Window event loop

def start(self):
        """
        Window event loop
        """
        self.window = _curses.initscr()
        _curses.savetty()
        _curses.start_color()
        _curses.use_default_colors()
        self.window.leaveok(1)
        _curses.raw()
        self.window.keypad(1)
        _curses.noecho()
        _curses.cbreak()
        _curses.nonl()
        _curses.curs_set(0)
        if self.blocking:
            self.window.nodelay(0)
        else:
            self.window.nodelay(1)
        self.running = True
        while self.running:
            self.cycle()
            if self.friendly and not self.blocking:
                time.sleep(self.delay)
        self.stop()