code: def _footer_start_thread(self, text, time):
          
          footerwid = urwid.AttrMap(urwid.Text(text), 'footer')
          self.top.footer = footerwid
          load_thread = Thread(target=self._loading_thread, args=(time,))
          load_thread.daemon = True
          load_thread.start()
docs: Display given text in the footer. Clears after <time> seconds