if(typeof(Prototype)=="undefined"){throw"Control.ProgressBar requires Prototype to be loaded.";}
if(typeof(Object.Event)=="undefined"){throw"Control.ProgressBar requires Object.Event to be loaded.";}
Control.ProgressBar=Class.create({initialize:function(container,options){this.progress=0;this.executer=false;this.active=false;this.poller=false;this.container=$(container);this.containerWidth=parseInt(this.container.getDimensions().width)-(parseInt(this.container.getStyle('border-right-width').replace(/px/,''),10)+parseInt(this.container.getStyle('border-left-width').replace(/px/,''),10));if(this.containerWidth<0||isNaN(this.containerWidth)){this.containerWidth=parseInt(this.container.getStyle('width').replace(/px/,''));}
if(isNaN(this.containerWidth)){this.containerWidth=options.default_width;}
this.progressContainer=$(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,ajaxOptions){ajaxOptions=ajaxOptions||{};var success=ajaxOptions.onSuccess||Prototype.emptyFunction;ajaxOptions.onSuccess=function(request){this.setProgress(parseInt(request.responseText,10));if(!this.active){this.poller.stop();}
success(request);}.bind(this);this.active=true;this.poller=new PeriodicalExecuter(function(){var a=new Ajax.Request(url,ajaxOptions);}.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((parseInt(this.progress,10)/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))];}}});Object.Event.extend(Control.ProgressBar);