Method and system for enabling undo across object model modifications
US7418460B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2004 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Feb 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F40/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system provides reversibility of an operation performed by a user of an application program and associated with a modification to an object model of the application program, such as a spreadsheet program or other office productivity application program. The top item of a first undo stack associated with the application program is determined, saved, and copied to a second stack functioning as a replicated undo stack. According to one aspect of the invention, such steps are performed prior to calling an object model method that clears the first undo stack. The top item of the second replicated undo stack is placed back onto the first undo stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.