On Sep 15, 2020, at 3:05 PM, Alex Zavatone via groups.io <email@example.com> wrote:
Can you set the background to needsRefresh?
I assume you mean needsDisplay. In my tableViewSelectionDidChange: delegate method, if instead of setting needsDisplay on the table, I say
^(__kindof NSTableRowView * _Nonnull rowView, NSInteger row)
rowView.needsDisplay = YES;
then it does show my highlights. Seems a little baroque, but it works, so thanks!
On Sep 15, 2020, at 4:54 PM, James Walker <firstname.lastname@example.org> wrote:
I have a view-based NSTableView in a scroll view. I want to customized the way that selection highlighting is drawn. So, I set up a controller as a delegate of the table, and in the delegate method tableView:rowViewForRow: I provide an instance of a subclass of NSTableRowView, call it NameRowView. NameRowView overrides one method:
- (void) drawBackgroundInRect: (NSRect) dirtyRect
NSLog(@"drawBackgroundInRect %@", self);
NSRectFill( self.bounds );
The table delegate also overrides tableViewSelectionDidChange: to call setNeedsDisplay on the table. Now, if I click or use arrow keys, tableViewSelectionDidChange: does get called, but my drawBackgroundInRect: is not called.
However, if I make the window containing the table change its “main” status, then some drawBackgroundInRect: calls finally happen.
And here’s the really weird part: If I create a WindowRef for the window containing the table, like
then from then on I see the selection highlight changes immediately.