Ui.undo: Undoing op.destroy() Not Cooking Select or Parameter Chops

General TouchDesigner Discussion
1

Hi all,
I’ve implemented an undo operation into an app for when the user deletes items. The item that’s deleted is actually a base component holding some custom parameters. I’m referencing these comps like this - "base_Cue*/null_CueInfo’ in a select chop, and like this ‘base_Cue*’ for a parameter chop.

Everything works fine as long as there is at least one item still being referenced by the chops.

Here are the cues present and happy -

image
image738×775 67 KB

They get removed as expected-

image
image768×801 19.9 KB

Performed undo on the deletion of all items and chops remain empty -

image
image765×798 44.3 KB

Anything I can do to jump start them aside from force cooking each?

Thanks!

2

I’ve reported this to dev.

In the meantime, you can use the ui.undo.addCallback system to add a callback into the undo chain. In that callback you can force cook. Is that what you’re already doing?

3

Hi Ivan,
That is what I’m doing now and it works fine.
Thanks!
-Tim

4

Cool. Glad to see people using this powerful system. Keep the feedback coming!

5

If anyone is interested in this topic and hasn’t gotten into using it yet, I just put together this tutorial on using the undo class.

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