NSOutlineView's levelForItem providing odd results
NSOutlineView's levelForItem providing odd results
- Subject: NSOutlineView's levelForItem providing odd results
- From: Andrew Mellinger <email@hidden>
- Date: Thu, 13 Nov 2003 18:44:46 -0800
Y'all,
I am working with an NSOutlineView and I wanted I put the following
code in one of my data sources:
- (BOOL)outlineView:(NSOutlineView *)anOutlineView isItemExpandable:(id)item
{
if ([anOutlineView levelForItem:item] == 0)
{
return YES;
}
return NO;
}
My problem is that on the first item in my view (at level zero) the
level returned is -1. The item value is *not* nil. The
documentation indicates that -1 will be returned when item is nil.
Under my first item I have two children. When they are asked if they
are Expandable, the first item passed to me also returns -1, and the
second is zero. Also, on both occaisons, the item is not nil. Here
is what I am being told by the levelForItem call...
- Item (-1)
- SubItem (-1)
- SubItem (0)
BTW: I made the above sample code use '== -1' so that I could see
the second level.
Does anyone understand why levelForItem is giving such funky results?
Thanks,
-Andrew
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