static <A> A selectFromList2(Collection<A> items, VF1<A> r) {
  JList list = jlist(allToString(items));
  onDoubleClickOrEnter(list, r {
    A a = collectionEntryAtIndex(items, selectedIndex(list));
    if (a != null) callF(r, a);
  });
  showCenterFrame(300, 600, list);
}