http://www.fontanelle.org/js/tooltip/jquery.timers.js

1/*******************************************************************************
2 jquery.mb.components
3 Copyright (c) 2001-2010. Matteo Bicocchi (Pupunzi); Open lab srl, Firenze - Italy
4 email: [email protected]
5 site: http://pupunzi.com
6
7 Licences: MIT, GPL
8 http://www.opensource.org/licenses/mit-license.php
9 http://www.gnu.org/licenses/gpl.html
10 ******************************************************************************/
11
12jQuery.fn.extend({
13	everyTime: function(interval, label, fn, times, belay) {
14		return this.each(function() {
15			jQuery.timer.add(this, interval, label, fn, times, belay);
16		});
17	},
18	oneTime: function(interval, label, fn) {
19		return this.each(function() {
20			jQuery.timer.add(this, interval, label, fn, 1);
21		});
22	},
23	stopTime: function(label, fn) {
24		return this.each(function() {
25			jQuery.timer.remove(this, label, fn);
26		});
27	}
28});
29
30jQuery.extend({
31	timer: {
32		guid: 1,
33		global: {},
34		regex: /^([0-9]+)\s*(.*s)?$/,
35		powers: {
36			// Yeah this is major overkill...
37			'ms': 1,
38			'cs': 10,
39			'ds': 100,
40			's': 1000,
41			'das': 10000,
42			'hs': 100000,
43			'ks': 1000000
44		},
45		timeParse: function(value) {
46			if (value == undefined || value == null)
47				return null;
48			var result = this.regex.exec(jQuery.trim(value.toString()));
49			if (result[2]) {
50				var num = parseInt(result[1], 10);
51				var mult = this.powers[result[2]] || 1;
52				return num * mult;
53			} else {
54				return value;
55			}
56		},
57		add: function(element, interval, label, fn, times, belay) {
58			var counter = 0;
59			
60			if (jQuery.isFunction(label)) {
61				if (!times) 
62					times = fn;
63				fn = label;
64				label = interval;
65			}
66			
67			interval = jQuery.timer.timeParse(interval);
68
69			if (typeof interval != 'number' || isNaN(interval) || interval <= 0)
70				return;
71
72			if (times && times.constructor != Number) {
73				belay = !!times;
74				times = 0;
75			}
76			
77			times = times || 0;
78			belay = belay || false;
79			
80			if (!element.$timers) 
81				element.$timers = {};
82			
83			if (!element.$timers[label])
84				element.$timers[label] = {};
85			
86			fn.$timerID = fn.$timerID || this.guid++;
87			
88			var handler = function() {
89				if (belay && this.inProgress) 
90					return;
91				this.inProgress = true;
92				if ((++counter > times && times !== 0) || fn.call(element, counter) === false)
93					jQuery.timer.remove(element, label, fn);
94				this.inProgress = false;
95			};
96			
97			handler.$timerID = fn.$timerID;
98			
99			if (!element.$timers[label][fn.$timerID]) 
100				element.$timers[label][fn.$timerID] = window.setInterval(handler,interval);
101			
102			if ( !this.global[label] )
103				this.global[label] = [];
104			this.global[label].push( element );
105			
106		},
107		remove: function(element, label, fn) {
108			var timers = element.$timers, ret;
109			
110			if ( timers ) {
111				
112				if (!label) {
113					for ( label in timers )
114						this.remove(element, label, fn);
115				} else if ( timers[label] ) {
116					if ( fn ) {
117						if ( fn.$timerID ) {
118							window.clearInterval(timers[label][fn.$timerID]);
119							delete timers[label][fn.$timerID];
120						}
121					} else {
122						for ( var fn in timers[label] ) {
123							window.clearInterval(timers[label][fn]);
124							delete timers[label][fn];
125						}
126					}
127					
128					for ( ret in timers[label] ) break;
129					if ( !ret ) {
130						ret = null;
131						delete timers[label];
132					}
133				}
134				
135				for ( ret in timers ) break;
136				if ( !ret ) 
137					element.$timers = null;
138			}
139		}
140	}
141});
142
143if (jQuery.browser.msie)
144	jQuery(window).one("unload", function() {
145		var global = jQuery.timer.global;
146		for ( var label in global ) {
147			var els = global[label], i = els.length;
148			while ( --i )
149				jQuery.timer.remove(els[i], label);
150		}
151	});
152
153