How to set the active Step in a process Train using JSF

Question

I have a process train that I am pointing to a list of steps, I want to be able to set the current step, but cannot find the property to set.
Does anyone know how to accomplish this? This process train is for readonly purposes only, no navigation needed.
Thanks
Kelly

Answer 1

Right, I think I've been able to do what you're trying to do.
I've defined a subclass of ProcessMenuModel, which simply has a currentViewId property and a constructor with an extra argument for it:
public class SettableProcessMenuModel
  extends ProcessMenuModel
  private String _currentViewId = null;
  public SettableProcessMenuModel(Object instance, String viewIdProperty, Object maxPathKey, String currentViewId) throws IntrospectionException
    super(instance, viewIdProperty, maxPathKey);
    _currentViewId = currentViewId;
  public void setCurrentViewId(String currentViewId)
    this._currentViewId = currentViewId;
  public String getCurrentViewId()
    return _currentViewId;
}Then in the model adapter I use this class instead of MenuModel, plus a currentViewId property:
public class TrainModelAdapter implements Serializable {
    private String _propertyName = null;
    private Object _instance = null;
    protected transient MenuModel _model = null;
    private Object _maxPathKey = null;
    private String _currentViewId = null;
    public MenuModel getModel() throws IntrospectionException {
        if (_model == null)
          _model = new SettableProcessMenuModel(getInstance(),  // SettableProcessMenuModel instead of ProcessMenuModel
                                        getViewIdProperty(),
                                        getMaxPathKey(),
                                        getCurrentViewId()); // Extra argument
        return _model;
    public void setCurrentViewId(String currentViewId)
        _currentViewId = currentViewId;
        _model = null;
    public String getCurrentViewId()
      return _currentViewId;
...Then when you want to set the current step, you set the currentViewId on the TrainModelAdapter to the viewId you need.
This basically makes the value you pass in override the currentViewId value in the menu model.
I hope you are able to use this in your implementation.