A user interface control that has different logic components for processing different role logic depending on a role that is played by the user interface control. The user interface control may also have a general function component that performs general functions that may be common across multiple user interface controls. Also, a protocol for use in communicating between two user interface controls to establish a communications link. A first user interface control requests information from a second user interface control, which then obtains the requested information. The second user interface control then provides the requested information to the first user interface control, and then awaits the validation of the requested information.