Clear single item from undo manager

[mihir-khandekar]

Hello @artf ,

use case: We have a custom set of buttons to allow someone to undo/redo the last change. Changes like selecting a specific type of element from being selected are not expected to be tracked. Although, these components are marked as data-gjs-selectable="false" the editor still fires the component selected event and the undo manager adds this selection to its stack.

I would like to make a request where in we can remove a single tracked change from the undo manager using a method like UndoManager.clear(changeId).

Please let me know if this can be done or if there are any work arounds.

[artf]

the editor still fires the component selected event and the undo manager adds this selection to its stack.

I think you should investigate that first. When you click on the non-selectable component it tries to find the closest selectable one, so I guess you're just selecting the parent component.

[mihir-khandekar]

Hi, thanks for the update. Is there a way to prevent/disable this behavior?

When you click on the non-selectable component it tries to find the closest selectable one.

[artf]

No, otherwise you won't be able to select components behind the unselectable one.

[mihir-khandekar]

Okay, sounds reasonable.

Is there any way to modify the undo manager stack? I would like to clear the items in the stack conditionally. Any way to do this?

[artf]

Not really but I'm planning to improve the UndoManager module API soon. Subscribe to this #3639

[mihir-khandekar]

Great. Please let me know if I can help in any way. Happy to contribute :)