static JList jlist(final L<S> l) {
  ret (JList) swing(func {
    new JList list;
    final WeakReference<JList> ref = weakRef(list);
    listPopupMenuItem(list, "Copy text to clipboard", r {
      copyTextToClipboardIfNotNull(selectedItem(ref!))
    });
    fillListWithStrings(list, l);
    ret list;
  });
}

static JList jlist(S... l) {
  ret jlist(asList(l));
}