Ext.data.Config = Ext.extend(Object, { config_id: undefined, write_fn: undefined, _id: undefined, constructor: function(config) { this.config_id= config.config_id; this.write_fn= config.write_fn; this._id= config._id; }, set: function(data) { this._id= data._id; }, to_s: function(indent) { return this.config_id+": "+Ext.encode(this); }, as_data: function(data) { data.id= this.config_id; data._id= this._id; data[Ext.data.SyncModel.OID]= data[Ext.data.SyncModel.OID] || this.config_id; return data; }, writeAndCallback: function(changed,callback,scope) { if (changed) { this.write(function(){ if (callback) { callback.call(scope,this); } },this); } else { if (callback) { callback.call(scope,this); } } }, write: function(callback,scope) { if (this.write_fn) { this.write_fn(this,function(){ if (callback) { callback.call(scope,this); } },this); } else { if (callback) { callback.call(scope,this); } } } });