/*! * @overview Ember - JavaScript Application Framework * @copyright Copyright 2011-2015 Tilde Inc. and contributors * Portions Copyright 2006-2011 Strobe Inc. * Portions Copyright 2008-2011 Apple Inc. All rights reserved. * @license Licensed under MIT license * See https://raw.github.com/emberjs/ember.js/master/LICENSE * @version 1.11.0-beta.3.780ac356 */ (function() { var enifed, requireModule, eriuqer, requirejs, Ember; var mainContext = this; (function() { Ember = this.Ember = this.Ember || {}; if (typeof Ember === 'undefined') { Ember = {}; }; function UNDEFINED() { } if (typeof Ember.__loader === 'undefined') { var registry = {}; var seen = {}; enifed = function(name, deps, callback) { var value = { }; if (!callback) { value.deps = []; value.callback = deps; } else { value.deps = deps; value.callback = callback; } registry[name] = value; }; requirejs = eriuqer = requireModule = function(name) { var s = seen[name]; if (s !== undefined) { return seen[name]; } if (s === UNDEFINED) { return undefined; } seen[name] = {}; if (!registry[name]) { throw new Error('Could not find module ' + name); } var mod = registry[name]; var deps = mod.deps; var callback = mod.callback; var reified = []; var exports; var length = deps.length; for (var i=0; i 3) { args = new Array(length - 3); for (var i = 3; i < length; i++) { args[i-3] = arguments[i]; } } else { args = undefined; } if (!this.currentInstance) { createAutorun(this); } return this.currentInstance.schedule(queueName, target, method, args, false, stack); }, deferOnce: function(queueName, target, method /* , args */) { if (!method) { method = target; target = null; } if (isString(method)) { method = target[method]; } var stack = this.DEBUG ? new Error() : undefined; var length = arguments.length; var args; if (length > 3) { args = new Array(length - 3); for (var i = 3; i < length; i++) { args[i-3] = arguments[i]; } } else { args = undefined; } if (!this.currentInstance) { createAutorun(this); } return this.currentInstance.schedule(queueName, target, method, args, true, stack); }, setTimeout: function() { var l = arguments.length; var args = new Array(l); for (var x = 0; x < l; x++) { args[x] = arguments[x]; } var length = args.length, method, wait, target, methodOrTarget, methodOrWait, methodOrArgs; if (length === 0) { return; } else if (length === 1) { method = args.shift(); wait = 0; } else if (length === 2) { methodOrTarget = args[0]; methodOrWait = args[1]; if (isFunction(methodOrWait) || isFunction(methodOrTarget[methodOrWait])) { target = args.shift(); method = args.shift(); wait = 0; } else if (isCoercableNumber(methodOrWait)) { method = args.shift(); wait = args.shift(); } else { method = args.shift(); wait = 0; } } else { var last = args[args.length - 1]; if (isCoercableNumber(last)) { wait = args.pop(); } else { wait = 0; } methodOrTarget = args[0]; methodOrArgs = args[1]; if (isFunction(methodOrArgs) || (isString(methodOrArgs) && methodOrTarget !== null && methodOrArgs in methodOrTarget)) { target = args.shift(); method = args.shift(); } else { method = args.shift(); } } var executeAt = now() + parseInt(wait, 10); if (isString(method)) { method = target[method]; } var onError = getOnError(this.options); function fn() { if (onError) { try { method.apply(target, args); } catch (e) { onError(e); } } else { method.apply(target, args); } } // find position to insert var i = searchTimer(executeAt, this._timers); this._timers.splice(i, 0, executeAt, fn); updateLaterTimer(this, executeAt, wait); return fn; }, throttle: function(target, method /* , args, wait, [immediate] */) { var backburner = this; var args = arguments; var immediate = pop.call(args); var wait, throttler, index, timer; if (isNumber(immediate) || isString(immediate)) { wait = immediate; immediate = true; } else { wait = pop.call(args); } wait = parseInt(wait, 10); index = findThrottler(target, method, this._throttlers); if (index > -1) { return this._throttlers[index]; } // throttled timer = global.setTimeout(function() { if (!immediate) { backburner.run.apply(backburner, args); } var index = findThrottler(target, method, backburner._throttlers); if (index > -1) { backburner._throttlers.splice(index, 1); } }, wait); if (immediate) { this.run.apply(this, args); } throttler = [target, method, timer]; this._throttlers.push(throttler); return throttler; }, debounce: function(target, method /* , args, wait, [immediate] */) { var backburner = this; var args = arguments; var immediate = pop.call(args); var wait, index, debouncee, timer; if (isNumber(immediate) || isString(immediate)) { wait = immediate; immediate = false; } else { wait = pop.call(args); } wait = parseInt(wait, 10); // Remove debouncee index = findDebouncee(target, method, this._debouncees); if (index > -1) { debouncee = this._debouncees[index]; this._debouncees.splice(index, 1); clearTimeout(debouncee[2]); } timer = global.setTimeout(function() { if (!immediate) { backburner.run.apply(backburner, args); } var index = findDebouncee(target, method, backburner._debouncees); if (index > -1) { backburner._debouncees.splice(index, 1); } }, wait); if (immediate && index === -1) { backburner.run.apply(backburner, args); } debouncee = [ target, method, timer ]; backburner._debouncees.push(debouncee); return debouncee; }, cancelTimers: function() { var clearItems = function(item) { clearTimeout(item[2]); }; each(this._throttlers, clearItems); this._throttlers = []; each(this._debouncees, clearItems); this._debouncees = []; if (this._laterTimer) { clearTimeout(this._laterTimer); this._laterTimer = null; } this._timers = []; if (this._autorun) { clearTimeout(this._autorun); this._autorun = null; } }, hasTimers: function() { return !!this._timers.length || !!this._debouncees.length || !!this._throttlers.length || this._autorun; }, cancel: function(timer) { var timerType = typeof timer; if (timer && timerType === 'object' && timer.queue && timer.method) { // we're cancelling a deferOnce return timer.queue.cancel(timer); } else if (timerType === 'function') { // we're cancelling a setTimeout for (var i = 0, l = this._timers.length; i < l; i += 2) { if (this._timers[i + 1] === timer) { this._timers.splice(i, 2); // remove the two elements if (i === 0) { if (this._laterTimer) { // Active timer? Then clear timer and reset for future timer clearTimeout(this._laterTimer); this._laterTimer = null; } if (this._timers.length > 0) { // Update to next available timer when available updateLaterTimer(this, this._timers[0], this._timers[0] - now()); } } return true; } } } else if (Object.prototype.toString.call(timer) === "[object Array]"){ // we're cancelling a throttle or debounce return this._cancelItem(findThrottler, this._throttlers, timer) || this._cancelItem(findDebouncee, this._debouncees, timer); } else { return; // timer was null or not a timer } }, _cancelItem: function(findMethod, array, timer){ var item, index; if (timer.length < 3) { return false; } index = findMethod(timer[0], timer[1], array); if (index > -1) { item = array[index]; if (item[2] === timer[2]) { array.splice(index, 1); clearTimeout(timer[2]); return true; } } return false; } }; Backburner.prototype.schedule = Backburner.prototype.defer; Backburner.prototype.scheduleOnce = Backburner.prototype.deferOnce; Backburner.prototype.later = Backburner.prototype.setTimeout; if (needsIETryCatchFix) { var originalRun = Backburner.prototype.run; Backburner.prototype.run = wrapInTryCatch(originalRun); var originalEnd = Backburner.prototype.end; Backburner.prototype.end = wrapInTryCatch(originalEnd); } function getOnError(options) { return options.onError || (options.onErrorTarget && options.onErrorTarget[options.onErrorMethod]); } function createAutorun(backburner) { backburner.begin(); backburner._autorun = global.setTimeout(function() { backburner._autorun = null; backburner.end(); }); } function updateLaterTimer(backburner, executeAt, wait) { var n = now(); if (!backburner._laterTimer || executeAt < backburner._laterTimerExpiresAt || backburner._laterTimerExpiresAt < n) { if (backburner._laterTimer) { // Clear when: // - Already expired // - New timer is earlier clearTimeout(backburner._laterTimer); if (backburner._laterTimerExpiresAt < n) { // If timer was never triggered // Calculate the left-over wait-time wait = Math.max(0, executeAt - n); } } backburner._laterTimer = global.setTimeout(function() { backburner._laterTimer = null; backburner._laterTimerExpiresAt = null; executeTimers(backburner); }, wait); backburner._laterTimerExpiresAt = n + wait; } } function executeTimers(backburner) { var n = now(); var fns, i, l; backburner.run(function() { i = searchTimer(n, backburner._timers); fns = backburner._timers.splice(0, i); for (i = 1, l = fns.length; i < l; i += 2) { backburner.schedule(backburner.options.defaultQueue, null, fns[i]); } }); if (backburner._timers.length) { updateLaterTimer(backburner, backburner._timers[0], backburner._timers[0] - n); } } function findDebouncee(target, method, debouncees) { return findItem(target, method, debouncees); } function findThrottler(target, method, throttlers) { return findItem(target, method, throttlers); } function findItem(target, method, collection) { var item; var index = -1; for (var i = 0, l = collection.length; i < l; i++) { item = collection[i]; if (item[0] === target && item[1] === method) { index = i; break; } } return index; } __exports__["default"] = Backburner; }); enifed("backburner.umd", ["./backburner"], function(__dependency1__) { "use strict"; var Backburner = __dependency1__["default"]; /* global define:true module:true window: true */ if (typeof enifed === 'function' && enifed.amd) { enifed(function() { return Backburner; }); } else if (typeof module !== 'undefined' && module.exports) { module.exports = Backburner; } else if (typeof this !== 'undefined') { this['Backburner'] = Backburner; } }); enifed("backburner/binary-search", ["exports"], function(__exports__) { "use strict"; __exports__["default"] = function binarySearch(time, timers) { var start = 0; var end = timers.length - 2; var middle, l; while (start < end) { // since timers is an array of pairs 'l' will always // be an integer l = (end - start) / 2; // compensate for the index in case even number // of pairs inside timers middle = start + l - (l % 2); if (time >= timers[middle]) { start = middle + 2; } else { end = middle; } } return (time >= timers[start]) ? start + 2 : start; } }); enifed("backburner/deferred-action-queues", ["./utils","./queue","exports"], function(__dependency1__, __dependency2__, __exports__) { "use strict"; var each = __dependency1__.each; var Queue = __dependency2__["default"]; function DeferredActionQueues(queueNames, options) { var queues = this.queues = Object.create(null); this.queueNames = queueNames = queueNames || []; this.options = options; each(queueNames, function(queueName) { queues[queueName] = new Queue(queueName, options[queueName], options); }); } function noSuchQueue(name) { throw new Error("You attempted to schedule an action in a queue (" + name + ") that doesn't exist"); } DeferredActionQueues.prototype = { schedule: function(name, target, method, args, onceFlag, stack) { var queues = this.queues; var queue = queues[name]; if (!queue) { noSuchQueue(name); } if (onceFlag) { return queue.pushUnique(target, method, args, stack); } else { return queue.push(target, method, args, stack); } }, flush: function() { var queues = this.queues; var queueNames = this.queueNames; var queueName, queue, queueItems, priorQueueNameIndex; var queueNameIndex = 0; var numberOfQueues = queueNames.length; var options = this.options; while (queueNameIndex < numberOfQueues) { queueName = queueNames[queueNameIndex]; queue = queues[queueName]; var numberOfQueueItems = queue._queue.length; if (numberOfQueueItems === 0) { queueNameIndex++; } else { queue.flush(false /* async */); queueNameIndex = 0; } } } }; __exports__["default"] = DeferredActionQueues; }); enifed("backburner/platform", ["exports"], function(__exports__) { "use strict"; // In IE 6-8, try/finally doesn't work without a catch. // Unfortunately, this is impossible to test for since wrapping it in a parent try/catch doesn't trigger the bug. // This tests for another broken try/catch behavior that only exhibits in the same versions of IE. var needsIETryCatchFix = (function(e,x){ try{ x(); } catch(e) { } // jshint ignore:line return !!e; })(); __exports__.needsIETryCatchFix = needsIETryCatchFix; }); enifed("backburner/queue", ["./utils","exports"], function(__dependency1__, __exports__) { "use strict"; var isString = __dependency1__.isString; function Queue(name, options, globalOptions) { this.name = name; this.globalOptions = globalOptions || {}; this.options = options; this._queue = []; this.targetQueues = Object.create(null); this._queueBeingFlushed = undefined; } Queue.prototype = { push: function(target, method, args, stack) { var queue = this._queue; queue.push(target, method, args, stack); return { queue: this, target: target, method: method }; }, pushUniqueWithoutGuid: function(target, method, args, stack) { var queue = this._queue; for (var i = 0, l = queue.length; i < l; i += 4) { var currentTarget = queue[i]; var currentMethod = queue[i+1]; if (currentTarget === target && currentMethod === method) { queue[i+2] = args; // replace args queue[i+3] = stack; // replace stack return; } } queue.push(target, method, args, stack); }, targetQueue: function(targetQueue, target, method, args, stack) { var queue = this._queue; for (var i = 0, l = targetQueue.length; i < l; i += 4) { var currentMethod = targetQueue[i]; var currentIndex = targetQueue[i + 1]; if (currentMethod === method) { queue[currentIndex + 2] = args; // replace args queue[currentIndex + 3] = stack; // replace stack return; } } targetQueue.push( method, queue.push(target, method, args, stack) - 4 ); }, pushUniqueWithGuid: function(guid, target, method, args, stack) { var hasLocalQueue = this.targetQueues[guid]; if (hasLocalQueue) { this.targetQueue(hasLocalQueue, target, method, args, stack); } else { this.targetQueues[guid] = [ method, this._queue.push(target, method, args, stack) - 4 ]; } return { queue: this, target: target, method: method }; }, pushUnique: function(target, method, args, stack) { var queue = this._queue, currentTarget, currentMethod, i, l; var KEY = this.globalOptions.GUID_KEY; if (target && KEY) { var guid = target[KEY]; if (guid) { return this.pushUniqueWithGuid(guid, target, method, args, stack); } } this.pushUniqueWithoutGuid(target, method, args, stack); return { queue: this, target: target, method: method }; }, invoke: function(target, method, args, _, _errorRecordedForStack) { if (args && args.length > 0) { method.apply(target, args); } else { method.call(target); } }, invokeWithOnError: function(target, method, args, onError, errorRecordedForStack) { try { if (args && args.length > 0) { method.apply(target, args); } else { method.call(target); } } catch(error) { onError(error, errorRecordedForStack); } }, flush: function(sync) { var queue = this._queue; var length = queue.length; if (length === 0) { return; } var globalOptions = this.globalOptions; var options = this.options; var before = options && options.before; var after = options && options.after; var onError = globalOptions.onError || (globalOptions.onErrorTarget && globalOptions.onErrorTarget[globalOptions.onErrorMethod]); var target, method, args, errorRecordedForStack; var invoke = onError ? this.invokeWithOnError : this.invoke; this.targetQueues = Object.create(null); var queueItems = this._queueBeingFlushed = this._queue.slice(); this._queue = []; if (before) { before(); } for (var i = 0; i < length; i += 4) { target = queueItems[i]; method = queueItems[i+1]; args = queueItems[i+2]; errorRecordedForStack = queueItems[i+3]; // Debugging assistance if (isString(method)) { method = target[method]; } // method could have been nullified / canceled during flush if (method) { // // ** Attention intrepid developer ** // // To find out the stack of this task when it was scheduled onto // the run loop, add the following to your app.js: // // Ember.run.backburner.DEBUG = true; // NOTE: This slows your app, don't leave it on in production. // // Once that is in place, when you are at a breakpoint and navigate // here in the stack explorer, you can look at `errorRecordedForStack.stack`, // which will be the captured stack when this job was scheduled. // invoke(target, method, args, onError, errorRecordedForStack); } } if (after) { after(); } this._queueBeingFlushed = undefined; if (sync !== false && this._queue.length > 0) { // check if new items have been added this.flush(true); } }, cancel: function(actionToCancel) { var queue = this._queue, currentTarget, currentMethod, i, l; var target = actionToCancel.target; var method = actionToCancel.method; var GUID_KEY = this.globalOptions.GUID_KEY; if (GUID_KEY && this.targetQueues && target) { var targetQueue = this.targetQueues[target[GUID_KEY]]; if (targetQueue) { for (i = 0, l = targetQueue.length; i < l; i++) { if (targetQueue[i] === method) { targetQueue.splice(i, 1); } } } } for (i = 0, l = queue.length; i < l; i += 4) { currentTarget = queue[i]; currentMethod = queue[i+1]; if (currentTarget === target && currentMethod === method) { queue.splice(i, 4); return true; } } // if not found in current queue // could be in the queue that is being flushed queue = this._queueBeingFlushed; if (!queue) { return; } for (i = 0, l = queue.length; i < l; i += 4) { currentTarget = queue[i]; currentMethod = queue[i+1]; if (currentTarget === target && currentMethod === method) { // don't mess with array during flush // just nullify the method queue[i+1] = null; return true; } } } }; __exports__["default"] = Queue; }); enifed("backburner/utils", ["exports"], function(__exports__) { "use strict"; var NUMBER = /\d+/; function each(collection, callback) { for (var i = 0; i < collection.length; i++) { callback(collection[i]); } } __exports__.each = each;// Date.now is not available in browsers < IE9 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/now#Compatibility var now = Date.now || function() { return new Date().getTime(); }; __exports__.now = now; function isString(suspect) { return typeof suspect === 'string'; } __exports__.isString = isString;function isFunction(suspect) { return typeof suspect === 'function'; } __exports__.isFunction = isFunction;function isNumber(suspect) { return typeof suspect === 'number'; } __exports__.isNumber = isNumber;function isCoercableNumber(number) { return isNumber(number) || NUMBER.test(number); } __exports__.isCoercableNumber = isCoercableNumber;function wrapInTryCatch(func) { return function () { try { return func.apply(this, arguments); } catch (e) { throw e; } }; } __exports__.wrapInTryCatch = wrapInTryCatch; }); enifed("calculateVersion", [], function() { "use strict"; 'use strict'; var fs = eriuqer('fs'); var path = eriuqer('path'); module.exports = function () { var packageVersion = eriuqer('../package.json').version; var output = [packageVersion]; var gitPath = path.join(__dirname,'..','.git'); var headFilePath = path.join(gitPath, 'HEAD'); if (packageVersion.indexOf('+') > -1) { try { if (fs.existsSync(headFilePath)) { var headFile = fs.readFileSync(headFilePath, {encoding: 'utf8'}); var branchName = headFile.split('/').slice(-1)[0].trim(); var refPath = headFile.split(' ')[1]; var branchSHA; if (refPath) { var branchPath = path.join(gitPath, refPath.trim()); branchSHA = fs.readFileSync(branchPath); } else { branchSHA = branchName; } output.push(branchSHA.slice(0,10)); } } catch (err) { console.error(err.stack); } return output.join('.'); } else { return packageVersion; } }; }); enifed('container', ['exports', 'container/registry', 'container/container'], function (exports, Registry, Container) { 'use strict'; /* Public api for the container is still in flux. The public api, specified on the application namespace should be considered the stable api. // @module container @private */ /* Flag to enable/disable model factory injections (disabled by default) If model factory injections are enabled, models should not be accessed globally (only through `container.lookupFactory('model:modelName'))`); */ Ember.MODEL_FACTORY_INJECTIONS = false; if (Ember.ENV && typeof Ember.ENV.MODEL_FACTORY_INJECTIONS !== 'undefined') { Ember.MODEL_FACTORY_INJECTIONS = !!Ember.ENV.MODEL_FACTORY_INJECTIONS; } exports.Registry = Registry['default']; exports.Container = Container['default']; }); enifed('container/container', ['exports', 'ember-metal/core', 'ember-metal/keys', 'ember-metal/dictionary'], function (exports, Ember, emberKeys, dictionary) { 'use strict'; var Registry; /** A lightweight container used to instantiate and cache objects. Every `Container` must be associated with a `Registry`, which is referenced to determine the factory and options that should be used to instantiate objects. The public API for `Container` is still in flux and should not be considered stable. @private @class Container */ function Container(registry, options) { this._registry = registry || (function() { // TODO - See note above about transpiler import workaround. if (!Registry) { Registry = requireModule('container/registry')['default']; } return new Registry(); }()); this.cache = dictionary['default'](options && options.cache ? options.cache : null); this.factoryCache = dictionary['default'](options && options.factoryCache ? options.factoryCache : null); this.validationCache = dictionary['default'](options && options.validationCache ? options.validationCache : null); } Container.prototype = { /** @private @property _registry @type Registry */ _registry: null, /** @property cache @type InheritingDict */ cache: null, /** @property factoryCache @type InheritingDict */ factoryCache: null, /** @property validationCache @type InheritingDict */ validationCache: null, /** Given a fullName return a corresponding instance. The default behaviour is for lookup to return a singleton instance. The singleton is scoped to the container, allowing multiple containers to all have their own locally scoped singletons. ```javascript var registry = new Registry(); var container = registry.container(); registry.register('api:twitter', Twitter); var twitter = container.lookup('api:twitter'); twitter instanceof Twitter; // => true // by default the container will return singletons var twitter2 = container.lookup('api:twitter'); twitter2 instanceof Twitter; // => true twitter === twitter2; //=> true ``` If singletons are not wanted an optional flag can be provided at lookup. ```javascript var registry = new Registry(); var container = registry.container(); registry.register('api:twitter', Twitter); var twitter = container.lookup('api:twitter', { singleton: false }); var twitter2 = container.lookup('api:twitter', { singleton: false }); twitter === twitter2; //=> false ``` @method lookup @param {String} fullName @param {Object} options @return {any} */ lookup: function(fullName, options) { return lookup(this, this._registry.normalize(fullName), options); }, /** Given a fullName return the corresponding factory. @method lookupFactory @param {String} fullName @return {any} */ lookupFactory: function(fullName) { return factoryFor(this, this._registry.normalize(fullName)); }, /** A depth first traversal, destroying the container, its descendant containers and all their managed objects. @method destroy */ destroy: function() { eachDestroyable(this, function(item) { if (item.destroy) { item.destroy(); } }); this.isDestroyed = true; }, /** Clear either the entire cache or just the cache for a particular key. @method reset @param {String} fullName optional key to reset; if missing, resets everything */ reset: function(fullName) { if (arguments.length > 0) { resetMember(this, this._registry.normalize(fullName)); } else { resetCache(this); } } }; (function exposeRegistryMethods() { var methods = [ 'register', 'unregister', 'resolve', 'normalize', 'typeInjection', 'injection', 'factoryInjection', 'factoryTypeInjection', 'has', 'options', 'optionsForType' ]; function exposeRegistryMethod(method) { Container.prototype[method] = function() { return this._registry[method].apply(this._registry, arguments); }; } for (var i = 0, l = methods.length; i < l; i++) { exposeRegistryMethod(methods[i]); } })(); function lookup(container, fullName, options) { options = options || {}; if (container.cache[fullName] && options.singleton !== false) { return container.cache[fullName]; } var value = instantiate(container, fullName); if (value === undefined) { return; } if (container._registry.getOption(fullName, 'singleton') !== false && options.singleton !== false) { container.cache[fullName] = value; } return value; } function buildInjections(container) { var hash = {}; if (arguments.length > 1) { var injectionArgs = Array.prototype.slice.call(arguments, 1); var injections = []; var injection; for (var i = 0, l = injectionArgs.length; i < l; i++) { if (injectionArgs[i]) { injections = injections.concat(injectionArgs[i]); } } container._registry.validateInjections(injections); for (i = 0, l = injections.length; i < l; i++) { injection = injections[i]; hash[injection.property] = lookup(container, injection.fullName); } } return hash; } function factoryFor(container, fullName) { var cache = container.factoryCache; if (cache[fullName]) { return cache[fullName]; } var registry = container._registry; var factory = registry.resolve(fullName); if (factory === undefined) { return; } var type = fullName.split(':')[0]; if (!factory || typeof factory.extend !== 'function' || (!Ember['default'].MODEL_FACTORY_INJECTIONS && type === 'model')) { if (factory && typeof factory._onLookup === 'function') { factory._onLookup(fullName); } // TODO: think about a 'safe' merge style extension // for now just fallback to create time injection cache[fullName] = factory; return factory; } else { var injections = injectionsFor(container, fullName); var factoryInjections = factoryInjectionsFor(container, fullName); factoryInjections._toString = registry.makeToString(factory, fullName); var injectedFactory = factory.extend(injections); injectedFactory.reopenClass(factoryInjections); if (factory && typeof factory._onLookup === 'function') { factory._onLookup(fullName); } cache[fullName] = injectedFactory; return injectedFactory; } } function injectionsFor(container, fullName) { var registry = container._registry; var splitName = fullName.split(':'); var type = splitName[0]; var injections = buildInjections(container, registry.getTypeInjections(type), registry.getInjections(fullName)); injections._debugContainerKey = fullName; injections.container = container; return injections; } function factoryInjectionsFor(container, fullName) { var registry = container._registry; var splitName = fullName.split(':'); var type = splitName[0]; var factoryInjections = buildInjections(container, registry.getFactoryTypeInjections(type), registry.getFactoryInjections(fullName)); factoryInjections._debugContainerKey = fullName; return factoryInjections; } function instantiate(container, fullName) { var factory = factoryFor(container, fullName); var lazyInjections, validationCache; if (container._registry.getOption(fullName, 'instantiate') === false) { return factory; } if (factory) { if (typeof factory.create !== 'function') { throw new Error('Failed to create an instance of \'' + fullName + '\'. ' + 'Most likely an improperly defined class or an invalid module export.'); } validationCache = container.validationCache; // Ensure that all lazy injections are valid at instantiation time if (!validationCache[fullName] && typeof factory._lazyInjections === 'function') { lazyInjections = factory._lazyInjections(); lazyInjections = container._registry.normalizeInjectionsHash(lazyInjections); container._registry.validateInjections(lazyInjections); } validationCache[fullName] = true; if (typeof factory.extend === 'function') { // assume the factory was extendable and is already injected return factory.create(); } else { // assume the factory was extendable // to create time injections // TODO: support new'ing for instantiation and merge injections for pure JS Functions return factory.create(injectionsFor(container, fullName)); } } } function eachDestroyable(container, callback) { var cache = container.cache; var keys = emberKeys['default'](cache); var key, value; for (var i = 0, l = keys.length; i < l; i++) { key = keys[i]; value = cache[key]; if (container._registry.getOption(key, 'instantiate') !== false) { callback(value); } } } function resetCache(container) { eachDestroyable(container, function(value) { if (value.destroy) { value.destroy(); } }); container.cache.dict = dictionary['default'](null); } function resetMember(container, fullName) { var member = container.cache[fullName]; delete container.factoryCache[fullName]; if (member) { delete container.cache[fullName]; if (member.destroy) { member.destroy(); } } } exports['default'] = Container; }); enifed('container/registry', ['exports', 'ember-metal/core', 'ember-metal/dictionary', './container'], function (exports, Ember, dictionary, Container) { 'use strict'; var VALID_FULL_NAME_REGEXP = /^[^:]+.+:[^:]+$/; var instanceInitializersFeatureEnabled; /** A lightweight registry used to store factory and option information keyed by type. A `Registry` stores the factory and option information needed by a `Container` to instantiate and cache objects. The public API for `Registry` is still in flux and should not be considered stable. @private @class Registry */ function Registry(options) { this.fallback = options && options.fallback ? options.fallback : null; this.resolver = options && options.resolver ? options.resolver : function() {}; this.registrations = dictionary['default'](options && options.registrations ? options.registrations : null); this._typeInjections = dictionary['default'](null); this._injections = dictionary['default'](null); this._factoryTypeInjections = dictionary['default'](null); this._factoryInjections = dictionary['default'](null); this._normalizeCache = dictionary['default'](null); this._resolveCache = dictionary['default'](null); this._options = dictionary['default'](null); this._typeOptions = dictionary['default'](null); } Registry.prototype = { /** A backup registry for resolving registrations when no matches can be found. @property fallback @type Registry */ fallback: null, /** @property resolver @type function */ resolver: null, /** @property registrations @type InheritingDict */ registrations: null, /** @private @property _typeInjections @type InheritingDict */ _typeInjections: null, /** @private @property _injections @type InheritingDict */ _injections: null, /** @private @property _factoryTypeInjections @type InheritingDict */ _factoryTypeInjections: null, /** @private @property _factoryInjections @type InheritingDict */ _factoryInjections: null, /** @private @property _normalizeCache @type InheritingDict */ _normalizeCache: null, /** @private @property _resolveCache @type InheritingDict */ _resolveCache: null, /** @private @property _options @type InheritingDict */ _options: null, /** @private @property _typeOptions @type InheritingDict */ _typeOptions: null, /** The first container created for this registry. This allows deprecated access to `lookup` and `lookupFactory` to avoid breaking compatibility for Ember 1.x initializers. @private @property _defaultContainer @type Container */ _defaultContainer: null, /** Creates a container based on this registry. @method container @param {Object} options @return {Container} created container */ container: function(options) { var container = new Container['default'](this, options); // 2.0TODO - remove `registerContainer` this.registerContainer(container); return container; }, /** Register the first container created for a registery to allow deprecated access to its `lookup` and `lookupFactory` methods to avoid breaking compatibility for Ember 1.x initializers. 2.0TODO: Remove this method. The bookkeeping is only needed to support deprecated behavior. @param {Container} newly created container */ registerContainer: function(container) { if (!this._defaultContainer) { this._defaultContainer = container; } if (this.fallback) { this.fallback.registerContainer(container); } }, lookup: function(fullName, options) { if (instanceInitializersFeatureEnabled) { } return this._defaultContainer.lookup(fullName, options); }, lookupFactory: function(fullName) { if (instanceInitializersFeatureEnabled) { } return this._defaultContainer.lookupFactory(fullName); }, /** Registers a factory for later injection. Example: ```javascript var registry = new Registry(); registry.register('model:user', Person, {singleton: false }); registry.register('fruit:favorite', Orange); registry.register('communication:main', Email, {singleton: false}); ``` @method register @param {String} fullName @param {Function} factory @param {Object} options */ register: function(fullName, factory, options) { if (factory === undefined) { throw new TypeError('Attempting to register an unknown factory: `' + fullName + '`'); } var normalizedName = this.normalize(fullName); if (this._resolveCache[normalizedName]) { throw new Error('Cannot re-register: `' + fullName +'`, as it has already been resolved.'); } this.registrations[normalizedName] = factory; this._options[normalizedName] = (options || {}); }, /** Unregister a fullName ```javascript var registry = new Registry(); registry.register('model:user', User); registry.resolve('model:user').create() instanceof User //=> true registry.unregister('model:user') registry.resolve('model:user') === undefined //=> true ``` @method unregister @param {String} fullName */ unregister: function(fullName) { var normalizedName = this.normalize(fullName); delete this.registrations[normalizedName]; delete this._resolveCache[normalizedName]; delete this._options[normalizedName]; }, /** Given a fullName return the corresponding factory. By default `resolve` will retrieve the factory from the registry. ```javascript var registry = new Registry(); registry.register('api:twitter', Twitter); registry.resolve('api:twitter') // => Twitter ``` Optionally the registry can be provided with a custom resolver. If provided, `resolve` will first provide the custom resolver the opportunity to resolve the fullName, otherwise it will fallback to the registry. ```javascript var registry = new Registry(); registry.resolver = function(fullName) { // lookup via the module system of choice }; // the twitter factory is added to the module system registry.resolve('api:twitter') // => Twitter ``` @method resolve @param {String} fullName @return {Function} fullName's factory */ resolve: function(fullName) { var factory = resolve(this, this.normalize(fullName)); if (factory === undefined && this.fallback) { factory = this.fallback.resolve(fullName); } return factory; }, /** A hook that can be used to describe how the resolver will attempt to find the factory. For example, the default Ember `.describe` returns the full class name (including namespace) where Ember's resolver expects to find the `fullName`. @method describe @param {String} fullName @return {string} described fullName */ describe: function(fullName) { return fullName; }, /** A hook to enable custom fullName normalization behaviour @method normalizeFullName @param {String} fullName @return {string} normalized fullName */ normalizeFullName: function(fullName) { return fullName; }, /** normalize a fullName based on the applications conventions @method normalize @param {String} fullName @return {string} normalized fullName */ normalize: function(fullName) { return this._normalizeCache[fullName] || ( this._normalizeCache[fullName] = this.normalizeFullName(fullName) ); }, /** @method makeToString @param {any} factory @param {string} fullName @return {function} toString function */ makeToString: function(factory, fullName) { return factory.toString(); }, /** Given a fullName check if the container is aware of its factory or singleton instance. @method has @param {String} fullName @return {Boolean} */ has: function(fullName) { return has(this, this.normalize(fullName)); }, /** Allow registering options for all factories of a type. ```javascript var registry = new Registry(); var container = registry.container(); // if all of type `connection` must not be singletons registry.optionsForType('connection', { singleton: false }); registry.register('connection:twitter', TwitterConnection); registry.register('connection:facebook', FacebookConnection); var twitter = container.lookup('connection:twitter'); var twitter2 = container.lookup('connection:twitter'); twitter === twitter2; // => false var facebook = container.lookup('connection:facebook'); var facebook2 = container.lookup('connection:facebook'); facebook === facebook2; // => false ``` @method optionsForType @param {String} type @param {Object} options */ optionsForType: function(type, options) { this._typeOptions[type] = options; }, getOptionsForType: function(type) { var optionsForType = this._typeOptions[type]; if (optionsForType === undefined && this.fallback) { optionsForType = this.fallback.getOptionsForType(type); } return optionsForType; }, /** @method options @param {String} fullName @param {Object} options */ options: function(fullName, options) { options = options || {}; var normalizedName = this.normalize(fullName); this._options[normalizedName] = options; }, getOptions: function(fullName) { var normalizedName = this.normalize(fullName); var options = this._options[normalizedName]; if (options === undefined && this.fallback) { options = this.fallback.getOptions(fullName); } return options; }, getOption: function(fullName, optionName) { var options = this._options[fullName]; if (options && options[optionName] !== undefined) { return options[optionName]; } var type = fullName.split(':')[0]; options = this._typeOptions[type]; if (options && options[optionName] !== undefined) { return options[optionName]; } else if (this.fallback) { return this.fallback.getOption(fullName, optionName); } }, option: function(fullName, optionName) { return this.getOption(fullName, optionName); }, /** Used only via `injection`. Provides a specialized form of injection, specifically enabling all objects of one type to be injected with a reference to another object. For example, provided each object of type `controller` needed a `router`. one would do the following: ```javascript var registry = new Registry(); var container = registry.container(); registry.register('router:main', Router); registry.register('controller:user', UserController); registry.register('controller:post', PostController); registry.typeInjection('controller', 'router', 'router:main'); var user = container.lookup('controller:user'); var post = container.lookup('controller:post'); user.router instanceof Router; //=> true post.router instanceof Router; //=> true // both controllers share the same router user.router === post.router; //=> true ``` @private @method typeInjection @param {String} type @param {String} property @param {String} fullName */ typeInjection: function(type, property, fullName) { var fullNameType = fullName.split(':')[0]; if (fullNameType === type) { throw new Error('Cannot inject a `' + fullName + '` on other ' + type + '(s).'); } var injections = this._typeInjections[type] || (this._typeInjections[type] = []); injections.push({ property: property, fullName: fullName }); }, /** Defines injection rules. These rules are used to inject dependencies onto objects when they are instantiated. Two forms of injections are possible: * Injecting one fullName on another fullName * Injecting one fullName on a type Example: ```javascript var registry = new Registry(); var container = registry.container(); registry.register('source:main', Source); registry.register('model:user', User); registry.register('model:post', Post); // injecting one fullName on another fullName // eg. each user model gets a post model registry.injection('model:user', 'post', 'model:post'); // injecting one fullName on another type registry.injection('model', 'source', 'source:main'); var user = container.lookup('model:user'); var post = container.lookup('model:post'); user.source instanceof Source; //=> true post.source instanceof Source; //=> true user.post instanceof Post; //=> true // and both models share the same source user.source === post.source; //=> true ``` @method injection @param {String} factoryName @param {String} property @param {String} injectionName */ injection: function(fullName, property, injectionName) { this.validateFullName(injectionName); var normalizedInjectionName = this.normalize(injectionName); if (fullName.indexOf(':') === -1) { return this.typeInjection(fullName, property, normalizedInjectionName); } var normalizedName = this.normalize(fullName); var injections = this._injections[normalizedName] || (this._injections[normalizedName] = []); injections.push({ property: property, fullName: normalizedInjectionName }); }, /** Used only via `factoryInjection`. Provides a specialized form of injection, specifically enabling all factory of one type to be injected with a reference to another object. For example, provided each factory of type `model` needed a `store`. one would do the following: ```javascript var registry = new Registry(); registry.register('store:main', SomeStore); registry.factoryTypeInjection('model', 'store', 'store:main'); var store = registry.lookup('store:main'); var UserFactory = registry.lookupFactory('model:user'); UserFactory.store instanceof SomeStore; //=> true ``` @private @method factoryTypeInjection @param {String} type @param {String} property @param {String} fullName */ factoryTypeInjection: function(type, property, fullName) { var injections = this._factoryTypeInjections[type] || (this._factoryTypeInjections[type] = []); injections.push({ property: property, fullName: this.normalize(fullName) }); }, /** Defines factory injection rules. Similar to regular injection rules, but are run against factories, via `Registry#lookupFactory`. These rules are used to inject objects onto factories when they are looked up. Two forms of injections are possible: * Injecting one fullName on another fullName * Injecting one fullName on a type Example: ```javascript var registry = new Registry(); var container = registry.container(); registry.register('store:main', Store); registry.register('store:secondary', OtherStore); registry.register('model:user', User); registry.register('model:post', Post); // injecting one fullName on another type registry.factoryInjection('model', 'store', 'store:main'); // injecting one fullName on another fullName registry.factoryInjection('model:post', 'secondaryStore', 'store:secondary'); var UserFactory = container.lookupFactory('model:user'); var PostFactory = container.lookupFactory('model:post'); var store = container.lookup('store:main'); UserFactory.store instanceof Store; //=> true UserFactory.secondaryStore instanceof OtherStore; //=> false PostFactory.store instanceof Store; //=> true PostFactory.secondaryStore instanceof OtherStore; //=> true // and both models share the same source instance UserFactory.store === PostFactory.store; //=> true ``` @method factoryInjection @param {String} factoryName @param {String} property @param {String} injectionName */ factoryInjection: function(fullName, property, injectionName) { var normalizedName = this.normalize(fullName); var normalizedInjectionName = this.normalize(injectionName); this.validateFullName(injectionName); if (fullName.indexOf(':') === -1) { return this.factoryTypeInjection(normalizedName, property, normalizedInjectionName); } var injections = this._factoryInjections[normalizedName] || (this._factoryInjections[normalizedName] = []); injections.push({ property: property, fullName: normalizedInjectionName }); }, validateFullName: function(fullName) { if (!VALID_FULL_NAME_REGEXP.test(fullName)) { throw new TypeError('Invalid Fullname, expected: `type:name` got: ' + fullName); } return true; }, validateInjections: function(injections) { if (!injections) { return; } var fullName; for (var i = 0, length = injections.length; i < length; i++) { fullName = injections[i].fullName; if (!this.has(fullName)) { throw new Error('Attempting to inject an unknown injection: `' + fullName + '`'); } } }, normalizeInjectionsHash: function(hash) { var injections = []; for (var key in hash) { if (hash.hasOwnProperty(key)) { injections.push({ property: key, fullName: hash[key] }); } } return injections; }, getInjections: function(fullName) { var injections = this._injections[fullName] || []; if (this.fallback) { injections = injections.concat(this.fallback.getInjections(fullName)); } return injections; }, getTypeInjections: function(type) { var injections = this._typeInjections[type] || []; if (this.fallback) { injections = injections.concat(this.fallback.getTypeInjections(type)); } return injections; }, getFactoryInjections: function(fullName) { var injections = this._factoryInjections[fullName] || []; if (this.fallback) { injections = injections.concat(this.fallback.getFactoryInjections(fullName)); } return injections; }, getFactoryTypeInjections: function(type) { var injections = this._factoryTypeInjections[type] || []; if (this.fallback) { injections = injections.concat(this.fallback.getFactoryTypeInjections(type)); } return injections; } }; function resolve(registry, normalizedName) { var cached = registry._resolveCache[normalizedName]; if (cached) { return cached; } var resolved = registry.resolver(normalizedName) || registry.registrations[normalizedName]; registry._resolveCache[normalizedName] = resolved; return resolved; } function has(registry, fullName) { return registry.resolve(fullName) !== undefined; } exports['default'] = Registry; }); enifed("dag-map", ["exports"], function(__exports__) { "use strict"; function visit(vertex, fn, visited, path) { var name = vertex.name; var vertices = vertex.incoming; var names = vertex.incomingNames; var len = names.length; var i; if (!visited) { visited = {}; } if (!path) { path = []; } if (visited.hasOwnProperty(name)) { return; } path.push(name); visited[name] = true; for (i = 0; i < len; i++) { visit(vertices[names[i]], fn, visited, path); } fn(vertex, path); path.pop(); } /** * DAG stands for Directed acyclic graph. * * It is used to build a graph of dependencies checking that there isn't circular * dependencies. p.e Registering initializers with a certain precedence order. * * @class DAG * @constructor */ function DAG() { this.names = []; this.vertices = Object.create(null); } /** * DAG Vertex * * @class Vertex * @constructor */ function Vertex(name) { this.name = name; this.incoming = {}; this.incomingNames = []; this.hasOutgoing = false; this.value = null; } /** * Adds a vertex entry to the graph unless it is already added. * * @private * @method add * @param {String} name The name of the vertex to add */ DAG.prototype.add = function(name) { if (!name) { throw new Error("Can't add Vertex without name"); } if (this.vertices[name] !== undefined) { return this.vertices[name]; } var vertex = new Vertex(name); this.vertices[name] = vertex; this.names.push(name); return vertex; }; /** * Adds a vertex to the graph and sets its value. * * @private * @method map * @param {String} name The name of the vertex. * @param value The value to put in the vertex. */ DAG.prototype.map = function(name, value) { this.add(name).value = value; }; /** * Connects the vertices with the given names, adding them to the graph if * necessary, only if this does not produce is any circular dependency. * * @private * @method addEdge * @param {String} fromName The name the vertex where the edge starts. * @param {String} toName The name the vertex where the edge ends. */ DAG.prototype.addEdge = function(fromName, toName) { if (!fromName || !toName || fromName === toName) { return; } var from = this.add(fromName); var to = this.add(toName); if (to.incoming.hasOwnProperty(fromName)) { return; } function checkCycle(vertex, path) { if (vertex.name === toName) { throw new Error("cycle detected: " + toName + " <- " + path.join(" <- ")); } } visit(from, checkCycle); from.hasOutgoing = true; to.incoming[fromName] = from; to.incomingNames.push(fromName); }; /** * Visits all the vertex of the graph calling the given function with each one, * ensuring that the vertices are visited respecting their precedence. * * @method topsort * @param {Function} fn The function to be invoked on each vertex. */ DAG.prototype.topsort = function(fn) { var visited = {}; var vertices = this.vertices; var names = this.names; var len = names.length; var i, vertex; for (i = 0; i < len; i++) { vertex = vertices[names[i]]; if (!vertex.hasOutgoing) { visit(vertex, fn, visited); } } }; /** * Adds a vertex with the given name and value to the graph and joins it with the * vertices referenced in _before_ and _after_. If there isn't vertices with those * names, they are added too. * * If either _before_ or _after_ are falsy/empty, the added vertex will not have * an incoming/outgoing edge. * * @method addEdges * @param {String} name The name of the vertex to be added. * @param value The value of that vertex. * @param before An string or array of strings with the names of the vertices before * which this vertex must be visited. * @param after An string or array of strings with the names of the vertex after * which this vertex must be visited. * */ DAG.prototype.addEdges = function(name, value, before, after) { var i; this.map(name, value); if (before) { if (typeof before === 'string') { this.addEdge(name, before); } else { for (i = 0; i < before.length; i++) { this.addEdge(name, before[i]); } } } if (after) { if (typeof after === 'string') { this.addEdge(after, name); } else { for (i = 0; i < after.length; i++) { this.addEdge(after[i], name); } } } }; __exports__["default"] = DAG; }); enifed("dag-map.umd", ["./dag-map"], function(__dependency1__) { "use strict"; var DAG = __dependency1__["default"]; /* global define:true module:true window: true */ if (typeof enifed === 'function' && enifed.amd) { enifed(function() { return DAG; }); } else if (typeof module !== 'undefined' && module.exports) { module.exports = DAG; } else if (typeof this !== 'undefined') { this['DAG'] = DAG; } }); enifed("dom-helper", ["./morph-range","./morph-attr","./dom-helper/build-html-dom","./dom-helper/classes","./dom-helper/prop","exports"], function(__dependency1__, __dependency2__, __dependency3__, __dependency4__, __dependency5__, __exports__) { "use strict"; var Morph = __dependency1__["default"]; var AttrMorph = __dependency2__["default"]; var buildHTMLDOM = __dependency3__.buildHTMLDOM; var svgNamespace = __dependency3__.svgNamespace; var svgHTMLIntegrationPoints = __dependency3__.svgHTMLIntegrationPoints; var addClasses = __dependency4__.addClasses; var removeClasses = __dependency4__.removeClasses; var normalizeProperty = __dependency5__.normalizeProperty; var isAttrRemovalValue = __dependency5__.isAttrRemovalValue; var doc = typeof document === 'undefined' ? false : document; var deletesBlankTextNodes = doc && (function(document){ var element = document.createElement('div'); element.appendChild( document.createTextNode('') ); var clonedElement = element.cloneNode(true); return clonedElement.childNodes.length === 0; })(doc); var ignoresCheckedAttribute = doc && (function(document){ var element = document.createElement('input'); element.setAttribute('checked', 'checked'); var clonedElement = element.cloneNode(false); return !clonedElement.checked; })(doc); var canRemoveSvgViewBoxAttribute = doc && (doc.createElementNS ? (function(document){ var element = document.createElementNS(svgNamespace, 'svg'); element.setAttribute('viewBox', '0 0 100 100'); element.removeAttribute('viewBox'); return !element.getAttribute('viewBox'); })(doc) : true); var canClone = doc && (function(document){ var element = document.createElement('div'); element.appendChild( document.createTextNode(' ')); element.appendChild( document.createTextNode(' ')); var clonedElement = element.cloneNode(true); return clonedElement.childNodes[0].nodeValue === ' '; })(doc); // This is not the namespace of the element, but of // the elements inside that elements. function interiorNamespace(element){ if ( element && element.namespaceURI === svgNamespace && !svgHTMLIntegrationPoints[element.tagName] ) { return svgNamespace; } else { return null; } } // The HTML spec allows for "omitted start tags". These tags are optional // when their intended child is the first thing in the parent tag. For // example, this is a tbody start tag: // // // // // // The tbody may be omitted, and the browser will accept and render: // //
// // // However, the omitted start tag will still be added to the DOM. Here // we test the string and context to see if the browser is about to // perform this cleanup. // // http://www.whatwg.org/specs/web-apps/current-work/multipage/syntax.html#optional-tags // describes which tags are omittable. The spec for tbody and colgroup // explains this behavior: // // http://www.whatwg.org/specs/web-apps/current-work/multipage/tables.html#the-tbody-element // http://www.whatwg.org/specs/web-apps/current-work/multipage/tables.html#the-colgroup-element // var omittedStartTagChildTest = /<([\w:]+)/; function detectOmittedStartTag(string, contextualElement){ // Omitted start tags are only inside table tags. if (contextualElement.tagName === 'TABLE') { var omittedStartTagChildMatch = omittedStartTagChildTest.exec(string); if (omittedStartTagChildMatch) { var omittedStartTagChild = omittedStartTagChildMatch[1]; // It is already asserted that the contextual element is a table // and not the proper start tag. Just see if a tag was omitted. return omittedStartTagChild === 'tr' || omittedStartTagChild === 'col'; } } } function buildSVGDOM(html, dom){ var div = dom.document.createElement('div'); div.innerHTML = ''+html+''; return div.firstChild.childNodes; } /* * A class wrapping DOM functions to address environment compatibility, * namespaces, contextual elements for morph un-escaped content * insertion. * * When entering a template, a DOMHelper should be passed: * * template(context, { hooks: hooks, dom: new DOMHelper() }); * * TODO: support foreignObject as a passed contextual element. It has * a namespace (svg) that does not match its internal namespace * (xhtml). * * @class DOMHelper * @constructor * @param {HTMLDocument} _document The document DOM methods are proxied to */ function DOMHelper(_document){ this.document = _document || document; if (!this.document) { throw new Error("A document object must be passed to the DOMHelper, or available on the global scope"); } this.canClone = canClone; this.namespace = null; } var prototype = DOMHelper.prototype; prototype.constructor = DOMHelper; prototype.getElementById = function(id, rootNode) { rootNode = rootNode || this.document; return rootNode.getElementById(id); }; prototype.insertBefore = function(element, childElement, referenceChild) { return element.insertBefore(childElement, referenceChild); }; prototype.appendChild = function(element, childElement) { return element.appendChild(childElement); }; prototype.childAt = function(element, indices) { var child = element; for (var i = 0; i < indices.length; i++) { child = child.childNodes.item(indices[i]); } return child; }; // Note to a Fellow Implementor: // Ahh, accessing a child node at an index. Seems like it should be so simple, // doesn't it? Unfortunately, this particular method has caused us a surprising // amount of pain. As you'll note below, this method has been modified to walk // the linked list of child nodes rather than access the child by index // directly, even though there are two (2) APIs in the DOM that do this for us. // If you're thinking to yourself, "What an oversight! What an opportunity to // optimize this code!" then to you I say: stop! For I have a tale to tell. // // First, this code must be compatible with simple-dom for rendering on the // server where there is no real DOM. Previously, we accessed a child node // directly via `element.childNodes[index]`. While we *could* in theory do a // full-fidelity simulation of a live `childNodes` array, this is slow, // complicated and error-prone. // // "No problem," we thought, "we'll just use the similar // `childNodes.item(index)` API." Then, we could just implement our own `item` // method in simple-dom and walk the child node linked list there, allowing // us to retain the performance advantages of the (surely optimized) `item()` // API in the browser. // // Unfortunately, an enterprising soul named Samy Alzahrani discovered that in // IE8, accessing an item out-of-bounds via `item()` causes an exception where // other browsers return null. This necessitated a... check of // `childNodes.length`, bringing us back around to having to support a // full-fidelity `childNodes` array! // // Worst of all, Kris Selden investigated how browsers are actualy implemented // and discovered that they're all linked lists under the hood anyway. Accessing // `childNodes` requires them to allocate a new live collection backed by that // linked list, which is itself a rather expensive operation. Our assumed // optimization had backfired! That is the danger of magical thinking about // the performance of native implementations. // // And this, my friends, is why the following implementation just walks the // linked list, as surprised as that may make you. Please ensure you understand // the above before changing this and submitting a PR. // // Tom Dale, January 18th, 2015, Portland OR prototype.childAtIndex = function(element, index) { var node = element.firstChild; for (var idx = 0; node && idx < index; idx++) { node = node.nextSibling; } return node; }; prototype.appendText = function(element, text) { return element.appendChild(this.document.createTextNode(text)); }; prototype.setAttribute = function(element, name, value) { element.setAttribute(name, String(value)); }; prototype.setAttributeNS = function(element, namespace, name, value) { element.setAttributeNS(namespace, name, String(value)); }; if (canRemoveSvgViewBoxAttribute){ prototype.removeAttribute = function(element, name) { element.removeAttribute(name); }; } else { prototype.removeAttribute = function(element, name) { if (element.tagName === 'svg' && name === 'viewBox') { element.setAttribute(name, null); } else { element.removeAttribute(name); } }; } prototype.setPropertyStrict = function(element, name, value) { element[name] = value; }; prototype.setProperty = function(element, name, value, namespace) { var lowercaseName = name.toLowerCase(); if (element.namespaceURI === svgNamespace || lowercaseName === 'style') { if (isAttrRemovalValue(value)) { element.removeAttribute(name); } else { if (namespace) { element.setAttributeNS(namespace, name, value); } else { element.setAttribute(name, value); } } } else { var normalized = normalizeProperty(element, name); if (normalized) { element[normalized] = value; } else { if (isAttrRemovalValue(value)) { element.removeAttribute(name); } else { if (namespace && element.setAttributeNS) { element.setAttributeNS(namespace, name, value); } else { element.setAttribute(name, value); } } } } }; if (doc && doc.createElementNS) { // Only opt into namespace detection if a contextualElement // is passed. prototype.createElement = function(tagName, contextualElement) { var namespace = this.namespace; if (contextualElement) { if (tagName === 'svg') { namespace = svgNamespace; } else { namespace = interiorNamespace(contextualElement); } } if (namespace) { return this.document.createElementNS(namespace, tagName); } else { return this.document.createElement(tagName); } }; prototype.setAttributeNS = function(element, namespace, name, value) { element.setAttributeNS(namespace, name, String(value)); }; } else { prototype.createElement = function(tagName) { return this.document.createElement(tagName); }; prototype.setAttributeNS = function(element, namespace, name, value) { element.setAttribute(name, String(value)); }; } prototype.addClasses = addClasses; prototype.removeClasses = removeClasses; prototype.setNamespace = function(ns) { this.namespace = ns; }; prototype.detectNamespace = function(element) { this.namespace = interiorNamespace(element); }; prototype.createDocumentFragment = function(){ return this.document.createDocumentFragment(); }; prototype.createTextNode = function(text){ return this.document.createTextNode(text); }; prototype.createComment = function(text){ return this.document.createComment(text); }; prototype.repairClonedNode = function(element, blankChildTextNodes, isChecked){ if (deletesBlankTextNodes && blankChildTextNodes.length > 0) { for (var i=0, len=blankChildTextNodes.length;i 0) { var currentNode = childNodes[0]; // We prepend an