A new framework for separating user interfaces from application programs

We propose an object-oriented user interface framework that allows 1) easy development of user interfaces, 2) separation of user interfaces from application programs, and 3) simultaneous and coordinated usage of several user interfaces of one program. Daemons keep these user interfaces consistent with the status of the program, while hiding the user interfaces from the program. Mapping objects, which are parts of user interfaces, are introduced to map complicated status of application programs to visual presentation. Consistency among subwindows of one window is also kept by daemons of the window. Again, each subwindow is hidden from the other subwindows.