Thanks for your help, Graham, that now makes more sense. I am actually using
'isLeaf' on item to determine if it's a parent or not...
Rainer
On Jul 5, 2010, at 17:11 , Graham Cox wrote:
>
> On 06/07/2010, at 4:56 AM, Rainer Standke wrote:
>
>> setEnabled works on single cells, and as expected: the outline row's button
>> is grayed out. Oddly, setTransparent affects all cells in the column, i.e.
>> the button appears in no row, not even the ones that have no children.
>>
>> That's confusingly inconsistent, to me. What should I do to make invisible
>> only the checkboxes in the row that have a twirly triangle?
>
>
> There is only one cell, reused for each row in the column as needed.
>
> Therefore you not only need to disable the cell/make it transparent, but set
> the opposite state for all other rows, otherwise it just remains in the last
> state you set.
>
> If you just want to hide it for 'parent' items, this method can also refer to
> the other delegate method - (BOOL)outlineView:(NSOutlineView *)outlineView
> isGroupItem:(id)item. Presumably your controller/data model can determine
> which items are parent items since the outline view is told this information
> by you:
>
>
> - (void)outlineView:(NSOutlineView *)outlineView willDisplayCell:(id)cell
> forTableColumn:(NSTableColumn *)tableColumn item:(id)item
> {
> if ( [[tableColumn identifier] isEqualToString:@"toReconnect"] )
> {
> [cell setEnabled:![self outlineView:outlineView
> isGroupItem:item]];
> [cell setTransparent:[self outlineView:outlineView
> isGroupItem:item]];
> }
> }
>
> --Graham
>
>
>
>
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