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1 /* ========================================================================
2 * Bootstrap: dropdown.js v3.1.0
3 * http://getbootstrap.com/javascript/#dropdowns
4 * ========================================================================
5 * Copyright 2011-2014 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.prototype.toggle = function (e) {
23 var $this = $(this)
24
25 if ($this.is('.disabled, :disabled')) return
26
27 var $parent = getParent($this)
28 var isActive = $parent.hasClass('open')
29
30 clearMenus()
31
32 if (!isActive) {
33 if ('ontouchstart' in document.documentElement && !$parent.closest('.navbar-nav').length) {
34 // if mobile we use a backdrop because click events don't delegate
35 $('<div class="dropdown-backdrop"/>').insertAfter($(this)).on('click', clearMenus)
36 }
37
38 var relatedTarget = { relatedTarget: this }
39 $parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget))
40
41 if (e.isDefaultPrevented()) return
42
43 $parent
44 .toggleClass('open')
45 .trigger('shown.bs.dropdown', relatedTarget)
46
47 $this.focus()
48 }
49
50 return false
51 }
52
53 Dropdown.prototype.keydown = function (e) {
54 if (!/(38|40|27)/.test(e.keyCode)) return
55
56 var $this = $(this)
57
58 e.preventDefault()
59 e.stopPropagation()
60
61 if ($this.is('.disabled, :disabled')) return
62
63 var $parent = getParent($this)
64 var isActive = $parent.hasClass('open')
65
66 if (!isActive || (isActive && e.keyCode == 27)) {
67 if (e.which == 27) $parent.find(toggle).focus()
68 return $this.click()
69 }
70
71 var desc = ' li:not(.divider):visible a'
72 var $items = $parent.find('[role=menu]' + desc + ', [role=listbox]' + desc)
73
74 if (!$items.length) return
75
76 var index = $items.index($items.filter(':focus'))
77
78 if (e.keyCode == 38 && index > 0) index-- // up
79 if (e.keyCode == 40 && index < $items.length - 1) index++ // down
80 if (!~index) index = 0
81
82 $items.eq(index).focus()
83 }
84
85 function clearMenus(e) {
86 $(backdrop).remove()
87 $(toggle).each(function () {
88 var $parent = getParent($(this))
89 var relatedTarget = { relatedTarget: this }
90 if (!$parent.hasClass('open')) return
91 $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))
92 if (e.isDefaultPrevented()) return
93 $parent.removeClass('open').trigger('hidden.bs.dropdown', relatedTarget)
94 })
95 }
96
97 function getParent($this) {
98 var selector = $this.attr('data-target')
99
100 if (!selector) {
101 selector = $this.attr('href')
102 selector = selector && /#[A-Za-z]/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
103 }
104
105 var $parent = selector && $(selector)
106
107 return $parent && $parent.length ? $parent : $this.parent()
108 }
109
110
111 // DROPDOWN PLUGIN DEFINITION
112 // ==========================
113
114 var old = $.fn.dropdown
115
116 $.fn.dropdown = function (option) {
117 return this.each(function () {
118 var $this = $(this)
119 var data = $this.data('bs.dropdown')
120
121 if (!data) $this.data('bs.dropdown', (data = new Dropdown(this)))
122 if (typeof option == 'string') data[option].call($this)
123 })
124 }
125
126 $.fn.dropdown.Constructor = Dropdown
127
128
129 // DROPDOWN NO CONFLICT
130 // ====================
131
132 $.fn.dropdown.noConflict = function () {
133 $.fn.dropdown = old
134 return this
135 }
136
137
138 // APPLY TO STANDARD DROPDOWN ELEMENTS
139 // ===================================
140
141 $(document)
142 .on('click.bs.dropdown.data-api', clearMenus)
143 .on('click.bs.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
144 .on('click.bs.dropdown.data-api', toggle, Dropdown.prototype.toggle)
145 .on('keydown.bs.dropdown.data-api', toggle + ', [role=menu], [role=listbox]', Dropdown.prototype.keydown)
146
147 }(Zepto);
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