sclass DynBigNumber extends DynModule {
  S description;
  Number value;
  int fontSize = 40;
  
  transient bool triggerOnChange;
  transient SimpleLiveValue<S> lvText = new(S);
  transient SimpleLiveValue<S> lvDesc = new(S);
  
  void setValue(S field, O value) {
    if (eq(get(this, field), value)) ret;
    set(this, field, value);
    if (triggerOnChange)
      dm_generalUpdate();
  }
  
  // PUBLIC API
  
  void setValue(long i) {
    setValue('value, i);
    makeTexts();
  }
  
  void setDescription(S desc) {
    setValue('description, desc);
    makeTexts();
  }
  
  // END PUBLIC API
  
  void makeTexts() {
    lvText.set(value == null ? "-" : str(value));
    lvDesc.set(description);
  }
  
  void start { makeTexts(); }

  JComponent visualize() {
    ret jLiveValueSection(lvDesc, centerLabel(makeBold(setFontSize(fontSize, jLiveValueLabel(lvText)))));
  }
}