1 /** vim: et:ts=4:sw=4:sts=4
2 * @license RequireJS 1.0.8 Copyright (c) 2010-2012, The Dojo Foundation All Rights Reserved.
3 * Available via the MIT or new BSD license.
4 * see: http://github.com/jrburke/requirejs for details
6 /*jslint strict: false, plusplus: false, sub: true */
7 /*global window, navigator, document, importScripts, jQuery, setTimeout, opera */
9 var requirejs, require, define;
10 (function (undefined) {
11 //Change this version number for each release.
12 var version = "1.0.8",
13 commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg,
14 cjsRequireRegExp = /require\(\s*["']([^'"\s]+)["']\s*\)/g,
15 currDirRegExp = /^\.\//,
16 jsSuffixRegExp = /\.js$/,
17 ostring = Object.prototype.toString,
21 isBrowser = !!(typeof window !== "undefined" && navigator && document),
22 isWebWorker = !isBrowser && typeof importScripts !== "undefined",
23 //PS3 indicates loaded and complete, but need to wait for complete
24 //specifically. Sequence is "loading", "loaded", execution,
25 // then "complete". The UA check is unfortunate, but not sure how
26 //to feature test w/o causing perf issues.
27 readyRegExp = isBrowser && navigator.platform === 'PLAYSTATION 3' ?
28 /^complete$/ : /^(complete|loaded)$/,
30 //Oh the tragedy, detecting opera. See the usage of isOpera for reason.
31 isOpera = typeof opera !== "undefined" && opera.toString() === "[object Opera]",
35 interactiveScript = null,
37 useInteractive = false,
38 reservedDependencies = {
43 req, cfg = {}, currentlyAddingScript, s, head, baseElement, scripts, script,
44 src, subPath, mainScript, dataMain, globalI, ctx, jQueryCheck, checkLoadedTimeoutId;
46 function isFunction(it) {
47 return ostring.call(it) === "[object Function]";
50 function isArray(it) {
51 return ostring.call(it) === "[object Array]";
55 * Simple function to mix in properties from source into target,
56 * but only if target does not already have a property of the same name.
57 * This is not robust in IE for transferring methods that match
58 * Object.prototype names, but the uses of mixin here seem unlikely to
59 * trigger a problem related to that.
61 function mixin(target, source, force) {
62 for (var prop in source) {
63 if (!(prop in empty) && (!(prop in target) || force)) {
64 target[prop] = source[prop];
71 * Constructs an error with a pointer to an URL with more information.
72 * @param {String} id the error ID that maps to an ID on a web page.
73 * @param {String} message human readable error.
74 * @param {Error} [err] the original error, if there is one.
78 function makeError(id, msg, err) {
79 var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id);
81 e.originalError = err;
87 * Used to set up package paths from a packagePaths or packages config object.
88 * @param {Object} pkgs the object to store the new package config
89 * @param {Array} currentPackages an array of packages to configure
90 * @param {String} [dir] a prefix dir to use.
92 function configurePackageDir(pkgs, currentPackages, dir) {
93 var i, location, pkgObj;
95 for (i = 0; (pkgObj = currentPackages[i]); i++) {
96 pkgObj = typeof pkgObj === "string" ? { name: pkgObj } : pkgObj;
97 location = pkgObj.location;
99 //Add dir to the path, but avoid paths that start with a slash
100 //or have a colon (indicates a protocol)
101 if (dir && (!location || (location.indexOf("/") !== 0 && location.indexOf(":") === -1))) {
102 location = dir + "/" + (location || pkgObj.name);
105 //Create a brand new object on pkgs, since currentPackages can
106 //be passed in again, and config.pkgs is the internal transformed
107 //state for all package configs.
108 pkgs[pkgObj.name] = {
110 location: location || pkgObj.name,
111 //Remove leading dot in main, so main paths are normalized,
112 //and remove any trailing .js, since different package
113 //envs have different conventions: some use a module name,
114 //some use a file name.
115 main: (pkgObj.main || "main")
116 .replace(currDirRegExp, '')
117 .replace(jsSuffixRegExp, '')
123 * jQuery 1.4.3-1.5.x use a readyWait/ready() pairing to hold DOM
124 * ready callbacks, but jQuery 1.6 supports a holdReady() API instead.
125 * At some point remove the readyWait/ready() support and just stick
126 * with using holdReady.
128 function jQueryHoldReady($, shouldHold) {
130 $.holdReady(shouldHold);
131 } else if (shouldHold) {
138 if (typeof define !== "undefined") {
139 //If a define is already in play via another AMD loader,
144 if (typeof requirejs !== "undefined") {
145 if (isFunction(requirejs)) {
146 //Do not overwrite and existing requirejs instance.
150 requirejs = undefined;
154 //Allow for a require config object
155 if (typeof require !== "undefined" && !isFunction(require)) {
156 //assume it is a config object.
162 * Creates a new context for use in require and define calls.
163 * Handle most of the heavy lifting. Do not want to use an object
164 * with prototype here to avoid using "this" in require, in case it
165 * needs to be used in more super secure envs that do not want this.
166 * Also there should not be that many contexts in the page. Usually just
167 * one for the default context, but could be extra for multiversion cases
168 * or if a package needs a special context for a dependency that conflicts
169 * with the standard context.
171 function newContext(contextName) {
193 managerCallbacks = {},
195 //Used to indicate which modules in a build scenario
196 //need to be full executed.
202 * Trims the . and .. from an array of path segments.
203 * It will keep a leading path segment if a .. will become
204 * the first path segment, to help with module name lookups,
205 * which act like paths, but can be remapped. But the end result,
206 * all paths that use this function should look normalized.
207 * NOTE: this method MODIFIES the input array.
208 * @param {Array} ary the array of path segments.
210 function trimDots(ary) {
212 for (i = 0; (part = ary[i]); i++) {
216 } else if (part === "..") {
217 if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
218 //End of the line. Keep at least one non-dot
219 //path segment at the front so it can be mapped
220 //correctly to disk. Otherwise, there is likely
221 //no path mapping for a path starting with '..'.
222 //This can still fail, but catches the most reasonable
226 ary.splice(i - 1, 2);
234 * Given a relative module name, like ./something, normalize it to
235 * a real name that can be mapped to a path.
236 * @param {String} name the relative name
237 * @param {String} baseName a real name that the name arg is relative
239 * @returns {String} normalized name
241 function normalize(name, baseName) {
242 var pkgName, pkgConfig;
244 //Adjust any relative paths.
245 if (name && name.charAt(0) === ".") {
246 //If have a base name, try to normalize against it,
247 //otherwise, assume it is a top-level require that will
248 //be relative to baseUrl in the end.
250 if (config.pkgs[baseName]) {
251 //If the baseName is a package name, then just treat it as one
252 //name to concat the name with.
253 baseName = [baseName];
255 //Convert baseName to array, and lop off the last part,
256 //so that . matches that "directory" and not name of the baseName's
257 //module. For instance, baseName of "one/two/three", maps to
258 //"one/two/three.js", but we want the directory, "one/two" for
259 //this normalization.
260 baseName = baseName.split("/");
261 baseName = baseName.slice(0, baseName.length - 1);
264 name = baseName.concat(name.split("/"));
267 //Some use of packages may use a . path to reference the
268 //"main" module name, so normalize for that.
269 pkgConfig = config.pkgs[(pkgName = name[0])];
270 name = name.join("/");
271 if (pkgConfig && name === pkgName + '/' + pkgConfig.main) {
274 } else if (name.indexOf("./") === 0) {
275 // No baseName, so this is ID is resolved relative
276 // to baseUrl, pull off the leading dot.
277 name = name.substring(2);
284 * Creates a module mapping that includes plugin prefix, module
285 * name, and path. If parentModuleMap is provided it will
286 * also normalize the name via require.normalize()
288 * @param {String} name the module name
289 * @param {String} [parentModuleMap] parent module map
290 * for the module name, used to resolve relative names.
294 function makeModuleMap(name, parentModuleMap) {
295 var index = name ? name.indexOf("!") : -1,
297 parentName = parentModuleMap ? parentModuleMap.name : null,
299 normalizedName, url, pluginModule;
302 prefix = name.substring(0, index);
303 name = name.substring(index + 1, name.length);
307 prefix = normalize(prefix, parentName);
310 //Account for relative paths if there is a base name.
313 pluginModule = defined[prefix];
314 if (pluginModule && pluginModule.normalize) {
315 //Plugin is loaded, use its normalize method.
316 normalizedName = pluginModule.normalize(name, function (name) {
317 return normalize(name, parentName);
320 normalizedName = normalize(name, parentName);
324 normalizedName = normalize(name, parentName);
326 url = urlMap[normalizedName];
328 //Calculate url for the module, if it has a name.
329 //Use name here since nameToUrl also calls normalize,
330 //and for relative names that are outside the baseUrl
331 //this causes havoc. Was thinking of just removing
332 //parentModuleMap to avoid extra normalization, but
333 //normalize() still does a dot removal because of
334 //issue #142, so just pass in name here and redo
335 //the normalization. Paths outside baseUrl are just
337 url = context.nameToUrl(name, null, parentModuleMap);
339 //Store the URL mapping for later.
340 urlMap[normalizedName] = url;
347 name: normalizedName,
348 parentMap: parentModuleMap,
350 originalName: originalName,
351 fullName: prefix ? prefix + "!" + (normalizedName || '') : normalizedName
356 * Determine if priority loading is done. If so clear the priorityWait
358 function isPriorityDone() {
359 var priorityDone = true,
360 priorityWait = config.priorityWait,
363 for (i = 0; (priorityName = priorityWait[i]); i++) {
364 if (!loaded[priorityName]) {
365 priorityDone = false;
370 delete config.priorityWait;
376 function makeContextModuleFunc(func, relModuleMap, enableBuildCallback) {
378 //A version of a require function that passes a moduleName
379 //value for items that may need to
380 //look up paths relative to the moduleName
381 var args = aps.call(arguments, 0), lastArg;
382 if (enableBuildCallback &&
383 isFunction((lastArg = args[args.length - 1]))) {
384 lastArg.__requireJsBuild = true;
386 args.push(relModuleMap);
387 return func.apply(null, args);
392 * Helper function that creates a require function object to give to
393 * modules that ask for it as a dependency. It needs to be specific
394 * per module because of the implication of path mappings that may
395 * need to be relative to the module name.
397 function makeRequire(relModuleMap, enableBuildCallback, altRequire) {
398 var modRequire = makeContextModuleFunc(altRequire || context.require, relModuleMap, enableBuildCallback);
401 nameToUrl: makeContextModuleFunc(context.nameToUrl, relModuleMap),
402 toUrl: makeContextModuleFunc(context.toUrl, relModuleMap),
403 defined: makeContextModuleFunc(context.requireDefined, relModuleMap),
404 specified: makeContextModuleFunc(context.requireSpecified, relModuleMap),
405 isBrowser: req.isBrowser
411 * Queues a dependency for checking after the loader is out of a
412 * "paused" state, for example while a script file is being loaded
413 * in the browser, where it may have many modules defined in it.
415 function queueDependency(manager) {
416 context.paused.push(manager);
419 function execManager(manager) {
420 var i, ret, err, errFile, errModuleTree,
421 cb = manager.callback,
423 fullName = map.fullName,
425 listeners = manager.listeners,
426 execCb = config.requireExecCb || req.execCb,
429 //Call the callback to define the module, if necessary.
430 if (cb && isFunction(cb)) {
431 if (config.catchError.define) {
433 ret = execCb(fullName, manager.callback, args, defined[fullName]);
438 ret = execCb(fullName, manager.callback, args, defined[fullName]);
442 //If setting exports via "module" is in play,
443 //favor that over return value and exports. After that,
444 //favor a non-undefined return value over exports use.
445 cjsModule = manager.cjsModule;
447 cjsModule.exports !== undefined &&
448 //Make sure it is not already the exports value
449 cjsModule.exports !== defined[fullName]) {
450 ret = defined[fullName] = manager.cjsModule.exports;
451 } else if (ret === undefined && manager.usingExports) {
452 //exports already set the defined value.
453 ret = defined[fullName];
455 //Use the return value from the function.
456 defined[fullName] = ret;
457 //If this module needed full execution in a build
458 //environment, mark that now.
459 if (needFullExec[fullName]) {
460 fullExec[fullName] = true;
464 } else if (fullName) {
465 //May just be an object definition for the module. Only
466 //worry about defining if have a module name.
467 ret = defined[fullName] = cb;
469 //If this module needed full execution in a build
470 //environment, mark that now.
471 if (needFullExec[fullName]) {
472 fullExec[fullName] = true;
476 //Clean up waiting. Do this before error calls, and before
477 //calling back listeners, so that bookkeeping is correct
478 //in the event of an error and error is reported in correct order,
479 //since the listeners will likely have errors if the
480 //onError function does not throw.
481 if (waiting[manager.id]) {
482 delete waiting[manager.id];
483 manager.isDone = true;
484 context.waitCount -= 1;
485 if (context.waitCount === 0) {
486 //Clear the wait array used for cycles.
491 //Do not need to track manager callback now that it is defined.
492 delete managerCallbacks[fullName];
494 //Allow instrumentation like the optimizer to know the order
495 //of modules executed and their dependencies.
496 if (req.onResourceLoad && !manager.placeholder) {
497 req.onResourceLoad(context, map, manager.depArray);
501 errFile = (fullName ? makeModuleMap(fullName).url : '') ||
502 err.fileName || err.sourceURL;
503 errModuleTree = err.moduleTree;
504 err = makeError('defineerror', 'Error evaluating ' +
505 'module "' + fullName + '" at location "' +
507 err + '\nfileName:' + errFile +
508 '\nlineNumber: ' + (err.lineNumber || err.line), err);
509 err.moduleName = fullName;
510 err.moduleTree = errModuleTree;
511 return req.onError(err);
514 //Let listeners know of this manager's value.
515 for (i = 0; (cb = listeners[i]); i++) {
523 * Helper that creates a callack function that is called when a dependency
524 * is ready, and sets the i-th dependency for the manager as the
525 * value passed to the callback generated by this function.
527 function makeArgCallback(manager, i) {
528 return function (value) {
529 //Only do the work if it has not been done
530 //already for a dependency. Cycle breaking
531 //logic in forceExec could mean this function
532 //is called more than once for a given dependency.
533 if (!manager.depDone[i]) {
534 manager.depDone[i] = true;
535 manager.deps[i] = value;
536 manager.depCount -= 1;
537 if (!manager.depCount) {
539 execManager(manager);
545 function callPlugin(pluginName, depManager) {
546 var map = depManager.map,
547 fullName = map.fullName,
549 plugin = plugins[pluginName] ||
550 (plugins[pluginName] = defined[pluginName]),
553 //No need to continue if the manager is already
554 //in the process of loading.
555 if (depManager.loading) {
558 depManager.loading = true;
560 load = function (ret) {
561 depManager.callback = function () {
564 execManager(depManager);
566 loaded[depManager.id] = true;
568 //The loading of this plugin
569 //might have placed other things
570 //in the paused queue. In particular,
571 //a loader plugin that depends on
572 //a different plugin loaded resource.
576 //Allow plugins to load other code without having to know the
577 //context or how to "complete" the load.
578 load.fromText = function (moduleName, text) {
579 /*jslint evil: true */
580 var hasInteractive = useInteractive;
582 //Indicate a the module is in process of loading.
583 loaded[moduleName] = false;
584 context.scriptCount += 1;
586 //Indicate this is not a "real" module, so do not track it
587 //for builds, it does not map to a real file.
588 context.fake[moduleName] = true;
590 //Turn off interactive script matching for IE for any define
591 //calls in the text, then turn it back on at the end.
592 if (hasInteractive) {
593 useInteractive = false;
598 if (hasInteractive) {
599 useInteractive = true;
602 //Support anonymous modules.
603 context.completeLoad(moduleName);
606 //No need to continue if the plugin value has already been
607 //defined by a build.
608 if (fullName in defined) {
609 load(defined[fullName]);
611 //Use parentName here since the plugin's name is not reliable,
612 //could be some weird string with no path that actually wants to
613 //reference the parentName's path.
614 plugin.load(name, makeRequire(map.parentMap, true, function (deps, cb) {
617 //Convert deps to full names and hold on to them
618 //for reference later, when figuring out if they
619 //are blocked by a circular dependency.
620 for (i = 0; (dep = deps[i]); i++) {
621 depMap = makeModuleMap(dep, map.parentMap);
622 deps[i] = depMap.fullName;
623 if (!depMap.prefix) {
624 moduleDeps.push(deps[i]);
627 depManager.moduleDeps = (depManager.moduleDeps || []).concat(moduleDeps);
628 return context.require(deps, cb);
634 * Adds the manager to the waiting queue. Only fully
635 * resolved items should be in the waiting queue.
637 function addWait(manager) {
638 if (!waiting[manager.id]) {
639 waiting[manager.id] = manager;
640 waitAry.push(manager);
641 context.waitCount += 1;
646 * Function added to every manager object. Created out here
647 * to avoid new function creation for each manager instance.
649 function managerAdd(cb) {
650 this.listeners.push(cb);
653 function getManager(map, shouldQueue) {
654 var fullName = map.fullName,
656 plugin = prefix ? plugins[prefix] ||
657 (plugins[prefix] = defined[prefix]) : null,
658 manager, created, pluginManager, prefixMap;
661 manager = managerCallbacks[fullName];
667 //ID is just the full name, but if it is a plugin resource
668 //for a plugin that has not been loaded,
669 //then add an ID counter to it.
670 id: (prefix && !plugin ?
671 (managerCounter++) + '__p@:' : '') +
672 (fullName || '__r@' + (managerCounter++)),
682 specified[manager.id] = true;
684 //Only track the manager/reuse it if this is a non-plugin
685 //resource. Also only track plugin resources once
686 //the plugin has been loaded, and so the fullName is the
687 //true normalized value.
688 if (fullName && (!prefix || plugins[prefix])) {
689 managerCallbacks[fullName] = manager;
693 //If there is a plugin needed, but it is not loaded,
694 //first load the plugin, then continue on.
695 if (prefix && !plugin) {
696 prefixMap = makeModuleMap(prefix);
698 //Clear out defined and urlFetched if the plugin was previously
699 //loaded/defined, but not as full module (as in a build
700 //situation). However, only do this work if the plugin is in
701 //defined but does not have a module export value.
702 if (prefix in defined && !defined[prefix]) {
703 delete defined[prefix];
704 delete urlFetched[prefixMap.url];
707 pluginManager = getManager(prefixMap, true);
708 pluginManager.add(function (plugin) {
709 //Create a new manager for the normalized
710 //resource ID and have it call this manager when
712 var newMap = makeModuleMap(map.originalName, map.parentMap),
713 normalizedManager = getManager(newMap, true);
715 //Indicate this manager is a placeholder for the real,
716 //normalized thing. Important for when trying to map
717 //modules and dependencies, for instance, in a build.
718 manager.placeholder = true;
720 normalizedManager.add(function (resource) {
721 manager.callback = function () {
724 execManager(manager);
727 } else if (created && shouldQueue) {
728 //Indicate the resource is not loaded yet if it is to be
730 loaded[manager.id] = false;
731 queueDependency(manager);
738 function main(inName, depArray, callback, relModuleMap) {
739 var moduleMap = makeModuleMap(inName, relModuleMap),
740 name = moduleMap.name,
741 fullName = moduleMap.fullName,
742 manager = getManager(moduleMap),
745 i, depArg, depName, depPrefix, cjsMod;
748 //If module already defined for context, or already loaded,
749 //then leave. Also leave if jQuery is registering but it does
750 //not match the desired version number in the config.
751 if (fullName in defined || loaded[id] === true ||
752 (fullName === "jquery" && config.jQuery &&
753 config.jQuery !== callback().fn.jquery)) {
757 //Set specified/loaded here for modules that are also loaded
758 //as part of a layer, where onScriptLoad is not fired
759 //for those cases. Do this after the inline define and
760 //dependency tracing is done.
761 specified[id] = true;
764 //If module is jQuery set up delaying its dom ready listeners.
765 if (fullName === "jquery" && callback) {
766 jQueryCheck(callback());
770 //Attach real depArray and callback to the manager. Do this
771 //only if the module has not been defined already, so do this after
772 //the fullName checks above. IE can call main() more than once
774 manager.depArray = depArray;
775 manager.callback = callback;
777 //Add the dependencies to the deps field, and register for callbacks
778 //on the dependencies.
779 for (i = 0; i < depArray.length; i++) {
780 depArg = depArray[i];
781 //There could be cases like in IE, where a trailing comma will
782 //introduce a null dependency, so only treat a real dependency
783 //value as a dependency.
785 //Split the dependency name into plugin and name parts
786 depArg = makeModuleMap(depArg, (name ? moduleMap : relModuleMap));
787 depName = depArg.fullName;
788 depPrefix = depArg.prefix;
790 //Fix the name in depArray to be just the name, since
791 //that is how it will be called back later.
792 depArray[i] = depName;
794 //Fast path CommonJS standard dependencies.
795 if (depName === "require") {
796 deps[i] = makeRequire(moduleMap);
797 } else if (depName === "exports") {
798 //CommonJS module spec 1.1
799 deps[i] = defined[fullName] = {};
800 manager.usingExports = true;
801 } else if (depName === "module") {
802 //CommonJS module spec 1.1
803 manager.cjsModule = cjsMod = deps[i] = {
805 uri: name ? context.nameToUrl(name, null, relModuleMap) : undefined,
806 exports: defined[fullName]
808 } else if (depName in defined && !(depName in waiting) &&
809 (!(fullName in needFullExec) ||
810 (fullName in needFullExec && fullExec[depName]))) {
811 //Module already defined, and not in a build situation
812 //where the module is a something that needs full
813 //execution and this dependency has not been fully
814 //executed. See r.js's requirePatch.js for more info
816 deps[i] = defined[depName];
818 //Mark this dependency as needing full exec if
819 //the current module needs full exec.
820 if (fullName in needFullExec) {
821 needFullExec[depName] = true;
822 //Reset state so fully executed code will get
823 //picked up correctly.
824 delete defined[depName];
825 urlFetched[depArg.url] = false;
828 //Either a resource that is not loaded yet, or a plugin
829 //resource for either a plugin that has not
831 manager.depCount += 1;
832 manager.depCallbacks[i] = makeArgCallback(manager, i);
833 getManager(depArg, true).add(manager.depCallbacks[i]);
838 //Do not bother tracking the manager if it is all done.
839 if (!manager.depCount) {
841 execManager(manager);
848 * Convenience method to call main for a define call that was put on
849 * hold in the defQueue.
851 function callDefMain(args) {
852 main.apply(null, args);
856 * jQuery 1.4.3+ supports ways to hold off calling
857 * calling jQuery ready callbacks until all scripts are loaded. Be sure
858 * to track it if the capability exists.. Also, since jQuery 1.4.3 does
859 * not register as a module, need to do some global inference checking.
860 * Even if it does register as a module, not guaranteed to be the precise
861 * name of the global. If a jQuery is tracked for this context, then go
862 * ahead and register it as a module too, if not already in process.
864 jQueryCheck = function (jqCandidate) {
865 if (!context.jQuery) {
866 var $ = jqCandidate || (typeof jQuery !== "undefined" ? jQuery : null);
869 //If a specific version of jQuery is wanted, make sure to only
870 //use this jQuery if it matches.
871 if (config.jQuery && $.fn.jquery !== config.jQuery) {
875 if ("holdReady" in $ || "readyWait" in $) {
878 //Manually create a "jquery" module entry if not one already
879 //or in process. Note this could trigger an attempt at
880 //a second jQuery registration, but does no harm since
881 //the first one wins, and it is the same value anyway.
882 callDefMain(["jquery", [], function () {
886 //Ask jQuery to hold DOM ready callbacks.
887 if (context.scriptCount) {
888 jQueryHoldReady($, true);
889 context.jQueryIncremented = true;
896 function findCycle(manager, traced) {
897 var fullName = manager.map.fullName,
898 depArray = manager.depArray,
900 i, depName, depManager, result;
902 if (manager.isDone || !fullName || !loaded[fullName]) {
907 if (traced[fullName]) {
911 traced[fullName] = true;
913 //Trace through the dependencies.
915 for (i = 0; i < depArray.length; i++) {
916 //Some array members may be null, like if a trailing comma
917 //IE, so do the explicit [i] access and check if it has a value.
918 depName = depArray[i];
919 if (!loaded[depName] && !reservedDependencies[depName]) {
923 depManager = waiting[depName];
924 if (depManager && !depManager.isDone && loaded[depName]) {
925 result = findCycle(depManager, traced);
932 //Discard the cycle that was found, since it cannot
933 //be forced yet. Also clear this module from traced.
935 delete traced[fullName];
942 function forceExec(manager, traced) {
943 var fullName = manager.map.fullName,
944 depArray = manager.depArray,
945 i, depName, depManager, prefix, prefixManager, value;
948 if (manager.isDone || !fullName || !loaded[fullName]) {
953 if (traced[fullName]) {
954 return defined[fullName];
957 traced[fullName] = true;
960 //Trace through the dependencies.
962 for (i = 0; i < depArray.length; i++) {
963 //Some array members may be null, like if a trailing comma
964 //IE, so do the explicit [i] access and check if it has a value.
965 depName = depArray[i];
967 //First, make sure if it is a plugin resource that the
968 //plugin is not blocked.
969 prefix = makeModuleMap(depName).prefix;
970 if (prefix && (prefixManager = waiting[prefix])) {
971 forceExec(prefixManager, traced);
973 depManager = waiting[depName];
974 if (depManager && !depManager.isDone && loaded[depName]) {
975 value = forceExec(depManager, traced);
976 manager.depCallbacks[i](value);
982 return defined[fullName];
986 * Checks if all modules for a context are loaded, and if so, evaluates the
987 * new ones in right dependency order.
991 function checkLoaded() {
992 var waitInterval = config.waitSeconds * 1000,
993 //It is possible to disable the wait interval by using waitSeconds of 0.
994 expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(),
995 noLoads = "", hasLoadedProp = false, stillLoading = false,
997 i, prop, err, manager, cycleManager, moduleDeps;
999 //If there are items still in the paused queue processing wait.
1000 //This is particularly important in the sync case where each paused
1001 //item is processed right away but there may be more waiting.
1002 if (context.pausedCount > 0) {
1006 //Determine if priority loading is done. If so clear the priority. If
1007 //not, then do not check
1008 if (config.priorityWait) {
1009 if (isPriorityDone()) {
1010 //Call resume, since it could have
1011 //some waiting dependencies to trace.
1018 //See if anything is still in flight.
1019 for (prop in loaded) {
1020 if (!(prop in empty)) {
1021 hasLoadedProp = true;
1022 if (!loaded[prop]) {
1024 noLoads += prop + " ";
1026 stillLoading = true;
1027 if (prop.indexOf('!') === -1) {
1028 //No reason to keep looking for unfinished
1029 //loading. If the only stillLoading is a
1030 //plugin resource though, keep going,
1031 //because it may be that a plugin resource
1032 //is waiting on a non-plugin cycle.
1036 moduleDeps = managerCallbacks[prop] && managerCallbacks[prop].moduleDeps;
1038 cycleDeps.push.apply(cycleDeps, moduleDeps);
1046 //Check for exit conditions.
1047 if (!hasLoadedProp && !context.waitCount) {
1048 //If the loaded object had no items, then the rest of
1049 //the work below does not need to be done.
1052 if (expired && noLoads) {
1053 //If wait time expired, throw error of unloaded modules.
1054 err = makeError("timeout", "Load timeout for modules: " + noLoads);
1055 err.requireType = "timeout";
1056 err.requireModules = noLoads;
1057 err.contextName = context.contextName;
1058 return req.onError(err);
1061 //If still loading but a plugin is waiting on a regular module cycle
1063 if (stillLoading && cycleDeps.length) {
1064 for (i = 0; (manager = waiting[cycleDeps[i]]); i++) {
1065 if ((cycleManager = findCycle(manager, {}))) {
1066 forceExec(cycleManager, {});
1073 //If still waiting on loads, and the waiting load is something
1074 //other than a plugin resource, or there are still outstanding
1075 //scripts, then just try back later.
1076 if (!expired && (stillLoading || context.scriptCount)) {
1077 //Something is still waiting to load. Wait for it, but only
1078 //if a timeout is not already in effect.
1079 if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) {
1080 checkLoadedTimeoutId = setTimeout(function () {
1081 checkLoadedTimeoutId = 0;
1088 //If still have items in the waiting cue, but all modules have
1089 //been loaded, then it means there are some circular dependencies
1090 //that need to be broken.
1091 //However, as a waiting thing is fired, then it can add items to
1092 //the waiting cue, and those items should not be fired yet, so
1093 //make sure to redo the checkLoaded call after breaking a single
1094 //cycle, if nothing else loaded then this logic will pick it up
1096 if (context.waitCount) {
1097 //Cycle through the waitAry, and call items in sequence.
1098 for (i = 0; (manager = waitAry[i]); i++) {
1099 forceExec(manager, {});
1102 //If anything got placed in the paused queue, run it down.
1103 if (context.paused.length) {
1107 //Only allow this recursion to a certain depth. Only
1108 //triggered by errors in calling a module in which its
1109 //modules waiting on it cannot finish loading, or some circular
1110 //dependencies that then may add more dependencies.
1111 //The value of 5 is a bit arbitrary. Hopefully just one extra
1112 //pass, or two for the case of circular dependencies generating
1113 //more work that gets resolved in the sync node case.
1114 if (checkLoadedDepth < 5) {
1115 checkLoadedDepth += 1;
1120 checkLoadedDepth = 0;
1122 //Check for DOM ready, and nothing is waiting across contexts.
1123 req.checkReadyState();
1129 * Resumes tracing of dependencies and then checks if everything is loaded.
1131 resume = function () {
1132 var manager, map, url, i, p, args, fullName;
1134 //Any defined modules in the global queue, intake them now.
1135 context.takeGlobalQueue();
1139 if (context.scriptCount <= 0) {
1140 //Synchronous envs will push the number below zero with the
1141 //decrement above, be sure to set it back to zero for good measure.
1142 //require() calls that also do not end up loading scripts could
1143 //push the number negative too.
1144 context.scriptCount = 0;
1147 //Make sure any remaining defQueue items get properly processed.
1148 while (defQueue.length) {
1149 args = defQueue.shift();
1150 if (args[0] === null) {
1151 return req.onError(makeError('mismatch', 'Mismatched anonymous define() module: ' + args[args.length - 1]));
1157 //Skip the resume of paused dependencies
1158 //if current context is in priority wait.
1159 if (!config.priorityWait || isPriorityDone()) {
1160 while (context.paused.length) {
1162 context.pausedCount += p.length;
1164 context.paused = [];
1166 for (i = 0; (manager = p[i]); i++) {
1169 fullName = map.fullName;
1171 //If the manager is for a plugin managed resource,
1172 //ask the plugin to load it now.
1174 callPlugin(map.prefix, manager);
1176 //Regular dependency.
1177 if (!urlFetched[url] && !loaded[fullName]) {
1178 (config.requireLoad || req.load)(context, fullName, url);
1180 //Mark the URL as fetched, but only if it is
1181 //not an empty: URL, used by the optimizer.
1182 //In that case we need to be sure to call
1183 //load() for each module that is mapped to
1184 //empty: so that dependencies are satisfied
1186 if (url.indexOf('empty:') !== 0) {
1187 urlFetched[url] = true;
1193 //Move the start time for timeout forward.
1194 context.startTime = (new Date()).getTime();
1195 context.pausedCount -= p.length;
1199 //Only check if loaded when resume depth is 1. It is likely that
1200 //it is only greater than 1 in sync environments where a factory
1201 //function also then calls the callback-style require. In those
1202 //cases, the checkLoaded should not occur until the resume
1203 //depth is back at the top level.
1204 if (resumeDepth === 1) {
1213 //Define the context object. Many of these fields are on here
1214 //just to make debugging easier.
1216 contextName: contextName,
1221 specified: specified,
1224 urlFetched: urlFetched,
1230 needFullExec: needFullExec,
1233 managerCallbacks: managerCallbacks,
1234 makeModuleMap: makeModuleMap,
1235 normalize: normalize,
1237 * Set a configuration for the context.
1238 * @param {Object} cfg config object to integrate.
1240 configure: function (cfg) {
1241 var paths, prop, packages, pkgs, packagePaths, requireWait;
1243 //Make sure the baseUrl ends in a slash.
1245 if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== "/") {
1250 //Save off the paths and packages since they require special processing,
1251 //they are additive.
1252 paths = config.paths;
1253 packages = config.packages;
1256 //Mix in the config values, favoring the new values over
1257 //existing ones in context.config.
1258 mixin(config, cfg, true);
1260 //Adjust paths if necessary.
1262 for (prop in cfg.paths) {
1263 if (!(prop in empty)) {
1264 paths[prop] = cfg.paths[prop];
1267 config.paths = paths;
1270 packagePaths = cfg.packagePaths;
1271 if (packagePaths || cfg.packages) {
1272 //Convert packagePaths into a packages config.
1274 for (prop in packagePaths) {
1275 if (!(prop in empty)) {
1276 configurePackageDir(pkgs, packagePaths[prop], prop);
1281 //Adjust packages if necessary.
1283 configurePackageDir(pkgs, cfg.packages);
1286 //Done with modifications, assing packages back to context config
1290 //If priority loading is in effect, trigger the loads now
1292 //Hold on to requireWait value, and reset it after done
1293 requireWait = context.requireWait;
1295 //Allow tracing some require calls to allow the fetching
1296 //of the priority config.
1297 context.requireWait = false;
1298 //But first, call resume to register any defined modules that may
1299 //be in a data-main built file before the priority config
1303 context.require(cfg.priority);
1305 //Trigger a resume right away, for the case when
1306 //the script with the priority load is done as part
1307 //of a data-main call. In that case the normal resume
1308 //call will not happen because the scriptCount will be
1309 //at 1, since the script for data-main is being processed.
1312 //Restore previous state.
1313 context.requireWait = requireWait;
1314 config.priorityWait = cfg.priority;
1317 //If a deps array or a config callback is specified, then call
1318 //require with those args. This is useful when require is defined as a
1319 //config object before require.js is loaded.
1320 if (cfg.deps || cfg.callback) {
1321 context.require(cfg.deps || [], cfg.callback);
1325 requireDefined: function (moduleName, relModuleMap) {
1326 return makeModuleMap(moduleName, relModuleMap).fullName in defined;
1329 requireSpecified: function (moduleName, relModuleMap) {
1330 return makeModuleMap(moduleName, relModuleMap).fullName in specified;
1333 require: function (deps, callback, relModuleMap) {
1334 var moduleName, fullName, moduleMap;
1335 if (typeof deps === "string") {
1336 if (isFunction(callback)) {
1338 return req.onError(makeError("requireargs", "Invalid require call"));
1341 //Synchronous access to one module. If require.get is
1342 //available (as in the Node adapter), prefer that.
1343 //In this case deps is the moduleName and callback is
1346 return req.get(context, deps, callback);
1349 //Just return the module wanted. In this scenario, the
1350 //second arg (if passed) is just the relModuleMap.
1352 relModuleMap = callback;
1354 //Normalize module name, if it contains . or ..
1355 moduleMap = makeModuleMap(moduleName, relModuleMap);
1356 fullName = moduleMap.fullName;
1358 if (!(fullName in defined)) {
1359 return req.onError(makeError("notloaded", "Module name '" +
1360 moduleMap.fullName +
1361 "' has not been loaded yet for context: " +
1364 return defined[fullName];
1367 //Call main but only if there are dependencies or
1368 //a callback to call.
1369 if (deps && deps.length || callback) {
1370 main(null, deps, callback, relModuleMap);
1373 //If the require call does not trigger anything new to load,
1374 //then resume the dependency processing.
1375 if (!context.requireWait) {
1376 while (!context.scriptCount && context.paused.length) {
1380 return context.require;
1384 * Internal method to transfer globalQueue items to this context's
1387 takeGlobalQueue: function () {
1388 //Push all the globalDefQueue items into the context's defQueue
1389 if (globalDefQueue.length) {
1390 //Array splice in the values since the context code has a
1391 //local var ref to defQueue, so cannot just reassign the one
1393 apsp.apply(context.defQueue,
1394 [context.defQueue.length - 1, 0].concat(globalDefQueue));
1395 globalDefQueue = [];
1400 * Internal method used by environment adapters to complete a load event.
1401 * A load event could be a script load or just a load pass from a synchronous
1403 * @param {String} moduleName the name of the module to potentially complete.
1405 completeLoad: function (moduleName) {
1408 context.takeGlobalQueue();
1410 while (defQueue.length) {
1411 args = defQueue.shift();
1413 if (args[0] === null) {
1414 args[0] = moduleName;
1416 } else if (args[0] === moduleName) {
1417 //Found matching define call for this script!
1420 //Some other named define call, most likely the result
1421 //of a build layer that included many define calls.
1429 //A script that does not call define(), so just simulate
1430 //the call for it. Special exception for jQuery dynamic load.
1431 callDefMain([moduleName, [],
1432 moduleName === "jquery" && typeof jQuery !== "undefined" ?
1438 //Doing this scriptCount decrement branching because sync envs
1439 //need to decrement after resume, otherwise it looks like
1440 //loading is complete after the first dependency is fetched.
1441 //For browsers, it works fine to decrement after, but it means
1442 //the checkLoaded setTimeout 50 ms cost is taken. To avoid
1443 //that cost, decrement beforehand.
1445 context.scriptCount -= 1;
1449 context.scriptCount -= 1;
1454 * Converts a module name + .extension into an URL path.
1455 * *Requires* the use of a module name. It does not support using
1456 * plain URLs like nameToUrl.
1458 toUrl: function (moduleNamePlusExt, relModuleMap) {
1459 var index = moduleNamePlusExt.lastIndexOf("."),
1463 ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length);
1464 moduleNamePlusExt = moduleNamePlusExt.substring(0, index);
1467 return context.nameToUrl(moduleNamePlusExt, ext, relModuleMap);
1471 * Converts a module name to a file path. Supports cases where
1472 * moduleName may actually be just an URL.
1474 nameToUrl: function (moduleName, ext, relModuleMap) {
1475 var paths, pkgs, pkg, pkgPath, syms, i, parentModule, url,
1476 config = context.config;
1478 //Normalize module name if have a base relative module name to work from.
1479 moduleName = normalize(moduleName, relModuleMap && relModuleMap.fullName);
1481 //If a colon is in the URL, it indicates a protocol is used and it is just
1482 //an URL to a file, or if it starts with a slash, contains a query arg (i.e. ?)
1483 //or ends with .js, then assume the user meant to use an url and not a module id.
1484 //The slash is important for protocol-less URLs as well as full paths.
1485 if (req.jsExtRegExp.test(moduleName)) {
1486 //Just a plain path, not module name lookup, so just return it.
1487 //Add extension if it is included. This is a bit wonky, only non-.js things pass
1488 //an extension, this method probably needs to be reworked.
1489 url = moduleName + (ext ? ext : "");
1491 //A module that needs to be converted to a path.
1492 paths = config.paths;
1495 syms = moduleName.split("/");
1496 //For each module name segment, see if there is a path
1497 //registered for it. Start with most specific name
1498 //and work up from it.
1499 for (i = syms.length; i > 0; i--) {
1500 parentModule = syms.slice(0, i).join("/");
1501 if (paths[parentModule]) {
1502 syms.splice(0, i, paths[parentModule]);
1504 } else if ((pkg = pkgs[parentModule])) {
1505 //If module name is just the package name, then looking
1506 //for the main module.
1507 if (moduleName === pkg.name) {
1508 pkgPath = pkg.location + '/' + pkg.main;
1510 pkgPath = pkg.location;
1512 syms.splice(0, i, pkgPath);
1517 //Join the path parts together, then figure out if baseUrl is needed.
1518 url = syms.join("/") + (ext || ".js");
1519 url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? "" : config.baseUrl) + url;
1522 return config.urlArgs ? url +
1523 ((url.indexOf('?') === -1 ? '?' : '&') +
1524 config.urlArgs) : url;
1528 //Make these visible on the context so can be called at the very
1529 //end of the file to bootstrap
1530 context.jQueryCheck = jQueryCheck;
1531 context.resume = resume;
1539 * If the only argument to require is a string, then the module that
1540 * is represented by that string is fetched for the appropriate context.
1542 * If the first argument is an array, then it will be treated as an array
1543 * of dependency string names to fetch. An optional function callback can
1544 * be specified to execute when all of those dependencies are available.
1546 * Make a local req variable to help Caja compliance (it assumes things
1547 * on a require that are not standardized), and to give a short
1548 * name for minification/local scope use.
1550 req = requirejs = function (deps, callback) {
1552 //Find the right context, use default
1553 var contextName = defContextName,
1556 // Determine if have config object in the call.
1557 if (!isArray(deps) && typeof deps !== "string") {
1558 // deps is a config object
1560 if (isArray(callback)) {
1561 // Adjust args if there are dependencies
1563 callback = arguments[2];
1569 if (config && config.context) {
1570 contextName = config.context;
1573 context = contexts[contextName] ||
1574 (contexts[contextName] = newContext(contextName));
1577 context.configure(config);
1580 return context.require(deps, callback);
1584 * Support require.config() to make it easier to cooperate with other
1585 * AMD loaders on globally agreed names.
1587 req.config = function (config) {
1592 * Export require as a global, but only if it does not already exist.
1599 * Global require.toUrl(), to match global require, mostly useful
1600 * for debugging/work in the global space.
1602 req.toUrl = function (moduleNamePlusExt) {
1603 return contexts[defContextName].toUrl(moduleNamePlusExt);
1606 req.version = version;
1608 //Used to filter out dependencies that are already paths.
1609 req.jsExtRegExp = /^\/|:|\?|\.js$/;
1612 //Stores a list of URLs that should not get async script tag treatment.
1616 req.isAsync = req.isBrowser = isBrowser;
1618 head = s.head = document.getElementsByTagName("head")[0];
1619 //If BASE tag is in play, using appendChild is a problem for IE6.
1620 //When that browser dies, this can be removed. Details in this jQuery bug:
1621 //http://dev.jquery.com/ticket/2709
1622 baseElement = document.getElementsByTagName("base")[0];
1624 head = s.head = baseElement.parentNode;
1629 * Any errors that require explicitly generates will be passed to this
1630 * function. Intercept/override it if you want custom error handling.
1631 * @param {Error} err the error object.
1633 req.onError = function (err) {
1638 * Does the request to load a module for the browser case.
1639 * Make this a separate function to allow other environments
1642 * @param {Object} context the require context to find state.
1643 * @param {String} moduleName the name of the module.
1644 * @param {Object} url the URL to the module.
1646 req.load = function (context, moduleName, url) {
1647 req.resourcesReady(false);
1649 context.scriptCount += 1;
1650 req.attach(url, context, moduleName);
1652 //If tracking a jQuery, then make sure its ready callbacks
1653 //are put on hold to prevent its ready callbacks from
1654 //triggering too soon.
1655 if (context.jQuery && !context.jQueryIncremented) {
1656 jQueryHoldReady(context.jQuery, true);
1657 context.jQueryIncremented = true;
1661 function getInteractiveScript() {
1662 var scripts, i, script;
1663 if (interactiveScript && interactiveScript.readyState === 'interactive') {
1664 return interactiveScript;
1667 scripts = document.getElementsByTagName('script');
1668 for (i = scripts.length - 1; i > -1 && (script = scripts[i]); i--) {
1669 if (script.readyState === 'interactive') {
1670 return (interactiveScript = script);
1678 * The function that handles definitions of modules. Differs from
1679 * require() in that a string for the module should be the first argument,
1680 * and the function to execute after dependencies are loaded should
1681 * return a value to define the module corresponding to the first argument's
1684 define = function (name, deps, callback) {
1687 //Allow for anonymous functions
1688 if (typeof name !== 'string') {
1689 //Adjust args appropriately
1695 //This module may not have dependencies
1696 if (!isArray(deps)) {
1701 //If no name, and callback is a function, then figure out if it a
1702 //CommonJS thing with dependencies.
1703 if (!deps.length && isFunction(callback)) {
1704 //Remove comments from the callback string,
1705 //look for require calls, and pull them into the dependencies,
1706 //but only if there are function args.
1707 if (callback.length) {
1710 .replace(commentRegExp, "")
1711 .replace(cjsRequireRegExp, function (match, dep) {
1715 //May be a CommonJS thing even without require calls, but still
1716 //could use exports, and module. Avoid doing exports and module
1717 //work though if it just needs require.
1718 //REQUIRES the function to expect the CommonJS variables in the
1719 //order listed below.
1720 deps = (callback.length === 1 ? ["require"] : ["require", "exports", "module"]).concat(deps);
1724 //If in IE 6-8 and hit an anonymous define() call, do the interactive
1726 if (useInteractive) {
1727 node = currentlyAddingScript || getInteractiveScript();
1730 name = node.getAttribute("data-requiremodule");
1732 context = contexts[node.getAttribute("data-requirecontext")];
1736 //Always save off evaluating the def call until the script onload handler.
1737 //This allows multiple modules to be in a file without prematurely
1738 //tracing dependencies, and allows for anonymous module support,
1739 //where the module name is not known until the script onload event
1740 //occurs. If no context, use the global queue, and get it processed
1741 //in the onscript load callback.
1742 (context ? context.defQueue : globalDefQueue).push([name, deps, callback]);
1754 * Executes the text. Normally just uses eval, but can be modified
1755 * to use a more environment specific call.
1756 * @param {String} text the text to execute/evaluate.
1758 req.exec = function (text) {
1763 * Executes a module callack function. Broken out as a separate function
1764 * solely to allow the build system to sequence the files in the built
1765 * layer in the right sequence.
1769 req.execCb = function (name, callback, args, exports) {
1770 return callback.apply(exports, args);
1775 * Adds a node to the DOM. Public function since used by the order plugin.
1776 * This method should not normally be called by outside code.
1778 req.addScriptToDom = function (node) {
1779 //For some cache cases in IE 6-8, the script executes before the end
1780 //of the appendChild execution, so to tie an anonymous define
1781 //call to the module name (which is stored on the node), hold on
1782 //to a reference to this node, but clear after the DOM insertion.
1783 currentlyAddingScript = node;
1785 head.insertBefore(node, baseElement);
1787 head.appendChild(node);
1789 currentlyAddingScript = null;
1793 * callback for script loads, used to check status of loading.
1795 * @param {Event} evt the event from the browser for the script
1800 req.onScriptLoad = function (evt) {
1801 //Using currentTarget instead of target for Firefox 2.0's sake. Not
1802 //all old browsers will be supported, but this one was easy enough
1803 //to support and still makes sense.
1804 var node = evt.currentTarget || evt.srcElement, contextName, moduleName,
1807 if (evt.type === "load" || (node && readyRegExp.test(node.readyState))) {
1808 //Reset interactive script so a script node is not held onto for
1810 interactiveScript = null;
1812 //Pull out the name of the module and the context.
1813 contextName = node.getAttribute("data-requirecontext");
1814 moduleName = node.getAttribute("data-requiremodule");
1815 context = contexts[contextName];
1817 contexts[contextName].completeLoad(moduleName);
1819 //Clean up script binding. Favor detachEvent because of IE9
1820 //issue, see attachEvent/addEventListener comment elsewhere
1822 if (node.detachEvent && !isOpera) {
1823 //Probably IE. If not it will throw an error, which will be
1825 node.detachEvent("onreadystatechange", req.onScriptLoad);
1827 node.removeEventListener("load", req.onScriptLoad, false);
1833 * Attaches the script represented by the URL to the current
1834 * environment. Right now only supports browser loading,
1835 * but can be redefined in other environments to do the right thing.
1836 * @param {String} url the url of the script to attach.
1837 * @param {Object} context the context that wants the script.
1838 * @param {moduleName} the name of the module that is associated with the script.
1839 * @param {Function} [callback] optional callback, defaults to require.onScriptLoad
1840 * @param {String} [type] optional type, defaults to text/javascript
1841 * @param {Function} [fetchOnlyFunction] optional function to indicate the script node
1842 * should be set up to fetch the script but do not attach it to the DOM
1843 * so that it can later be attached to execute it. This is a way for the
1844 * order plugin to support ordered loading in IE. Once the script is fetched,
1845 * but not executed, the fetchOnlyFunction will be called.
1847 req.attach = function (url, context, moduleName, callback, type, fetchOnlyFunction) {
1850 //In the browser so use a script tag
1851 callback = callback || req.onScriptLoad;
1852 node = context && context.config && context.config.xhtml ?
1853 document.createElementNS("http://www.w3.org/1999/xhtml", "html:script") :
1854 document.createElement("script");
1855 node.type = type || (context && context.config.scriptType) ||
1857 node.charset = "utf-8";
1858 //Use async so Gecko does not block on executing the script if something
1859 //like a long-polling comet tag is being run first. Gecko likes
1860 //to evaluate scripts in DOM order, even for dynamic scripts.
1861 //It will fetch them async, but only evaluate the contents in DOM
1862 //order, so a long-polling script tag can delay execution of scripts
1863 //after it. But telling Gecko we expect async gets us the behavior
1864 //we want -- execute it whenever it is finished downloading. Only
1865 //Helps Firefox 3.6+
1866 //Allow some URLs to not be fetched async. Mostly helps the order!
1868 node.async = !s.skipAsync[url];
1871 node.setAttribute("data-requirecontext", context.contextName);
1873 node.setAttribute("data-requiremodule", moduleName);
1875 //Set up load listener. Test attachEvent first because IE9 has
1876 //a subtle issue in its addEventListener and script onload firings
1877 //that do not match the behavior of all other browsers with
1878 //addEventListener support, which fire the onload event for a
1879 //script right after the script execution. See:
1880 //https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution
1881 //UNFORTUNATELY Opera implements attachEvent but does not follow the script
1882 //script execution mode.
1883 if (node.attachEvent &&
1884 // check if node.attachEvent is artificially added by custom script or
1885 // natively supported by browser
1886 // read https://github.com/jrburke/requirejs/issues/187
1887 // if we can NOT find [native code] then it must NOT natively supported.
1888 // in IE8, node.attachEvent does not have toString()
1889 // TODO: a better way to check interactive mode
1890 !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code]') < 0) &&
1892 //Probably IE. IE (at least 6-8) do not fire
1893 //script onload right after executing the script, so
1894 //we cannot tie the anonymous define call to a name.
1895 //However, IE reports the script as being in "interactive"
1896 //readyState at the time of the define call.
1897 useInteractive = true;
1900 if (fetchOnlyFunction) {
1901 //Need to use old school onreadystate here since
1902 //when the event fires and the node is not attached
1903 //to the DOM, the evt.srcElement is null, so use
1904 //a closure to remember the node.
1905 node.onreadystatechange = function (evt) {
1906 //Script loaded but not executed.
1907 //Clear loaded handler, set the real one that
1908 //waits for script execution.
1909 if (node.readyState === 'loaded') {
1910 node.onreadystatechange = null;
1911 node.attachEvent("onreadystatechange", callback);
1912 fetchOnlyFunction(node);
1916 node.attachEvent("onreadystatechange", callback);
1919 node.addEventListener("load", callback, false);
1923 //Fetch only means waiting to attach to DOM after loaded.
1924 if (!fetchOnlyFunction) {
1925 req.addScriptToDom(node);
1929 } else if (isWebWorker) {
1930 //In a web worker, use importScripts. This is not a very
1931 //efficient use of importScripts, importScripts will block until
1932 //its script is downloaded and evaluated. However, if web workers
1933 //are in play, the expectation that a build has been done so that
1934 //only one script needs to be loaded anyway. This may need to be
1935 //reevaluated if other use cases become common.
1938 //Account for anonymous modules
1939 context.completeLoad(moduleName);
1944 //Look for a data-main script attribute, which could also adjust the baseUrl.
1946 //Figure out baseUrl. Get it from the script tag with require.js in it.
1947 scripts = document.getElementsByTagName("script");
1949 for (globalI = scripts.length - 1; globalI > -1 && (script = scripts[globalI]); globalI--) {
1950 //Set the "head" where we can append children by
1951 //using the script's parent.
1953 head = script.parentNode;
1956 //Look for a data-main attribute to set main script for the page
1957 //to load. If it is there, the path to data main becomes the
1958 //baseUrl, if it is not already set.
1959 if ((dataMain = script.getAttribute('data-main'))) {
1961 //Pull off the directory of data-main for use as the
1963 src = dataMain.split('/');
1964 mainScript = src.pop();
1965 subPath = src.length ? src.join('/') + '/' : './';
1968 cfg.baseUrl = subPath;
1969 //Strip off any trailing .js since dataMain is now
1970 //like a module name.
1971 dataMain = mainScript.replace(jsSuffixRegExp, '');
1974 //Put the data-main script in the files to load.
1975 cfg.deps = cfg.deps ? cfg.deps.concat(dataMain) : [dataMain];
1982 //See if there is nothing waiting across contexts, and if not, trigger
1984 req.checkReadyState = function () {
1985 var contexts = s.contexts, prop;
1986 for (prop in contexts) {
1987 if (!(prop in empty)) {
1988 if (contexts[prop].waitCount) {
1993 req.resourcesReady(true);
1997 * Internal function that is triggered whenever all scripts/resources
1998 * have been loaded by the loader. Can be overridden by other, for
1999 * instance the domReady plugin, which wants to know when all resources
2002 req.resourcesReady = function (isReady) {
2003 var contexts, context, prop;
2005 //First, set the public variable indicating that resources are loading.
2006 req.resourcesDone = isReady;
2008 if (req.resourcesDone) {
2009 //If jQuery with DOM ready delayed, release it now.
2010 contexts = s.contexts;
2011 for (prop in contexts) {
2012 if (!(prop in empty)) {
2013 context = contexts[prop];
2014 if (context.jQueryIncremented) {
2015 jQueryHoldReady(context.jQuery, false);
2016 context.jQueryIncremented = false;
2023 //FF < 3.6 readyState fix. Needed so that domReady plugin
2024 //works well in that environment, since require.js is normally
2025 //loaded via an HTML script tag so it will be there before window load,
2026 //where the domReady plugin is more likely to be loaded after window load.
2027 req.pageLoaded = function () {
2028 if (document.readyState !== "complete") {
2029 document.readyState = "complete";
2033 if (document.addEventListener) {
2034 if (!document.readyState) {
2035 document.readyState = "loading";
2036 window.addEventListener("load", req.pageLoaded, false);
2041 //Set up default context. If require was a configuration object, use that as base config.
2044 //If modules are built into require.js, then need to make sure dependencies are
2045 //traced. Use a setTimeout in the browser world, to allow all the modules to register
2046 //themselves. In a non-browser env, assume that modules are not built into require.js,
2047 //which seems odd to do on the server.
2048 if (req.isAsync && typeof setTimeout !== "undefined") {
2049 ctx = s.contexts[(cfg.context || defContextName)];
2050 //Indicate that the script that includes require() is still loading,
2051 //so that require()'d dependencies are not traced until the end of the
2052 //file is parsed (approximated via the setTimeout call).
2053 ctx.requireWait = true;
2054 setTimeout(function () {
2055 ctx.requireWait = false;
2057 if (!ctx.scriptCount) {
2060 req.checkReadyState();