scala-news-reader
rss/atom news reader in scala
git clone https://9o.is/git/scala-news-reader.git
bootstrap-dropdown.js
(4413B)
1 /* ============================================================
2 * bootstrap-dropdown.js v2.3.2
3 * http://twitter.github.com/bootstrap/javascript.html#dropdowns
4 * ============================================================
5 * Copyright 2012 Twitter, Inc.
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============================================================ */
19
20
21 !function ($) {
22
23 "use strict"; // jshint ;_;
24
25
26 /* DROPDOWN CLASS DEFINITION
27 * ========================= */
28
29 var toggle = '[data-toggle=dropdown]'
30 , Dropdown = function (element) {
31 var $el = $(element).on('click.dropdown.data-api', this.toggle)
32 $('html').on('click.dropdown.data-api', function () {
33 $el.parent().removeClass('open')
34 })
35 }
36
37 Dropdown.prototype = {
38
39 constructor: Dropdown
40
41 , toggle: function (e) {
42 var $this = $(this)
43 , $parent
44 , isActive
45
46 if ($this.is('.disabled, :disabled')) return
47
48 $parent = getParent($this)
49
50 isActive = $parent.hasClass('open')
51
52 clearMenus()
53
54 if (!isActive) {
55 if ('ontouchstart' in document.documentElement) {
56 // if mobile we we use a backdrop because click events don't delegate
57 $('<div class="dropdown-backdrop"/>').insertBefore($(this)).on('click', clearMenus)
58 }
59 $parent.toggleClass('open')
60 }
61
62 $this.focus()
63
64 return false
65 }
66
67 , keydown: function (e) {
68 var $this
69 , $items
70 , $active
71 , $parent
72 , isActive
73 , index
74
75 if (!/(38|40|27)/.test(e.keyCode)) return
76
77 $this = $(this)
78
79 e.preventDefault()
80 e.stopPropagation()
81
82 if ($this.is('.disabled, :disabled')) return
83
84 $parent = getParent($this)
85
86 isActive = $parent.hasClass('open')
87
88 if (!isActive || (isActive && e.keyCode == 27)) {
89 if (e.which == 27) $parent.find(toggle).focus()
90 return $this.click()
91 }
92
93 $items = $('[role=menu] li:not(.divider):visible a', $parent)
94
95 if (!$items.length) return
96
97 index = $items.index($items.filter(':focus'))
98
99 if (e.keyCode == 38 && index > 0) index-- // up
100 if (e.keyCode == 40 && index < $items.length - 1) index++ // down
101 if (!~index) index = 0
102
103 $items
104 .eq(index)
105 .focus()
106 }
107
108 }
109
110 function clearMenus() {
111 $('.dropdown-backdrop').remove()
112 $(toggle).each(function () {
113 getParent($(this)).removeClass('open')
114 })
115 }
116
117 function getParent($this) {
118 var selector = $this.attr('data-target')
119 , $parent
120
121 if (!selector) {
122 selector = $this.attr('href')
123 selector = selector && /#/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
124 }
125
126 $parent = selector && $(selector)
127
128 if (!$parent || !$parent.length) $parent = $this.parent()
129
130 return $parent
131 }
132
133
134 /* DROPDOWN PLUGIN DEFINITION
135 * ========================== */
136
137 var old = $.fn.dropdown
138
139 $.fn.dropdown = function (option) {
140 return this.each(function () {
141 var $this = $(this)
142 , data = $this.data('dropdown')
143 if (!data) $this.data('dropdown', (data = new Dropdown(this)))
144 if (typeof option == 'string') data[option].call($this)
145 })
146 }
147
148 $.fn.dropdown.Constructor = Dropdown
149
150
151 /* DROPDOWN NO CONFLICT
152 * ==================== */
153
154 $.fn.dropdown.noConflict = function () {
155 $.fn.dropdown = old
156 return this
157 }
158
159
160 /* APPLY TO STANDARD DROPDOWN ELEMENTS
161 * =================================== */
162
163 $(document)
164 .on('click.dropdown.data-api', clearMenus)
165 .on('click.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
166 .on('click.dropdown.data-api' , toggle, Dropdown.prototype.toggle)
167 .on('keydown.dropdown.data-api', toggle + ', [role=menu]' , Dropdown.prototype.keydown)
168
169 }(window.jQuery);