I've got a NSPredicateEditor and I'm inheriting from NSPredicateEditorRowTemplate to make a custom template. It implements copyWithZone as the doco seems to imply I should. In Interface builder I have a number of standard row templates, and I've added my custom one at the end by setting the class in the identity pane.
When I load the nib containing the NSPredicateEditor, for some reason it calls copyWithZone on my custom NSPredicateEditorRowTemplate during the nib loading process. Let's call this object passed to copyWithZone as object "A", and I return from copyWithZone as instance "B". So now there are two instances created during the nib loading process. Nothing in the documentation seems to explain why this would happen during nib loading. From my reading of the doco, it should only get called when I do a setObjectValue on the NSPredicateEditor. Anyway, when I call setObjectValue, it does indeed call copyWithZone again with object "A" and creates another object. Let's call this one "C". It then calls setPredicate on object "C" as you'd expect, whereupon I populate the fields of MyCustomPredicateRowTemplate. When the user clicks ok, then I call objectValue on the NSPredicateEditor and it calls predicateWithSubpredicates not on object "C", but on object "B", which is always going to be blank, because it is in fact object "C" which is the one displayed. Thus I can never retrieve values from the row. This phantom and unexplained object "B" that is created during NIB loading suddenly seems to be the one it cares about. I'm not sure where to go next. Has anyone got any advice? _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
