/*
Copyright (c) 2009, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.8.0r4
*/
YAHOO.util.Connect={_msxml_progid:["Microsoft.XMLHTTP","MSXML2.XMLHTTP.3.0","MSXML2.XMLHTTP"],_http_headers:{},_has_http_headers:false,_use_default_post_header:true,_default_post_header:"application/x-www-form-urlencoded; charset=UTF-8",_default_form_header:"application/x-www-form-urlencoded",_use_default_xhr_header:true,_default_xhr_header:"XMLHttpRequest",_has_default_headers:true,_default_headers:{},_poll:{},_timeOut:{},_polling_interval:50,_transaction_id:0,startEvent:new YAHOO.util.CustomEvent("start"),completeEvent:new YAHOO.util.CustomEvent("complete"),successEvent:new YAHOO.util.CustomEvent("success"),failureEvent:new YAHOO.util.CustomEvent("failure"),abortEvent:new YAHOO.util.CustomEvent("abort"),_customEvents:{onStart:["startEvent","start"],onComplete:["completeEvent","complete"],onSuccess:["successEvent","success"],onFailure:["failureEvent","failure"],onUpload:["uploadEvent","upload"],onAbort:["abortEvent","abort"]},setProgId:function(A){this._msxml_progid.unshift(A);},setDefaultPostHeader:function(A){if(typeof A=="string"){this._default_post_header=A;}else{if(typeof A=="boolean"){this._use_default_post_header=A;}}},setDefaultXhrHeader:function(A){if(typeof A=="string"){this._default_xhr_header=A;}else{this._use_default_xhr_header=A;}},setPollingInterval:function(A){if(typeof A=="number"&&isFinite(A)){this._polling_interval=A;}},createXhrObject:function(F){var D,A,B;try{A=new XMLHttpRequest();D={conn:A,tId:F,xhr:true};}catch(C){for(B=0;B<this._msxml_progid.length;++B){try{A=new ActiveXObject(this._msxml_progid[B]);D={conn:A,tId:F,xhr:true};break;}catch(E){}}}finally{return D;}},getConnectionObject:function(A){var C,D=this._transaction_id;try{if(!A){C=this.createXhrObject(D);}else{C={tId:D};if(A==="xdr"){C.conn=this._transport;C.xdr=true;}else{if(A==="upload"){C.upload=true;}}}if(C){this._transaction_id++;}}catch(B){}return C;},asyncRequest:function(G,D,F,A){var E,C,B=(F&&F.argument)?F.argument:null;if(this._isFileUpload){C="upload";}else{if(F.xdr){C="xdr";}}E=this.getConnectionObject(C);if(!E){return null;}else{if(F&&F.customevents){this.initCustomEvents(E,F);}if(this._isFormSubmit){if(this._isFileUpload){this.uploadFile(E,F,D,A);return E;}if(G.toUpperCase()=="GET"){if(this._sFormData.length!==0){D+=((D.indexOf("?")==-1)?"?":"&")+this._sFormData;}}else{if(G.toUpperCase()=="POST"){A=A?this._sFormData+"&"+A:this._sFormData;}}}if(G.toUpperCase()=="GET"&&(F&&F.cache===false)){D+=((D.indexOf("?")==-1)?"?":"&")+"rnd="+new Date().valueOf().toString();}if(this._use_default_xhr_header){if(!this._default_headers["X-Requested-With"]){this.initHeader("X-Requested-With",this._default_xhr_header,true);}}if((G.toUpperCase()==="POST"&&this._use_default_post_header)&&this._isFormSubmit===false){this.initHeader("Content-Type",this._default_post_header);}if(E.xdr){this.xdr(E,G,D,F,A);return E;}E.conn.open(G,D,true);if(this._has_default_headers||this._has_http_headers){this.setHeader(E);}this.handleReadyState(E,F);E.conn.send(A||"");if(this._isFormSubmit===true){this.resetFormState();}this.startEvent.fire(E,B);if(E.startEvent){E.startEvent.fire(E,B);}return E;}},initCustomEvents:function(A,C){var B;for(B in C.customevents){if(this._customEvents[B][0]){A[this._customEvents[B][0]]=new YAHOO.util.CustomEvent(this._customEvents[B][1],(C.scope)?C.scope:null);A[this._customEvents[B][0]].subscribe(C.customevents[B]);}}},handleReadyState:function(C,D){var B=this,A=(D&&D.argument)?D.argument:null;if(D&&D.timeout){this._timeOut[C.tId]=window.setTimeout(function(){B.abort(C,D,true);},D.timeout);}this._poll[C.tId]=window.setInterval(function(){if(C.conn&&C.conn.readyState===4){window.clearInterval(B._poll[C.tId]);delete B._poll[C.tId];if(D&&D.timeout){window.clearTimeout(B._timeOut[C.tId]);delete B._timeOut[C.tId];}B.completeEvent.fire(C,A);if(C.completeEvent){C.completeEvent.fire(C,A);}B.handleTransactionResponse(C,D);}},this._polling_interval);},handleTransactionResponse:function(B,I,D){var E,A,G=(I&&I.argument)?I.argument:null,C=(B.r&&B.r.statusText==="xdr:success")?true:false,H=(B.r&&B.r.statusText==="xdr:failure")?true:false,J=D;try{if((B.conn.status!==undefined&&B.conn.status!==0)||C){E=B.conn.status;}else{if(H&&!J){E=0;}else{E=13030;}}}catch(F){E=13030;}if((E>=200&&E<300)||E===1223||C){A=B.xdr?B.r:this.createResponseObject(B,G);if(I&&I.success){if(!I.scope){I.success(A);}else{I.success.apply(I.scope,[A]);}}this.successEvent.fire(A);if(B.successEvent){B.successEvent.fire(A);}}else{switch(E){case 12002:case 12029:case 12030:case 12031:case 12152:case 13030:A=this.createExceptionObject(B.tId,G,(D?D:false));if(I&&I.failure){if(!I.scope){I.failure(A);}else{I.failure.apply(I.scope,[A]);}}break;default:A=(B.xdr)?B.response:this.createResponseObject(B,G);if(I&&I.failure){if(!I.scope){I.failure(A);}else{I.failure.apply(I.scope,[A]);}}}this.failureEvent.fire(A);if(B.failureEvent){B.failureEvent.fire(A);}}this.releaseObject(B);A=null;},createResponseObject:function(A,G){var D={},I={},E,C,F,B;try{C=A.conn.getAllResponseHeaders();F=C.split("\n");for(E=0;E<F.length;E++){B=F[E].indexOf(":");if(B!=-1){I[F[E].substring(0,B)]=YAHOO.lang.trim(F[E].substring(B+2));}}}catch(H){}D.tId=A.tId;D.status=(A.conn.status==1223)?204:A.conn.status;D.statusText=(A.conn.status==1223)?"No Content":A.conn.statusText;D.getResponseHeader=I;D.getAllResponseHeaders=C;D.responseText=A.conn.responseText;D.responseXML=A.conn.responseXML;if(G){D.argument=G;}return D;},createExceptionObject:function(H,D,A){var F=0,G="communication failure",C=-1,B="transaction aborted",E={};E.tId=H;if(A){E.status=C;E.statusText=B;}else{E.status=F;E.statusText=G;}if(D){E.argument=D;}return E;},initHeader:function(A,D,C){var B=(C)?this._default_headers:this._http_headers;B[A]=D;if(C){this._has_default_headers=true;}else{this._has_http_headers=true;}},setHeader:function(A){var B;if(this._has_default_headers){for(B in this._default_headers){if(YAHOO.lang.hasOwnProperty(this._default_headers,B)){A.conn.setRequestHeader(B,this._default_headers[B]);}}}if(this._has_http_headers){for(B in this._http_headers){if(YAHOO.lang.hasOwnProperty(this._http_headers,B)){A.conn.setRequestHeader(B,this._http_headers[B]);
}}this._http_headers={};this._has_http_headers=false;}},resetDefaultHeaders:function(){this._default_headers={};this._has_default_headers=false;},abort:function(E,G,A){var D,B=(G&&G.argument)?G.argument:null;E=E||{};if(E.conn){if(E.xhr){if(this.isCallInProgress(E)){E.conn.abort();window.clearInterval(this._poll[E.tId]);delete this._poll[E.tId];if(A){window.clearTimeout(this._timeOut[E.tId]);delete this._timeOut[E.tId];}D=true;}}else{if(E.xdr){E.conn.abort(E.tId);D=true;}}}else{if(E.upload){var C="yuiIO"+E.tId;var F=document.getElementById(C);if(F){YAHOO.util.Event.removeListener(F,"load");document.body.removeChild(F);if(A){window.clearTimeout(this._timeOut[E.tId]);delete this._timeOut[E.tId];}D=true;}}else{D=false;}}if(D===true){this.abortEvent.fire(E,B);if(E.abortEvent){E.abortEvent.fire(E,B);}this.handleTransactionResponse(E,G,true);}return D;},isCallInProgress:function(A){A=A||{};if(A.xhr&&A.conn){return A.conn.readyState!==4&&A.conn.readyState!==0;}else{if(A.xdr&&A.conn){return A.conn.isCallInProgress(A.tId);}else{if(A.upload===true){return document.getElementById("yuiIO"+A.tId)?true:false;}else{return false;}}}},releaseObject:function(A){if(A&&A.conn){A.conn=null;A=null;}}};YAHOO.register("connection_core",YAHOO.util.Connect,{version:"2.8.0r4",build:"2449"});