Patent
1991-12-09
1993-08-03
Herndon, Heather R.
G06F 1520
Patent
active
052336875
ABSTRACT:
Workspaces provided by an object-based user interface appear to share windows and other display objects. Each workspace's data structure includes, for each window in that workspace, a linking data structure called a placement which links to the display system object which provides that window, which may be a display system object in a preexisting window system. The placement also contains display characteristics of the window when displayed in that workspace, such as position and size. Therefore, a display system object can be linked to several workspaces by a placement in each of the workspaces' data structures, and the window it provides to each of those workspaces can have unique display characteristics. The display system object can operate continuously despite switching between one workspace and another, and the windows it provides in successive workspaces can share features so that they appear to the user to be the same window or versions of the same window. As a result, the workspaces appear to be sharing a window. Workspaces can also appear to share a window if each workspace's data structure includes data linking to another workspace with a placement to the shared window. A special workspace is automatically included in each of the other workspaces, so that windows in that workspace go with the user into any other workspace. The user can invoke a switch between workspaces by selecting a display object called a door, and a back door to the previous workspace is created automatically so that the user is not trapped in a workspace.
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Card Stuart K.
Henderson, Jr. D. Austin
Maxwell, III John T.
Herndon Heather R.
Xerox Corporation
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