/* ========================================================================
   * Bootstrap: dropdown.js v3.0.3
   * http://getbootstrap.com/javascript/#dropdowns
   * ========================================================================
   * Copyright 2013 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";
  
    // DROPDOWN CLASS DEFINITION
    // =========================
  
    var backdrop = '.dropdown-backdrop'
    var toggle   = '[data-toggle=dropdown]'
    var Dropdown = function (element) {
      $(element).on('click.bs.dropdown', this.toggle)
    }
  
    Dropdown.prototype.toggle = function (e) {
      var $this = $(this)
  
      if ($this.is('.disabled, :disabled')) return
  
      var $parent  = getParent($this)
      var isActive = $parent.hasClass('open')
  
      clearMenus()
  
      if (!isActive) {
        if ('ontouchstart' in document.documentElement && !$parent.closest('.navbar-nav').length) {
          // if mobile we use a backdrop because click events don't delegate
          $('<div class="dropdown-backdrop"/>').insertAfter($(this)).on('click', clearMenus)
        }
  
        $parent.trigger(e = $.Event('show.bs.dropdown'))
  
        if (e.isDefaultPrevented()) return
  
        $parent
          .toggleClass('open')
          .trigger('shown.bs.dropdown')
  
        $this.focus()
      }
  
      return false
    }
  
    Dropdown.prototype.keydown = function (e) {
      if (!/(38|40|27)/.test(e.keyCode)) return
  
      var $this = $(this)
  
      e.preventDefault()
      e.stopPropagation()
  
      if ($this.is('.disabled, :disabled')) return
  
      var $parent  = getParent($this)
      var isActive = $parent.hasClass('open')
  
      if (!isActive || (isActive && e.keyCode == 27)) {
        if (e.which == 27) $parent.find(toggle).focus()
        return $this.click()
      }
  
      var $items = $('[role=menu] li:not(.divider):visible a', $parent)
  
      if (!$items.length) return
  
      var index = $items.index($items.filter(':focus'))
  
      if (e.keyCode == 38 && index > 0)                 index--                        // up
      if (e.keyCode == 40 && index < $items.length - 1) index++                        // down
      if (!~index)                                      index=0
  
      $items.eq(index).focus()
    }
  
    function clearMenus() {
      $(backdrop).remove()
      $(toggle).each(function (e) {
        var $parent = getParent($(this))
        if (!$parent.hasClass('open')) return
        $parent.trigger(e = $.Event('hide.bs.dropdown'))
        if (e.isDefaultPrevented()) return
        $parent.removeClass('open').trigger('hidden.bs.dropdown')
      })
    }
  
    function getParent($this) {
      var selector = $this.attr('data-target')
  
      if (!selector) {
        selector = $this.attr('href')
        selector = selector && /#/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
      }
  
      var $parent = selector && $(selector)
  
      return $parent && $parent.length ? $parent : $this.parent()
    }
  
  
    // DROPDOWN PLUGIN DEFINITION
    // ==========================
  
    var old = $.fn.dropdown
  
    $.fn.dropdown = function (option) {
      return this.each(function () {
        var $this = $(this)
        var data  = $this.data('bs.dropdown')
  
        if (!data) $this.data('bs.dropdown', (data = new Dropdown(this)))
        if (typeof option == 'string') data[option].call($this)
      })
    }
  
    $.fn.dropdown.Constructor = Dropdown
  
  
    // DROPDOWN NO CONFLICT
    // ====================
  
    $.fn.dropdown.noConflict = function () {
      $.fn.dropdown = old
      return this
    }
  
  
    // APPLY TO STANDARD DROPDOWN ELEMENTS
    // ===================================
  
    $(document)
      .on('click.bs.dropdown.data-api', clearMenus)
      .on('click.bs.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
      .on('click.bs.dropdown.data-api'  , toggle, Dropdown.prototype.toggle)
      .on('keydown.bs.dropdown.data-api', toggle + ', [role=menu]' , Dropdown.prototype.keydown)
  
  }(jQuery);