sclass JTargetAndActualSlider extends MetaWithChangeListeners is Swingable {
  new TargetAndActual<Double> data;
  settable bool sliderEnabled = true;
  settable double min, max = 100;
  
  transient JColorBar bar;
  transient JSlider slider;
  
  double value() { ret data.value(); }

  cachedVisualize {
    bar = swing(-> new JColorBar().max(max));
    data.varActual().onChangeAndNow(-> bar.setValue(value()));
    slider = jLiveValueSlider_double_bothWays(data.varTarget());
    varSliderEnabled().onChangeAndNow(-> setEnabled(slider, sliderEnabled));
    ret vstackWithSpacing(bar, slider);
  }
}