Re: NSOutlineView autosaving of expanded/collapsed state

FROM : Jonathan Dann
DATE : Sat Feb 23 23:44:41 2008

On 23 Feb 2008, at 01:58, Ralph Manns wrote:

> Hi,
>
> is there a solution on Leopard to implement the autosaving of 
> expanded/collapsed state of an NSOutlineView (bound to Core Data via 
> NSTreeController).
> I tried to implement outlineview:persistentObjectForItem; and 
> outlineView:itemForPersistentObject:. But it doesnt't work, because 
> NSTreeNode and NSManagedObject don't encode with NSKeyedArchiver.
> Is there something I am missing, or couldn't state autosaving be 
> done in Leopard without 'hacks' like in Tiger?
>


Hi Ralph,

I ran into this too in a non-Core Data app.  I haven't found a 
solution better than iterating through each row in the outlineView and 
calling -isItemExpanded (I think that's the method) so I can use the 
output from this to re-exapnd the rows when I restart my app (or open 
the document in  the case of a document-based app).

I'd welcome a better solution though!

Jon