Seth,
This doesn't answer your question about notifications, but I had to save
both selection and expansion states separately from the regular autosave
stuff as well. What I did was ignore the notification and use a couple of
methods, one of which is:
- (NSArray*) getExpandedItemsUUIDList
{
NSMutableArray* theList = [NSMutableArray array];
int x = 0;
int numRows = [self numberOfRows];
for (x = 0; x < numRows; x++)
{
id bookmark = [self itemAtRow:x];
if ([self isItemExpanded:bookmark])
[theList addObject:[bookmark uuid]];
}
return theList;
}
(Apologies for the formatting; I hope it's readable.) 'self' here is a
subclass of NSOutlineView. The method returns an array of UUIDs that I can
use find my objects again to re-expand them ([self expandItem]). I run this
just before closing my window, but you could trigger it at other places
(even that notification).
The one minor gotcha I discovered is this: If you start with a
fully-collapsed list and try to re-expand, you must expand parents before
children or it won't work. If you re-expand in the same order as the array
above, it will work.
DSC
> I'm trying to save and restore the collapsed/expanded states of an
> outline view that is part of my document's window (and thus I can't
> use the provided autosave stuff) so I need to get the item object
> from the notifications, like:
>
> - (void)outlineViewItemDidExpand:(NSNotification *)notification
>
> But how are you supposed to actually get the item? I used NSLog with
> [notification userInfo] and it prints out that it has a single item
> with {NSObject = blah blah blah}, but the key NSObject doesn't work
> (even though that is clearly shown when printing [[notification
> userInfo] allKeys] and even [[[notification userInfo] allValues]
> objectAtIndex:0] doesn't work because it causes an exception. I've
> Googled, looked on CocoaDev, asked in #macdev on freenode, and looked
> in the list archives on Cocoa Builder. I'm being driven mad!
>
> This should be ridiculously simple, but nothing I try works and I'm
> feeling ridiculously silly!
>
>
>
> --
> Seth Willits
_________________________________________________________________________
Dan S. Camper Borrowed Time, Inc.
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