Hidden NSTableView shows vertical scrollbar and responds to gestures

Question

Created Apr ’22

Replies 3

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This must be a bug in NSTableView, but when I hide the view, the NSScroller shows its scrollbar moving through an empty list and still responds to vertical gestures.

Since this is over a view that already handles panning, this causes a giant deadzone where the table was displayed and vertical panning stops on that section of the view because the table view is intercepting it.

All I do is supply an NSTableViewDelegate. The autohide property is set on the scrollers. This should not be responding to gestures either.

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Answer 1

Alecazam OP

Apr ’22

This is the workaround is to set the containing scrollView hidden instead of the tableView itself.

// doesn't work, scrollbar responds to pan gestures and displays empty scroll region // _tableView.hidden = YES;

// fix broken NSTableView, keeps showing scroll and responding to pan // so set scroll to hidden instead of tables NSScrollView* scrollView = [_tableView enclosingScrollView]; scrollView.hidden = YES;

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Answer 2

Alecazam OP

Apr ’22

Actually, that's not a complete fix. The area the table occupies invisibly for the scrollView is still consuming pan events. There's just no visual of the slider moving, but that whole area is a panning dead zone now.

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Answer 3

Alecazam OP

Apr ’22

I had a second NSTableView in the storyboard that I needed to remove. The fix above is still needed to have the tableView hide itself.

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