Re: Focus ring changed
Re: Focus ring changed
- Subject: Re: Focus ring changed
- From: Óscar Morales Vivó <email@hidden>
- Date: Mon, 15 Nov 2004 16:48:58 -0500
From what I see you'd need to override either the window's
makeFirstResponder or the view's acceptFirstResponder. Unless I'm
missing something obvious, there seems to be no delegate method for
those, unfortunately (I guess they decided against it to avoid too much
overhead).
You also probably can get away with capturing the
NSControlTextDidEndEditingNotification of one of the NSTableView
objects (or its corresponding delegate method) even though you'll
probably be getting many spurious ones.
I'd fathom that there's probably a far better way of doing it with
bindings but you'll have to research that one yourself.
Hope that helps:
Óscar Morales Vivó.
On Nov 15, 2004, at 15:29 , Eric Long wrote:
Hi,
Most of my posts here tend to be met with the sound of crickets... But
here
goes:
I expected to find some kind of delegate method like
"firstResponderChanged"
so I could know when a user changes the focus in my window from one
table to
another, but I don't see a callback anywhere for this.
When one particular table is the focus, I want to disable a button,
and when
the other table has the focus I want to disable it. The Cocoa
mechanisms
underneath know when the focus changes and place the focus ring around
the
tables appropriately, but I want to be called when the ring moves.
What is the proper Cocoa way to be notified when the focus changes?
Thanks,
Eric
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