source: [view]
//Cross-domain resource loader.
dojo.provide("dojo._base._loader.loader_xd");
dojo._xdReset = function(){
//summary: Internal xd loader function. Resets the xd state.
//This flag indicates where or not we have crossed into xdomain territory. Once any resource says
//it is cross domain, then the rest of the resources have to be treated as xdomain because we need
//to evaluate resources in order. If there is a xdomain resource followed by a xhr resource, we can't load
//the xhr resource until the one before it finishes loading. The text of the xhr resource will be converted
//to match the format for a xd resource and put in the xd load queue.
dojo._isXDomain = dojo.config.useXDomain || false;
dojo._xdClearInterval();
dojo._xdInFlight = {};
dojo._xdOrderedReqs = [];
dojo._xdDepMap = {};
dojo._xdContents = [];
dojo._xdDefList = [];
}
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.
if(dojo._xdTimer){
clearInterval(dojo._xdTimer);
dojo._xdTimer = 0;
}
}
//Call reset immediately to set the state.
dojo._xdReset();
dojo._xdCreateResource = function(/*String*/contents, /*String*/resourceName, /*String*/resourcePath){
//summary: Internal xd loader function. Creates an xd module source given an
//non-xd module contents.
//Remove comments. Not perfect, but good enough for dependency resolution.
var depContents = contents.replace(/(\/\*([\s\S]*?)\*\/|\/\/(.*)$)/mg , "");
//Find dependencies.
var deps = [];
var depRegExp = /dojo.(require|requireIf|provide|requireAfterIf|platformRequire|requireLocalization)\s*\(([\w\W]*?)\)/mg;
var match;
while((match = depRegExp.exec(depContents)) != null){
if(match[1] == "requireLocalization"){
//Need to load the local bundles asap, since they are not
//part of the list of modules watched for loading.
eval(match[0]);
}else{
deps.push('"' + match[1] + '", ' + match[2]);
}
}
//Create resource object and the call to _xdResourceLoaded.
var output = [];
output.push(dojo._scopeName + "._xdResourceLoaded(function(" + dojo._scopePrefixArgs + "){\n");
//See if there are any dojo.loadInit calls
var loadInitCalls = dojo._xdExtractLoadInits(contents);
if(loadInitCalls){
//Adjust fileContents since extractLoadInits removed something.
contents = loadInitCalls[0];
//Add any loadInit calls to the top of the xd file.
for(var i = 1; i < loadInitCalls.length; i++){
output.push(loadInitCalls[i] + ";\n");
}
}
output.push("return {");
//Add dependencies
if(deps.length > 0){
output.push("depends: [");
for(i = 0; i < deps.length; i++){
if(i > 0){
output.push(",\n");
}
output.push("[" + deps[i] + "]");
}
output.push("],");
}
//Add the contents of the file inside a function.
//Pass in scope arguments so we can support multiple versions of the
//same module on a page.
output.push("\ndefineResource: function(" + dojo._scopePrefixArgs + "){");
//Don't put in the contents in the debugAtAllCosts case
//since the contents may have syntax errors. Let those
//get pushed up when the script tags are added to the page
//in the debugAtAllCosts case.
if(!dojo.config["debugAtAllCosts"] || resourceName == "dojo._base._loader.loader_debug"){
output.push(contents);
}
//Add isLocal property so we know if we have to do something different
//in debugAtAllCosts situations.
output.push("\n}, resourceName: '" + resourceName + "', resourcePath: '" + resourcePath + "'};});");
return output.join(""); //String
}
dojo._xdExtractLoadInits = function(/*String*/fileContents){
//Extracts
var regexp = /dojo.loadInit\s*\(/g;
regexp.lastIndex = 0;
var parenRe = /[\(\)]/g;
parenRe.lastIndex = 0;
var results = [];
var matches;
while((matches = regexp.exec(fileContents))){
//Find end of the call by finding the matching end paren
parenRe.lastIndex = regexp.lastIndex;
var matchCount = 1;
var parenMatch;
while((parenMatch = parenRe.exec(fileContents))){
if(parenMatch[0] == ")"){
matchCount -= 1;
}else{
matchCount += 1;
}
if(matchCount == 0){
break;
}
}
if(matchCount != 0){
throw "unmatched paren around character " + parenRe.lastIndex + " in: " + fileContents;
}
//Put the master matching string in the results.
var startIndex = regexp.lastIndex - matches[0].length;
results.push(fileContents.substring(startIndex, parenRe.lastIndex));
//Remove the matching section.
var remLength = parenRe.lastIndex - startIndex;
fileContents = fileContents.substring(0, startIndex) + fileContents.substring(parenRe.lastIndex, fileContents.length);
//Move the master regexp past the last matching paren point.
regexp.lastIndex = parenRe.lastIndex - remLength;
regexp.lastIndex = parenRe.lastIndex;
}
if(results.length > 0){
results.unshift(fileContents);
}
return (results.length ? results : null);
}
dojo._xdIsXDomainPath = function(/*string*/relpath) {
//summary: Figure out whether the path is local or x-domain
//If there is a colon before the first / then, we have a URL with a protocol.
var colonIndex = relpath.indexOf(":");
var slashIndex = relpath.indexOf("/");
if(colonIndex > 0 && colonIndex < slashIndex || relpath.indexOf("//") === 0){
return true;
}else{
//Is the base script URI-based URL a cross domain URL?
//If so, then the relpath will be evaluated relative to
//baseUrl, and therefore qualify as xdomain.
//Only treat it as xdomain if the page does not have a
//host (file:// url), if the baseUrl does not match the
//current window's domain, or if the baseUrl starts with //.
//If baseUrl starts with // then it probably means that xdomain
//is wanted since it is such a specific path request. This is not completely robust,
//but something more robust would require normalizing the protocol on baseUrl and on the location
//to see if they differ. However, that requires more code, and // as a start path is unusual.
var url = dojo.baseUrl;
colonIndex = url.indexOf(":");
slashIndex = url.indexOf("/");
if(url.indexOf("//") === 0 || (colonIndex > 0 && colonIndex < slashIndex && (!location.host || url.indexOf("http://" + location.host) != 0))){
return true;
}
}
return false;
}
dojo._loadPath = function(/*String*/relpath, /*String?*/module, /*Function?*/cb){
//summary: Internal xd loader function. Overrides loadPath() from loader.js.
//xd loading requires slightly different behavior from loadPath().
var currentIsXDomain = dojo._xdIsXDomainPath(relpath);
dojo._isXDomain |= currentIsXDomain;
var uri = ((relpath.charAt(0) == '/' || relpath.match(/^\w+:/)) ? "" : dojo.baseUrl) + relpath;
try{
return ((!module || dojo._isXDomain) ? dojo._loadUri(uri, cb, currentIsXDomain, module) : dojo._loadUriAndCheck(uri, module, cb)); //Boolean
}catch(e){
console.error(e);
return false; //Boolean
}
}
dojo._xdCharSet = "utf-8";
dojo._loadUri = function(/*String*/uri, /*Function?*/cb, /*boolean*/currentIsXDomain, /*String?*/module){
//summary: Internal xd loader function. Overrides loadUri() from loader.js.
// xd loading requires slightly different behavior from loadPath().
//description: Wanted to override getText(), but it is used by
// the widget code in too many, synchronous ways right now.
if(dojo._loadedUrls[uri]){
return 1; //Boolean
}
//Add the module (resource) to the list of modules.
//Only do this work if we have a modlue name. Otherwise,
//it is a non-xd i18n bundle, which can load immediately and does not
//need to be tracked. Also, don't track dojo.i18n, since it is a prerequisite
//and will be loaded correctly if we load it right away: it has no dependencies.
if(dojo._isXDomain && module && module != "dojo.i18n"){
dojo._xdOrderedReqs.push(module);
//Add to waiting resources if it is an xdomain resource.
//Don't add non-xdomain i18n bundles, those get evaled immediately.
if(currentIsXDomain || uri.indexOf("/nls/") == -1){
dojo._xdInFlight[module] = true;
//Increment inFlightCount
//This will stop the modulesLoaded from firing all the way.
dojo._inFlightCount++;
}
//Start timer
if(!dojo._xdTimer){
if(dojo.isAIR){
dojo._xdTimer = setInterval(function(){dojo._xdWatchInFlight();}, 100);
}else{
dojo._xdTimer = setInterval(dojo._scopeName + "._xdWatchInFlight();", 100);
}
}
dojo._xdStartTime = (new Date()).getTime();
}
if (currentIsXDomain){
//Fix name to be a .xd.fileextension name.
var lastIndex = uri.lastIndexOf('.');
if(lastIndex <= 0){
lastIndex = uri.length - 1;
}
var xdUri = uri.substring(0, lastIndex) + ".xd";
if(lastIndex != uri.length - 1){
xdUri += uri.substring(lastIndex, uri.length);
}
if (dojo.isAIR){
xdUri = xdUri.replace("app:/", "/");
}
//Add to script src
var element = document.createElement("script");
element.type = "text/javascript";
if(dojo._xdCharSet){
element.charset = dojo._xdCharSet;
}
element.src = xdUri;
if(!dojo.headElement){
dojo._headElement = document.getElementsByTagName("head")[0];
//Head element may not exist, particularly in html
//html 4 or tag soup cases where the page does not
//have a head tag in it. Use html element, since that will exist.
//Seems to be an issue mostly with Opera 9 and to lesser extent Safari 2
if(!dojo._headElement){
dojo._headElement = document.getElementsByTagName("html")[0];
}
}
dojo._headElement.appendChild(element);
}else{
var contents = dojo._getText(uri, null, true);
if(contents == null){ return 0; /*boolean*/}
//If this is not xdomain, or if loading a i18n resource bundle, then send it down
//the normal eval/callback path.
if(dojo._isXDomain
&& uri.indexOf("/nls/") == -1
&& module != "dojo.i18n"){
var res = dojo._xdCreateResource(contents, module, uri);
dojo.eval(res);
}else{
if(cb){
contents = '('+contents+')';
}else{
//Only do the scoping if no callback. If a callback is specified,
//it is most likely the i18n bundle stuff.
contents = dojo._scopePrefix + contents + dojo._scopeSuffix;
}
var value = dojo["eval"](contents+"\r\n//@ sourceURL="+uri);
if(cb){
cb(value);
}
}
}
//These steps are done in the non-xd loader version of this function.
//Maintain these steps to fit in with the existing system.
dojo._loadedUrls[uri] = true;
dojo._loadedUrls.push(uri);
return true; //Boolean
}
dojo._xdResourceLoaded = function(/*Object*/res){
//summary: Internal xd loader function. Called by an xd module resource when
//it has been loaded via a script tag.
//Evaluate the function with scopeArgs for multiversion support.
res = res.apply(dojo.global, dojo._scopeArgs);
//Work through dependencies.
var deps = res.depends;
var requireList = null;
var requireAfterList = null;
var provideList = [];
if(deps && deps.length > 0){
var dep = null;
var insertHint = 0;
var attachedResource = false;
for(var i = 0; i < deps.length; i++){
dep = deps[i];
//Look for specific dependency indicators.
if (dep[0] == "provide"){
provideList.push(dep[1]);
}else{
if(!requireList){
requireList = [];
}
if(!requireAfterList){
requireAfterList = [];
}
var unpackedDeps = dojo._xdUnpackDependency(dep);
if(unpackedDeps.requires){
requireList = requireList.concat(unpackedDeps.requires);
}
if(unpackedDeps.requiresAfter){
requireAfterList = requireAfterList.concat(unpackedDeps.requiresAfter);
}
}
//Call the dependency indicator to allow for the normal dojo setup.
//Only allow for one dot reference, for the i18n._preloadLocalizations calls
//(and maybe future, one-dot things).
var depType = dep[0];
var objPath = depType.split(".");
if(objPath.length == 2){
dojo[objPath[0]][objPath[1]].apply(dojo[objPath[0]], dep.slice(1));
}else{
dojo[depType].apply(dojo, dep.slice(1));
}
}
//If loading the debugAtAllCosts module, eval it right away since we need
//its functions to properly load the other modules.
if(provideList.length == 1 && provideList[0] == "dojo._base._loader.loader_debug"){
res.defineResource(dojo);
}else{
//Save off the resource contents for definition later.
var contentIndex = dojo._xdContents.push({
content: res.defineResource,
resourceName: res["resourceName"],
resourcePath: res["resourcePath"],
isDefined: false
}) - 1;
//Add provide/requires to dependency map.
for(i = 0; i < provideList.length; i++){
dojo._xdDepMap[provideList[i]] = { requires: requireList, requiresAfter: requireAfterList, contentIndex: contentIndex };
}
}
//Now update the inflight status for any provided resources in this loaded resource.
//Do this at the very end (in a *separate* for loop) to avoid shutting down the
//inflight timer check too soon.
for(i = 0; i < provideList.length; i++){
dojo._xdInFlight[provideList[i]] = false;
}
}
}
dojo._xdLoadFlattenedBundle = function(/*String*/moduleName, /*String*/bundleName, /*String?*/locale, /*Object*/bundleData){
//summary: Internal xd loader function. Used when loading
//a flattened localized bundle via a script tag.
locale = locale || "root";
var jsLoc = dojo.i18n.normalizeLocale(locale).replace('-', '_');
var bundleResource = [moduleName, "nls", bundleName].join(".");
var bundle = dojo["provide"](bundleResource);
bundle[jsLoc] = bundleData;
//Assign the bundle for the original locale(s) we wanted.
var mapName = [moduleName, jsLoc, bundleName].join(".");
var bundleMap = dojo._xdBundleMap[mapName];
if(bundleMap){
for(var param in bundleMap){
bundle[param] = bundleData;
}
}
};
dojo._xdInitExtraLocales = function(){
// Simulate the extra locale work that dojo.requireLocalization does.
var extra = dojo.config.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 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]){
//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 = dojo.moduleUrl(moduleName).toString();
if (dojo._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"]||[];
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 < dojo._xdOrderedReqs.length; i++){
req = dojo._xdOrderedReqs[i];
if(dojo._xdDepMap[req]){
reqChain = [req];
reqChain[req] = true; //Allow for fast lookup of the req in the array
dojo._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 = dojo._xdDepMap[req];
var i, reqs, nextReq;
if(res){
//Trace down any requires for this resource.
//START dojo._xdTraceReqs() inlining for small Safari 2.0 call stack
reqs = res.requires;
if(reqs && reqs.length > 0){
for(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;
dojo._xdEvalReqs(reqChain);
}
}
}
//END dojo._xdTraceReqs() inlining for small Safari 2.0 call stack
//Evaluate the resource.
var contents = dojo._xdContents[res.contentIndex];
if(!contents.isDefined){
var content = contents.content;
content["resourceName"] = contents["resourceName"];
content["resourcePath"] = contents["resourcePath"];
dojo._xdDefList.push(content);
contents.isDefined = true;
}
dojo._xdDepMap[req] = null;
//Trace down any requireAfters for this resource.
//START dojo._xdTraceReqs() inlining for small Safari 2.0 call stack
reqs = res.requiresAfter;
if(reqs && reqs.length > 0){
for(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;
dojo._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._xdWatchInFlight = function(){
//summary: Internal xd loader function.
//Monitors in-flight requests for xd module resources.
var noLoads = "";
var waitInterval = (dojo.config.xdWaitSeconds || 15) * 1000;
var expired = (dojo._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 dojo._xdInFlight){
if(dojo._xdInFlight[param] === true){
if(expired){
noLoads += param + " ";
}else{
return;
}
}
}
//All done. Clean up and notify.
dojo._xdClearInterval();
if(expired){
throw "Could not load cross-domain resources: " + noLoads;
}
dojo._xdWalkReqs();
var defLength = dojo._xdDefList.length;
for(var i= 0; i < defLength; i++){
var content = dojo._xdDefList[i];
if(dojo.config["debugAtAllCosts"] && content["resourceName"]){
if(!dojo["_xdDebugQueue"]){
dojo._xdDebugQueue = [];
}
dojo._xdDebugQueue.push({resourceName: content.resourceName, resourcePath: content.resourcePath});
}else{
//Evaluate the resource to bring it into being.
//Pass in scope args to allow multiple versions of modules in a page.
content.apply(dojo.global, dojo._scopeArgs);
}
}
//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.
for(i = 0; i < dojo._xdContents.length; i++){
var current = dojo._xdContents[i];
if(current.content && !current.isDefined){
//Pass in scope args to allow multiple versions of modules in a page.
current.content.apply(dojo.global, dojo._scopeArgs);
}
}
//Clean up for the next round of xd loading.
dojo._xdReset();
if(dojo["_xdDebugQueue"] && dojo._xdDebugQueue.length > 0){
dojo._xdDebugFileLoaded();
}else{
dojo._xdNotifyLoaded();
}
}
dojo._xdNotifyLoaded = function(){
//Clear inflight count so we will finally do finish work.
//Just having a legitimate status (true or false) for an inflight item
//means that it is still being processed. Do the typeof test
//to avoid bad JavaScript that might tinker with Object.prototype.
for(var prop in dojo._xdInFlight){
if(typeof dojo._xdInFlight[prop] == "boolean"){
return;
}
}
dojo._inFlightCount = 0;
//Only trigger call loaded if dj_load_init has run.
if(dojo._initFired && !dojo._loadNotifying){
dojo._callLoaded();
}