1 /* ========================================================================

     2  * Bootstrap: dropdown.js v3.3.5

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

     4  * ========================================================================

     5  * Copyright 2011-2015 Twitter, Inc.

     6  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)

     7  * ======================================================================== */

     8 

     9 

    10 +function ($) {

    11   'use strict';

    12 

    13   // DROPDOWN CLASS DEFINITION

    14   // =========================

    15 

    16   var backdrop = '.dropdown-backdrop'

    17   var toggle   = '[data-toggle="dropdown"]'

    18   var Dropdown = function (element) {

    19     $(element).on('click.bs.dropdown', this.toggle)

    20   }

    21 

    22   Dropdown.VERSION = '3.3.5'

    23 

    24   function getParent($this) {

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

    26 

    27     if (!selector) {

    28       selector = $this.attr('href')

    29       selector = selector && /#[A-Za-z]/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7

    30     }

    31 

    32     var $parent = selector && $(selector)

    33 

    34     return $parent && $parent.length ? $parent : $this.parent()

    35   }

    36 

    37   function clearMenus(e) {

    38     if (e && e.which === 3) return

    39     $(backdrop).remove()

    40     $(toggle).each(function () {

    41       var $this         = $(this)

    42       var $parent       = getParent($this)

    43       var relatedTarget = { relatedTarget: this }

    44 

    45       if (!$parent.hasClass('open')) return

    46 

    47       if (e && e.type == 'click' && /input|textarea/i.test(e.target.tagName) && $.contains($parent[0], e.target)) return

    48 

    49       $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))

    50 

    51       if (e.isDefaultPrevented()) return

    52 

    53       $this.attr('aria-expanded', 'false')

    54       $parent.removeClass('open').trigger('hidden.bs.dropdown', relatedTarget)

    55     })

    56   }

    57 

    58   Dropdown.prototype.toggle = function (e) {

    59     var $this = $(this)

    60 

    61     if ($this.is('.disabled, :disabled')) return

    62 

    63     var $parent  = getParent($this)

    64     var isActive = $parent.hasClass('open')

    65 

    66     clearMenus()

    67 

    68     if (!isActive) {

    69       if ('ontouchstart' in document.documentElement && !$parent.closest('.navbar-nav').length) {

    70         // if mobile we use a backdrop because click events don't delegate

    71         $(document.createElement('div'))

    72           .addClass('dropdown-backdrop')

    73           .insertAfter($(this))

    74           .on('click', clearMenus)

    75       }

    76 

    77       var relatedTarget = { relatedTarget: this }

    78       $parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget))

    79 

    80       if (e.isDefaultPrevented()) return

    81 

    82       $this

    83         .trigger('focus')

    84         .attr('aria-expanded', 'true')

    85 

    86       $parent

    87         .toggleClass('open')

    88         .trigger('shown.bs.dropdown', relatedTarget)

    89     }

    90 

    91     return false

    92   }

    93 

    94   Dropdown.prototype.keydown = function (e) {

    95     if (!/(38|40|27|32)/.test(e.which) || /input|textarea/i.test(e.target.tagName)) return

    96 

    97     var $this = $(this)

    98 

    99     e.preventDefault()

   100     e.stopPropagation()

   101 

   102     if ($this.is('.disabled, :disabled')) return

   103 

   104     var $parent  = getParent($this)

   105     var isActive = $parent.hasClass('open')

   106 

   107     if (!isActive && e.which != 27 || isActive && e.which == 27) {

   108       if (e.which == 27) $parent.find(toggle).trigger('focus')

   109       return $this.trigger('click')

   110     }

   111 

   112     var desc = ' li:not(.disabled):visible a'

   113     var $items = $parent.find('.dropdown-menu' + desc)

   114 

   115     if (!$items.length) return

   116 

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

   118 

   119     if (e.which == 38 && index > 0)                 index--         // up

   120     if (e.which == 40 && index < $items.length - 1) index++         // down

   121     if (!~index)                                    index = 0

   122 

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

   124   }

   125 

   126 

   127   // DROPDOWN PLUGIN DEFINITION

   128   // ==========================

   129 

   130   function Plugin(option) {

   131     return this.each(function () {

   132       var $this = $(this)

   133       var data  = $this.data('bs.dropdown')

   134 

   135       if (!data) $this.data('bs.dropdown', (data = new Dropdown(this)))

   136       if (typeof option == 'string') data[option].call($this)

   137     })

   138   }

   139 

   140   var old = $.fn.dropdown

   141 

   142   $.fn.dropdown             = Plugin

   143   $.fn.dropdown.Constructor = Dropdown

   144 

   145 

   146   // DROPDOWN NO CONFLICT

   147   // ====================

   148 

   149   $.fn.dropdown.noConflict = function () {

   150     $.fn.dropdown = old

   151     return this

   152   }

   153 

   154 

   155   // APPLY TO STANDARD DROPDOWN ELEMENTS

   156   // ===================================

   157 

   158   $(document)

   159     .on('click.bs.dropdown.data-api', clearMenus)

   160     .on('click.bs.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })

   161     .on('click.bs.dropdown.data-api', toggle, Dropdown.prototype.toggle)

   162     .on('keydown.bs.dropdown.data-api', toggle, Dropdown.prototype.keydown)

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

   164 

   165 }(jQuery);