BIB-VERSION:: CS-TR-v2.0
          ID:: STAN//CSL-TR-89-380
       ENTRY:: November 08, 1994
ORGANIZATION:: Stanford University, Computer Systems Laboratory
       TITLE:: Unidraw: A Framework for Building Domain-Specific Graphical
               Editors
        TYPE:: Technical Report
      AUTHOR:: Vlissides, John M.
      AUTHOR:: Linton, Mark A.
        DATE:: July 1989
       PAGES:: 16
    ABSTRACT:: Unidraw is a framework for creating object-oriented graphical
               editors in domains such as technical and artistic drawing,
               music composition, and CAD. The Unidraw architecture
               simplifies the construction of these editors by providing
               programming abstractions that are common across domains.
               Unidraw defines four basic abstractions: components
               encapsulate the appearance and semantics of objects in a
               domain, tools support direct manipulation of components,
               commands define operations on components and other objects,
               and external representations define the mapping between
               components and the file format generated by the editor.
               Unidraw also supports multiple views, graphical connectivity
               and confinement, and dataflow between components. This paper
               describes the Unidraw design, implementation issues, and
               three prototype domain-specific editors we have developed
               with Unidraw: a drawing editor, a user interface builder, and
               a schematic capture system. Experience indicates a
               substantial reduction in implementation time compared with
               existing tools.
       NOTES:: [Adminitrivia V1/Prg/19941108]
         END:: STAN//CSL-TR-89-380