def __enter__(self):
# init curses and it'screen wrapper
self.screen = curses.initscr()
self.display = Display(self.screen, self.encoding)
# keyhandler
self.keyhandler = KeyHandler(self.screen)
# create view
self.view = SelectorView(percol=self)
self.command_candidate = SelectorCommand(self.model_candidate,
self.view)
signal.signal(signal.SIGINT, lambda signum, frame: None)
# handle special keys like <f1>, <down>, ...
self.screen.keypad(True)
curses.raw()
curses.noecho()
curses.cbreak()
# Leave newline mode. Make percol distinguish between "C-m" and "C-j".
curses.nonl()
return self
