How to hide properties depending on a different property value

In OpenXava, I have a class having a "certificateType" property, with a set of fixed values from an enumeration.

In the same class, there is another property that have to be displayed if the certificateType has a specific value, hidden in other cases.

Can you suggest the best approach?

Thanks

You have to add an @OnChange action to your certificateType property. Then in the code of your action you can hide or show any property using getView().setHidden("theProperty", true).

In your entity write your property:

enum CertificateType { A, B, C }
@OnChange(OnChangeCertificateTypeAction.class)
CertificateType certificateType;

Then write an action like this:

public class OnChangeCertificateTypeAction extends OnChangePropertyBaseAction { 
 
    public void execute() throws Exception {
        CerificateType newType = (CerificateType) getNewValue(); 
        if (newType == null) return;
        getView().setHidden("propertyNotForA", newType == CerificateType.A);
    }
 
}

For more information about how to use @OnChange look at the reference documentation, here: https://openxava.org/OpenXavaDoc/docs/view_en.html#View-Property%20customization-Property%20value%20change%20event