source: trunk/admin/temi/facebook/menu/csshover.htc@ 364

Last change on this file since 364 was 2, checked in by root, 15 years ago

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File size: 4.2 KB
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1<attach event="ondocumentready" handler="parseStylesheets" />
2<script>
3/**
4 * Whatever:hover - V1.42.060206 - hover & active
5 * ------------------------------------------------------------
6 * (c) 2005 - Peter Nederlof
7 * Peterned - http://www.xs4all.nl/~peterned/
8 * License - http://creativecommons.org/licenses/LGPL/2.1/
9 *
10 * Whatever:hover is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * Whatever:hover is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * Credits and thanks to:
21 * Arnoud Berendsen, Martin Reurings, Robert Hanson
22 *
23 * howto: body { behavior:url("csshover.htc"); }
24 * ------------------------------------------------------------
25 */
26
27var csshoverReg = /(^|\s)(([^a]([^ ]+)?)|(a([^#.][^ ]+)+)):(hover|active)/i,
28currentSheet, doc = window.document, hoverEvents = [], activators = {
29 onhover:{on:'onmouseover', off:'onmouseout'},
30 onactive:{on:'onmousedown', off:'onmouseup'}
31}
32
33function parseStylesheets() {
34 if(!/MSIE (5|6)/.test(navigator.userAgent)) return;
35 window.attachEvent('onunload', unhookHoverEvents);
36 var sheets = doc.styleSheets, l = sheets.length;
37 for(var i=0; i<l; i++)
38 parseStylesheet(sheets[i]);
39}
40 function parseStylesheet(sheet) {
41 if(sheet.imports) {
42 try {
43 var imports = sheet.imports, l = imports.length;
44 for(var i=0; i<l; i++) parseStylesheet(sheet.imports[i]);
45 } catch(securityException){}
46 }
47
48 try {
49 var rules = (currentSheet = sheet).rules, l = rules.length;
50 for(var j=0; j<l; j++) parseCSSRule(rules[j]);
51 } catch(securityException){}
52 }
53
54 function parseCSSRule(rule) {
55 var select = rule.selectorText, style = rule.style.cssText;
56 if(!csshoverReg.test(select) || !style) return;
57
58 var pseudo = select.replace(/[^:]+:([a-z-]+).*/i, 'on$1');
59 var newSelect = select.replace(/(\.([a-z0-9_-]+):[a-z]+)|(:[a-z]+)/gi, '.$2' + pseudo);
60 var className = (/\.([a-z0-9_-]*on(hover|active))/i).exec(newSelect)[1];
61 var affected = select.replace(/:(hover|active).*$/, '');
62 var elements = getElementsBySelect(affected);
63 if(elements.length == 0) return;
64
65 currentSheet.addRule(newSelect, style);
66 for(var i=0; i<elements.length; i++)
67 new HoverElement(elements[i], className, activators[pseudo]);
68 }
69
70function HoverElement(node, className, events) {
71 if(!node.hovers) node.hovers = {};
72 if(node.hovers[className]) return;
73 node.hovers[className] = true;
74 hookHoverEvent(node, events.on, function() { node.className += ' ' + className; });
75 hookHoverEvent(node, events.off, function() { node.className = node.className.replace(new RegExp('\\s+'+className, 'g'),''); });
76}
77 function hookHoverEvent(node, type, handler) {
78 node.attachEvent(type, handler);
79 hoverEvents[hoverEvents.length] = {
80 node:node, type:type, handler:handler
81 };
82 }
83
84 function unhookHoverEvents() {
85 for(var e,i=0; i<hoverEvents.length; i++) {
86 e = hoverEvents[i];
87 e.node.detachEvent(e.type, e.handler);
88 }
89 }
90
91function getElementsBySelect(rule) {
92 var parts, nodes = [doc];
93 parts = rule.split(' ');
94 for(var i=0; i<parts.length; i++) {
95 nodes = getSelectedNodes(parts[i], nodes);
96 } return nodes;
97}
98 function getSelectedNodes(select, elements) {
99 var result, node, nodes = [];
100 var identify = (/\#([a-z0-9_-]+)/i).exec(select);
101 if(identify) {
102 var element = doc.getElementById(identify[1]);
103 return element? [element]:nodes;
104 }
105
106 var classname = (/\.([a-z0-9_-]+)/i).exec(select);
107 var tagName = select.replace(/(\.|\#|\:)[a-z0-9_-]+/i, '');
108 var classReg = classname? new RegExp('\\b' + classname[1] + '\\b'):false;
109 for(var i=0; i<elements.length; i++) {
110 result = tagName? elements[i].all.tags(tagName):elements[i].all;
111 for(var j=0; j<result.length; j++) {
112 node = result[j];
113 if(classReg && !classReg.test(node.className)) continue;
114 nodes[nodes.length] = node;
115 }
116 }
117
118 return nodes;
119 }
120</script>
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