4 * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
5 * Dual licensed under the MIT (MIT-LICENSE.txt)
6 * and GPL (GPL-LICENSE.txt) licenses.
8 * http://docs.jquery.com/UI
13 // prevent duplicate loading
14 // this is only a problem because we proxy existing functions
15 // and we don't want to double proxy them
21 //Helper functions and ui object
25 // $.ui.plugin is deprecated. Use the proxy pattern instead.
27 add: function(module, option, set) {
28 var proto = $.ui[module].prototype;
30 proto.plugins[i] = proto.plugins[i] || [];
31 proto.plugins[i].push([option, set[i]]);
34 call: function(instance, name, args) {
35 var set = instance.plugins[name];
36 if(!set || !instance.element[0].parentNode) { return; }
38 for (var i = 0; i < set.length; i++) {
39 if (instance.options[set[i][0]]) {
40 set[i][1].apply(instance.element, args);
46 contains: function(a, b) {
47 return document.compareDocumentPosition
48 ? a.compareDocumentPosition(b) & 16
49 : a !== b && a.contains(b);
52 hasScroll: function(el, a) {
54 //If overflow is hidden, the element might have extra content, but the user wants to hide it
55 if ($(el).css('overflow') == 'hidden') { return false; }
57 var scroll = (a && a == 'left') ? 'scrollLeft' : 'scrollTop',
60 if (el[scroll] > 0) { return true; }
62 // TODO: determine which cases actually cause this to happen
63 // if the element doesn't have the scroll set, see if it's possible to
66 has = (el[scroll] > 0);
71 isOverAxis: function(x, reference, size) {
72 //Determines when x coordinate is over "b" element axis
73 return (x > reference) && (x < (reference + size));
76 isOver: function(y, x, top, left, height, width) {
77 //Determines when x, y coordinates is over "b" element
78 return $.ui.isOverAxis(y, top, height) && $.ui.isOverAxis(x, left, width);
87 COMMAND_LEFT: 91, // COMMAND
98 MENU: 93, // COMMAND_RIGHT
103 NUMPAD_MULTIPLY: 106,
104 NUMPAD_SUBTRACT: 109,
113 WINDOWS: 91 // COMMAND
120 focus: function(delay, fn) {
121 return typeof delay === 'number'
122 ? this.each(function() {
124 setTimeout(function() {
126 (fn && fn.call(elem));
129 : this._focus.apply(this, arguments);
132 enableSelection: function() {
134 .attr('unselectable', 'off')
135 .css('MozUserSelect', '');
138 disableSelection: function() {
140 .attr('unselectable', 'on')
141 .css('MozUserSelect', 'none');
144 scrollParent: function() {
146 if(($.browser.msie && (/(static|relative)/).test(this.css('position'))) || (/absolute/).test(this.css('position'))) {
147 scrollParent = this.parents().filter(function() {
148 return (/(relative|absolute|fixed)/).test($.curCSS(this,'position',1)) && (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
151 scrollParent = this.parents().filter(function() {
152 return (/(auto|scroll)/).test($.curCSS(this,'overflow',1)+$.curCSS(this,'overflow-y',1)+$.curCSS(this,'overflow-x',1));
156 return (/fixed/).test(this.css('position')) || !scrollParent.length ? $(document) : scrollParent;
159 zIndex: function(zIndex) {
160 if (zIndex !== undefined) {
161 return this.css('zIndex', zIndex);
165 var elem = $(this[0]), position, value;
166 while (elem.length && elem[0] !== document) {
167 // Ignore z-index if position is set to a value where z-index is ignored by the browser
168 // This makes behavior of this function consistent across browsers
169 // WebKit always returns auto if the element is positioned
170 position = elem.css('position');
171 if (position == 'absolute' || position == 'relative' || position == 'fixed')
173 // IE returns 0 when zIndex is not specified
174 // other browsers return a string
175 // we ignore the case of nested elements with an explicit value of 0
176 // <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
177 value = parseInt(elem.css('zIndex'));
178 if (!isNaN(value) && value != 0) {
182 elem = elem.parent();
191 //Additional selectors
192 $.extend($.expr[':'], {
193 data: function(elem, i, match) {
194 return !!$.data(elem, match[3]);
197 focusable: function(element) {
198 var nodeName = element.nodeName.toLowerCase(),
199 tabIndex = $.attr(element, 'tabindex');
200 return (/input|select|textarea|button|object/.test(nodeName)
202 : 'a' == nodeName || 'area' == nodeName
203 ? element.href || !isNaN(tabIndex)
205 // the element and all of its ancestors must be visible
206 // the browser may report that the area is hidden
207 && !$(element)['area' == nodeName ? 'parents' : 'closest'](':hidden').length;
210 tabbable: function(element) {
211 var tabIndex = $.attr(element, 'tabindex');
212 return (isNaN(tabIndex) || tabIndex >= 0) && $(element).is(':focusable');