From 8cb0d98cb8cae5f8c3dcf4c0c592c6ebc934de69 Mon Sep 17 00:00:00 2001 From: Darren Date: Sat, 3 Nov 2012 20:09:49 +0000 Subject: [PATCH] Client: backbone/jquery/underscore files updated --- client/assets/backbone-git.js | 1260 ----------------------------- client/assets/backbone.min.js | 38 + client/assets/jquery-1.7.1.min.js | 4 - client/assets/jquery-1.8.2.min.js | 2 + client/assets/underscore-min.js | 31 - client/assets/underscore.min.js | 5 + client/index.html | 6 +- 7 files changed, 48 insertions(+), 1298 deletions(-) delete mode 100644 client/assets/backbone-git.js create mode 100644 client/assets/backbone.min.js delete mode 100644 client/assets/jquery-1.7.1.min.js create mode 100644 client/assets/jquery-1.8.2.min.js delete mode 100644 client/assets/underscore-min.js create mode 100644 client/assets/underscore.min.js diff --git a/client/assets/backbone-git.js b/client/assets/backbone-git.js deleted file mode 100644 index 80c1fc3..0000000 --- a/client/assets/backbone-git.js +++ /dev/null @@ -1,1260 +0,0 @@ -// Backbone.js 0.5.3 -// (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc. -// Backbone may be freely distributed under the MIT license. -// For all details and documentation: -// http://backbonejs.org - -(function(){ - - // Initial Setup - // ------------- - - // Save a reference to the global object (`window` in the browser, `global` - // on the server). - var root = this; - - // Save the previous value of the `Backbone` variable, so that it can be - // restored later on, if `noConflict` is used. - var previousBackbone = root.Backbone; - - // Create a local reference to slice/splice. - var slice = Array.prototype.slice; - var splice = Array.prototype.splice; - - // The top-level namespace. All public Backbone classes and modules will - // be attached to this. Exported for both CommonJS and the browser. - var Backbone; - if (typeof exports !== 'undefined') { - Backbone = exports; - } else { - Backbone = root.Backbone = {}; - } - - // Current version of the library. Keep in sync with `package.json`. - Backbone.VERSION = '0.5.3'; - - // Require Underscore, if we're on the server, and it's not already present. - var _ = root._; - if (!_ && (typeof require !== 'undefined')) _ = require('underscore'); - - // For Backbone's purposes, jQuery, Zepto, or Ender owns the `$` variable. - var $ = root.jQuery || root.Zepto || root.ender; - - // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable - // to its previous owner. Returns a reference to this Backbone object. - Backbone.noConflict = function() { - root.Backbone = previousBackbone; - return this; - }; - - // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option - // will fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and - // set a `X-Http-Method-Override` header. - Backbone.emulateHTTP = false; - - // Turn on `emulateJSON` to support legacy servers that can't deal with direct - // `application/json` requests ... will encode the body as - // `application/x-www-form-urlencoded` instead and will send the model in a - // form param named `model`. - Backbone.emulateJSON = false; - - // Backbone.Events - // ----------------- - - // A module that can be mixed in to *any object* in order to provide it with - // custom events. You may bind with `on` or remove with `off` callback functions - // to an event; trigger`-ing an event fires all callbacks in succession. - // - // var object = {}; - // _.extend(object, Backbone.Events); - // object.on('expand', function(){ alert('expanded'); }); - // object.trigger('expand'); - // - Backbone.Events = { - - // Bind an event, specified by a string name, `ev`, to a `callback` - // function. Passing `"all"` will bind the callback to all events fired. - on: function(events, callback, context) { - var ev; - events = events.split(/\s+/); - var calls = this._callbacks || (this._callbacks = {}); - while (ev = events.shift()) { - // Create an immutable callback list, allowing traversal during - // modification. The tail is an empty object that will always be used - // as the next node. - var list = calls[ev] || (calls[ev] = {}); - var tail = list.tail || (list.tail = list.next = {}); - tail.callback = callback; - tail.context = context; - list.tail = tail.next = {}; - } - return this; - }, - - // Remove one or many callbacks. If `context` is null, removes all callbacks - // with that function. If `callback` is null, removes all callbacks for the - // event. If `ev` is null, removes all bound callbacks for all events. - off: function(events, callback, context) { - var ev, calls, node; - if (!events) { - delete this._callbacks; - } else if (calls = this._callbacks) { - events = events.split(/\s+/); - while (ev = events.shift()) { - node = calls[ev]; - delete calls[ev]; - if (!callback || !node) continue; - // Create a new list, omitting the indicated event/context pairs. - while ((node = node.next) && node.next) { - if (node.callback === callback && - (!context || node.context === context)) continue; - this.on(ev, node.callback, node.context); - } - } - } - return this; - }, - - // Trigger an event, firing all bound callbacks. Callbacks are passed the - // same arguments as `trigger` is, apart from the event name. - // Listening for `"all"` passes the true event name as the first argument. - trigger: function(events) { - var event, node, calls, tail, args, all, rest; - if (!(calls = this._callbacks)) return this; - all = calls['all']; - (events = events.split(/\s+/)).push(null); - // Save references to the current heads & tails. - while (event = events.shift()) { - if (all) events.push({next: all.next, tail: all.tail, event: event}); - if (!(node = calls[event])) continue; - events.push({next: node.next, tail: node.tail}); - } - // Traverse each list, stopping when the saved tail is reached. - rest = slice.call(arguments, 1); - while (node = events.pop()) { - tail = node.tail; - args = node.event ? [node.event].concat(rest) : rest; - while ((node = node.next) !== tail) { - node.callback.apply(node.context || this, args); - } - } - return this; - } - - }; - - // Aliases for backwards compatibility. - Backbone.Events.bind = Backbone.Events.on; - Backbone.Events.unbind = Backbone.Events.off; - - // Backbone.Model - // -------------- - - // Create a new model, with defined attributes. A client id (`cid`) - // is automatically generated and assigned for you. - Backbone.Model = function(attributes, options) { - var defaults; - attributes || (attributes = {}); - if (options && options.parse) attributes = this.parse(attributes); - if (defaults = getValue(this, 'defaults')) { - attributes = _.extend({}, defaults, attributes); - } - if (options && options.collection) this.collection = options.collection; - this.attributes = {}; - this._escapedAttributes = {}; - this.cid = _.uniqueId('c'); - if (!this.set(attributes, {silent: true})) { - throw new Error("Can't create an invalid model"); - } - this._changed = false; - this._previousAttributes = _.clone(this.attributes); - this.initialize.apply(this, arguments); - }; - - // Attach all inheritable methods to the Model prototype. - _.extend(Backbone.Model.prototype, Backbone.Events, { - - // Has the item been changed since the last `"change"` event? - _changed: false, - - // The default name for the JSON `id` attribute is `"id"`. MongoDB and - // CouchDB users may want to set this to `"_id"`. - idAttribute: 'id', - - // Initialize is an empty function by default. Override it with your own - // initialization logic. - initialize: function(){}, - - // Return a copy of the model's `attributes` object. - toJSON: function() { - return _.clone(this.attributes); - }, - - // Get the value of an attribute. - get: function(attr) { - return this.attributes[attr]; - }, - - // Get the HTML-escaped value of an attribute. - escape: function(attr) { - var html; - if (html = this._escapedAttributes[attr]) return html; - var val = this.attributes[attr]; - return this._escapedAttributes[attr] = _.escape(val == null ? '' : '' + val); - }, - - // Returns `true` if the attribute contains a value that is not null - // or undefined. - has: function(attr) { - return this.attributes[attr] != null; - }, - - // Set a hash of model attributes on the object, firing `"change"` unless - // you choose to silence it. - set: function(key, value, options) { - var attrs, attr, val; - if (_.isObject(key) || key == null) { - attrs = key; - options = value; - } else { - attrs = {}; - attrs[key] = value; - } - - // Extract attributes and options. - options || (options = {}); - if (!attrs) return this; - if (attrs instanceof Backbone.Model) attrs = attrs.attributes; - if (options.unset) for (var attr in attrs) attrs[attr] = void 0; - var now = this.attributes, escaped = this._escapedAttributes; - - // Run validation. - if (this.validate && !this._performValidation(attrs, options)) return false; - - // Check for changes of `id`. - if (this.idAttribute in attrs) this.id = attrs[this.idAttribute]; - - // We're about to start triggering change events. - var alreadyChanging = this._changing; - this._changing = true; - - // Update attributes. - var changes = {}; - for (attr in attrs) { - val = attrs[attr]; - if (!_.isEqual(now[attr], val) || (options.unset && (attr in now))) { - delete escaped[attr]; - this._changed = true; - changes[attr] = val; - } - options.unset ? delete now[attr] : now[attr] = val; - } - - // Fire `change:attribute` events. - for (var attr in changes) { - if (!options.silent) this.trigger('change:' + attr, this, changes[attr], options); - } - - // Fire the `"change"` event, if the model has been changed. - if (!alreadyChanging) { - if (!options.silent && this._changed) this.change(options); - this._changing = false; - } - return this; - }, - - // Remove an attribute from the model, firing `"change"` unless you choose - // to silence it. `unset` is a noop if the attribute doesn't exist. - unset: function(attr, options) { - (options || (options = {})).unset = true; - return this.set(attr, null, options); - }, - - // Clear all attributes on the model, firing `"change"` unless you choose - // to silence it. - clear: function(options) { - (options || (options = {})).unset = true; - return this.set(_.clone(this.attributes), options); - }, - - // Fetch the model from the server. If the server's representation of the - // model differs from its current attributes, they will be overriden, - // triggering a `"change"` event. - fetch: function(options) { - options = options ? _.clone(options) : {}; - var model = this; - var success = options.success; - options.success = function(resp, status, xhr) { - if (!model.set(model.parse(resp, xhr), options)) return false; - if (success) success(model, resp); - }; - options.error = Backbone.wrapError(options.error, model, options); - return (this.sync || Backbone.sync).call(this, 'read', this, options); - }, - - // Set a hash of model attributes, and sync the model to the server. - // If the server returns an attributes hash that differs, the model's - // state will be `set` again. - save: function(key, value, options) { - var attrs; - if (_.isObject(key) || key == null) { - attrs = key; - options = value; - } else { - attrs = {}; - attrs[key] = value; - } - - options = options ? _.clone(options) : {}; - if (attrs && !this[options.wait ? '_performValidation' : 'set'](attrs, options)) return false; - var model = this; - var success = options.success; - options.success = function(resp, status, xhr) { - var serverAttrs = model.parse(resp, xhr); - if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs); - if (!model.set(serverAttrs, options)) return false; - if (success) { - success(model, resp); - } else { - model.trigger('sync', model, resp, options); - } - }; - options.error = Backbone.wrapError(options.error, model, options); - var method = this.isNew() ? 'create' : 'update'; - return (this.sync || Backbone.sync).call(this, method, this, options); - }, - - // Destroy this model on the server if it was already persisted. - // Optimistically removes the model from its collection, if it has one. - // If `wait: true` is passed, waits for the server to respond before removal. - destroy: function(options) { - options = options ? _.clone(options) : {}; - var model = this; - var success = options.success; - - var triggerDestroy = function() { - model.trigger('destroy', model, model.collection, options); - }; - - if (this.isNew()) return triggerDestroy(); - options.success = function(resp) { - if (options.wait) triggerDestroy(); - if (success) { - success(model, resp); - } else { - model.trigger('sync', model, resp, options); - } - }; - options.error = Backbone.wrapError(options.error, model, options); - var xhr = (this.sync || Backbone.sync).call(this, 'delete', this, options); - if (!options.wait) triggerDestroy(); - return xhr; - }, - - // Default URL for the model's representation on the server -- if you're - // using Backbone's restful methods, override this to change the endpoint - // that will be called. - url: function() { - var base = getValue(this.collection, 'url') || getValue(this, 'urlRoot') || urlError(); - if (this.isNew()) return base; - return base + (base.charAt(base.length - 1) == '/' ? '' : '/') + encodeURIComponent(this.id); - }, - - // **parse** converts a response into the hash of attributes to be `set` on - // the model. The default implementation is just to pass the response along. - parse: function(resp, xhr) { - return resp; - }, - - // Create a new model with identical attributes to this one. - clone: function() { - return new this.constructor(this.attributes); - }, - - // A model is new if it has never been saved to the server, and lacks an id. - isNew: function() { - return this.id == null; - }, - - // Call this method to manually fire a `change` event for this model. - // Calling this will cause all objects observing the model to update. - change: function(options) { - this.trigger('change', this, options); - this._previousAttributes = _.clone(this.attributes); - this._changed = false; - }, - - // Determine if the model has changed since the last `"change"` event. - // If you specify an attribute name, determine if that attribute has changed. - hasChanged: function(attr) { - if (attr) return !_.isEqual(this._previousAttributes[attr], this.attributes[attr]); - return this._changed; - }, - - // Return an object containing all the attributes that have changed, or - // false if there are no changed attributes. Useful for determining what - // parts of a view need to be updated and/or what attributes need to be - // persisted to the server. Unset attributes will be set to undefined. - changedAttributes: function(now) { - if (!this._changed) return false; - now || (now = this.attributes); - var changed = false, old = this._previousAttributes; - for (var attr in now) { - if (_.isEqual(old[attr], now[attr])) continue; - (changed || (changed = {}))[attr] = now[attr]; - } - for (var attr in old) { - if (!(attr in now)) (changed || (changed = {}))[attr] = void 0; - } - return changed; - }, - - // Get the previous value of an attribute, recorded at the time the last - // `"change"` event was fired. - previous: function(attr) { - if (!attr || !this._previousAttributes) return null; - return this._previousAttributes[attr]; - }, - - // Get all of the attributes of the model at the time of the previous - // `"change"` event. - previousAttributes: function() { - return _.clone(this._previousAttributes); - }, - - // Run validation against a set of incoming attributes, returning `true` - // if all is well. If a specific `error` callback has been passed, - // call that instead of firing the general `"error"` event. - _performValidation: function(attrs, options) { - var newAttrs = _.extend({}, this.attributes, attrs); - var error = this.validate(newAttrs, options); - if (error) { - if (options.error) { - options.error(this, error, options); - } else { - this.trigger('error', this, error, options); - } - return false; - } - return true; - } - - }); - - // Backbone.Collection - // ------------------- - - // Provides a standard collection class for our sets of models, ordered - // or unordered. If a `comparator` is specified, the Collection will maintain - // its models in sort order, as they're added and removed. - Backbone.Collection = function(models, options) { - options || (options = {}); - if (options.comparator) this.comparator = options.comparator; - this._reset(); - this.initialize.apply(this, arguments); - if (models) this.reset(models, {silent: true, parse: options.parse}); - }; - - // Define the Collection's inheritable methods. - _.extend(Backbone.Collection.prototype, Backbone.Events, { - - // The default model for a collection is just a **Backbone.Model**. - // This should be overridden in most cases. - model: Backbone.Model, - - // Initialize is an empty function by default. Override it with your own - // initialization logic. - initialize: function(){}, - - // The JSON representation of a Collection is an array of the - // models' attributes. - toJSON: function() { - return this.map(function(model){ return model.toJSON(); }); - }, - - // Add a model, or list of models to the set. Pass **silent** to avoid - // firing the `add` event for every new model. - add: function(models, options) { - var i, index, length, model, cids = {}; - options || (options = {}); - models = _.isArray(models) ? models.slice() : [models]; - - // Begin by turning bare objects into model references, and preventing - // invalid models or duplicate models from being added. - for (i = 0, length = models.length; i < length; i++) { - if (!(model = models[i] = this._prepareModel(models[i], options))) { - throw new Error("Can't add an invalid model to a collection"); - } - var hasId = model.id != null; - if (this._byCid[model.cid] || (hasId && this._byId[model.id])) { - throw new Error("Can't add the same model to a collection twice"); - } - } - - // Listen to added models' events, and index models for lookup by - // `id` and by `cid`. - for (i = 0; i < length; i++) { - (model = models[i]).on('all', this._onModelEvent, this); - this._byCid[model.cid] = model; - if (model.id != null) this._byId[model.id] = model; - cids[model.cid] = true; - } - - // Insert models into the collection, re-sorting if needed, and triggering - // `add` events unless silenced. - this.length += length; - index = options.at != null ? options.at : this.models.length; - splice.apply(this.models, [index, 0].concat(models)); - if (this.comparator) this.sort({silent: true}); - if (options.silent) return this; - for (i = 0, length = this.models.length; i < length; i++) { - if (!cids[(model = this.models[i]).cid]) continue; - options.index = i; - model.trigger('add', model, this, options); - } - return this; - }, - - // Remove a model, or a list of models from the set. Pass silent to avoid - // firing the `remove` event for every model removed. - remove: function(models, options) { - var i, l, index, model; - options || (options = {}); - models = _.isArray(models) ? models.slice() : [models]; - for (i = 0, l = models.length; i < l; i++) { - model = this.getByCid(models[i]) || this.get(models[i]); - if (!model) continue; - delete this._byId[model.id]; - delete this._byCid[model.cid]; - index = this.indexOf(model); - this.models.splice(index, 1); - this.length--; - if (!options.silent) { - options.index = index; - model.trigger('remove', model, this, options); - } - this._removeReference(model); - } - return this; - }, - - // Get a model from the set by id. - get: function(id) { - if (id == null) return null; - return this._byId[id.id != null ? id.id : id]; - }, - - // Get a model from the set by client id. - getByCid: function(cid) { - return cid && this._byCid[cid.cid || cid]; - }, - - // Get the model at the given index. - at: function(index) { - return this.models[index]; - }, - - // Force the collection to re-sort itself. You don't need to call this under - // normal circumstances, as the set will maintain sort order as each item - // is added. - sort: function(options) { - options || (options = {}); - if (!this.comparator) throw new Error('Cannot sort a set without a comparator'); - var boundComparator = _.bind(this.comparator, this); - if (this.comparator.length == 1) { - this.models = this.sortBy(boundComparator); - } else { - this.models.sort(boundComparator); - } - if (!options.silent) this.trigger('reset', this, options); - return this; - }, - - // Pluck an attribute from each model in the collection. - pluck: function(attr) { - return _.map(this.models, function(model){ return model.get(attr); }); - }, - - // When you have more items than you want to add or remove individually, - // you can reset the entire set with a new list of models, without firing - // any `add` or `remove` events. Fires `reset` when finished. - reset: function(models, options) { - models || (models = []); - options || (options = {}); - for (var i = 0, l = this.models.length; i < l; i++) { - this._removeReference(this.models[i]); - } - this._reset(); - this.add(models, {silent: true, parse: options.parse}); - if (!options.silent) this.trigger('reset', this, options); - return this; - }, - - // Fetch the default set of models for this collection, resetting the - // collection when they arrive. If `add: true` is passed, appends the - // models to the collection instead of resetting. - fetch: function(options) { - options = options ? _.clone(options) : {}; - if (options.parse === undefined) options.parse = true; - var collection = this; - var success = options.success; - options.success = function(resp, status, xhr) { - collection[options.add ? 'add' : 'reset'](collection.parse(resp, xhr), options); - if (success) success(collection, resp); - }; - options.error = Backbone.wrapError(options.error, collection, options); - return (this.sync || Backbone.sync).call(this, 'read', this, options); - }, - - // Create a new instance of a model in this collection. Add the model to the - // collection immediately, unless `wait: true` is passed, in which case we - // wait for the server to agree. - create: function(model, options) { - var coll = this; - options = options ? _.clone(options) : {}; - model = this._prepareModel(model, options); - if (!model) return false; - if (!options.wait) coll.add(model, options); - var success = options.success; - options.success = function(nextModel, resp, xhr) { - if (options.wait) coll.add(nextModel, options); - if (success) { - success(nextModel, resp); - } else { - nextModel.trigger('sync', model, resp, options); - } - }; - model.save(null, options); - return model; - }, - - // **parse** converts a response into a list of models to be added to the - // collection. The default implementation is just to pass it through. - parse: function(resp, xhr) { - return resp; - }, - - // Proxy to _'s chain. Can't be proxied the same way the rest of the - // underscore methods are proxied because it relies on the underscore - // constructor. - chain: function () { - return _(this.models).chain(); - }, - - // Reset all internal state. Called when the collection is reset. - _reset: function(options) { - this.length = 0; - this.models = []; - this._byId = {}; - this._byCid = {}; - }, - - // Prepare a model or hash of attributes to be added to this collection. - _prepareModel: function(model, options) { - if (!(model instanceof Backbone.Model)) { - var attrs = model; - options.collection = this; - model = new this.model(attrs, options); - if (model.validate && !model._performValidation(model.attributes, options)) model = false; - } else if (!model.collection) { - model.collection = this; - } - return model; - }, - - // Internal method to remove a model's ties to a collection. - _removeReference: function(model) { - if (this == model.collection) { - delete model.collection; - } - model.off('all', this._onModelEvent, this); - }, - - // Internal method called every time a model in the set fires an event. - // Sets need to update their indexes when models change ids. All other - // events simply proxy through. "add" and "remove" events that originate - // in other collections are ignored. - _onModelEvent: function(ev, model, collection, options) { - if ((ev == 'add' || ev == 'remove') && collection != this) return; - if (ev == 'destroy') { - this.remove(model, options); - } - if (model && ev === 'change:' + model.idAttribute) { - delete this._byId[model.previous(model.idAttribute)]; - this._byId[model.id] = model; - } - this.trigger.apply(this, arguments); - } - - }); - - // Underscore methods that we want to implement on the Collection. - var methods = ['forEach', 'each', 'map', 'reduce', 'reduceRight', 'find', - 'detect', 'filter', 'select', 'reject', 'every', 'all', 'some', 'any', - 'include', 'contains', 'invoke', 'max', 'min', 'sortBy', 'sortedIndex', - 'toArray', 'size', 'first', 'initial', 'rest', 'last', 'without', 'indexOf', - 'shuffle', 'lastIndexOf', 'isEmpty', 'groupBy']; - - // Mix in each Underscore method as a proxy to `Collection#models`. - _.each(methods, function(method) { - Backbone.Collection.prototype[method] = function() { - return _[method].apply(_, [this.models].concat(_.toArray(arguments))); - }; - }); - - // Backbone.Router - // ------------------- - - // Routers map faux-URLs to actions, and fire events when routes are - // matched. Creating a new one sets its `routes` hash, if not set statically. - Backbone.Router = function(options) { - options || (options = {}); - if (options.routes) this.routes = options.routes; - this._bindRoutes(); - this.initialize.apply(this, arguments); - }; - - // Cached regular expressions for matching named param parts and splatted - // parts of route strings. - var namedParam = /:\w+/g; - var splatParam = /\*\w+/g; - var escapeRegExp = /[-[\]{}()+?.,\\^$|#\s]/g; - - // Set up all inheritable **Backbone.Router** properties and methods. - _.extend(Backbone.Router.prototype, Backbone.Events, { - - // Initialize is an empty function by default. Override it with your own - // initialization logic. - initialize: function(){}, - - // Manually bind a single named route to a callback. For example: - // - // this.route('search/:query/p:num', 'search', function(query, num) { - // ... - // }); - // - route: function(route, name, callback) { - Backbone.history || (Backbone.history = new Backbone.History); - if (!_.isRegExp(route)) route = this._routeToRegExp(route); - if (!callback) callback = this[name]; - Backbone.history.route(route, _.bind(function(fragment) { - var args = this._extractParameters(route, fragment); - callback && callback.apply(this, args); - this.trigger.apply(this, ['route:' + name].concat(args)); - Backbone.history.trigger('route', this, name, args); - }, this)); - }, - - // Simple proxy to `Backbone.history` to save a fragment into the history. - navigate: function(fragment, options) { - Backbone.history.navigate(fragment, options); - }, - - // Bind all defined routes to `Backbone.history`. We have to reverse the - // order of the routes here to support behavior where the most general - // routes can be defined at the bottom of the route map. - _bindRoutes: function() { - if (!this.routes) return; - var routes = []; - for (var route in this.routes) { - routes.unshift([route, this.routes[route]]); - } - for (var i = 0, l = routes.length; i < l; i++) { - this.route(routes[i][0], routes[i][1], this[routes[i][1]]); - } - }, - - // Convert a route string into a regular expression, suitable for matching - // against the current location hash. - _routeToRegExp: function(route) { - route = route.replace(escapeRegExp, '\\$&') - .replace(namedParam, '([^\/]+)') - .replace(splatParam, '(.*?)'); - return new RegExp('^' + route + '$'); - }, - - // Given a route, and a URL fragment that it matches, return the array of - // extracted parameters. - _extractParameters: function(route, fragment) { - return route.exec(fragment).slice(1); - } - - }); - - // Backbone.History - // ---------------- - - // Handles cross-browser history management, based on URL fragments. If the - // browser does not support `onhashchange`, falls back to polling. - Backbone.History = function() { - this.handlers = []; - _.bindAll(this, 'checkUrl'); - }; - - // Cached regex for cleaning leading hashes and slashes . - var routeStripper = /^[#\/]/; - - // Cached regex for detecting MSIE. - var isExplorer = /msie [\w.]+/; - - // Has the history handling already been started? - var historyStarted = false; - - // Set up all inheritable **Backbone.History** properties and methods. - _.extend(Backbone.History.prototype, Backbone.Events, { - - // The default interval to poll for hash changes, if necessary, is - // twenty times a second. - interval: 50, - - // Get the cross-browser normalized URL fragment, either from the URL, - // the hash, or the override. - getFragment: function(fragment, forcePushState) { - if (fragment == null) { - if (this._hasPushState || forcePushState) { - fragment = window.location.pathname; - var search = window.location.search; - if (search) fragment += search; - } else { - fragment = window.location.hash; - } - } - fragment = decodeURIComponent(fragment.replace(routeStripper, '')); - if (!fragment.indexOf(this.options.root)) fragment = fragment.substr(this.options.root.length); - return fragment; - }, - - // Start the hash change handling, returning `true` if the current URL matches - // an existing route, and `false` otherwise. - start: function(options) { - - // Figure out the initial configuration. Do we need an iframe? - // Is pushState desired ... is it available? - if (historyStarted) throw new Error("Backbone.history has already been started"); - this.options = _.extend({}, {root: '/'}, this.options, options); - this._wantsHashChange = this.options.hashChange !== false; - this._wantsPushState = !!this.options.pushState; - this._hasPushState = !!(this.options.pushState && window.history && window.history.pushState); - var fragment = this.getFragment(); - var docMode = document.documentMode; - var oldIE = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7)); - if (oldIE) { - this.iframe = $('