lib/dojo/io/script.js

   1 /*
   2         Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
   3         Available via Academic Free License >= 2.1 OR the modified BSD license.
   4         see: http://dojotoolkit.org/license for details
   5 */
   6
   7 //>>built
   8 define("dojo/io/script",["../main"],function(_1){_1.getObject("io",true,_1);var _2=_1.isIE?"onreadystatechange":"load",_3=/complete|loaded/;_1.io.script={get:function(_4){var _5=this._makeScriptDeferred(_4);var _6=_5.ioArgs;_1._ioAddQueryToUrl(_6);_1._ioNotifyStart(_5);if(this._canAttach(_6)){var _7=this.attach(_6.id,_6.url,_4.frameDoc);if(!_6.jsonp&&!_6.args.checkString){var _8=_1.connect(_7,_2,function(_9){if(_9.type=="load"||_3.test(_7.readyState)){_1.disconnect(_8);_6.scriptLoaded=_9;}});}}_1._ioWatch(_5,this._validCheck,this._ioCheck,this._resHandle);return _5;},attach:function(id,_a,_b){var _c=(_b||_1.doc);var _d=_c.createElement("script");_d.type="text/javascript";_d.src=_a;_d.id=id;_d.async=true;_d.charset="utf-8";return _c.getElementsByTagName("head")[0].appendChild(_d);},remove:function(id,_e){_1.destroy(_1.byId(id,_e));if(this["jsonp_"+id]){delete this["jsonp_"+id];}},_makeScriptDeferred:function(_f){var dfd=_1._ioSetArgs(_f,this._deferredCancel,this._deferredOk,this._deferredError);var _10=dfd.ioArgs;_10.id=_1._scopeName+"IoScript"+(this._counter++);_10.canDelete=false;_10.jsonp=_f.callbackParamName||_f.jsonp;if(_10.jsonp){_10.query=_10.query||"";if(_10.query.length>0){_10.query+="&";}_10.query+=_10.jsonp+"="+(_f.frameDoc?"parent.":"")+_1._scopeName+".io.script.jsonp_"+_10.id+"._jsonpCallback";_10.frameDoc=_f.frameDoc;_10.canDelete=true;dfd._jsonpCallback=this._jsonpCallback;this["jsonp_"+_10.id]=dfd;}return dfd;},_deferredCancel:function(dfd){dfd.canceled=true;if(dfd.ioArgs.canDelete){_1.io.script._addDeadScript(dfd.ioArgs);}},_deferredOk:function(dfd){var _11=dfd.ioArgs;if(_11.canDelete){_1.io.script._addDeadScript(_11);}return _11.json||_11.scriptLoaded||_11;},_deferredError:function(_12,dfd){if(dfd.ioArgs.canDelete){if(_12.dojoType=="timeout"){_1.io.script.remove(dfd.ioArgs.id,dfd.ioArgs.frameDoc);}else{_1.io.script._addDeadScript(dfd.ioArgs);}}return _12;},_deadScripts:[],_counter:1,_addDeadScript:function(_13){_1.io.script._deadScripts.push({id:_13.id,frameDoc:_13.frameDoc});_13.frameDoc=null;},_validCheck:function(dfd){var _14=_1.io.script;var _15=_14._deadScripts;if(_15&&_15.length>0){for(var i=0;i<_15.length;i++){_14.remove(_15[i].id,_15[i].frameDoc);_15[i].frameDoc=null;}_1.io.script._deadScripts=[];}return true;},_ioCheck:function(dfd){var _16=dfd.ioArgs;if(_16.json||(_16.scriptLoaded&&!_16.args.checkString)){return true;}var _17=_16.args.checkString;return _17&&eval("typeof("+_17+") != 'undefined'");},_resHandle:function(dfd){if(_1.io.script._ioCheck(dfd)){dfd.callback(dfd);}else{dfd.errback(new Error("inconceivable dojo.io.script._resHandle error"));}},_canAttach:function(_18){return true;},_jsonpCallback:function(_19){this.ioArgs.json=_19;}};return _1.io.script;});