scroll

def append_data(self, nick, data):
        string = "%s (%s): %s\n" % (time.strftime("%H:%M"),
                  nick, data)
        rows, cols = self.p.getmaxyx()
        lines = int(len(string) / cols) + 1

        self.num_lines += lines
        if self.num_lines >= rows:
            self.p.resize(self.num_lines + IRCTab.INCR_SIZE, cols)
            self.scroll = True
        if self.scroll:
            self.y += lines
        self.buf += string
        self.p.addstr(string)

    def refresh_data(self, rows, cols):
        self.p.refresh(self.y, 0, 1, 0, rows - 3, cols)