Please describe the problem:
Originally reported at https://bugs.edge.launchpad.net/hundredpapercuts/+bug/388445:

When a file with a very big name is created (example, a flv file from youtube downloaded by wget), and then trying to delete it, Nautilus shows a Dialog with the name of the file to be moved to trash and a "Cancel" | "Ok" bottom.

Now, the problem is that, with a very big file name, the dialog goes off screen. This makes that, for pressing the action bottoms in the dialog, you have to drag it several times until you reach the right end.


Example:
really_big_name_for_a_file_that_is_not_properly_managed_by_the_move_to_trash_option_of_nautilus_and_its_dialog_goes_offscreen_so_the_dialog_must_be_moved_to_reach_the_action_bottoms

It should be displayed in the Dialog as:
really_big_name_for_a_file_that(...)he_dialog_must_be_moved_to_reach_the_action_bottoms

Steps to reproduce:
1. Have a file with a very long name and without whitespaces
   Example:
really_big_name_for_a_file_that_is_not_properly_managed_by_the_move_to_trash_option_of_nautilus_and_its_dialog_goes_offscreen_so_the_dialog_must_be_moved_to_reach_the_action_bottoms

2. Now, for example, select it and press SHIFT + DEL



Actual results:
The dialog goes off screen.

Expected results:
The behavior must be that, if the filename is too long and the dialog goes off screen, then the string should be cut to a reasonable length and put a (...) in the middle.

Example:
really_big_name_for_a_file_that(...)he_dialog_must_be_moved_to_reach_the_action_bottoms

Does this happen every time?
Yes

Other information:
Screenshot of the problem: http://launchpadlibrarian.net/28076399/oversized-delete-dialog.png