I have some entries in uitableview
which are droppable and some which are not.
The question is for consistent user experience should I disallow
dragging them altogether or should I just filter them out during the drop?
The issue is that dropSessionDidUpdate
is invoked often
and I saw cases when I released the drop before green indicator has appeared
and drop did not happen. So it does not seem like I could iterate
over all the drop items in the array deciding if I should return drop proposal
operation .forbidden
if ALL the items are unsuitable for droppage.