Opening a gap in NSTableView during drag and drop

Question

I\'ve got a simple, single-column, view-based NSTableView with items in it that can be dragged to reorder them. During drag and drop, I\'d like to make it so that a gap for the

Answer 1

As of Mac OS X 10.9 (Mavericks), there's a much easier solution to animating drag & drop in a NSTableView:

[aTableView setDraggingDestinationFeedbackStyle:NSTableViewDraggingDestinationFeedbackStyleGap];

The table view will automatically insert gaps with animation as a row is dragged which is much nicer than the old blue line insertion point method.