DIWA : A hierarchical, object-oriented model for dialog design
In this paper we present DIWA, a model for hierarchical, object-oriented user-interface design. Major part of the model is an abstract language for the description of the dynamic behaviour of the dialog. From such abstract descriptions an interpreter can automatically generate rapid prototypes. Moreover, from the hierarchical structure of a DIWA dialog, the rigorous separation of tasks, the strictly external control and the minimal data transfer the design of a well-structured, modular, resp. object-oriented, software architecture can be derived in a straigthforward manner. Although the canonical implementation of DIWA dialogs is mostly supported by modern tools like NeWS the structural properties of DIWA are also of substantial advantage in more conventional environments.
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