On Jul 2, 2009, at 10:34, Sean McBride wrote:
I'm trying to find somewhere to undo what was done in my NSDocument
subclass' initializer. Specifically, to start/stop KVO
observation. It
seemed like 'close' would be a good place.
'close' isn't a good place, because it isn't necessarily called. If
you look at the Leopard Developer Release Notes:
http://developer.apple.com/releasenotes/Cocoa/AppKit.html
in the section entitled "Advice for Overriders of Methods that Follow
the delegate:didSomethingSelector:contextInfo: Pattern", you'll find a
nice little code snippet that happens to show you where to place code
that should execute just before a document closes:
if (shouldClose) {
// Here we can do all sorts of things with this document that's
about to be closed.
}
Does that help?
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