def exit_window(self):
if self.automaton.nodes:
self.quit_dialog = QuitDialog(self.canvas,
text="Would you like to save before exiting?",
buttons=["Yes", "No", "Cancel"],
actions=[self.save_automaton, sys.exit, sys.exit],
default=0,
cancel=self.save_automaton,
title="Quit dialog")
self.quit_dialog.go()
else:
sys.exit(0)
