/* ========================================================

  * bootstrap-tab.js v2.3.1

  * http://twitter.github.com/bootstrap/javascript.html#tabs

  * ========================================================

  * Copyright 2012 Twitter, Inc.

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  * http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  * ======================================================== */

 !function ($) {

   "use strict"; // jshint ;_;

  /* TAB CLASS DEFINITION

   * ==================== */

   var Tab = function (element) {

     this.element = $(element)

   }

   Tab.prototype = {

     constructor: Tab

   , show: function () {

       var $this = this.element

         , $ul = $this.closest('ul:not(.dropdown-menu)')

         , selector = $this.attr('data-target')

         , previous

         , $target

         , e

       if (!selector) {

         selector = $this.attr('href')

         selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7

       }

       if ( $this.parent('li').hasClass('active') ) return

       previous = $ul.find('.active:last a')[0]

       e = $.Event('show', {

         relatedTarget: previous

       })

       $this.trigger(e)

       if (e.isDefaultPrevented()) return

       $target = $(selector)

       this.activate($this.parent('li'), $ul)

       this.activate($target, $target.parent(), function () {

         $this.trigger({

           type: 'shown'

         , relatedTarget: previous

         })

       })

     }

   , activate: function ( element, container, callback) {

       var $active = container.find('> .active')

         , transition = callback

             && $.support.transition

             && $active.hasClass('fade')

       function next() {

         $active

           .removeClass('active')

           .find('> .dropdown-menu > .active')

           .removeClass('active')

         element.addClass('active')

         if (transition) {

           element[0].offsetWidth // reflow for transition

           element.addClass('in')

         } else {

           element.removeClass('fade')

         }

         if ( element.parent('.dropdown-menu') ) {

           element.closest('li.dropdown').addClass('active')

         }

         callback && callback()

       }

       transition ?

         $active.one($.support.transition.end, next) :

         next()

       $active.removeClass('in')

     }

   }

  /* TAB PLUGIN DEFINITION

   * ===================== */

   var old = $.fn.tab

   $.fn.tab = function ( option ) {

     return this.each(function () {

       var $this = $(this)

         , data = $this.data('tab')

       if (!data) $this.data('tab', (data = new Tab(this)))

       if (typeof option == 'string') data[option]()

     })

   }

   $.fn.tab.Constructor = Tab

  /* TAB NO CONFLICT

   * =============== */

   $.fn.tab.noConflict = function () {

     $.fn.tab = old

     return this

   }

  /* TAB DATA-API

   * ============ */

   $(document).on('click.tab.data-api', '[data-toggle="tab"], [data-toggle="pill"]', function (e) {

     e.preventDefault()

     $(this).tab('show')

   })

 }(window.jQuery);