static JLabel jlabel(fS text) {
  ret swing(func -> JLabel {
    final JLabel l = new JLabel(text) {
      @Override
      public void setText(S text) {
        super.setText(text);
        setToolTipText(text);
      }
    };
    componentPopupMenu(l, voidfunc(JPopupMenu menu) {
      addMenuItem(menu, "Copy text to clipboard", r {
        copyTextToClipboard(l.getText());
      });
    });
    ret l;
  });
}

static JLabel jlabel() {
  ret jlabel(" ");
}