1 /* ============================================================
2 * bootstrap-dropdown.js v2.3.2
3 * http://getbootstrap.com/2.3.2/javascript.html#dropdowns
4 * ============================================================
5 * Copyright 2013 Twitter, Inc.
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
11 * http://www.apache.org/licenses/LICENSE-2.0
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 * ============================================================ */
23 "use strict"; // jshint ;_;
26 /* DROPDOWN CLASS DEFINITION
27 * ========================= */
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 $el.parent().removeClass('open')
37 Dropdown.prototype = {
41 , toggle: function (e) {
46 if ($this.is('.disabled, :disabled')) return
48 $parent = getParent($this)
50 isActive = $parent.hasClass('open')
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)
59 $parent.toggleClass('open')
67 , keydown: function (e) {
75 if (!/(38|40|27)/.test(e.keyCode)) return
82 if ($this.is('.disabled, :disabled')) return
84 $parent = getParent($this)
86 isActive = $parent.hasClass('open')
88 if (!isActive || (isActive && e.keyCode == 27)) {
89 if (e.which == 27) $parent.find(toggle).focus()
93 $items = $('[role=menu] li:not(.divider):visible a', $parent)
95 if (!$items.length) return
97 index = $items.index($items.filter(':focus'))
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
110 function clearMenus() {
111 $('.dropdown-backdrop').remove()
112 $(toggle).each(function () {
113 getParent($(this)).removeClass('open')
117 function getParent($this) {
118 var selector = $this.attr('data-target')
122 selector = $this.attr('href')
123 selector = selector && /#/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
126 $parent = selector && $(selector)
128 if (!$parent || !$parent.length) $parent = $this.parent()
134 /* DROPDOWN PLUGIN DEFINITION
135 * ========================== */
137 var old = $.fn.dropdown
139 $.fn.dropdown = function (option) {
140 return this.each(function () {
142 , data = $this.data('dropdown')
143 if (!data) $this.data('dropdown', (data = new Dropdown(this)))
144 if (typeof option == 'string') data[option].call($this)
148 $.fn.dropdown.Constructor = Dropdown
151 /* DROPDOWN NO CONFLICT
152 * ==================== */
154 $.fn.dropdown.noConflict = function () {
160 /* APPLY TO STANDARD DROPDOWN ELEMENTS
161 * =================================== */
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)