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