Re: multiple UndoManagers
Re: multiple UndoManagers
- Subject: Re: multiple UndoManagers
- From: Quincey Morris <email@hidden>
- Date: Sat, 5 Jul 2008 09:29:41 -0700
On Jul 5, 2008, at 04:07, Georg Seifert wrote:
My document Object has a Array of independent graphical items
(containing some properties).
Each item should have its own undo/redo based of selection in the
interface. So I select Item_1, modify it, select Item_2 and modify
it, too. Then I want to be able to select item_1 again and undo its
changes.
I know that this is very unusual and may confuse users but it needs
to be this way.
I have a Instance of NSUndoManager in each of my items. But how do I
tell the menu which undoManager is "active" (to display an
appropriate actionName).
Implementing the window delegate method 'windowWillReturnUndoManager:'
to return the correct undo manager should do what you want.
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