Ok, A further update:
After doing some reading on this list, and some additional reading Apple's site, I learned that Core Animation is being used. Just for fun, I in my NSCollectionViewItem's NSView, I called "setWantsLayers:YES". Suddenly my items started showing up! (Well, they are showing up if you like garbage all over the NSView.) In IB, I enabled the Core Animation Layer for my NSView. Then I enabled a Core Animation layer for my NSCollectionView. Things are almost working! However: - Not all of the imagery is properly re-drawn. - Why is my first NSCollectionView working just fine, yet my second one needs all of these Animation layers enabled? Progress at least! My hunch is this: Two separate NSCollectionViews needs some Core Animation tweaking to make work. bob. On Oct 10, 2011, at 7:43 PM, Robert Monaghan wrote: > Well, > > After some troubleshooting, it looks like the NSView that is attached to the > NSCollectionViewItem object is missing its superview. > Does any know how this might be possible?? > > I can see my Subclassed NSView being created. AwakeFromNib works, as does > hitTest. > The drawRect does get called, but the call to superview fails, because it is > set to nil. > > Just for laughs, I created another NSCollectionView, with NSArrayController, > etc, and manually add objects. This works, with the NSViews displaying > properly. > Is there a way to force NSCollectionView to reload/re-display the NSViews > with a proper superview set? > > bob. > > On Oct 10, 2011, at 4:49 PM, Robert Monaghan wrote: > >> Hi Everyone, >> >> I can't seem to get an NSCollectionView to render an of the >> NSCollectionViewItems' NSViews. >> >> I have an NSCollectionView that is bound to an NSArrayController's >> arrangedObjects. >> The NSCollectionViewItem is set up as a template, and also has its Outlet >> attached to an NSView. >> For fun I added a text label as well as an image from the Media Library, as >> a placeholder image on the NSView. >> (It helps to have something to look at!) >> >> I don't have anything bound to the NSView at all. >> I haven't subclassed anything either. These are the standard objects within >> IB. >> >> My App inserts objects into an array using the NSArrayController as needed. >> However, as this happens, *nothing* is rendered at all. As a test, I have >> subclassed the NSView, and checked the drawRect method. >> >> Nothing. >> >> I enabled selectable in my NSCollectionView and checked for a hitTest method >> in my view. I can blindly click inside the NSCollectionView to the >> approximate location of the view, and see an hitTest response. Strange! So I >> know that my NSView is being recognized by my NSCollectionView, as hitTest >> is being called. But drawRect isn't happening. >> >> Can anyone hazard a guess at what I am doing wrong? >> >> Some notes.. >> This interface is to drive a network device. As such, the UI doesn't >> actually populate with anything until it is discovered over the network. >> As a matter of fact, the array that the NSArrayController uses doesn't even >> exit during the "awakeFromNib" process. The actual array is created as soon >> as the device comes online, and is attached using a binding. Perhaps I need >> to send some sort of message to the NSCollectionView after the new array is >> bound? >> >> Thanks! >> >> bob. >> >> _______________________________________________ >> >> 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/bob%40gluetools.com >> >> This email sent to b...@gluetools.com > _______________________________________________ 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 arch...@mail-archive.com
