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119 lines
3.1 KiB
JavaScript
119 lines
3.1 KiB
JavaScript
14 years ago
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/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojo.io.script"]){
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dojo._hasResource["dojo.io.script"]=true;
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dojo.provide("dojo.io.script");
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(function(){
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var _1=dojo.isIE?"onreadystatechange":"load",_2=/complete|loaded/;
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dojo.io.script={get:function(_3){
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var _4=this._makeScriptDeferred(_3);
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var _5=_4.ioArgs;
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dojo._ioAddQueryToUrl(_5);
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dojo._ioNotifyStart(_4);
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if(this._canAttach(_5)){
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var _6=this.attach(_5.id,_5.url,_3.frameDoc);
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if(!_5.jsonp&&!_5.args.checkString){
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var _7=dojo.connect(_6,_1,function(_8){
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if(_8.type=="load"||_2.test(_6.readyState)){
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dojo.disconnect(_7);
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_5.scriptLoaded=_8;
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}
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});
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}
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}
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dojo._ioWatch(_4,this._validCheck,this._ioCheck,this._resHandle);
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return _4;
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},attach:function(id,_9,_a){
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var _b=(_a||dojo.doc);
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var _c=_b.createElement("script");
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_c.type="text/javascript";
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_c.src=_9;
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_c.id=id;
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_c.charset="utf-8";
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return _b.getElementsByTagName("head")[0].appendChild(_c);
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},remove:function(id,_d){
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dojo.destroy(dojo.byId(id,_d));
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if(this["jsonp_"+id]){
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delete this["jsonp_"+id];
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}
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},_makeScriptDeferred:function(_e){
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var _f=dojo._ioSetArgs(_e,this._deferredCancel,this._deferredOk,this._deferredError);
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var _10=_f.ioArgs;
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_10.id=dojo._scopeName+"IoScript"+(this._counter++);
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_10.canDelete=false;
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_10.jsonp=_e.callbackParamName||_e.jsonp;
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if(_10.jsonp){
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_10.query=_10.query||"";
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if(_10.query.length>0){
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_10.query+="&";
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}
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_10.query+=_10.jsonp+"="+(_e.frameDoc?"parent.":"")+dojo._scopeName+".io.script.jsonp_"+_10.id+"._jsonpCallback";
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_10.frameDoc=_e.frameDoc;
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_10.canDelete=true;
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_f._jsonpCallback=this._jsonpCallback;
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this["jsonp_"+_10.id]=_f;
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}
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return _f;
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},_deferredCancel:function(dfd){
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dfd.canceled=true;
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if(dfd.ioArgs.canDelete){
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dojo.io.script._addDeadScript(dfd.ioArgs);
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}
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},_deferredOk:function(dfd){
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var _11=dfd.ioArgs;
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if(_11.canDelete){
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dojo.io.script._addDeadScript(_11);
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}
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return _11.json||_11.scriptLoaded||_11;
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},_deferredError:function(_12,dfd){
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if(dfd.ioArgs.canDelete){
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if(_12.dojoType=="timeout"){
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dojo.io.script.remove(dfd.ioArgs.id,dfd.ioArgs.frameDoc);
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}else{
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dojo.io.script._addDeadScript(dfd.ioArgs);
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}
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}
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return _12;
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},_deadScripts:[],_counter:1,_addDeadScript:function(_13){
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dojo.io.script._deadScripts.push({id:_13.id,frameDoc:_13.frameDoc});
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_13.frameDoc=null;
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},_validCheck:function(dfd){
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var _14=dojo.io.script;
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var _15=_14._deadScripts;
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if(_15&&_15.length>0){
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for(var i=0;i<_15.length;i++){
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_14.remove(_15[i].id,_15[i].frameDoc);
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_15[i].frameDoc=null;
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}
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dojo.io.script._deadScripts=[];
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}
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return true;
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},_ioCheck:function(dfd){
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var _16=dfd.ioArgs;
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if(_16.json||(_16.scriptLoaded&&!_16.args.checkString)){
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return true;
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}
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var _17=_16.args.checkString;
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if(_17&&eval("typeof("+_17+") != 'undefined'")){
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return true;
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}
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return false;
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},_resHandle:function(dfd){
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if(dojo.io.script._ioCheck(dfd)){
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dfd.callback(dfd);
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}else{
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dfd.errback(new Error("inconceivable dojo.io.script._resHandle error"));
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}
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},_canAttach:function(_18){
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return true;
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},_jsonpCallback:function(_19){
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this.ioArgs.json=_19;
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}};
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})();
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}
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