loader_xd.js

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	}
};


dojo._xdInitExtraLocales = function(){
	// Simulate the extra locale work that dojo.requireLocalization does.

	var extra = djConfig.extraLocale;
	if(extra){
		if(!extra instanceof Array){
			extra = [extra];
		}

		dojo._xdReqLoc = dojo.xdRequireLocalization;
		dojo.xdRequireLocalization = function(m, b, locale, fLocales){
			dojo._xdReqLoc(m,b,locale, fLocales);
			if(locale){return;}
			for(var i=0; i<extra.length; i++){
				dojo._xdReqLoc(m,b,extra[i], fLocales);
			}
		};
	}
}

dojo._xdBundleMap = {};

dojo.xdRequireLocalization = function(/*String*/moduleName, /*String*/bundleName, /*String?*/locale, /*String*/availableFlatLocales){
	//summary: Internal xd loader function. The xd version of dojo.requireLocalization.
	

	//Account for allowing multiple extra locales. Do this here inside the function
	//since dojo._xdInitExtraLocales() depends on djConfig being set up, but that only
	//happens after hostenv_browser runs. loader_xd has to come before hostenv_browser
	//though since hostenv_browser can do a dojo.require for the debug module.
	if(dojo._xdInitExtraLocales){
		dojo._xdInitExtraLocales();
		dojo._xdInitExtraLocales = null;
		dojo.xdRequireLocalization.apply(dojo, arguments);
		return;
	}

	var locales = availableFlatLocales.split(",");
	
	//Find the best-match locale to load.
	//Assumes dojo.i18n has already been loaded. This is true for xdomain builds,
	//since it is included in dojo.xd.js.
	var jsLoc = dojo.i18n.normalizeLocale(locale);

	var bestLocale = "";
	for(var i = 0; i < locales.length; i++){
		//Locale must match from start of string.
		if(jsLoc.indexOf(locales[i]) == 0){
			if(locales[i].length > bestLocale.length){
				bestLocale = locales[i];
			}
		}
	}

	var fixedBestLocale = bestLocale.replace('-', '_');
	//See if the bundle we are going to use is already loaded.
 	var bundleResource = dojo.getObject([moduleName, "nls", bundleName].join("."));
	if(bundleResource && bundleResource[fixedBestLocale]){
		bundle[jsLoc.replace('-', '_')] = bundleResource[fixedBestLocale];
	}else{
		//Need to remember what locale we wanted and which one we actually use.
		//Then when we load the one we are actually using, use that bundle for the one
		//we originally wanted.
		var mapName = [moduleName, (fixedBestLocale||"root"), bundleName].join(".");
		var bundleMap = dojo._xdBundleMap[mapName];
		if(!bundleMap){
			bundleMap = dojo._xdBundleMap[mapName] = {};
		}
		bundleMap[jsLoc.replace('-', '_')] = true;
		
		//Do just a normal dojo.require so the resource tracking stuff works as usual.
		dojo.require(moduleName + ".nls" + (bestLocale ? "." + bestLocale : "") + "." + bundleName);
	}
}

// Replace dojo.requireLocalization with a wrapper
dojo._xdRealRequireLocalization = dojo.requireLocalization;
dojo.requireLocalization = function(/*String*/moduleName, /*String*/bundleName, /*String?*/locale, /*String*/availableFlatLocales){
    // summary: loads a bundle intelligently based on whether the module is 
    // local or xd. Overrides the local-case implementation.
    
    var modulePath = this.moduleUrl(moduleName).toString();
    if (this._xdIsXDomainPath(modulePath)) {
        // call cross-domain loader
        return dojo.xdRequireLocalization.apply(dojo, arguments);
    } else {
        // call local-loader
        return dojo._xdRealRequireLocalization.apply(dojo, arguments);
    }
}

//This is a bit brittle: it has to know about the dojo methods that deal with dependencies
//It would be ideal to intercept the actual methods and do something fancy at that point,
//but I have concern about knowing which provide to match to the dependency in that case,
//since scripts can load whenever they want, and trigger new calls to dojo._xdResourceLoaded().
dojo._xdUnpackDependency = function(/*Array*/dep){
	//summary: Internal xd loader function. Determines what to do with a dependency
	//that was listed in an xd version of a module contents.

	//Extract the dependency(ies).
	var newDeps = null;
	var newAfterDeps = null;
	switch(dep[0]){
		case "requireIf":
		case "requireAfterIf":
			//First arg (dep[1]) is the test. Depedency is dep[2].
			if(dep[1] === true){
				newDeps = [{name: dep[2], content: null}];
			}
			break;
		case "platformRequire":
			var modMap = dep[1];
			var common = modMap["common"]||[];
			var newDeps = (modMap[dojo.hostenv.name_]) ? common.concat(modMap[dojo.hostenv.name_]||[]) : common.concat(modMap["default"]||[]);	
			//Flatten the array of arrays into a one-level deep array.
			//Each result could be an array of 3 elements  (the 3 arguments to dojo.require).
			//We only need the first one.
			if(newDeps){
				for(var i = 0; i < newDeps.length; i++){
					if(newDeps[i] instanceof Array){
						newDeps[i] = {name: newDeps[i][0], content: null};
					}else{
						newDeps[i] = {name: newDeps[i], content: null};
					}
				}
			}
			break;
		case "require":
			//Just worry about dep[1]
			newDeps = [{name: dep[1], content: null}];
			break;
		case "i18n._preloadLocalizations":
			//We can eval these immediately, since they load i18n bundles.
			//Since i18n bundles have no dependencies, whenever they are loaded
			//in a script tag, they are evaluated immediately, so we do not have to
			//treat them has an explicit dependency for the dependency mapping.
			//We can call it immediately since dojo.i18n is part of dojo.xd.js.
			dojo.i18n._preloadLocalizations.apply(dojo.i18n._preloadLocalizations, dep.slice(1));
			break;
	}

	//The requireIf and requireAfterIf needs to be evaluated after the current resource is evaluated.
	if(dep[0] == "requireAfterIf" || dep[0] == "requireIf"){
		newAfterDeps = newDeps;
		newDeps = null;
	}
	return {requires: newDeps, requiresAfter: newAfterDeps}; //Object
}

dojo._xdWalkReqs = function(){
	//summary: Internal xd loader function. 
	//Walks the requires and evaluates module resource contents in
	//the right order.
	var reqChain = null;
	var req;
	for(var i = 0; i < this._xdOrderedReqs.length; i++){
		req = this._xdOrderedReqs[i];
		if(this._xdDepMap[req]){
			reqChain = [req];
			reqChain[req] = true; //Allow for fast lookup of the req in the array
			this._xdEvalReqs(reqChain);
		}
	}
}

dojo._xdEvalReqs = function(/*Array*/reqChain){
	//summary: Internal xd loader function. 
	//Does a depth first, breadth second search and eval of required modules.
	while(reqChain.length > 0){
		var req = reqChain[reqChain.length - 1];
		var res = this._xdDepMap[req];
		if(res){
			//Trace down any requires for this resource.
			//START dojo._xdTraceReqs() inlining for small Safari 2.0 call stack
			var reqs = res.requires;
			if(reqs && reqs.length > 0){
				var nextReq;
				for(var i = 0; i < reqs.length; i++){
					nextReq = reqs[i].name;
					if(nextReq && !reqChain[nextReq]){
						//New req depedency. Follow it down.
						reqChain.push(nextReq);
						reqChain[nextReq] = true;
						this._xdEvalReqs(reqChain);
					}
				}
			}
			//END dojo._xdTraceReqs() inlining for small Safari 2.0 call stack

			//Evaluate the resource.
			var contents = this._xdContents[res.contentIndex];
			if(!contents.isDefined){
				var content = contents.content;
				content["resourceName"] = contents["resourceName"];
				content["resourcePath"] = contents["resourcePath"];
				this._xdDefList.push(content);
				contents.isDefined = true;
			}
			this._xdDepMap[req] = null;

			//Trace down any requireAfters for this resource.
			//START dojo._xdTraceReqs() inlining for small Safari 2.0 call stack
			var reqs = res.requiresAfter;
			if(reqs && reqs.length > 0){
				var nextReq;
				for(var i = 0; i < reqs.length; i++){
					nextReq = reqs[i].name;
					if(nextReq && !reqChain[nextReq]){
						//New req depedency. Follow it down.
						reqChain.push(nextReq);
						reqChain[nextReq] = true;
						this._xdEvalReqs(reqChain);
					}
				}
			}
			//END dojo._xdTraceReqs() inlining for small Safari 2.0 call stack
		}

		//Done with that require. Remove it and go to the next one.
		reqChain.pop();
	}
}

dojo._xdClearInterval = function(){
	//summary: Internal xd loader function.
	//Clears the interval timer used to check on the
	//status of in-flight xd module resource requests.
	clearInterval(this._xdTimer);
	this._xdTimer = 0;
}

dojo._xdWatchInFlight = function(){
	//summary: Internal xd loader function.
	//Monitors in-flight requests for xd module resources.

	var noLoads = "";
	var waitInterval = (djConfig.xdWaitSeconds || 15) * 1000;
	var expired = (this._xdStartTime + waitInterval) < (new Date()).getTime();

	//If any xdInFlight are true, then still waiting for something to load.
	//Come back later. If we timed out, report the things that did not load.
	for(var param in this._xdInFlight){
		if(this._xdInFlight[param] === true){
			if(expired){
				noLoads += param + " ";
			}else{
				return;
			}
		}
	}

	//All done. Clean up and notify.
	this._xdClearInterval();

	if(expired){
		throw "Could not load cross-domain resources: " + noLoads;
	}

	this._xdWalkReqs();
	
	var defLength = this._xdDefList.length;
	for(var i= 0; i < defLength; i++){
		var content = dojo._xdDefList[i];
		if(djConfig["debugAtAllCosts"] && content["resourceName"]){
			if(!this["_xdDebugQueue"]){
				this._xdDebugQueue = [];
			}
			this._xdDebugQueue.push({resourceName: content.resourceName, resourcePath: content.resourcePath});
		}else{
			//Evaluate the resource to bring it into being.
			//Pass dojo in so that later, to support multiple versions of dojo
			//in a page, we can pass which version of dojo to use.	
			content(dojo);
		}
	}

	//Evaluate any resources that were not evaled before.
	//This normally shouldn't happen with proper dojo.provide and dojo.require
	//usage, but providing it just in case. Note that these may not be executed
	//in the original order that the developer intended.
	//Pass dojo in so that later, to support multiple versions of dojo
	//in a page, we can pass which version of dojo to use.
	for(var i = 0; i < this._xdContents.length; i++){
		var current = this._xdContents[i];
		if(current.content && !current.isDefined){
			current.content(dojo);
		}
	}

	//Clean up for the next round of xd loading.
	this._xdReset();

	if(this["_xdDebugQueue"] && this._xdDebugQueue.length > 0){
		this._xdDebugFileLoaded();
	}else{
		this._xdNotifyLoaded();
	}
}

dojo._xdNotifyLoaded = function(){
	//Clear inflight count so we will finally do finish work.
	this._inFlightCount = 0; 
	
	//Only trigger call loaded if dj_load_init has run. 
	if(this._initFired && !this._loadNotifying){ 
		this._callLoaded();
	}
}

}