7 lines
4.0 KiB
JavaScript
7 lines
4.0 KiB
JavaScript
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/*
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Copyright (c) 2008, Yahoo! Inc. All rights reserved.
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Code licensed under the BSD License:
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http://developer.yahoo.net/yui/license.txt
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version: 2.6.0
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*/
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YAHOO.util.Get=function(){var M={},L=0,R=0,E=false,N=YAHOO.env.ua,S=YAHOO.lang;var J=function(W,T,X){var U=X||window,Y=U.document,Z=Y.createElement(W);for(var V in T){if(T[V]&&YAHOO.lang.hasOwnProperty(T,V)){Z.setAttribute(V,T[V]);}}return Z;};var I=function(T,U,W){var V=W||"utf-8";return J("link",{"id":"yui__dyn_"+(R++),"type":"text/css","charset":V,"rel":"stylesheet","href":T},U);};var P=function(T,U,W){var V=W||"utf-8";return J("script",{"id":"yui__dyn_"+(R++),"type":"text/javascript","charset":V,"src":T},U);};var A=function(T,U){return{tId:T.tId,win:T.win,data:T.data,nodes:T.nodes,msg:U,purge:function(){D(this.tId);}};};var B=function(T,W){var U=M[W],V=(S.isString(T))?U.win.document.getElementById(T):T;if(!V){Q(W,"target node not found: "+T);}return V;};var Q=function(W,V){var T=M[W];if(T.onFailure){var U=T.scope||T.win;T.onFailure.call(U,A(T,V));}};var C=function(W){var T=M[W];T.finished=true;if(T.aborted){var V="transaction "+W+" was aborted";Q(W,V);return ;}if(T.onSuccess){var U=T.scope||T.win;T.onSuccess.call(U,A(T));}};var O=function(V){var T=M[V];if(T.onTimeout){var U=T.context||T;T.onTimeout.call(U,A(T));}};var G=function(V,Z){var U=M[V];if(U.timer){U.timer.cancel();}if(U.aborted){var X="transaction "+V+" was aborted";Q(V,X);return ;}if(Z){U.url.shift();if(U.varName){U.varName.shift();}}else{U.url=(S.isString(U.url))?[U.url]:U.url;if(U.varName){U.varName=(S.isString(U.varName))?[U.varName]:U.varName;}}var c=U.win,b=c.document,a=b.getElementsByTagName("head")[0],W;if(U.url.length===0){if(U.type==="script"&&N.webkit&&N.webkit<420&&!U.finalpass&&!U.varName){var Y=P(null,U.win,U.charset);Y.innerHTML='YAHOO.util.Get._finalize("'+V+'");';U.nodes.push(Y);a.appendChild(Y);}else{C(V);}return ;}var T=U.url[0];if(!T){U.url.shift();return G(V);}if(U.timeout){U.timer=S.later(U.timeout,U,O,V);}if(U.type==="script"){W=P(T,c,U.charset);}else{W=I(T,c,U.charset);}F(U.type,W,V,T,c,U.url.length);U.nodes.push(W);if(U.insertBefore){var e=B(U.insertBefore,V);if(e){e.parentNode.insertBefore(W,e);}}else{a.appendChild(W);}if((N.webkit||N.gecko)&&U.type==="css"){G(V,T);}};var K=function(){if(E){return ;}E=true;for(var T in M){var U=M[T];if(U.autopurge&&U.finished){D(U.tId);delete M[T];}}E=false;};var D=function(a){var X=M[a];if(X){var Z=X.nodes,T=Z.length,Y=X.win.document,W=Y.getElementsByTagName("head")[0];if(X.insertBefore){var V=B(X.insertBefore,a);if(V){W=V.parentNode;}}for(var U=0;U<T;U=U+1){W.removeChild(Z[U]);}X.nodes=[];}};var H=function(U,T,V){var X="q"+(L++);V=V||{};if(L%YAHOO.util.Get.PURGE_THRESH===0){K();}M[X]=S.merge(V,{tId:X,type:U,url:T,finished:false,aborted:false,nodes:[]});var W=M[X];W.win=W.win||window;W.scope=W.scope||W.win;W.autopurge=("autopurge" in W)?W.autopurge:(U==="script")?true:false;S.later(0,W,G,X);return{tId:X};};var F=function(c,X,W,U,Y,Z,b){var a=b||G;if(N.ie){X.onreadystatechange=function(){var d=this.readyState;if("loaded"===d||"complete"===d){X.onreadystatechange=null;a(W,U);}};}else{if(N.webkit){if(c==="script"){if(N.webkit>=420){X.addEventListener("load",function(){a(W,U);});}else{var T=M[W];if(T.varName){var V=YAHOO.util.Get.POLL_FREQ;T.maxattempts=YAHOO.util.Get.TIMEOUT/V;T.attempts=0;T._cache=T.varName[0].split(".");T.timer=S.later(V,T,function(j){var f=this._cache,e=f.length,d=this.win,g;for(g=0;g<e;g=g+1){d=d[f[g]];if(!d){this.attempts++;if(this.attempts++>this.maxattempts){var h="Over retry limit, giving up";T.timer.cancel();Q(W,h);}else{}return ;}}T.timer.cancel();a(W,U);},null,true);}else{S.later(YAHOO.util.Get.POLL_FREQ,null,a,[W,U]);}}}}else{X.onload=function(){a(W,U);};}}};return{POLL_FREQ:10,PURGE_THRESH:20,TIMEOUT:2000,_finalize:function(T){S.later(0,null,C,T);},abort:function(U){var V=(S.isString(U))?U:U.tId;var T=M[V];if(T){T.aborted=true;}},script:function(T,U){return H("script",T,U);},css:function(T,U){return H("css",T,U);}};}();YAHOO.register("get",YAHOO.util.Get,{version:"2.6.0",build:"1321"});
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