Preventing contextual menu showing on specific cell in a view based NSTableView

Question

Is there any way of preventing a contextual menu (and the associated selection \"ring\" around the cell view) being shown when right-clicking on a specific cell

Answer 1

I've found a way to do what I wanted, although looks like a little to involved for something that should be simpler. So I welcome any simpler solution.

It can be done by subclassing NSTableView :

class MyTableView : NSTableView {

    override func menu(for event: NSEvent) -> NSMenu? {
        let clickedPoint = self.convert(event.locationInWindow, from: nil)
        let row = self.row(at: clickedPoint)

        // no contextual menu for the last row
        return row == self.numberOfRows - 1 ? nil : super.menu(for: event)
    }
} 

This example prevents the contextual menu to be shown for the last row, but a more generic solution could be implemented by adding a delegate with a method to return the menu for each cell.