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<title>[27170] trunk: Update Backbone from 1.0 to 1.1.</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/27170">27170</a></dd>
<dt>Author</dt> <dd>nacin</dd>
<dt>Date</dt> <dd>2014-02-13 07:33:29 +0000 (Thu, 13 Feb 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Update Backbone from 1.0 to 1.1.
Also update Underscore to 1.6. Includes the development versions of both, which are not included in the build.
Here is Backbone's changelog:
* Made the return values of Collection?\226?\128?\153s `set`, `add`, `remove`, and `reset` more useful. Instead of returning `this`, they now return the changed (added, removed or updated) model or list of
models. (This means they can no longer be chained.)
* Backbone Views no longer automatically attach options passed to the constructor as `this.options` and Backbone Models no longer attach `url` and `urlRoot` options, but you can do it yourself if you prefer. (But if you extend `wp.Backbone.View`, options will be attached for you.)
* All `"invalid"` events now pass consistent arguments. First the model in question, then the error object, then options.
* You are no longer permitted to change the id of your model during `parse`. Use `idAttribute` instead.
* On the other hand, `parse` is now an excellent place to extract and vivify incoming nested JSON into associated submodels.
See <a href="http://core.trac.wordpress.org/changeset/27171">[27171]</a> (next commit) for changes made to WordPress to be compatible with Backbone 1.1.
props gcorne, georgestephanis.
see <a href="http://core.trac.wordpress.org/ticket/26799">#26799</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkGruntfilejs">trunk/Gruntfile.js</a></li>
<li><a href="#trunksrcwpincludesjsbackboneminjs">trunk/src/wp-includes/js/backbone.min.js</a></li>
<li><a href="#trunksrcwpincludesjsunderscoreminjs">trunk/src/wp-includes/js/underscore.min.js</a></li>
<li><a href="#trunksrcwpincludesscriptloaderphp">trunk/src/wp-includes/script-loader.php</a></li>
</ul>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesjsbackbonejs">trunk/src/wp-includes/js/backbone.js</a></li>
<li><a href="#trunksrcwpincludesjsunderscorejs">trunk/src/wp-includes/js/underscore.js</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkGruntfilejs"></a>
<div class="modfile"><h4>Modified: trunk/Gruntfile.js (27169 => 27170)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Gruntfile.js 2014-02-13 05:09:04 UTC (rev 27169)
+++ trunk/Gruntfile.js 2014-02-13 07:33:29 UTC (rev 27170)
</span><span class="lines">@@ -30,6 +30,9 @@
</span><span class="cx"> src: [
</span><span class="cx"> '**',
</span><span class="cx"> '!**/.{svn,git}/**', // Ignore version control directories.
</span><ins>+ // Ignore unminified versions of external libs we don't ship:
+ '!wp-includes/js/backbone.js',
+ '!wp-includes/js/underscore.js',
</ins><span class="cx"> '!wp-includes/version.php' // Exclude version.php
</span><span class="cx"> ],
</span><span class="cx"> dest: BUILD_DIR
</span></span></pre></div>
<a id="trunksrcwpincludesjsbackbonejs"></a>
<div class="addfile"><h4>Added: trunk/src/wp-includes/js/backbone.js (0 => 27170)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/backbone.js (rev 0)
+++ trunk/src/wp-includes/js/backbone.js 2014-02-13 07:33:29 UTC (rev 27170)
</span><span class="lines">@@ -0,0 +1,1581 @@
</span><ins>+// Backbone.js 1.1.0
+
+// (c) 2010-2011 Jeremy Ashkenas, DocumentCloud Inc.
+// (c) 2011-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+// 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, `exports`
+ // 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 local references to array methods we'll want to use later.
+ var array = [];
+ var push = array.push;
+ var slice = array.slice;
+ var splice = array.splice;
+
+ // The top-level namespace. All public Backbone classes and modules will
+ // be attached to this. Exported for both the browser and the server.
+ 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 = '1.1.0';
+
+ // 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, Ender, or My Library (kidding) owns
+ // the `$` variable.
+ Backbone.$ = root.jQuery || root.Zepto || root.ender || root.$;
+
+ // 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 `"PATCH"`, `"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');
+ //
+ var Events = Backbone.Events = {
+
+ // Bind an event to a `callback` function. Passing `"all"` will bind
+ // the callback to all events fired.
+ on: function(name, callback, context) {
+ if (!eventsApi(this, 'on', name, [callback, context]) || !callback) return this;
+ this._events || (this._events = {});
+ var events = this._events[name] || (this._events[name] = []);
+ events.push({callback: callback, context: context, ctx: context || this});
+ return this;
+ },
+
+ // Bind an event to only be triggered a single time. After the first time
+ // the callback is invoked, it will be removed.
+ once: function(name, callback, context) {
+ if (!eventsApi(this, 'once', name, [callback, context]) || !callback) return this;
+ var self = this;
+ var once = _.once(function() {
+ self.off(name, once);
+ callback.apply(this, arguments);
+ });
+ once._callback = callback;
+ return this.on(name, once, context);
+ },
+
+ // 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 `name` is null, removes all bound
+ // callbacks for all events.
+ off: function(name, callback, context) {
+ var retain, ev, events, names, i, l, j, k;
+ if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
+ if (!name && !callback && !context) {
+ this._events = {};
+ return this;
+ }
+ names = name ? [name] : _.keys(this._events);
+ for (i = 0, l = names.length; i < l; i++) {
+ name = names[i];
+ if (events = this._events[name]) {
+ this._events[name] = retain = [];
+ if (callback || context) {
+ for (j = 0, k = events.length; j < k; j++) {
+ ev = events[j];
+ if ((callback && callback !== ev.callback && callback !== ev.callback._callback) ||
+ (context && context !== ev.context)) {
+ retain.push(ev);
+ }
+ }
+ }
+ if (!retain.length) delete this._events[name];
+ }
+ }
+
+ return this;
+ },
+
+ // Trigger one or many events, firing all bound callbacks. Callbacks are
+ // passed the same arguments as `trigger` is, apart from the event name
+ // (unless you're listening on `"all"`, which will cause your callback to
+ // receive the true name of the event as the first argument).
+ trigger: function(name) {
+ if (!this._events) return this;
+ var args = slice.call(arguments, 1);
+ if (!eventsApi(this, 'trigger', name, args)) return this;
+ var events = this._events[name];
+ var allEvents = this._events.all;
+ if (events) triggerEvents(events, args);
+ if (allEvents) triggerEvents(allEvents, arguments);
+ return this;
+ },
+
+ // Tell this object to stop listening to either specific events ... or
+ // to every object it's currently listening to.
+ stopListening: function(obj, name, callback) {
+ var listeningTo = this._listeningTo;
+ if (!listeningTo) return this;
+ var remove = !name && !callback;
+ if (!callback && typeof name === 'object') callback = this;
+ if (obj) (listeningTo = {})[obj._listenId] = obj;
+ for (var id in listeningTo) {
+ obj = listeningTo[id];
+ obj.off(name, callback, this);
+ if (remove || _.isEmpty(obj._events)) delete this._listeningTo[id];
+ }
+ return this;
+ }
+
+ };
+
+ // Regular expression used to split event strings.
+ var eventSplitter = /\s+/;
+
+ // Implement fancy features of the Events API such as multiple event
+ // names `"change blur"` and jQuery-style event maps `{change: action}`
+ // in terms of the existing API.
+ var eventsApi = function(obj, action, name, rest) {
+ if (!name) return true;
+
+ // Handle event maps.
+ if (typeof name === 'object') {
+ for (var key in name) {
+ obj[action].apply(obj, [key, name[key]].concat(rest));
+ }
+ return false;
+ }
+
+ // Handle space separated event names.
+ if (eventSplitter.test(name)) {
+ var names = name.split(eventSplitter);
+ for (var i = 0, l = names.length; i < l; i++) {
+ obj[action].apply(obj, [names[i]].concat(rest));
+ }
+ return false;
+ }
+
+ return true;
+ };
+
+ // A difficult-to-believe, but optimized internal dispatch function for
+ // triggering events. Tries to keep the usual cases speedy (most internal
+ // Backbone events have 3 arguments).
+ var triggerEvents = function(events, args) {
+ var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2];
+ switch (args.length) {
+ case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
+ case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
+ case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
+ case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
+ default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args);
+ }
+ };
+
+ var listenMethods = {listenTo: 'on', listenToOnce: 'once'};
+
+ // Inversion-of-control versions of `on` and `once`. Tell *this* object to
+ // listen to an event in another object ... keeping track of what it's
+ // listening to.
+ _.each(listenMethods, function(implementation, method) {
+ Events[method] = function(obj, name, callback) {
+ var listeningTo = this._listeningTo || (this._listeningTo = {});
+ var id = obj._listenId || (obj._listenId = _.uniqueId('l'));
+ listeningTo[id] = obj;
+ if (!callback && typeof name === 'object') callback = this;
+ obj[implementation](name, callback, this);
+ return this;
+ };
+ });
+
+ // Aliases for backwards compatibility.
+ Events.bind = Events.on;
+ Events.unbind = Events.off;
+
+ // Allow the `Backbone` object to serve as a global event bus, for folks who
+ // want global "pubsub" in a convenient place.
+ _.extend(Backbone, Events);
+
+ // Backbone.Model
+ // --------------
+
+ // Backbone **Models** are the basic data object in the framework --
+ // frequently representing a row in a table in a database on your server.
+ // A discrete chunk of data and a bunch of useful, related methods for
+ // performing computations and transformations on that data.
+
+ // Create a new model with the specified attributes. A client id (`cid`)
+ // is automatically generated and assigned for you.
+ var Model = Backbone.Model = function(attributes, options) {
+ var attrs = attributes || {};
+ options || (options = {});
+ this.cid = _.uniqueId('c');
+ this.attributes = {};
+ if (options.collection) this.collection = options.collection;
+ if (options.parse) attrs = this.parse(attrs, options) || {};
+ attrs = _.defaults({}, attrs, _.result(this, 'defaults'));
+ this.set(attrs, options);
+ this.changed = {};
+ this.initialize.apply(this, arguments);
+ };
+
+ // Attach all inheritable methods to the Model prototype.
+ _.extend(Model.prototype, Events, {
+
+ // A hash of attributes whose current and previous value differ.
+ changed: null,
+
+ // The value returned during the last failed validation.
+ validationError: null,
+
+ // 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(options) {
+ return _.clone(this.attributes);
+ },
+
+ // Proxy `Backbone.sync` by default -- but override this if you need
+ // custom syncing semantics for *this* particular model.
+ sync: function() {
+ return Backbone.sync.apply(this, arguments);
+ },
+
+ // Get the value of an attribute.
+ get: function(attr) {
+ return this.attributes[attr];
+ },
+
+ // Get the HTML-escaped value of an attribute.
+ escape: function(attr) {
+ return _.escape(this.get(attr));
+ },
+
+ // Returns `true` if the attribute contains a value that is not null
+ // or undefined.
+ has: function(attr) {
+ return this.get(attr) != null;
+ },
+
+ // Set a hash of model attributes on the object, firing `"change"`. This is
+ // the core primitive operation of a model, updating the data and notifying
+ // anyone who needs to know about the change in state. The heart of the beast.
+ set: function(key, val, options) {
+ var attr, attrs, unset, changes, silent, changing, prev, current;
+ if (key == null) return this;
+
+ // Handle both `"key", value` and `{key: value}` -style arguments.
+ if (typeof key === 'object') {
+ attrs = key;
+ options = val;
+ } else {
+ (attrs = {})[key] = val;
+ }
+
+ options || (options = {});
+
+ // Run validation.
+ if (!this._validate(attrs, options)) return false;
+
+ // Extract attributes and options.
+ unset = options.unset;
+ silent = options.silent;
+ changes = [];
+ changing = this._changing;
+ this._changing = true;
+
+ if (!changing) {
+ this._previousAttributes = _.clone(this.attributes);
+ this.changed = {};
+ }
+ current = this.attributes, prev = this._previousAttributes;
+
+ // Check for changes of `id`.
+ if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
+
+ // For each `set` attribute, update or delete the current value.
+ for (attr in attrs) {
+ val = attrs[attr];
+ if (!_.isEqual(current[attr], val)) changes.push(attr);
+ if (!_.isEqual(prev[attr], val)) {
+ this.changed[attr] = val;
+ } else {
+ delete this.changed[attr];
+ }
+ unset ? delete current[attr] : current[attr] = val;
+ }
+
+ // Trigger all relevant attribute changes.
+ if (!silent) {
+ if (changes.length) this._pending = true;
+ for (var i = 0, l = changes.length; i < l; i++) {
+ this.trigger('change:' + changes[i], this, current[changes[i]], options);
+ }
+ }
+
+ // You might be wondering why there's a `while` loop here. Changes can
+ // be recursively nested within `"change"` events.
+ if (changing) return this;
+ if (!silent) {
+ while (this._pending) {
+ this._pending = false;
+ this.trigger('change', this, options);
+ }
+ }
+ this._pending = false;
+ this._changing = false;
+ return this;
+ },
+
+ // Remove an attribute from the model, firing `"change"`. `unset` is a noop
+ // if the attribute doesn't exist.
+ unset: function(attr, options) {
+ return this.set(attr, void 0, _.extend({}, options, {unset: true}));
+ },
+
+ // Clear all attributes on the model, firing `"change"`.
+ clear: function(options) {
+ var attrs = {};
+ for (var key in this.attributes) attrs[key] = void 0;
+ return this.set(attrs, _.extend({}, options, {unset: true}));
+ },
+
+ // 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 == null) return !_.isEmpty(this.changed);
+ return _.has(this.changed, attr);
+ },
+
+ // 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.
+ // You can also pass an attributes object to diff against the model,
+ // determining if there *would be* a change.
+ changedAttributes: function(diff) {
+ if (!diff) return this.hasChanged() ? _.clone(this.changed) : false;
+ var val, changed = false;
+ var old = this._changing ? this._previousAttributes : this.attributes;
+ for (var attr in diff) {
+ if (_.isEqual(old[attr], (val = diff[attr]))) continue;
+ (changed || (changed = {}))[attr] = val;
+ }
+ return changed;
+ },
+
+ // Get the previous value of an attribute, recorded at the time the last
+ // `"change"` event was fired.
+ previous: function(attr) {
+ if (attr == null || !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);
+ },
+
+ // Fetch the model from the server. If the server's representation of the
+ // model differs from its current attributes, they will be overridden,
+ // triggering a `"change"` event.
+ fetch: function(options) {
+ options = options ? _.clone(options) : {};
+ if (options.parse === void 0) options.parse = true;
+ var model = this;
+ var success = options.success;
+ options.success = function(resp) {
+ if (!model.set(model.parse(resp, options), options)) return false;
+ if (success) success(model, resp, options);
+ model.trigger('sync', model, resp, options);
+ };
+ wrapError(this, options);
+ return this.sync('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, val, options) {
+ var attrs, method, xhr, attributes = this.attributes;
+
+ // Handle both `"key", value` and `{key: value}` -style arguments.
+ if (key == null || typeof key === 'object') {
+ attrs = key;
+ options = val;
+ } else {
+ (attrs = {})[key] = val;
+ }
+
+ options = _.extend({validate: true}, options);
+
+ // If we're not waiting and attributes exist, save acts as
+ // `set(attr).save(null, opts)` with validation. Otherwise, check if
+ // the model will be valid when the attributes, if any, are set.
+ if (attrs && !options.wait) {
+ if (!this.set(attrs, options)) return false;
+ } else {
+ if (!this._validate(attrs, options)) return false;
+ }
+
+ // Set temporary attributes if `{wait: true}`.
+ if (attrs && options.wait) {
+ this.attributes = _.extend({}, attributes, attrs);
+ }
+
+ // After a successful server-side save, the client is (optionally)
+ // updated with the server-side state.
+ if (options.parse === void 0) options.parse = true;
+ var model = this;
+ var success = options.success;
+ options.success = function(resp) {
+ // Ensure attributes are restored during synchronous saves.
+ model.attributes = attributes;
+ var serverAttrs = model.parse(resp, options);
+ if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
+ if (_.isObject(serverAttrs) && !model.set(serverAttrs, options)) {
+ return false;
+ }
+ if (success) success(model, resp, options);
+ model.trigger('sync', model, resp, options);
+ };
+ wrapError(this, options);
+
+ method = this.isNew() ? 'create' : (options.patch ? 'patch' : 'update');
+ if (method === 'patch') options.attrs = attrs;
+ xhr = this.sync(method, this, options);
+
+ // Restore attributes.
+ if (attrs && options.wait) this.attributes = attributes;
+
+ return xhr;
+ },
+
+ // 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 destroy = function() {
+ model.trigger('destroy', model, model.collection, options);
+ };
+
+ options.success = function(resp) {
+ if (options.wait || model.isNew()) destroy();
+ if (success) success(model, resp, options);
+ if (!model.isNew()) model.trigger('sync', model, resp, options);
+ };
+
+ if (this.isNew()) {
+ options.success();
+ return false;
+ }
+ wrapError(this, options);
+
+ var xhr = this.sync('delete', this, options);
+ if (!options.wait) destroy();
+ 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 = _.result(this, 'urlRoot') || _.result(this.collection, 'url') || 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, options) {
+ 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;
+ },
+
+ // Check if the model is currently in a valid state.
+ isValid: function(options) {
+ return this._validate({}, _.extend(options || {}, { validate: true }));
+ },
+
+ // Run validation against the next complete set of model attributes,
+ // returning `true` if all is well. Otherwise, fire an `"invalid"` event.
+ _validate: function(attrs, options) {
+ if (!options.validate || !this.validate) return true;
+ attrs = _.extend({}, this.attributes, attrs);
+ var error = this.validationError = this.validate(attrs, options) || null;
+ if (!error) return true;
+ this.trigger('invalid', this, error, _.extend(options, {validationError: error}));
+ return false;
+ }
+
+ });
+
+ // Underscore methods that we want to implement on the Model.
+ var modelMethods = ['keys', 'values', 'pairs', 'invert', 'pick', 'omit'];
+
+ // Mix in each Underscore method as a proxy to `Model#attributes`.
+ _.each(modelMethods, function(method) {
+ Model.prototype[method] = function() {
+ var args = slice.call(arguments);
+ args.unshift(this.attributes);
+ return _[method].apply(_, args);
+ };
+ });
+
+ // Backbone.Collection
+ // -------------------
+
+ // If models tend to represent a single row of data, a Backbone Collection is
+ // more analagous to a table full of data ... or a small slice or page of that
+ // table, or a collection of rows that belong together for a particular reason
+ // -- all of the messages in this particular folder, all of the documents
+ // belonging to this particular author, and so on. Collections maintain
+ // indexes of their models, both in order, and for lookup by `id`.
+
+ // Create a new **Collection**, perhaps to contain a specific type of `model`.
+ // If a `comparator` is specified, the Collection will maintain
+ // its models in sort order, as they're added and removed.
+ var Collection = Backbone.Collection = function(models, options) {
+ options || (options = {});
+ if (options.model) this.model = options.model;
+ if (options.comparator !== void 0) this.comparator = options.comparator;
+ this._reset();
+ this.initialize.apply(this, arguments);
+ if (models) this.reset(models, _.extend({silent: true}, options));
+ };
+
+ // Default options for `Collection#set`.
+ var setOptions = {add: true, remove: true, merge: true};
+ var addOptions = {add: true, remove: false};
+
+ // Define the Collection's inheritable methods.
+ _.extend(Collection.prototype, Events, {
+
+ // The default model for a collection is just a **Backbone.Model**.
+ // This should be overridden in most cases.
+ model: 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(options) {
+ return this.map(function(model){ return model.toJSON(options); });
+ },
+
+ // Proxy `Backbone.sync` by default.
+ sync: function() {
+ return Backbone.sync.apply(this, arguments);
+ },
+
+ // Add a model, or list of models to the set.
+ add: function(models, options) {
+ return this.set(models, _.extend({merge: false}, options, addOptions));
+ },
+
+ // Remove a model, or a list of models from the set.
+ remove: function(models, options) {
+ var singular = !_.isArray(models);
+ models = singular ? [models] : _.clone(models);
+ options || (options = {});
+ var i, l, index, model;
+ for (i = 0, l = models.length; i < l; i++) {
+ model = models[i] = this.get(models[i]);
+ if (!model) continue;
+ delete this._byId[model.id];
+ delete this._byId[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 singular ? models[0] : models;
+ },
+
+ // Update a collection by `set`-ing a new list of models, adding new ones,
+ // removing models that are no longer present, and merging models that
+ // already exist in the collection, as necessary. Similar to **Model#set**,
+ // the core operation for updating the data contained by the collection.
+ set: function(models, options) {
+ options = _.defaults({}, options, setOptions);
+ if (options.parse) models = this.parse(models, options);
+ var singular = !_.isArray(models);
+ models = singular ? (models ? [models] : []) : _.clone(models);
+ var i, l, id, model, attrs, existing, sort;
+ var at = options.at;
+ var targetModel = this.model;
+ var sortable = this.comparator && (at == null) && options.sort !== false;
+ var sortAttr = _.isString(this.comparator) ? this.comparator : null;
+ var toAdd = [], toRemove = [], modelMap = {};
+ var add = options.add, merge = options.merge, remove = options.remove;
+ var order = !sortable && add && remove ? [] : false;
+
+ // Turn bare objects into model references, and prevent invalid models
+ // from being added.
+ for (i = 0, l = models.length; i < l; i++) {
+ attrs = models[i];
+ if (attrs instanceof Model) {
+ id = model = attrs;
+ } else {
+ id = attrs[targetModel.prototype.idAttribute];
+ }
+
+ // If a duplicate is found, prevent it from being added and
+ // optionally merge it into the existing model.
+ if (existing = this.get(id)) {
+ if (remove) modelMap[existing.cid] = true;
+ if (merge) {
+ attrs = attrs === model ? model.attributes : attrs;
+ if (options.parse) attrs = existing.parse(attrs, options);
+ existing.set(attrs, options);
+ if (sortable && !sort && existing.hasChanged(sortAttr)) sort = true;
+ }
+ models[i] = existing;
+
+ // If this is a new, valid model, push it to the `toAdd` list.
+ } else if (add) {
+ model = models[i] = this._prepareModel(attrs, options);
+ if (!model) continue;
+ toAdd.push(model);
+
+ // Listen to added models' events, and index models for lookup by
+ // `id` and by `cid`.
+ model.on('all', this._onModelEvent, this);
+ this._byId[model.cid] = model;
+ if (model.id != null) this._byId[model.id] = model;
+ }
+ if (order) order.push(existing || model);
+ }
+
+ // Remove nonexistent models if appropriate.
+ if (remove) {
+ for (i = 0, l = this.length; i < l; ++i) {
+ if (!modelMap[(model = this.models[i]).cid]) toRemove.push(model);
+ }
+ if (toRemove.length) this.remove(toRemove, options);
+ }
+
+ // See if sorting is needed, update `length` and splice in new models.
+ if (toAdd.length || (order && order.length)) {
+ if (sortable) sort = true;
+ this.length += toAdd.length;
+ if (at != null) {
+ for (i = 0, l = toAdd.length; i < l; i++) {
+ this.models.splice(at + i, 0, toAdd[i]);
+ }
+ } else {
+ if (order) this.models.length = 0;
+ var orderedModels = order || toAdd;
+ for (i = 0, l = orderedModels.length; i < l; i++) {
+ this.models.push(orderedModels[i]);
+ }
+ }
+ }
+
+ // Silently sort the collection if appropriate.
+ if (sort) this.sort({silent: true});
+
+ // Unless silenced, it's time to fire all appropriate add/sort events.
+ if (!options.silent) {
+ for (i = 0, l = toAdd.length; i < l; i++) {
+ (model = toAdd[i]).trigger('add', model, this, options);
+ }
+ if (sort || (order && order.length)) this.trigger('sort', this, options);
+ }
+
+ // Return the added (or merged) model (or models).
+ return singular ? models[0] : models;
+ },
+
+ // 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 granular `add` or `remove` events. Fires `reset` when finished.
+ // Useful for bulk operations and optimizations.
+ reset: function(models, options) {
+ options || (options = {});
+ for (var i = 0, l = this.models.length; i < l; i++) {
+ this._removeReference(this.models[i]);
+ }
+ options.previousModels = this.models;
+ this._reset();
+ models = this.add(models, _.extend({silent: true}, options));
+ if (!options.silent) this.trigger('reset', this, options);
+ return models;
+ },
+
+ // Add a model to the end of the collection.
+ push: function(model, options) {
+ return this.add(model, _.extend({at: this.length}, options));
+ },
+
+ // Remove a model from the end of the collection.
+ pop: function(options) {
+ var model = this.at(this.length - 1);
+ this.remove(model, options);
+ return model;
+ },
+
+ // Add a model to the beginning of the collection.
+ unshift: function(model, options) {
+ return this.add(model, _.extend({at: 0}, options));
+ },
+
+ // Remove a model from the beginning of the collection.
+ shift: function(options) {
+ var model = this.at(0);
+ this.remove(model, options);
+ return model;
+ },
+
+ // Slice out a sub-array of models from the collection.
+ slice: function() {
+ return slice.apply(this.models, arguments);
+ },
+
+ // Get a model from the set by id.
+ get: function(obj) {
+ if (obj == null) return void 0;
+ return this._byId[obj.id] || this._byId[obj.cid] || this._byId[obj];
+ },
+
+ // Get the model at the given index.
+ at: function(index) {
+ return this.models[index];
+ },
+
+ // Return models with matching attributes. Useful for simple cases of
+ // `filter`.
+ where: function(attrs, first) {
+ if (_.isEmpty(attrs)) return first ? void 0 : [];
+ return this[first ? 'find' : 'filter'](function(model) {
+ for (var key in attrs) {
+ if (attrs[key] !== model.get(key)) return false;
+ }
+ return true;
+ });
+ },
+
+ // Return the first model with matching attributes. Useful for simple cases
+ // of `find`.
+ findWhere: function(attrs) {
+ return this.where(attrs, true);
+ },
+
+ // 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) {
+ if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
+ options || (options = {});
+
+ // Run sort based on type of `comparator`.
+ if (_.isString(this.comparator) || this.comparator.length === 1) {
+ this.models = this.sortBy(this.comparator, this);
+ } else {
+ this.models.sort(_.bind(this.comparator, this));
+ }
+
+ if (!options.silent) this.trigger('sort', this, options);
+ return this;
+ },
+
+ // Pluck an attribute from each model in the collection.
+ pluck: function(attr) {
+ return _.invoke(this.models, 'get', attr);
+ },
+
+ // Fetch the default set of models for this collection, resetting the
+ // collection when they arrive. If `reset: true` is passed, the response
+ // data will be passed through the `reset` method instead of `set`.
+ fetch: function(options) {
+ options = options ? _.clone(options) : {};
+ if (options.parse === void 0) options.parse = true;
+ var success = options.success;
+ var collection = this;
+ options.success = function(resp) {
+ var method = options.reset ? 'reset' : 'set';
+ collection[method](resp, options);
+ if (success) success(collection, resp, options);
+ collection.trigger('sync', collection, resp, options);
+ };
+ wrapError(this, options);
+ return this.sync('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) {
+ options = options ? _.clone(options) : {};
+ if (!(model = this._prepareModel(model, options))) return false;
+ if (!options.wait) this.add(model, options);
+ var collection = this;
+ var success = options.success;
+ options.success = function(model, resp, options) {
+ if (options.wait) collection.add(model, options);
+ if (success) success(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, options) {
+ return resp;
+ },
+
+ // Create a new collection with an identical list of models as this one.
+ clone: function() {
+ return new this.constructor(this.models);
+ },
+
+ // Private method to reset all internal state. Called when the collection
+ // is first initialized or reset.
+ _reset: function() {
+ this.length = 0;
+ this.models = [];
+ this._byId = {};
+ },
+
+ // Prepare a hash of attributes (or other model) to be added to this
+ // collection.
+ _prepareModel: function(attrs, options) {
+ if (attrs instanceof Model) {
+ if (!attrs.collection) attrs.collection = this;
+ return attrs;
+ }
+ options = options ? _.clone(options) : {};
+ options.collection = this;
+ var model = new this.model(attrs, options);
+ if (!model.validationError) return model;
+ this.trigger('invalid', this, model.validationError, options);
+ return false;
+ },
+
+ // Internal method to sever 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(event, model, collection, options) {
+ if ((event === 'add' || event === 'remove') && collection !== this) return;
+ if (event === 'destroy') this.remove(model, options);
+ if (model && event === 'change:' + model.idAttribute) {
+ delete this._byId[model.previous(model.idAttribute)];
+ if (model.id != null) this._byId[model.id] = model;
+ }
+ this.trigger.apply(this, arguments);
+ }
+
+ });
+
+ // Underscore methods that we want to implement on the Collection.
+ // 90% of the core usefulness of Backbone Collections is actually implemented
+ // right here:
+ var methods = ['forEach', 'each', 'map', 'collect', 'reduce', 'foldl',
+ 'inject', 'reduceRight', 'foldr', 'find', 'detect', 'filter', 'select',
+ 'reject', 'every', 'all', 'some', 'any', 'include', 'contains', 'invoke',
+ 'max', 'min', 'toArray', 'size', 'first', 'head', 'take', 'initial', 'rest',
+ 'tail', 'drop', 'last', 'without', 'difference', 'indexOf', 'shuffle',
+ 'lastIndexOf', 'isEmpty', 'chain'];
+
+ // Mix in each Underscore method as a proxy to `Collection#models`.
+ _.each(methods, function(method) {
+ Collection.prototype[method] = function() {
+ var args = slice.call(arguments);
+ args.unshift(this.models);
+ return _[method].apply(_, args);
+ };
+ });
+
+ // Underscore methods that take a property name as an argument.
+ var attributeMethods = ['groupBy', 'countBy', 'sortBy'];
+
+ // Use attributes instead of properties.
+ _.each(attributeMethods, function(method) {
+ Collection.prototype[method] = function(value, context) {
+ var iterator = _.isFunction(value) ? value : function(model) {
+ return model.get(value);
+ };
+ return _[method](this.models, iterator, context);
+ };
+ });
+
+ // Backbone.View
+ // -------------
+
+ // Backbone Views are almost more convention than they are actual code. A View
+ // is simply a JavaScript object that represents a logical chunk of UI in the
+ // DOM. This might be a single item, an entire list, a sidebar or panel, or
+ // even the surrounding frame which wraps your whole app. Defining a chunk of
+ // UI as a **View** allows you to define your DOM events declaratively, without
+ // having to worry about render order ... and makes it easy for the view to
+ // react to specific changes in the state of your models.
+
+ // Creating a Backbone.View creates its initial element outside of the DOM,
+ // if an existing element is not provided...
+ var View = Backbone.View = function(options) {
+ this.cid = _.uniqueId('view');
+ options || (options = {});
+ _.extend(this, _.pick(options, viewOptions));
+ this._ensureElement();
+ this.initialize.apply(this, arguments);
+ this.delegateEvents();
+ };
+
+ // Cached regex to split keys for `delegate`.
+ var delegateEventSplitter = /^(\S+)\s*(.*)$/;
+
+ // List of view options to be merged as properties.
+ var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events'];
+
+ // Set up all inheritable **Backbone.View** properties and methods.
+ _.extend(View.prototype, Events, {
+
+ // The default `tagName` of a View's element is `"div"`.
+ tagName: 'div',
+
+ // jQuery delegate for element lookup, scoped to DOM elements within the
+ // current view. This should be preferred to global lookups where possible.
+ $: function(selector) {
+ return this.$el.find(selector);
+ },
+
+ // Initialize is an empty function by default. Override it with your own
+ // initialization logic.
+ initialize: function(){},
+
+ // **render** is the core function that your view should override, in order
+ // to populate its element (`this.el`), with the appropriate HTML. The
+ // convention is for **render** to always return `this`.
+ render: function() {
+ return this;
+ },
+
+ // Remove this view by taking the element out of the DOM, and removing any
+ // applicable Backbone.Events listeners.
+ remove: function() {
+ this.$el.remove();
+ this.stopListening();
+ return this;
+ },
+
+ // Change the view's element (`this.el` property), including event
+ // re-delegation.
+ setElement: function(element, delegate) {
+ if (this.$el) this.undelegateEvents();
+ this.$el = element instanceof Backbone.$ ? element : Backbone.$(element);
+ this.el = this.$el[0];
+ if (delegate !== false) this.delegateEvents();
+ return this;
+ },
+
+ // Set callbacks, where `this.events` is a hash of
+ //
+ // *{"event selector": "callback"}*
+ //
+ // {
+ // 'mousedown .title': 'edit',
+ // 'click .button': 'save',
+ // 'click .open': function(e) { ... }
+ // }
+ //
+ // pairs. Callbacks will be bound to the view, with `this` set properly.
+ // Uses event delegation for efficiency.
+ // Omitting the selector binds the event to `this.el`.
+ // This only works for delegate-able events: not `focus`, `blur`, and
+ // not `change`, `submit`, and `reset` in Internet Explorer.
+ delegateEvents: function(events) {
+ if (!(events || (events = _.result(this, 'events')))) return this;
+ this.undelegateEvents();
+ for (var key in events) {
+ var method = events[key];
+ if (!_.isFunction(method)) method = this[events[key]];
+ if (!method) continue;
+
+ var match = key.match(delegateEventSplitter);
+ var eventName = match[1], selector = match[2];
+ method = _.bind(method, this);
+ eventName += '.delegateEvents' + this.cid;
+ if (selector === '') {
+ this.$el.on(eventName, method);
+ } else {
+ this.$el.on(eventName, selector, method);
+ }
+ }
+ return this;
+ },
+
+ // Clears all callbacks previously bound to the view with `delegateEvents`.
+ // You usually don't need to use this, but may wish to if you have multiple
+ // Backbone views attached to the same DOM element.
+ undelegateEvents: function() {
+ this.$el.off('.delegateEvents' + this.cid);
+ return this;
+ },
+
+ // Ensure that the View has a DOM element to render into.
+ // If `this.el` is a string, pass it through `$()`, take the first
+ // matching element, and re-assign it to `el`. Otherwise, create
+ // an element from the `id`, `className` and `tagName` properties.
+ _ensureElement: function() {
+ if (!this.el) {
+ var attrs = _.extend({}, _.result(this, 'attributes'));
+ if (this.id) attrs.id = _.result(this, 'id');
+ if (this.className) attrs['class'] = _.result(this, 'className');
+ var $el = Backbone.$('<' + _.result(this, 'tagName') + '>').attr(attrs);
+ this.setElement($el, false);
+ } else {
+ this.setElement(_.result(this, 'el'), false);
+ }
+ }
+
+ });
+
+ // Backbone.sync
+ // -------------
+
+ // Override this function to change the manner in which Backbone persists
+ // models to the server. You will be passed the type of request, and the
+ // model in question. By default, makes a RESTful Ajax request
+ // to the model's `url()`. Some possible customizations could be:
+ //
+ // * Use `setTimeout` to batch rapid-fire updates into a single request.
+ // * Send up the models as XML instead of JSON.
+ // * Persist models via WebSockets instead of Ajax.
+ //
+ // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests
+ // as `POST`, with a `_method` parameter containing the true HTTP method,
+ // as well as all requests with the body as `application/x-www-form-urlencoded`
+ // instead of `application/json` with the model in a param named `model`.
+ // Useful when interfacing with server-side languages like **PHP** that make
+ // it difficult to read the body of `PUT` requests.
+ Backbone.sync = function(method, model, options) {
+ var type = methodMap[method];
+
+ // Default options, unless specified.
+ _.defaults(options || (options = {}), {
+ emulateHTTP: Backbone.emulateHTTP,
+ emulateJSON: Backbone.emulateJSON
+ });
+
+ // Default JSON-request options.
+ var params = {type: type, dataType: 'json'};
+
+ // Ensure that we have a URL.
+ if (!options.url) {
+ params.url = _.result(model, 'url') || urlError();
+ }
+
+ // Ensure that we have the appropriate request data.
+ if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) {
+ params.contentType = 'application/json';
+ params.data = JSON.stringify(options.attrs || model.toJSON(options));
+ }
+
+ // For older servers, emulate JSON by encoding the request into an HTML-form.
+ if (options.emulateJSON) {
+ params.contentType = 'application/x-www-form-urlencoded';
+ params.data = params.data ? {model: params.data} : {};
+ }
+
+ // For older servers, emulate HTTP by mimicking the HTTP method with `_method`
+ // And an `X-HTTP-Method-Override` header.
+ if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) {
+ params.type = 'POST';
+ if (options.emulateJSON) params.data._method = type;
+ var beforeSend = options.beforeSend;
+ options.beforeSend = function(xhr) {
+ xhr.setRequestHeader('X-HTTP-Method-Override', type);
+ if (beforeSend) return beforeSend.apply(this, arguments);
+ };
+ }
+
+ // Don't process data on a non-GET request.
+ if (params.type !== 'GET' && !options.emulateJSON) {
+ params.processData = false;
+ }
+
+ // If we're sending a `PATCH` request, and we're in an old Internet Explorer
+ // that still has ActiveX enabled by default, override jQuery to use that
+ // for XHR instead. Remove this line when jQuery supports `PATCH` on IE8.
+ if (params.type === 'PATCH' && noXhrPatch) {
+ params.xhr = function() {
+ return new ActiveXObject("Microsoft.XMLHTTP");
+ };
+ }
+
+ // Make the request, allowing the user to override any Ajax options.
+ var xhr = options.xhr = Backbone.ajax(_.extend(params, options));
+ model.trigger('request', model, xhr, options);
+ return xhr;
+ };
+
+ var noXhrPatch = typeof window !== 'undefined' && !!window.ActiveXObject && !(window.XMLHttpRequest && (new XMLHttpRequest).dispatchEvent);
+
+ // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+ var methodMap = {
+ 'create': 'POST',
+ 'update': 'PUT',
+ 'patch': 'PATCH',
+ 'delete': 'DELETE',
+ 'read': 'GET'
+ };
+
+ // Set the default implementation of `Backbone.ajax` to proxy through to `$`.
+ // Override this if you'd like to use a different library.
+ Backbone.ajax = function() {
+ return Backbone.$.ajax.apply(Backbone.$, 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.
+ var Router = 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 optionalParam = /\((.*?)\)/g;
+ var namedParam = /(\(\?)?:\w+/g;
+ var splatParam = /\*\w+/g;
+ var escapeRegExp = /[\-{}\[\]+?.,\\\^$|#\s]/g;
+
+ // Set up all inheritable **Backbone.Router** properties and methods.
+ _.extend(Router.prototype, Events, {
+
+ // Initialize is an empty function by default. Override it with your own
+ // initialization logic.
+ initialize: function(){},
+
+ // Manually bind a single named route to a callback. For example:
+ //
+ // this.route('search/:query/p:num', 'search', function(query, num) {
+ // ...
+ // });
+ //
+ route: function(route, name, callback) {
+ if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+ if (_.isFunction(name)) {
+ callback = name;
+ name = '';
+ }
+ if (!callback) callback = this[name];
+ var router = this;
+ Backbone.history.route(route, function(fragment) {
+ var args = router._extractParameters(route, fragment);
+ callback && callback.apply(router, args);
+ router.trigger.apply(router, ['route:' + name].concat(args));
+ router.trigger('route', name, args);
+ Backbone.history.trigger('route', router, name, args);
+ });
+ return this;
+ },
+
+ // Simple proxy to `Backbone.history` to save a fragment into the history.
+ navigate: function(fragment, options) {
+ Backbone.history.navigate(fragment, options);
+ return this;
+ },
+
+ // Bind all defined routes to `Backbone.history`. We have to reverse the
+ // order of the routes here to support behavior where the most general
+ // routes can be defined at the bottom of the route map.
+ _bindRoutes: function() {
+ if (!this.routes) return;
+ this.routes = _.result(this, 'routes');
+ var route, routes = _.keys(this.routes);
+ while ((route = routes.pop()) != null) {
+ this.route(route, this.routes[route]);
+ }
+ },
+
+ // Convert a route string into a regular expression, suitable for matching
+ // against the current location hash.
+ _routeToRegExp: function(route) {
+ route = route.replace(escapeRegExp, '\\$&')
+ .replace(optionalParam, '(?:$1)?')
+ .replace(namedParam, function(match, optional) {
+ return optional ? match : '([^\/]+)';
+ })
+ .replace(splatParam, '(.*?)');
+ return new RegExp('^' + route + '$');
+ },
+
+ // Given a route, and a URL fragment that it matches, return the array of
+ // extracted decoded parameters. Empty or unmatched parameters will be
+ // treated as `null` to normalize cross-browser behavior.
+ _extractParameters: function(route, fragment) {
+ var params = route.exec(fragment).slice(1);
+ return _.map(params, function(param) {
+ return param ? decodeURIComponent(param) : null;
+ });
+ }
+
+ });
+
+ // Backbone.History
+ // ----------------
+
+ // Handles cross-browser history management, based on either
+ // [pushState](http://diveintohtml5.info/history.html) and real URLs, or
+ // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange)
+ // and URL fragments. If the browser supports neither (old IE, natch),
+ // falls back to polling.
+ var History = Backbone.History = function() {
+ this.handlers = [];
+ _.bindAll(this, 'checkUrl');
+
+ // Ensure that `History` can be used outside of the browser.
+ if (typeof window !== 'undefined') {
+ this.location = window.location;
+ this.history = window.history;
+ }
+ };
+
+ // Cached regex for stripping a leading hash/slash and trailing space.
+ var routeStripper = /^[#\/]|\s+$/g;
+
+ // Cached regex for stripping leading and trailing slashes.
+ var rootStripper = /^\/+|\/+$/g;
+
+ // Cached regex for detecting MSIE.
+ var isExplorer = /msie [\w.]+/;
+
+ // Cached regex for removing a trailing slash.
+ var trailingSlash = /\/$/;
+
+ // Cached regex for stripping urls of hash and query.
+ var pathStripper = /[?#].*$/;
+
+ // Has the history handling already been started?
+ History.started = false;
+
+ // Set up all inheritable **Backbone.History** properties and methods.
+ _.extend(History.prototype, Events, {
+
+ // The default interval to poll for hash changes, if necessary, is
+ // twenty times a second.
+ interval: 50,
+
+ // Gets the true hash value. Cannot use location.hash directly due to bug
+ // in Firefox where location.hash will always be decoded.
+ getHash: function(window) {
+ var match = (window || this).location.href.match(/#(.*)$/);
+ return match ? match[1] : '';
+ },
+
+ // Get the cross-browser normalized URL fragment, either from the URL,
+ // the hash, or the override.
+ getFragment: function(fragment, forcePushState) {
+ if (fragment == null) {
+ if (this._hasPushState || !this._wantsHashChange || forcePushState) {
+ fragment = this.location.pathname;
+ var root = this.root.replace(trailingSlash, '');
+ if (!fragment.indexOf(root)) fragment = fragment.slice(root.length);
+ } else {
+ fragment = this.getHash();
+ }
+ }
+ return fragment.replace(routeStripper, '');
+ },
+
+ // Start the hash change handling, returning `true` if the current URL matches
+ // an existing route, and `false` otherwise.
+ start: function(options) {
+ if (History.started) throw new Error("Backbone.history has already been started");
+ History.started = true;
+
+ // Figure out the initial configuration. Do we need an iframe?
+ // Is pushState desired ... is it available?
+ this.options = _.extend({root: '/'}, this.options, options);
+ this.root = this.options.root;
+ this._wantsHashChange = this.options.hashChange !== false;
+ this._wantsPushState = !!this.options.pushState;
+ this._hasPushState = !!(this.options.pushState && this.history && this.history.pushState);
+ var fragment = this.getFragment();
+ var docMode = document.documentMode;
+ var oldIE = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));
+
+ // Normalize root to always include a leading and trailing slash.
+ this.root = ('/' + this.root + '/').replace(rootStripper, '/');
+
+ if (oldIE && this._wantsHashChange) {
+ this.iframe = Backbone.$('<iframe src="javascript:0" tabindex="-1" />').hide().appendTo('body')[0].contentWindow;
+ this.navigate(fragment);
+ }
+
+ // Depending on whether we're using pushState or hashes, and whether
+ // 'onhashchange' is supported, determine how we check the URL state.
+ if (this._hasPushState) {
+ Backbone.$(window).on('popstate', this.checkUrl);
+ } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
+ Backbone.$(window).on('hashchange', this.checkUrl);
+ } else if (this._wantsHashChange) {
+ this._checkUrlInterval = setInterval(this.checkUrl, this.interval);
+ }
+
+ // Determine if we need to change the base url, for a pushState link
+ // opened by a non-pushState browser.
+ this.fragment = fragment;
+ var loc = this.location;
+ var atRoot = loc.pathname.replace(/[^\/]$/, '$&/') === this.root;
+
+ // Transition from hashChange to pushState or vice versa if both are
+ // requested.
+ if (this._wantsHashChange && this._wantsPushState) {
+
+ // If we've started off with a route from a `pushState`-enabled
+ // browser, but we're currently in a browser that doesn't support it...
+ if (!this._hasPushState && !atRoot) {
+ this.fragment = this.getFragment(null, true);
+ this.location.replace(this.root + this.location.search + '#' + this.fragment);
+ // Return immediately as browser will do redirect to new url
+ return true;
+
+ // Or if we've started out with a hash-based route, but we're currently
+ // in a browser where it could be `pushState`-based instead...
+ } else if (this._hasPushState && atRoot && loc.hash) {
+ this.fragment = this.getHash().replace(routeStripper, '');
+ this.history.replaceState({}, document.title, this.root + this.fragment + loc.search);
+ }
+
+ }
+
+ if (!this.options.silent) return this.loadUrl();
+ },
+
+ // Disable Backbone.history, perhaps temporarily. Not useful in a real app,
+ // but possibly useful for unit testing Routers.
+ stop: function() {
+ Backbone.$(window).off('popstate', this.checkUrl).off('hashchange', this.checkUrl);
+ clearInterval(this._checkUrlInterval);
+ History.started = false;
+ },
+
+ // Add a route to be tested when the fragment changes. Routes added later
+ // may override previous routes.
+ route: function(route, callback) {
+ this.handlers.unshift({route: route, callback: callback});
+ },
+
+ // Checks the current URL to see if it has changed, and if it has,
+ // calls `loadUrl`, normalizing across the hidden iframe.
+ checkUrl: function(e) {
+ var current = this.getFragment();
+ if (current === this.fragment && this.iframe) {
+ current = this.getFragment(this.getHash(this.iframe));
+ }
+ if (current === this.fragment) return false;
+ if (this.iframe) this.navigate(current);
+ this.loadUrl();
+ },
+
+ // Attempt to load the current URL fragment. If a route succeeds with a
+ // match, returns `true`. If no defined routes matches the fragment,
+ // returns `false`.
+ loadUrl: function(fragment) {
+ fragment = this.fragment = this.getFragment(fragment);
+ return _.any(this.handlers, function(handler) {
+ if (handler.route.test(fragment)) {
+ handler.callback(fragment);
+ return true;
+ }
+ });
+ },
+
+ // Save a fragment into the hash history, or replace the URL state if the
+ // 'replace' option is passed. You are responsible for properly URL-encoding
+ // the fragment in advance.
+ //
+ // The options object can contain `trigger: true` if you wish to have the
+ // route callback be fired (not usually desirable), or `replace: true`, if
+ // you wish to modify the current URL without adding an entry to the history.
+ navigate: function(fragment, options) {
+ if (!History.started) return false;
+ if (!options || options === true) options = {trigger: !!options};
+
+ var url = this.root + (fragment = this.getFragment(fragment || ''));
+
+ // Strip the fragment of the query and hash for matching.
+ fragment = fragment.replace(pathStripper, '');
+
+ if (this.fragment === fragment) return;
+ this.fragment = fragment;
+
+ // Don't include a trailing slash on the root.
+ if (fragment === '' && url !== '/') url = url.slice(0, -1);
+
+ // If pushState is available, we use it to set the fragment as a real URL.
+ if (this._hasPushState) {
+ this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url);
+
+ // If hash changes haven't been explicitly disabled, update the hash
+ // fragment to store history.
+ } else if (this._wantsHashChange) {
+ this._updateHash(this.location, fragment, options.replace);
+ if (this.iframe && (fragment !== this.getFragment(this.getHash(this.iframe)))) {
+ // Opening and closing the iframe tricks IE7 and earlier to push a
+ // history entry on hash-tag change. When replace is true, we don't
+ // want this.
+ if(!options.replace) this.iframe.document.open().close();
+ this._updateHash(this.iframe.location, fragment, options.replace);
+ }
+
+ // If you've told us that you explicitly don't want fallback hashchange-
+ // based history, then `navigate` becomes a page refresh.
+ } else {
+ return this.location.assign(url);
+ }
+ if (options.trigger) return this.loadUrl(fragment);
+ },
+
+ // Update the hash location, either replacing the current entry, or adding
+ // a new one to the browser history.
+ _updateHash: function(location, fragment, replace) {
+ if (replace) {
+ var href = location.href.replace(/(javascript:|#).*$/, '');
+ location.replace(href + '#' + fragment);
+ } else {
+ // Some browsers require that `hash` contains a leading #.
+ location.hash = '#' + fragment;
+ }
+ }
+
+ });
+
+ // Create the default Backbone.history.
+ Backbone.history = new History;
+
+ // Helpers
+ // -------
+
+ // Helper function to correctly set up the prototype chain, for subclasses.
+ // Similar to `goog.inherits`, but uses a hash of prototype properties and
+ // class properties to be extended.
+ var extend = function(protoProps, staticProps) {
+ var parent = this;
+ var child;
+
+ // The constructor function for the new subclass is either defined by you
+ // (the "constructor" property in your `extend` definition), or defaulted
+ // by us to simply call the parent's constructor.
+ if (protoProps && _.has(protoProps, 'constructor')) {
+ child = protoProps.constructor;
+ } else {
+ child = function(){ return parent.apply(this, arguments); };
+ }
+
+ // Add static properties to the constructor function, if supplied.
+ _.extend(child, parent, staticProps);
+
+ // Set the prototype chain to inherit from `parent`, without calling
+ // `parent`'s constructor function.
+ var Surrogate = function(){ this.constructor = child; };
+ Surrogate.prototype = parent.prototype;
+ child.prototype = new Surrogate;
+
+ // Add prototype properties (instance properties) to the subclass,
+ // if supplied.
+ if (protoProps) _.extend(child.prototype, protoProps);
+
+ // Set a convenience property in case the parent's prototype is needed
+ // later.
+ child.__super__ = parent.prototype;
+
+ return child;
+ };
+
+ // Set up inheritance for the model, collection, router, view and history.
+ Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend;
+
+ // Throw an error when a URL is needed, and none is supplied.
+ var urlError = function() {
+ throw new Error('A "url" property or function must be specified');
+ };
+
+ // Wrap an optional error callback with a fallback error event.
+ var wrapError = function(model, options) {
+ var error = options.error;
+ options.error = function(resp) {
+ if (error) error(model, resp, options);
+ model.trigger('error', model, resp, options);
+ };
+ };
+
+}).call(this);
</ins></span></pre></div>
<a id="trunksrcwpincludesjsbackboneminjs"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/js/backbone.min.js (27169 => 27170)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/backbone.min.js 2014-02-13 05:09:04 UTC (rev 27169)
+++ trunk/src/wp-includes/js/backbone.min.js 2014-02-13 07:33:29 UTC (rev 27170)
</span><span class="lines">@@ -1,7 +1 @@
</span><del>-// Backbone.js 1.0.0
-
-// (c) 2010-2013 Jeremy Ashkenas, DocumentCloud Inc.
-// Backbone may be freely distributed under the MIT license.
-// For all details and documentation:
-// http://backbonejs.org
-(function(){var t=this;var e=t.Backbone;var i=[];var r=i.push;var s=i.slice;var n=i.splice;var a;if(typeof exports!=="undefined"){a=exports}else{a=t.Backbone={}}a.VERSION="1.0.0";var h=t._;if(!h&&typeof require!=="undefined")h=require("underscore");a.$=t.jQuery||t.Zepto||t.ender||t.$;a.noConflict=function(){t.Backbone=e;return this};a.emulateHTTP=false;a.emulateJSON=false;var o=a.Events={on:function(t,e,i){if(!l(this,"on",t,[e,i])||!e)return this;this._events||(this._events={});var r=this._events[t]||(this._events[t]=[]);r.push({callback:e,context:i,ctx:i||this});return this},once:function(t,e,i){if(!l(this,"once",t,[e,i])||!e)return this;var r=this;var s=h.once(function(){r.off(t,s);e.apply(this,arguments)});s._callback=e;return this.on(t,s,i)},off:function(t,e,i){var r,s,n,a,o,u,c,f;if(!this._events||!l(this,"off",t,[e,i]))return this;if(!t&&!e&&!i){this._events={};return this}a=t?[t]:h.k
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t;countBy","sortBy"];h.each(w,function(t){g.prototype[t]=function(e,i){var r=h.isFunction(e)?e:function(t){return t.get(e)};return h[t](this.models,r,i)}});var b=a.View=function(t){this.cid=h.uniqueId("view");this._configure(t||{});this._ensureElement();this.initialize.apply(this,arguments);this.delegateEvents()};var x=/^(\S+)\s*(.*)$/;var E=["model","collection","el","id","attributes","className","tagName","events"];h.extend(b.prototype,o,{tagName:"div",$:function(t){return this.$el.find(t)},initialize:function(){},render:function(){return this},remove:function(){this.$el.remove();this.stopListening();return this},setElement:function(t,e){if(this.$el)this.undelegateEvents();this.$el=t instanceof a.$?t:a.$(t);this.el=this.$el[0];if(e!==false)this.delegateEvents();return this},delegateEvents:function(t){if(!(t||(t=h.result(this,"events"))))return this;this.unde
legateEvents();for(var e in t){var i=t[e];if(!h.isFunction(i))i=this[t[e]];if(!i)continue;var r=e.match(x);var s=r[1],n=r[2];i=h.bind(i,this);s+=".delegateEvents"+this.cid;if(n===""){this.$el.on(s,i)}else{this.$el.on(s,n,i)}}return this},undelegateEvents:function(){this.$el.off(".delegateEvents"+this.cid);return this},_configure:function(t){if(this.options)t=h.extend({},h.result(this,"options"),t);h.extend(this,h.pick(t,E));this.options=t},_ensureElement:function(){if(!this.el){var t=h.extend({},h.result(this,"attributes"));if(this.id)t.id=h.result(this,"id");if(this.className)t["class"]=h.result(this,"className");var e=a.$("<"+h.result(this,"tagName")+">").attr(t);this.setElement(e,false)}else{this.setElement(h.result(this,"el"),false)}}});a.sync=function(t,e,i){var r=k[t];h.defaults(i||(i={}),{emulateHTTP:a.emulateHTTP,emulateJSON:a.emulateJSON});var s={typ
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));e.trigger("request",e,o,i);return o};var k={create:"POST",update:"PUT",patch:"PATCH","delete":"DELETE",read:"GET"};a.ajax=function(){return a.$.ajax.apply(a.$,arguments)};var S=a.Router=function(t){t||(t={});if(t.routes)this.routes=t.routes;this._bindRoutes();this.initialize.apply(this,arguments)};var $=/\((.*?)\)/g;var T=/(\(\?)?:\w+/g;var H=/\*\w+/g;var A=/[\-{}\[\]+?.,\\\^$|#\s]/g;h.extend(S.prototype,o,{initialize:function(){},route:function(t,e,i){if(!h.isRegExp(t))t=this._routeToRegExp(t);if(h.isFunction(e)){i=e;e=""}if(!i)i=this[e];var r=this;a.history.route(t,function(s){var n=r._extractParameters(t,s);i&&i.apply(r,n);r.trigger.apply(r,["route:"+e].concat(n));r.trigger("route",e,n);a.history.trigger("route",r,e,n)});return this},navigate:function(t,e){a.history.navigate(t,e);return this},_bindRoutes:function(){if(!this.routes)return;this.routes=h.result(th
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this._wantsHashChange&&"onhashchange"in window&&!r){a.$(window).on("hashchange",this.checkUrl)}else if(this._wantsHashChange){this._checkUrlInterval=setInterval(this.checkUrl,this.interval)}this.fragment=e;var s=this.location;var n=s.pathname.replace(/[^\/]$/,"$&/")===this.root;if(this._wantsHashChange&&this._wantsPushState&&!this._hasPushState&&!n){this.fragment=this.getFragment(null,true);this.location.replace(this.root+this.location.search+"#"+this.fragment);return true}else if(this._wantsPushState&&this._hasPushState&&n&&s.hash){this.fragment=this.getHash().replace(N,"");this.history.replaceState({},document.title,this.root+this.fragment+s.search)}if(!this.options.silent)return this.loadUrl()},stop:function(){a.$(window).off("popstate",this.checkUrl).off("hashchange",this.checkUrl);clearInterval(this._checkUrlInterval);I.started=false},route:f
unction(t,e){this.handlers.unshift({route:t,callback:e})},checkUrl:function(t){var e=this.getFragment();if(e===this.fragment&&this.iframe){e=this.getFragment(this.getHash(this.iframe))}if(e===this.fragment)return false;if(this.iframe)this.navigate(e);this.loadUrl()||this.loadUrl(this.getHash())},loadUrl:function(t){var e=this.fragment=this.getFragment(t);var i=h.any(this.handlers,function(t){if(t.route.test(e)){t.callback(e);return true}});return i},navigate:function(t,e){if(!I.started)return false;if(!e||e===true)e={trigger:e};t=this.getFragment(t||"");if(this.fragment===t)return;this.fragment=t;var i=this.root+t;if(this._hasPushState){this.history[e.replace?"replaceState":"pushState"]({},document.title,i)}else if(this._wantsHashChange){this._updateHash(this.location,t,e.replace);if(this.iframe&&t!==this.getFragment(this.getHash(this.iframe))){if(!e.replace)this.iframe.document.open().close();this._updateHash(this.iframe.location,t,e.re
place)}}else{return this.location.assign(i)}if(e.trigger)this.loadUrl(t)},_updateHash:function(t,e,i){if(i){var r=t.href.replace(/(javascript:|#).*$/,"");t.replace(r+"#"+e)}else{t.hash="#"+e}}});a.history=new I;var j=function(t,e){var i=this;var r;if(t&&h.has(t,"constructor")){r=t.constructor}else{r=function(){return i.apply(this,arguments)}}h.extend(r,i,e);var s=function(){this.constructor=r};s.prototype=i.prototype;r.prototype=new s;if(t)h.extend(r.prototype,t);r.__super__=i.prototype;return r};d.extend=g.extend=S.extend=b.extend=I.extend=j;var U=function(){throw new Error('A "url" property or function must be specified')};var R=function(t,e){var i=e.error;e.error=function(r){if(i)i(t,r,e);t.trigger("error",t,r,e)}}}).call(this);
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n.length;a<h;a++){t[e].apply(t,[n[a]].concat(r))}return false}return true};var c=function(t,e){var i,r=-1,s=t.length,n=e[0],a=e[1],h=e[2];switch(e.length){case 0:while(++r<s)(i=t[r]).callback.call(i.ctx);return;case 1:while(++r<s)(i=t[r]).callback.call(i.ctx,n);return;case 2:while(++r<s)(i=t[r]).callback.call(i.ctx,n,a);return;case 3:while(++r<s)(i=t[r]).callback.call(i.ctx,n,a,h);return;default:while(++r<s)(i=t[r]).callback.apply(i.ctx,e)}};var f={listenTo:"on",listenToOnce:"once"};h.each(f,function(t,e){o[e]=function(e,i,r){var s=this._listeningTo||(this._listeningTo={});var n=e._listenId||(e._listenId=h.uniqueId("l"));s[n]=e;if(!r&&typeof i==="object")r=this;e[t](i,r,this);return this}});o.bind=o.on;o.unbind=o.off;h.extend(a,o);var d=a.Model=function(t,e){var i=t||{};e||(e={});this.cid=h.uniqueId("c");this.attributes={};if(e.collection)this.collection=e.collection;if(e.parse)i=this.parse(i,e)||{};i=h.defa
ults({},i,h.result(this,"defaults"));this.set(i,e);this.changed={};this.initialize.apply(this,arguments)};h.extend(d.prototype,o,{changed:null,validationError:null,idAttribute:"id",initialize:function(){},toJSON:function(t){return h.clone(this.attributes)},sync:function(){return a.sync.apply(this,arguments)},get:function(t){return this.attributes[t]},escape:function(t){return h.escape(this.get(t))},has:function(t){return this.get(t)!=null},set:function(t,e,i){var r,s,n,a,o,u,l,c;if(t==null)return this;if(typeof t==="object"){s=t;i=e}else{(s={})[t]=e}i||(i={});if(!this._validate(s,i))return false;n=i.unset;o=i.silent;a=[];u=this._changing;this._changing=true;if(!u){this._previousAttributes=h.clone(this.attributes);this.changed={}}c=this.attributes,l=this._previousAttributes;if(this.idAttribute in s)this.id=s[this.idAttribute];for(r in s){e=s[r];if(!h.isEqual(c[r],e))a.push(r);if(!h.isEqual(l[r],e)){this.changed[r]=e}else{delete this.changed[r]}n?delete c
[r]:c[r]=e}if(!o){if(a.length)this._pending=true;for(var f=0,d=a.length;f<d;f++){this.trigger("change:"+a[f],this,c[a[f]],i)}}if(u)return this;if(!o){while(this._pending){this._pending=false;this.trigger("change",this,i)}}this._pending=false;this._changing=false;return this},unset:function(t,e){return this.set(t,void 0,h.extend({},e,{unset:true}))},clear:function(t){var e={};for(var i in this.attributes)e[i]=void 0;return this.set(e,h.extend({},t,{unset:true}))},hasChanged:function(t){if(t==null)return!h.isEmpty(this.changed);return h.has(this.changed,t)},changedAttributes:function(t){if(!t)return this.hasChanged()?h.clone(this.changed):false;var e,i=false;var r=this._changing?this._previousAttributes:this.attributes;for(var s in t){if(h.isEqual(r[s],e=t[s]))continue;(i||(i={}))[s]=e}return i},previous:function(t){if(t==null||!this._previousAttributes)return null;return this._previousAttributes[t]},previousAttributes:function(){return h.clone(this._previousAtt
ributes)},fetch:function(t){t=t?h.clone(t):{};if(t.parse===void 0)t.parse=true;var e=this;var i=t.success;t.success=function(r){if(!e.set(e.parse(r,t),t))return false;if(i)i(e,r,t);e.trigger("sync",e,r,t)};M(this,t);return this.sync("read",this,t)},save:function(t,e,i){var r,s,n,a=this.attributes;if(t==null||typeof t==="object"){r=t;i=e}else{(r={})[t]=e}i=h.extend({validate:true},i);if(r&&!i.wait){if(!this.set(r,i))return false}else{if(!this._validate(r,i))return false}if(r&&i.wait){this.attributes=h.extend({},a,r)}if(i.parse===void 0)i.parse=true;var o=this;var u=i.success;i.success=function(t){o.attributes=a;var e=o.parse(t,i);if(i.wait)e=h.extend(r||{},e);if(h.isObject(e)&&!o.set(e,i)){return false}if(u)u(o,t,i);o.trigger("sync",o,t,i)};M(this,i);s=this.isNew()?"create":i.patch?"patch":"update";if(s==="patch")i.attrs=r;n=this.sync(s,this,i);if(r&&i.wait)this.attributes=
a;return n},destroy:function(t){t=t?h.clone(t):{};var e=this;var i=t.success;var r=function(){e.trigger("destroy",e,e.collection,t)};t.success=function(s){if(t.wait||e.isNew())r();if(i)i(e,s,t);if(!e.isNew())e.trigger("sync",e,s,t)};if(this.isNew()){t.success();return false}M(this,t);var s=this.sync("delete",this,t);if(!t.wait)r();return s},url:function(){var t=h.result(this,"urlRoot")||h.result(this.collection,"url")||U();if(this.isNew())return t;return t+(t.charAt(t.length-1)==="/"?"":"/")+encodeURIComponent(this.id)},parse:function(t,e){return t},clone:function(){return new this.constructor(this.attributes)},isNew:function(){return this.id==null},isValid:function(t){return this._validate({},h.extend(t||{},{validate:true}))},_validate:function(t,e){if(!e.validate||!this.validate)return true;t=h.extend({},this.attributes,t);var i=this.validationError=this.validate(t,e)||null;if(!i)return true;this.trigg
er("invalid",this,i,h.extend(e,{validationError:i}));return false}});var p=["keys","values","pairs","invert","pick","omit"];h.each(p,function(t){d.prototype[t]=function(){var e=s.call(arguments);e.unshift(this.attributes);return h[t].apply(h,e)}});var v=a.Collection=function(t,e){e||(e={});if(e.model)this.model=e.model;if(e.comparator!==void 0)this.comparator=e.comparator;this._reset();this.initialize.apply(this,arguments);if(t)this.reset(t,h.extend({silent:true},e))};var g={add:true,remove:true,merge:true};var m={add:true,remove:false};h.extend(v.prototype,o,{model:d,initialize:function(){},toJSON:function(t){return this.map(function(e){return e.toJSON(t)})},sync:function(){return a.sync.apply(this,arguments)},add:function(t,e){return this.set(t,h.extend({merge:false},e,m))},remove:function(t,e){var i=!h.isArray(t);t=i?[t]:h.clone(t);e||(e={});var r,s,n,a;for(r=0,s=t.length;r<s;r++){a=t[r]=this.get(t[r]);if(!a
)continue;delete this._byId[a.id];delete this._byId[a.cid];n=this.indexOf(a);this.models.splice(n,1);this.length--;if(!e.silent){e.index=n;a.trigger("remove",a,this,e)}this._removeReference(a)}return i?t[0]:t},set:function(t,e){e=h.defaults({},e,g);if(e.parse)t=this.parse(t,e);var i=!h.isArray(t);t=i?t?[t]:[]:h.clone(t);var r,s,n,a,o,u,l;var c=e.at;var f=this.model;var p=this.comparator&&c==null&&e.sort!==false;var v=h.isString(this.comparator)?this.comparator:null;var m=[],y=[],_={};var w=e.add,b=e.merge,x=e.remove;var E=!p&&w&&x?[]:false;for(r=0,s=t.length;r<s;r++){o=t[r];if(o instanceof d){n=a=o}else{n=o[f.prototype.idAttribute]}if(u=this.get(n)){if(x)_[u.cid]=true;if(b){o=o===a?a.attributes:o;if(e.parse)o=u.parse(o,e);u.set(o,e);if(p&&!l&&u.hasChanged(v))l=true}t[r]=u}else if(w){a=t[r]=this._prepareModel(o,e);if(!a)continue;m.push(a);a.on("all",this._onModelEvent,this);this._byId[a.cid]=a;if(a.id!=null)this._
byId[a.id]=a}if(E)E.push(u||a)}if(x){for(r=0,s=this.length;r<s;++r){if(!_[(a=this.models[r]).cid])y.push(a)}if(y.length)this.remove(y,e)}if(m.length||E&&E.length){if(p)l=true;this.length+=m.length;if(c!=null){for(r=0,s=m.length;r<s;r++){this.models.splice(c+r,0,m[r])}}else{if(E)this.models.length=0;var T=E||m;for(r=0,s=T.length;r<s;r++){this.models.push(T[r])}}}if(l)this.sort({silent:true});if(!e.silent){for(r=0,s=m.length;r<s;r++){(a=m[r]).trigger("add",a,this,e)}if(l||E&&E.length)this.trigger("sort",this,e)}return i?t[0]:t},reset:function(t,e){e||(e={});for(var i=0,r=this.models.length;i<r;i++){this._removeReference(this.models[i])}e.previousModels=this.models;this._reset();t=this.add(t,h.extend({silent:true},e));if(!e.silent)this.trigger("reset",this,e);return t},push:function(t,e){return this.add(t,h.extend({at:this.length},e))},pop:function(t){var e=this.at(this.length-1);this.remove(e,t);return e},unshift:function(t,
e){return this.add(t,h.extend({at:0},e))},shift:function(t){var e=this.at(0);this.remove(e,t);return e},slice:function(){return s.apply(this.models,arguments)},get:function(t){if(t==null)return void 0;return this._byId[t.id]||this._byId[t.cid]||this._byId[t]},at:function(t){return this.models[t]},where:function(t,e){if(h.isEmpty(t))return e?void 0:[];return this[e?"find":"filter"](function(e){for(var i in t){if(t[i]!==e.get(i))return false}return true})},findWhere:function(t){return this.where(t,true)},sort:function(t){if(!this.comparator)throw new Error("Cannot sort a set without a comparator");t||(t={});if(h.isString(this.comparator)||this.comparator.length===1){this.models=this.sortBy(this.comparator,this)}else{this.models.sort(h.bind(this.comparator,this))}if(!t.silent)this.trigger("sort",this,t);return this},pluck:function(t){return h.invoke(this.models,"get",t)},fetch:function(t){t=t?h.clone(t):{};if(t.parse===void 0)t.parse=tr
ue;var e=t.success;var i=this;t.success=function(r){var s=t.reset?"reset":"set";i[s](r,t);if(e)e(i,r,t);i.trigger("sync",i,r,t)};M(this,t);return this.sync("read",this,t)},create:function(t,e){e=e?h.clone(e):{};if(!(t=this._prepareModel(t,e)))return false;if(!e.wait)this.add(t,e);var i=this;var r=e.success;e.success=function(t,e,s){if(s.wait)i.add(t,s);if(r)r(t,e,s)};t.save(null,e);return t},parse:function(t,e){return t},clone:function(){return new this.constructor(this.models)},_reset:function(){this.length=0;this.models=[];this._byId={}},_prepareModel:function(t,e){if(t instanceof d){if(!t.collection)t.collection=this;return t}e=e?h.clone(e):{};e.collection=this;var i=new this.model(t,e);if(!i.validationError)return i;this.trigger("invalid",this,i.validationError,e);return false},_removeReference:function(t){if(this===t.collection)delete t.collection;t.off("all",this._onModelEvent,this)},_onModelEvent:function(t,e,i,r){if
((t==="add"||t==="remove")&&i!==this)return;if(t==="destroy")this.remove(e,r);if(e&&t==="change:"+e.idAttribute){delete this._byId[e.previous(e.idAttribute)];if(e.id!=null)this._byId[e.id]=e}this.trigger.apply(this,arguments)}});var y=["forEach","each","map","collect","reduce","foldl","inject","reduceRight","foldr","find","detect","filter","select","reject","every","all","some","any","include","contains","invoke","max","min","toArray","size","first","head","take","initial","rest","tail","drop","last","without","difference","indexOf","shuffle","lastIndexOf"
;,"isEmpty","chain"];h.each(y,function(t){v.prototype[t]=function(){var e=s.call(arguments);e.unshift(this.models);return h[t].apply(h,e)}});var _=["groupBy","countBy","sortBy"];h.each(_,function(t){v.prototype[t]=function(e,i){var r=h.isFunction(e)?e:function(t){return t.get(e)};return h[t](this.models,r,i)}});var w=a.View=function(t){this.cid=h.uniqueId("view");t||(t={});h.extend(this,h.pick(t,x));this._ensureElement();this.initialize.apply(this,arguments);this.delegateEvents()};var b=/^(\S+)\s*(.*)$/;var x=["model","collection","el","id","attributes","className","tagName","events"];h.extend(w.prototype,o,{tagName:"div",$:function(t){return this.$el.find(t)},initialize:function(){},render:function(){return this},remove:function(){this.$el.remove();this.stopListening();return this},setElement:function(t,e){if(this.$el)this.undelegateE
vents();this.$el=t instanceof a.$?t:a.$(t);this.el=this.$el[0];if(e!==false)this.delegateEvents();return this},delegateEvents:function(t){if(!(t||(t=h.result(this,"events"))))return this;this.undelegateEvents();for(var e in t){var i=t[e];if(!h.isFunction(i))i=this[t[e]];if(!i)continue;var r=e.match(b);var s=r[1],n=r[2];i=h.bind(i,this);s+=".delegateEvents"+this.cid;if(n===""){this.$el.on(s,i)}else{this.$el.on(s,n,i)}}return this},undelegateEvents:function(){this.$el.off(".delegateEvents"+this.cid);return this},_ensureElement:function(){if(!this.el){var t=h.extend({},h.result(this,"attributes"));if(this.id)t.id=h.result(this,"id");if(this.className)t["class"]=h.result(this,"className");var e=a.$("<"+h.result(this,"tagName")+">").attr(t);this.setElement(e,false)}else{this.setElement(h.result(this,"el"),false)}}});a.sync=function(t,e,i){var r=T[t];h.defaults(i||
(i={}),{emulateHTTP:a.emulateHTTP,emulateJSON:a.emulateJSON});var s={type:r,dataType:"json"};if(!i.url){s.url=h.result(e,"url")||U()}if(i.data==null&&e&&(t==="create"||t==="update"||t==="patch")){s.contentType="application/json";s.data=JSON.stringify(i.attrs||e.toJSON(i))}if(i.emulateJSON){s.contentType="application/x-www-form-urlencoded";s.data=s.data?{model:s.data}:{}}if(i.emulateHTTP&&(r==="PUT"||r==="DELETE"||r==="PATCH")){s.type="POST";if(i.emulateJSON)s.data._method=r;var n=i.beforeSend;i.beforeSend=function(t){t.setRequestHeader("X-HTTP-Method-Override",r);if(n)return n.apply(this,arguments)}}if(s.type!=="GET"&&!i.emulateJSON){s.processData=false}if(s.type==="PATCH"&&E){s.xhr=function(){return new ActiveXObject("Microsoft.XMLHTTP")}}var o=i.xhr=a.ajax(h.extend(s,i));e.trigger("request
",e,o,i);return o};var E=typeof window!=="undefined"&&!!window.ActiveXObject&&!(window.XMLHttpRequest&&(new XMLHttpRequest).dispatchEvent);var T={create:"POST",update:"PUT",patch:"PATCH","delete":"DELETE",read:"GET"};a.ajax=function(){return a.$.ajax.apply(a.$,arguments)};var k=a.Router=function(t){t||(t={});if(t.routes)this.routes=t.routes;this._bindRoutes();this.initialize.apply(this,arguments)};var S=/\((.*?)\)/g;var $=/(\(\?)?:\w+/g;var H=/\*\w+/g;var A=/[\-{}\[\]+?.,\\\^$|#\s]/g;h.extend(k.prototype,o,{initialize:function(){},route:function(t,e,i){if(!h.isRegExp(t))t=this._routeToRegExp(t);if(h.isFunction(e)){i=e;e=""}if(!i)i=this[e];var r=this;a.history.route(t,function(s){var n=r._extractParameters(t,s);i&&i.apply(r,n);r.trigger.apply(r,["route:"+e].concat(n));r.trigger("route",e,n);a.history.trigger("route",r,e,n)});return this},n
avigate:function(t,e){a.history.navigate(t,e);return this},_bindRoutes:function(){if(!this.routes)return;this.routes=h.result(this,"routes");var t,e=h.keys(this.routes);while((t=e.pop())!=null){this.route(t,this.routes[t])}},_routeToRegExp:function(t){t=t.replace(A,"\\$&").replace(S,"(?:$1)?").replace($,function(t,e){return e?t:"([^/]+)"}).replace(H,"(.*?)");return new RegExp("^"+t+"$")},_extractParameters:function(t,e){var i=t.exec(e).slice(1);return h.map(i,function(t){return t?decodeURIComponent(t):null})}});var I=a.History=function(){this.handlers=[];h.bindAll(this,"checkUrl");if(typeof window!=="undefined"){this.location=window.location;this.history=window.history}};var N=/^[#\/]|\s+$/g;var O=/^\/+|\/+$/g;var P=/msie [\w.]+/;var C=/\/$/;var j=/[?#].*$/;I.started=false;h.extend(I.prototype,o,{interval:50,getHash:function(t){var e=(t||this).location.href.match(/#(.*)$/);return e?e[1]:&qu
ot;"},getFragment:function(t,e){if(t==null){if(this._hasPushState||!this._wantsHashChange||e){t=this.location.pathname;var i=this.root.replace(C,"");if(!t.indexOf(i))t=t.slice(i.length)}else{t=this.getHash()}}return t.replace(N,"")},start:function(t){if(I.started)throw new Error("Backbone.history has already been started");I.started=true;this.options=h.extend({root:"/"},this.options,t);this.root=this.options.root;this._wantsHashChange=this.options.hashChange!==false;this._wantsPushState=!!this.options.pushState;this._hasPushState=!!(this.options.pushState&&this.history&&this.history.pushState);var e=this.getFragment();var i=document.documentMode;var r=P.exec(navigator.userAgent.toLowerCase())&&(!i||i<=7);this.root=("/"+this.root+"/").replace(O,"/");if(r&&this._wantsHashChange){this.iframe=a.$('<iframe src="javascript:0" tabindex="-1" />').hide().app
endTo("body")[0].contentWindow;this.navigate(e)}if(this._hasPushState){a.$(window).on("popstate",this.checkUrl)}else if(this._wantsHashChange&&"onhashchange"in window&&!r){a.$(window).on("hashchange",this.checkUrl)}else if(this._wantsHashChange){this._checkUrlInterval=setInterval(this.checkUrl,this.interval)}this.fragment=e;var s=this.location;var n=s.pathname.replace(/[^\/]$/,"$&/")===this.root;if(this._wantsHashChange&&this._wantsPushState){if(!this._hasPushState&&!n){this.fragment=this.getFragment(null,true);this.location.replace(this.root+this.location.search+"#"+this.fragment);return true}else if(this._hasPushState&&n&&s.hash){this.fragment=this.getHash().replace(N,"");this.history.replaceState({},document.title,this.root+this.fragment+s.search)}}if(!this.options.silent)return this.loadUrl()},stop:function(){a.$(window).off("popstate",this.checkUrl
).off("hashchange",this.checkUrl);clearInterval(this._checkUrlInterval);I.started=false},route:function(t,e){this.handlers.unshift({route:t,callback:e})},checkUrl:function(t){var e=this.getFragment();if(e===this.fragment&&this.iframe){e=this.getFragment(this.getHash(this.iframe))}if(e===this.fragment)return false;if(this.iframe)this.navigate(e);this.loadUrl()},loadUrl:function(t){t=this.fragment=this.getFragment(t);return h.any(this.handlers,function(e){if(e.route.test(t)){e.callback(t);return true}})},navigate:function(t,e){if(!I.started)return false;if(!e||e===true)e={trigger:!!e};var i=this.root+(t=this.getFragment(t||""));t=t.replace(j,"");if(this.fragment===t)return;this.fragment=t;if(t===""&&i!=="/")i=i.slice(0,-1);if(this._hasPushState){this.history[e.replace?"replaceState":"pushState"]({},document.title,i)}else if(this._wantsHashChange){this._updateHash(this.location,t,e.replace);if(this.if
rame&&t!==this.getFragment(this.getHash(this.iframe))){if(!e.replace)this.iframe.document.open().close();this._updateHash(this.iframe.location,t,e.replace)}}else{return this.location.assign(i)}if(e.trigger)return this.loadUrl(t)},_updateHash:function(t,e,i){if(i){var r=t.href.replace(/(javascript:|#).*$/,"");t.replace(r+"#"+e)}else{t.hash="#"+e}}});a.history=new I;var R=function(t,e){var i=this;var r;if(t&&h.has(t,"constructor")){r=t.constructor}else{r=function(){return i.apply(this,arguments)}}h.extend(r,i,e);var s=function(){this.constructor=r};s.prototype=i.prototype;r.prototype=new s;if(t)h.extend(r.prototype,t);r.__super__=i.prototype;return r};d.extend=v.extend=k.extend=w.extend=I.extend=R;var U=function(){throw new Error('A "url" property or function must be specified')};var M=function(t,e){var i=e.error;e.error=function(r){if(i)i(t,r,e);t.trigger("error",t,r,e)}}}).call(this);
</ins></span></pre></div>
<a id="trunksrcwpincludesjsunderscorejs"></a>
<div class="addfile"><h4>Added: trunk/src/wp-includes/js/underscore.js (0 => 27170)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/underscore.js (rev 0)
+++ trunk/src/wp-includes/js/underscore.js 2014-02-13 07:33:29 UTC (rev 27170)
</span><span class="lines">@@ -0,0 +1,1343 @@
</span><ins>+// Underscore.js 1.6.0
+// http://underscorejs.org
+// (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+// Underscore may be freely distributed under the MIT license.
+
+(function() {
+
+ // Baseline setup
+ // --------------
+
+ // Establish the root object, `window` in the browser, or `exports` on the server.
+ var root = this;
+
+ // Save the previous value of the `_` variable.
+ var previousUnderscore = root._;
+
+ // Establish the object that gets returned to break out of a loop iteration.
+ var breaker = {};
+
+ // Save bytes in the minified (but not gzipped) version:
+ var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+
+ // Create quick reference variables for speed access to core prototypes.
+ var
+ push = ArrayProto.push,
+ slice = ArrayProto.slice,
+ concat = ArrayProto.concat,
+ toString = ObjProto.toString,
+ hasOwnProperty = ObjProto.hasOwnProperty;
+
+ // All **ECMAScript 5** native function implementations that we hope to use
+ // are declared here.
+ var
+ nativeForEach = ArrayProto.forEach,
+ nativeMap = ArrayProto.map,
+ nativeReduce = ArrayProto.reduce,
+ nativeReduceRight = ArrayProto.reduceRight,
+ nativeFilter = ArrayProto.filter,
+ nativeEvery = ArrayProto.every,
+ nativeSome = ArrayProto.some,
+ nativeIndexOf = ArrayProto.indexOf,
+ nativeLastIndexOf = ArrayProto.lastIndexOf,
+ nativeIsArray = Array.isArray,
+ nativeKeys = Object.keys,
+ nativeBind = FuncProto.bind;
+
+ // Create a safe reference to the Underscore object for use below.
+ var _ = function(obj) {
+ if (obj instanceof _) return obj;
+ if (!(this instanceof _)) return new _(obj);
+ this._wrapped = obj;
+ };
+
+ // Export the Underscore object for **Node.js**, with
+ // backwards-compatibility for the old `require()` API. If we're in
+ // the browser, add `_` as a global object via a string identifier,
+ // for Closure Compiler "advanced" mode.
+ if (typeof exports !== 'undefined') {
+ if (typeof module !== 'undefined' && module.exports) {
+ exports = module.exports = _;
+ }
+ exports._ = _;
+ } else {
+ root._ = _;
+ }
+
+ // Current version.
+ _.VERSION = '1.6.0';
+
+ // Collection Functions
+ // --------------------
+
+ // The cornerstone, an `each` implementation, aka `forEach`.
+ // Handles objects with the built-in `forEach`, arrays, and raw objects.
+ // Delegates to **ECMAScript 5**'s native `forEach` if available.
+ var each = _.each = _.forEach = function(obj, iterator, context) {
+ if (obj == null) return obj;
+ if (nativeForEach && obj.forEach === nativeForEach) {
+ obj.forEach(iterator, context);
+ } else if (obj.length === +obj.length) {
+ for (var i = 0, length = obj.length; i < length; i++) {
+ if (iterator.call(context, obj[i], i, obj) === breaker) return;
+ }
+ } else {
+ var keys = _.keys(obj);
+ for (var i = 0, length = keys.length; i < length; i++) {
+ if (iterator.call(context, obj[keys[i]], keys[i], obj) === breaker) return;
+ }
+ }
+ return obj;
+ };
+
+ // Return the results of applying the iterator to each element.
+ // Delegates to **ECMAScript 5**'s native `map` if available.
+ _.map = _.collect = function(obj, iterator, context) {
+ var results = [];
+ if (obj == null) return results;
+ if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+ each(obj, function(value, index, list) {
+ results.push(iterator.call(context, value, index, list));
+ });
+ return results;
+ };
+
+ var reduceError = 'Reduce of empty array with no initial value';
+
+ // **Reduce** builds up a single result from a list of values, aka `inject`,
+ // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
+ _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+ var initial = arguments.length > 2;
+ if (obj == null) obj = [];
+ if (nativeReduce && obj.reduce === nativeReduce) {
+ if (context) iterator = _.bind(iterator, context);
+ return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
+ }
+ each(obj, function(value, index, list) {
+ if (!initial) {
+ memo = value;
+ initial = true;
+ } else {
+ memo = iterator.call(context, memo, value, index, list);
+ }
+ });
+ if (!initial) throw new TypeError(reduceError);
+ return memo;
+ };
+
+ // The right-associative version of reduce, also known as `foldr`.
+ // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
+ _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+ var initial = arguments.length > 2;
+ if (obj == null) obj = [];
+ if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+ if (context) iterator = _.bind(iterator, context);
+ return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+ }
+ var length = obj.length;
+ if (length !== +length) {
+ var keys = _.keys(obj);
+ length = keys.length;
+ }
+ each(obj, function(value, index, list) {
+ index = keys ? keys[--length] : --length;
+ if (!initial) {
+ memo = obj[index];
+ initial = true;
+ } else {
+ memo = iterator.call(context, memo, obj[index], index, list);
+ }
+ });
+ if (!initial) throw new TypeError(reduceError);
+ return memo;
+ };
+
+ // Return the first value which passes a truth test. Aliased as `detect`.
+ _.find = _.detect = function(obj, predicate, context) {
+ var result;
+ any(obj, function(value, index, list) {
+ if (predicate.call(context, value, index, list)) {
+ result = value;
+ return true;
+ }
+ });
+ return result;
+ };
+
+ // Return all the elements that pass a truth test.
+ // Delegates to **ECMAScript 5**'s native `filter` if available.
+ // Aliased as `select`.
+ _.filter = _.select = function(obj, predicate, context) {
+ var results = [];
+ if (obj == null) return results;
+ if (nativeFilter && obj.filter === nativeFilter) return obj.filter(predicate, context);
+ each(obj, function(value, index, list) {
+ if (predicate.call(context, value, index, list)) results.push(value);
+ });
+ return results;
+ };
+
+ // Return all the elements for which a truth test fails.
+ _.reject = function(obj, predicate, context) {
+ return _.filter(obj, function(value, index, list) {
+ return !predicate.call(context, value, index, list);
+ }, context);
+ };
+
+ // Determine whether all of the elements match a truth test.
+ // Delegates to **ECMAScript 5**'s native `every` if available.
+ // Aliased as `all`.
+ _.every = _.all = function(obj, predicate, context) {
+ predicate || (predicate = _.identity);
+ var result = true;
+ if (obj == null) return result;
+ if (nativeEvery && obj.every === nativeEvery) return obj.every(predicate, context);
+ each(obj, function(value, index, list) {
+ if (!(result = result && predicate.call(context, value, index, list))) return breaker;
+ });
+ return !!result;
+ };
+
+ // Determine if at least one element in the object matches a truth test.
+ // Delegates to **ECMAScript 5**'s native `some` if available.
+ // Aliased as `any`.
+ var any = _.some = _.any = function(obj, predicate, context) {
+ predicate || (predicate = _.identity);
+ var result = false;
+ if (obj == null) return result;
+ if (nativeSome && obj.some === nativeSome) return obj.some(predicate, context);
+ each(obj, function(value, index, list) {
+ if (result || (result = predicate.call(context, value, index, list))) return breaker;
+ });
+ return !!result;
+ };
+
+ // Determine if the array or object contains a given value (using `===`).
+ // Aliased as `include`.
+ _.contains = _.include = function(obj, target) {
+ if (obj == null) return false;
+ if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+ return any(obj, function(value) {
+ return value === target;
+ });
+ };
+
+ // Invoke a method (with arguments) on every item in a collection.
+ _.invoke = function(obj, method) {
+ var args = slice.call(arguments, 2);
+ var isFunc = _.isFunction(method);
+ return _.map(obj, function(value) {
+ return (isFunc ? method : value[method]).apply(value, args);
+ });
+ };
+
+ // Convenience version of a common use case of `map`: fetching a property.
+ _.pluck = function(obj, key) {
+ return _.map(obj, _.property(key));
+ };
+
+ // Convenience version of a common use case of `filter`: selecting only objects
+ // containing specific `key:value` pairs.
+ _.where = function(obj, attrs) {
+ return _.filter(obj, _.matches(attrs));
+ };
+
+ // Convenience version of a common use case of `find`: getting the first object
+ // containing specific `key:value` pairs.
+ _.findWhere = function(obj, attrs) {
+ return _.find(obj, _.matches(attrs));
+ };
+
+ // Return the maximum element or (element-based computation).
+ // Can't optimize arrays of integers longer than 65,535 elements.
+ // See [WebKit Bug 80797](https://bugs.webkit.org/show_bug.cgi?id=80797)
+ _.max = function(obj, iterator, context) {
+ if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+ return Math.max.apply(Math, obj);
+ }
+ var result = -Infinity, lastComputed = -Infinity;
+ each(obj, function(value, index, list) {
+ var computed = iterator ? iterator.call(context, value, index, list) : value;
+ if (computed > lastComputed) {
+ result = value;
+ lastComputed = computed;
+ }
+ });
+ return result;
+ };
+
+ // Return the minimum element (or element-based computation).
+ _.min = function(obj, iterator, context) {
+ if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+ return Math.min.apply(Math, obj);
+ }
+ var result = Infinity, lastComputed = Infinity;
+ each(obj, function(value, index, list) {
+ var computed = iterator ? iterator.call(context, value, index, list) : value;
+ if (computed < lastComputed) {
+ result = value;
+ lastComputed = computed;
+ }
+ });
+ return result;
+ };
+
+ // Shuffle an array, using the modern version of the
+ // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
+ _.shuffle = function(obj) {
+ var rand;
+ var index = 0;
+ var shuffled = [];
+ each(obj, function(value) {
+ rand = _.random(index++);
+ shuffled[index - 1] = shuffled[rand];
+ shuffled[rand] = value;
+ });
+ return shuffled;
+ };
+
+ // Sample **n** random values from a collection.
+ // If **n** is not specified, returns a single random element.
+ // The internal `guard` argument allows it to work with `map`.
+ _.sample = function(obj, n, guard) {
+ if (n == null || guard) {
+ if (obj.length !== +obj.length) obj = _.values(obj);
+ return obj[_.random(obj.length - 1)];
+ }
+ return _.shuffle(obj).slice(0, Math.max(0, n));
+ };
+
+ // An internal function to generate lookup iterators.
+ var lookupIterator = function(value) {
+ if (value == null) return _.identity;
+ if (_.isFunction(value)) return value;
+ return _.property(value);
+ };
+
+ // Sort the object's values by a criterion produced by an iterator.
+ _.sortBy = function(obj, iterator, context) {
+ iterator = lookupIterator(iterator);
+ return _.pluck(_.map(obj, function(value, index, list) {
+ return {
+ value: value,
+ index: index,
+ criteria: iterator.call(context, value, index, list)
+ };
+ }).sort(function(left, right) {
+ var a = left.criteria;
+ var b = right.criteria;
+ if (a !== b) {
+ if (a > b || a === void 0) return 1;
+ if (a < b || b === void 0) return -1;
+ }
+ return left.index - right.index;
+ }), 'value');
+ };
+
+ // An internal function used for aggregate "group by" operations.
+ var group = function(behavior) {
+ return function(obj, iterator, context) {
+ var result = {};
+ iterator = lookupIterator(iterator);
+ each(obj, function(value, index) {
+ var key = iterator.call(context, value, index, obj);
+ behavior(result, key, value);
+ });
+ return result;
+ };
+ };
+
+ // Groups the object's values by a criterion. Pass either a string attribute
+ // to group by, or a function that returns the criterion.
+ _.groupBy = group(function(result, key, value) {
+ _.has(result, key) ? result[key].push(value) : result[key] = [value];
+ });
+
+ // Indexes the object's values by a criterion, similar to `groupBy`, but for
+ // when you know that your index values will be unique.
+ _.indexBy = group(function(result, key, value) {
+ result[key] = value;
+ });
+
+ // Counts instances of an object that group by a certain criterion. Pass
+ // either a string attribute to count by, or a function that returns the
+ // criterion.
+ _.countBy = group(function(result, key) {
+ _.has(result, key) ? result[key]++ : result[key] = 1;
+ });
+
+ // Use a comparator function to figure out the smallest index at which
+ // an object should be inserted so as to maintain order. Uses binary search.
+ _.sortedIndex = function(array, obj, iterator, context) {
+ iterator = lookupIterator(iterator);
+ var value = iterator.call(context, obj);
+ var low = 0, high = array.length;
+ while (low < high) {
+ var mid = (low + high) >>> 1;
+ iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
+ }
+ return low;
+ };
+
+ // Safely create a real, live array from anything iterable.
+ _.toArray = function(obj) {
+ if (!obj) return [];
+ if (_.isArray(obj)) return slice.call(obj);
+ if (obj.length === +obj.length) return _.map(obj, _.identity);
+ return _.values(obj);
+ };
+
+ // Return the number of elements in an object.
+ _.size = function(obj) {
+ if (obj == null) return 0;
+ return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
+ };
+
+ // Array Functions
+ // ---------------
+
+ // Get the first element of an array. Passing **n** will return the first N
+ // values in the array. Aliased as `head` and `take`. The **guard** check
+ // allows it to work with `_.map`.
+ _.first = _.head = _.take = function(array, n, guard) {
+ if (array == null) return void 0;
+ if ((n == null) || guard) return array[0];
+ if (n < 0) return [];
+ return slice.call(array, 0, n);
+ };
+
+ // Returns everything but the last entry of the array. Especially useful on
+ // the arguments object. Passing **n** will return all the values in
+ // the array, excluding the last N. The **guard** check allows it to work with
+ // `_.map`.
+ _.initial = function(array, n, guard) {
+ return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
+ };
+
+ // Get the last element of an array. Passing **n** will return the last N
+ // values in the array. The **guard** check allows it to work with `_.map`.
+ _.last = function(array, n, guard) {
+ if (array == null) return void 0;
+ if ((n == null) || guard) return array[array.length - 1];
+ return slice.call(array, Math.max(array.length - n, 0));
+ };
+
+ // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
+ // Especially useful on the arguments object. Passing an **n** will return
+ // the rest N values in the array. The **guard**
+ // check allows it to work with `_.map`.
+ _.rest = _.tail = _.drop = function(array, n, guard) {
+ return slice.call(array, (n == null) || guard ? 1 : n);
+ };
+
+ // Trim out all falsy values from an array.
+ _.compact = function(array) {
+ return _.filter(array, _.identity);
+ };
+
+ // Internal implementation of a recursive `flatten` function.
+ var flatten = function(input, shallow, output) {
+ if (shallow && _.every(input, _.isArray)) {
+ return concat.apply(output, input);
+ }
+ each(input, function(value) {
+ if (_.isArray(value) || _.isArguments(value)) {
+ shallow ? push.apply(output, value) : flatten(value, shallow, output);
+ } else {
+ output.push(value);
+ }
+ });
+ return output;
+ };
+
+ // Flatten out an array, either recursively (by default), or just one level.
+ _.flatten = function(array, shallow) {
+ return flatten(array, shallow, []);
+ };
+
+ // Return a version of the array that does not contain the specified value(s).
+ _.without = function(array) {
+ return _.difference(array, slice.call(arguments, 1));
+ };
+
+ // Split an array into two arrays: one whose elements all satisfy the given
+ // predicate, and one whose elements all do not satisfy the predicate.
+ _.partition = function(array, predicate) {
+ var pass = [], fail = [];
+ each(array, function(elem) {
+ (predicate(elem) ? pass : fail).push(elem);
+ });
+ return [pass, fail];
+ };
+
+ // Produce a duplicate-free version of the array. If the array has already
+ // been sorted, you have the option of using a faster algorithm.
+ // Aliased as `unique`.
+ _.uniq = _.unique = function(array, isSorted, iterator, context) {
+ if (_.isFunction(isSorted)) {
+ context = iterator;
+ iterator = isSorted;
+ isSorted = false;
+ }
+ var initial = iterator ? _.map(array, iterator, context) : array;
+ var results = [];
+ var seen = [];
+ each(initial, function(value, index) {
+ if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
+ seen.push(value);
+ results.push(array[index]);
+ }
+ });
+ return results;
+ };
+
+ // Produce an array that contains the union: each distinct element from all of
+ // the passed-in arrays.
+ _.union = function() {
+ return _.uniq(_.flatten(arguments, true));
+ };
+
+ // Produce an array that contains every item shared between all the
+ // passed-in arrays.
+ _.intersection = function(array) {
+ var rest = slice.call(arguments, 1);
+ return _.filter(_.uniq(array), function(item) {
+ return _.every(rest, function(other) {
+ return _.contains(other, item);
+ });
+ });
+ };
+
+ // Take the difference between one array and a number of other arrays.
+ // Only the elements present in just the first array will remain.
+ _.difference = function(array) {
+ var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
+ return _.filter(array, function(value){ return !_.contains(rest, value); });
+ };
+
+ // Zip together multiple lists into a single array -- elements that share
+ // an index go together.
+ _.zip = function() {
+ var length = _.max(_.pluck(arguments, 'length').concat(0));
+ var results = new Array(length);
+ for (var i = 0; i < length; i++) {
+ results[i] = _.pluck(arguments, '' + i);
+ }
+ return results;
+ };
+
+ // Converts lists into objects. Pass either a single array of `[key, value]`
+ // pairs, or two parallel arrays of the same length -- one of keys, and one of
+ // the corresponding values.
+ _.object = function(list, values) {
+ if (list == null) return {};
+ var result = {};
+ for (var i = 0, length = list.length; i < length; i++) {
+ if (values) {
+ result[list[i]] = values[i];
+ } else {
+ result[list[i][0]] = list[i][1];
+ }
+ }
+ return result;
+ };
+
+ // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
+ // we need this function. Return the position of the first occurrence of an
+ // item in an array, or -1 if the item is not included in the array.
+ // Delegates to **ECMAScript 5**'s native `indexOf` if available.
+ // If the array is large and already in sort order, pass `true`
+ // for **isSorted** to use binary search.
+ _.indexOf = function(array, item, isSorted) {
+ if (array == null) return -1;
+ var i = 0, length = array.length;
+ if (isSorted) {
+ if (typeof isSorted == 'number') {
+ i = (isSorted < 0 ? Math.max(0, length + isSorted) : isSorted);
+ } else {
+ i = _.sortedIndex(array, item);
+ return array[i] === item ? i : -1;
+ }
+ }
+ if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
+ for (; i < length; i++) if (array[i] === item) return i;
+ return -1;
+ };
+
+ // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
+ _.lastIndexOf = function(array, item, from) {
+ if (array == null) return -1;
+ var hasIndex = from != null;
+ if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
+ return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
+ }
+ var i = (hasIndex ? from : array.length);
+ while (i--) if (array[i] === item) return i;
+ return -1;
+ };
+
+ // Generate an integer Array containing an arithmetic progression. A port of
+ // the native Python `range()` function. See
+ // [the Python documentation](http://docs.python.org/library/functions.html#range).
+ _.range = function(start, stop, step) {
+ if (arguments.length <= 1) {
+ stop = start || 0;
+ start = 0;
+ }
+ step = arguments[2] || 1;
+
+ var length = Math.max(Math.ceil((stop - start) / step), 0);
+ var idx = 0;
+ var range = new Array(length);
+
+ while(idx < length) {
+ range[idx++] = start;
+ start += step;
+ }
+
+ return range;
+ };
+
+ // Function (ahem) Functions
+ // ------------------
+
+ // Reusable constructor function for prototype setting.
+ var ctor = function(){};
+
+ // Create a function bound to a given object (assigning `this`, and arguments,
+ // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
+ // available.
+ _.bind = function(func, context) {
+ var args, bound;
+ if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+ if (!_.isFunction(func)) throw new TypeError;
+ args = slice.call(arguments, 2);
+ return bound = function() {
+ if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
+ ctor.prototype = func.prototype;
+ var self = new ctor;
+ ctor.prototype = null;
+ var result = func.apply(self, args.concat(slice.call(arguments)));
+ if (Object(result) === result) return result;
+ return self;
+ };
+ };
+
+ // Partially apply a function by creating a version that has had some of its
+ // arguments pre-filled, without changing its dynamic `this` context. _ acts
+ // as a placeholder, allowing any combination of arguments to be pre-filled.
+ _.partial = function(func) {
+ var boundArgs = slice.call(arguments, 1);
+ return function() {
+ var position = 0;
+ var args = boundArgs.slice();
+ for (var i = 0, length = args.length; i < length; i++) {
+ if (args[i] === _) args[i] = arguments[position++];
+ }
+ while (position < arguments.length) args.push(arguments[position++]);
+ return func.apply(this, args);
+ };
+ };
+
+ // Bind a number of an object's methods to that object. Remaining arguments
+ // are the method names to be bound. Useful for ensuring that all callbacks
+ // defined on an object belong to it.
+ _.bindAll = function(obj) {
+ var funcs = slice.call(arguments, 1);
+ if (funcs.length === 0) throw new Error('bindAll must be passed function names');
+ each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+ return obj;
+ };
+
+ // Memoize an expensive function by storing its results.
+ _.memoize = function(func, hasher) {
+ var memo = {};
+ hasher || (hasher = _.identity);
+ return function() {
+ var key = hasher.apply(this, arguments);
+ return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+ };
+ };
+
+ // Delays a function for the given number of milliseconds, and then calls
+ // it with the arguments supplied.
+ _.delay = function(func, wait) {
+ var args = slice.call(arguments, 2);
+ return setTimeout(function(){ return func.apply(null, args); }, wait);
+ };
+
+ // Defers a function, scheduling it to run after the current call stack has
+ // cleared.
+ _.defer = function(func) {
+ return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
+ };
+
+ // Returns a function, that, when invoked, will only be triggered at most once
+ // during a given window of time. Normally, the throttled function will run
+ // as much as it can, without ever going more than once per `wait` duration;
+ // but if you'd like to disable the execution on the leading edge, pass
+ // `{leading: false}`. To disable execution on the trailing edge, ditto.
+ _.throttle = function(func, wait, options) {
+ var context, args, result;
+ var timeout = null;
+ var previous = 0;
+ options || (options = {});
+ var later = function() {
+ previous = options.leading === false ? 0 : _.now();
+ timeout = null;
+ result = func.apply(context, args);
+ context = args = null;
+ };
+ return function() {
+ var now = _.now();
+ if (!previous && options.leading === false) previous = now;
+ var remaining = wait - (now - previous);
+ context = this;
+ args = arguments;
+ if (remaining <= 0) {
+ clearTimeout(timeout);
+ timeout = null;
+ previous = now;
+ result = func.apply(context, args);
+ context = args = null;
+ } else if (!timeout && options.trailing !== false) {
+ timeout = setTimeout(later, remaining);
+ }
+ return result;
+ };
+ };
+
+ // Returns a function, that, as long as it continues to be invoked, will not
+ // be triggered. The function will be called after it stops being called for
+ // N milliseconds. If `immediate` is passed, trigger the function on the
+ // leading edge, instead of the trailing.
+ _.debounce = function(func, wait, immediate) {
+ var timeout, args, context, timestamp, result;
+
+ var later = function() {
+ var last = _.now() - timestamp;
+ if (last < wait) {
+ timeout = setTimeout(later, wait - last);
+ } else {
+ timeout = null;
+ if (!immediate) {
+ result = func.apply(context, args);
+ context = args = null;
+ }
+ }
+ };
+
+ return function() {
+ context = this;
+ args = arguments;
+ timestamp = _.now();
+ var callNow = immediate && !timeout;
+ if (!timeout) {
+ timeout = setTimeout(later, wait);
+ }
+ if (callNow) {
+ result = func.apply(context, args);
+ context = args = null;
+ }
+
+ return result;
+ };
+ };
+
+ // Returns a function that will be executed at most one time, no matter how
+ // often you call it. Useful for lazy initialization.
+ _.once = function(func) {
+ var ran = false, memo;
+ return function() {
+ if (ran) return memo;
+ ran = true;
+ memo = func.apply(this, arguments);
+ func = null;
+ return memo;
+ };
+ };
+
+ // Returns the first function passed as an argument to the second,
+ // allowing you to adjust arguments, run code before and after, and
+ // conditionally execute the original function.
+ _.wrap = function(func, wrapper) {
+ return _.partial(wrapper, func);
+ };
+
+ // Returns a function that is the composition of a list of functions, each
+ // consuming the return value of the function that follows.
+ _.compose = function() {
+ var funcs = arguments;
+ return function() {
+ var args = arguments;
+ for (var i = funcs.length - 1; i >= 0; i--) {
+ args = [funcs[i].apply(this, args)];
+ }
+ return args[0];
+ };
+ };
+
+ // Returns a function that will only be executed after being called N times.
+ _.after = function(times, func) {
+ return function() {
+ if (--times < 1) {
+ return func.apply(this, arguments);
+ }
+ };
+ };
+
+ // Object Functions
+ // ----------------
+
+ // Retrieve the names of an object's properties.
+ // Delegates to **ECMAScript 5**'s native `Object.keys`
+ _.keys = function(obj) {
+ if (!_.isObject(obj)) return [];
+ if (nativeKeys) return nativeKeys(obj);
+ var keys = [];
+ for (var key in obj) if (_.has(obj, key)) keys.push(key);
+ return keys;
+ };
+
+ // Retrieve the values of an object's properties.
+ _.values = function(obj) {
+ var keys = _.keys(obj);
+ var length = keys.length;
+ var values = new Array(length);
+ for (var i = 0; i < length; i++) {
+ values[i] = obj[keys[i]];
+ }
+ return values;
+ };
+
+ // Convert an object into a list of `[key, value]` pairs.
+ _.pairs = function(obj) {
+ var keys = _.keys(obj);
+ var length = keys.length;
+ var pairs = new Array(length);
+ for (var i = 0; i < length; i++) {
+ pairs[i] = [keys[i], obj[keys[i]]];
+ }
+ return pairs;
+ };
+
+ // Invert the keys and values of an object. The values must be serializable.
+ _.invert = function(obj) {
+ var result = {};
+ var keys = _.keys(obj);
+ for (var i = 0, length = keys.length; i < length; i++) {
+ result[obj[keys[i]]] = keys[i];
+ }
+ return result;
+ };
+
+ // Return a sorted list of the function names available on the object.
+ // Aliased as `methods`
+ _.functions = _.methods = function(obj) {
+ var names = [];
+ for (var key in obj) {
+ if (_.isFunction(obj[key])) names.push(key);
+ }
+ return names.sort();
+ };
+
+ // Extend a given object with all the properties in passed-in object(s).
+ _.extend = function(obj) {
+ each(slice.call(arguments, 1), function(source) {
+ if (source) {
+ for (var prop in source) {
+ obj[prop] = source[prop];
+ }
+ }
+ });
+ return obj;
+ };
+
+ // Return a copy of the object only containing the whitelisted properties.
+ _.pick = function(obj) {
+ var copy = {};
+ var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+ each(keys, function(key) {
+ if (key in obj) copy[key] = obj[key];
+ });
+ return copy;
+ };
+
+ // Return a copy of the object without the blacklisted properties.
+ _.omit = function(obj) {
+ var copy = {};
+ var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+ for (var key in obj) {
+ if (!_.contains(keys, key)) copy[key] = obj[key];
+ }
+ return copy;
+ };
+
+ // Fill in a given object with default properties.
+ _.defaults = function(obj) {
+ each(slice.call(arguments, 1), function(source) {
+ if (source) {
+ for (var prop in source) {
+ if (obj[prop] === void 0) obj[prop] = source[prop];
+ }
+ }
+ });
+ return obj;
+ };
+
+ // Create a (shallow-cloned) duplicate of an object.
+ _.clone = function(obj) {
+ if (!_.isObject(obj)) return obj;
+ return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+ };
+
+ // Invokes interceptor with the obj, and then returns obj.
+ // The primary purpose of this method is to "tap into" a method chain, in
+ // order to perform operations on intermediate results within the chain.
+ _.tap = function(obj, interceptor) {
+ interceptor(obj);
+ return obj;
+ };
+
+ // Internal recursive comparison function for `isEqual`.
+ var eq = function(a, b, aStack, bStack) {
+ // Identical objects are equal. `0 === -0`, but they aren't identical.
+ // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
+ if (a === b) return a !== 0 || 1 / a == 1 / b;
+ // A strict comparison is necessary because `null == undefined`.
+ if (a == null || b == null) return a === b;
+ // Unwrap any wrapped objects.
+ if (a instanceof _) a = a._wrapped;
+ if (b instanceof _) b = b._wrapped;
+ // Compare `[[Class]]` names.
+ var className = toString.call(a);
+ if (className != toString.call(b)) return false;
+ switch (className) {
+ // Strings, numbers, dates, and booleans are compared by value.
+ case '[object String]':
+ // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+ // equivalent to `new String("5")`.
+ return a == String(b);
+ case '[object Number]':
+ // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
+ // other numeric values.
+ return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
+ case '[object Date]':
+ case '[object Boolean]':
+ // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+ // millisecond representations. Note that invalid dates with millisecond representations
+ // of `NaN` are not equivalent.
+ return +a == +b;
+ // RegExps are compared by their source patterns and flags.
+ case '[object RegExp]':
+ return a.source == b.source &&
+ a.global == b.global &&
+ a.multiline == b.multiline &&
+ a.ignoreCase == b.ignoreCase;
+ }
+ if (typeof a != 'object' || typeof b != 'object') return false;
+ // Assume equality for cyclic structures. The algorithm for detecting cyclic
+ // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+ var length = aStack.length;
+ while (length--) {
+ // Linear search. Performance is inversely proportional to the number of
+ // unique nested structures.
+ if (aStack[length] == a) return bStack[length] == b;
+ }
+ // Objects with different constructors are not equivalent, but `Object`s
+ // from different frames are.
+ var aCtor = a.constructor, bCtor = b.constructor;
+ if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
+ _.isFunction(bCtor) && (bCtor instanceof bCtor))
+ && ('constructor' in a && 'constructor' in b)) {
+ return false;
+ }
+ // Add the first object to the stack of traversed objects.
+ aStack.push(a);
+ bStack.push(b);
+ var size = 0, result = true;
+ // Recursively compare objects and arrays.
+ if (className == '[object Array]') {
+ // Compare array lengths to determine if a deep comparison is necessary.
+ size = a.length;
+ result = size == b.length;
+ if (result) {
+ // Deep compare the contents, ignoring non-numeric properties.
+ while (size--) {
+ if (!(result = eq(a[size], b[size], aStack, bStack))) break;
+ }
+ }
+ } else {
+ // Deep compare objects.
+ for (var key in a) {
+ if (_.has(a, key)) {
+ // Count the expected number of properties.
+ size++;
+ // Deep compare each member.
+ if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
+ }
+ }
+ // Ensure that both objects contain the same number of properties.
+ if (result) {
+ for (key in b) {
+ if (_.has(b, key) && !(size--)) break;
+ }
+ result = !size;
+ }
+ }
+ // Remove the first object from the stack of traversed objects.
+ aStack.pop();
+ bStack.pop();
+ return result;
+ };
+
+ // Perform a deep comparison to check if two objects are equal.
+ _.isEqual = function(a, b) {
+ return eq(a, b, [], []);
+ };
+
+ // Is a given array, string, or object empty?
+ // An "empty" object has no enumerable own-properties.
+ _.isEmpty = function(obj) {
+ if (obj == null) return true;
+ if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+ for (var key in obj) if (_.has(obj, key)) return false;
+ return true;
+ };
+
+ // Is a given value a DOM element?
+ _.isElement = function(obj) {
+ return !!(obj && obj.nodeType === 1);
+ };
+
+ // Is a given value an array?
+ // Delegates to ECMA5's native Array.isArray
+ _.isArray = nativeIsArray || function(obj) {
+ return toString.call(obj) == '[object Array]';
+ };
+
+ // Is a given variable an object?
+ _.isObject = function(obj) {
+ return obj === Object(obj);
+ };
+
+ // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
+ each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
+ _['is' + name] = function(obj) {
+ return toString.call(obj) == '[object ' + name + ']';
+ };
+ });
+
+ // Define a fallback version of the method in browsers (ahem, IE), where
+ // there isn't any inspectable "Arguments" type.
+ if (!_.isArguments(arguments)) {
+ _.isArguments = function(obj) {
+ return !!(obj && _.has(obj, 'callee'));
+ };
+ }
+
+ // Optimize `isFunction` if appropriate.
+ if (typeof (/./) !== 'function') {
+ _.isFunction = function(obj) {
+ return typeof obj === 'function';
+ };
+ }
+
+ // Is a given object a finite number?
+ _.isFinite = function(obj) {
+ return isFinite(obj) && !isNaN(parseFloat(obj));
+ };
+
+ // Is the given value `NaN`? (NaN is the only number which does not equal itself).
+ _.isNaN = function(obj) {
+ return _.isNumber(obj) && obj != +obj;
+ };
+
+ // Is a given value a boolean?
+ _.isBoolean = function(obj) {
+ return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
+ };
+
+ // Is a given value equal to null?
+ _.isNull = function(obj) {
+ return obj === null;
+ };
+
+ // Is a given variable undefined?
+ _.isUndefined = function(obj) {
+ return obj === void 0;
+ };
+
+ // Shortcut function for checking if an object has a given property directly
+ // on itself (in other words, not on a prototype).
+ _.has = function(obj, key) {
+ return hasOwnProperty.call(obj, key);
+ };
+
+ // Utility Functions
+ // -----------------
+
+ // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+ // previous owner. Returns a reference to the Underscore object.
+ _.noConflict = function() {
+ root._ = previousUnderscore;
+ return this;
+ };
+
+ // Keep the identity function around for default iterators.
+ _.identity = function(value) {
+ return value;
+ };
+
+ _.constant = function(value) {
+ return function () {
+ return value;
+ };
+ };
+
+ _.property = function(key) {
+ return function(obj) {
+ return obj[key];
+ };
+ };
+
+ // Returns a predicate for checking whether an object has a given set of `key:value` pairs.
+ _.matches = function(attrs) {
+ return function(obj) {
+ if (obj === attrs) return true; //avoid comparing an object to itself.
+ for (var key in attrs) {
+ if (attrs[key] !== obj[key])
+ return false;
+ }
+ return true;
+ }
+ };
+
+ // Run a function **n** times.
+ _.times = function(n, iterator, context) {
+ var accum = Array(Math.max(0, n));
+ for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
+ return accum;
+ };
+
+ // Return a random integer between min and max (inclusive).
+ _.random = function(min, max) {
+ if (max == null) {
+ max = min;
+ min = 0;
+ }
+ return min + Math.floor(Math.random() * (max - min + 1));
+ };
+
+ // A (possibly faster) way to get the current timestamp as an integer.
+ _.now = Date.now || function() { return new Date().getTime(); };
+
+ // List of HTML entities for escaping.
+ var entityMap = {
+ escape: {
+ '&': '&',
+ '<': '<',
+ '>': '>',
+ '"': '"',
+ "'": '''
+ }
+ };
+ entityMap.unescape = _.invert(entityMap.escape);
+
+ // Regexes containing the keys and values listed immediately above.
+ var entityRegexes = {
+ escape: new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
+ unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
+ };
+
+ // Functions for escaping and unescaping strings to/from HTML interpolation.
+ _.each(['escape', 'unescape'], function(method) {
+ _[method] = function(string) {
+ if (string == null) return '';
+ return ('' + string).replace(entityRegexes[method], function(match) {
+ return entityMap[method][match];
+ });
+ };
+ });
+
+ // If the value of the named `property` is a function then invoke it with the
+ // `object` as context; otherwise, return it.
+ _.result = function(object, property) {
+ if (object == null) return void 0;
+ var value = object[property];
+ return _.isFunction(value) ? value.call(object) : value;
+ };
+
+ // Add your own custom functions to the Underscore object.
+ _.mixin = function(obj) {
+ each(_.functions(obj), function(name) {
+ var func = _[name] = obj[name];
+ _.prototype[name] = function() {
+ var args = [this._wrapped];
+ push.apply(args, arguments);
+ return result.call(this, func.apply(_, args));
+ };
+ });
+ };
+
+ // Generate a unique integer id (unique within the entire client session).
+ // Useful for temporary DOM ids.
+ var idCounter = 0;
+ _.uniqueId = function(prefix) {
+ var id = ++idCounter + '';
+ return prefix ? prefix + id : id;
+ };
+
+ // By default, Underscore uses ERB-style template delimiters, change the
+ // following template settings to use alternative delimiters.
+ _.templateSettings = {
+ evaluate : /<%([\s\S]+?)%>/g,
+ interpolate : /<%=([\s\S]+?)%>/g,
+ escape : /<%-([\s\S]+?)%>/g
+ };
+
+ // When customizing `templateSettings`, if you don't want to define an
+ // interpolation, evaluation or escaping regex, we need one that is
+ // guaranteed not to match.
+ var noMatch = /(.)^/;
+
+ // Certain characters need to be escaped so that they can be put into a
+ // string literal.
+ var escapes = {
+ "'": "'",
+ '\\': '\\',
+ '\r': 'r',
+ '\n': 'n',
+ '\t': 't',
+ '\u2028': 'u2028',
+ '\u2029': 'u2029'
+ };
+
+ var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
+
+ // JavaScript micro-templating, similar to John Resig's implementation.
+ // Underscore templating handles arbitrary delimiters, preserves whitespace,
+ // and correctly escapes quotes within interpolated code.
+ _.template = function(text, data, settings) {
+ var render;
+ settings = _.defaults({}, settings, _.templateSettings);
+
+ // Combine delimiters into one regular expression via alternation.
+ var matcher = new RegExp([
+ (settings.escape || noMatch).source,
+ (settings.interpolate || noMatch).source,
+ (settings.evaluate || noMatch).source
+ ].join('|') + '|$', 'g');
+
+ // Compile the template source, escaping string literals appropriately.
+ var index = 0;
+ var source = "__p+='";
+ text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
+ source += text.slice(index, offset)
+ .replace(escaper, function(match) { return '\\' + escapes[match]; });
+
+ if (escape) {
+ source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
+ }
+ if (interpolate) {
+ source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
+ }
+ if (evaluate) {
+ source += "';\n" + evaluate + "\n__p+='";
+ }
+ index = offset + match.length;
+ return match;
+ });
+ source += "';\n";
+
+ // If a variable is not specified, place data values in local scope.
+ if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
+
+ source = "var __t,__p='',__j=Array.prototype.join," +
+ "print=function(){__p+=__j.call(arguments,'');};\n" +
+ source + "return __p;\n";
+
+ try {
+ render = new Function(settings.variable || 'obj', '_', source);
+ } catch (e) {
+ e.source = source;
+ throw e;
+ }
+
+ if (data) return render(data, _);
+ var template = function(data) {
+ return render.call(this, data, _);
+ };
+
+ // Provide the compiled function source as a convenience for precompilation.
+ template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';
+
+ return template;
+ };
+
+ // Add a "chain" function, which will delegate to the wrapper.
+ _.chain = function(obj) {
+ return _(obj).chain();
+ };
+
+ // OOP
+ // ---------------
+ // If Underscore is called as a function, it returns a wrapped object that
+ // can be used OO-style. This wrapper holds altered versions of all the
+ // underscore functions. Wrapped objects may be chained.
+
+ // Helper function to continue chaining intermediate results.
+ var result = function(obj) {
+ return this._chain ? _(obj).chain() : obj;
+ };
+
+ // Add all of the Underscore functions to the wrapper object.
+ _.mixin(_);
+
+ // Add all mutator Array functions to the wrapper.
+ each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+ var method = ArrayProto[name];
+ _.prototype[name] = function() {
+ var obj = this._wrapped;
+ method.apply(obj, arguments);
+ if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
+ return result.call(this, obj);
+ };
+ });
+
+ // Add all accessor Array functions to the wrapper.
+ each(['concat', 'join', 'slice'], function(name) {
+ var method = ArrayProto[name];
+ _.prototype[name] = function() {
+ return result.call(this, method.apply(this._wrapped, arguments));
+ };
+ });
+
+ _.extend(_.prototype, {
+
+ // Start chaining a wrapped Underscore object.
+ chain: function() {
+ this._chain = true;
+ return this;
+ },
+
+ // Extracts the result from a wrapped and chained object.
+ value: function() {
+ return this._wrapped;
+ }
+
+ });
+
+ // AMD registration happens at the end for compatibility with AMD loaders
+ // that may not enforce next-turn semantics on modules. Even though general
+ // practice for AMD registration is to be anonymous, underscore registers
+ // as a named module because, like jQuery, it is a base library that is
+ // popular enough to be bundled in a third party lib, but not be part of
+ // an AMD load request. Those cases could generate an error when an
+ // anonymous define() is called outside of a loader request.
+ if (typeof define === 'function' && define.amd) {
+ define('underscore', [], function() {
+ return _;
+ });
+ }
+}).call(this);
</ins></span></pre></div>
<a id="trunksrcwpincludesjsunderscoreminjs"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/js/underscore.min.js (27169 => 27170)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/underscore.min.js 2014-02-13 05:09:04 UTC (rev 27169)
+++ trunk/src/wp-includes/js/underscore.min.js 2014-02-13 07:33:29 UTC (rev 27170)
</span><span class="lines">@@ -1,5 +1,6 @@
</span><del>-// Underscore.js 1.4.4
</del><ins>+// Underscore.js 1.6.0
</ins><span class="cx"> // http://underscorejs.org
</span><del>-// (c) 2009-2013 Jeremy Ashkenas, DocumentCloud Inc.
</del><ins>+// (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
</ins><span class="cx"> // Underscore may be freely distributed under the MIT license.
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+//# sourceMappingURL=underscore-min.map
</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="trunksrcwpincludesscriptloaderphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/script-loader.php (27169 => 27170)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/script-loader.php 2014-02-13 05:09:04 UTC (rev 27169)
+++ trunk/src/wp-includes/script-loader.php 2014-02-13 07:33:29 UTC (rev 27170)
</span><span class="lines">@@ -50,9 +50,12 @@
</span><span class="cx"> function wp_default_scripts( &$scripts ) {
</span><span class="cx"> include ABSPATH . WPINC . '/version.php'; // include an unmodified $wp_version
</span><span class="cx">
</span><del>- if ( ! defined( 'SCRIPT_DEBUG' ) )
- define( 'SCRIPT_DEBUG', false !== strpos( $wp_version, '-src' ) );
</del><ins>+ $develop_src = false !== strpos( $wp_version, '-src' );
</ins><span class="cx">
</span><ins>+ if ( ! defined( 'SCRIPT_DEBUG' ) ) {
+ define( 'SCRIPT_DEBUG', $develop_src );
+ }
+
</ins><span class="cx"> if ( ! $guessurl = site_url() ) {
</span><span class="cx"> $guessed_url = true;
</span><span class="cx"> $guessurl = wp_guess_url();
</span><span class="lines">@@ -64,6 +67,7 @@
</span><span class="cx"> $scripts->default_dirs = array('/wp-admin/js/', '/wp-includes/js/');
</span><span class="cx">
</span><span class="cx"> $suffix = SCRIPT_DEBUG ? '' : '.min';
</span><ins>+ $dev_suffix = $develop_src ? '' : '.min';
</ins><span class="cx">
</span><span class="cx"> $scripts->add( 'utils', "/wp-includes/js/utils$suffix.js" );
</span><span class="cx"> did_action( 'init' ) && $scripts->localize( 'utils', 'userSettings', array(
</span><span class="lines">@@ -270,8 +274,8 @@
</span><span class="cx">
</span><span class="cx"> $scripts->add( 'json2', "/wp-includes/js/json2$suffix.js", array(), '2011-02-23');
</span><span class="cx">
</span><del>- $scripts->add( 'underscore', '/wp-includes/js/underscore.min.js', array(), '1.4.4', 1 );
- $scripts->add( 'backbone', '/wp-includes/js/backbone.min.js', array('underscore','jquery'), '1.0.0', 1 );
</del><ins>+ $scripts->add( 'underscore', "/wp-includes/js/underscore$dev_suffix.js", array(), '1.6.0', 1 );
+ $scripts->add( 'backbone', "/wp-includes/js/backbone$dev_suffix.js", array( 'underscore','jquery' ), '1.1.0', 1 );
</ins><span class="cx">
</span><span class="cx"> $scripts->add( 'wp-util', "/wp-includes/js/wp-util$suffix.js", array('underscore', 'jquery'), false, 1 );
</span><span class="cx"> did_action( 'init' ) && $scripts->localize( 'wp-util', '_wpUtilSettings', array(
</span></span></pre>
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