1 /* ========================================================================
2 * Bootstrap: dropdown.js v3.3.7
3 * http://getbootstrap.com/javascript/#dropdowns
4 * ========================================================================
5 * Copyright 2011-2016 Twitter, Inc.
6 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
7 * ======================================================================== */
13 // DROPDOWN CLASS DEFINITION
14 // =========================
16 var backdrop = '.dropdown-backdrop'
17 var toggle = '[data-toggle="dropdown"]'
18 var Dropdown = function (element) {
19 $(element).on('click.bs.dropdown', this.toggle)
22 Dropdown.VERSION = '3.3.7'
24 function getParent($this) {
25 var selector = $this.attr('data-target')
28 selector = $this.attr('href')
29 selector = selector && /#[A-Za-z]/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
32 var $parent = selector && $(selector)
34 return $parent && $parent.length ? $parent : $this.parent()
37 function clearMenus(e) {
38 if (e && e.which === 3) return
40 $(toggle).each(function () {
42 var $parent = getParent($this)
43 var relatedTarget = { relatedTarget: this }
45 if (!$parent.hasClass('open')) return
47 if (e && e.type == 'click' && /input|textarea/i.test(e.target.tagName) && $.contains($parent[0], e.target)) return
49 $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))
51 if (e.isDefaultPrevented()) return
53 $this.attr('aria-expanded', 'false')
54 $parent.removeClass('open').trigger($.Event('hidden.bs.dropdown', relatedTarget))
58 Dropdown.prototype.toggle = function (e) {
61 if ($this.is('.disabled, :disabled')) return
63 var $parent = getParent($this)
64 var isActive = $parent.hasClass('open')
69 if ('ontouchstart' in document.documentElement && !$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')
74 .on('click', clearMenus)
77 var relatedTarget = { relatedTarget: this }
78 $parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget))
80 if (e.isDefaultPrevented()) return
84 .attr('aria-expanded', 'true')
88 .trigger($.Event('shown.bs.dropdown', relatedTarget))
94 Dropdown.prototype.keydown = function (e) {
95 if (!/(38|40|27|32)/.test(e.which) || /input|textarea/i.test(e.target.tagName)) return
102 if ($this.is('.disabled, :disabled')) return
104 var $parent = getParent($this)
105 var isActive = $parent.hasClass('open')
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')
112 var desc = ' li:not(.disabled):visible a'
113 var $items = $parent.find('.dropdown-menu' + desc)
115 if (!$items.length) return
117 var index = $items.index(e.target)
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
123 $items.eq(index).trigger('focus')
127 // DROPDOWN PLUGIN DEFINITION
128 // ==========================
130 function Plugin(option) {
131 return this.each(function () {
133 var data = $this.data('bs.dropdown')
135 if (!data) $this.data('bs.dropdown', (data = new Dropdown(this)))
136 if (typeof option == 'string') data[option].call($this)
140 var old = $.fn.dropdown
142 $.fn.dropdown = Plugin
143 $.fn.dropdown.Constructor = Dropdown
146 // DROPDOWN NO CONFLICT
147 // ====================
149 $.fn.dropdown.noConflict = function () {
155 // APPLY TO STANDARD DROPDOWN ELEMENTS
156 // ===================================
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)