Re: When should one call unbind:? (in a GC application)

• Subject: Re: When should one call unbind:? (in a GC application)
• From: Ricky Sharp <email@hidden>
• Date: Wed, 31 Oct 2007 15:15:07 -0500
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On Oct 31, 2007, at 2:03 PM, Sean McBride wrote:

For a long time, Apple recommended calling -unbind in a view's - dealloc
method. With the introduction of garbage collection, this had to
change. The new Apple recommendation became:

- (void)viewWillMoveToSuperview:(NSView*)newSuperview
{
	[super viewWillMoveToSuperview:newSuperview];
	if (newSuperview == nil)
	{
		[self unbind:...];
	}
}

as documented here:
<http://homepage.mac.com/mmalc/CocoaExamples/controllers.html#unbinding >

Apple highly discourages doing work in -finalize, so this seems like a
good idea.

However, if you use 10.5's new NSView API:
- (BOOL)enterFullScreenMode:(NSScreen*)screen
   withOptions:(NSDictionary*)options

then the unbinding is triggered, because viewWillMoveToSuperview: is
called with nil.  Obviously, we don't want everything unbound, just
because we are fullscreen.

Now I don't know where to call -unbind.  Doing it in -finalize seems
dangerous, what with Apple discouraging it so much.

This is <rdar://5497135> BTW.

___________________________________________________________
Ricky A. Sharp         mailto:email@hidden
Instant Interactive(tm)   http://www.instantinteractive.com

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