Allow to import theme items from the edit panel

[KoBeWi]

Describe the project you are working on

A game with lots of UI

Describe the problem or limitation you are having in your project

I've been making a custom theme and came across some icons from default theme that are too small. I wanted to save them as separate file and make bigger, but it's not easy to do.

The icon is right here, but when I click the + button it disappears:

Which means that I have to go to the import menu and import it manually.

Describe the feature / enhancement and how it helps to overcome the problem or limitation

Allow to fetch the default value instead of clearing it.

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

Maybe add another button besides the + icon that will quick-import the value, so you can edit it.

If this enhancement will not be used often, can it be worked around with a few lines of script?

Not really, it would require editor hacking.

Is there a reason why this should be core and not an add-on in the asset library?

It's about theme editor usability.

[Zireael07]

Fetching default value instead of clearing would also be useful for editor font settings, I imagine.

[YuriSizov]

There is a bit of inconsistency there, I admit. Primitive types are copied, but not resources. I wasn't sure which kind of behavior would be preferable so I went with what was working before in the old theme editor.

When @YeldhamDev was adding UndoRedo, he at first made it so that resources are also copied when you override, but that led to some issues, so I think he reverted it to fix them. So there is that. But I'm not against the idea.

[YeldhamDev]

If I remember correctly, the main reason that I reverted that was because it wasn't how the theme editor behaved originally. I wanted to add the undo/redo system without changing how the editor worked.