/** * @author Ryan Johnson <ryan@livepipe.net> * @copyright 2007 LivePipe LLC * @package Control.ProgressBar * @license MIT * @url http://livepipe.net/projects/control_progress_bar/ * @version 1.0.0 */if(typeof(Control) == 'undefined')	Control = {};Control.ProgressBar = Class.create();Object.extend(Control.ProgressBar.prototype,{	container: false,	containerWidth: 0,	progressContainer: false,	progress: 0,	executer: false,	active: false,	poller: false,	initialize: function(container,options){		this.container = $(container);		this.containerWidth = this.container.getDimensions().width - (parseInt(this.container.getStyle('border-right-width').replace(/px/,'')) + parseInt(this.container.getStyle('border-left-width').replace(/px/,'')));		this.progressContainer = $(document.createElement('div'));		this.progressContainer.setStyle({			width: this.containerWidth + 'px',			height: '100%',			position: 'absolute',			top: '0px',			right: '0px'		});		this.container.appendChild(this.progressContainer);		this.options = {			afterChange: Prototype.emptyFunction,			interval: 0.25,			step: 1,			classNames: {				active: 'progress_bar_active',				inactive: 'progress_bar_inactive'			}		};		Object.extend(this.options,options || {});		this.container.addClassName(this.options.classNames.inactive);		this.active = false;	},	setProgress: function(value){		this.progress = value;		this.draw();		if(this.progress >= 100)			this.stop(false);		this.notify('afterChange',this.progress,this.active);	},	poll: function(url,interval){		this.active = true;		this.poller = new PeriodicalExecuter(function(){			new Ajax.Request(url,{				onSuccess: function(requet){					this.setProgress(parseInt(request.responseText));					if(!this.active)						this.poller.stop();				}.bind(this)			});		}.bind(this),interval || 3);	},	start: function(){		this.active = true;		this.container.removeClassName(this.options.classNames.inactive);		this.container.addClassName(this.options.classNames.active);		this.executer = new PeriodicalExecuter(this.step.bind(this,this.options.step),this.options.interval);	},	stop: function(reset){		this.active = false;		if(this.executer)			this.executer.stop();		this.container.removeClassName(this.options.classNames.active);		this.container.addClassName(this.options.classNames.inactive);		if(typeof(reset) == 'undefined' || reset == true)			this.reset();	},	step: function(amount){		this.active = true;		this.setProgress(Math.min(100,this.progress + amount));	},	reset: function(){		this.active = false;		this.setProgress(0);	},	draw: function(){		this.progressContainer.setStyle({			width: (this.containerWidth - Math.floor((this.progress / 100) * this.containerWidth)) + 'px'		});	},	notify: function(event_name){		if(this.options[event_name])			return [this.options[event_name].apply(this.options[event_name],$A(arguments).slice(1))];	}});if(typeof(Object.Event) != 'undefined')	Object.Event.extend(Control.ProgressBar);