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

   * Bootstrap: dropdown.js v3.3.7

   * http://getbootstrap.com/javascript/#dropdowns
   * ========================================================================

   * Copyright 2011-2016 Twitter, Inc.
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/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.VERSION = '3.3.7'
  
    function getParent($this) {
      var selector = $this.attr('data-target')
  
      if (!selector) {
        selector = $this.attr('href')
        selector = selector && /#[A-Za-z]/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
      }
  
      var $parent = selector && $(selector)
  
      return $parent && $parent.length ? $parent : $this.parent()
    }
  
    function clearMenus(e) {
      if (e && e.which === 3) return
      $(backdrop).remove()
      $(toggle).each(function () {
        var $this         = $(this)
        var $parent       = getParent($this)
        var relatedTarget = { relatedTarget: this }
  
        if (!$parent.hasClass('open')) return
  
        if (e && e.type == 'click' && /input|textarea/i.test(e.target.tagName) && $.contains($parent[0], e.target)) return
  
        $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))
  
        if (e.isDefaultPrevented()) return
  
        $this.attr('aria-expanded', 'false')
        $parent.removeClass('open').trigger($.Event('hidden.bs.dropdown', relatedTarget))
      })
    }

    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

          $(document.createElement('div'))
            .addClass('dropdown-backdrop')
            .insertAfter($(this))
            .on('click', clearMenus)

        }

        var relatedTarget = { relatedTarget: this }
        $parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget))

  
        if (e.isDefaultPrevented()) return

        $this
          .trigger('focus')
          .attr('aria-expanded', 'true')

        $parent
          .toggleClass('open')

          .trigger($.Event('shown.bs.dropdown', relatedTarget))

      }
  
      return false
    }
  
    Dropdown.prototype.keydown = function (e) {

      if (!/(38|40|27|32)/.test(e.which) || /input|textarea/i.test(e.target.tagName)) 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 && e.which != 27 || isActive && e.which == 27) {
        if (e.which == 27) $parent.find(toggle).trigger('focus')
        return $this.trigger('click')

      }

      var desc = ' li:not(.disabled):visible a'
      var $items = $parent.find('.dropdown-menu' + desc)

  
      if (!$items.length) return

      var index = $items.index(e.target)

      if (e.which == 38 && index > 0)                 index--         // up
      if (e.which == 40 && index < $items.length - 1) index++         // down
      if (!~index)                                    index = 0

      $items.eq(index).trigger('focus')

    }
  
  
    // DROPDOWN PLUGIN DEFINITION
    // ==========================

    function Plugin(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)
      })
    }

    var old = $.fn.dropdown
  
    $.fn.dropdown             = Plugin

    $.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, Dropdown.prototype.keydown)
      .on('keydown.bs.dropdown.data-api', '.dropdown-menu', Dropdown.prototype.keydown)

  
  }(jQuery);