如何在NSTableCellView中单击NSTextView时在NSTableView中选择一行？

Question

我有一个基于视图的单列NSTableView.在我的NSTableCellView子类中,我有一个可选的NSTextView,但不可编辑.

当用户直接单击NSTableCellView时,该行会正确突出显示.但是当用户单击NSTableCellView内的NSTextView时,该行不会突出显示.

如何将NSTextView上的单击传递给NSTableCellView以使该行突出显示？

类层次结构如下所示:NSScrollView> NSTableView> NSTableColumn> NSTableCellView> NSTextView

Answer 1

这就是我最终做的事情.我创建了NSTextView的子类并覆盖了mouseDown:如下所示......

- (void)mouseDown:(NSEvent *)theEvent
{
    // Notify delegate that this text view was clicked and then
    // handled the click natively as well.
    [[self myTextViewDelegate] didClickMyTextView:self];
    [super mouseDown:theEvent];
}

我正在重用NSTextView的标准委托......

- (id<MyTextViewDelegate>)myTextViewDelegate
{
    // See the following for info on formal protocols:
    // stackoverflow.com/questions/4635845/how-to-add-a-method-to-an-existing-protocol-in-cocoa
    if ([self.delegate conformsToProtocol:@protocol(MyTextViewDelegate)]) {
        return (id<MyTextViewDelegate>)self.delegate;
    }
    return nil;
}

在标题中......

@protocol MyTextViewDelegate <NSTextViewDelegate>
- (void)didClickMyTextView:(id)sender;
@end

在委托中,我实现了didClickMyTextView:来选择行.

- (void)didClickMyTextView:(id)sender
{
    // User clicked a text view. Select its underlying row.
    [self.tableView selectRowIndexes:[NSIndexSet indexSetWithIndex:[self.tableView rowForView:sender]] byExtendingSelection:NO];
}