backbone-delta.min.js

//! backbone-delta.js 0.3.1, https://github.com/Two-Screen/backbone-delta
//! © 2012 Stéphan Kochen, Angry Bytes. MIT licensed.
(function(){var _;if(typeof require!=="undefined"){_=require("underscore")}else{_=window._}var extend=function(Backbone,options){options||(options={});var Model=Backbone.Model;var ModelProto=Model.prototype;var Collection=Backbone.Collection;var CollectionProto=Collection.prototype;ModelProto.reset=function(attrs,options){var now=this.attributes,unset={},attr;options||(options={});if(!attrs)return this;if(attrs instanceof Model)attrs=attrs.attributes;attrs=_.clone(attrs);for(attr in now){if(!_.has(attrs,attr)){attrs[attr]=void 0;unset[attr]=true}}if(!this.set(attrs,options))return false;for(attr in unset){delete now[attr]}return this};ModelProto.fetchReset=function(options){options=options?_.clone(options):{};if(options.parse===void 0)options.parse=true;var success=options.success;options.success=function(model,resp,options){var parsed=model.parse(resp,options);if(!model.reset(parsed,options))return false;if(success)success(model,resp)};return this.sync("read",this,options)};CollectionProto.delta=function(models,options){var haveId={},matching=[],added=[],removed,model;options||(options={});models=_.isArray(models)?models.slice():[models];for(i=0,length=models.length;i<length;i++){model=models[i]=this._prepareModel(models[i],options);if(!model){throw new Error("Can't add an invalid model to a collection")}haveId[model.id]=true;(this.get(model.id)?matching:added).push(model)}if(matching.length===0){return this.reset(models,options)}removed=this.select(function(model){return!haveId[model.id]});this.remove(removed,options);_.each(matching,function(model){this.get(model).reset(model,options)},this);this.add(added,options);return this};CollectionProto.fetchDelta=function(options){options=options?_.clone(options):{};if(options.parse===void 0)options.parse=true;var success=options.success;options.success=function(collection,resp,options){var parsed=collection.parse(resp,options);collection.delta(parsed,options);if(success)success(collection,resp,options)};return this.sync("read",this,options)};if(!options.noPatch){var origModelFetch=ModelProto.fetch;ModelProto.fetch=function(options){if(options&&options.reset){return this.fetchReset(options)}else{return origModelFetch.call(this,options)}};var origCollectionFetch=CollectionProto.fetch;CollectionProto.fetch=function(options){if(options&&options.delta){return this.fetchDelta(options)}else{return origCollectionFetch.call(this,options)}}}return Backbone};var inherit=function(Backbone,options){var ctor=function(){};ctor.prototype=Backbone;var sub=new ctor;sub.Model=Backbone.Model.extend();sub.Collection=Backbone.Collection.extend({model:sub.Model});return extend(sub,options)};var BBDelta;if(typeof require!=="undefined"){BBDelta=inherit(require("backbone"));module.exports=BBDelta}else{BBDelta=inherit(window.Backbone);window.BBDelta=BBDelta}BBDelta.extend=extend;BBDelta.inherit=inherit})();