From Undo to Multi-User Applications (1993)
| Venue: | In Proceedings of the Vienna Conference on Human-Computer Interaction |
| Citations: | 4 - 1 self |
BibTeX
@INPROCEEDINGS{Berlage93fromundo,
author = {Thomas Berlage and Andreas Genau},
title = {From Undo to Multi-User Applications},
booktitle = {In Proceedings of the Vienna Conference on Human-Computer Interaction},
year = {1993},
pages = {213--224}
}
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Abstract
. The interaction history of a document can be modelled as a tree of command objects. This model does not only support recovery (undo/redo), but is also suitable for cooperation between distributed users working on a common document. Various coupling modes can be supported. Switching between modes is supported by regarding different versions of a document as different branches of the history. Branches can later be merged using a selective redo mechanism. Synchronous cooperation is supported by replicating the document state and exchanging command objects. Optimistic concurrency control can be applied because conflicting actions can later be undone automatically. 1 Introduction In the context of the GINA [14] project at GMD we have developed a model for the generic implementation of mechanisms for multi-user applications for both synchronous and asynchronous cooperation. GINA is an object-oriented application framework to support graphical user interfaces. Our model for the i...
