Re: Tree Data Structure in objc-C?
Re: Tree Data Structure in objc-C?
- Subject: Re: Tree Data Structure in objc-C?
- From: Diederik Hoogenboom <email@hidden>
- Date: Thu, 1 Dec 2005 23:07:43 +0100
Frank,
What helped me as a workaround before I found out about the count
method (which apparently doesn't work in your case) was to reset the
content of the NSTreeController:
id oldContent = [treeController content];
[treeController setContent:nil];
.. undo in Core Data ...
[treeController setContent:oldContent];
[treeController rearrangeObjects];
Regards,
Diederik
fdddddd
On 30-nov-2005, at 15:29, Frank Illenberger wrote:
I am still having problems even though I am using the additional
count key path.
This happens if you implement an indentation method on your tree
structure (outline view). If you then indent a node and use undo
(core data), the same wrong index exception occurs.
I have not been able to find a complete way to work around this
problem yet.
Frank
The bug is not that serious though. You can solve this by
implementing a count method for the count key path of the
NSTreeController's attributes.
Regards,
Diederik
On 28-nov-2005, at 17:13, Hamish Allan wrote:
On Sun, 27 Nov 2005 21:12:28 -0800, Scott Stevenson
<email@hidden> wrote:
Use Core Data and NSTreeController. This is what they're designed
for.
10.4.3 introduced a bad regression bug in NSTreeController. I
wouldn't recommend using it until that's fixed, hopefully soon in
10.4.4!
Best wishes,
Hamish
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