// interval is in seconds
static JLabel lambda0Like jLabelShortCalcedEvery(IF0 calc, double interval) {
  JLabel label = jSimpleLabel();
  if (calc != null) awtEveryAndNow(label, interval, -> {
    pcall {
      O o = calc!;
      S toolTip, text;
      if (o cast WithToolTip) {
        toolTip = o.toolTip();
        text = str(o!);
      } else {
        text = toolTip = str(o);
      }
      setToolTip(label, toolTip);
      label.setText(text);
    }
  });
  ret label;
}

static JLabel lambda0Like jLabelShortCalcedEvery(double interval, IF0 calc) {
  ret jLabelShortCalcedEvery(calc, interval);
}