NSTableView selection & highlights

Question

Hi, I have a NSTableView as a very central part of my Application and want it to integrate more with the rest of it. It has only one column (it's a list) and I draw all Cells (normal NSTextFieldCells) myself.

The first problem is the highlighting. I draw the highlight myself and want to get rid of the blue background. I now fill the whole cell with the original background color to hide the blue background, but this looks bad when dragging the cell around. I tried overriding highlight:withFrame:inView: and highlightColorWithFrame:inView: of NSCell but nothing happened. How can I disable automatic highlighting?

I also want all rows/cells to be deselected when I click somewhere outside my NSTableView. Since the background / highlight of the selected cell turns gray there must be an event for this, but I can't find it. I let my cells expand on a double click and may need to undo this. So getting rid of the gray highlight is not enough.

EDIT: I add a subview to the NSTableView when a cell gets double clicked and then resignFirstResponder of the NSTableView gets called. I tried this:

- (BOOL)resignFirstResponder
{
    if (![[self subviews] containsObject:[[self window] firstResponder]])
    {
     [self deselectAll:self];
     ...
    }

    return YES;
}

Besides that it's not working I would need to implement this method for all objects in the view hierarchy. Is there an other solution to find out when the first responder leaves a certain view hierarchy?

Answer 1

Overloading -highlight:withFrame:inView: should be correct. How did you do the overload? Does an NSLog() statement indicate that your code is running? You should also look at NSTableView's -highlightSelectionInClipRect:, which may be more convenient for this.

In order to do something (such as unselect the current selection) when the user clicks outside the table view, overload -resignFirstResponder on NSTableView.