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A Selective Undo Mechanism for Graphical User Interfaces Based On Command Objects Thomas Barrage GMD (German National Research Center for Computer Science) 53754 Sankt Augustin, Germany Email: Thomas.

How to fill out a selective undo mechanism

How to fill out a selective undo mechanism

1. Create a stack data structure to store the previous states of the application.
2. Initialize the stack with an initial state of the application.
3. Whenever a user performs an action that should be undoable, push the current state onto the stack.
4. When the user wants to undo an action, pop the most recent state from the stack and restore it as the current state.
5. Ensure that any changes made to the application state are properly reflected in the undo stack.
6. Implement a redo mechanism if necessary, by using another stack to store the states that were undone.

Who needs a selective undo mechanism?

1. Developers who want to provide an undo feature for their application.
2. Applications that deal with complex or critical tasks where users may make mistakes and need to revert back to a previous state.
3. Collaborative applications where multiple users are working simultaneously and need the ability to undo their own actions.
4. Graphics or design applications where users frequently make incremental changes and want the flexibility to selectively undo specific changes.
5. Workflow management applications that involve a series of steps and require the ability to backtrack and undo certain steps if needed.

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What is a selective undo mechanism?

A selective undo mechanism is a feature that allows users to undo specific actions without affecting the entire system or document.

Who is required to file a selective undo mechanism?

Users who need to reverse specific changes or actions without undoing all the work done.

How to fill out a selective undo mechanism?

Users can typically access the selective undo feature through a menu or keyboard shortcut, then choose the specific action they want to undo.

What is the purpose of a selective undo mechanism?

The purpose of a selective undo mechanism is to provide users with more control and flexibility when reversing changes.

What information must be reported on a selective undo mechanism?

The selective undo mechanism typically logs the action being undone, the user who initiated the undo, and the time of the undo.