal.prototype._resetScrollbar = function _resetScrollbar() {
-      document.body.style.paddingRight = this._originalBodyPadding;
+      // Restore fixed content padding
+      $(Selector.FIXED_CONTENT).each(function (index, element) {
+        var padding = $(element).data('padding-right');
+        if (typeof padding !== 'undefined') {
+          $(element).css('padding-right', padding).removeData('padding-right');
+        }
+      });
+
+      // Restore navbar-toggler margin
+      $(Selector.NAVBAR_TOGGLER).each(function (index, element) {
+        var margin = $(element).data('margin-right');
+        if (typeof margin !== 'undefined') {
+          $(element).css('margin-right', margin).removeData('margin-right');
+        }
+      });
+
+      // Restore body padding
+      var padding = $('body').data('padding-right');
+      if (typeof padding !== 'undefined') {
+        $('body').css('padding-right', padding).removeData('padding-right');
+      }
     };
 
     Modal.prototype._getScrollbarWidth = function _getScrollbarWidth() {
@@ -2069,7 +2121,7 @@ var Modal = function ($) {
       var scrollDiv = document.createElement('div');
       scrollDiv.className = ClassName.SCROLLBAR_MEASURER;
       document.body.appendChild(scrollDiv);
-      var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth;
+      var scrollbarWidth = scrollDiv.getBoundingClientRect().width - scrollDiv.clientWidth;
       document.body.removeChild(scrollDiv);
       return scrollbarWidth;
     };
@@ -2119,7 +2171,7 @@ var Modal = function ($) {
    */
 
   $(document).on(Event.CLICK_DATA_API, Selector.DATA_TOGGLE, function (event) {
-    var _this17 = this;
+    var _this18 = this;
 
     var target = void 0;
     var selector = Util.getSelectorFromElement(this);
@@ -2141,8 +2193,8 @@ var Modal = function ($) {
       }
 
       $target.one(Event.HIDDEN, function () {
-        if ($(_this17).is(':visible')) {
-          _this17.focus();
+        if ($(_this18).is(':visible')) {
+          _this18.focus();
         }
       });
     });
@@ -2209,18 +2261,15 @@ var ScrollSpy = function ($) {
   var ClassName = {
     DROPDOWN_ITEM: 'dropdown-item',
     DROPDOWN_MENU: 'dropdown-menu',
-    NAV_LINK: 'nav-link',
-    NAV: 'nav',
     ACTIVE: 'active'
   };
 
   var Selector = {
     DATA_SPY: '[data-spy="scroll"]',
     ACTIVE: '.active',
-    LIST_ITEM: '.list-item',
-    LI: 'li',
-    LI_DROPDOWN: 'li.dropdown',
+    NAV_LIST_GROUP: '.nav, .list-group',
     NAV_LINKS: '.nav-link',
+    LIST_ITEMS: '.list-group-item',
     DROPDOWN: '.dropdown',
     DROPDOWN_ITEMS: '.dropdown-item',
     DROPDOWN_TOGGLE: '.dropdown-toggle'
@@ -2239,21 +2288,21 @@ var ScrollSpy = function ($) {
 
   var ScrollSpy = function () {
     function ScrollSpy(element, config) {
-      var _this18 = this;
+      var _this19 = this;
 
       _classCallCheck(this, ScrollSpy);
 
       this._element = element;
       this._scrollElement = element.tagName === 'BODY' ? window : element;
       this._config = this._getConfig(config);
-      this._selector = this._config.target + ' ' + Selector.NAV_LINKS + ',' + (this._config.target + ' ' + Selector.DROPDOWN_ITEMS);
+      this._selector = this._config.target + ' ' + Selector.NAV_LINKS + ',' + (this._config.target + ' ' + Selector.LIST_ITEMS + ',') + (this._config.target + ' ' + Selector.DROPDOWN_ITEMS);
       this._offsets = [];
       this._targets = [];
       this._activeTarget = null;
       this._scrollHeight = 0;
 
       $(this._scrollElement).on(Event.SCROLL, function (event) {
-        return _this18._process(event);
+        return _this19._process(event);
       });
 
       this.refresh();
@@ -2265,7 +2314,7 @@ var ScrollSpy = function ($) {
     // public
 
     ScrollSpy.prototype.refresh = function refresh() {
-      var _this19 = this;
+      var _this20 = this;
 
       var autoMethod = this._scrollElement !== this._scrollElement.window ? OffsetMethod.POSITION : OffsetMethod.OFFSET;
 
@@ -2288,9 +2337,12 @@ var ScrollSpy = function ($) {
           target = $(targetSelector)[0];
         }
 
-        if (target && (target.offsetWidth || target.offsetHeight)) {
-          // todo (fat): remove sketch reliance on jQuery position/offset
-          return [$(target)[offsetMethod]().top + offsetBase, targetSelector];
+        if (target) {
+          var targetBCR = target.getBoundingClientRect();
+          if (targetBCR.width || targetBCR.height) {
+            // todo (fat): remove sketch reliance on jQuery position/offset
+            return [$(target)[offsetMethod]().top + offsetBase, targetSelector];
+          }
         }
         return null;
       }).filter(function (item) {
@@ -2298,8 +2350,8 @@ var ScrollSpy = function ($) {
       }).sort(function (a, b) {
         return a[0] - b[0];
       }).forEach(function (item) {
-        _this19._offsets.push(item[0]);
-        _this19._targets.push(item[1]);
+        _this20._offsets.push(item[0]);
+        _this20._targets.push(item[1]);
       });
     };
 
@@ -2345,7 +2397,7 @@ var ScrollSpy = function ($) {
     };
 
     ScrollSpy.prototype._getOffsetHeight = function _getOffsetHeight() {
-      return this._scrollElement === window ? window.innerHeight : this._scrollElement.offsetHeight;
+      return this._scrollElement === window ? window.innerHeight : this._scrollElement.getBoundingClientRect().height;
     };
 
     ScrollSpy.prototype._process = function _process() {
@@ -2397,9 +2449,11 @@ var ScrollSpy = function ($) {
         $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE);
         $link.addClass(ClassName.ACTIVE);
       } else {
-        // todo (fat) this is kinda sus...
-        // recursively add actives to tested nav-links
-        $link.parents(Selector.LI).find('> ' + Selector.NAV_LINKS).addClass(ClassName.ACTIVE);
+        // Set triggered link as active
+        $link.addClass(ClassName.ACTIVE);
+        // Set triggered links parents as active
+        // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
+        $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_LINKS + ', ' + Selector.LIST_ITEMS).addClass(ClassName.ACTIVE);
       }
 
       $(this._scrollElement).trigger(Event.ACTIVATE, {
@@ -2518,14 +2572,10 @@ var Tab = function ($) {
   };
 
   var Selector = {
-    A: 'a',
-    LI: 'li',
     DROPDOWN: '.dropdown',
-    LIST: 'ul:not(.dropdown-menu), ol:not(.dropdown-menu), nav:not(.dropdown-menu)',
-    FADE_CHILD: '> .nav-item .fade, > .fade',
+    NAV_LIST_GROUP: '.nav, .list-group',
     ACTIVE: '.active',
-    ACTIVE_CHILD: '> .nav-item > .active, > .active',
-    DATA_TOGGLE: '[data-toggle="tab"], [data-toggle="pill"]',
+    DATA_TOGGLE: '[data-toggle="tab"], [data-toggle="pill"], [data-toggle="list"]',
     DROPDOWN_TOGGLE: '.dropdown-toggle',
     DROPDOWN_ACTIVE_CHILD: '> .dropdown-menu .active'
   };
@@ -2548,7 +2598,7 @@ var Tab = function ($) {
     // public
 
     Tab.prototype.show = function show() {
-      var _this20 = this;
+      var _this21 = this;
 
       if (this._element.parentNode && this._element.parentNode.nodeType === Node.ELEMENT_NODE && $(this._element).hasClass(ClassName.ACTIVE) || $(this._element).hasClass(ClassName.DISABLED)) {
         return;
@@ -2556,7 +2606,7 @@ var Tab = function ($) {
 
       var target = void 0;
       var previous = void 0;
-      var listElement = $(this._element).closest(Selector.LIST)[0];
+      var listElement = $(this._element).closest(Selector.NAV_LIST_GROUP)[0];
       var selector = Util.getSelectorFromElement(this._element);
 
       if (listElement) {
@@ -2590,7 +2640,7 @@ var Tab = function ($) {
 
       var complete = function complete() {
         var hiddenEvent = $.Event(Event.HIDDEN, {
-          relatedTarget: _this20._element
+          relatedTarget: _this21._element
         });
 
         var shownEvent = $.Event(Event.SHOWN, {
@@ -2598,7 +2648,7 @@ var Tab = function ($) {
         });
 
         $(previous).trigger(hiddenEvent);
-        $(_this20._element).trigger(shownEvent);
+        $(_this21._element).trigger(shownEvent);
       };
 
       if (target) {
@@ -2616,13 +2666,13 @@ var Tab = function ($) {
     // private
 
     Tab.prototype._activate = function _activate(element, container, callback) {
-      var _this21 = this;
+      var _this22 = this;
 
-      var active = $(container).find(Selector.ACTIVE_CHILD)[0];
-      var isTransitioning = callback && Util.supportsTransitionEnd() && (active && $(active).hasClass(ClassName.FADE) || Boolean($(container).find(Selector.FADE_CHILD)[0]));
+      var active = $(container).find(Selector.ACTIVE)[0];
+      var isTransitioning = callback && Util.supportsTransitionEnd() && active && $(active).hasClass(ClassName.FADE);
 
       var complete = function complete() {
-        return _this21._transitionComplete(element, active, isTransitioning, callback);
+        return _this22._transitionComplete(element, active, isTransitioning, callback);
       };
 
       if (active && isTransitioning) {
@@ -2764,6 +2814,7 @@ var Tooltip = function ($) {
   var JQUERY_NO_CONFLICT = $.fn[NAME];
   var TRANSITION_DURATION = 150;
   var CLASS_PREFIX = 'bs-tether';
+  var TETHER_PREFIX_REGEX = new RegExp('(^|\\s)' + CLASS_PREFIX + '\\S+', 'g');
 
   var Default = {
     animation: true,
@@ -2855,7 +2906,6 @@ var Tooltip = function ($) {
       this._timeout = 0;
       this._hoverState = '';
       this._activeTrigger = {};
-      this._isTransitioning = false;
       this._tether = null;
 
       // protected
@@ -2936,7 +2986,7 @@ var Tooltip = function ($) {
     };
 
     Tooltip.prototype.show = function show() {
-      var _this22 = this;
+      var _this23 = this;
 
       if ($(this.element).css('display') === 'none') {
         throw new Error('Please use show on visible elements');
@@ -2944,9 +2994,6 @@ var Tooltip = function ($) {
 
       var showEvent = $.Event(this.constructor.Event.SHOW);
       if (this.isWithContent() && this._isEnabled) {
-        if (this._isTransitioning) {
-          throw new Error('Tooltip is transitioning');
-        }
         $(this.element).trigger(showEvent);
 
         var isInTheDom = $.contains(this.element.ownerDocument.documentElement, this.element);
@@ -2973,7 +3020,11 @@ var Tooltip = function ($) {
 
         var container = this.config.container === false ? document.body : $(this.config.container);
 
-        $(tip).data(this.constructor.DATA_KEY, this).appendTo(container);
+        $(tip).data(this.constructor.DATA_KEY, this);
+
+        if (!$.contains(this.element.ownerDocument.documentElement, this.tip)) {
+          $(tip).appendTo(container);
+        }
 
         $(this.element).trigger(this.constructor.Event.INSERTED);
 
@@ -2994,19 +3045,17 @@ var Tooltip = function ($) {
         $(tip).addClass(ClassName.SHOW);
 
         var complete = function complete() {
-          var prevHoverState = _this22._hoverState;
-          _this22._hoverState = null;
-          _this22._isTransitioning = false;
+          var prevHoverState = _this23._hoverState;
+          _this23._hoverState = null;
 
-          $(_this22.element).trigger(_this22.constructor.Event.SHOWN);
+          $(_this23.element).trigger(_this23.constructor.Event.SHOWN);
 
           if (prevHoverState === HoverState.OUT) {
-            _this22._leave(null, _this22);
+            _this23._leave(null, _this23);
           }
         };
 
         if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
-          this._isTransitioning = true;
           $(this.tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(Tooltip._TRANSITION_DURATION);
           return;
         }
@@ -3016,22 +3065,19 @@ var Tooltip = function ($) {
     };
 
     Tooltip.prototype.hide = function hide(callback) {
-      var _this23 = this;
+      var _this24 = this;
 
       var tip = this.getTipElement();
       var hideEvent = $.Event(this.constructor.Event.HIDE);
-      if (this._isTransitioning) {
-        throw new Error('Tooltip is transitioning');
-      }
       var complete = function complete() {
-        if (_this23._hoverState !== HoverState.SHOW && tip.parentNode) {
+        if (_this24._hoverState !== HoverState.SHOW && tip.parentNode) {
           tip.parentNode.removeChild(tip);
         }
 
-        _this23.element.removeAttribute('aria-describedby');
-        $(_this23.element).trigger(_this23.constructor.Event.HIDDEN);
-        _this23._isTransitioning = false;
-        _this23.cleanupTether();
+        _this24._cleanTipClass();
+        _this24.element.removeAttribute('aria-describedby');
+        $(_this24.element).trigger(_this24.constructor.Event.HIDDEN);
+        _this24.cleanupTether();
 
         if (callback) {
           callback();
@@ -3051,7 +3097,7 @@ var Tooltip = function ($) {
       this._activeTrigger[Trigger.HOVER] = false;
 
       if (Util.supportsTransitionEnd() && $(this.tip).hasClass(ClassName.FADE)) {
-        this._isTransitioning = true;
+
         $(tip).one(Util.TRANSITION_END, complete).emulateTransitionEnd(TRANSITION_DURATION);
       } else {
         complete();
@@ -3118,29 +3164,37 @@ var Tooltip = function ($) {
       return AttachmentMap[placement.toUpperCase()];
     };
 
+    Tooltip.prototype._cleanTipClass = function _cleanTipClass() {
+      var $tip = $(this.getTipElement());
+      var tabClass = $tip.attr('class').match(TETHER_PREFIX_REGEX);
+      if (tabClass !== null && tabClass.length > 0) {
+        $tip.removeClass(tabClass.join(''));
+      }
+    };
+
     Tooltip.prototype._setListeners = function _setListeners() {
-      var _this24 = this;
+      var _this25 = this;
 
       var triggers = this.config.trigger.split(' ');
 
       triggers.forEach(function (trigger) {
         if (trigger === 'click') {
-          $(_this24.element).on(_this24.constructor.Event.CLICK, _this24.config.selector, function (event) {
-            return _this24.toggle(event);
+          $(_this25.element).on(_this25.constructor.Event.CLICK, _this25.config.selector, function (event) {
+            return _this25.toggle(event);
           });
         } else if (trigger !== Trigger.MANUAL) {
-          var eventIn = trigger === Trigger.HOVER ? _this24.constructor.Event.MOUSEENTER : _this24.constructor.Event.FOCUSIN;
-          var eventOut = trigger === Trigger.HOVER ? _this24.constructor.Event.MOUSELEAVE : _this24.constructor.Event.FOCUSOUT;
+          var eventIn = trigger === Trigger.HOVER ? _this25.constructor.Event.MOUSEENTER : _this25.constructor.Event.FOCUSIN;
+          var eventOut = trigger === Trigger.HOVER ? _this25.constructor.Event.MOUSELEAVE : _this25.constructor.Event.FOCUSOUT;
 
-          $(_this24.element).on(eventIn, _this24.config.selector, function (event) {
-            return _this24._enter(event);
-          }).on(eventOut, _this24.config.selector, function (event) {
-            return _this24._leave(event);
+          $(_this25.element).on(eventIn, _this25.config.selector, function (event) {
+            return _this25._enter(event);
+          }).on(eventOut, _this25.config.selector, function (event) {
+            return _this25._leave(event);
           });
         }
 
-        $(_this24.element).closest('.modal').on('hide.bs.modal', function () {
-          return _this24.hide();
+        $(_this25.element).closest('.modal').on('hide.bs.modal', function () {
+          return _this25.hide();
         });
       });
 
@@ -3251,6 +3305,14 @@ var Tooltip = function ($) {
         };
       }
 
+      if (config.title && typeof config.title === 'number') {
+        config.title = config.title.toString();
+      }
+
+      if (config.content && typeof config.content === 'number') {
+        config.content = config.content.toString();
+      }
+
       Util.typeCheckConfig(NAME, config, this.constructor.DefaultType);
 
       return config;