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@@ -1,1429 +0,0 @@
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-// Backbone.js 0.9.2
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-
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-// (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc.
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-// Backbone may be freely distributed under the MIT license.
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-// For all details and documentation:
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-// http://backbonejs.org
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-
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-(function(root, factory) {
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- // Set up Backbone appropriately for the environment.
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- if (typeof exports !== 'undefined') {
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- // Node/CommonJS, no need for jQuery in that case.
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- factory(root, exports, require('underscore'));
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- } else if (typeof define === 'function' && define.amd) {
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- // AMD
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- define(['underscore', 'jquery', 'exports'], function(_, $, exports) {
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- // Export global even in AMD case in case this script is loaded with
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- // others that may still expect a global Backbone.
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- root.Backbone = factory(root, exports, _, $);
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- });
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- } else {
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- // Browser globals
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- root.Backbone = factory(root, {}, root._, (root.jQuery || root.Zepto || root.ender));
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- }
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-}(this, function(root, Backbone, _, $) {
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-
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- // Initial Setup
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- // -------------
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-
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- // Save the previous value of the `Backbone` variable, so that it can be
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- // restored later on, if `noConflict` is used.
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- var previousBackbone = root.Backbone;
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-
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- // Create a local reference to slice/splice.
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- var slice = Array.prototype.slice;
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- var splice = Array.prototype.splice;
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-
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- // Current version of the library. Keep in sync with `package.json`.
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- Backbone.VERSION = '0.9.2';
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-
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- // Set the JavaScript library that will be used for DOM manipulation and
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- // Ajax calls (a.k.a. the `$` variable). By default Backbone will use: jQuery,
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- // Zepto, or Ender; but the `setDomLibrary()` method lets you inject an
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- // alternate JavaScript library (or a mock library for testing your views
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- // outside of a browser).
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- Backbone.setDomLibrary = function(lib) {
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- $ = lib;
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- };
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-
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- // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable
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- // to its previous owner. Returns a reference to this Backbone object.
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- Backbone.noConflict = function() {
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- root.Backbone = previousBackbone;
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- return Backbone;
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- };
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-
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- // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option
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- // will fake `"PUT"` and `"DELETE"` requests via the `_method` parameter and
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- // set a `X-Http-Method-Override` header.
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- Backbone.emulateHTTP = false;
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-
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- // Turn on `emulateJSON` to support legacy servers that can't deal with direct
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- // `application/json` requests ... will encode the body as
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- // `application/x-www-form-urlencoded` instead and will send the model in a
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- // form param named `model`.
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- Backbone.emulateJSON = false;
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-
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- // Backbone.Events
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- // -----------------
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-
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- // Regular expression used to split event strings
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- var eventSplitter = /\s+/;
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-
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- // A module that can be mixed in to *any object* in order to provide it with
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- // custom events. You may bind with `on` or remove with `off` callback functions
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- // to an event; trigger`-ing an event fires all callbacks in succession.
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- //
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- // var object = {};
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- // _.extend(object, Backbone.Events);
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- // object.on('expand', function(){ alert('expanded'); });
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- // object.trigger('expand');
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- //
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- var Events = Backbone.Events = {
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-
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- // Bind one or more space separated events, `events`, to a `callback`
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- // function. Passing `"all"` will bind the callback to all events fired.
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- on: function(events, callback, context) {
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-
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- var calls, event, node, tail, list;
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- if (!callback) return this;
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- events = events.split(eventSplitter);
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- calls = this._callbacks || (this._callbacks = {});
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-
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- // Create an immutable callback list, allowing traversal during
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- // modification. The tail is an empty object that will always be used
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- // as the next node.
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- while (event = events.shift()) {
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- list = calls[event];
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- node = list ? list.tail : {};
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- node.next = tail = {};
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- node.context = context;
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- node.callback = callback;
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- calls[event] = {tail: tail, next: list ? list.next : node};
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- }
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-
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- return this;
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- },
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-
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- // Remove one or many callbacks. If `context` is null, removes all callbacks
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- // with that function. If `callback` is null, removes all callbacks for the
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- // event. If `events` is null, removes all bound callbacks for all events.
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- off: function(events, callback, context) {
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- var event, calls, node, tail, cb, ctx;
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-
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- // No events, or removing *all* events.
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- if (!(calls = this._callbacks)) return;
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- if (!(events || callback || context)) {
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- delete this._callbacks;
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- return this;
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- }
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-
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- // Loop through the listed events and contexts, splicing them out of the
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- // linked list of callbacks if appropriate.
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- events = events ? events.split(eventSplitter) : _.keys(calls);
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- while (event = events.shift()) {
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- node = calls[event];
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- delete calls[event];
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- if (!node || !(callback || context)) continue;
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- // Create a new list, omitting the indicated callbacks.
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- tail = node.tail;
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- while ((node = node.next) !== tail) {
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- cb = node.callback;
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- ctx = node.context;
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- if ((callback && cb !== callback) || (context && ctx !== context)) {
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- this.on(event, cb, ctx);
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- }
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- }
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- }
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-
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- return this;
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- },
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-
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- // Trigger one or many events, firing all bound callbacks. Callbacks are
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- // passed the same arguments as `trigger` is, apart from the event name
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- // (unless you're listening on `"all"`, which will cause your callback to
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- // receive the true name of the event as the first argument).
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- trigger: function(events) {
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- var event, node, calls, tail, args, all, rest;
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- if (!(calls = this._callbacks)) return this;
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- all = calls.all;
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- events = events.split(eventSplitter);
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- rest = slice.call(arguments, 1);
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-
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- // For each event, walk through the linked list of callbacks twice,
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- // first to trigger the event, then to trigger any `"all"` callbacks.
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- while (event = events.shift()) {
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- if (node = calls[event]) {
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- tail = node.tail;
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- while ((node = node.next) !== tail) {
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- node.callback.apply(node.context || this, rest);
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- }
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- }
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- if (node = all) {
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- tail = node.tail;
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- args = [event].concat(rest);
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- while ((node = node.next) !== tail) {
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- node.callback.apply(node.context || this, args);
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- }
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- }
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- }
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-
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- return this;
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- }
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-
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- };
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-
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- // Aliases for backwards compatibility.
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- Events.bind = Events.on;
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- Events.unbind = Events.off;
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-
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- // Backbone.Model
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- // --------------
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-
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- // Create a new model, with defined attributes. A client id (`cid`)
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- // is automatically generated and assigned for you.
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- var Model = Backbone.Model = function(attributes, options) {
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- var defaults;
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- attributes || (attributes = {});
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- if (options && options.parse) attributes = this.parse(attributes);
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- if (defaults = getValue(this, 'defaults')) {
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- attributes = _.extend({}, defaults, attributes);
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- }
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- if (options && options.collection) this.collection = options.collection;
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- this.attributes = {};
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- this._escapedAttributes = {};
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- this.cid = _.uniqueId('c');
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- this.changed = {};
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- this._silent = {};
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- this._pending = {};
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- this.set(attributes, {silent: true});
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- // Reset change tracking.
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- this.changed = {};
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- this._silent = {};
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- this._pending = {};
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- this._previousAttributes = _.clone(this.attributes);
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- this.initialize.apply(this, arguments);
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- };
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-
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- // Attach all inheritable methods to the Model prototype.
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- _.extend(Model.prototype, Events, {
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-
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- // A hash of attributes whose current and previous value differ.
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- changed: null,
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-
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- // A hash of attributes that have silently changed since the last time
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- // `change` was called. Will become pending attributes on the next call.
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- _silent: null,
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-
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- // A hash of attributes that have changed since the last `'change'` event
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- // began.
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- _pending: null,
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-
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- // The default name for the JSON `id` attribute is `"id"`. MongoDB and
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- // CouchDB users may want to set this to `"_id"`.
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- idAttribute: 'id',
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-
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- // Initialize is an empty function by default. Override it with your own
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- // initialization logic.
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- initialize: function(){},
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-
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- // Return a copy of the model's `attributes` object.
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- toJSON: function(options) {
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- return _.clone(this.attributes);
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- },
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-
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- // Get the value of an attribute.
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- get: function(attr) {
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- return this.attributes[attr];
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- },
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-
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- // Get the HTML-escaped value of an attribute.
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- escape: function(attr) {
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- var html;
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- if (html = this._escapedAttributes[attr]) return html;
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- var val = this.get(attr);
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- return this._escapedAttributes[attr] = _.escape(val == null ? '' : '' + val);
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- },
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-
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- // Returns `true` if the attribute contains a value that is not null
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- // or undefined.
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- has: function(attr) {
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- return this.get(attr) != null;
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- },
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-
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- // Set a hash of model attributes on the object, firing `"change"` unless
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- // you choose to silence it.
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- set: function(key, value, options) {
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- var attrs, attr, val;
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-
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- // Handle both `"key", value` and `{key: value}` -style arguments.
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- if (_.isObject(key) || key == null) {
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- attrs = key;
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- options = value;
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- } else {
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- attrs = {};
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- attrs[key] = value;
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- }
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-
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- // Extract attributes and options.
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- options || (options = {});
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- if (!attrs) return this;
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- if (attrs instanceof Model) attrs = attrs.attributes;
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- if (options.unset) for (attr in attrs) attrs[attr] = void 0;
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-
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- // Run validation.
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- if (!this._validate(attrs, options)) return false;
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-
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- // Check for changes of `id`.
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- if (this.idAttribute in attrs) this.id = attrs[this.idAttribute];
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-
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- var changes = options.changes = {};
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- var now = this.attributes;
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- var escaped = this._escapedAttributes;
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- var prev = this._previousAttributes || {};
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-
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- // For each `set` attribute...
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- for (attr in attrs) {
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- val = attrs[attr];
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-
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- // If the new and current value differ, record the change.
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- if (!_.isEqual(now[attr], val) || (options.unset && _.has(now, attr))) {
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- delete escaped[attr];
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- (options.silent ? this._silent : changes)[attr] = true;
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- }
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-
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- // Update or delete the current value.
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- options.unset ? delete now[attr] : now[attr] = val;
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-
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- // If the new and previous value differ, record the change. If not,
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- // then remove changes for this attribute.
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- if (!_.isEqual(prev[attr], val) || (_.has(now, attr) != _.has(prev, attr))) {
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- this.changed[attr] = val;
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- if (!options.silent) this._pending[attr] = true;
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- } else {
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- delete this.changed[attr];
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- delete this._pending[attr];
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- }
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- }
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-
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- // Fire the `"change"` events.
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- if (!options.silent) this.change(options);
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- return this;
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- },
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-
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- // Remove an attribute from the model, firing `"change"` unless you choose
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- // to silence it. `unset` is a noop if the attribute doesn't exist.
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- unset: function(attr, options) {
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- (options || (options = {})).unset = true;
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- return this.set(attr, null, options);
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- },
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-
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- // Clear all attributes on the model, firing `"change"` unless you choose
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- // to silence it.
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- clear: function(options) {
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- (options || (options = {})).unset = true;
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- return this.set(_.clone(this.attributes), options);
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- },
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-
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- // Fetch the model from the server. If the server's representation of the
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- // model differs from its current attributes, they will be overriden,
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- // triggering a `"change"` event.
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- fetch: function(options) {
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- options = options ? _.clone(options) : {};
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- var model = this;
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- var success = options.success;
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- options.success = function(resp, status, xhr) {
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- if (!model.set(model.parse(resp, xhr), options)) return false;
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- if (success) success(model, resp);
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- };
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- options.error = Backbone.wrapError(options.error, model, options);
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- return (this.sync || Backbone.sync).call(this, 'read', this, options);
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- },
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-
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- // Set a hash of model attributes, and sync the model to the server.
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- // If the server returns an attributes hash that differs, the model's
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- // state will be `set` again.
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- save: function(key, value, options) {
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- var attrs, current;
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-
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- // Handle both `("key", value)` and `({key: value})` -style calls.
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- if (_.isObject(key) || key == null) {
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- attrs = key;
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- options = value;
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- } else {
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- attrs = {};
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- attrs[key] = value;
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- }
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- options = options ? _.clone(options) : {};
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-
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- // If we're "wait"-ing to set changed attributes, validate early.
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- if (options.wait) {
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- if (!this._validate(attrs, options)) return false;
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- current = _.clone(this.attributes);
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- }
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-
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- // Regular saves `set` attributes before persisting to the server.
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- var silentOptions = _.extend({}, options, {silent: true});
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- if (attrs && !this.set(attrs, options.wait ? silentOptions : options)) {
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- return false;
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- }
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-
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- // After a successful server-side save, the client is (optionally)
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- // updated with the server-side state.
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- var model = this;
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- var success = options.success;
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- options.success = function(resp, status, xhr) {
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- var serverAttrs = model.parse(resp, xhr);
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- if (options.wait) {
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- delete options.wait;
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- serverAttrs = _.extend(attrs || {}, serverAttrs);
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- }
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- if (!model.set(serverAttrs, options)) return false;
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- if (success) {
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- success(model, resp);
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- } else {
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- model.trigger('sync', model, resp, options);
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- }
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- };
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-
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- // Finish configuring and sending the Ajax request.
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- options.error = Backbone.wrapError(options.error, model, options);
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- var method = this.isNew() ? 'create' : 'update';
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- var xhr = (this.sync || Backbone.sync).call(this, method, this, options);
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- if (options.wait) this.set(current, silentOptions);
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- return xhr;
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- },
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-
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- // Destroy this model on the server if it was already persisted.
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- // Optimistically removes the model from its collection, if it has one.
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- // If `wait: true` is passed, waits for the server to respond before removal.
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- destroy: function(options) {
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- options = options ? _.clone(options) : {};
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- var model = this;
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- var success = options.success;
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-
|
|
|
- var triggerDestroy = function() {
|
|
|
- model.trigger('destroy', model, model.collection, options);
|
|
|
- };
|
|
|
-
|
|
|
- if (this.isNew()) {
|
|
|
- triggerDestroy();
|
|
|
- return false;
|
|
|
- }
|
|
|
-
|
|
|
- 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, 'urlRoot') || getValue(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, 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) {
|
|
|
- options || (options = {});
|
|
|
- var changing = this._changing;
|
|
|
- this._changing = true;
|
|
|
-
|
|
|
- // Silent changes become pending changes.
|
|
|
- for (var attr in this._silent) this._pending[attr] = true;
|
|
|
-
|
|
|
- // Silent changes are triggered.
|
|
|
- var changes = _.extend({}, options.changes, this._silent);
|
|
|
- this._silent = {};
|
|
|
- for (var attr in changes) {
|
|
|
- this.trigger('change:' + attr, this, this.get(attr), options);
|
|
|
- }
|
|
|
- if (changing) return this;
|
|
|
-
|
|
|
- // Continue firing `"change"` events while there are pending changes.
|
|
|
- while (!_.isEmpty(this._pending)) {
|
|
|
- this._pending = {};
|
|
|
- this.trigger('change', this, options);
|
|
|
- // Pending and silent changes still remain.
|
|
|
- for (var attr in this.changed) {
|
|
|
- if (this._pending[attr] || this._silent[attr]) continue;
|
|
|
- delete this.changed[attr];
|
|
|
- }
|
|
|
- this._previousAttributes = _.clone(this.attributes);
|
|
|
- }
|
|
|
-
|
|
|
- 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 _.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 the next complete set of model 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.
|
|
|
- var Collection = Backbone.Collection = function(models, options) {
|
|
|
- options || (options = {});
|
|
|
- if (options.model) this.model = options.model;
|
|
|
- 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(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); });
|
|
|
- },
|
|
|
-
|
|
|
- // 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 = {}, dups = [];
|
|
|
- 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");
|
|
|
- }
|
|
|
- cid = model.cid;
|
|
|
- id = model.id;
|
|
|
- if (cids[cid] || this._byCid[cid] || ((id != null) && (ids[id] || this._byId[id]))) {
|
|
|
- dups.push(i);
|
|
|
- continue;
|
|
|
- }
|
|
|
- cids[cid] = ids[id] = model;
|
|
|
- }
|
|
|
-
|
|
|
- // Remove duplicates.
|
|
|
- i = dups.length;
|
|
|
- while (i--) {
|
|
|
- models.splice(dups[i], 1);
|
|
|
- }
|
|
|
-
|
|
|
- // Listen to added models' events, and index models for lookup by
|
|
|
- // `id` and by `cid`.
|
|
|
- for (i = 0, length = models.length; 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;
|
|
|
- },
|
|
|
-
|
|
|
- // Add a model to the end of the collection.
|
|
|
- push: function(model, options) {
|
|
|
- model = this._prepareModel(model, options);
|
|
|
- this.add(model, options);
|
|
|
- return model;
|
|
|
- },
|
|
|
-
|
|
|
- // 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) {
|
|
|
- model = this._prepareModel(model, options);
|
|
|
- this.add(model, _.extend({at: 0}, options));
|
|
|
- return model;
|
|
|
- },
|
|
|
-
|
|
|
- // Remove a model from the beginning of the collection.
|
|
|
- shift: function(options) {
|
|
|
- var model = this.at(0);
|
|
|
- this.remove(model, options);
|
|
|
- return model;
|
|
|
- },
|
|
|
-
|
|
|
- // Get a model from the set by id.
|
|
|
- get: function(id) {
|
|
|
- if (id == null) return void 0;
|
|
|
- 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];
|
|
|
- },
|
|
|
-
|
|
|
- // Return models with matching attributes. Useful for simple cases of `filter`.
|
|
|
- where: function(attrs) {
|
|
|
- if (_.isEmpty(attrs)) return [];
|
|
|
- return this.filter(function(model) {
|
|
|
- for (var key in attrs) {
|
|
|
- if (attrs[key] !== model.get(key)) return false;
|
|
|
- }
|
|
|
- return 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) {
|
|
|
- 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, _.extend({silent: true}, options));
|
|
|
- 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) {
|
|
|
- options || (options = {});
|
|
|
- if (!(model instanceof 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(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)];
|
|
|
- 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) {
|
|
|
- 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.
|
|
|
- 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 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) {
|
|
|
- Backbone.history || (Backbone.history = new 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 + '$');
|
|
|
- },
|
|
|
-
|
|
|
- // Given a route, and a URL fragment that it matches, return the array of
|
|
|
- // extracted parameters.
|
|
|
- _extractParameters: function(route, fragment) {
|
|
|
- return route.exec(fragment).slice(1);
|
|
|
- }
|
|
|
-
|
|
|
- });
|
|
|
-
|
|
|
- // Backbone.History
|
|
|
- // ----------------
|
|
|
-
|
|
|
- // Handles cross-browser history management, based on URL fragments. If the
|
|
|
- // browser does not support `onhashchange`, falls back to polling.
|
|
|
- var History = Backbone.History = function() {
|
|
|
- this.handlers = [];
|
|
|
- _.bindAll(this, 'checkUrl');
|
|
|
- };
|
|
|
-
|
|
|
- // Cached regex for cleaning leading hashes and slashes .
|
|
|
- var routeStripper = /^[#\/]/;
|
|
|
-
|
|
|
- // Cached regex for detecting MSIE.
|
|
|
- var isExplorer = /msie [\w.]+/;
|
|
|
-
|
|
|
- // Has the history handling already been started?
|
|
|
- History.started = false;
|
|
|
-
|
|
|
- // Set up all inheritable **Backbone.History** properties and methods.
|
|
|
- _.extend(History.prototype, Events, {
|
|
|
-
|
|
|
- // The default interval to poll for hash changes, if necessary, is
|
|
|
- // twenty times a second.
|
|
|
- interval: 50,
|
|
|
-
|
|
|
- // Gets the true hash value. Cannot use location.hash directly due to bug
|
|
|
- // in Firefox where location.hash will always be decoded.
|
|
|
- getHash: function(windowOverride) {
|
|
|
- var loc = windowOverride ? windowOverride.location : window.location;
|
|
|
- var match = loc.href.match(/#(.*)$/);
|
|
|
- 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 || forcePushState) {
|
|
|
- fragment = window.location.pathname;
|
|
|
- var search = window.location.search;
|
|
|
- if (search) fragment += search;
|
|
|
- } else {
|
|
|
- fragment = this.getHash();
|
|
|
- }
|
|
|
- }
|
|
|
- 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) {
|
|
|
- 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._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;
|
|
|
- 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 = this.getHash().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);
|
|
|
- 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() || this.loadUrl(this.getHash());
|
|
|
- },
|
|
|
-
|
|
|
- // 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 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 frag = (fragment || '').replace(routeStripper, '');
|
|
|
- if (this.fragment == 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.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, 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...
|
|
|
- var View = 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 delegateEventSplitter = /^(\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(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 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 != null) $(el).html(content);
|
|
|
- return el;
|
|
|
- },
|
|
|
-
|
|
|
- // Change the view's element (`this.el` property), including event
|
|
|
- // re-delegation.
|
|
|
- setElement: function(element, delegate) {
|
|
|
- if (this.$el) this.undelegateEvents();
|
|
|
- this.$el = (element instanceof $) ? element : $(element);
|
|
|
- this.el = this.$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('Method "' + events[key] + '" does not exist');
|
|
|
- var match = key.match(delegateEventSplitter);
|
|
|
- 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.
|
|
|
- Model.extend = Collection.extend = Router.extend = 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 options, unless specified.
|
|
|
- options || (options = {});
|
|
|
-
|
|
|
- // 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');
|
|
|
- };
|
|
|
-
|
|
|
- return Backbone;
|
|
|
-}));
|
|
|
-
|
Henry Oswald
