def keypress(self, size, key):
        (maxcol, maxrow) = size
        if self.height_type == PACK:
            return self._original_widget.keypress((maxcol,), key)

        top, bottom = self.filler_values((maxcol,maxrow), True)
        return self._original_widget.keypress((maxcol,maxrow-top-bottom), key)
Pass keypress to self.original_widget.
dataset/ETHPy150Open AnyMesh/anyMesh-Python/example/urwid/decoration.py/Filler.keypress