Prevent browser form submission when Wicket AjaxFormValidatingBehaviour validation fails

Question

I have a Page with a Wizard component. The user can navigate the panels of the wizard by using the next and previous buttons which I have performing full (non-ajax) form submissions so that the app is back-button friendly.

When the next button is clicked, I would like to attempt ajax form validation (if javascript is enabled). I tried doing:

nextButton.add( new AjaxFormValidatingBehavior( form, "onsubmit") );

to add such validation. The behaviour works - however, when validation errors occur the browser still submits the entire form.

What is the Wicket way to prevent the browser from submitting the form in this case?

Answer 1

Override the onError() method on either the form or the AjaxFormValidatingBehavior. If you do it on the behavior, I am not sure if that will prevent the form from submitting or not.

new AjaxFormValidatingBehavior( form, "onsubmit") {
   public void onSubmit() {}
   public void onError() {}
}