/*
	Copyright (c) 2004-2009, The Dojo Foundation All Rights Reserved.
	Available via Academic Free License >= 2.1 OR the modified BSD license.
	see: http://dojotoolkit.org/license for details
*/


if(!dojo._hasResource["dojox.xmpp.bosh"]){dojo._hasResource["dojox.xmpp.bosh"]=true;dojo.provide("dojox.xmpp.bosh");dojo.require("dojo.io.script");dojo.require("dojo.io.iframe");dojo.require("dojox.xml.parser");dojox.xmpp.bosh={transportIframes:[],initialize:function(_1){this.transportIframes=[];var _2=dojox._scopeName+".xmpp.bosh";var c=dojo.connect(dojo.getObject(_2),"_iframeOnload",this,function(_3){if(_3==0){_1.load();dojo.disconnect(c);}});for(var i=0;i<_1.iframes;i++){var _4="xmpp-transport-"+i;var _5=dojo.byId("xmpp-transport-"+i);if(_5){if(window[_4]){window[_4]=null;}if(window.frames[_4]){window.frames[_4]=null;}dojo.destroy(_5);}_5=dojo.io.iframe.create("xmpp-transport-"+i,_2+"._iframeOnload("+i+");");this.transportIframes.push(_5);}},_iframeOnload:function(_6){var _7=dojo.io.iframe.doc(dojo.byId("xmpp-transport-"+_6));_7.write("<script>var isLoaded=true; var rid=0; var transmiting=false; function _BOSH_(msg) { transmiting=false; parent.dojox.xmpp.bosh.handle(msg, rid); } </script>");},findOpenIframe:function(){for(var i=0;i<this.transportIframes.length;i++){var _8=this.transportIframes[i];var _9=_8.contentWindow;if(_9.isLoaded&&!_9.transmiting){return _8;}}return false;},handle:function(_a,_b){var _c=this["rid"+_b];var _d=dojox.xml.parser.parse(_a,"text/xml");if(_d){_c.ioArgs.xmppMessage=_d;}else{_c.errback(new Error("Recieved bad document from server: "+_a));}},get:function(_e){var _f=this.findOpenIframe();var _10=dojo.io.iframe.doc(_f);_e.frameDoc=_10;var dfd=this._makeScriptDeferred(_e);var _11=dfd.ioArgs;_f.contentWindow.rid=_11.rid;_f.contentWindow.transmiting=true;dojo._ioAddQueryToUrl(_11);dojo._ioNotifyStart(dfd);dojo.io.script.attach(_11.id,_11.url,_10);dojo._ioWatch(dfd,this._validCheck,this._ioCheck,this._resHandle);return dfd;},remove:function(id,_12){dojo.destroy(dojo.byId(id,_12));if(this[id]){delete this[id];}},_makeScriptDeferred:function(_13){var dfd=dojo._ioSetArgs(_13,this._deferredCancel,this._deferredOk,this._deferredError);var _14=dfd.ioArgs;_14.id="rid"+_13.rid;_14.rid=_13.rid;_14.canDelete=true;_14.frameDoc=_13.frameDoc;this[_14.id]=dfd;return dfd;},_deferredCancel:function(dfd){dfd.canceled=true;if(dfd.ioArgs.canDelete){dojox.xmpp.bosh._addDeadScript(dfd.ioArgs);}},_deferredOk:function(dfd){var _15=dfd.ioArgs;if(_15.canDelete){dojox.xmpp.bosh._addDeadScript(_15);}return _15.xmppMessage||_15;},_deferredError:function(_16,dfd){if(dfd.ioArgs.canDelete){if(_16.dojoType=="timeout"){dojox.xmpp.bosh.remove(dfd.ioArgs.id,dfd.ioArgs.frameDoc);}else{dojox.xmpp.bosh._addDeadScript(dfd.ioArgs);}}return _16;},_deadScripts:[],_addDeadScript:function(_17){dojox.xmpp.bosh._deadScripts.push({id:_17.id,frameDoc:_17.frameDoc});_17.frameDoc=null;},_validCheck:function(dfd){var _18=dojox.xmpp.bosh;var _19=_18._deadScripts;if(_19&&_19.length>0){for(var i=0;i<_19.length;i++){_18.remove(_19[i].id,_19[i].frameDoc);_19[i].frameDoc=null;}dojox.xmpp.bosh._deadScripts=[];}return true;},_ioCheck:function(dfd){var _1a=dfd.ioArgs;if(_1a.xmppMessage){return true;}return false;},_resHandle:function(dfd){if(dojox.xmpp.bosh._ioCheck(dfd)){dfd.callback(dfd);}else{dfd.errback(new Error("inconceivable dojox.xmpp.bosh._resHandle error"));}}};}