Validator<javax.swing.text.Document> vldVazio = Validators.forDocument(true, Validators.REQUIRE_NON_EMPTY_STRING);
pnl.getValidationGroup().add(view.getTxtCenarioDestino(), vldVazio);
pnl.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent e) {
Problem p = pnl.getProblem();
boolean enable = p == null ? true : p.severity() != Severity.FATAL;
view.getBtnDuplicar().setEnabled(enable);
}
});