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function BigPipe(a){copy_properties(this,{arbiter:Arbiter,rootNodeID:'content',lid:0,isAjax:false,isReplay:false,rrEnabled:true,domContentCallback:domcontent_callback,onloadCallback:onload_callback,domContentEvt:OnloadEvent.ONLOAD_DOMCONTENT_CALLBACK,onloadEvt:OnloadEvent.ONLOAD_CALLBACK,forceFinish:false,_phaseDoneCallbacks:[],_currentPhase:0,_lastPhase:-1,_timeout:20,_cached_pagelets:{}});copy_properties(this,a);this._cavalry=(this.lid&&window.CavalryLogger)?CavalryLogger.getInstance(this.lid):null;this._inst=this._cavalry&&(window._pagelet_profile||this._cavalry.isPageletProfiler());BigPipe._current_instance=this;if(window.env_get&&env_get('tti_vision')===1)(new TTIVisualizer(this)).init();this.arbiter.registerCallback(this.domContentCallback,['pagelet_displayed_all']);this.arbiter.inform('phase_begin_0',true,Arbiter.BEHAVIOR_STATE);this._inst&&this._cavalry.setTimeStamp('t_phase_begin_0');this.onloadCallback=this.arbiter.registerCallback(this.onloadCallback,['pagelet_displayed_all']);}copy_properties(BigPipe.prototype,{_ct:function(a){return (!a||'length' in a&&a.length===0)?{}:a;},_displayPagelet:function(e){if(this._inst)this._cavalry.onPageletEvent('display_start',e.id);e.content=this._ct(e.content);var d=true;for(var c in e.content){if(e.append){if(e.append==='bigpipe_root'){target_id=this.rootNodeID;}else target_id=e.append;}else target_id=c;var b=document.getElementById(target_id),a=e.content[c];if(b){if(a){if(typeof a!='string')a=DynaTemplate.renderToHtml(a[0],a[1]);if(!e.append&&e.has_inline_js){if(window.DOM&&window.HTML){DOM.setContent(b,HTML(a));}else{d=false;Bootloader.loadComponents('dom',function(){DOM.setContent(b,HTML(a));this.arbiter.inform(e.id+'_displayed',true,Arbiter.BEHAVIOR_STATE);}.bind(this));}}else if(e.append||ua.ie()<8){if(!e.append)while(b.firstChild)b.removeChild(b.firstChild);this._appendNodes(b,a);}else b.innerHTML=a;}if(this._inst)this._cavalry.onPageletEvent('display',e.id);b.setAttribute("data-referrer",b.getAttribute("data-referrer")||target_id);}}if(d)this.arbiter.inform(e.id+'_displayed',true,Arbiter.BEHAVIOR_STATE);if(e.cache_hit)$(e.id).style.border="1px red solid";},_appendNodes:function(a,d){var e=document.createElement('div');var c=ua.ie()<7;if(c)a.appendChild(e);e.innerHTML=d;var b=document.createDocumentFragment();while(e.firstChild)b.appendChild(e.firstChild);a.appendChild(b);if(c)a.removeChild(e);},_downloadJsForPagelet:function(a){Bootloader.loadResources(a.js||[],bind(this,function(){if(this._inst)this._cavalry.onPageletEvent('jsdone',a.id);a.requires=a.requires||[];if(!this.isAjax||a.phase>=1)a.requires.push('uipage_onload');var c=bind(this,function(){if(!this._isRelevant())return;invoke_callbacks(a.onload);if(this._inst)this._cavalry.onPageletEvent('onload',a.id);this.arbiter.inform('pagelet_onload',true,Arbiter.BEHAVIOR_EVENT);a.provides&&this.arbiter.inform(a.provides,true,Arbiter.BEHAVIOR_STATE);});var b=bind(this,function(){this._isRelevant()&&invoke_callbacks(a.onafterload);if(a.cacheable&&!a.cache_hit)PageletCache.write(a);});this.arbiter.registerCallback(c,a.requires);this.arbiter.registerCallback(b,[this.onloadEvt]);}),false,a.id);},_downloadCssAndDisplayPagelet:function(c){if(this._inst)this._cavalry.onPageletEvent('css',c.id);var b=bind(this,function(){var d=c.display_dependency||[];var f=[];for(var e=0;e