I believe this idea is very same with all bullshit proposed here for a couple of month, and should be declained in the same way.
andruk(Idea reviewer)
wrote on the 1 Dec 08 at 22:33
Please try to stay constructive and family-friendly Emacs23.
I think this is a different idea than 6790. 6790 is suggesting that we essentially launch gksudo if the user doesn't have rights to do something they tried to do (drag a picture into /usr/share/icons, for example).
This idea seems to be to offer to copy something instead of moving something (for instance, *moving* an icons from /usr/share/icons isn't allowed, but *copying* /usr/share/icons is allowed).
It seems to me the best way to do this all would to simply have a warning/error dialog with options like "Copy Files", "Authorize", and "Cancel".
In this situation the drag-n-drop action should be copy ('plus' icon, +, beside cursor). The 'move' action in this context (read-only file) is not correct. It is not possible to move files you don't have permission to move. However, if the user had sudo rights, it would be good to allow them some way to move such files, as per: http://brainstorm.ubuntu.com/idea/6790/