public void removeValidationListener(ValidationListener listener) {
formModel.getValidationResults().removeValidationListener(listener);
}
public File getSelectedFile() {
String filePath = (String) formModel.getValueModel(formProperty).getValue();
return (filePath == null) ? null : new File(filePath);
}
public void addValidationListener(ValidationListener listener) {
formModel.getValidationResults().addValidationListener(listener);
}