Patterns in model-based engineering

In this paper we demonstrate how patterns can act as a driving force for the development of interactive applications. As knowledge re-use is becoming more and more crucial, patterns can be an effective tool to represent knowledge of the HCI domain. Using a model-based development methodology, it is shown how patterns can act as building blocks for the establishment of these models. Starting from outlining the general process of pattern application, we discuss how and which patterns are suitable for several models. In particular we discuss the application and use of patterns for the task, dialog and presentation models. Furthermore, we suggest an interface for patterns using "generic classes" and give concrete examples to corroborate our approach. This allows for modular patterns reuse and plausible parameter exchange with the underlying system. Tool support is based on XML-representations of patterns using a template engine.