GWT +一些基本工具给项目。

Features Listener-observer objects, with basic UI widgets. ``` ItemManager myString = new ItemManager("Frank"); SmartLabel name = new SmartLabel(); myString.registerListener(name); // label updates automatically when myString.setItem(String) called. ``` Send Channel messages with objects. ``` // From server Employee e = ...; CreateEmployeeMessage message = new CreateEmployeeMessage(e); messageClients(listOfClients, message); ``` Management of object fields (booleans, floats, ints, strings). ``` // From client SetIntegerMessage ssm = new SetIntegerMessage(employeeType, emplId, propIndex, propValue); clientRPC.sendMessage(ssm); ``` ``` // On server employee.setInt(propIndex, propValue); ``` Basic app structure. Data: BaseObject Client UI: AppDisplay