static JButton tableDependentButton_extraCondition(final JTable table, S text, O action, final F0<Bool> extraCondition) {
  final JButton b = jbutton(text, action);
  onTableSelectionChangedAndNow(table, r {
    b.setEnabled(table.getSelectedRow() >= 0 && isTrue(callF(extraCondition)))
  });
  ret b;
}