(function(){var ajaxmonitor,bar,documentmonitor,elementmonitor,elementtracker,eventlagmonitor,evented,events,notargeterror,requestintercept,source_keys,scaler,socketrequesttracker,xhrrequesttracker,animation,avgamplitude,bar,cancelanimation,cancelanimationframe,defaultoptions,extend,extendnative,getfromdom,getintercept,handlepushstate,ignorestack,init,now,options,requestanimationframe,result,runanimation,scalers,shouldignoreurl,shouldtrack,source,sources,uniscaler,_websocket,_xdomainrequest,_xmlhttprequest,_i,_intercept,_len,_pushstate,_ref,_ref1,_replacestate,__slice=[].slice,__hasprop={}.hasownproperty,__extends=function(child,parent){for(var key in parent){if(__hasprop.call(parent,key))child[key]=parent[key]}function ctor(){this.constructor=child}ctor.prototype=parent.prototype;child.prototype=new ctor();child.__super__=parent.prototype;return child},__indexof=[].indexof||function(item){for(var i=0,l=this.length;i<l;i++){if(i in this&&this[i]===item)return i}return-1};defaultoptions={catchuptime:500,initialrate:.03,mintime:500,ghosttime:500,maxprogressperframe:10,easefactor:1.25,startonpageload:true,restartonpushstate:true,restartonrequestafter:500,target:'body',elements:{checkinterval:100,selectors:['body']},eventlag:{minsamples:10,samplecount:3,lagthreshold:3},ajax:{trackmethods:['get'],trackwebsockets:true,ignoreurls:[]}};now=function(){var _ref;return(_ref=typeof performance!=="undefined"&&performance!==null?typeof performance.now==="function"?performance.now():void 0:void 0)!=null?_ref:+(new date)};requestanimationframe=window.requestanimationframe||window.mozrequestanimationframe||window.webkitrequestanimationframe||window.msrequestanimationframe;cancelanimationframe=window.cancelanimationframe||window.mozcancelanimationframe;if(requestanimationframe==null){requestanimationframe=function(fn){return settimeout(fn,50)};cancelanimationframe=function(id){return cleartimeout(id)}}runanimation=function(fn){var last,tick;last=now();tick=function(){var diff;diff=now()-last;if(diff>=33){last=now();return fn(diff,function(){return requestanimationframe(tick)})}else{return settimeout(tick,33-diff)}};return tick()};result=function(){var args,key,obj;obj=arguments[0],key=arguments[1],args=3<=arguments.length?__slice.call(arguments,2):[];if(typeof obj[key]==='function'){return obj[key].apply(obj,args)}else{return obj[key]}};extend=function(){var key,out,source,sources,val,_i,_len;out=arguments[0],sources=2<=arguments.length?__slice.call(arguments,1):[];for(_i=0,_len=sources.length;_i<_len;_i++){source=sources[_i];if(source){for(key in source){if(!__hasprop.call(source,key))continue;val=source[key];if((out[key]!=null)&&typeof out[key]==='object'&&(val!=null)&&typeof val==='object'){extend(out[key],val)}else{out[key]=val}}}}return out};avgamplitude=function(arr){var count,sum,v,_i,_len;sum=count=0;for(_i=0,_len=arr.length;_i<_len;_i++){v=arr[_i];sum+=math.abs(v);count++}return sum/count};getfromdom=function(key,json){var data,e,el;if(key==null){key='options'}if(json==null){json=true}el=document.queryselector("[data-pace-"+key+"]");if(!el){return}data=el.getattribute("data-pace-"+key);if(!json){return data}try{return json.parse(data)}catch(_error){e=_error;return typeof console!=="undefined"&&console!==null?console.error("error parsing inline pace options",e):void 0}};evented=(function(){function evented(){}evented.prototype.on=function(event,handler,ctx,once){var _base;if(once==null){once=false}if(this.bindings==null){this.bindings={}}if((_base=this.bindings)[event]==null){_base[event]=[]}return this.bindings[event].push({handler:handler,ctx:ctx,once:once})};evented.prototype.once=function(event,handler,ctx){return this.on(event,handler,ctx,true)};evented.prototype.off=function(event,handler){var i,_ref,_results;if(((_ref=this.bindings)!=null?_ref[event]:void 0)==null){return}if(handler==null){return delete this.bindings[event]}else{i=0;_results=[];while(i<this.bindings[event].length){if(this.bindings[event][i].handler===handler){_results.push(this.bindings[event].splice(i,1))}else{_results.push(i++)}}return _results}};evented.prototype.trigger=function(){var args,ctx,event,handler,i,once,_ref,_ref1,_results;event=arguments[0],args=2<=arguments.length?__slice.call(arguments,1):[];if((_ref=this.bindings)!=null?_ref[event]:void 0){i=0;_results=[];while(i<this.bindings[event].length){_ref1=this.bindings[event][i],handler=_ref1.handler,ctx=_ref1.ctx,once=_ref1.once;handler.apply(ctx!=null?ctx:this,args);if(once){_results.push(this.bindings[event].splice(i,1))}else{_results.push(i++)}}return _results}};return evented})();if(window.pace==null){window.pace={}}extend(pace,evented.prototype);options=pace.options=extend({},defaultoptions,window.paceoptions,getfromdom());_ref=['ajax','document','eventlag','elements'];for(_i=0,_len=_ref.length;_i<_len;_i++){source=_ref[_i];if(options[source]===true){options[source]=defaultoptions[source]}}notargeterror=(function(_super){__extends(notargeterror,_super);function notargeterror(){_ref1=notargeterror.__super__.constructor.apply(this,arguments);return _ref1}return notargeterror})(error);bar=(function(){function bar(){this.progress=0}bar.prototype.getelement=function(){var targetelement;if(this.el==null){targetelement=document.queryselector(options.target);if(!targetelement){throw new notargeterror}this.el=document.createelement('div');this.el.classname="pace pace-active";document.body.classname=document.body.classname.replace(/pace-done/g,'');document.body.classname+=' pace-running';this.el.innerhtml='<div class="pace-progress">\n  <div class="pace-progress-inner"></div>\n</div>\n<div class="pace-activity"></div>';if(targetelement.firstchild!=null){targetelement.insertbefore(this.el,targetelement.firstchild)}else{targetelement.appendchild(this.el)}}return this.el};bar.prototype.finish=function(){var el;el=this.getelement();el.classname=el.classname.replace('pace-active','');el.classname+=' pace-inactive';document.body.classname=document.body.classname.replace('pace-running','');return document.body.classname+=' pace-done'};bar.prototype.update=function(prog){this.progress=prog;return this.render()};bar.prototype.destroy=function(){try{this.getelement().parentnode.removechild(this.getelement())}catch(_error){notargeterror=_error}return this.el=void 0};bar.prototype.render=function(){var el,progressstr;if(document.queryselector(options.target)==null){return false}el=this.getelement();el.children[0].style.width=""+this.progress+"%";if(!this.lastrenderedprogress||this.lastrenderedprogress|0!==this.progress|0){el.children[0].setattribute('data-progress-text',""+(this.progress|0)+"%");if(this.progress>=100){progressstr='99'}else{progressstr=this.progress<10?"0":"";progressstr+=this.progress|0}el.children[0].setattribute('data-progress',""+progressstr)}return this.lastrenderedprogress=this.progress};bar.prototype.done=function(){return this.progress>=100};return bar})();events=(function(){function events(){this.bindings={}}events.prototype.trigger=function(name,val){var binding,_j,_len1,_ref2,_results;if(this.bindings[name]!=null){_ref2=this.bindings[name];_results=[];for(_j=0,_len1=_ref2.length;_j<_len1;_j++){binding=_ref2[_j];_results.push(binding.call(this,val))}return _results}};events.prototype.on=function(name,fn){var _base;if((_base=this.bindings)[name]==null){_base[name]=[]}return this.bindings[name].push(fn)};return events})();_xmlhttprequest=window.xmlhttprequest;_xdomainrequest=window.xdomainrequest;_websocket=window.websocket;extendnative=function(to,from){var e,key,val,_results;_results=[];for(key in from.prototype){try{val=from.prototype[key];if((to[key]==null)&&typeof val!=='function'){_results.push(to[key]=val)}else{_results.push(void 0)}}catch(_error){e=_error}}return _results};ignorestack=[];pace.ignore=function(){var args,fn,ret;fn=arguments[0],args=2<=arguments.length?__slice.call(arguments,1):[];ignorestack.unshift('ignore');ret=fn.apply(null,args);ignorestack.shift();return ret};pace.track=function(){var args,fn,ret;fn=arguments[0],args=2<=arguments.length?__slice.call(arguments,1):[];ignorestack.unshift('track');ret=fn.apply(null,args);ignorestack.shift();return ret};shouldtrack=function(method){var _ref2;if(method==null){method='get'}if(ignorestack[0]==='track'){return'force'}if(!ignorestack.length&&options.ajax){if(method==='socket'&&options.ajax.trackwebsockets){return true}else if(_ref2=method.touppercase(),__indexof.call(options.ajax.trackmethods,_ref2)>=0){return true}}return false};requestintercept=(function(_super){__extends(requestintercept,_super);function requestintercept(){var monitorxhr,_this=this;requestintercept.__super__.constructor.apply(this,arguments);monitorxhr=function(req){var _open;_open=req.open;return req.open=function(type,url,async){if(shouldtrack(type)){_this.trigger('request',{type:type,url:url,request:req})}return _open.apply(req,arguments)}};window.xmlhttprequest=function(flags){var req;req=new _xmlhttprequest(flags);monitorxhr(req);return req};try{extendnative(window.xmlhttprequest,_xmlhttprequest)}catch(_error){}if(_xdomainrequest!=null){window.xdomainrequest=function(){var req;req=new _xdomainrequest;monitorxhr(req);return req};try{extendnative(window.xdomainrequest,_xdomainrequest)}catch(_error){}}if((_websocket!=null)&&options.ajax.trackwebsockets){window.websocket=function(url,protocols){var req;if(protocols!=null){req=new _websocket(url,protocols)}else{req=new _websocket(url)}if(shouldtrack('socket')){_this.trigger('request',{type:'socket',url:url,protocols:protocols,request:req})}return req};try{extendnative(window.websocket,_websocket)}catch(_error){}}}return requestintercept})(events);_intercept=null;getintercept=function(){if(_intercept==null){_intercept=new requestintercept}return _intercept};shouldignoreurl=function(url){var pattern,_j,_len1,_ref2;_ref2=options.ajax.ignoreurls;for(_j=0,_len1=_ref2.length;_j<_len1;_j++){pattern=_ref2[_j];if(typeof pattern==='string'){if(url.indexof(pattern)!==-1){return true}}else{if(pattern.test(url)){return true}}}return false};getintercept().on('request',function(_arg){var after,args,request,type,url;type=_arg.type,request=_arg.request,url=_arg.url;if(shouldignoreurl(url)){return}if(!pace.running&&(options.restartonrequestafter!==false||shouldtrack(type)==='force')){args=arguments;after=options.restartonrequestafter||0;if(typeof after==='boolean'){after=0}return settimeout(function(){var stillactive,_j,_len1,_ref2,_ref3,_results;if(type==='socket'){stillactive=request.readystate<2}else{stillactive=(0<(_ref2=request.readystate)&&_ref2<4)}if(stillactive){pace.restart();_ref3=pace.sources;_results=[];for(_j=0,_len1=_ref3.length;_j<_len1;_j++){source=_ref3[_j];if(source instanceof ajaxmonitor){source.watch.apply(source,args);break}else{_results.push(void 0)}}return _results}},after)}});ajaxmonitor=(function(){function ajaxmonitor(){var _this=this;this.elements=[];getintercept().on('request',function(){return _this.watch.apply(_this,arguments)})}ajaxmonitor.prototype.watch=function(_arg){var request,tracker,type,url;type=_arg.type,request=_arg.request,url=_arg.url;if(shouldignoreurl(url)){return}if(type==='socket'){tracker=new socketrequesttracker(request)}else{tracker=new xhrrequesttracker(request)}return this.elements.push(tracker)};return ajaxmonitor})();xhrrequesttracker=(function(){function xhrrequesttracker(request){var event,size,_j,_len1,_onreadystatechange,_ref2,_this=this;this.progress=0;if(window.progressevent!=null){size=null;request.addeventlistener('progress',function(evt){if(evt.lengthcomputable){return _this.progress=100*evt.loaded/evt.total}else{return _this.progress=_this.progress+(100-_this.progress)/2}});_ref2=['load','abort','timeout','error'];for(_j=0,_len1=_ref2.length;_j<_len1;_j++){event=_ref2[_j];request.addeventlistener(event,function(){return _this.progress=100})}}else{_onreadystatechange=request.onreadystatechange;request.onreadystatechange=function(){var _ref3;if((_ref3=request.readystate)===0||_ref3===4){_this.progress=100}else if(request.readystate===3){_this.progress=50}return typeof _onreadystatechange==="function"?_onreadystatechange.apply(null,arguments):void 0}}}return xhrrequesttracker})();socketrequesttracker=(function(){function socketrequesttracker(request){var event,_j,_len1,_ref2,_this=this;this.progress=0;_ref2=['error','open'];for(_j=0,_len1=_ref2.length;_j<_len1;_j++){event=_ref2[_j];request.addeventlistener(event,function(){return _this.progress=100})}}return socketrequesttracker})();elementmonitor=(function(){function elementmonitor(options){var selector,_j,_len1,_ref2;if(options==null){options={}}this.elements=[];if(options.selectors==null){options.selectors=[]}_ref2=options.selectors;for(_j=0,_len1=_ref2.length;_j<_len1;_j++){selector=_ref2[_j];this.elements.push(new elementtracker(selector))}}return elementmonitor})();elementtracker=(function(){function elementtracker(selector){this.selector=selector;this.progress=0;this.check()}elementtracker.prototype.check=function(){var _this=this;if(document.queryselector(this.selector)){return this.done()}else{return settimeout((function(){return _this.check()}),options.elements.checkinterval)}};elementtracker.prototype.done=function(){return this.progress=100};return elementtracker})();documentmonitor=(function(){documentmonitor.prototype.states={loading:0,interactive:50,complete:100};function documentmonitor(){var _onreadystatechange,_ref2,_this=this;this.progress=(_ref2=this.states[document.readystate])!=null?_ref2:100;_onreadystatechange=document.onreadystatechange;document.onreadystatechange=function(){if(_this.states[document.readystate]!=null){_this.progress=_this.states[document.readystate]}return typeof _onreadystatechange==="function"?_onreadystatechange.apply(null,arguments):void 0}}return documentmonitor})();eventlagmonitor=(function(){function eventlagmonitor(){var avg,interval,last,points,samples,_this=this;this.progress=0;avg=0;samples=[];points=0;last=now();interval=setinterval(function(){var diff;diff=now()-last-50;last=now();samples.push(diff);if(samples.length>options.eventlag.samplecount){samples.shift()}avg=avgamplitude(samples);if(++points>=options.eventlag.minsamples&&avg<options.eventlag.lagthreshold){_this.progress=100;return clearinterval(interval)}else{return _this.progress=100*(3/(avg+3))}},50)}return eventlagmonitor})();scaler=(function(){function scaler(source){this.source=source;this.last=this.sincelastupdate=0;this.rate=options.initialrate;this.catchup=0;this.progress=this.lastprogress=0;if(this.source!=null){this.progress=result(this.source,'progress')}}scaler.prototype.tick=function(frametime,val){var scaling;if(val==null){val=result(this.source,'progress')}if(val>=100){this.done=true}if(val===this.last){this.sincelastupdate+=frametime}else{if(this.sincelastupdate){this.rate=(val-this.last)/this.sincelastupdate}this.catchup=(val-this.progress)/options.catchuptime;this.sincelastupdate=0;this.last=val}if(val>this.progress){this.progress+=this.catchup*frametime}scaling=1-math.pow(this.progress/100,options.easefactor);this.progress+=scaling*this.rate*frametime;this.progress=math.min(this.lastprogress+options.maxprogressperframe,this.progress);this.progress=math.max(0,this.progress);this.progress=math.min(100,this.progress);this.lastprogress=this.progress;return this.progress};return scaler})();sources=null;scalers=null;bar=null;uniscaler=null;animation=null;cancelanimation=null;pace.running=false;handlepushstate=function(){if(options.restartonpushstate){return pace.restart()}};if(window.history.pushstate!=null){_pushstate=window.history.pushstate;window.history.pushstate=function(){handlepushstate();return _pushstate.apply(window.history,arguments)}}if(window.history.replacestate!=null){_replacestate=window.history.replacestate;window.history.replacestate=function(){handlepushstate();return _replacestate.apply(window.history,arguments)}}source_keys={ajax:ajaxmonitor,elements:elementmonitor,document:documentmonitor,eventlag:eventlagmonitor};(init=function(){var type,_j,_k,_len1,_len2,_ref2,_ref3,_ref4;pace.sources=sources=[];_ref2=['ajax','elements','document','eventlag'];for(_j=0,_len1=_ref2.length;_j<_len1;_j++){type=_ref2[_j];if(options[type]!==false){sources.push(new source_keys[type](options[type]))}}_ref4=(_ref3=options.extrasources)!=null?_ref3:[];for(_k=0,_len2=_ref4.length;_k<_len2;_k++){source=_ref4[_k];sources.push(new source(options))}pace.bar=bar=new bar;scalers=[];return uniscaler=new scaler})();pace.stop=function(){pace.trigger('stop');pace.running=false;bar.destroy();cancelanimation=true;if(animation!=null){if(typeof cancelanimationframe==="function"){cancelanimationframe(animation)}animation=null}return init()};pace.restart=function(){pace.trigger('restart');pace.stop();return pace.start()};pace.go=function(){var start;pace.running=true;bar.render();start=now();cancelanimation=false;return animation=runanimation(function(frametime,enqueuenextframe){var avg,count,done,element,elements,i,j,remaining,scaler,scalerlist,sum,_j,_k,_len1,_len2,_ref2;remaining=100-bar.progress;count=sum=0;done=true;for(i=_j=0,_len1=sources.length;_j<_len1;i=++_j){source=sources[i];scalerlist=scalers[i]!=null?scalers[i]:scalers[i]=[];elements=(_ref2=source.elements)!=null?_ref2:[source];for(j=_k=0,_len2=elements.length;_k<_len2;j=++_k){element=elements[j];scaler=scalerlist[j]!=null?scalerlist[j]:scalerlist[j]=new scaler(element);done&=scaler.done;if(scaler.done){continue}count++;sum+=scaler.tick(frametime)}}avg=sum/count;bar.update(uniscaler.tick(frametime,avg));if(bar.done()||done||cancelanimation){bar.update(100);pace.trigger('done');return settimeout(function(){bar.finish();pace.running=false;return pace.trigger('hide')},math.max(options.ghosttime,math.max(options.mintime-(now()-start),0)))}else{return enqueuenextframe()}})};pace.start=function(_options){extend(options,_options);pace.running=true;try{bar.render()}catch(_error){notargeterror=_error}if(!document.queryselector('.pace')){return settimeout(pace.start,50)}else{pace.trigger('start');return pace.go()}};if(typeof define==='function'&&define.amd){define(function(){return pace})}else if(typeof exports==='object'){module.exports=pace}else{if(options.startonpageload){pace.start()}}}).call(this);