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Re: Boggled By Bindings


On Sep 30, 2004, at 1:32 PM, Patrick Machielse wrote:

I want to bind to a new ivar of my NSArrayController subclass, but somehow
the change notifications never get send.

I had the same problem recently. What I found that works is using:
[self addObserver:self forKeyPath:@"arrangedObjects" options:nil context:nil];
in awakeFromNib and
[self removeObserver:self forKeyPath:"];
in dealloc. Then implement:

- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if (keyPath == ")
[self didChangeValueForKey:@"ivar"];
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}

I also had to override automaticallyNotifiesObserversForKey: exactly how you did.

Jacob
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 >Boggled By Bindings (From: Patrick Machielse <email@hidden>)



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