-- flag to indicate whether script has been invoked as a droplet
set filecount to 0

-- run X11 if not running, then run RasMol (command shell and visualization window)
on run_rasmol(filename)
	do shell script "open /Applications/Utilities/X11.app; export DISPLAY=:0; /usr/X11R6/bin/xterm -e /sw/bin/rasmol " & filename & " &> /dev/null &"
end run_rasmol

-- open subroutine invoked by OS X if we run this as a droplet (i.e. file[s] supplied)
on open (filelist)
	repeat with filename in filelist
		set filecount to 1
		set filename to quoted form of POSIX path of filename
		run_rasmol(filename)
	end repeat
end open

-- if no files supplied (e.g. user double-clicked icon) run RasMol wih no params
if filecount < 1 then
	run_rasmol("")
end if