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engine/vendor/assets/javascripts/locomotive/aloha/lib/require.js

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first draft of the new inline editing toolbar
2012-01-16 22:59:59 +00:00
/** vim: et:ts=4:sw=4:sts=4
* @license RequireJS 0.26.0+ Copyright (c) 2010-2011, The Dojo Foundation All Rights Reserved.
* Available via the MIT or new BSD license.
* see: http://github.com/jrburke/requirejs for details
*/
/*jslint strict: false, plusplus: false */
/*global window: false, navigator: false, document: false, importScripts: false,
jQuery: false, clearInterval: false, setInterval: false, self: false,
setTimeout: false, opera: false */
var requirejs, require, define;
(function () {
//Change this version number for each release.
var version = "0.26.0+",
commentRegExp = /(\/\*([\s\S]*?)\*\/|\/\/(.*)$)/mg,
cjsRequireRegExp = /require\(\s*["']([^'"\s]+)["']\s*\)/g,
currDirRegExp = /^\.\//,
jsSuffixRegExp = /\.js$/,
ostring = Object.prototype.toString,
ap = Array.prototype,
aps = ap.slice,
apsp = ap.splice,
isBrowser = !!(typeof window !== "undefined" && navigator && document),
isWebWorker = !isBrowser && typeof importScripts !== "undefined",
//PS3 indicates loaded and complete, but need to wait for complete
//specifically. Sequence is "loading", "loaded", execution,
// then "complete". The UA check is unfortunate, but not sure how
//to feature test w/o causing perf issues.
readyRegExp = isBrowser && navigator.platform === 'PLAYSTATION 3' ?
/^complete$/ : /^(complete|loaded)$/,
defContextName = "_",
//Oh the tragedy, detecting opera. See the usage of isOpera for reason.
isOpera = typeof opera !== "undefined" && opera.toString() === "[object Opera]",
reqWaitIdPrefix = "_r@@",
empty = {},
contexts = {},
globalDefQueue = [],
interactiveScript = null,
isDone = false,
checkLoadedDepth = 0,
useInteractive = false,
req, cfg = {}, currentlyAddingScript, s, head, baseElement, scripts, script,
src, subPath, mainScript, dataMain, i, scrollIntervalId, setReadyState, ctx,
jQueryCheck, checkLoadedTimeoutId;
function isFunction(it) {
return ostring.call(it) === "[object Function]";
}
function isArray(it) {
return ostring.call(it) === "[object Array]";
}
/**
* Simple function to mix in properties from source into target,
* but only if target does not already have a property of the same name.
* This is not robust in IE for transferring methods that match
* Object.prototype names, but the uses of mixin here seem unlikely to
* trigger a problem related to that.
*/
function mixin(target, source, force) {
for (var prop in source) {
if (!(prop in empty) && (!(prop in target) || force)) {
target[prop] = source[prop];
}
}
return req;
}
/**
* Constructs an error with a pointer to an URL with more information.
* @param {String} id the error ID that maps to an ID on a web page.
* @param {String} message human readable error.
* @param {Error} [err] the original error, if there is one.
*
* @returns {Error}
*/
function makeError(id, msg, err) {
var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id);
if (err) {
e.originalError = err;
}
return e;
}
/**
* Used to set up package paths from a packagePaths or packages config object.
* @param {Object} pkgs the object to store the new package config
* @param {Array} currentPackages an array of packages to configure
* @param {String} [dir] a prefix dir to use.
*/
function configurePackageDir(pkgs, currentPackages, dir) {
var i, location, pkgObj;
for (i = 0; (pkgObj = currentPackages[i]); i++) {
pkgObj = typeof pkgObj === "string" ? { name: pkgObj } : pkgObj;
location = pkgObj.location;
//Add dir to the path, but avoid paths that start with a slash
//or have a colon (indicates a protocol)
if (dir && (!location || (location.indexOf("/") !== 0 && location.indexOf(":") === -1))) {
location = dir + "/" + (location || pkgObj.name);
}
//Create a brand new object on pkgs, since currentPackages can
//be passed in again, and config.pkgs is the internal transformed
//state for all package configs.
pkgs[pkgObj.name] = {
name: pkgObj.name,
location: location || pkgObj.name,
//Remove leading dot in main, so main paths are normalized,
//and remove any trailing .js, since different package
//envs have different conventions: some use a module name,
//some use a file name.
main: (pkgObj.main || "main")
.replace(currDirRegExp, '')
.replace(jsSuffixRegExp, '')
};
}
}
/**
* jQuery 1.4.3-1.5.x use a readyWait/ready() pairing to hold DOM
* ready callbacks, but jQuery 1.6 supports a holdReady() API instead.
* At some point remove the readyWait/ready() support and just stick
* with using holdReady.
*/
function jQueryHoldReady($, shouldHold) {
if ($.holdReady) {
$.holdReady(shouldHold);
} else if (shouldHold) {
$.readyWait += 1;
} else {
$.ready(true);
}
}
if (typeof define !== "undefined") {
//If a define is already in play via another AMD loader,
//do not overwrite.
return;
}
if (typeof requirejs !== "undefined") {
if (isFunction(requirejs)) {
//Do not overwrite and existing requirejs instance.
return;
} else {
cfg = requirejs;
requirejs = undefined;
}
}
//Allow for a require config object
if (typeof require !== "undefined" && !isFunction(require)) {
//assume it is a config object.
cfg = require;
require = undefined;
}
/**
* Creates a new context for use in require and define calls.
* Handle most of the heavy lifting. Do not want to use an object
* with prototype here to avoid using "this" in require, in case it
* needs to be used in more super secure envs that do not want this.
* Also there should not be that many contexts in the page. Usually just
* one for the default context, but could be extra for multiversion cases
* or if a package needs a special context for a dependency that conflicts
* with the standard context.
*/
function newContext(contextName) {
var context, resume,
config = {
waitSeconds: 7,
baseUrl: s.baseUrl || "./",
paths: {},
pkgs: {},
catchError: {}
},
defQueue = [],
specified = {
"require": true,
"exports": true,
"module": true
},
urlMap = {},
defined = {},
loaded = {},
waiting = {},
waitAry = [],
waitIdCounter = 0,
managerCallbacks = {},
plugins = {},
pluginsQueue = {},
resumeDepth = 0,
normalizedWaiting = {};
/**
* Trims the . and .. from an array of path segments.
* It will keep a leading path segment if a .. will become
* the first path segment, to help with module name lookups,
* which act like paths, but can be remapped. But the end result,
* all paths that use this function should look normalized.
* NOTE: this method MODIFIES the input array.
* @param {Array} ary the array of path segments.
*/
function trimDots(ary) {
var i, part;
for (i = 0; (part = ary[i]); i++) {
if (part === ".") {
ary.splice(i, 1);
i -= 1;
} else if (part === "..") {
if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
//End of the line. Keep at least one non-dot
//path segment at the front so it can be mapped
//correctly to disk. Otherwise, there is likely
//no path mapping for a path starting with '..'.
//This can still fail, but catches the most reasonable
//uses of ..
break;
} else if (i > 0) {
ary.splice(i - 1, 2);
i -= 2;
}
}
}
}
/**
* Given a relative module name, like ./something, normalize it to
* a real name that can be mapped to a path.
* @param {String} name the relative name
* @param {String} baseName a real name that the name arg is relative
* to.
* @returns {String} normalized name
*/
function normalize(name, baseName) {
var pkgName, pkgConfig;
//Adjust any relative paths.
if (name && name.charAt(0) === ".") {
//If have a base name, try to normalize against it,
//otherwise, assume it is a top-level require that will
//be relative to baseUrl in the end.
if (baseName) {
if (config.pkgs[baseName]) {
//If the baseName is a package name, then just treat it as one
//name to concat the name with.
baseName = [baseName];
} else {
//Convert baseName to array, and lop off the last part,
//so that . matches that "directory" and not name of the baseName's
//module. For instance, baseName of "one/two/three", maps to
//"one/two/three.js", but we want the directory, "one/two" for
//this normalization.
baseName = baseName.split("/");
baseName = baseName.slice(0, baseName.length - 1);
}
name = baseName.concat(name.split("/"));
trimDots(name);
//Some use of packages may use a . path to reference the
//"main" module name, so normalize for that.
pkgConfig = config.pkgs[(pkgName = name[0])];
name = name.join("/");
if (pkgConfig && name === pkgName + '/' + pkgConfig.main) {
name = pkgName;
}
}
}
return name;
}
/**
* Creates a module mapping that includes plugin prefix, module
* name, and path. If parentModuleMap is provided it will
* also normalize the name via require.normalize()
*
* @param {String} name the module name
* @param {String} [parentModuleMap] parent module map
* for the module name, used to resolve relative names.
*
* @returns {Object}
*/
function makeModuleMap(name, parentModuleMap) {
var index = name ? name.indexOf("!") : -1,
prefix = null,
parentName = parentModuleMap ? parentModuleMap.name : null,
originalName = name,
normalizedName, url, pluginModule;
if (index !== -1) {
prefix = name.substring(0, index);
name = name.substring(index + 1, name.length);
}
if (prefix) {
prefix = normalize(prefix, parentName);
}
//Account for relative paths if there is a base name.
if (name) {
if (prefix) {
pluginModule = defined[prefix];
if (pluginModule) {
//Plugin is loaded, use its normalize method, otherwise,
//normalize name as usual.
if (pluginModule.normalize) {
normalizedName = pluginModule.normalize(name, function (name) {
return normalize(name, parentName);
});
} else {
normalizedName = normalize(name, parentName);
}
} else {
//Plugin is not loaded yet, so do not normalize
//the name, wait for plugin to load to see if
//it has a normalize method. To avoid possible
//ambiguity with relative names loaded from another
//plugin, use the parent's name as part of this name.
normalizedName = '__$p' + parentName + '@' + (name || '');
}
} else {
normalizedName = normalize(name, parentName);
}
url = urlMap[normalizedName];
if (!url) {
//Calculate url for the module, if it has a name.
if (req.toModuleUrl) {
//Special logic required for a particular engine,
//like Node.
url = req.toModuleUrl(context, normalizedName, parentModuleMap);
} else {
url = context.nameToUrl(normalizedName, null, parentModuleMap);
}
//Store the URL mapping for later.
urlMap[normalizedName] = url;
}
}
return {
prefix: prefix,
name: normalizedName,
parentMap: parentModuleMap,
url: url,
originalName: originalName,
fullName: prefix ? prefix + "!" + (normalizedName || '') : normalizedName
};
}
/**
* Determine if priority loading is done. If so clear the priorityWait
*/
function isPriorityDone() {
var priorityDone = true,
priorityWait = config.priorityWait,
priorityName, i;
if (priorityWait) {
for (i = 0; (priorityName = priorityWait[i]); i++) {
if (!loaded[priorityName]) {
priorityDone = false;
break;
}
}
if (priorityDone) {
delete config.priorityWait;
}
}
return priorityDone;
}
/**
* Helper function that creates a setExports function for a "module"
* CommonJS dependency. Do this here to avoid creating a closure that
* is part of a loop.
*/
function makeSetExports(moduleObj) {
return function (exports) {
moduleObj.exports = exports;
};
}
function makeContextModuleFunc(func, relModuleMap, enableBuildCallback) {
return function () {
//A version of a require function that passes a moduleName
//value for items that may need to
//look up paths relative to the moduleName
var args = [].concat(aps.call(arguments, 0)), lastArg;
if (enableBuildCallback &&
isFunction((lastArg = args[args.length - 1]))) {
lastArg.__requireJsBuild = true;
}
args.push(relModuleMap);
return func.apply(null, args);
};
}
/**
* Helper function that creates a require function object to give to
* modules that ask for it as a dependency. It needs to be specific
* per module because of the implication of path mappings that may
* need to be relative to the module name.
*/
function makeRequire(relModuleMap, enableBuildCallback) {
var modRequire = makeContextModuleFunc(context.require, relModuleMap, enableBuildCallback);
mixin(modRequire, {
nameToUrl: makeContextModuleFunc(context.nameToUrl, relModuleMap),
toUrl: makeContextModuleFunc(context.toUrl, relModuleMap),
defined: makeContextModuleFunc(context.requireDefined, relModuleMap),
specified: makeContextModuleFunc(context.requireSpecified, relModuleMap),
ready: req.ready,
isBrowser: req.isBrowser
});
//Something used by node.
if (req.paths) {
modRequire.paths = req.paths;
}
return modRequire;
}
/**
* Used to update the normalized name for plugin-based dependencies
* after a plugin loads, since it can have its own normalization structure.
* @param {String} pluginName the normalized plugin module name.
*/
function updateNormalizedNames(pluginName) {
var oldFullName, oldModuleMap, moduleMap, fullName, callbacks,
i, j, k, depArray, existingCallbacks,
maps = normalizedWaiting[pluginName];
if (maps) {
for (i = 0; (oldModuleMap = maps[i]); i++) {
oldFullName = oldModuleMap.fullName;
moduleMap = makeModuleMap(oldModuleMap.originalName, oldModuleMap.parentMap);
fullName = moduleMap.fullName;
//Callbacks could be undefined if the same plugin!name was
//required twice in a row, so use empty array in that case.
callbacks = managerCallbacks[oldFullName] || [];
existingCallbacks = managerCallbacks[fullName];
if (fullName !== oldFullName) {
//Update the specified object, but only if it is already
//in there. In sync environments, it may not be yet.
if (oldFullName in specified) {
delete specified[oldFullName];
specified[fullName] = true;
}
//Update managerCallbacks to use the correct normalized name.
//If there are already callbacks for the normalized name,
//just add to them.
if (existingCallbacks) {
managerCallbacks[fullName] = existingCallbacks.concat(callbacks);
} else {
managerCallbacks[fullName] = callbacks;
}
delete managerCallbacks[oldFullName];
//In each manager callback, update the normalized name in the depArray.
for (j = 0; j < callbacks.length; j++) {
depArray = callbacks[j].depArray;
for (k = 0; k < depArray.length; k++) {
if (depArray[k] === oldFullName) {
depArray[k] = fullName;
}
}
}
}
}
}
delete normalizedWaiting[pluginName];
}
/*
* Queues a dependency for checking after the loader is out of a
* "paused" state, for example while a script file is being loaded
* in the browser, where it may have many modules defined in it.
*
* depName will be fully qualified, no relative . or .. path.
*/
function queueDependency(dep) {
//Make sure to load any plugin and associate the dependency
//with that plugin.
var prefix = dep.prefix,
fullName = dep.fullName;
//Do not bother if the depName is already in transit
if (specified[fullName] || fullName in defined) {
return;
}
if (prefix && !plugins[prefix]) {
//Queue up loading of the dependency, track it
//via context.plugins. Mark it as a plugin so
//that the build system will know to treat it
//special.
plugins[prefix] = undefined;
//Remember this dep that needs to have normaliztion done
//after the plugin loads.
(normalizedWaiting[prefix] || (normalizedWaiting[prefix] = []))
.push(dep);
//Register an action to do once the plugin loads, to update
//all managerCallbacks to use a properly normalized module
//name.
(managerCallbacks[prefix] ||
(managerCallbacks[prefix] = [])).push({
onDep: function (name, value) {
if (name === prefix) {
updateNormalizedNames(prefix);
}
}
});
queueDependency(makeModuleMap(prefix));
}
context.paused.push(dep);
}
function execManager(manager) {
var i, ret, waitingCallbacks, err, errFile, errModuleTree,
cb = manager.callback,
fullName = manager.fullName,
args = [],
ary = manager.depArray;
//Call the callback to define the module, if necessary.
if (cb && isFunction(cb)) {
//Pull out the defined dependencies and pass the ordered
//values to the callback.
if (ary) {
for (i = 0; i < ary.length; i++) {
args.push(manager.deps[ary[i]]);
}
}
if (config.catchError.define) {
try {
ret = req.execCb(fullName, manager.callback, args, defined[fullName]);
} catch (e) {
err = e;
}
} else {
ret = req.execCb(fullName, manager.callback, args, defined[fullName]);
}
if (fullName) {
//If setting exports via "module" is in play,
//favor that over return value and exports. After that,
//favor a non-undefined return value over exports use.
if (manager.cjsModule && manager.cjsModule.exports !== undefined) {
ret = defined[fullName] = manager.cjsModule.exports;
} else if (ret === undefined && manager.usingExports) {
//exports already set the defined value.
ret = defined[fullName];
} else {
//Use the return value from the function.
defined[fullName] = ret;
}
}
} else if (fullName) {
//May just be an object definition for the module. Only
//worry about defining if have a module name.
ret = defined[fullName] = cb;
}
//Clean up waiting. Do this before error calls, and before
//calling back waitingCallbacks, so that bookkeeping is correct
//in the event of an error and error is reported in correct order,
//since the waitingCallbacks will likely have errors if the
//onError function does not throw.
if (waiting[manager.waitId]) {
delete waiting[manager.waitId];
manager.isDone = true;
context.waitCount -= 1;
if (context.waitCount === 0) {
//Clear the wait array used for cycles.
waitAry = [];
}
}
if (err) {
errFile = (fullName ? makeModuleMap(fullName).url : '') ||
err.fileName || err.sourceURL;
errModuleTree = err.moduleTree;
err = makeError('defineerror', 'Error evaluating ' +
'module "' + fullName + '" at location "' +
errFile + '":\n' +
err + '\nfileName:' + errFile +
'\nlineNumber: ' + (err.lineNumber || err.line), err);
err.moduleName = fullName;
err.moduleTree = errModuleTree;
return req.onError(err);
}
if (fullName) {
//If anything was waiting for this module to be defined,
//notify them now.
waitingCallbacks = managerCallbacks[fullName];
if (waitingCallbacks) {
for (i = 0; i < waitingCallbacks.length; i++) {
waitingCallbacks[i].onDep(fullName, ret);
}
delete managerCallbacks[fullName];
}
}
return undefined;
}
function main(inName, depArray, callback, relModuleMap) {
var moduleMap = makeModuleMap(inName, relModuleMap),
name = moduleMap.name,
fullName = moduleMap.fullName,
uniques = {},
manager = {
//Use a wait ID because some entries are anon
//async require calls.
waitId: name || reqWaitIdPrefix + (waitIdCounter++),
depCount: 0,
depMax: 0,
prefix: moduleMap.prefix,
name: name,
fullName: fullName,
deps: {},
depArray: depArray,
callback: callback,
onDep: function (depName, value) {
if (!(depName in manager.deps)) {
manager.deps[depName] = value;
manager.depCount += 1;
if (manager.depCount === manager.depMax) {
//All done, execute!
execManager(manager);
}
}
}
},
i, depArg, depName, cjsMod;
if (fullName) {
//If module already defined for context, or already loaded,
//then leave. Also leave if jQuery is registering but it does
//not match the desired version number in the config.
if (fullName in defined || loaded[fullName] === true ||
(fullName === "jquery" && config.jQuery &&
config.jQuery !== callback().fn.jquery)) {
return;
}
//Set specified/loaded here for modules that are also loaded
//as part of a layer, where onScriptLoad is not fired
//for those cases. Do this after the inline define and
//dependency tracing is done.
specified[fullName] = true;
loaded[fullName] = true;
//If module is jQuery set up delaying its dom ready listeners.
if (fullName === "jquery" && callback) {
jQueryCheck(callback());
}
}
//Add the dependencies to the deps field, and register for callbacks
//on the dependencies.
for (i = 0; i < depArray.length; i++) {
depArg = depArray[i];
//There could be cases like in IE, where a trailing comma will
//introduce a null dependency, so only treat a real dependency
//value as a dependency.
if (depArg) {
//Split the dependency name into plugin and name parts
depArg = makeModuleMap(depArg, (name ? moduleMap : relModuleMap));
depName = depArg.fullName;
//Fix the name in depArray to be just the name, since
//that is how it will be called back later.
depArray[i] = depName;
//Fast path CommonJS standard dependencies.
if (depName === "require") {
manager.deps[depName] = makeRequire(moduleMap);
} else if (depName === "exports") {
//CommonJS module spec 1.1
manager.deps[depName] = defined[fullName] = {};
manager.usingExports = true;
} else if (depName === "module") {
//CommonJS module spec 1.1
manager.cjsModule = cjsMod = manager.deps[depName] = {
id: name,
uri: name ? context.nameToUrl(name, null, relModuleMap) : undefined,
exports: defined[fullName]
};
cjsMod.setExports = makeSetExports(cjsMod);
} else if (depName in defined && !(depName in waiting)) {
//Module already defined, no need to wait for it.
manager.deps[depName] = defined[depName];
} else if (!uniques[depName]) {
//A dynamic dependency.
manager.depMax += 1;
queueDependency(depArg);
//Register to get notification when dependency loads.
(managerCallbacks[depName] ||
(managerCallbacks[depName] = [])).push(manager);
uniques[depName] = true;
}
}
}
//Do not bother tracking the manager if it is all done.
if (manager.depCount === manager.depMax) {
//All done, execute!
execManager(manager);
} else {
waiting[manager.waitId] = manager;
waitAry.push(manager);
context.waitCount += 1;
}
}
/**
* Convenience method to call main for a define call that was put on
* hold in the defQueue.
*/
function callDefMain(args) {
main.apply(null, args);
//Mark the module loaded. Must do it here in addition
//to doing it in define in case a script does
//not call define
loaded[args[0]] = true;
}
/**
* jQuery 1.4.3+ supports ways to hold off calling
* calling jQuery ready callbacks until all scripts are loaded. Be sure
* to track it if the capability exists.. Also, since jQuery 1.4.3 does
* not register as a module, need to do some global inference checking.
* Even if it does register as a module, not guaranteed to be the precise
* name of the global. If a jQuery is tracked for this context, then go
* ahead and register it as a module too, if not already in process.
*/
jQueryCheck = function (jqCandidate) {
if (!context.jQuery) {
var $ = jqCandidate || (typeof jQuery !== "undefined" ? jQuery : null);
if ($) {
//If a specific version of jQuery is wanted, make sure to only
//use this jQuery if it matches.
if (config.jQuery && $.fn.jquery !== config.jQuery) {
return;
}
if ("holdReady" in $ || "readyWait" in $) {
context.jQuery = $;
//Manually create a "jquery" module entry if not one already
//or in process. Note this could trigger an attempt at
//a second jQuery registration, but does no harm since
//the first one wins, and it is the same value anyway.
callDefMain(["jquery", [], function () {
return jQuery;
}]);
//Ask jQuery to hold DOM ready callbacks.
if (context.scriptCount) {
jQueryHoldReady($, true);
context.jQueryIncremented = true;
}
}
}
}
};
function forceExec(manager, traced) {
if (manager.isDone) {
return undefined;
}
var fullName = manager.fullName,
depArray = manager.depArray,
depName, i;
if (fullName) {
if (traced[fullName]) {
return defined[fullName];
}
traced[fullName] = true;
}
//forceExec all of its dependencies.
for (i = 0; i < depArray.length; i++) {
//Some array members may be null, like if a trailing comma
//IE, so do the explicit [i] access and check if it has a value.
depName = depArray[i];
if (depName) {
if (!manager.deps[depName] && waiting[depName]) {
manager.onDep(depName, forceExec(waiting[depName], traced));
}
}
}
return fullName ? defined[fullName] : undefined;
}
/**
* Checks if all modules for a context are loaded, and if so, evaluates the
* new ones in right dependency order.
*
* @private
*/
function checkLoaded() {
var waitInterval = config.waitSeconds * 1000,
//It is possible to disable the wait interval by using waitSeconds of 0.
expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(),
noLoads = "", hasLoadedProp = false, stillLoading = false, prop,
err, manager;
//If there are items still in the paused queue processing wait.
//This is particularly important in the sync case where each paused
//item is processed right away but there may be more waiting.
if (context.pausedCount > 0) {
return undefined;
}
//Determine if priority loading is done. If so clear the priority. If
//not, then do not check
if (config.priorityWait) {
if (isPriorityDone()) {
//Call resume, since it could have
//some waiting dependencies to trace.
resume();
} else {
return undefined;
}
}
//See if anything is still in flight.
for (prop in loaded) {
if (!(prop in empty)) {
hasLoadedProp = true;
if (!loaded[prop]) {
if (expired) {
noLoads += prop + " ";
} else {
stillLoading = true;
break;
}
}
}
}
//Check for exit conditions.
if (!hasLoadedProp && !context.waitCount) {
//If the loaded object had no items, then the rest of
//the work below does not need to be done.
return undefined;
}
if (expired && noLoads) {
//If wait time expired, throw error of unloaded modules.
err = makeError("timeout", "Load timeout for modules: " + noLoads);
err.requireType = "timeout";
err.requireModules = noLoads;
return req.onError(err);
}
if (stillLoading || context.scriptCount) {
//Something is still waiting to load. Wait for it, but only
//if a timeout is not already in effect.
if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) {
checkLoadedTimeoutId = setTimeout(function () {
checkLoadedTimeoutId = 0;
checkLoaded();
}, 50);
}
return undefined;
}
//If still have items in the waiting cue, but all modules have
//been loaded, then it means there are some circular dependencies
//that need to be broken.
//However, as a waiting thing is fired, then it can add items to
//the waiting cue, and those items should not be fired yet, so
//make sure to redo the checkLoaded call after breaking a single
//cycle, if nothing else loaded then this logic will pick it up
//again.
if (context.waitCount) {
//Cycle through the waitAry, and call items in sequence.
for (i = 0; (manager = waitAry[i]); i++) {
forceExec(manager, {});
}
//Only allow this recursion to a certain depth. Only
//triggered by errors in calling a module in which its
//modules waiting on it cannot finish loading, or some circular
//dependencies that then may add more dependencies.
//The value of 5 is a bit arbitrary. Hopefully just one extra
//pass, or two for the case of circular dependencies generating
//more work that gets resolved in the sync node case.
if (checkLoadedDepth < 5) {
checkLoadedDepth += 1;
checkLoaded();
}
}
checkLoadedDepth = 0;
//Check for DOM ready, and nothing is waiting across contexts.
req.checkReadyState();
return undefined;
}
function callPlugin(pluginName, dep) {
var name = dep.name,
fullName = dep.fullName,
load;
//Do not bother if plugin is already defined or being loaded.
if (fullName in defined || fullName in loaded) {
return;
}
if (!plugins[pluginName]) {
plugins[pluginName] = defined[pluginName];
}
//Only set loaded to false for tracking if it has not already been set.
if (!loaded[fullName]) {
loaded[fullName] = false;
}
load = function (ret) {
//Allow the build process to register plugin-loaded dependencies.
if (req.onPluginLoad) {
req.onPluginLoad(context, pluginName, name, ret);
}
execManager({
prefix: dep.prefix,
name: dep.name,
fullName: dep.fullName,
callback: function () {
return ret;
}
});
loaded[fullName] = true;
};
//Allow plugins to load other code without having to know the
//context or how to "complete" the load.
load.fromText = function (moduleName, text) {
/*jslint evil: true */
var hasInteractive = useInteractive;
//Indicate a the module is in process of loading.
context.loaded[moduleName] = false;
context.scriptCount += 1;
//Turn off interactive script matching for IE for any define
//calls in the text, then turn it back on at the end.
if (hasInteractive) {
useInteractive = false;
}
req.exec(text);
if (hasInteractive) {
useInteractive = true;
}
//Support anonymous modules.
context.completeLoad(moduleName);
};
//Use parentName here since the plugin's name is not reliable,
//could be some weird string with no path that actually wants to
//reference the parentName's path.
plugins[pluginName].load(name, makeRequire(dep.parentMap, true), load, config);
}
function loadPaused(dep) {
//Renormalize dependency if its name was waiting on a plugin
//to load, which as since loaded.
if (dep.prefix && dep.name && dep.name.indexOf('__$p') === 0 && defined[dep.prefix]) {
dep = makeModuleMap(dep.originalName, dep.parentMap);
}
var pluginName = dep.prefix,
fullName = dep.fullName,
urlFetched = context.urlFetched;
//Do not bother if the dependency has already been specified.
if (specified[fullName] || loaded[fullName]) {
return;
} else {
specified[fullName] = true;
}
if (pluginName) {
//If plugin not loaded, wait for it.
//set up callback list. if no list, then register
//managerCallback for that plugin.
if (defined[pluginName]) {
callPlugin(pluginName, dep);
} else {
if (!pluginsQueue[pluginName]) {
pluginsQueue[pluginName] = [];
(managerCallbacks[pluginName] ||
(managerCallbacks[pluginName] = [])).push({
onDep: function (name, value) {
if (name === pluginName) {
var i, oldModuleMap, ary = pluginsQueue[pluginName];
//Now update all queued plugin actions.
for (i = 0; i < ary.length; i++) {
oldModuleMap = ary[i];
//Update the moduleMap since the
//module name may be normalized
//differently now.
callPlugin(pluginName,
makeModuleMap(oldModuleMap.originalName, oldModuleMap.parentMap));
}
delete pluginsQueue[pluginName];
}
}
});
}
pluginsQueue[pluginName].push(dep);
}
} else {
if (!urlFetched[dep.url]) {
req.load(context, fullName, dep.url);
urlFetched[dep.url] = true;
}
}
}
/**
* Resumes tracing of dependencies and then checks if everything is loaded.
*/
resume = function () {
var args, i, p;
resumeDepth += 1;
if (context.scriptCount <= 0) {
//Synchronous envs will push the number below zero with the
//decrement above, be sure to set it back to zero for good measure.
//require() calls that also do not end up loading scripts could
//push the number negative too.
context.scriptCount = 0;
}
//Make sure any remaining defQueue items get properly processed.
while (defQueue.length) {
args = defQueue.shift();
if (args[0] === null) {
return req.onError(makeError('mismatch', 'Mismatched anonymous define() module: ' + args[args.length - 1]));
} else {
callDefMain(args);
}
}
//Skip the resume of paused dependencies
//if current context is in priority wait.
if (!config.priorityWait || isPriorityDone()) {
while (context.paused.length) {
p = context.paused;
context.pausedCount += p.length;
//Reset paused list
context.paused = [];
for (i = 0; (args = p[i]); i++) {
loadPaused(args);
}
//Move the start time for timeout forward.
context.startTime = (new Date()).getTime();
context.pausedCount -= p.length;
}
}
//Only check if loaded when resume depth is 1. It is likely that
//it is only greater than 1 in sync environments where a factory
//function also then calls the callback-style require. In those
//cases, the checkLoaded should not occur until the resume
//depth is back at the top level.
if (resumeDepth === 1) {
checkLoaded();
}
resumeDepth -= 1;
return undefined;
};
//Define the context object. Many of these fields are on here
//just to make debugging easier.
context = {
contextName: contextName,
config: config,
defQueue: defQueue,
waiting: waiting,
waitCount: 0,
specified: specified,
loaded: loaded,
urlMap: urlMap,
scriptCount: 0,
urlFetched: {},
defined: defined,
paused: [],
pausedCount: 0,
plugins: plugins,
managerCallbacks: managerCallbacks,
makeModuleMap: makeModuleMap,
normalize: normalize,
/**
* Set a configuration for the context.
* @param {Object} cfg config object to integrate.
*/
configure: function (cfg) {
var paths, prop, packages, pkgs, packagePaths, requireWait;
//Make sure the baseUrl ends in a slash.
if (cfg.baseUrl) {
if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== "/") {
cfg.baseUrl += "/";
}
}
//Save off the paths and packages since they require special processing,
//they are additive.
paths = config.paths;
packages = config.packages;
pkgs = config.pkgs;
//Mix in the config values, favoring the new values over
//existing ones in context.config.
mixin(config, cfg, true);
//Adjust paths if necessary.
if (cfg.paths) {
for (prop in cfg.paths) {
if (!(prop in empty)) {
paths[prop] = cfg.paths[prop];
}
}
config.paths = paths;
}
packagePaths = cfg.packagePaths;
if (packagePaths || cfg.packages) {
//Convert packagePaths into a packages config.
if (packagePaths) {
for (prop in packagePaths) {
if (!(prop in empty)) {
configurePackageDir(pkgs, packagePaths[prop], prop);
}
}
}
//Adjust packages if necessary.
if (cfg.packages) {
configurePackageDir(pkgs, cfg.packages);
}
//Done with modifications, assing packages back to context config
config.pkgs = pkgs;
}
//If priority loading is in effect, trigger the loads now
if (cfg.priority) {
//Hold on to requireWait value, and reset it after done
requireWait = context.requireWait;
//Allow tracing some require calls to allow the fetching
//of the priority config.
context.requireWait = false;
//But first, call resume to register any defined modules that may
//be in a data-main built file before the priority config
//call. Also grab any waiting define calls for this context.
context.takeGlobalQueue();
resume();
context.require(cfg.priority);
//Trigger a resume right away, for the case when
//the script with the priority load is done as part
//of a data-main call. In that case the normal resume
//call will not happen because the scriptCount will be
//at 1, since the script for data-main is being processed.
resume();
//Restore previous state.
context.requireWait = requireWait;
config.priorityWait = cfg.priority;
}
//If a deps array or a config callback is specified, then call
//require with those args. This is useful when require is defined as a
//config object before require.js is loaded.
if (cfg.deps || cfg.callback) {
context.require(cfg.deps || [], cfg.callback);
}
//Set up ready callback, if asked. Useful when require is defined as a
//config object before require.js is loaded.
if (cfg.ready) {
req.ready(cfg.ready);
}
},
requireDefined: function (moduleName, relModuleMap) {
return makeModuleMap(moduleName, relModuleMap).fullName in defined;
},
requireSpecified: function (moduleName, relModuleMap) {
return makeModuleMap(moduleName, relModuleMap).fullName in specified;
},
require: function (deps, callback, relModuleMap) {
var moduleName, fullName, moduleMap;
if (typeof deps === "string") {
//Synchronous access to one module. If require.get is
//available (as in the Node adapter), prefer that.
//In this case deps is the moduleName and callback is
//the relModuleMap
if (req.get) {
return req.get(context, deps, callback);
}
//Just return the module wanted. In this scenario, the
//second arg (if passed) is just the relModuleMap.
moduleName = deps;
relModuleMap = callback;
//Normalize module name, if it contains . or ..
moduleMap = makeModuleMap(moduleName, relModuleMap);
fullName = moduleMap.fullName;
if (!(fullName in defined)) {
return req.onError(makeError("notloaded", "Module name '" +
moduleMap.fullName +
"' has not been loaded yet for context: " +
contextName));
}
return defined[fullName];
}
main(null, deps, callback, relModuleMap);
//If the require call does not trigger anything new to load,
//then resume the dependency processing.
if (!context.requireWait) {
while (!context.scriptCount && context.paused.length) {
//For built layers, there can be some defined
//modules waiting for intake into the context,
//in particular module plugins. Take them.
context.takeGlobalQueue();
resume();
}
}
return context.require;
},
/**
* Internal method to transfer globalQueue items to this context's
* defQueue.
*/
takeGlobalQueue: function () {
//Push all the globalDefQueue items into the context's defQueue
if (globalDefQueue.length) {
//Array splice in the values since the context code has a
//local var ref to defQueue, so cannot just reassign the one
//on context.
apsp.apply(context.defQueue,
[context.defQueue.length - 1, 0].concat(globalDefQueue));
globalDefQueue = [];
}
},
/**
* Internal method used by environment adapters to complete a load event.
* A load event could be a script load or just a load pass from a synchronous
* load call.
* @param {String} moduleName the name of the module to potentially complete.
*/
completeLoad: function (moduleName) {
var args;
context.takeGlobalQueue();
while (defQueue.length) {
args = defQueue.shift();
if (args[0] === null) {
args[0] = moduleName;
break;
} else if (args[0] === moduleName) {
//Found matching define call for this script!
break;
} else {
//Some other named define call, most likely the result
//of a build layer that included many define calls.
callDefMain(args);
args = null;
}
}
if (args) {
callDefMain(args);
} else {
//A script that does not call define(), so just simulate
//the call for it. Special exception for jQuery dynamic load.
callDefMain([moduleName, [],
moduleName === "jquery" && typeof jQuery !== "undefined" ?
function () {
return jQuery;
} : null]);
}
//Mark the script as loaded. Note that this can be different from a
//moduleName that maps to a define call. This line is important
//for traditional browser scripts.
loaded[moduleName] = true;
//If a global jQuery is defined, check for it. Need to do it here
//instead of main() since stock jQuery does not register as
//a module via define.
jQueryCheck();
//Doing this scriptCount decrement branching because sync envs
//need to decrement after resume, otherwise it looks like
//loading is complete after the first dependency is fetched.
//For browsers, it works fine to decrement after, but it means
//the checkLoaded setTimeout 50 ms cost is taken. To avoid
//that cost, decrement beforehand.
if (req.isAsync) {
context.scriptCount -= 1;
}
resume();
if (!req.isAsync) {
context.scriptCount -= 1;
}
},
/**
* Converts a module name + .extension into an URL path.
* *Requires* the use of a module name. It does not support using
* plain URLs like nameToUrl.
*/
toUrl: function (moduleNamePlusExt, relModuleMap) {
var index = moduleNamePlusExt.lastIndexOf("."),
ext = null;
if (index !== -1) {
ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length);
moduleNamePlusExt = moduleNamePlusExt.substring(0, index);
}
return context.nameToUrl(moduleNamePlusExt, ext, relModuleMap);
},
/**
* Converts a module name to a file path. Supports cases where
* moduleName may actually be just an URL.
*/
nameToUrl: function (moduleName, ext, relModuleMap) {
var paths, pkgs, pkg, pkgPath, syms, i, parentModule, url,
config = context.config;
//Normalize module name if have a base relative module name to work from.
moduleName = normalize(moduleName, relModuleMap && relModuleMap.fullName);
//If a colon is in the URL, it indicates a protocol is used and it is just
//an URL to a file, or if it starts with a slash or ends with .js, it is just a plain file.
//The slash is important for protocol-less URLs as well as full paths.
if (req.jsExtRegExp.test(moduleName)) {
//Just a plain path, not module name lookup, so just return it.
//Add extension if it is included. This is a bit wonky, only non-.js things pass
//an extension, this method probably needs to be reworked.
url = moduleName + (ext ? ext : "");
} else {
//A module that needs to be converted to a path.
paths = config.paths;
pkgs = config.pkgs;
syms = moduleName.split("/");
//For each module name segment, see if there is a path
//registered for it. Start with most specific name
//and work up from it.
for (i = syms.length; i > 0; i--) {
parentModule = syms.slice(0, i).join("/");
if (paths[parentModule]) {
syms.splice(0, i, paths[parentModule]);
break;
} else if ((pkg = pkgs[parentModule])) {
//If module name is just the package name, then looking
//for the main module.
if (moduleName === pkg.name) {
pkgPath = pkg.location + '/' + pkg.main;
} else {
pkgPath = pkg.location;
}
syms.splice(0, i, pkgPath);
break;
}
}
//Join the path parts together, then figure out if baseUrl is needed.
url = syms.join("/") + (ext || ".js");
url = (url.charAt(0) === '/' || url.match(/^\w+:/) ? "" : config.baseUrl) + url;
}
return config.urlArgs ? url +
((url.indexOf('?') === -1 ? '?' : '&') +
config.urlArgs) : url;
}
};
//Make these visible on the context so can be called at the very
//end of the file to bootstrap
context.jQueryCheck = jQueryCheck;
context.resume = resume;
return context;
}
/**
* Main entry point.
*
* If the only argument to require is a string, then the module that
* is represented by that string is fetched for the appropriate context.
*
* If the first argument is an array, then it will be treated as an array
* of dependency string names to fetch. An optional function callback can
* be specified to execute when all of those dependencies are available.
*
* Make a local req variable to help Caja compliance (it assumes things
* on a require that are not standardized), and to give a short
* name for minification/local scope use.
*/
req = requirejs = function (deps, callback) {
//Find the right context, use default
var contextName = defContextName,
context, config;
// Determine if have config object in the call.
if (!isArray(deps) && typeof deps !== "string") {
// deps is a config object
config = deps;
if (isArray(callback)) {
// Adjust args if there are dependencies
deps = callback;
callback = arguments[2];
} else {
deps = [];
}
}
if (config && config.context) {
contextName = config.context;
}
context = contexts[contextName] ||
(contexts[contextName] = newContext(contextName));
if (config) {
context.configure(config);
}
return context.require(deps, callback);
};
/**
* Support require.config() to make it easier to cooperate with other
* AMD loaders on globally agreed names.
*/
req.config = function (config) {
return req(config);
};
/**
* Export require as a global, but only if it does not already exist.
*/
if (typeof require === "undefined") {
require = req;
}
/**
* Global require.toUrl(), to match global require, mostly useful
* for debugging/work in the global space.
*/
req.toUrl = function (moduleNamePlusExt) {
return contexts[defContextName].toUrl(moduleNamePlusExt);
};
req.version = version;
req.isArray = isArray;
req.isFunction = isFunction;
req.mixin = mixin;
//Used to filter out dependencies that are already paths.
req.jsExtRegExp = /^\/|:|\?|\.js$/;
s = req.s = {
contexts: contexts,
//Stores a list of URLs that should not get async script tag treatment.
skipAsync: {},
isPageLoaded: !isBrowser,
readyCalls: []
};
req.isAsync = req.isBrowser = isBrowser;
if (isBrowser) {
head = s.head = document.getElementsByTagName("head")[0];
//If BASE tag is in play, using appendChild is a problem for IE6.
//When that browser dies, this can be removed. Details in this jQuery bug:
//http://dev.jquery.com/ticket/2709
baseElement = document.getElementsByTagName("base")[0];
if (baseElement) {
head = s.head = baseElement.parentNode;
}
}
/**
* Any errors that require explicitly generates will be passed to this
* function. Intercept/override it if you want custom error handling.
* @param {Error} err the error object.
*/
req.onError = function (err) {
throw err;
};
/**
* Does the request to load a module for the browser case.
* Make this a separate function to allow other environments
* to override it.
*
* @param {Object} context the require context to find state.
* @param {String} moduleName the name of the module.
* @param {Object} url the URL to the module.
*/
req.load = function (context, moduleName, url) {
var loaded = context.loaded;
isDone = false;
//Only set loaded to false for tracking if it has not already been set.
if (!loaded[moduleName]) {
loaded[moduleName] = false;
}
context.scriptCount += 1;
req.attach(url, context, moduleName);
//If tracking a jQuery, then make sure its ready callbacks
//are put on hold to prevent its ready callbacks from
//triggering too soon.
if (context.jQuery && !context.jQueryIncremented) {
jQueryHoldReady(context.jQuery, true);
context.jQueryIncremented = true;
}
};
function getInteractiveScript() {
var scripts, i, script;
if (interactiveScript && interactiveScript.readyState === 'interactive') {
return interactiveScript;
}
scripts = document.getElementsByTagName('script');
for (i = scripts.length - 1; i > -1 && (script = scripts[i]); i--) {
if (script.readyState === 'interactive') {
return (interactiveScript = script);
}
}
return null;
}
/**
* The function that handles definitions of modules. Differs from
* require() in that a string for the module should be the first argument,
* and the function to execute after dependencies are loaded should
* return a value to define the module corresponding to the first argument's
* name.
*/
define = req.def = function (name, deps, callback) {
var node, context;
//Allow for anonymous functions
if (typeof name !== 'string') {
//Adjust args appropriately
callback = deps;
deps = name;
name = null;
}
//This module may not have dependencies
if (!req.isArray(deps)) {
callback = deps;
deps = [];
}
//If no name, and callback is a function, then figure out if it a
//CommonJS thing with dependencies.
if (!name && !deps.length && req.isFunction(callback)) {
//Remove comments from the callback string,
//look for require calls, and pull them into the dependencies,
//but only if there are function args.
if (callback.length) {
callback
.toString()
.replace(commentRegExp, "")
.replace(cjsRequireRegExp, function (match, dep) {
deps.push(dep);
});
//May be a CommonJS thing even without require calls, but still
//could use exports, and module. Avoid doing exports and module
//work though if it just needs require.
//REQUIRES the function to expect the CommonJS variables in the
//order listed below.
deps = (callback.length === 1 ? ["require"] : ["require", "exports", "module"]).concat(deps);
}
}
//If in IE 6-8 and hit an anonymous define() call, do the interactive
//work.
if (useInteractive) {
node = currentlyAddingScript || getInteractiveScript();
if (node) {
if (!name) {
name = node.getAttribute("data-requiremodule");
}
context = contexts[node.getAttribute("data-requirecontext")];
}
}
//Always save off evaluating the def call until the script onload handler.
//This allows multiple modules to be in a file without prematurely
//tracing dependencies, and allows for anonymous module support,
//where the module name is not known until the script onload event
//occurs. If no context, use the global queue, and get it processed
//in the onscript load callback.
(context ? context.defQueue : globalDefQueue).push([name, deps, callback]);
return undefined;
};
define.amd = {
multiversion: true,
plugins: true,
jQuery: true
};
/**
* Executes the text. Normally just uses eval, but can be modified
* to use a more environment specific call.
* @param {String} text the text to execute/evaluate.
*/
req.exec = function (text) {
return eval(text);
};
/**
* Executes a module callack function. Broken out as a separate function
* solely to allow the build system to sequence the files in the built
* layer in the right sequence.
*
* @private
*/
req.execCb = function (name, callback, args, exports) {
return callback.apply(exports, args);
};
/**
* callback for script loads, used to check status of loading.
*
* @param {Event} evt the event from the browser for the script
* that was loaded.
*
* @private
*/
req.onScriptLoad = function (evt) {
//Using currentTarget instead of target for Firefox 2.0's sake. Not
//all old browsers will be supported, but this one was easy enough
//to support and still makes sense.
var node = evt.currentTarget || evt.srcElement || currentlyAddingScript, contextName, moduleName,
context;
if (evt.type === "load" || readyRegExp.test(node.readyState)) {
//Reset interactive script so a script node is not held onto for
//to long.
interactiveScript = null;
//Pull out the name of the module and the context.
contextName = node.getAttribute("data-requirecontext");
moduleName = node.getAttribute("data-requiremodule");
context = contexts[contextName];
contexts[contextName].completeLoad(moduleName);
//Clean up script binding. Favor detachEvent because of IE9
//issue, see attachEvent/addEventListener comment elsewhere
//in this file.
if (node.detachEvent && !isOpera) {
//Probably IE. If not it will throw an error, which will be
//useful to know.
node.detachEvent("onreadystatechange", req.onScriptLoad);
} else {
node.removeEventListener("load", req.onScriptLoad, false);
}
}
};
/**
* Attaches the script represented by the URL to the current
* environment. Right now only supports browser loading,
* but can be redefined in other environments to do the right thing.
* @param {String} url the url of the script to attach.
* @param {Object} context the context that wants the script.
* @param {moduleName} the name of the module that is associated with the script.
* @param {Function} [callback] optional callback, defaults to require.onScriptLoad
* @param {String} [type] optional type, defaults to text/javascript
*/
req.attach = function (url, context, moduleName, callback, type) {
var node, loaded;
if (isBrowser) {
//In the browser so use a script tag
callback = callback || req.onScriptLoad;
node = context && context.config && context.config.xhtml ?
document.createElementNS("http://www.w3.org/1999/xhtml", "html:script") :
document.createElement("script");
node.type = type || "text/javascript";
node.charset = "utf-8";
//Use async so Gecko does not block on executing the script if something
//like a long-polling comet tag is being run first. Gecko likes
//to evaluate scripts in DOM order, even for dynamic scripts.
//It will fetch them async, but only evaluate the contents in DOM
//order, so a long-polling script tag can delay execution of scripts
//after it. But telling Gecko we expect async gets us the behavior
//we want -- execute it whenever it is finished downloading. Only
//Helps Firefox 3.6+
//Allow some URLs to not be fetched async. Mostly helps the order!
//plugin
node.async = !s.skipAsync[url];
if (context) {
node.setAttribute("data-requirecontext", context.contextName);
}
node.setAttribute("data-requiremodule", moduleName);
//Set up load listener. Test attachEvent first because IE9 has
//a subtle issue in its addEventListener and script onload firings
//that do not match the behavior of all other browsers with
//addEventListener support, which fire the onload event for a
//script right after the script execution. See:
//https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution
//UNFORTUNATELY Opera implements attachEvent but does not follow the script
//script execution mode.
if (node.attachEvent && !isOpera) {
//Probably IE. IE (at least 6-8) do not fire
//script onload right after executing the script, so
//we cannot tie the anonymous define call to a name.
//However, IE reports the script as being in "interactive"
//readyState at the time of the define call.
useInteractive = true;
node.attachEvent("onreadystatechange", callback);
} else {
node.addEventListener("load", callback, false);
}
node.src = url;
//For some cache cases in IE 6-8, the script executes before the end
//of the appendChild execution, so to tie an anonymous define
//call to the module name (which is stored on the node), hold on
//to a reference to this node, but clear after the DOM insertion.
currentlyAddingScript = node;
if (baseElement) {
head.insertBefore(node, baseElement);
} else {
head.appendChild(node);
}
currentlyAddingScript = null;
return node;
} else if (isWebWorker) {
//In a web worker, use importScripts. This is not a very
//efficient use of importScripts, importScripts will block until
//its script is downloaded and evaluated. However, if web workers
//are in play, the expectation that a build has been done so that
//only one script needs to be loaded anyway. This may need to be
//reevaluated if other use cases become common.
loaded = context.loaded;
loaded[moduleName] = false;
importScripts(url);
//Account for anonymous modules
context.completeLoad(moduleName);
}
return null;
};
//Look for a data-main script attribute, which could also adjust the baseUrl.
if (isBrowser) {
//Figure out baseUrl. Get it from the script tag with require.js in it.
scripts = document.getElementsByTagName("script");
for (i = scripts.length - 1; i > -1 && (script = scripts[i]); i--) {
//Set the "head" where we can append children by
//using the script's parent.
if (!head) {
head = script.parentNode;
}
//Look for a data-main attribute to set main script for the page
//to load. If it is there, the path to data main becomes the
//baseUrl, if it is not already set.
if ((dataMain = script.getAttribute('data-main'))) {
if (!cfg.baseUrl) {
//Pull off the directory of data-main for use as the
//baseUrl.
src = dataMain.split('/');
mainScript = src.pop();
subPath = src.length ? src.join('/') + '/' : './';
//Set final config.
cfg.baseUrl = subPath;
//Strip off any trailing .js since dataMain is now
//like a module name.
dataMain = mainScript.replace(jsSuffixRegExp, '');
}
//Put the data-main script in the files to load.
cfg.deps = cfg.deps ? cfg.deps.concat(dataMain) : [dataMain];
break;
}
}
}
//Set baseUrl based on config.
s.baseUrl = cfg.baseUrl;
//****** START page load functionality ****************
/**
* Sets the page as loaded and triggers check for all modules loaded.
*/
req.pageLoaded = function () {
if (!s.isPageLoaded) {
s.isPageLoaded = true;
if (scrollIntervalId) {
clearInterval(scrollIntervalId);
}
//Part of a fix for FF < 3.6 where readyState was not set to
//complete so libraries like jQuery that check for readyState
//after page load where not getting initialized correctly.
//Original approach suggested by Andrea Giammarchi:
//http://webreflection.blogspot.com/2009/11/195-chars-to-help-lazy-loading.html
//see other setReadyState reference for the rest of the fix.
if (setReadyState) {
document.readyState = "complete";
}
req.callReady();
}
};
//See if there is nothing waiting across contexts, and if not, trigger
//callReady.
req.checkReadyState = function () {
var contexts = s.contexts, prop;
for (prop in contexts) {
if (!(prop in empty)) {
if (contexts[prop].waitCount) {
return;
}
}
}
s.isDone = true;
req.callReady();
};
/**
* Internal function that calls back any ready functions. If you are
* integrating RequireJS with another library without require.ready support,
* you can define this method to call your page ready code instead.
*/
req.callReady = function () {
var callbacks = s.readyCalls, i, callback, contexts, context, prop;
if (s.isPageLoaded && s.isDone) {
if (callbacks.length) {
s.readyCalls = [];
for (i = 0; (callback = callbacks[i]); i++) {
callback();
}
}
//If jQuery with DOM ready delayed, release it now.
contexts = s.contexts;
for (prop in contexts) {
if (!(prop in empty)) {
context = contexts[prop];
if (context.jQueryIncremented) {
jQueryHoldReady(context.jQuery, false);
context.jQueryIncremented = false;
}
}
}
}
};
/**
* Registers functions to call when the page is loaded
*/
req.ready = function (callback) {
if (s.isPageLoaded && s.isDone) {
callback();
} else {
s.readyCalls.push(callback);
}
return req;
};
if (isBrowser) {
if (document.addEventListener) {
//Standards. Hooray! Assumption here that if standards based,
//it knows about DOMContentLoaded.
document.addEventListener("DOMContentLoaded", req.pageLoaded, false);
window.addEventListener("load", req.pageLoaded, false);
//Part of FF < 3.6 readystate fix (see setReadyState refs for more info)
if (!document.readyState) {
setReadyState = true;
document.readyState = "loading";
}
} else if (window.attachEvent) {
window.attachEvent("onload", req.pageLoaded);
//DOMContentLoaded approximation, as found by Diego Perini:
//http://javascript.nwbox.com/IEContentLoaded/
if (self === self.top) {
scrollIntervalId = setInterval(function () {
try {
//From this ticket:
//http://bugs.dojotoolkit.org/ticket/11106,
//In IE HTML Application (HTA), such as in a selenium test,
//javascript in the iframe can't see anything outside
//of it, so self===self.top is true, but the iframe is
//not the top window and doScroll will be available
//before document.body is set. Test document.body
//before trying the doScroll trick.
if (document.body) {
document.documentElement.doScroll("left");
req.pageLoaded();
}
} catch (e) {}
}, 30);
}
}
//Check if document already complete, and if so, just trigger page load
//listeners. NOTE: does not work with Firefox before 3.6. To support
//those browsers, manually call require.pageLoaded().
if (document.readyState === "complete") {
req.pageLoaded();
}
}
//****** END page load functionality ****************
//Set up default context. If require was a configuration object, use that as base config.
req(cfg);
//If modules are built into require.js, then need to make sure dependencies are
//traced. Use a setTimeout in the browser world, to allow all the modules to register
//themselves. In a non-browser env, assume that modules are not built into require.js,
//which seems odd to do on the server.
if (req.isAsync && typeof setTimeout !== "undefined") {
ctx = s.contexts[(cfg.context || defContextName)];
//Indicate that the script that includes require() is still loading,
//so that require()'d dependencies are not traced until the end of the
//file is parsed (approximated via the setTimeout call).
ctx.requireWait = true;
setTimeout(function () {
ctx.requireWait = false;
//Any modules included with the require.js file will be in the
//global queue, assign them to this context.
ctx.takeGlobalQueue();
//Allow for jQuery to be loaded/already in the page, and if jQuery 1.4.3,
//make sure to hold onto it for readyWait triggering.
ctx.jQueryCheck();
if (!ctx.scriptCount) {
ctx.resume();
}
req.checkReadyState();
}, 0);
}
}());
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