On Jul 18, 2014, at 3:12 PM, Ken Thomases <[email protected]> wrote:
> Is there a reason you didn't just directly enumerate the objects in the
> collection? Constructing an index set for all of the items, enumerating
> that, and then looking up the items by the index seems cumbersome.
>
> [[self sourceListContents]
> enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:^(id obj,
> NSUInteger idx, BOOL *stop) {
> [outlineView expandItem:obj expandChildren:YES];
> }];
Another lapse of attention on my part. I had been writing a similar method to
enumerate selected rows, where using NSIndexSet is appropriate. I just grabbed
the same code and stuck it in here. It worked, of course, but you're right that
it was cumbersome. In addition, I don't need the NSEnumerationReverse option
when enumerating items in the datasource instead of rows. Here's my final code:
- (IBAction)expandAllRows:(id)sender {
AWRSourceListOutlineView *outlineView = [self sourceListOutlineView];
NSArray *topLevelItems = [self sourceListContents];
[topLevelItems enumerateObjectsUsingBlock:^(id obj, NSUInteger itemIndex,
BOOL *stop) {
[outlineView expandItem:obj expandChildren:YES];
}];
}
Thanks again. I don't know what I would do without you!
--
Bill Cheeseman - [email protected]
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