weekly release 3.0dev
[moodle.git] / lib / requirejs / require.js
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1/** vim: et:ts=4:sw=4:sts=4
2 * @license RequireJS 2.1.15 Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved.
3 * Available via the MIT or new BSD license.
4 * see: http://github.com/jrburke/requirejs for details
5 */
6//Not using strict: uneven strict support in browsers, #392, and causes
7//problems with requirejs.exec()/transpiler plugins that may not be strict.
8/*jslint regexp: true, nomen: true, sloppy: true */
9/*global window, navigator, document, importScripts, setTimeout, opera */
10
11var requirejs, require, define;
12(function (global) {
13 var req, s, head, baseElement, dataMain, src,
14 interactiveScript, currentlyAddingScript, mainScript, subPath,
15 version = '2.1.15',
16 commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg,
17 cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g,
18 jsSuffixRegExp = /\.js$/,
19 currDirRegExp = /^\.\//,
20 op = Object.prototype,
21 ostring = op.toString,
22 hasOwn = op.hasOwnProperty,
23 ap = Array.prototype,
24 apsp = ap.splice,
25 isBrowser = !!(typeof window !== 'undefined' && typeof navigator !== 'undefined' && window.document),
26 isWebWorker = !isBrowser && typeof importScripts !== 'undefined',
27 //PS3 indicates loaded and complete, but need to wait for complete
28 //specifically. Sequence is 'loading', 'loaded', execution,
29 // then 'complete'. The UA check is unfortunate, but not sure how
30 //to feature test w/o causing perf issues.
31 readyRegExp = isBrowser && navigator.platform === 'PLAYSTATION 3' ?
32 /^complete$/ : /^(complete|loaded)$/,
33 defContextName = '_',
34 //Oh the tragedy, detecting opera. See the usage of isOpera for reason.
35 isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]',
36 contexts = {},
37 cfg = {},
38 globalDefQueue = [],
39 useInteractive = false;
40
41 function isFunction(it) {
42 return ostring.call(it) === '[object Function]';
43 }
44
45 function isArray(it) {
46 return ostring.call(it) === '[object Array]';
47 }
48
49 /**
50 * Helper function for iterating over an array. If the func returns
51 * a true value, it will break out of the loop.
52 */
53 function each(ary, func) {
54 if (ary) {
55 var i;
56 for (i = 0; i < ary.length; i += 1) {
57 if (ary[i] && func(ary[i], i, ary)) {
58 break;
59 }
60 }
61 }
62 }
63
64 /**
65 * Helper function for iterating over an array backwards. If the func
66 * returns a true value, it will break out of the loop.
67 */
68 function eachReverse(ary, func) {
69 if (ary) {
70 var i;
71 for (i = ary.length - 1; i > -1; i -= 1) {
72 if (ary[i] && func(ary[i], i, ary)) {
73 break;
74 }
75 }
76 }
77 }
78
79 function hasProp(obj, prop) {
80 return hasOwn.call(obj, prop);
81 }
82
83 function getOwn(obj, prop) {
84 return hasProp(obj, prop) && obj[prop];
85 }
86
87 /**
88 * Cycles over properties in an object and calls a function for each
89 * property value. If the function returns a truthy value, then the
90 * iteration is stopped.
91 */
92 function eachProp(obj, func) {
93 var prop;
94 for (prop in obj) {
95 if (hasProp(obj, prop)) {
96 if (func(obj[prop], prop)) {
97 break;
98 }
99 }
100 }
101 }
102
103 /**
104 * Simple function to mix in properties from source into target,
105 * but only if target does not already have a property of the same name.
106 */
107 function mixin(target, source, force, deepStringMixin) {
108 if (source) {
109 eachProp(source, function (value, prop) {
110 if (force || !hasProp(target, prop)) {
111 if (deepStringMixin && typeof value === 'object' && value &&
112 !isArray(value) && !isFunction(value) &&
113 !(value instanceof RegExp)) {
114
115 if (!target[prop]) {
116 target[prop] = {};
117 }
118 mixin(target[prop], value, force, deepStringMixin);
119 } else {
120 target[prop] = value;
121 }
122 }
123 });
124 }
125 return target;
126 }
127
128 //Similar to Function.prototype.bind, but the 'this' object is specified
129 //first, since it is easier to read/figure out what 'this' will be.
130 function bind(obj, fn) {
131 return function () {
132 return fn.apply(obj, arguments);
133 };
134 }
135
136 function scripts() {
137 return document.getElementsByTagName('script');
138 }
139
140 function defaultOnError(err) {
141 throw err;
142 }
143
144 //Allow getting a global that is expressed in
145 //dot notation, like 'a.b.c'.
146 function getGlobal(value) {
147 if (!value) {
148 return value;
149 }
150 var g = global;
151 each(value.split('.'), function (part) {
152 g = g[part];
153 });
154 return g;
155 }
156
157 /**
158 * Constructs an error with a pointer to an URL with more information.
159 * @param {String} id the error ID that maps to an ID on a web page.
160 * @param {String} message human readable error.
161 * @param {Error} [err] the original error, if there is one.
162 *
163 * @returns {Error}
164 */
165 function makeError(id, msg, err, requireModules) {
166 var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id);
167 e.requireType = id;
168 e.requireModules = requireModules;
169 if (err) {
170 e.originalError = err;
171 }
172 return e;
173 }
174
175 if (typeof define !== 'undefined') {
176 //If a define is already in play via another AMD loader,
177 //do not overwrite.
178 return;
179 }
180
181 if (typeof requirejs !== 'undefined') {
182 if (isFunction(requirejs)) {
183 //Do not overwrite an existing requirejs instance.
184 return;
185 }
186 cfg = requirejs;
187 requirejs = undefined;
188 }
189
190 //Allow for a require config object
191 if (typeof require !== 'undefined' && !isFunction(require)) {
192 //assume it is a config object.
193 cfg = require;
194 require = undefined;
195 }
196
197 function newContext(contextName) {
198 var inCheckLoaded, Module, context, handlers,
199 checkLoadedTimeoutId,
200 config = {
201 //Defaults. Do not set a default for map
202 //config to speed up normalize(), which
203 //will run faster if there is no default.
204 waitSeconds: 7,
205 baseUrl: './',
206 paths: {},
207 bundles: {},
208 pkgs: {},
209 shim: {},
210 config: {}
211 },
212 registry = {},
213 //registry of just enabled modules, to speed
214 //cycle breaking code when lots of modules
215 //are registered, but not activated.
216 enabledRegistry = {},
217 undefEvents = {},
218 defQueue = [],
219 defined = {},
220 urlFetched = {},
221 bundlesMap = {},
222 requireCounter = 1,
223 unnormalizedCounter = 1;
224
225 /**
226 * Trims the . and .. from an array of path segments.
227 * It will keep a leading path segment if a .. will become
228 * the first path segment, to help with module name lookups,
229 * which act like paths, but can be remapped. But the end result,
230 * all paths that use this function should look normalized.
231 * NOTE: this method MODIFIES the input array.
232 * @param {Array} ary the array of path segments.
233 */
234 function trimDots(ary) {
235 var i, part;
236 for (i = 0; i < ary.length; i++) {
237 part = ary[i];
238 if (part === '.') {
239 ary.splice(i, 1);
240 i -= 1;
241 } else if (part === '..') {
242 // If at the start, or previous value is still ..,
243 // keep them so that when converted to a path it may
244 // still work when converted to a path, even though
245 // as an ID it is less than ideal. In larger point
246 // releases, may be better to just kick out an error.
247 if (i === 0 || (i == 1 && ary[2] === '..') || ary[i - 1] === '..') {
248 continue;
249 } else if (i > 0) {
250 ary.splice(i - 1, 2);
251 i -= 2;
252 }
253 }
254 }
255 }
256
257 /**
258 * Given a relative module name, like ./something, normalize it to
259 * a real name that can be mapped to a path.
260 * @param {String} name the relative name
261 * @param {String} baseName a real name that the name arg is relative
262 * to.
263 * @param {Boolean} applyMap apply the map config to the value. Should
264 * only be done if this normalization is for a dependency ID.
265 * @returns {String} normalized name
266 */
267 function normalize(name, baseName, applyMap) {
268 var pkgMain, mapValue, nameParts, i, j, nameSegment, lastIndex,
269 foundMap, foundI, foundStarMap, starI, normalizedBaseParts,
270 baseParts = (baseName && baseName.split('/')),
271 map = config.map,
272 starMap = map && map['*'];
273
274 //Adjust any relative paths.
275 if (name) {
276 name = name.split('/');
277 lastIndex = name.length - 1;
278
279 // If wanting node ID compatibility, strip .js from end
280 // of IDs. Have to do this here, and not in nameToUrl
281 // because node allows either .js or non .js to map
282 // to same file.
283 if (config.nodeIdCompat && jsSuffixRegExp.test(name[lastIndex])) {
284 name[lastIndex] = name[lastIndex].replace(jsSuffixRegExp, '');
285 }
286
287 // Starts with a '.' so need the baseName
288 if (name[0].charAt(0) === '.' && baseParts) {
289 //Convert baseName to array, and lop off the last part,
290 //so that . matches that 'directory' and not name of the baseName's
291 //module. For instance, baseName of 'one/two/three', maps to
292 //'one/two/three.js', but we want the directory, 'one/two' for
293 //this normalization.
294 normalizedBaseParts = baseParts.slice(0, baseParts.length - 1);
295 name = normalizedBaseParts.concat(name);
296 }
297
298 trimDots(name);
299 name = name.join('/');
300 }
301
302 //Apply map config if available.
303 if (applyMap && map && (baseParts || starMap)) {
304 nameParts = name.split('/');
305
306 outerLoop: for (i = nameParts.length; i > 0; i -= 1) {
307 nameSegment = nameParts.slice(0, i).join('/');
308
309 if (baseParts) {
310 //Find the longest baseName segment match in the config.
311 //So, do joins on the biggest to smallest lengths of baseParts.
312 for (j = baseParts.length; j > 0; j -= 1) {
313 mapValue = getOwn(map, baseParts.slice(0, j).join('/'));
314
315 //baseName segment has config, find if it has one for
316 //this name.
317 if (mapValue) {
318 mapValue = getOwn(mapValue, nameSegment);
319 if (mapValue) {
320 //Match, update name to the new value.
321 foundMap = mapValue;
322 foundI = i;
323 break outerLoop;
324 }
325 }
326 }
327 }
328
329 //Check for a star map match, but just hold on to it,
330 //if there is a shorter segment match later in a matching
331 //config, then favor over this star map.
332 if (!foundStarMap && starMap && getOwn(starMap, nameSegment)) {
333 foundStarMap = getOwn(starMap, nameSegment);
334 starI = i;
335 }
336 }
337
338 if (!foundMap && foundStarMap) {
339 foundMap = foundStarMap;
340 foundI = starI;
341 }
342
343 if (foundMap) {
344 nameParts.splice(0, foundI, foundMap);
345 name = nameParts.join('/');
346 }
347 }
348
349 // If the name points to a package's name, use
350 // the package main instead.
351 pkgMain = getOwn(config.pkgs, name);
352
353 return pkgMain ? pkgMain : name;
354 }
355
356 function removeScript(name) {
357 if (isBrowser) {
358 each(scripts(), function (scriptNode) {
359 if (scriptNode.getAttribute('data-requiremodule') === name &&
360 scriptNode.getAttribute('data-requirecontext') === context.contextName) {
361 scriptNode.parentNode.removeChild(scriptNode);
362 return true;
363 }
364 });
365 }
366 }
367
368 function hasPathFallback(id) {
369 var pathConfig = getOwn(config.paths, id);
370 if (pathConfig && isArray(pathConfig) && pathConfig.length > 1) {
371 //Pop off the first array value, since it failed, and
372 //retry
373 pathConfig.shift();
374 context.require.undef(id);
375
376 //Custom require that does not do map translation, since
377 //ID is "absolute", already mapped/resolved.
378 context.makeRequire(null, {
379 skipMap: true
380 })([id]);
381
382 return true;
383 }
384 }
385
386 //Turns a plugin!resource to [plugin, resource]
387 //with the plugin being undefined if the name
388 //did not have a plugin prefix.
389 function splitPrefix(name) {
390 var prefix,
391 index = name ? name.indexOf('!') : -1;
392 if (index > -1) {
393 prefix = name.substring(0, index);
394 name = name.substring(index + 1, name.length);
395 }
396 return [prefix, name];
397 }
398
399 /**
400 * Creates a module mapping that includes plugin prefix, module
401 * name, and path. If parentModuleMap is provided it will
402 * also normalize the name via require.normalize()
403 *
404 * @param {String} name the module name
405 * @param {String} [parentModuleMap] parent module map
406 * for the module name, used to resolve relative names.
407 * @param {Boolean} isNormalized: is the ID already normalized.
408 * This is true if this call is done for a define() module ID.
409 * @param {Boolean} applyMap: apply the map config to the ID.
410 * Should only be true if this map is for a dependency.
411 *
412 * @returns {Object}
413 */
414 function makeModuleMap(name, parentModuleMap, isNormalized, applyMap) {
415 var url, pluginModule, suffix, nameParts,
416 prefix = null,
417 parentName = parentModuleMap ? parentModuleMap.name : null,
418 originalName = name,
419 isDefine = true,
420 normalizedName = '';
421
422 //If no name, then it means it is a require call, generate an
423 //internal name.
424 if (!name) {
425 isDefine = false;
426 name = '_@r' + (requireCounter += 1);
427 }
428
429 nameParts = splitPrefix(name);
430 prefix = nameParts[0];
431 name = nameParts[1];
432
433 if (prefix) {
434 prefix = normalize(prefix, parentName, applyMap);
435 pluginModule = getOwn(defined, prefix);
436 }
437
438 //Account for relative paths if there is a base name.
439 if (name) {
440 if (prefix) {
441 if (pluginModule && pluginModule.normalize) {
442 //Plugin is loaded, use its normalize method.
443 normalizedName = pluginModule.normalize(name, function (name) {
444 return normalize(name, parentName, applyMap);
445 });
446 } else {
447 // If nested plugin references, then do not try to
448 // normalize, as it will not normalize correctly. This
449 // places a restriction on resourceIds, and the longer
450 // term solution is not to normalize until plugins are
451 // loaded and all normalizations to allow for async
452 // loading of a loader plugin. But for now, fixes the
453 // common uses. Details in #1131
454 normalizedName = name.indexOf('!') === -1 ?
455 normalize(name, parentName, applyMap) :
456 name;
457 }
458 } else {
459 //A regular module.
460 normalizedName = normalize(name, parentName, applyMap);
461
462 //Normalized name may be a plugin ID due to map config
463 //application in normalize. The map config values must
464 //already be normalized, so do not need to redo that part.
465 nameParts = splitPrefix(normalizedName);
466 prefix = nameParts[0];
467 normalizedName = nameParts[1];
468 isNormalized = true;
469
470 url = context.nameToUrl(normalizedName);
471 }
472 }
473
474 //If the id is a plugin id that cannot be determined if it needs
475 //normalization, stamp it with a unique ID so two matching relative
476 //ids that may conflict can be separate.
477 suffix = prefix && !pluginModule && !isNormalized ?
478 '_unnormalized' + (unnormalizedCounter += 1) :
479 '';
480
481 return {
482 prefix: prefix,
483 name: normalizedName,
484 parentMap: parentModuleMap,
485 unnormalized: !!suffix,
486 url: url,
487 originalName: originalName,
488 isDefine: isDefine,
489 id: (prefix ?
490 prefix + '!' + normalizedName :
491 normalizedName) + suffix
492 };
493 }
494
495 function getModule(depMap) {
496 var id = depMap.id,
497 mod = getOwn(registry, id);
498
499 if (!mod) {
500 mod = registry[id] = new context.Module(depMap);
501 }
502
503 return mod;
504 }
505
506 function on(depMap, name, fn) {
507 var id = depMap.id,
508 mod = getOwn(registry, id);
509
510 if (hasProp(defined, id) &&
511 (!mod || mod.defineEmitComplete)) {
512 if (name === 'defined') {
513 fn(defined[id]);
514 }
515 } else {
516 mod = getModule(depMap);
517 if (mod.error && name === 'error') {
518 fn(mod.error);
519 } else {
520 mod.on(name, fn);
521 }
522 }
523 }
524
525 function onError(err, errback) {
526 var ids = err.requireModules,
527 notified = false;
528
529 if (errback) {
530 errback(err);
531 } else {
532 each(ids, function (id) {
533 var mod = getOwn(registry, id);
534 if (mod) {
535 //Set error on module, so it skips timeout checks.
536 mod.error = err;
537 if (mod.events.error) {
538 notified = true;
539 mod.emit('error', err);
540 }
541 }
542 });
543
544 if (!notified) {
545 req.onError(err);
546 }
547 }
548 }
549
550 /**
551 * Internal method to transfer globalQueue items to this context's
552 * defQueue.
553 */
554 function takeGlobalQueue() {
555 //Push all the globalDefQueue items into the context's defQueue
556 if (globalDefQueue.length) {
557 //Array splice in the values since the context code has a
558 //local var ref to defQueue, so cannot just reassign the one
559 //on context.
560 apsp.apply(defQueue,
561 [defQueue.length, 0].concat(globalDefQueue));
562 globalDefQueue = [];
563 }
564 }
565
566 handlers = {
567 'require': function (mod) {
568 if (mod.require) {
569 return mod.require;
570 } else {
571 return (mod.require = context.makeRequire(mod.map));
572 }
573 },
574 'exports': function (mod) {
575 mod.usingExports = true;
576 if (mod.map.isDefine) {
577 if (mod.exports) {
578 return (defined[mod.map.id] = mod.exports);
579 } else {
580 return (mod.exports = defined[mod.map.id] = {});
581 }
582 }
583 },
584 'module': function (mod) {
585 if (mod.module) {
586 return mod.module;
587 } else {
588 return (mod.module = {
589 id: mod.map.id,
590 uri: mod.map.url,
591 config: function () {
592 return getOwn(config.config, mod.map.id) || {};
593 },
594 exports: mod.exports || (mod.exports = {})
595 });
596 }
597 }
598 };
599
600 function cleanRegistry(id) {
601 //Clean up machinery used for waiting modules.
602 delete registry[id];
603 delete enabledRegistry[id];
604 }
605
606 function breakCycle(mod, traced, processed) {
607 var id = mod.map.id;
608
609 if (mod.error) {
610 mod.emit('error', mod.error);
611 } else {
612 traced[id] = true;
613 each(mod.depMaps, function (depMap, i) {
614 var depId = depMap.id,
615 dep = getOwn(registry, depId);
616
617 //Only force things that have not completed
618 //being defined, so still in the registry,
619 //and only if it has not been matched up
620 //in the module already.
621 if (dep && !mod.depMatched[i] && !processed[depId]) {
622 if (getOwn(traced, depId)) {
623 mod.defineDep(i, defined[depId]);
624 mod.check(); //pass false?
625 } else {
626 breakCycle(dep, traced, processed);
627 }
628 }
629 });
630 processed[id] = true;
631 }
632 }
633
634 function checkLoaded() {
635 var err, usingPathFallback,
636 waitInterval = config.waitSeconds * 1000,
637 //It is possible to disable the wait interval by using waitSeconds of 0.
638 expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(),
639 noLoads = [],
640 reqCalls = [],
641 stillLoading = false,
642 needCycleCheck = true;
643
644 //Do not bother if this call was a result of a cycle break.
645 if (inCheckLoaded) {
646 return;
647 }
648
649 inCheckLoaded = true;
650
651 //Figure out the state of all the modules.
652 eachProp(enabledRegistry, function (mod) {
653 var map = mod.map,
654 modId = map.id;
655
656 //Skip things that are not enabled or in error state.
657 if (!mod.enabled) {
658 return;
659 }
660
661 if (!map.isDefine) {
662 reqCalls.push(mod);
663 }
664
665 if (!mod.error) {
666 //If the module should be executed, and it has not
667 //been inited and time is up, remember it.
668 if (!mod.inited && expired) {
669 if (hasPathFallback(modId)) {
670 usingPathFallback = true;
671 stillLoading = true;
672 } else {
673 noLoads.push(modId);
674 removeScript(modId);
675 }
676 } else if (!mod.inited && mod.fetched && map.isDefine) {
677 stillLoading = true;
678 if (!map.prefix) {
679 //No reason to keep looking for unfinished
680 //loading. If the only stillLoading is a
681 //plugin resource though, keep going,
682 //because it may be that a plugin resource
683 //is waiting on a non-plugin cycle.
684 return (needCycleCheck = false);
685 }
686 }
687 }
688 });
689
690 if (expired && noLoads.length) {
691 //If wait time expired, throw error of unloaded modules.
692 err = makeError('timeout', 'Load timeout for modules: ' + noLoads, null, noLoads);
693 err.contextName = context.contextName;
694 return onError(err);
695 }
696
697 //Not expired, check for a cycle.
698 if (needCycleCheck) {
699 each(reqCalls, function (mod) {
700 breakCycle(mod, {}, {});
701 });
702 }
703
704 //If still waiting on loads, and the waiting load is something
705 //other than a plugin resource, or there are still outstanding
706 //scripts, then just try back later.
707 if ((!expired || usingPathFallback) && stillLoading) {
708 //Something is still waiting to load. Wait for it, but only
709 //if a timeout is not already in effect.
710 if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) {
711 checkLoadedTimeoutId = setTimeout(function () {
712 checkLoadedTimeoutId = 0;
713 checkLoaded();
714 }, 50);
715 }
716 }
717
718 inCheckLoaded = false;
719 }
720
721 Module = function (map) {
722 this.events = getOwn(undefEvents, map.id) || {};
723 this.map = map;
724 this.shim = getOwn(config.shim, map.id);
725 this.depExports = [];
726 this.depMaps = [];
727 this.depMatched = [];
728 this.pluginMaps = {};
729 this.depCount = 0;
730
731 /* this.exports this.factory
732 this.depMaps = [],
733 this.enabled, this.fetched
734 */
735 };
736
737 Module.prototype = {
738 init: function (depMaps, factory, errback, options) {
739 options = options || {};
740
741 //Do not do more inits if already done. Can happen if there
742 //are multiple define calls for the same module. That is not
743 //a normal, common case, but it is also not unexpected.
744 if (this.inited) {
745 return;
746 }
747
748 this.factory = factory;
749
750 if (errback) {
751 //Register for errors on this module.
752 this.on('error', errback);
753 } else if (this.events.error) {
754 //If no errback already, but there are error listeners
755 //on this module, set up an errback to pass to the deps.
756 errback = bind(this, function (err) {
757 this.emit('error', err);
758 });
759 }
760
761 //Do a copy of the dependency array, so that
762 //source inputs are not modified. For example
763 //"shim" deps are passed in here directly, and
764 //doing a direct modification of the depMaps array
765 //would affect that config.
766 this.depMaps = depMaps && depMaps.slice(0);
767
768 this.errback = errback;
769
770 //Indicate this module has be initialized
771 this.inited = true;
772
773 this.ignore = options.ignore;
774
775 //Could have option to init this module in enabled mode,
776 //or could have been previously marked as enabled. However,
777 //the dependencies are not known until init is called. So
778 //if enabled previously, now trigger dependencies as enabled.
779 if (options.enabled || this.enabled) {
780 //Enable this module and dependencies.
781 //Will call this.check()
782 this.enable();
783 } else {
784 this.check();
785 }
786 },
787
788 defineDep: function (i, depExports) {
789 //Because of cycles, defined callback for a given
790 //export can be called more than once.
791 if (!this.depMatched[i]) {
792 this.depMatched[i] = true;
793 this.depCount -= 1;
794 this.depExports[i] = depExports;
795 }
796 },
797
798 fetch: function () {
799 if (this.fetched) {
800 return;
801 }
802 this.fetched = true;
803
804 context.startTime = (new Date()).getTime();
805
806 var map = this.map;
807
808 //If the manager is for a plugin managed resource,
809 //ask the plugin to load it now.
810 if (this.shim) {
811 context.makeRequire(this.map, {
812 enableBuildCallback: true
813 })(this.shim.deps || [], bind(this, function () {
814 return map.prefix ? this.callPlugin() : this.load();
815 }));
816 } else {
817 //Regular dependency.
818 return map.prefix ? this.callPlugin() : this.load();
819 }
820 },
821
822 load: function () {
823 var url = this.map.url;
824
825 //Regular dependency.
826 if (!urlFetched[url]) {
827 urlFetched[url] = true;
828 context.load(this.map.id, url);
829 }
830 },
831
832 /**
833 * Checks if the module is ready to define itself, and if so,
834 * define it.
835 */
836 check: function () {
837 if (!this.enabled || this.enabling) {
838 return;
839 }
840
841 var err, cjsModule,
842 id = this.map.id,
843 depExports = this.depExports,
844 exports = this.exports,
845 factory = this.factory;
846
847 if (!this.inited) {
848 this.fetch();
849 } else if (this.error) {
850 this.emit('error', this.error);
851 } else if (!this.defining) {
852 //The factory could trigger another require call
853 //that would result in checking this module to
854 //define itself again. If already in the process
855 //of doing that, skip this work.
856 this.defining = true;
857
858 if (this.depCount < 1 && !this.defined) {
859 if (isFunction(factory)) {
860 //If there is an error listener, favor passing
861 //to that instead of throwing an error. However,
862 //only do it for define()'d modules. require
863 //errbacks should not be called for failures in
864 //their callbacks (#699). However if a global
865 //onError is set, use that.
866 if ((this.events.error && this.map.isDefine) ||
867 req.onError !== defaultOnError) {
868 try {
869 exports = context.execCb(id, factory, depExports, exports);
870 } catch (e) {
871 err = e;
872 }
873 } else {
874 exports = context.execCb(id, factory, depExports, exports);
875 }
876
877 // Favor return value over exports. If node/cjs in play,
878 // then will not have a return value anyway. Favor
879 // module.exports assignment over exports object.
880 if (this.map.isDefine && exports === undefined) {
881 cjsModule = this.module;
882 if (cjsModule) {
883 exports = cjsModule.exports;
884 } else if (this.usingExports) {
885 //exports already set the defined value.
886 exports = this.exports;
887 }
888 }
889
890 if (err) {
891 err.requireMap = this.map;
892 err.requireModules = this.map.isDefine ? [this.map.id] : null;
893 err.requireType = this.map.isDefine ? 'define' : 'require';
894 return onError((this.error = err));
895 }
896
897 } else {
898 //Just a literal value
899 exports = factory;
900 }
901
902 this.exports = exports;
903
904 if (this.map.isDefine && !this.ignore) {
905 defined[id] = exports;
906
907 if (req.onResourceLoad) {
908 req.onResourceLoad(context, this.map, this.depMaps);
909 }
910 }
911
912 //Clean up
913 cleanRegistry(id);
914
915 this.defined = true;
916 }
917
918 //Finished the define stage. Allow calling check again
919 //to allow define notifications below in the case of a
920 //cycle.
921 this.defining = false;
922
923 if (this.defined && !this.defineEmitted) {
924 this.defineEmitted = true;
925 this.emit('defined', this.exports);
926 this.defineEmitComplete = true;
927 }
928
929 }
930 },
931
932 callPlugin: function () {
933 var map = this.map,
934 id = map.id,
935 //Map already normalized the prefix.
936 pluginMap = makeModuleMap(map.prefix);
937
938 //Mark this as a dependency for this plugin, so it
939 //can be traced for cycles.
940 this.depMaps.push(pluginMap);
941
942 on(pluginMap, 'defined', bind(this, function (plugin) {
943 var load, normalizedMap, normalizedMod,
944 bundleId = getOwn(bundlesMap, this.map.id),
945 name = this.map.name,
946 parentName = this.map.parentMap ? this.map.parentMap.name : null,
947 localRequire = context.makeRequire(map.parentMap, {
948 enableBuildCallback: true
949 });
950
951 //If current map is not normalized, wait for that
952 //normalized name to load instead of continuing.
953 if (this.map.unnormalized) {
954 //Normalize the ID if the plugin allows it.
955 if (plugin.normalize) {
956 name = plugin.normalize(name, function (name) {
957 return normalize(name, parentName, true);
958 }) || '';
959 }
960
961 //prefix and name should already be normalized, no need
962 //for applying map config again either.
963 normalizedMap = makeModuleMap(map.prefix + '!' + name,
964 this.map.parentMap);
965 on(normalizedMap,
966 'defined', bind(this, function (value) {
967 this.init([], function () { return value; }, null, {
968 enabled: true,
969 ignore: true
970 });
971 }));
972
973 normalizedMod = getOwn(registry, normalizedMap.id);
974 if (normalizedMod) {
975 //Mark this as a dependency for this plugin, so it
976 //can be traced for cycles.
977 this.depMaps.push(normalizedMap);
978
979 if (this.events.error) {
980 normalizedMod.on('error', bind(this, function (err) {
981 this.emit('error', err);
982 }));
983 }
984 normalizedMod.enable();
985 }
986
987 return;
988 }
989
990 //If a paths config, then just load that file instead to
991 //resolve the plugin, as it is built into that paths layer.
992 if (bundleId) {
993 this.map.url = context.nameToUrl(bundleId);
994 this.load();
995 return;
996 }
997
998 load = bind(this, function (value) {
999 this.init([], function () { return value; }, null, {
1000 enabled: true
1001 });
1002 });
1003
1004 load.error = bind(this, function (err) {
1005 this.inited = true;
1006 this.error = err;
1007 err.requireModules = [id];
1008
1009 //Remove temp unnormalized modules for this module,
1010 //since they will never be resolved otherwise now.
1011 eachProp(registry, function (mod) {
1012 if (mod.map.id.indexOf(id + '_unnormalized') === 0) {
1013 cleanRegistry(mod.map.id);
1014 }
1015 });
1016
1017 onError(err);
1018 });
1019
1020 //Allow plugins to load other code without having to know the
1021 //context or how to 'complete' the load.
1022 load.fromText = bind(this, function (text, textAlt) {
1023 /*jslint evil: true */
1024 var moduleName = map.name,
1025 moduleMap = makeModuleMap(moduleName),
1026 hasInteractive = useInteractive;
1027
1028 //As of 2.1.0, support just passing the text, to reinforce
1029 //fromText only being called once per resource. Still
1030 //support old style of passing moduleName but discard
1031 //that moduleName in favor of the internal ref.
1032 if (textAlt) {
1033 text = textAlt;
1034 }
1035
1036 //Turn off interactive script matching for IE for any define
1037 //calls in the text, then turn it back on at the end.
1038 if (hasInteractive) {
1039 useInteractive = false;
1040 }
1041
1042 //Prime the system by creating a module instance for
1043 //it.
1044 getModule(moduleMap);
1045
1046 //Transfer any config to this other module.
1047 if (hasProp(config.config, id)) {
1048 config.config[moduleName] = config.config[id];
1049 }
1050
1051 try {
1052 req.exec(text);
1053 } catch (e) {
1054 return onError(makeError('fromtexteval',
1055 'fromText eval for ' + id +
1056 ' failed: ' + e,
1057 e,
1058 [id]));
1059 }
1060
1061 if (hasInteractive) {
1062 useInteractive = true;
1063 }
1064
1065 //Mark this as a dependency for the plugin
1066 //resource
1067 this.depMaps.push(moduleMap);
1068
1069 //Support anonymous modules.
1070 context.completeLoad(moduleName);
1071
1072 //Bind the value of that module to the value for this
1073 //resource ID.
1074 localRequire([moduleName], load);
1075 });
1076
1077 //Use parentName here since the plugin's name is not reliable,
1078 //could be some weird string with no path that actually wants to
1079 //reference the parentName's path.
1080 plugin.load(map.name, localRequire, load, config);
1081 }));
1082
1083 context.enable(pluginMap, this);
1084 this.pluginMaps[pluginMap.id] = pluginMap;
1085 },
1086
1087 enable: function () {
1088 enabledRegistry[this.map.id] = this;
1089 this.enabled = true;
1090
1091 //Set flag mentioning that the module is enabling,
1092 //so that immediate calls to the defined callbacks
1093 //for dependencies do not trigger inadvertent load
1094 //with the depCount still being zero.
1095 this.enabling = true;
1096
1097 //Enable each dependency
1098 each(this.depMaps, bind(this, function (depMap, i) {
1099 var id, mod, handler;
1100
1101 if (typeof depMap === 'string') {
1102 //Dependency needs to be converted to a depMap
1103 //and wired up to this module.
1104 depMap = makeModuleMap(depMap,
1105 (this.map.isDefine ? this.map : this.map.parentMap),
1106 false,
1107 !this.skipMap);
1108 this.depMaps[i] = depMap;
1109
1110 handler = getOwn(handlers, depMap.id);
1111
1112 if (handler) {
1113 this.depExports[i] = handler(this);
1114 return;
1115 }
1116
1117 this.depCount += 1;
1118
1119 on(depMap, 'defined', bind(this, function (depExports) {
1120 this.defineDep(i, depExports);
1121 this.check();
1122 }));
1123
1124 if (this.errback) {
1125 on(depMap, 'error', bind(this, this.errback));
1126 }
1127 }
1128
1129 id = depMap.id;
1130 mod = registry[id];
1131
1132 //Skip special modules like 'require', 'exports', 'module'
1133 //Also, don't call enable if it is already enabled,
1134 //important in circular dependency cases.
1135 if (!hasProp(handlers, id) && mod && !mod.enabled) {
1136 context.enable(depMap, this);
1137 }
1138 }));
1139
1140 //Enable each plugin that is used in
1141 //a dependency
1142 eachProp(this.pluginMaps, bind(this, function (pluginMap) {
1143 var mod = getOwn(registry, pluginMap.id);
1144 if (mod && !mod.enabled) {
1145 context.enable(pluginMap, this);
1146 }
1147 }));
1148
1149 this.enabling = false;
1150
1151 this.check();
1152 },
1153
1154 on: function (name, cb) {
1155 var cbs = this.events[name];
1156 if (!cbs) {
1157 cbs = this.events[name] = [];
1158 }
1159 cbs.push(cb);
1160 },
1161
1162 emit: function (name, evt) {
1163 each(this.events[name], function (cb) {
1164 cb(evt);
1165 });
1166 if (name === 'error') {
1167 //Now that the error handler was triggered, remove
1168 //the listeners, since this broken Module instance
1169 //can stay around for a while in the registry.
1170 delete this.events[name];
1171 }
1172 }
1173 };
1174
1175 function callGetModule(args) {
1176 //Skip modules already defined.
1177 if (!hasProp(defined, args[0])) {
1178 getModule(makeModuleMap(args[0], null, true)).init(args[1], args[2]);
1179 }
1180 }
1181
1182 function removeListener(node, func, name, ieName) {
1183 //Favor detachEvent because of IE9
1184 //issue, see attachEvent/addEventListener comment elsewhere
1185 //in this file.
1186 if (node.detachEvent && !isOpera) {
1187 //Probably IE. If not it will throw an error, which will be
1188 //useful to know.
1189 if (ieName) {
1190 node.detachEvent(ieName, func);
1191 }
1192 } else {
1193 node.removeEventListener(name, func, false);
1194 }
1195 }
1196
1197 /**
1198 * Given an event from a script node, get the requirejs info from it,
1199 * and then removes the event listeners on the node.
1200 * @param {Event} evt
1201 * @returns {Object}
1202 */
1203 function getScriptData(evt) {
1204 //Using currentTarget instead of target for Firefox 2.0's sake. Not
1205 //all old browsers will be supported, but this one was easy enough
1206 //to support and still makes sense.
1207 var node = evt.currentTarget || evt.srcElement;
1208
1209 //Remove the listeners once here.
1210 removeListener(node, context.onScriptLoad, 'load', 'onreadystatechange');
1211 removeListener(node, context.onScriptError, 'error');
1212
1213 return {
1214 node: node,
1215 id: node && node.getAttribute('data-requiremodule')
1216 };
1217 }
1218
1219 function intakeDefines() {
1220 var args;
1221
1222 //Any defined modules in the global queue, intake them now.
1223 takeGlobalQueue();
1224
1225 //Make sure any remaining defQueue items get properly processed.
1226 while (defQueue.length) {
1227 args = defQueue.shift();
1228 if (args[0] === null) {
1229 return onError(makeError('mismatch', 'Mismatched anonymous define() module: ' + args[args.length - 1]));
1230 } else {
1231 //args are id, deps, factory. Should be normalized by the
1232 //define() function.
1233 callGetModule(args);
1234 }
1235 }
1236 }
1237
1238 context = {
1239 config: config,
1240 contextName: contextName,
1241 registry: registry,
1242 defined: defined,
1243 urlFetched: urlFetched,
1244 defQueue: defQueue,
1245 Module: Module,
1246 makeModuleMap: makeModuleMap,
1247 nextTick: req.nextTick,
1248 onError: onError,
1249
1250 /**
1251 * Set a configuration for the context.
1252 * @param {Object} cfg config object to integrate.
1253 */
1254 configure: function (cfg) {
1255 //Make sure the baseUrl ends in a slash.
1256 if (cfg.baseUrl) {
1257 if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== '/') {
1258 cfg.baseUrl += '/';
1259 }
1260 }
1261
1262 //Save off the paths since they require special processing,
1263 //they are additive.
1264 var shim = config.shim,
1265 objs = {
1266 paths: true,
1267 bundles: true,
1268 config: true,
1269 map: true
1270 };
1271
1272 eachProp(cfg, function (value, prop) {
1273 if (objs[prop]) {
1274 if (!config[prop]) {
1275 config[prop] = {};
1276 }
1277 mixin(config[prop], value, true, true);
1278 } else {
1279 config[prop] = value;
1280 }
1281 });
1282
1283 //Reverse map the bundles
1284 if (cfg.bundles) {
1285 eachProp(cfg.bundles, function (value, prop) {
1286 each(value, function (v) {
1287 if (v !== prop) {
1288 bundlesMap[v] = prop;
1289 }
1290 });
1291 });
1292 }
1293
1294 //Merge shim
1295 if (cfg.shim) {
1296 eachProp(cfg.shim, function (value, id) {
1297 //Normalize the structure
1298 if (isArray(value)) {
1299 value = {
1300 deps: value
1301 };
1302 }
1303 if ((value.exports || value.init) && !value.exportsFn) {
1304 value.exportsFn = context.makeShimExports(value);
1305 }
1306 shim[id] = value;
1307 });
1308 config.shim = shim;
1309 }
1310
1311 //Adjust packages if necessary.
1312 if (cfg.packages) {
1313 each(cfg.packages, function (pkgObj) {
1314 var location, name;
1315
1316 pkgObj = typeof pkgObj === 'string' ? { name: pkgObj } : pkgObj;
1317
1318 name = pkgObj.name;
1319 location = pkgObj.location;
1320 if (location) {
1321 config.paths[name] = pkgObj.location;
1322 }
1323
1324 //Save pointer to main module ID for pkg name.
1325 //Remove leading dot in main, so main paths are normalized,
1326 //and remove any trailing .js, since different package
1327 //envs have different conventions: some use a module name,
1328 //some use a file name.
1329 config.pkgs[name] = pkgObj.name + '/' + (pkgObj.main || 'main')
1330 .replace(currDirRegExp, '')
1331 .replace(jsSuffixRegExp, '');
1332 });
1333 }
1334
1335 //If there are any "waiting to execute" modules in the registry,
1336 //update the maps for them, since their info, like URLs to load,
1337 //may have changed.
1338 eachProp(registry, function (mod, id) {
1339 //If module already has init called, since it is too
1340 //late to modify them, and ignore unnormalized ones
1341 //since they are transient.
1342 if (!mod.inited && !mod.map.unnormalized) {
1343 mod.map = makeModuleMap(id);
1344 }
1345 });
1346
1347 //If a deps array or a config callback is specified, then call
1348 //require with those args. This is useful when require is defined as a
1349 //config object before require.js is loaded.
1350 if (cfg.deps || cfg.callback) {
1351 context.require(cfg.deps || [], cfg.callback);
1352 }
1353 },
1354
1355 makeShimExports: function (value) {
1356 function fn() {
1357 var ret;
1358 if (value.init) {
1359 ret = value.init.apply(global, arguments);
1360 }
1361 return ret || (value.exports && getGlobal(value.exports));
1362 }
1363 return fn;
1364 },
1365
1366 makeRequire: function (relMap, options) {
1367 options = options || {};
1368
1369 function localRequire(deps, callback, errback) {
1370 var id, map, requireMod;
1371
1372 if (options.enableBuildCallback && callback && isFunction(callback)) {
1373 callback.__requireJsBuild = true;
1374 }
1375
1376 if (typeof deps === 'string') {
1377 if (isFunction(callback)) {
1378 //Invalid call
1379 return onError(makeError('requireargs', 'Invalid require call'), errback);
1380 }
1381
1382 //If require|exports|module are requested, get the
1383 //value for them from the special handlers. Caveat:
1384 //this only works while module is being defined.
1385 if (relMap && hasProp(handlers, deps)) {
1386 return handlers[deps](registry[relMap.id]);
1387 }
1388
1389 //Synchronous access to one module. If require.get is
1390 //available (as in the Node adapter), prefer that.
1391 if (req.get) {
1392 return req.get(context, deps, relMap, localRequire);
1393 }
1394
1395 //Normalize module name, if it contains . or ..
1396 map = makeModuleMap(deps, relMap, false, true);
1397 id = map.id;
1398
1399 if (!hasProp(defined, id)) {
1400 return onError(makeError('notloaded', 'Module name "' +
1401 id +
1402 '" has not been loaded yet for context: ' +
1403 contextName +
1404 (relMap ? '' : '. Use require([])')));
1405 }
1406 return defined[id];
1407 }
1408
1409 //Grab defines waiting in the global queue.
1410 intakeDefines();
1411
1412 //Mark all the dependencies as needing to be loaded.
1413 context.nextTick(function () {
1414 //Some defines could have been added since the
1415 //require call, collect them.
1416 intakeDefines();
1417
1418 requireMod = getModule(makeModuleMap(null, relMap));
1419
1420 //Store if map config should be applied to this require
1421 //call for dependencies.
1422 requireMod.skipMap = options.skipMap;
1423
1424 requireMod.init(deps, callback, errback, {
1425 enabled: true
1426 });
1427
1428 checkLoaded();
1429 });
1430
1431 return localRequire;
1432 }
1433
1434 mixin(localRequire, {
1435 isBrowser: isBrowser,
1436
1437 /**
1438 * Converts a module name + .extension into an URL path.
1439 * *Requires* the use of a module name. It does not support using
1440 * plain URLs like nameToUrl.
1441 */
1442 toUrl: function (moduleNamePlusExt) {
1443 var ext,
1444 index = moduleNamePlusExt.lastIndexOf('.'),
1445 segment = moduleNamePlusExt.split('/')[0],
1446 isRelative = segment === '.' || segment === '..';
1447
1448 //Have a file extension alias, and it is not the
1449 //dots from a relative path.
1450 if (index !== -1 && (!isRelative || index > 1)) {
1451 ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length);
1452 moduleNamePlusExt = moduleNamePlusExt.substring(0, index);
1453 }
1454
1455 return context.nameToUrl(normalize(moduleNamePlusExt,
1456 relMap && relMap.id, true), ext, true);
1457 },
1458
1459 defined: function (id) {
1460 return hasProp(defined, makeModuleMap(id, relMap, false, true).id);
1461 },
1462
1463 specified: function (id) {
1464 id = makeModuleMap(id, relMap, false, true).id;
1465 return hasProp(defined, id) || hasProp(registry, id);
1466 }
1467 });
1468
1469 //Only allow undef on top level require calls
1470 if (!relMap) {
1471 localRequire.undef = function (id) {
1472 //Bind any waiting define() calls to this context,
1473 //fix for #408
1474 takeGlobalQueue();
1475
1476 var map = makeModuleMap(id, relMap, true),
1477 mod = getOwn(registry, id);
1478
1479 removeScript(id);
1480
1481 delete defined[id];
1482 delete urlFetched[map.url];
1483 delete undefEvents[id];
1484
1485 //Clean queued defines too. Go backwards
1486 //in array so that the splices do not
1487 //mess up the iteration.
1488 eachReverse(defQueue, function(args, i) {
1489 if(args[0] === id) {
1490 defQueue.splice(i, 1);
1491 }
1492 });
1493
1494 if (mod) {
1495 //Hold on to listeners in case the
1496 //module will be attempted to be reloaded
1497 //using a different config.
1498 if (mod.events.defined) {
1499 undefEvents[id] = mod.events;
1500 }
1501
1502 cleanRegistry(id);
1503 }
1504 };
1505 }
1506
1507 return localRequire;
1508 },
1509
1510 /**
1511 * Called to enable a module if it is still in the registry
1512 * awaiting enablement. A second arg, parent, the parent module,
1513 * is passed in for context, when this method is overridden by
1514 * the optimizer. Not shown here to keep code compact.
1515 */
1516 enable: function (depMap) {
1517 var mod = getOwn(registry, depMap.id);
1518 if (mod) {
1519 getModule(depMap).enable();
1520 }
1521 },
1522
1523 /**
1524 * Internal method used by environment adapters to complete a load event.
1525 * A load event could be a script load or just a load pass from a synchronous
1526 * load call.
1527 * @param {String} moduleName the name of the module to potentially complete.
1528 */
1529 completeLoad: function (moduleName) {
1530 var found, args, mod,
1531 shim = getOwn(config.shim, moduleName) || {},
1532 shExports = shim.exports;
1533
1534 takeGlobalQueue();
1535
1536 while (defQueue.length) {
1537 args = defQueue.shift();
1538 if (args[0] === null) {
1539 args[0] = moduleName;
1540 //If already found an anonymous module and bound it
1541 //to this name, then this is some other anon module
1542 //waiting for its completeLoad to fire.
1543 if (found) {
1544 break;
1545 }
1546 found = true;
1547 } else if (args[0] === moduleName) {
1548 //Found matching define call for this script!
1549 found = true;
1550 }
1551
1552 callGetModule(args);
1553 }
1554
1555 //Do this after the cycle of callGetModule in case the result
1556 //of those calls/init calls changes the registry.
1557 mod = getOwn(registry, moduleName);
1558
1559 if (!found && !hasProp(defined, moduleName) && mod && !mod.inited) {
1560 if (config.enforceDefine && (!shExports || !getGlobal(shExports))) {
1561 if (hasPathFallback(moduleName)) {
1562 return;
1563 } else {
1564 return onError(makeError('nodefine',
1565 'No define call for ' + moduleName,
1566 null,
1567 [moduleName]));
1568 }
1569 } else {
1570 //A script that does not call define(), so just simulate
1571 //the call for it.
1572 callGetModule([moduleName, (shim.deps || []), shim.exportsFn]);
1573 }
1574 }
1575
1576 checkLoaded();
1577 },
1578
1579 /**
1580 * Converts a module name to a file path. Supports cases where
1581 * moduleName may actually be just an URL.
1582 * Note that it **does not** call normalize on the moduleName,
1583 * it is assumed to have already been normalized. This is an
1584 * internal API, not a public one. Use toUrl for the public API.
1585 */
1586 nameToUrl: function (moduleName, ext, skipExt) {
1587 var paths, syms, i, parentModule, url,
1588 parentPath, bundleId,
1589 pkgMain = getOwn(config.pkgs, moduleName);
1590
1591 if (pkgMain) {
1592 moduleName = pkgMain;
1593 }
1594
1595 bundleId = getOwn(bundlesMap, moduleName);
1596
1597 if (bundleId) {
1598 return context.nameToUrl(bundleId, ext, skipExt);
1599 }
1600
1601 //If a colon is in the URL, it indicates a protocol is used and it is just
1602 //an URL to a file, or if it starts with a slash, contains a query arg (i.e. ?)
1603 //or ends with .js, then assume the user meant to use an url and not a module id.
1604 //The slash is important for protocol-less URLs as well as full paths.
1605 if (req.jsExtRegExp.test(moduleName)) {
1606 //Just a plain path, not module name lookup, so just return it.
1607 //Add extension if it is included. This is a bit wonky, only non-.js things pass
1608 //an extension, this method probably needs to be reworked.
1609 url = moduleName + (ext || '');
1610 } else {
1611 //A module that needs to be converted to a path.
1612 paths = config.paths;
1613
1614 syms = moduleName.split('/');
1615 //For each module name segment, see if there is a path
1616 //registered for it. Start with most specific name
1617 //and work up from it.
1618 for (i = syms.length; i > 0; i -= 1) {
1619 parentModule = syms.slice(0, i).join('/');
1620
1621 parentPath = getOwn(paths, parentModule);
1622 if (parentPath) {
1623 //If an array, it means there are a few choices,
1624 //Choose the one that is desired
1625 if (isArray(parentPath)) {
1626 parentPath = parentPath[0];
1627 }
1628 syms.splice(0, i, parentPath);
1629 break;
1630 }
1631 }
1632
1633 //Join the path parts together, then figure out if baseUrl is needed.
1634 url = syms.join('/');
1635 url += (ext || (/^data\:|\?/.test(url) || skipExt ? '' : '.js'));
1636 url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url;
1637 }
1638
1639 return config.urlArgs ? url +
1640 ((url.indexOf('?') === -1 ? '?' : '&') +
1641 config.urlArgs) : url;
1642 },
1643
1644 //Delegates to req.load. Broken out as a separate function to
1645 //allow overriding in the optimizer.
1646 load: function (id, url) {
1647 req.load(context, id, url);
1648 },
1649
1650 /**
1651 * Executes a module callback function. Broken out as a separate function
1652 * solely to allow the build system to sequence the files in the built
1653 * layer in the right sequence.
1654 *
1655 * @private
1656 */
1657 execCb: function (name, callback, args, exports) {
1658 return callback.apply(exports, args);
1659 },
1660
1661 /**
1662 * callback for script loads, used to check status of loading.
1663 *
1664 * @param {Event} evt the event from the browser for the script
1665 * that was loaded.
1666 */
1667 onScriptLoad: function (evt) {
1668 //Using currentTarget instead of target for Firefox 2.0's sake. Not
1669 //all old browsers will be supported, but this one was easy enough
1670 //to support and still makes sense.
1671 if (evt.type === 'load' ||
1672 (readyRegExp.test((evt.currentTarget || evt.srcElement).readyState))) {
1673 //Reset interactive script so a script node is not held onto for
1674 //to long.
1675 interactiveScript = null;
1676
1677 //Pull out the name of the module and the context.
1678 var data = getScriptData(evt);
1679 context.completeLoad(data.id);
1680 }
1681 },
1682
1683 /**
1684 * Callback for script errors.
1685 */
1686 onScriptError: function (evt) {
1687 var data = getScriptData(evt);
1688 if (!hasPathFallback(data.id)) {
1689 return onError(makeError('scripterror', 'Script error for: ' + data.id, evt, [data.id]));
1690 }
1691 }
1692 };
1693
1694 context.require = context.makeRequire();
1695 return context;
1696 }
1697
1698 /**
1699 * Main entry point.
1700 *
1701 * If the only argument to require is a string, then the module that
1702 * is represented by that string is fetched for the appropriate context.
1703 *
1704 * If the first argument is an array, then it will be treated as an array
1705 * of dependency string names to fetch. An optional function callback can
1706 * be specified to execute when all of those dependencies are available.
1707 *
1708 * Make a local req variable to help Caja compliance (it assumes things
1709 * on a require that are not standardized), and to give a short
1710 * name for minification/local scope use.
1711 */
1712 req = requirejs = function (deps, callback, errback, optional) {
1713
1714 //Find the right context, use default
1715 var context, config,
1716 contextName = defContextName;
1717
1718 // Determine if have config object in the call.
1719 if (!isArray(deps) && typeof deps !== 'string') {
1720 // deps is a config object
1721 config = deps;
1722 if (isArray(callback)) {
1723 // Adjust args if there are dependencies
1724 deps = callback;
1725 callback = errback;
1726 errback = optional;
1727 } else {
1728 deps = [];
1729 }
1730 }
1731
1732 if (config && config.context) {
1733 contextName = config.context;
1734 }
1735
1736 context = getOwn(contexts, contextName);
1737 if (!context) {
1738 context = contexts[contextName] = req.s.newContext(contextName);
1739 }
1740
1741 if (config) {
1742 context.configure(config);
1743 }
1744
1745 return context.require(deps, callback, errback);
1746 };
1747
1748 /**
1749 * Support require.config() to make it easier to cooperate with other
1750 * AMD loaders on globally agreed names.
1751 */
1752 req.config = function (config) {
1753 return req(config);
1754 };
1755
1756 /**
1757 * Execute something after the current tick
1758 * of the event loop. Override for other envs
1759 * that have a better solution than setTimeout.
1760 * @param {Function} fn function to execute later.
1761 */
1762 req.nextTick = typeof setTimeout !== 'undefined' ? function (fn) {
1763 setTimeout(fn, 4);
1764 } : function (fn) { fn(); };
1765
1766 /**
1767 * Export require as a global, but only if it does not already exist.
1768 */
1769 if (!require) {
1770 require = req;
1771 }
1772
1773 req.version = version;
1774
1775 //Used to filter out dependencies that are already paths.
1776 req.jsExtRegExp = /^\/|:|\?|\.js$/;
1777 req.isBrowser = isBrowser;
1778 s = req.s = {
1779 contexts: contexts,
1780 newContext: newContext
1781 };
1782
1783 //Create default context.
1784 req({});
1785
1786 //Exports some context-sensitive methods on global require.
1787 each([
1788 'toUrl',
1789 'undef',
1790 'defined',
1791 'specified'
1792 ], function (prop) {
1793 //Reference from contexts instead of early binding to default context,
1794 //so that during builds, the latest instance of the default context
1795 //with its config gets used.
1796 req[prop] = function () {
1797 var ctx = contexts[defContextName];
1798 return ctx.require[prop].apply(ctx, arguments);
1799 };
1800 });
1801
1802 if (isBrowser) {
1803 head = s.head = document.getElementsByTagName('head')[0];
1804 //If BASE tag is in play, using appendChild is a problem for IE6.
1805 //When that browser dies, this can be removed. Details in this jQuery bug:
1806 //http://dev.jquery.com/ticket/2709
1807 baseElement = document.getElementsByTagName('base')[0];
1808 if (baseElement) {
1809 head = s.head = baseElement.parentNode;
1810 }
1811 }
1812
1813 /**
1814 * Any errors that require explicitly generates will be passed to this
1815 * function. Intercept/override it if you want custom error handling.
1816 * @param {Error} err the error object.
1817 */
1818 req.onError = defaultOnError;
1819
1820 /**
1821 * Creates the node for the load command. Only used in browser envs.
1822 */
1823 req.createNode = function (config, moduleName, url) {
1824 var node = config.xhtml ?
1825 document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') :
1826 document.createElement('script');
1827 node.type = config.scriptType || 'text/javascript';
1828 node.charset = 'utf-8';
1829 node.async = true;
1830 return node;
1831 };
1832
1833 /**
1834 * Does the request to load a module for the browser case.
1835 * Make this a separate function to allow other environments
1836 * to override it.
1837 *
1838 * @param {Object} context the require context to find state.
1839 * @param {String} moduleName the name of the module.
1840 * @param {Object} url the URL to the module.
1841 */
1842 req.load = function (context, moduleName, url) {
1843 var config = (context && context.config) || {},
1844 node;
1845 if (isBrowser) {
1846 //In the browser so use a script tag
1847 node = req.createNode(config, moduleName, url);
1848
1849 node.setAttribute('data-requirecontext', context.contextName);
1850 node.setAttribute('data-requiremodule', moduleName);
1851
1852 //Set up load listener. Test attachEvent first because IE9 has
1853 //a subtle issue in its addEventListener and script onload firings
1854 //that do not match the behavior of all other browsers with
1855 //addEventListener support, which fire the onload event for a
1856 //script right after the script execution. See:
1857 //https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution
1858 //UNFORTUNATELY Opera implements attachEvent but does not follow the script
1859 //script execution mode.
1860 if (node.attachEvent &&
1861 //Check if node.attachEvent is artificially added by custom script or
1862 //natively supported by browser
1863 //read https://github.com/jrburke/requirejs/issues/187
1864 //if we can NOT find [native code] then it must NOT natively supported.
1865 //in IE8, node.attachEvent does not have toString()
1866 //Note the test for "[native code" with no closing brace, see:
1867 //https://github.com/jrburke/requirejs/issues/273
1868 !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) &&
1869 !isOpera) {
1870 //Probably IE. IE (at least 6-8) do not fire
1871 //script onload right after executing the script, so
1872 //we cannot tie the anonymous define call to a name.
1873 //However, IE reports the script as being in 'interactive'
1874 //readyState at the time of the define call.
1875 useInteractive = true;
1876
1877 node.attachEvent('onreadystatechange', context.onScriptLoad);
1878 //It would be great to add an error handler here to catch
1879 //404s in IE9+. However, onreadystatechange will fire before
1880 //the error handler, so that does not help. If addEventListener
1881 //is used, then IE will fire error before load, but we cannot
1882 //use that pathway given the connect.microsoft.com issue
1883 //mentioned above about not doing the 'script execute,
1884 //then fire the script load event listener before execute
1885 //next script' that other browsers do.
1886 //Best hope: IE10 fixes the issues,
1887 //and then destroys all installs of IE 6-9.
1888 //node.attachEvent('onerror', context.onScriptError);
1889 } else {
1890 node.addEventListener('load', context.onScriptLoad, false);
1891 node.addEventListener('error', context.onScriptError, false);
1892 }
1893 node.src = url;
1894
1895 //For some cache cases in IE 6-8, the script executes before the end
1896 //of the appendChild execution, so to tie an anonymous define
1897 //call to the module name (which is stored on the node), hold on
1898 //to a reference to this node, but clear after the DOM insertion.
1899 currentlyAddingScript = node;
1900 if (baseElement) {
1901 head.insertBefore(node, baseElement);
1902 } else {
1903 head.appendChild(node);
1904 }
1905 currentlyAddingScript = null;
1906
1907 return node;
1908 } else if (isWebWorker) {
1909 try {
1910 //In a web worker, use importScripts. This is not a very
1911 //efficient use of importScripts, importScripts will block until
1912 //its script is downloaded and evaluated. However, if web workers
1913 //are in play, the expectation that a build has been done so that
1914 //only one script needs to be loaded anyway. This may need to be
1915 //reevaluated if other use cases become common.
1916 importScripts(url);
1917
1918 //Account for anonymous modules
1919 context.completeLoad(moduleName);
1920 } catch (e) {
1921 context.onError(makeError('importscripts',
1922 'importScripts failed for ' +
1923 moduleName + ' at ' + url,
1924 e,
1925 [moduleName]));
1926 }
1927 }
1928 };
1929
1930 function getInteractiveScript() {
1931 if (interactiveScript && interactiveScript.readyState === 'interactive') {
1932 return interactiveScript;
1933 }
1934
1935 eachReverse(scripts(), function (script) {
1936 if (script.readyState === 'interactive') {
1937 return (interactiveScript = script);
1938 }
1939 });
1940 return interactiveScript;
1941 }
1942
1943 //Look for a data-main script attribute, which could also adjust the baseUrl.
1944 if (isBrowser && !cfg.skipDataMain) {
1945 //Figure out baseUrl. Get it from the script tag with require.js in it.
1946 eachReverse(scripts(), function (script) {
1947 //Set the 'head' where we can append children by
1948 //using the script's parent.
1949 if (!head) {
1950 head = script.parentNode;
1951 }
1952
1953 //Look for a data-main attribute to set main script for the page
1954 //to load. If it is there, the path to data main becomes the
1955 //baseUrl, if it is not already set.
1956 dataMain = script.getAttribute('data-main');
1957 if (dataMain) {
1958 //Preserve dataMain in case it is a path (i.e. contains '?')
1959 mainScript = dataMain;
1960
1961 //Set final baseUrl if there is not already an explicit one.
1962 if (!cfg.baseUrl) {
1963 //Pull off the directory of data-main for use as the
1964 //baseUrl.
1965 src = mainScript.split('/');
1966 mainScript = src.pop();
1967 subPath = src.length ? src.join('/') + '/' : './';
1968
1969 cfg.baseUrl = subPath;
1970 }
1971
1972 //Strip off any trailing .js since mainScript is now
1973 //like a module name.
1974 mainScript = mainScript.replace(jsSuffixRegExp, '');
1975
1976 //If mainScript is still a path, fall back to dataMain
1977 if (req.jsExtRegExp.test(mainScript)) {
1978 mainScript = dataMain;
1979 }
1980
1981 //Put the data-main script in the files to load.
1982 cfg.deps = cfg.deps ? cfg.deps.concat(mainScript) : [mainScript];
1983
1984 return true;
1985 }
1986 });
1987 }
1988
1989 /**
1990 * The function that handles definitions of modules. Differs from
1991 * require() in that a string for the module should be the first argument,
1992 * and the function to execute after dependencies are loaded should
1993 * return a value to define the module corresponding to the first argument's
1994 * name.
1995 */
1996 define = function (name, deps, callback) {
1997 var node, context;
1998
1999 //Allow for anonymous modules
2000 if (typeof name !== 'string') {
2001 //Adjust args appropriately
2002 callback = deps;
2003 deps = name;
2004 name = null;
2005 }
2006
2007 //This module may not have dependencies
2008 if (!isArray(deps)) {
2009 callback = deps;
2010 deps = null;
2011 }
2012
2013 //If no name, and callback is a function, then figure out if it a
2014 //CommonJS thing with dependencies.
2015 if (!deps && isFunction(callback)) {
2016 deps = [];
2017 //Remove comments from the callback string,
2018 //look for require calls, and pull them into the dependencies,
2019 //but only if there are function args.
2020 if (callback.length) {
2021 callback
2022 .toString()
2023 .replace(commentRegExp, '')
2024 .replace(cjsRequireRegExp, function (match, dep) {
2025 deps.push(dep);
2026 });
2027
2028 //May be a CommonJS thing even without require calls, but still
2029 //could use exports, and module. Avoid doing exports and module
2030 //work though if it just needs require.
2031 //REQUIRES the function to expect the CommonJS variables in the
2032 //order listed below.
2033 deps = (callback.length === 1 ? ['require'] : ['require', 'exports', 'module']).concat(deps);
2034 }
2035 }
2036
2037 //If in IE 6-8 and hit an anonymous define() call, do the interactive
2038 //work.
2039 if (useInteractive) {
2040 node = currentlyAddingScript || getInteractiveScript();
2041 if (node) {
2042 if (!name) {
2043 name = node.getAttribute('data-requiremodule');
2044 }
2045 context = contexts[node.getAttribute('data-requirecontext')];
2046 }
2047 }
2048
2049 //Always save off evaluating the def call until the script onload handler.
2050 //This allows multiple modules to be in a file without prematurely
2051 //tracing dependencies, and allows for anonymous module support,
2052 //where the module name is not known until the script onload event
2053 //occurs. If no context, use the global queue, and get it processed
2054 //in the onscript load callback.
2055 (context ? context.defQueue : globalDefQueue).push([name, deps, callback]);
2056 };
2057
2058 define.amd = {
2059 jQuery: true
2060 };
2061
2062
2063 /**
2064 * Executes the text. Normally just uses eval, but can be modified
2065 * to use a better, environment-specific call. Only used for transpiling
2066 * loader plugins, not for plain JS modules.
2067 * @param {String} text the text to execute/evaluate.
2068 */
2069 req.exec = function (text) {
2070 /*jslint evil: true */
2071 return eval(text);
2072 };
2073
2074 //Set up with config info.
2075 req(cfg);
2076}(this));