Method and system for automatically generating, tracking and calling off a message

Abstract

Methods, systems, and computer program products that automatically generate and track undo information so that the developer of a user interface object need not be responsible for generating and tracking undo information. Change notifications for changes to an object within a visual user interface designer are processed. Data representing an initial state of the object prior to the changes and data representing a subsequent state of the object after the changes is persisted. From the persisted data, an undo unit is prepared for undoing the changes to the object. The undo unit may comprise a transaction of multiple changes made to the object. Each undo unit may identify corresponding routines for undoing and redoing the actions included within the undo unit. An undo unit may be stored untilan undo / redo notification is received, and then used to undo / redo the changes represented by the undo unit.

Description

technical field [0001] The present invention relates to undo infrastructure, and more particularly to a method, system and computer program product for automatically generating and tracking undo information so that developers of user interface objects are not responsible for generating and tracking undo information. Background technique [0002] Undo is a familiar feature of many applications. For example, spreadsheets and word processors often allow undoing data entry, such as adding new data, deleting existing data, cut and copy operations, and data formatting. Redo is the counterpart of undo, and in many cases is conceptually equivalent to undo to undo. In some implementations, repeat allows the last operation to be repeated. In this application, undo is used as a general term that includes both undo and redo. [0003] A visual user interface designer is software that allows a developer to visually represent a user interface and automatically generate at least some cor...

AI Technical Summary

Problems solved by technology

Traditional undo implementations also fail to provide undo support for third-party objects that do not implement undo as shown in Table II

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