def __enter__(self):
# init curses and it's wrapper
self.screen = curses.initscr()
self.display = Display(self.screen, self.encoding)
# create keyhandler
self.keyhandler = key.KeyHandler(self.screen)
# create view
self.view = SelectorView(percol=self)
# create command
self.command_candidate = SelectorCommand(self.model_candidate,
self.view)
self.command_action = SelectorCommand(self.model_action, self.view)
# suppress SIGINT termination
signal.signal(signal.SIGINT, lambda signum, frame: None)
# handle special keys like <f1>, <down>, ...
self.screen.keypad(True)
curses.raw()
curses.noecho()
curses.cbreak()
return self
