jquery.pjax.js

(function($){var Util={support:{pjax:window.history&&window.history.pushState&&window.history.replaceState&&!navigator.userAgent.match(/(iPod|iPhone|iPad|WebApps\/.+CFNetwork)/),storage:!!window.localStorage},toInt:function(obj){return parseInt(obj);},stack:{},getTime:function(){return new Date*1;},getRealUrl:function(url){url=(url||'').replace(/\#.*?$/,'');url=url.replace('?pjax=true&','?').replace('?pjax=true','').replace('&pjax=true','');return url;},getUrlHash:function(url){return url.replace(/^[^\#]*(?:\#(.*?))?$/,'$1');},getLocalKey:function(src){var s='pjax_'+encodeURIComponent(src);return{data:s+'_data',time:s+'_time',title:s+'_title'};},removeAllCache:function(){if(!Util.support.storage)return;for(var name in localStorage){if((name.split('_')||[''])[0]==='pjax'){delete localStorage[name];}}},getCache:function(src,time,flag){var item,vkey,tkey,tval;time=Util.toInt(time);if(src in Util.stack){item=Util.stack[src],ctime=Util.getTime();if((item.time+time*1000)>ctime){return item;}else{delete Util.stack[src];}}else if(flag&&Util.support.storage){var l=Util.getLocalKey(src);vkey=l.data;tkey=l.time;item=localStorage.getItem(vkey);if(item){tval=Util.toInt(localStorage.getItem(tkey));if((tval+time*1000)>Util.getTime()){return{data:item,title:localStorage.getItem(l.title)};}else{localStorage.removeItem(vkey);localStorage.removeItem(tkey);localStorage.removeItem(l.title);}}}return null;},setCache:function(src,data,title,flag){var time=Util.getTime(),key;Util.stack[src]={data:data,title:title,time:time};if(flag&&Util.support.storage){key=Util.getLocalKey(src);localStorage.setItem(key.data,data);localStorage.setItem(key.time,time);localStorage.setItem(key.title,title);}},removeCache:function(src){src=Util.getRealUrl(src||location.href);delete Util.stack[src];if(Util.support.storage){var key=Util.getLocalKey(src);localStorage.removeItem(key.data);localStorage.removeItem(key.time);localStorage.removeItem(key.title);}}};var pjax=function(options){options=$.extend({selector:'',container:'',callback:function(){},filter:function(){}},options);if(!options.container||!options.selector){throw new Error('selector & container options must be set');}$('body').delegate(options.selector,'click',function(event){if(event.which>1||event.metaKey){return true;}var $this=$(this),href=$this.attr('href');if(typeof options.filter==='function'){if(options.filter.call(this,href,this)===true){return true;}}if(href===location.href){return true;}if(Util.getRealUrl(href)==Util.getRealUrl(location.href)){var hash=Util.getUrlHash(href);if(hash){location.hash=hash;options.callback&&options.callback.call(this,{type:'hash'});}return true;}event.preventDefault();options=$.extend(true,options,{url:href,element:this,push:true});pjax.request(options);});};pjax.xhr=null;pjax.options={};pjax.state={};pjax.defaultOptions={timeout:2000,element:null,cache:24*3600,storage:true,url:'',push:true,show:'',title:'',titleSuffix:'',type:'GET',data:{pjax:true},dataType:'html',callback:null,beforeSend:function(xhr){$(pjax.options.container).trigger('pjax.start',[xhr,pjax.options]);xhr&&xhr.setRequestHeader('X-PJAX',true);},error:function(){pjax.options.callback&&pjax.options.callback.call(pjax.options.element,{type:'error'});location.href=pjax.options.url;},complete:function(xhr){$(pjax.options.container).trigger('pjax.end',[xhr,pjax.options]);}};pjax.showFx={"_default":function(data,callback,isCached){this.html(data);callback&&callback.call(this,data,isCached);},fade:function(data,callback,isCached){var $this=this;if(isCached){$this.html(data);callback&&callback.call($this,data,isCached);}else{this.fadeOut(500,function(){$this.html(data).fadeIn(500,function(){callback&&callback.call($this,data,isCached);});});}}}
pjax.showFn=function(showType,container,data,fn,isCached){var fx=null;if(typeof showType==='function'){fx=showType;}else{if(!(showType in pjax.showFx)){showType="_default";}fx=pjax.showFx[showType];}fx&&fx.call(container,data,function(){var hash=location.hash;if(hash!=''){location.href=hash;if(/Firefox/.test(navigator.userAgent)){history.replaceState($.extend({},pjax.state,{url:null}),document.title);}}else{window.scrollTo(0,0);}fn&&fn.call(this,data,isCached);},isCached);}
pjax.success=function(data,isCached){if(isCached!==true){isCached=false;}if(pjax.html){data=$(data).find(pjax.html).html();}if((data||'').indexOf('<html')!=-1){pjax.options.callback&&pjax.options.callback.call(pjax.options.element,{type:'error'});location.href=pjax.options.url;return false;}var title=pjax.options.title||"",el;if(title==""&&pjax.options.element){el=$(pjax.options.element);title=el.attr('title')||el.text();}var matches=data.match(/<title>(.*?)<\/title>/);if(matches){title=matches[1];}if(title){if(title.indexOf(pjax.options.titleSuffix)==-1){title+=pjax.options.titleSuffix;}}document.title=title;pjax.state={container:pjax.options.container,timeout:pjax.options.timeout,cache:pjax.options.cache,storage:pjax.options.storage,show:pjax.options.show,title:title,url:pjax.options.oldUrl};var query=$.param(pjax.options.data);if(query!=""){pjax.state.url=pjax.options.url+(/\?/.test(pjax.options.url)?"&":"?")+query;}if(pjax.options.push){if(!pjax.active){history.replaceState($.extend({},pjax.state,{url:null}),document.title);pjax.active=true;}history.pushState(pjax.state,document.title,pjax.options.oldUrl);}else if(pjax.options.push===false){history.replaceState(pjax.state,document.title,pjax.options.oldUrl);}pjax.options.showFn&&pjax.options.showFn(data,function(){pjax.options.callback&&pjax.options.callback.call(pjax.options.element,{type:isCached?'cache':'success'});},isCached);if(pjax.options.cache&&!isCached){Util.setCache(pjax.options.url,data,title,pjax.options.storage);}};pjax.request=function(options){if(options.hasOwnProperty('data')){pjax.defaultOptions.data=options.data;}options=$.extend(true,pjax.defaultOptions,options);var cache,container=$(options.container);options.oldUrl=options.url;options.url=Util.getRealUrl(options.url);if($(options.element).length){cache=Util.toInt($(options.element).attr('data-pjax-cache'));if(cache){options.cache=cache;}}if(options.cache===true){options.cache=24*3600;}options.cache=Util.toInt(options.cache);if(options.cache===0){Util.removeAllCache();}if(!options.showFn){options.showFn=function(data,fn,isCached){pjax.showFn(options.show,container,data,fn,isCached);};}pjax.options=options;pjax.options.success=pjax.success;if(options.cache&&(cache=Util.getCache(options.url,options.cache,options.storage))){options.beforeSend();options.title=cache.title;pjax.success(cache.data,true);options.complete();return true;}if(pjax.xhr&&pjax.xhr.readyState<4){pjax.xhr.onreadystatechange=$.noop;pjax.xhr.abort();}pjax.xhr=$.ajax(pjax.options);};var popped=('state'in window.history),initialURL=location.href;$(window).bind('popstate',function(event){var initialPop=!popped&&location.href==initialURL;popped=true;if(initialPop)return;var state=event.state;if(state&&state.container){if($(state.container).length){var data={url:state.url,container:state.container,push:null,timeout:state.timeout,cache:state.cache,storage:state.storage,title:state.title,element:null};pjax.request(data);}else{window.location=location.href;}}});if(!Util.support.pjax){pjax=function(){return true;};pjax.request=function(options){if(options&&options.url){location.href=options.url;}};}$.pjax=pjax;$.pjax.util=Util;if($.inArray('state',$.event.props)<0){$.event.props.push('state')}})(jQuery);