def _is_all_selected(self):
    state = self.value()
    if (self.default_filter_value and (state == self.show_all_param_value)):
        return True
    elif ((not self.default_filter_value) and (not state)):
        return True
    return False
def _is_all_selected(self):
    state = self.value()
    if (self.default_filter_value and (state == self.show_all_param_value)):
        return True
    elif ((not self.default_filter_value) and (not state)):
        return True
    return False