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

 * 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);