def _loop(controller, screen):
patched_screen = _Screen(screen)
buf = ""
while True:
controller.render(patched_screen)
ch = screen.getch()
if ch > 255:
if ch == curses.KEY_BACKSPACE:
buf = to_binary(BS)
elif ch == curses.KEY_ENTER:
buf = to_binary(CR)
else:
buf = ""
continue
else:
buf += chr(ch)
try:
unicode_character = to_unicode(buf, fail=True)
except UnicodeDecodeError:
# We are dealing with an incomplete multi-byte character.
pass
else:
buf = ""
result = controller.process_input(unicode_character)
if result:
return result
def _get_output(self):
return to_binary(self._get_selected_item())