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Switches the whole app to backbone. Oolaa

Signed-off-by: Akash Manohar J <akash@akash.im>
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commit 6d0f370145d7b784181f6bb4a2c14d7052c36ac1 1 parent f87789a
@HashNuke HashNuke authored
Showing with 2,420 additions and 364 deletions.
  1. +2 −0  Gemfile
  2. +7 −0 Gemfile.lock
  3. +3 −3 app/assets/javascripts/application.js
  4. +7 −0 app/assets/javascripts/backbone/collections/activities.js.coffee
  5. +3 −0  app/assets/javascripts/backbone/collections/channels.js.coffee
  6. +21 −0 app/assets/javascripts/backbone/kandan.js.coffee
  7. +6 −0 app/assets/javascripts/backbone/models/activity.js.coffee
  8. +11 −0 app/assets/javascripts/backbone/models/channel.js.coffee
  9. +5 −0 app/assets/javascripts/backbone/models/user.js.coffee
  10. +9 −0 app/assets/javascripts/backbone/routers/main_router.js.coffee
  11. +9 −0 app/assets/javascripts/backbone/views/activity.js.coffee
  12. +18 −0 app/assets/javascripts/backbone/views/chatarea.js.coffee
  13. +10 −0 app/assets/javascripts/backbone/views/list_activities.js.coffee
  14. +8 −0 app/assets/javascripts/backbone/views/list_channel_activity_areas.js.coffee
  15. 0  app/assets/javascripts/ember/controllers/.gitkeep
  16. +0 −6 app/assets/javascripts/ember/controllers/activities_controller.js.coffee
  17. +0 −2  app/assets/javascripts/ember/controllers/channels_controller.js.coffee
  18. +0 −2  app/assets/javascripts/ember/controllers/users_controller.js.coffee
  19. 0  app/assets/javascripts/ember/helpers/.gitkeep
  20. +0 −8 app/assets/javascripts/ember/kandan.js.coffee
  21. 0  app/assets/javascripts/ember/models/.gitkeep
  22. +0 −2  app/assets/javascripts/ember/models/activity.js.coffee
  23. +0 −3  app/assets/javascripts/ember/models/channel.js.coffee
  24. +0 −7 app/assets/javascripts/ember/models/user.js.coffee
  25. 0  app/assets/javascripts/ember/templates/.gitkeep
  26. +0 −4 app/assets/javascripts/ember/templates/activities/list_activities.handlebars
  27. +0 −4 app/assets/javascripts/ember/templates/activities/list_channel_activities.handlebars
  28. +0 −1  app/assets/javascripts/ember/templates/activities/show.handlebars
  29. +0 −5 app/assets/javascripts/ember/templates/channels/list.handlebars
  30. +0 −1  app/assets/javascripts/ember/templates/channels/show.handlebars
  31. +0 −5 app/assets/javascripts/ember/views/activities/list_activities.js.coffee
  32. +0 −2  app/assets/javascripts/ember/views/activities/list_channel_activities.js.coffee
  33. +0 −5 app/assets/javascripts/ember/views/activities/show.js.coffee
  34. +0 −6 app/assets/javascripts/ember/views/channels/list.js.coffee
  35. +0 −5 app/assets/javascripts/ember/views/channels/show.js.coffee
  36. +0 −2  app/assets/javascripts/init.js.coffee
  37. +1,290 −0 app/assets/javascripts/lib/backbone.js
  38. +0 −280 app/assets/javascripts/lib/ember-rest.js
  39. +999 −0 app/assets/javascripts/lib/underscore.js
  40. +1 −0  app/assets/templates/activity.jst.eco
  41. +8 −0 app/assets/templates/chatarea.jst.eco
  42. 0  app/assets/{javascripts/ember/views/.gitkeep → templates/list_channel_activity_areas.jst.eco}
  43. +2 −1  app/views/layouts/application.html.erb
  44. +0 −10 app/views/main/index.html.erb
  45. +1 −0  config/initializers/backbone.rb
View
2  Gemfile
@@ -19,6 +19,8 @@ group :assets do
gem 'coffee-rails', '~> 3.2.1'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
+ gem 'execjs'
+ gem 'eco'
gem 'therubyracer'
gem 'uglifier', '>= 1.0.3'
View
7 Gemfile.lock
@@ -82,6 +82,11 @@ GEM
devise (= 1.5.3)
rubycas-client (>= 2.2.1)
diff-lcs (1.1.3)
+ eco (1.0.0)
+ coffee-script
+ eco-source
+ execjs
+ eco-source (1.1.0.rc.1)
em-http-request (1.0.1)
addressable (>= 2.2.3)
cookiejar
@@ -218,7 +223,9 @@ DEPENDENCIES
coffee-rails (~> 3.2.1)
devise
devise_bushido_authenticatable
+ eco
ember-rails!
+ execjs
factory_girl_rails
faye
jasmine!
View
6 app/assets/javascripts/application.js
@@ -13,7 +13,7 @@
//= require jquery
//= require jquery-ui
//= require jquery_ujs
-//= require ember-dev
-//= require lib/ember-rest.js
-//= require ember/kandan
+//= require lib/underscore
+//= require lib/backbone
+//= require backbone/kandan
//= require_tree .
View
7 app/assets/javascripts/backbone/collections/activities.js.coffee
@@ -0,0 +1,7 @@
+class Kandan.Collections.Activities extends Backbone.Collection
+
+ urlRoot: ()->
+ "channels/#{@channel_id}/activities"
+
+ initialize: (options)->
+ @channel_id = @get('channel_id')
View
3  app/assets/javascripts/backbone/collections/channels.js.coffee
@@ -0,0 +1,3 @@
+class Kandan.Collections.Channels extends Backbone.Collection
+ model: Kandan.Models.Channel
+ url: '/channels'
View
21 app/assets/javascripts/backbone/kandan.js.coffee
@@ -0,0 +1,21 @@
+#= require_self
+#= require_tree ../../templates
+#= require_tree ./models
+#= require_tree ./collections
+#= require_tree ./views
+#= require_tree ./routers
+
+window.Kandan =
+ Models: {}
+ Collections: {}
+ Views: {}
+ Routers: {}
+ init: ->
+ # new Kandan.Routers.Main()
+ # Backbone.history.start({pushState: true})
+ chat_area = new Kandan.Views.ChatArea()
+ $('.container').html(chat_area.render().el)
+ # $('.container').append(chat_box)
+
+$(document).ready ->
+ Kandan.init()
View
6 app/assets/javascripts/backbone/models/activity.js.coffee
@@ -0,0 +1,6 @@
+class Kandan.Models.Activity extends Backbone.Model
+ urlRoot: ()->
+ "channels/#{@channel_id}/activities"
+
+ initialize: (options)->
+ @channel_id = @get('channel_id')
View
11 app/assets/javascripts/backbone/models/channel.js.coffee
@@ -0,0 +1,11 @@
+class Kandan.Models.Channel extends Backbone.Model
+ urlRoot: '/channels'
+
+ # initialize: ()->
+ # console.log @activities
+
+ parse: (response)->
+ activities = new Kandan.Collections.Activities()
+ activities.add(response.activities)
+ @activities = activities
+ response
View
5 app/assets/javascripts/backbone/models/user.js.coffee
@@ -0,0 +1,5 @@
+class Kandan.Models.User extends Backbone.Model
+ urlRoot: '/users'
+
+ initialize: ()->
+ console.log "initialized user"
View
9 app/assets/javascripts/backbone/routers/main_router.js.coffee
@@ -0,0 +1,9 @@
+class Kandan.Routers.Main extends Backbone.Router
+
+ routes:
+ '': 'index'
+
+ index: ()->
+ view = new Kandan.Views.ChatArea()
+ $('.container').html(view.render().el)
+ $('.channels').tabs()
View
9 app/assets/javascripts/backbone/views/activity.js.coffee
@@ -0,0 +1,9 @@
+class Kandan.Views.Activity extends Backbone.View
+ template: JST['activity']
+
+ tagName: 'p'
+ className: 'activity'
+
+ render: ()->
+ $(@el).html(@template({activity: @options.activity}))
+ @
View
18 app/assets/javascripts/backbone/views/chatarea.js.coffee
@@ -0,0 +1,18 @@
+class Kandan.Views.ChatArea extends Backbone.View
+
+ template: JST['chatarea']
+ # className: 'channels'
+
+ initialize: ()->
+ @channels = new Kandan.Collections.Channels()
+
+ render: ->
+ @channels.fetch({success: ()=>
+ $(@el).html(@template({channels: @channels}))
+ for channel in @channels.models
+ view = new Kandan.Views.ListActivities({channel: channel})
+ $(@el).append(view.render().el)
+ $('#channels').tabs()
+ })
+ $(@el).attr('id', 'channels')
+ @
View
10 app/assets/javascripts/backbone/views/list_activities.js.coffee
@@ -0,0 +1,10 @@
+class Kandan.Views.ListActivities extends Backbone.View
+ tagName: 'div'
+ # className: 'activities'
+
+ render: ()->
+ for activity in @options.channel.activities.models
+ activity_view = new Kandan.Views.Activity({activity: activity})
+ $(@el).append(activity_view.render().el)
+ $(@el).attr('id', "channels-#{@options.channel.get('id')}")
+ @
View
8 app/assets/javascripts/backbone/views/list_channel_activity_areas.js.coffee
@@ -0,0 +1,8 @@
+class Kandan.Views.ListChannelActivityAreas extends Backbone.View
+ # template: JST['list_channel_activity_areas']
+
+ render: ()->
+ for channel in @options.channels.models
+ view = new Kandan.Views.ListActivities({activities: channel.activities})
+ $(@el).append(view.render().el)
+ @
View
0  app/assets/javascripts/ember/controllers/.gitkeep
No changes.
View
6 app/assets/javascripts/ember/controllers/activities_controller.js.coffee
@@ -1,6 +0,0 @@
-Kandan.ActivitiesController = Ember.ResourceController.create({
- resourceType: Kandan.Activity
-
- _resourceUrl: ()->
- "/channels/#{@get('channel').get('id')}/activities"
-})
View
2  app/assets/javascripts/ember/controllers/channels_controller.js.coffee
@@ -1,2 +0,0 @@
-Kandan.ChannelsController = Ember.ResourceController.create
- resourceType: Kandan.Channel
View
2  app/assets/javascripts/ember/controllers/users_controller.js.coffee
@@ -1,2 +0,0 @@
-Kandan.UsersController = Ember.ResourceController.create
- resourceType: Kandan.User
View
0  app/assets/javascripts/ember/helpers/.gitkeep
No changes.
View
8 app/assets/javascripts/ember/kandan.js.coffee
@@ -1,8 +0,0 @@
-#= require_self
-#= require_tree ./models
-#= require_tree ./controllers
-#= require_tree ./views
-#= require_tree ./helpers
-#= require_tree ./templates
-
-window.Kandan = Ember.Application.create()
View
0  app/assets/javascripts/ember/models/.gitkeep
No changes.
View
2  app/assets/javascripts/ember/models/activity.js.coffee
@@ -1,2 +0,0 @@
-Kandan.Activity = Ember.Resource.extend
- resourceName: 'activity'
View
3  app/assets/javascripts/ember/models/channel.js.coffee
@@ -1,3 +0,0 @@
-Kandan.Channel = Ember.Resource.extend
- resourceUrl: '/channels'
- resourceName: 'channel'
View
7 app/assets/javascripts/ember/models/user.js.coffee
@@ -1,7 +0,0 @@
-class Kandan.User extends Ember.Resource
- resourceUrl: '/users'
-
- full_name: Ember.computed(
- ()->
- "#{@get('first_name')} #{@get('last_name')}"
- )
View
0  app/assets/javascripts/ember/templates/.gitkeep
No changes.
View
4 app/assets/javascripts/ember/templates/activities/list_activities.handlebars
@@ -1,4 +0,0 @@
-List activitiy boxes for channels below:
-{{#each channels}}
- {{view Kandan.ListChannelActivitiesView channelBinding="this"}}
-{{/each}}
View
4 app/assets/javascripts/ember/templates/activities/list_channel_activities.handlebars
@@ -1,4 +0,0 @@
-CHANNEL: {{channel.name}}
-{{#each channel.activities}}
- {{view Kandan.ShowActivityView activityBinding="this"}}
-{{/each}}
View
1  app/assets/javascripts/ember/templates/activities/show.handlebars
@@ -1 +0,0 @@
-{{activity.user.first_name}}: {{activity.content}}
View
5 app/assets/javascripts/ember/templates/channels/list.handlebars
@@ -1,5 +0,0 @@
-<div class='channel-list'>
- {{#each channels}}
- {{view Kandan.ShowChannelView channelBinding="this"}}
- {{/each}}
-</div>
View
1  app/assets/javascripts/ember/templates/channels/show.handlebars
@@ -1 +0,0 @@
-{{channel.id}}-{{channel.name}}
View
5 app/assets/javascripts/ember/views/activities/list_activities.js.coffee
@@ -1,5 +0,0 @@
-Kandan.ListActivitiesView = Ember.View.extend({
- templateName: 'ember/templates/activities/list_activities'
- channelsBinding: 'Kandan.ChannelsController'
- activitiesBinding: 'Kandan.ActivitiesController'
-})
View
2  app/assets/javascripts/ember/views/activities/list_channel_activities.js.coffee
@@ -1,2 +0,0 @@
-Kandan.ListChannelActivitiesView = Ember.View.extend
- templateName: 'ember/templates/activities/list_channel_activities'
View
5 app/assets/javascripts/ember/views/activities/show.js.coffee
@@ -1,5 +0,0 @@
-Kandan.ShowActivityView = Ember.View.extend({
- templateName: 'ember/templates/activities/show'
- className: ['activity']
- tagName: 'div'
-})
View
6 app/assets/javascripts/ember/views/channels/list.js.coffee
@@ -1,6 +0,0 @@
-Kandan.ListChannelsView = Ember.View.extend
- templateName: 'ember/templates/channels/list'
- channelsBinding: 'Kandan.ChannelsController'
-
- refreshList: ()->
- Kandan.ChannelsController.findAll()
View
5 app/assets/javascripts/ember/views/channels/show.js.coffee
@@ -1,5 +0,0 @@
-Kandan.ShowChannelView = Ember.View.extend({
- templateName: 'ember/templates/channels/show'
- className: ['channel-name']
- tagName: 'div'
-})
View
2  app/assets/javascripts/init.js.coffee
@@ -1,2 +0,0 @@
-$ ->
- $(".channels").tabs()
View
1,290 app/assets/javascripts/lib/backbone.js
@@ -0,0 +1,1290 @@
+// Backbone.js 0.9.1
+
+// (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc.
+// Backbone may be freely distributed under the MIT license.
+// For all details and documentation:
+// http://backbonejs.org
+
+(function(){
+
+ // Initial Setup
+ // -------------
+
+ // Save a reference to the global object (`window` in the browser, `global`
+ // on the server).
+ var root = this;
+
+ // Save the previous value of the `Backbone` variable, so that it can be
+ // restored later on, if `noConflict` is used.
+ var previousBackbone = root.Backbone;
+
+ // Create a local reference to slice/splice.
+ var slice = Array.prototype.slice;
+ var splice = Array.prototype.splice;
+
+ // The top-level namespace. All public Backbone classes and modules will
+ // be attached to this. Exported for both CommonJS and the browser.
+ var Backbone;
+ if (typeof exports !== 'undefined') {
+ Backbone = exports;
+ } else {
+ Backbone = root.Backbone = {};
+ }
+
+ // Current version of the library. Keep in sync with `package.json`.
+ Backbone.VERSION = '0.9.1';
+
+ // Require Underscore, if we're on the server, and it's not already present.
+ var _ = root._;
+ if (!_ && (typeof require !== 'undefined')) _ = require('underscore');
+
+ // For Backbone's purposes, jQuery, Zepto, or Ender owns the `$` variable.
+ var $ = root.jQuery || root.Zepto || root.ender;
+
+ // Set the JavaScript library that will be used for DOM manipulation and
+ // Ajax calls (a.k.a. the `$` variable). By default Backbone will use: jQuery,
+ // Zepto, or Ender; but the `setDomLibrary()` method lets you inject an
+ // alternate JavaScript library (or a mock library for testing your views
+ // outside of a browser).
+ Backbone.setDomLibrary = function(lib) {
+ $ = lib;
+ };
+
+ // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
+ // to its previous owner. Returns a reference to this Backbone object.
+ Backbone.noConflict = function() {
+ root.Backbone = previousBackbone;
+ return this;
+ };
+
+ // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
+ // will fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and
+ // set a `X-Http-Method-Override` header.
+ Backbone.emulateHTTP = false;
+
+ // Turn on `emulateJSON` to support legacy servers that can't deal with direct
+ // `application/json` requests ... will encode the body as
+ // `application/x-www-form-urlencoded` instead and will send the model in a
+ // form param named `model`.
+ Backbone.emulateJSON = false;
+
+ // Backbone.Events
+ // -----------------
+
+ // A module that can be mixed in to *any object* in order to provide it with
+ // custom events. You may bind with `on` or remove with `off` callback functions
+ // to an event; trigger`-ing an event fires all callbacks in succession.
+ //
+ // var object = {};
+ // _.extend(object, Backbone.Events);
+ // object.on('expand', function(){ alert('expanded'); });
+ // object.trigger('expand');
+ //
+ Backbone.Events = {
+
+ // Bind an event, specified by a string name, `ev`, to a `callback`
+ // function. Passing `"all"` will bind the callback to all events fired.
+ on: function(events, callback, context) {
+ var ev;
+ events = events.split(/\s+/);
+ var calls = this._callbacks || (this._callbacks = {});
+ while (ev = events.shift()) {
+ // Create an immutable callback list, allowing traversal during
+ // modification. The tail is an empty object that will always be used
+ // as the next node.
+ var list = calls[ev] || (calls[ev] = {});
+ var tail = list.tail || (list.tail = list.next = {});
+ tail.callback = callback;
+ tail.context = context;
+ list.tail = tail.next = {};
+ }
+ return this;
+ },
+
+ // Remove one or many callbacks. If `context` is null, removes all callbacks
+ // with that function. If `callback` is null, removes all callbacks for the
+ // event. If `ev` is null, removes all bound callbacks for all events.
+ off: function(events, callback, context) {
+ var ev, calls, node;
+ if (!events) {
+ delete this._callbacks;
+ } else if (calls = this._callbacks) {
+ events = events.split(/\s+/);
+ while (ev = events.shift()) {
+ node = calls[ev];
+ delete calls[ev];
+ if (!callback || !node) continue;
+ // Create a new list, omitting the indicated event/context pairs.
+ while ((node = node.next) && node.next) {
+ if (node.callback === callback &&
+ (!context || node.context === context)) continue;
+ this.on(ev, node.callback, node.context);
+ }
+ }
+ }
+ return this;
+ },
+
+ // Trigger an event, firing all bound callbacks. Callbacks are passed the
+ // same arguments as `trigger` is, apart from the event name.
+ // Listening for `"all"` passes the true event name as the first argument.
+ trigger: function(events) {
+ var event, node, calls, tail, args, all, rest;
+ if (!(calls = this._callbacks)) return this;
+ all = calls['all'];
+ (events = events.split(/\s+/)).push(null);
+ // Save references to the current heads & tails.
+ while (event = events.shift()) {
+ if (all) events.push({next: all.next, tail: all.tail, event: event});
+ if (!(node = calls[event])) continue;
+ events.push({next: node.next, tail: node.tail});
+ }
+ // Traverse each list, stopping when the saved tail is reached.
+ rest = slice.call(arguments, 1);
+ while (node = events.pop()) {
+ tail = node.tail;
+ args = node.event ? [node.event].concat(rest) : rest;
+ while ((node = node.next) !== tail) {
+ node.callback.apply(node.context || this, args);
+ }
+ }
+ return this;
+ }
+
+ };
+
+ // Aliases for backwards compatibility.
+ Backbone.Events.bind = Backbone.Events.on;
+ Backbone.Events.unbind = Backbone.Events.off;
+
+ // Backbone.Model
+ // --------------
+
+ // Create a new model, with defined attributes. A client id (`cid`)
+ // is automatically generated and assigned for you.
+ Backbone.Model = function(attributes, options) {
+ var defaults;
+ attributes || (attributes = {});
+ if (options && options.parse) attributes = this.parse(attributes);
+ if (defaults = getValue(this, 'defaults')) {
+ attributes = _.extend({}, defaults, attributes);
+ }
+ if (options && options.collection) this.collection = options.collection;
+ this.attributes = {};
+ this._escapedAttributes = {};
+ this.cid = _.uniqueId('c');
+ if (!this.set(attributes, {silent: true})) {
+ throw new Error("Can't create an invalid model");
+ }
+ delete this._changed;
+ this._previousAttributes = _.clone(this.attributes);
+ this.initialize.apply(this, arguments);
+ };
+
+ // Attach all inheritable methods to the Model prototype.
+ _.extend(Backbone.Model.prototype, Backbone.Events, {
+
+ // The default name for the JSON `id` attribute is `"id"`. MongoDB and
+ // CouchDB users may want to set this to `"_id"`.
+ idAttribute: 'id',
+
+ // Initialize is an empty function by default. Override it with your own
+ // initialization logic.
+ initialize: function(){},
+
+ // Return a copy of the model's `attributes` object.
+ toJSON: function() {
+ return _.clone(this.attributes);
+ },
+
+ // Get the value of an attribute.
+ get: function(attr) {
+ return this.attributes[attr];
+ },
+
+ // Get the HTML-escaped value of an attribute.
+ escape: function(attr) {
+ var html;
+ if (html = this._escapedAttributes[attr]) return html;
+ var val = this.attributes[attr];
+ return this._escapedAttributes[attr] = _.escape(val == null ? '' : '' + val);
+ },
+
+ // Returns `true` if the attribute contains a value that is not null
+ // or undefined.
+ has: function(attr) {
+ return this.attributes[attr] != null;
+ },
+
+ // Set a hash of model attributes on the object, firing `"change"` unless
+ // you choose to silence it.
+ set: function(key, value, options) {
+ var attrs, attr, val;
+ if (_.isObject(key) || key == null) {
+ attrs = key;
+ options = value;
+ } else {
+ attrs = {};
+ attrs[key] = value;
+ }
+
+ // Extract attributes and options.
+ options || (options = {});
+ if (!attrs) return this;
+ if (attrs instanceof Backbone.Model) attrs = attrs.attributes;
+ if (options.unset) for (attr in attrs) attrs[attr] = void 0;
+
+ // Run validation.
+ if (!this._validate(attrs, options)) return false;
+
+ // Check for changes of `id`.
+ if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
+
+ var now = this.attributes;
+ var escaped = this._escapedAttributes;
+ var prev = this._previousAttributes || {};
+ var alreadySetting = this._setting;
+ this._changed || (this._changed = {});
+ this._setting = true;
+
+ // Update attributes.
+ for (attr in attrs) {
+ val = attrs[attr];
+ if (!_.isEqual(now[attr], val)) delete escaped[attr];
+ options.unset ? delete now[attr] : now[attr] = val;
+ if (this._changing && !_.isEqual(this._changed[attr], val)) {
+ this.trigger('change:' + attr, this, val, options);
+ this._moreChanges = true;
+ }
+ delete this._changed[attr];
+ if (!_.isEqual(prev[attr], val) || (_.has(now, attr) != _.has(prev, attr))) {
+ this._changed[attr] = val;
+ }
+ }
+
+ // Fire the `"change"` events, if the model has been changed.
+ if (!alreadySetting) {
+ if (!options.silent && this.hasChanged()) this.change(options);
+ this._setting = false;
+ }
+ return this;
+ },
+
+ // Remove an attribute from the model, firing `"change"` unless you choose
+ // to silence it. `unset` is a noop if the attribute doesn't exist.
+ unset: function(attr, options) {
+ (options || (options = {})).unset = true;
+ return this.set(attr, null, options);
+ },
+
+ // Clear all attributes on the model, firing `"change"` unless you choose
+ // to silence it.
+ clear: function(options) {
+ (options || (options = {})).unset = true;
+ return this.set(_.clone(this.attributes), options);
+ },
+
+ // Fetch the model from the server. If the server's representation of the
+ // model differs from its current attributes, they will be overriden,
+ // triggering a `"change"` event.
+ fetch: function(options) {
+ options = options ? _.clone(options) : {};
+ var model = this;
+ var success = options.success;
+ options.success = function(resp, status, xhr) {
+ if (!model.set(model.parse(resp, xhr), options)) return false;
+ if (success) success(model, resp);
+ };
+ options.error = Backbone.wrapError(options.error, model, options);
+ return (this.sync || Backbone.sync).call(this, 'read', this, options);
+ },
+
+ // Set a hash of model attributes, and sync the model to the server.
+ // If the server returns an attributes hash that differs, the model's
+ // state will be `set` again.
+ save: function(key, value, options) {
+ var attrs, current;
+ if (_.isObject(key) || key == null) {
+ attrs = key;
+ options = value;
+ } else {
+ attrs = {};
+ attrs[key] = value;
+ }
+
+ options = options ? _.clone(options) : {};
+ if (options.wait) current = _.clone(this.attributes);
+ var silentOptions = _.extend({}, options, {silent: true});
+ if (attrs && !this.set(attrs, options.wait ? silentOptions : options)) {
+ return false;
+ }
+ var model = this;
+ var success = options.success;
+ options.success = function(resp, status, xhr) {
+ var serverAttrs = model.parse(resp, xhr);
+ if (options.wait) serverAttrs = _.extend(attrs || {}, serverAttrs);
+ if (!model.set(serverAttrs, options)) return false;
+ if (success) {
+ success(model, resp);
+ } else {
+ model.trigger('sync', model, resp, options);
+ }
+ };
+ options.error = Backbone.wrapError(options.error, model, options);
+ var method = this.isNew() ? 'create' : 'update';
+ var xhr = (this.sync || Backbone.sync).call(this, method, this, options);
+ if (options.wait) this.set(current, silentOptions);
+ 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 triggerDestroy = function() {
+ model.trigger('destroy', model, model.collection, options);
+ };
+
+ if (this.isNew()) return triggerDestroy();
+ options.success = function(resp) {
+ if (options.wait) triggerDestroy();
+ if (success) {
+ success(model, resp);
+ } else {
+ model.trigger('sync', model, resp, options);
+ }
+ };
+ options.error = Backbone.wrapError(options.error, model, options);
+ var xhr = (this.sync || Backbone.sync).call(this, 'delete', this, options);
+ if (!options.wait) triggerDestroy();
+ return xhr;
+ },
+
+ // Default URL for the model's representation on the server -- if you're
+ // using Backbone's restful methods, override this to change the endpoint
+ // that will be called.
+ url: function() {
+ var base = getValue(this.collection, 'url') || getValue(this, 'urlRoot') || urlError();
+ if (this.isNew()) return base;
+ return base + (base.charAt(base.length - 1) == '/' ? '' : '/') + encodeURIComponent(this.id);
+ },
+
+ // **parse** converts a response into the hash of attributes to be `set` on
+ // the model. The default implementation is just to pass the response along.
+ parse: function(resp, xhr) {
+ return resp;
+ },
+
+ // Create a new model with identical attributes to this one.
+ clone: function() {
+ return new this.constructor(this.attributes);
+ },
+
+ // A model is new if it has never been saved to the server, and lacks an id.
+ isNew: function() {
+ return this.id == null;
+ },
+
+ // Call this method to manually fire a `"change"` event for this model and
+ // a `"change:attribute"` event for each changed attribute.
+ // Calling this will cause all objects observing the model to update.
+ change: function(options) {
+ if (this._changing || !this.hasChanged()) return this;
+ this._changing = true;
+ this._moreChanges = true;
+ for (var attr in this._changed) {
+ this.trigger('change:' + attr, this, this._changed[attr], options);
+ }
+ while (this._moreChanges) {
+ this._moreChanges = false;
+ this.trigger('change', this, options);
+ }
+ this._previousAttributes = _.clone(this.attributes);
+ delete this._changed;
+ this._changing = false;
+ return this;
+ },
+
+ // 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 (!arguments.length) return !_.isEmpty(this._changed);
+ return this._changed && _.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, old = this._previousAttributes;
+ 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 (!arguments.length || !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);
+ },
+
+ // Check if the model is currently in a valid state. It's only possible to
+ // get into an *invalid* state if you're using silent changes.
+ isValid: function() {
+ return !this.validate(this.attributes);
+ },
+
+ // Run validation against a set of incoming attributes, returning `true`
+ // if all is well. If a specific `error` callback has been passed,
+ // call that instead of firing the general `"error"` event.
+ _validate: function(attrs, options) {
+ if (options.silent || !this.validate) return true;
+ attrs = _.extend({}, this.attributes, attrs);
+ var error = this.validate(attrs, options);
+ if (!error) return true;
+ if (options && options.error) {
+ options.error(this, error, options);
+ } else {
+ this.trigger('error', this, error, options);
+ }
+ return false;
+ }
+
+ });
+
+ // Backbone.Collection
+ // -------------------
+
+ // Provides a standard collection class for our sets of models, ordered
+ // or unordered. If a `comparator` is specified, the Collection will maintain
+ // its models in sort order, as they're added and removed.
+ Backbone.Collection = function(models, options) {
+ options || (options = {});
+ if (options.comparator) this.comparator = options.comparator;
+ this._reset();
+ this.initialize.apply(this, arguments);
+ if (models) this.reset(models, {silent: true, parse: options.parse});
+ };
+
+ // Define the Collection's inheritable methods.
+ _.extend(Backbone.Collection.prototype, Backbone.Events, {
+
+ // The default model for a collection is just a **Backbone.Model**.
+ // This should be overridden in most cases.
+ model: Backbone.Model,
+
+ // Initialize is an empty function by default. Override it with your own
+ // initialization logic.
+ initialize: function(){},
+
+ // The JSON representation of a Collection is an array of the
+ // models' attributes.
+ toJSON: function() {
+ return this.map(function(model){ return model.toJSON(); });
+ },
+
+ // Add a model, or list of models to the set. Pass **silent** to avoid
+ // firing the `add` event for every new model.
+ add: function(models, options) {
+ var i, index, length, model, cid, id, cids = {}, ids = {};
+ options || (options = {});
+ models = _.isArray(models) ? models.slice() : [models];
+
+ // Begin by turning bare objects into model references, and preventing
+ // invalid models or duplicate models from being added.
+ for (i = 0, length = models.length; i < length; i++) {
+ if (!(model = models[i] = this._prepareModel(models[i], options))) {
+ throw new Error("Can't add an invalid model to a collection");
+ }
+ if (cids[cid = model.cid] || this._byCid[cid] ||
+ (((id = model.id) != null) && (ids[id] || this._byId[id]))) {
+ throw new Error("Can't add the same model to a collection twice");
+ }
+ cids[cid] = ids[id] = model;
+ }
+
+ // Listen to added models' events, and index models for lookup by
+ // `id` and by `cid`.
+ for (i = 0; i < length; i++) {
+ (model = models[i]).on('all', this._onModelEvent, this);
+ this._byCid[model.cid] = model;
+ if (model.id != null) this._byId[model.id] = model;
+ }
+
+ // Insert models into the collection, re-sorting if needed, and triggering
+ // `add` events unless silenced.
+ this.length += length;
+ index = options.at != null ? options.at : this.models.length;
+ splice.apply(this.models, [index, 0].concat(models));
+ if (this.comparator) this.sort({silent: true});
+ if (options.silent) return this;
+ for (i = 0, length = this.models.length; i < length; i++) {
+ if (!cids[(model = this.models[i]).cid]) continue;
+ options.index = i;
+ model.trigger('add', model, this, options);
+ }
+ return this;
+ },
+
+ // Remove a model, or a list of models from the set. Pass silent to avoid
+ // firing the `remove` event for every model removed.
+ remove: function(models, options) {
+ var i, l, index, model;
+ options || (options = {});
+ models = _.isArray(models) ? models.slice() : [models];
+ for (i = 0, l = models.length; i < l; i++) {
+ model = this.getByCid(models[i]) || this.get(models[i]);
+ if (!model) continue;
+ delete this._byId[model.id];
+ delete this._byCid[model.cid];
+ index = this.indexOf(model);
+ this.models.splice(index, 1);
+ this.length--;
+ if (!options.silent) {
+ options.index = index;
+ model.trigger('remove', model, this, options);
+ }
+ this._removeReference(model);
+ }
+ return this;
+ },
+
+ // Get a model from the set by id.
+ get: function(id) {
+ if (id == null) return null;
+ return this._byId[id.id != null ? id.id : id];
+ },
+
+ // Get a model from the set by client id.
+ getByCid: function(cid) {
+ return cid && this._byCid[cid.cid || cid];
+ },
+
+ // Get the model at the given index.
+ at: function(index) {
+ return this.models[index];
+ },
+
+ // Force the collection to re-sort itself. You don't need to call this under
+ // normal circumstances, as the set will maintain sort order as each item
+ // is added.
+ sort: function(options) {
+ options || (options = {});
+ if (!this.comparator) throw new Error('Cannot sort a set without a comparator');
+ var boundComparator = _.bind(this.comparator, this);
+ if (this.comparator.length == 1) {
+ this.models = this.sortBy(boundComparator);
+ } else {
+ this.models.sort(boundComparator);
+ }
+ if (!options.silent) this.trigger('reset', this, options);
+ return this;
+ },
+
+ // Pluck an attribute from each model in the collection.
+ pluck: function(attr) {
+ return _.map(this.models, function(model){ return model.get(attr); });
+ },
+
+ // When you have more items than you want to add or remove individually,
+ // you can reset the entire set with a new list of models, without firing
+ // any `add` or `remove` events. Fires `reset` when finished.
+ reset: function(models, options) {
+ models || (models = []);
+ options || (options = {});
+ for (var i = 0, l = this.models.length; i < l; i++) {
+ this._removeReference(this.models[i]);
+ }
+ this._reset();
+ this.add(models, {silent: true, parse: options.parse});
+ if (!options.silent) this.trigger('reset', this, options);
+ return this;
+ },
+
+ // Fetch the default set of models for this collection, resetting the
+ // collection when they arrive. If `add: true` is passed, appends the
+ // models to the collection instead of resetting.
+ fetch: function(options) {
+ options = options ? _.clone(options) : {};
+ if (options.parse === undefined) options.parse = true;
+ var collection = this;
+ var success = options.success;
+ options.success = function(resp, status, xhr) {
+ collection[options.add ? 'add' : 'reset'](collection.parse(resp, xhr), options);
+ if (success) success(collection, resp);
+ };
+ options.error = Backbone.wrapError(options.error, collection, options);
+ return (this.sync || Backbone.sync).call(this, 'read', this, options);
+ },
+
+ // Create a new instance of a model in this collection. Add the model to the
+ // collection immediately, unless `wait: true` is passed, in which case we
+ // wait for the server to agree.
+ create: function(model, options) {
+ var coll = this;
+ options = options ? _.clone(options) : {};
+ model = this._prepareModel(model, options);
+ if (!model) return false;
+ if (!options.wait) coll.add(model, options);
+ var success = options.success;
+ options.success = function(nextModel, resp, xhr) {
+ if (options.wait) coll.add(nextModel, options);
+ if (success) {
+ success(nextModel, resp);
+ } else {
+ nextModel.trigger('sync', model, resp, options);
+ }
+ };
+ model.save(null, options);
+ return model;
+ },
+
+ // **parse** converts a response into a list of models to be added to the
+ // collection. The default implementation is just to pass it through.
+ parse: function(resp, xhr) {
+ return resp;
+ },
+
+ // Proxy to _'s chain. Can't be proxied the same way the rest of the
+ // underscore methods are proxied because it relies on the underscore
+ // constructor.
+ chain: function () {
+ return _(this.models).chain();
+ },
+
+ // Reset all internal state. Called when the collection is reset.
+ _reset: function(options) {
+ this.length = 0;
+ this.models = [];
+ this._byId = {};
+ this._byCid = {};
+ },
+
+ // Prepare a model or hash of attributes to be added to this collection.
+ _prepareModel: function(model, options) {
+ if (!(model instanceof Backbone.Model)) {
+ var attrs = model;
+ options.collection = this;
+ model = new this.model(attrs, options);
+ if (!model._validate(model.attributes, options)) model = false;
+ } else if (!model.collection) {
+ model.collection = this;
+ }
+ return model;
+ },
+
+ // Internal method to remove a model's ties to a collection.
+ _removeReference: function(model) {
+ if (this == model.collection) {
+ delete model.collection;
+ }
+ model.off('all', this._onModelEvent, this);
+ },
+
+ // Internal method called every time a model in the set fires an event.
+ // Sets need to update their indexes when models change ids. All other
+ // events simply proxy through. "add" and "remove" events that originate
+ // in other collections are ignored.
+ _onModelEvent: function(ev, model, collection, options) {
+ if ((ev == 'add' || ev == 'remove') && collection != this) return;
+ if (ev == 'destroy') {
+ this.remove(model, options);
+ }
+ if (model && ev === 'change:' + model.idAttribute) {
+ delete this._byId[model.previous(model.idAttribute)];
+ this._byId[model.id] = model;
+ }
+ this.trigger.apply(this, arguments);
+ }
+
+ });
+
+ // Underscore methods that we want to implement on the Collection.
+ var methods = ['forEach', 'each', 'map', 'reduce', 'reduceRight', 'find',
+ 'detect', 'filter', 'select', 'reject', 'every', 'all', 'some', 'any',
+ 'include', 'contains', 'invoke', 'max', 'min', 'sortBy', 'sortedIndex',
+ 'toArray', 'size', 'first', 'initial', 'rest', 'last', 'without', 'indexOf',
+ 'shuffle', 'lastIndexOf', 'isEmpty', 'groupBy'];
+
+ // Mix in each Underscore method as a proxy to `Collection#models`.
+ _.each(methods, function(method) {
+ Backbone.Collection.prototype[method] = function() {
+ return _[method].apply(_, [this.models].concat(_.toArray(arguments)));
+ };
+ });
+
+ // Backbone.Router
+ // -------------------
+
+ // Routers map faux-URLs to actions, and fire events when routes are
+ // matched. Creating a new one sets its `routes` hash, if not set statically.
+ Backbone.Router = function(options) {
+ options || (options = {});
+ if (options.routes) this.routes = options.routes;
+ this._bindRoutes();
+ this.initialize.apply(this, arguments);
+ };
+
+ // Cached regular expressions for matching named param parts and splatted
+ // parts of route strings.
+ var namedParam = /:\w+/g;
+ var splatParam = /\*\w+/g;
+ var escapeRegExp = /[-[\]{}()+?.,\\^$|#\s]/g;
+
+ // Set up all inheritable **Backbone.Router** properties and methods.
+ _.extend(Backbone.Router.prototype, Backbone.Events, {
+
+ // Initialize is an empty function by default. Override it with your own
+ // initialization logic.
+ initialize: function(){},
+
+ // Manually bind a single named route to a callback. For example:
+ //
+ // this.route('search/:query/p:num', 'search', function(query, num) {
+ // ...
+ // });
+ //
+ route: function(route, name, callback) {
+ Backbone.history || (Backbone.history = new Backbone.History);
+ if (!_.isRegExp(route)) route = this._routeToRegExp(route);
+ if (!callback) callback = this[name];
+ Backbone.history.route(route, _.bind(function(fragment) {
+ var args = this._extractParameters(route, fragment);
+ callback && callback.apply(this, args);
+ this.trigger.apply(this, ['route:' + name].concat(args));
+ Backbone.history.trigger('route', this, name, args);
+ }, this));
+ return this;
+ },
+
+ // Simple proxy to `Backbone.history` to save a fragment into the history.
+ navigate: function(fragment, options) {
+ Backbone.history.navigate(fragment, options);
+ },
+
+ // Bind all defined routes to `Backbone.history`. We have to reverse the
+ // order of the routes here to support behavior where the most general
+ // routes can be defined at the bottom of the route map.
+ _bindRoutes: function() {
+ if (!this.routes) return;
+ var routes = [];
+ for (var route in this.routes) {
+ routes.unshift([route, this.routes[route]]);
+ }
+ for (var i = 0, l = routes.length; i < l; i++) {
+ this.route(routes[i][0], routes[i][1], this[routes[i][1]]);
+ }
+ },
+
+ // Convert a route string into a regular expression, suitable for matching
+ // against the current location hash.
+ _routeToRegExp: function(route) {
+ route = route.replace(escapeRegExp, '\\$&')
+ .replace(namedParam, '([^\/]+)')
+ .replace(splatParam, '(.*?)');
+ return new RegExp('^' + route + '$');
+ },
+
+ // Given a route, and a URL fragment that it matches, return the array of
+ // extracted parameters.
+ _extractParameters: function(route, fragment) {
+ return route.exec(fragment).slice(1);
+ }
+
+ });
+
+ // Backbone.History
+ // ----------------
+
+ // Handles cross-browser history management, based on URL fragments. If the
+ // browser does not support `onhashchange`, falls back to polling.
+ Backbone.History = function() {
+ this.handlers = [];
+ _.bindAll(this, 'checkUrl');
+ };
+
+ // Cached regex for cleaning leading hashes and slashes .
+ var routeStripper = /^[#\/]/;
+
+ // Cached regex for detecting MSIE.
+ var isExplorer = /msie [\w.]+/;
+
+ // Has the history handling already been started?
+ var historyStarted = false;
+
+ // Set up all inheritable **Backbone.History** properties and methods.
+ _.extend(Backbone.History.prototype, Backbone.Events, {
+
+ // The default interval to poll for hash changes, if necessary, is
+ // twenty times a second.
+ interval: 50,
+
+ // Get the cross-browser normalized URL fragment, either from the URL,
+ // the hash, or the override.
+ getFragment: function(fragment, forcePushState) {
+ if (fragment == null) {
+ if (this._hasPushState || forcePushState) {
+ fragment = window.location.pathname;
+ var search = window.location.search;
+ if (search) fragment += search;
+ } else {
+ fragment = window.location.hash;
+ }
+ }
+ fragment = decodeURIComponent(fragment);
+ if (!fragment.indexOf(this.options.root)) fragment = fragment.substr(this.options.root.length);
+ 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) {
+
+ // Figure out the initial configuration. Do we need an iframe?
+ // Is pushState desired ... is it available?
+ if (historyStarted) throw new Error("Backbone.history has already been started");
+ this.options = _.extend({}, {root: '/'}, this.options, options);
+ this._wantsHashChange = this.options.hashChange !== false;
+ this._wantsPushState = !!this.options.pushState;
+ this._hasPushState = !!(this.options.pushState && window.history && window.history.pushState);
+ var fragment = this.getFragment();
+ var docMode = document.documentMode;
+ var oldIE = (isExplorer.exec(navigator.userAgent.toLowerCase()) && (!docMode || docMode <= 7));
+ if (oldIE) {
+ this.iframe = $('<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) {
+ $(window).bind('popstate', this.checkUrl);
+ } else if (this._wantsHashChange && ('onhashchange' in window) && !oldIE) {
+ $(window).bind('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;
+ historyStarted = true;
+ var loc = window.location;
+ var atRoot = loc.pathname == this.options.root;
+
+ // 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._wantsHashChange && this._wantsPushState && !this._hasPushState && !atRoot) {
+ this.fragment = this.getFragment(null, true);
+ window.location.replace(this.options.root + '#' + 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._wantsPushState && this._hasPushState && atRoot && loc.hash) {
+ this.fragment = loc.hash.replace(routeStripper, '');
+ window.history.replaceState({}, document.title, loc.protocol + '//' + loc.host + this.options.root + this.fragment);
+ }
+
+ 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() {
+ $(window).unbind('popstate', this.checkUrl).unbind('hashchange', this.checkUrl);
+ clearInterval(this._checkUrlInterval);
+ historyStarted = 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.iframe.location.hash);
+ if (current == this.fragment || current == decodeURIComponent(this.fragment)) return false;
+ if (this.iframe) this.navigate(current);
+ this.loadUrl() || this.loadUrl(window.location.hash);
+ },
+
+ // 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(fragmentOverride) {
+ var fragment = this.fragment = this.getFragment(fragmentOverride);
+ var matched = _.any(this.handlers, function(handler) {
+ if (handler.route.test(fragment)) {
+ handler.callback(fragment);
+ return true;
+ }
+ });
+ return matched;
+ },
+
+ // 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 which to modify the current URL without adding an entry to the history.
+ navigate: function(fragment, options) {
+ if (!historyStarted) return false;
+ if (!options || options === true) options = {trigger: options};
+ var frag = (fragment || '').replace(routeStripper, '');
+ if (this.fragment == frag || this.fragment == decodeURIComponent(frag)) return;
+
+ // If pushState is available, we use it to set the fragment as a real URL.
+ if (this._hasPushState) {
+ if (frag.indexOf(this.options.root) != 0) frag = this.options.root + frag;
+ this.fragment = frag;
+ window.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, frag);
+
+ // If hash changes haven't been explicitly disabled, update the hash
+ // fragment to store history.
+ } else if (this._wantsHashChange) {
+ this.fragment = frag;
+ this._updateHash(window.location, frag, options.replace);
+ if (this.iframe && (frag != this.getFragment(this.iframe.location.hash))) {
+ // 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, frag, options.replace);
+ }
+
+ // If you've told us that you explicitly don't want fallback hashchange-
+ // based history, then `navigate` becomes a page refresh.
+ } else {
+ window.location.assign(this.options.root + fragment);
+ }
+ if (options.trigger) 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) {
+ location.replace(location.toString().replace(/(javascript:|#).*$/, '') + '#' + fragment);
+ } else {
+ location.hash = fragment;
+ }
+ }
+ });
+
+ // Backbone.View
+ // -------------
+
+ // Creating a Backbone.View creates its initial element outside of the DOM,
+ // if an existing element is not provided...
+ Backbone.View = function(options) {
+ this.cid = _.uniqueId('view');
+ this._configure(options || {});
+ this._ensureElement();
+ this.initialize.apply(this, arguments);
+ this.delegateEvents();
+ };
+
+ // Cached regex to split keys for `delegate`.
+ var eventSplitter = /^(\S+)\s*(.*)$/;
+
+ // List of view options to be merged as properties.
+ var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName'];
+
+ // Set up all inheritable **Backbone.View** properties and methods.
+ _.extend(Backbone.View.prototype, Backbone.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 prefered 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 from the DOM. Note that the view isn't present in the
+ // DOM by default, so calling this method may be a no-op.
+ remove: function() {
+ this.$el.remove();
+ return this;
+ },
+
+ // For small amounts of DOM Elements, where a full-blown template isn't
+ // needed, use **make** to manufacture elements, one at a time.
+ //
+ // var el = this.make('li', {'class': 'row'}, this.model.escape('title'));
+ //
+ make: function(tagName, attributes, content) {
+ var el = document.createElement(tagName);
+ if (attributes) $(el).attr(attributes);
+ if (content) $(el).html(content);
+ return el;
+ },
+
+ // Change the view's element (`this.el` property), including event
+ // re-delegation.
+ setElement: function(element, delegate) {
+ this.$el = $(element);
+ this.el = this.$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 = getValue(this, 'events')))) return;
+ this.undelegateEvents();
+ for (var key in events) {
+ var method = events[key];
+ if (!_.isFunction(method)) method = this[events[key]];
+ if (!method) throw new Error('Event "' + events[key] + '" does not exist');
+ var match = key.match(eventSplitter);
+ var eventName = match[1], selector = match[2];
+ method = _.bind(method, this);
+ eventName += '.delegateEvents' + this.cid;
+ if (selector === '') {
+ this.$el.bind(eventName, method);
+ } else {
+ this.$el.delegate(selector, eventName, method);
+ }
+ }
+ },
+
+ // 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.$el.unbind('.delegateEvents' + this.cid);
+ },
+
+ // Performs the initial configuration of a View with a set of options.
+ // Keys with special meaning *(model, collection, id, className)*, are
+ // attached directly to the view.
+ _configure: function(options) {
+ if (this.options) options = _.extend({}, this.options, options);
+ for (var i = 0, l = viewOptions.length; i < l; i++) {
+ var attr = viewOptions[i];
+ if (options[attr]) this[attr] = options[attr];
+ }
+ this.options = options;
+ },
+
+ // Ensure that the View has a DOM element to render into.
+ // If `this.el` is a string, pass it through `$()`, 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 = getValue(this, 'attributes') || {};
+ if (this.id) attrs.id = this.id;
+ if (this.className) attrs['class'] = this.className;
+ this.setElement(this.make(this.tagName, attrs), false);
+ } else {
+ this.setElement(this.el, false);
+ }
+ }
+
+ });
+
+ // The self-propagating extend function that Backbone classes use.
+ var extend = function (protoProps, classProps) {
+ var child = inherits(this, protoProps, classProps);
+ child.extend = this.extend;
+ return child;
+ };
+
+ // Set up inheritance for the model, collection, and view.
+ Backbone.Model.extend = Backbone.Collection.extend =
+ Backbone.Router.extend = Backbone.View.extend = extend;
+
+ // Backbone.sync
+ // -------------
+
+ // Map from CRUD to HTTP for our default `Backbone.sync` implementation.
+ var methodMap = {
+ 'create': 'POST',
+ 'update': 'PUT',
+ 'delete': 'DELETE',
+ 'read': 'GET'
+ };
+
+ // 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 JSON-request options.
+ var params = {type: type, dataType: 'json'};
+
+ // Ensure that we have a URL.
+ if (!options.url) {
+ params.url = getValue(model, 'url') || urlError();
+ }
+
+ // Ensure that we have the appropriate request data.
+ if (!options.data && model && (method == 'create' || method == 'update')) {
+ params.contentType = 'application/json';
+ params.data = JSON.stringify(model.toJSON());
+ }
+
+ // For older servers, emulate JSON by encoding the request into an HTML-form.
+ if (Backbone.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 (Backbone.emulateHTTP) {
+ if (type === 'PUT' || type === 'DELETE') {
+ if (Backbone.emulateJSON) params.data._method = type;
+ params.type = 'POST';
+ params.beforeSend = function(xhr) {
+ xhr.setRequestHeader('X-HTTP-Method-Override', type);
+ };
+ }
+ }
+
+ // Don't process data on a non-GET request.
+ if (params.type !== 'GET' && !Backbone.emulateJSON) {
+ params.processData = false;
+ }
+
+ // Make the request, allowing the user to override any Ajax options.
+ return $.ajax(_.extend(params, options));
+ };
+
+ // Wrap an optional error callback with a fallback error event.
+ Backbone.wrapError = function(onError, originalModel, options) {
+ return function(model, resp) {
+ resp = model === originalModel ? resp : model;
+ if (onError) {
+ onError(originalModel, resp, options);
+ } else {
+ originalModel.trigger('error', originalModel, resp, options);
+ }
+ };
+ };
+
+ // Helpers
+ // -------
+
+ // Shared empty constructor function to aid in prototype-chain creation.
+ var ctor = function(){};
+
+ // 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 inherits = function(parent, protoProps, staticProps) {
+ 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 && protoProps.hasOwnProperty('constructor')) {
+ child = protoProps.constructor;
+ } else {
+ child = function(){ parent.apply(this, arguments); };
+ }
+
+ // Inherit class (static) properties from parent.
+ _.extend(child, parent);
+
+ // Set the prototype chain to inherit from `parent`, without calling
+ // `parent`'s constructor function.
+ ctor.prototype = parent.prototype;
+ child.prototype = new ctor();
+
+ // Add prototype properties (instance properties) to the subclass,
+ // if supplied.
+ if (protoProps) _.extend(child.prototype, protoProps);
+
+ // Add static properties to the constructor function, if supplied.
+ if (staticProps) _.extend(child, staticProps);
+
+ // Correctly set child's `prototype.constructor`.
+ child.prototype.constructor = child;
+
+ // Set a convenience property in case the parent's prototype is needed later.
+ child.__super__ = parent.prototype;
+
+ return child;
+ };
+
+ // Helper function to get a value from a Backbone object as a property
+ // or as a function.
+ var getValue = function(object, prop) {
+ if (!(object && object[prop])) return null;
+ return _.isFunction(object[prop]) ? object[prop]() : object[prop];
+ };
+
+ // 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');
+ };
+
+}).call(this);
View
280 app/assets/javascripts/lib/ember-rest.js
@@ -1,280 +0,0 @@
-/**
- Ember-REST.js
-
- A simple library for RESTful resources in Ember.js
-
- Copyright (c) 2012 Cerebris Corporation
-
- Licensed under the MIT license:
- http://www.opensource.org/licenses/mit-license.php
-*/
-
-/**
- A model class for RESTful resources
-
- Extend this class and define the following properties:
-
- * `resourceUrl` -- the base url of the resource (e.g. '/contacts');
- will append '/id' for individual resources (required)
- * `resourceName` -- the name used to contain the serialized data in this
- object's JSON representation (required only for serialization)
- * `resourceProperties` -- an array of property names to be returned in this
- object's JSON representation (required only for serialization)
-
- Because `resourceName` and `resourceProperties` are only used for
- serialization, they aren't required for read-only resources.
-
- You may also wish to override / define the following methods:
-
- * `serialize()`
- * `serializeProperty(prop)`
- * `deserialize(json)`
- * `deserializeProperty(prop, value)`
- * `validate()`
-*/
-Ember.Resource = Ember.Object.extend({
- resourceUrl: Ember.required(),
-
- /**
- Duplicate properties from another resource
-
- * `source` -- an Ember.Resource object
- * `props` -- the array of properties to be duplicated;
- defaults to `resourceProperties`
- */
- duplicateProperties: function(source, props) {
- var prop;
-
- if (props === undefined) props = this.resourceProperties;
-
- for(var i = 0; i < props.length; i++) {
- prop = props[i];
- this.set(prop, source.get(prop));
- }
- },
-
- /**
- Generate this resource's JSON representation
-
- Override this or `serializeProperty` to provide custom serialization
-
- REQUIRED: `resourceProperties` and `resourceName` (see note above)
- */
- serialize: function() {
- var name = this.resourceName,
- props = this.resourceProperties,
- prop,
- ret = {};
-
- ret[name] = {};
- for(var i = 0; i < props.length; i++) {
- prop = props[i];
- ret[name][prop] = this.serializeProperty(prop);
- }
- return ret;
- },
-
- /**
- Generate an individual property's JSON representation
-
- Override to provide custom serialization
- */
- serializeProperty: function(prop) {
- return this.get(prop);
- },
-
- /**
- Set this resource's properties from JSON
-
- Override this or `deserializeProperty` to provide custom deserialization
- */
- deserialize: function(json) {
- Ember.beginPropertyChanges(this);
- for(var prop in json) {
- if (json.hasOwnProperty(prop)) this.deserializeProperty(prop, json[prop]);
- }
- Ember.endPropertyChanges(this);
- return this;
- },
-
- /**
- Set an individual property from its value in JSON
-
- Override to provide custom serialization
- */
- deserializeProperty: function(prop, value) {
- this.set(prop, value);
- },
-
- /**
- Load via ajax and deserialize
-
- REQUIRED: `id`
- */
- findResource: function() {
- var self = this;
-
- return jQuery.ajax({
- url: this._resourceUrl(),
- dataType: 'json',
- type: 'GET'
- }).done( function(json) {
- self.deserialize(json);
- });
- },
-
- /**
- Create (if new) or update (if existing) record via ajax
-
- Will call validate() if defined for this record
-
- If successful, updates this record's id and other properties
- by calling `deserialize()` with the data returned.
-
- REQUIRED: `properties` and `name` (see note above)
- */
- saveResource: function() {
- var self = this;
-
- if (this.validate !== undefined) {
- var error = this.validate();
- if (error) {
- return {
- fail: function(f) { f(error); return this; },
- done: function() { return this; },
- always: function(f) { f(); return this; }
- };
- }
- }
-
- return jQuery.ajax({
- url: this._resourceUrl(),
- data: this.serialize(),
- dataType: 'json',
- type: (this.isNew() ? 'POST' : 'PUT')
- }).done( function(json) {
- // Update properties
- if (json)
- self.deserialize(json);
- });
- },
-
- /**
- Delete resource via ajax
- */
- destroyResource: function() {
- return jQuery.ajax({
- url: this._resourceUrl(),
- dataType: 'json',
- type: 'DELETE'
- });
- },
-
- /**
- Is this a new resource?
- */
- isNew: function() {
- return (this._id() === undefined);
- },
-
- /**
- @private
-
- The URL for this resource, based on `resourceUrl` and `id` (which will be
- undefined for new resources).
- */
- _resourceUrl: function() {
- var url = this.resourceUrl,
- id = this._id();
-
- if (id !== undefined)
- url += '/' + id;
-
- return url;
- },
-
- /**
- @private
-
- The id for this resource.
- */
- _id: function() {
- return this.get('id');
- }
-});
-
-/**
- A controller for RESTful resources
-
- Extend this class and define the following:
-
- * `resourceType` -- an Ember.Resource class; the class must have a `serialize()` method
- that returns a JSON representation of the object
- * `resourceUrl` -- (optional) the base url of the resource (e.g. '/contacts/active');
- will default to the `resourceUrl` for `resourceType`
-*/
-Ember.ResourceController = Ember.ArrayController.extend({
- resourceType: Ember.required(),
-
- /**
- @private
- */
- init: function() {
- this._super();
- this.clearAll();
- },
-
- /**
- Create and load a single `Ember.Resource` from JSON
- */
- load: function(json) {
- var resource = this.get('resourceType').create().deserialize(json);
- this.pushObject(resource);
- },
-
- /**
- Create and load `Ember.Resource` objects from a JSON array
- */
- loadAll: function(json) {
- for (var i=0; i < json.length; i++)
- this.load(json[i]);
- },
-
- /**
- Clear this controller's contents (without deleting remote resources)
- */
- clearAll: function() {
- this.set("content", []);
- },
-
- /**
- Replace this controller's contents with an ajax call to `url`
- */
- findAll: function() {
- var self = this;
-
- return jQuery.ajax({
- url: this._resourceUrl(),
- dataType: 'json',
- type: 'GET'
- }).done( function(json) {
- self.clearAll();
- self.loadAll(json);
- });
- },
-
- /**
- @private
-
- Base URL for ajax calls
-
- Will use the `resourceUrl` set for this controller, or if that's missing,
- the `resourceUrl` specified for `resourceType`.
- */
- _resourceUrl: function() {
- if (this.resourceUrl === undefined)
- return this.get('resourceType').prototype.resourceUrl;
- else
- return this.resourceUrl;
- }
-});
View
999 app/assets/javascripts/lib/underscore.js
@@ -0,0 +1,999 @@
+// Underscore.js 1.3.1
+// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
+// For all details and documentation:
+// http://documentcloud.github.com/underscore
+
+(function() {
+
+ // Baseline setup
+ // --------------
+
+ // Establish the root object, `window` in the browser, or `global` 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 slice = ArrayProto.slice,
+ unshift = ArrayProto.unshift,
+ 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) { return new wrapper(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 = '1.3.1';
+
+ // 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;
+ if (nativeForEach && obj.forEach === nativeForEach) {
+ obj.forEach(iterator, context);
+ } else if (obj.length === +obj.length) {
+ for (var i = 0, l = obj.length; i < l; i++) {
+ if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
+ }
+ } else {
+ for (var key in obj) {
+ if (_.has(obj, key)) {
+ if (iterator.call(context, obj[key], key, obj) === breaker) return;
+ }
+ }
+ }
+ };
+
+ // 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[results.length] = iterator.call(context, value, index, list);
+ });
+ if (obj.length === +obj.length) results.length = obj.length;
+ return results;
+ };
+
+ // **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('Reduce of empty array with no initial value');
+ 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 reversed = _.toArray(obj).reverse();
+ if (context && !initial) iterator = _.bind(iterator, context);
+ return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
+ };
+
+ // Return the first value which passes a truth test. Aliased as `detect`.
+ _.find = _.detect = function(obj, iterator, context) {
+ var result;
+ any(obj, function(value, index, list) {
+ if (iterator.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, iterator, context) {
+ var results = [];
+ if (obj == null) return results;
+ if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
+ each(obj, function(value, index, list) {
+ if (iterator.call(context, value, index, list)) results[results.length] = value;
+ });
+ return results;
+ };
+
+ // Return all the elements for which a truth test fails.
+ _.reject = function(obj, iterator, context) {
+ var results = [];
+ if (obj == null) return results;
+ each(obj, function(value, index, list) {
+ if (!iterator.call(context, value, index, list)) results[results.length] = value;
+ });
+ return results;
+ };
+
+ // 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, iterator, context) {
+ var result = true;
+ if (obj == null) return result;
+ if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
+ each(obj, function(value, index, list) {
+ if (!(result = result && iterator.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, iterator, context) {
+ iterator || (iterator = _.identity);
+ var result = false;
+ if (obj == null) return result;
+ if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
+ each(obj, function(value, index, list) {
+ if (result || (result = iterator.call(context, value, index, list))) return breaker;
+ });
+ return !!result;
+ };
+
+ // Determine if a given value is included in the array or object using `===`.
+ // Aliased as `contains`.
+ _.include = _.contains = function(obj, target) {
+ var found = false;
+ if (obj == null) return found;
+ if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+ found = any(obj, function(value) {
+ return value === target;
+ });
+ return found;
+ };
+
+ // Invoke a method (with arguments) on every item in a collection.
+ _.invoke = function(obj, method) {
+ var args = slice.call(arguments, 2);
+ return _.map(obj, function(value) {
+ return (_.isFunction(method) ? method || value : value[method]).apply(value, args);
+ });
+ };
+
+ // Convenience version of a common use case of `map`: fetching a property.
+ _.pluck = function(obj, key) {
+ return _.map(obj, function(value){ return value[key]; });
+ };
+
+ // Return the maximum element or (element-based computation).
+ _.max = function(obj, iterator, context) {
+ if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
+ if (!iterator && _.isEmpty(obj)) return -Infinity;
+ var result = {computed : -Infinity};
+ each(obj, function(value, index, list) {
+ var computed = iterator ? iterator.call(context, value, index, list) : value;
+ computed >= result.computed && (result = {value : value, computed : computed});
+ });
+ return result.value;
+ };
+
+ // Return the minimum element (or element-based computation).
+ _.min = function(obj, iterator, context) {
+ if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
+ if (!iterator && _.isEmpty(obj)) return Infinity;
+ var result = {computed : Infinity};
+ each(obj, function(value, index, list) {
+ var computed = iterator ? iterator.call(context, value, index, list) : value;
+ computed < result.computed && (result = {value : value, computed : computed});
+ });
+ return result.value;
+ };
+
+ // Shuffle an array.
+ _.shuffle = function(obj) {
+ var shuffled = [], rand;
+ each(obj, function(value, index, list) {
+ if (index == 0) {
+ shuffled[0] = value;
+ } else {
+ rand = Math.floor(Math.random() * (index + 1));
+ shuffled[index] = shuffled[rand];
+ shuffled[rand] = value;
+ }
+ });
+ return shuffled;
+ };
+
+ // Sort the object's values by a criterion produced by an iterator.
+ _.sortBy = function(obj, iterator, context) {
+ return _.pluck(_.map(obj, function(value, index, list) {
+ return {
+ value : value,
+ criteria : iterator.call(context, value, index, list)
+ };
+ }).sort(function(left, right) {
+ var a = left.criteria, b = right.criteria;
+ return a < b ? -1 : a > b ? 1 : 0;
+ }), 'value');
+ };
+
+ // Groups the object's values by a criterion. Pass either a string attribute
+ // to group by, or a function that returns the criterion.
+ _.groupBy = function(obj, val) {
+ var result = {};
+ var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
+ each(obj, function(value, index) {
+ var key = iterator(value, index);
+ (result[key] || (result[key] = [])).push(value);
+ });
+ return result;
+ };
+
+ // Use a comparator function to figure out at what index an object should
+ // be inserted so as to maintain order. Uses binary search.
+ _.sortedIndex = function(array, obj, iterator) {
+ iterator || (iterator = _.identity);
+ var low = 0, high = array.length;
+ while (low < high) {
+ var mid = (low + high) >> 1;
+ iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
+ }
+ return low;
+ };
+
+ // Safely convert anything iterable into a real, live array.
+ _.toArray = function(iterable) {
+ if (!iterable) return [];
+ if (iterable.toArray) return iterable.toArray();
+ if (_.isArray(iterable)) return slice.call(iterable);
+ if (_.isArguments(iterable)) return slice.call(iterable);
+ return _.values(iterable);
+ };
+
+ // Return the number of elements in an object.
+ _.size = function(obj) {
+ return _.toArray(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`. The **guard** check allows it to work
+ // with `_.map`.