Re: UndoManager setActionNames
Re: UndoManager setActionNames
- Subject: Re: UndoManager setActionNames
- From: Jean-Daniel via Cocoa-dev <email@hidden>
- Date: Sun, 5 Jul 2020 10:27:55 +0200
> Le 5 juil. 2020 à 09:07, Arved von Brasch via Cocoa-dev
> <email@hidden> a écrit :
>
> Hi list,
>
> Where’s the best place to intercept undo/redo actions to edit the action name
> (’setActionName()’) for the UndoManager in a CoreData application? In
> particular, when a particular entity’s attribute's change. Obviously, I want
> to do this so that when the user edits something, the menu name is more
> descriptive than just “Undo”/“Redo”.
>
> Easiest, in terms of implementation, seems to be in the NSManagedObject
> subclass by means of an observer on the attribute. However, conceptually, it
> would make more sense to handle it in the NSArrayController or, maybe the
> NSTableView or other NSView object where the attribute is edited directly.
>
> Just wondering where others have settled for best practice.
Sometime, a user action may update many model fields in a single event loop (ie
in a single undo action).
If you try to set the action in the model, you won’t be able to reflect what
the user was doing.
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