Automator droplet: ask for files?

I've got a simple app (see screenshot) that removes quarantine attribute from anything dropped onto it. Is there an easy way to make this app ask for files/folders when it's open with double-click (i.e. with nothing dropped onto it)? Thanks!

Mac OS X 10.7.3

[sojourner]

Add an "on run" handler:

on open the_Droppings
   -- process files
end open

on run
   choose from list ...
end run