On 4 Aug 2008, at 14:04, Gerriet M. Denkmann wrote:
On 3 Aug 2008, at 16:53, Jonathan Dann wrote:On 3 Aug 2008, at 04:35, Gerriet M. Denkmann wrote:Ah, sorry about that, I didn't realise. What you can do is have a look atOn 3 Aug 2008, at 05:51, Jonathan Dann wrote:On 1 Aug 2008, at 14:04, Gerriet M. Denkmann wrote:But all disclosure triangels are now closed. Is there some way to reopen them to the previous state? I have the strong feeling that I will have to handle this myself. Ok. So be it.It's a common problem. Can I point you here: http://www.cocoabuilder.com/archive/message/cocoa/2008/2/23/199705Thank you very much for this link. You provide there a very clever solution, but, as you aptly put in your posting: "It uses NSTreeNode and -representedObject, so is 10.5 only." But alas!, I need Tiger 10.4.11. (And am reluctant to use private methods which you hint at in your posting).http://www.wilshipley.com/blog/2006/04/pimp-my-code-part-10-whining-about.htmlWil gives a few category methods like -objectAtIndexPath: You can (maybe) get the index path the _NSArrayControllerTreeNode and then get your real object, in which you have an isExpanded flag.I had a look at this. It seems that to get the real object one has to recursively search the whole tree.
You're right, it's a shame these methods aren't available out of the box.
In my case it seems to be much simpler just to forget about NSTreeController and use the good old DataSource. This is not a question about premature optimization (the trees in my case are quite small) but just a disgust about the silly design of the 10.4 NSTreeController.Thanks for your help! Kind regards, Gerriet.
Not a problem, sometimes it is easier to use a datasource rather than battle for ages to patch up other code. Do what works for you.
Glad to be of help. Jonathan http://espresso-served-here.com
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