Chris@5: /*!
Chris@5:  * Pause jQuery plugin v0.1
Chris@5:  *
Chris@5:  * Copyright 2010 by Tobia Conforto <tobia.conforto@gmail.com>
Chris@5:  *
Chris@5:  * Based on Pause-resume-animation jQuery plugin by Joe Weitzel
Chris@5:  *
Chris@5:  * This program is free software; you can redistribute it and/or modify it
Chris@5:  * under the terms of the GNU General Public License as published by the Free
Chris@5:  * Software Foundation; either version 2 of the License, or(at your option)
Chris@5:  * any later version.
Chris@5:  *
Chris@5:  * This program is distributed in the hope that it will be useful, but WITHOUT
Chris@5:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
Chris@5:  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
Chris@5:  * more details.
Chris@5:  *
Chris@5:  * You should have received a copy of the GNU General Public License along with
Chris@5:  * this program; if not, write to the Free Software Foundation, Inc., 51
Chris@5:  * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Chris@5:  */
Chris@5: /* Changelog:
Chris@5:  *
Chris@5:  * 0.1    2010-06-13  Initial release
Chris@5:  */
Chris@5: (function() {
Chris@5: 	var $ = jQuery,
Chris@5: 		pauseId = 'jQuery.pause',
Chris@5: 		uuid = 1,
Chris@5: 		oldAnimate = $.fn.animate,
Chris@5: 		anims = {};
Chris@5: 
Chris@5: 	function now() { return new Date().getTime(); }
Chris@5: 
Chris@5: 	$.fn.animate = function(prop, speed, easing, callback) {
Chris@5: 		var optall = $.speed(speed, easing, callback);
Chris@5: 		optall.complete = optall.old; // unwrap callback
Chris@5: 		return this.each(function() {
Chris@5: 			// check pauseId
Chris@5: 			if (! this[pauseId])
Chris@5: 				this[pauseId] = uuid++;
Chris@5: 			// start animation
Chris@5: 			var opt = $.extend({}, optall);
Chris@5: 			oldAnimate.apply($(this), [prop, $.extend({}, opt)]);
Chris@5: 			// store data
Chris@5: 			anims[this[pauseId]] = {
Chris@5: 				run: true,
Chris@5: 				prop: prop,
Chris@5: 				opt: opt,
Chris@5: 				start: now(),
Chris@5: 				done: 0
Chris@5: 			};
Chris@5: 		});
Chris@5: 	};
Chris@5: 
Chris@5: 	$.fn.pause = function() {
Chris@5: 		return this.each(function() {
Chris@5: 			// check pauseId
Chris@5: 			if (! this[pauseId])
Chris@5: 				this[pauseId] = uuid++;
Chris@5: 			// fetch data
Chris@5: 			var data = anims[this[pauseId]];
Chris@5: 			if (data && data.run) {
Chris@5: 				data.done += now() - data.start;
Chris@5: 				if (data.done > data.opt.duration) {
Chris@5: 					// remove stale entry
Chris@5: 					delete anims[this[pauseId]];
Chris@5: 				} else {
Chris@5: 					// pause animation
Chris@5: 					$(this).stop();
Chris@5: 					data.run = false;
Chris@5: 				}
Chris@5: 			}
Chris@5: 		});
Chris@5: 	};
Chris@5: 
Chris@5: 	$.fn.resume = function() {
Chris@5: 		return this.each(function() {
Chris@5: 			// check pauseId
Chris@5: 			if (! this[pauseId])
Chris@5: 				this[pauseId] = uuid++;
Chris@5: 			// fetch data
Chris@5: 			var data = anims[this[pauseId]];
Chris@5: 			if (data && ! data.run) {
Chris@5: 				// resume animation
Chris@5: 				data.opt.duration -= data.done;
Chris@5: 				data.done = 0;
Chris@5: 				data.run = true;
Chris@5: 				data.start = now();
Chris@5: 				oldAnimate.apply($(this), [data.prop, $.extend({}, data.opt)]);
Chris@5: 			}
Chris@5: 		});
Chris@5: 	};
Chris@5: })();