Human-Computer Interaction: Ergonomics and User Interfaces - Vol. 1

By Hans-Jörg Bullinger; Jürgen Ziegler | Go to book overview

HandsOn: Dynamic Interface
Presentations by Example

Pablo Castells E.T.S.I. Informática Universidad Aut6noma de Madrid pablo.castells@ii.uam.es

Pedro Szekely
Information Sciences Institute University of Southern California
szekely@isi.edu


1
Introduction

Visual tools for GUI development have greatly contributed to alleviate the effort involved in interface construction ( NeXT 1990). Visual builders save time, require very little knowledge from the developer, and help improve the quality of displays. However, the tools we know today are confined to the construction of the static portion of presentations and provide very little or no support for the dynamic aspects of interface displays. The main reason for this is the lack of abstraction of the visual languages these tools provide, which on the one hand favors their ease of use, but on the other makes it very hard to specify procedural information.

Our research aims at extending the expressive power of existing visual tools for the construction of a significant range of dynamic displays while retaining the ease of use of direct manipulation. We do so by a) using the model-based approach ( Wiecha et al. 1990, Szekely et al. 1993, Szekely et al. 1996) for the internal representation of the constructed displays, with models that support dynamic presentation functionalities, and b) developing an extended visual language that incorporates abstractions and Programming By Example (PBE) techniques ( Cypher 1993) for the interactive specification of dynamic presentations by manipulating interface presentation objects in a visual tool. Tighly integrated in both the visual language and the presentation model,

____________________
This work was partially supported by the Plan Nacional de Investigación, Spain, Project Number TIC96-0723-CO2-02

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