Re: How to de-register value observers
Re: How to de-register value observers
- Subject: Re: How to de-register value observers
- From: Tron Thomas <email@hidden>
- Date: Mon, 03 Sep 2007 13:53:18 -0700
Nick Zitzmann wrote:
On Sep 3, 2007, at 12:29 PM, Tron Thomas wrote:
removeObserver:forKeyPath: is the equivalent for
addObserver:forKeyPath:options:context, which is call by the object
that wants to observe the value.
Since the observing object registers itself, it seems that the same
object should de-register itself as well. I'm not sure how every
registered object is supposed to know that the window controller is
deallocating itself so they can de-register themselves.
The first thing I would try is using NSNotificationCenter...
Nick Zitzmann
<http://www.chronosnet.com/>
I'm not exactly sure how you are suggesting that NSNotificationCenter
would be used.
One idea I have every object that registers for a binding the controller
would also register for a notification. Before the controller
deallocates, it would post a notification informing all the observers
they should de-register.
I don't know if it is possible that the controller would attempt to
deallocate before all the registered object has responded to the
registered notification.
Perhaps there is a different way you are suggesting that
NSNotificationCenter would be used.
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