1/* ============================================================
2 * bootstrap-dropdown.js v2.3.1
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        $parent.toggleClass('open')
56      }
57
58      $this.focus()
59
60      return false
61    }
62
63  , keydown: function (e) {
64      var $this
65        , $items
66        , $active
67        , $parent
68        , isActive
69        , index
70
71      if (!/(38|40|27)/.test(e.keyCode)) return
72
73      $this = $(this)
74
75      e.preventDefault()
76      e.stopPropagation()
77
78      if ($this.is('.disabled, :disabled')) return
79
80      $parent = getParent($this)
81
82      isActive = $parent.hasClass('open')
83
84      if (!isActive || (isActive && e.keyCode == 27)) {
85        if (e.which == 27) $parent.find(toggle).focus()
86        return $this.click()
87      }
88
89      $items = $('[role=menu] li:not(.divider):visible a', $parent)
90
91      if (!$items.length) return
92
93      index = $items.index($items.filter(':focus'))
94
95      if (e.keyCode == 38 && index > 0) index--                                        // up
96      if (e.keyCode == 40 && index < $items.length - 1) index++                        // down
97      if (!~index) index = 0
98
99      $items
100        .eq(index)
101        .focus()
102    }
103
104  }
105
106  function clearMenus() {
107    $(toggle).each(function () {
108      getParent($(this)).removeClass('open')
109    })
110  }
111
112  function getParent($this) {
113    var selector = $this.attr('data-target')
114      , $parent
115
116    if (!selector) {
117      selector = $this.attr('href')
118      selector = selector && /#/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') //strip for ie7
119    }
120
121    $parent = selector && $(selector)
122
123    if (!$parent || !$parent.length) $parent = $this.parent()
124
125    return $parent
126  }
127
128
129  /* DROPDOWN PLUGIN DEFINITION
130   * ========================== */
131
132  var old = $.fn.dropdown
133
134  $.fn.dropdown = function (option) {
135    return this.each(function () {
136      var $this = $(this)
137        , data = $this.data('dropdown')
138      if (!data) $this.data('dropdown', (data = new Dropdown(this)))
139      if (typeof option == 'string') data[option].call($this)
140    })
141  }
142
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.dropdown.data-api', clearMenus)
160    .on('click.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
161    .on('click.dropdown-menu', function (e) { e.stopPropagation() })
162    .on('click.dropdown.data-api'  , toggle, Dropdown.prototype.toggle)
163    .on('keydown.dropdown.data-api', toggle + ', [role=menu]' , Dropdown.prototype.keydown)
164
165}(window.jQuery);
166