Comments on: Using NSTreeController

By: Jonathan Dann

Jonathan Dann — Sat, 05 Jul 2008 19:28:34 +0000

@Ralph

Sorry I’m afraid I don’t have anything prepared. The example app on katidev uses an NSOutlineView, so I’d just create an NSTreeController in that NIB and connect it up as I’ve described in this article.

Jon

By: Jonathan Dann

Jonathan Dann — Sat, 05 Jul 2008 19:27:56 +0000

@ Ralph,

Jon

By: Ralph

Ralph — Sat, 05 Jul 2008 18:35:19 +0000

Hey Jonathan,

do you have a sample Application which combines your ESNode and XSController?

By: Jakob Dam Jensen

Jakob Dam Jensen — Sat, 05 Jul 2008 15:15:46 +0000

Thank you so much for this Jonathan - I’ve been trying to get something to work for the last two days, and somehow it all makes sense to me now - thanks to you.

Take care…

By: Jonathan Dann

Jonathan Dann — Sat, 07 Jun 2008 16:30:07 +0000

Not at all, I wrote this to help people!

By: Michael

Michael — Fri, 06 Jun 2008 17:50:48 +0000

Ah, indeed, now everything makes sense. Thanks for your patience, that explains a lot.

By: Jonathan Dann

Jonathan Dann — Thu, 05 Jun 2008 23:20:10 +0000

@”File’sOwner.treeController.arrangedObjects.nodeName” will return an NSArray of node names. The same happens when you have an NSArray and you call [myarray valueForKey:@"key"] the returned array contains the values for those keys.

By: Jonathan Dann

Jonathan Dann — Wed, 04 Jun 2008 20:57:45 +0000

I’m afraid I’m not following, sorry. If you’re on leopard I can iChat screen share and we can try and sort it out, either that or you can email me your XCode project?

If not then can you tell me what you’re trying to to and I might be able to help.

By: Michael

Michael — Wed, 04 Jun 2008 20:52:43 +0000

> I see your problem, can you not append arrangedObjects to the keyPath? The controller key is just a convenient shortcut anyway.

Hmm… but if you use “File’sOwner.treeController.arrangedObjects” than you have no way of controlling what’s the object list and what’s the actual value. In other words, the real path is: “File’sOwner.treeController.arrangedObjects.nodeName” or rather: “”File’sOwner.treeController.arrangedObjects(each).nodeName”. But without the Controller Key you have no way of describing it - what’s the object list (array) and what’s the path to the individual object property to be used ie. in a given cell.

By: Jonathan Dann

Jonathan Dann — Wed, 04 Jun 2008 20:29:40 +0000

Yeah sorry I forgot to put that in, also set the Leaf key path to @”isLeaf”. I’ll update the post.

I see your problem, can you not append arrangedObjects to the keyPath? The controller key is just a convenient shortcut anyway.