list all undos

[jansindl3r]

Hi, please, is there a possibility of getting all current font's undos listed? Or is there a way to how to add observer to afont's undo? So I can use it in an extension that knows about every recorded undo? Thanks!

[jansindl3r]

@gferreira thanks a lot! I will look into it :)

[gferreira]

hello @jansindl3r,

the latest beta includes the new addedUndoItem observer, which returns a dict of the glyph data before each change.

here’s an example:

from mojo.events import addObserver

class MyUndoItemObserver:

    def __init__(self):
        addObserver(self, "addedUndoItemCallback", "addedUndoItem")

    def addedUndoItemCallback(self, notification):
        glyph = notification['glyph']
        glyphData = notification['data']
        print(f'{glyph.name} changed' )
        print(glyphData)
        print()

MyUndoItemObserver()

please give it a try… thanks!

[frederik]

From a nsUndoManager there is no way to get a list of undo's and redo's. There is no api for it...

The addedUndoItem will help to make such a list of changes..

[jansindl3r]

Isn't there some way to crack there from RoboFont 3.3?

I tried something like this. It seems that it is not linked, because it tells that it has no undo on the stack. I am doing something wrong, or is there just no way how to get to that stack? Thanks

import AppKit
g = CurrentGlyph()
manager = AppKit.NSApp().currentDocument().getUndoManagerForGlyph_(g)
print(manager._undoStack().count())

[jansindl3r]

Hi!
Thanks a lot! Looking forward :)

[frederik]

There is no support from the macOS NSUndoManager to have access to a stack of undo items.

Ive added an addedUndoItem notification where an extension could collect all the undo items and step over or save every version... lots of possibilities!!!

[gferreira]

hello @jansindl3r,

a list of undos by title is not available, but an observer for undo actions is coming soon … stay tuned!