取消选择NSTableView时，点击表格外的某处

Question

我有一个NSTableView放置在NSView的顶部。我想在NSView上单击鼠标指针时取消选择NSTableView。如何实现这一目标？

Answer 1

我知道这是旧的，但一个选项是继承NSTableView的并覆盖其鼠标按下：

- (void)mouseDown:(NSEvent *)event { 

    [super mouseDown:event]; 

    NSPoint point = [self convertPoint:[event locationInWindow] fromView:nil]; 
    NSInteger row = [self rowAtPoint:point]; 

    if (row == -1) { // We didn't click any row 

     [self deselectAll:nil]; 
    } 
} 

斯威夫特3版本：

override open func mouseDown(with event: NSEvent) { 
    super.mouseDown(with: event) 

    let point = convert(event.locationInWindow, from: nil) 
    let rowIndex = row(at: point) 

    if rowIndex < 0 { // We didn't click any row 
     deselectAll(nil) 
    } 
}