Re: Dynamically validating undo menu item availability (NSUndoManager)
Re: Dynamically validating undo menu item availability (NSUndoManager)
- Subject: Re: Dynamically validating undo menu item availability (NSUndoManager)
- From: Mike Abdullah <email@hidden>
- Date: Fri, 11 Jan 2008 22:46:54 +0000
The -validateMenuItem: method in an appropriate controller should do
wonders.
Mike.
On 11 Jan 2008, at 22:22, Lachlan Cotter wrote:
Hi Cocoabuilders,
I've got a situation where I'm performing operations on the file
system and I want those operations to be undoable. The tricky part
is that because the file system can be changed by anyone at anytime,
I can't necessarily assume that it will be in a state which is
consistent with how I made my change. I have routines which can
check for this and determine whether or not I am able to undo, but I
don't know the best way to work with the UndoManager on this.
How can I proactively get my validation routine called and disable
to undo menu item when it is not available?
Cheers,
Lach
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