Transition Listener

Easy Wizard defines a listener interface, which allows to listen for step change event, and to prohibit step change if needed.

 public interface IWizardListener {

   public int STEP_REGULAR = 1;
   public int STEP_LAST = 2;

   boolean onTransition(int event);
 }

Tansition listener is usually implented in Wizard Manager code, that is in Struts or JSF plugin.