[platform-dev] Validation Question

[Luke Shannon]

I have added a Validation component to my TopComponent.

In the Post Creation Code I have this:

final ValidationGroup group = validationPanel1.getValidationGroup();


group.add(jTextField_baseOutputFileName, Validators.REQUIRE_NON_EMPTY_STRING);

jTextField_baseOutputFileName.getDocument().addDocumentListener(new
DocumentListener() {
@Override
public void insertUpdate(DocumentEvent e) {
checkValidation();
}
@Override
public void removeUpdate(DocumentEvent e) {
checkValidation();
}
@Override
public void changedUpdate(DocumentEvent e) {
checkValidation();
}
private void checkValidation() {
Problem validateAll = group.validateAll();
if (validateAll.isFatal()) {
jButton_Save_Details.setEnabled(false);
} else {
jButton_Save_Details.setEnabled(true);
}
}
});

The code that gets generated looks like this:

validationPanel1 = new org.netbeans.validation.api.ui.ValidationPanel();
final ValidationGroup group = validationPanel1.getValidationGroup();

group.add(jTextField_baseOutputFileName,
Validators.REQUIRE_NON_EMPTY_STRING);

jTextField_baseOutputFileName.getDocument().addDocumentListener(new
DocumentListener() {
@Override
public void insertUpdate(DocumentEvent e) {
checkValidation();
}
@Override
public void removeUpdate(DocumentEvent e) {
checkValidation();
}
@Override
public void changedUpdate(DocumentEvent e) {
checkValidation();
}
private void checkValidation() {
Problem validateAll = group.validateAll();
if (validateAll.isFatal()) {
jButton_Save_Details.setEnabled(false);
} else {
jButton_Save_Details.setEnabled(true);
}
}
});

All this seems OK, except I get a null pointer on this line when I try
and run the app. The offending line is:

group.add(jTextField_baseOutputFileName, Validators.REQUIRE_NON_EMPTY_STRING);

Why would the group be null? The only method it looked like I could set was:

validationPanel1.setInnerComponent(this) which didn't help.

Any tips?

Thanks,

Luke

[skyhook]

Hi Luke,

I am working with validation api...When i look to your code, i think i am missing...you have to set the "name" of item which you added to group. Something like:

JTextfield txtField = new JTextField();
txtField.setName("name'')

group.add(txtField, StringValidator).....

I can send you my example of class which is working.

Marek