abstract sclass DynBigInputAndList<A> extends DynObjectTable<A> {
  S text;
  switchable int fontSize = 20;
  transient Trigger trigger_makeList = new(r makeList);

  start {
    new Dyn_FieldWatcher(this, 'text, trigger_makeList);
  }
  
  visual withComputing(trigger_makeList,
    jvsplit(setFontSize(fontSize, dm_textArea('text)), wrapListComponent(super)));
    
  // override me
  JComponent wrapListComponent(JComponent component) { ret component; }
      
  void makeList() q {
    if (!trigger_makeList.check()) ret;
    makeList_impl();
  }
  
  abstract void makeList_impl();
}

Began life as a copy of #1022773