On 2011-08-10, at 5:11 PM, Jens Alfke wrote: > > On Aug 9, 2011, at 8:43 PM, Izak van Langevelde wrote: > >> Now I want to allow drag and drop from one document to another, and my first >> guess was to write the row data to the pasteboard. >> What puzzles me, is how to delete the row data from the source data, in case >> of a move. That is, my acceptDrop inserts the row data into the destination >> data source, but the indexes of the source rows are not available at this >> point. > > And also consider that the destination of the drag could be a different app, > in which case you don’t get an -acceptDrop: call at all. > > Instead, to handle the source end of a move (or delete, i.e. drag to Trash) > you need to implement the NSDraggingSource protocol’s > -draggedImage:endedAt:operation: method. If the operation was a move or > delete, you should delete the dragged items.
I considered it, but it seems to have been available since Lion, and am looking for something which works on older systems. I am a little surprised that there does not seem to be an elegant solution for inter-document drag-and-drop moves within the same application, other than keeping track of the row indexes in the source, putting the row numbers on the pasteboard and notifying the source of a successful move to the destination. I had expected to put the row data on the pasteboard to facilitate cross-document drag-and-drop, but as I need the row indexes anyway, it does not really make sense to put anything other than row indexes on the pasteboard. --- Grinnikend door het leven... _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
