Shale sits on top of JSF so it will run with the Sun RI and also runs on
MyFaces.

You can find more on the Shale view controller here:
http://struts.apache.org/shale/features.html#view

After reading this description, many people still don’t understand how to
configure a ViewController outside of extending the abstract class or
implementing the interface.

The key to the view controller is that it assumes a one to one mapping between
the JSF viewId and the managed bean. For example, if you name your JSP
"pages/mypage.jsp", your view controller (special managed bean) must be
registered in the faces config with an managed bean name of "pages$mypage.jsp".

You of course are not limited to a single managed bean but only one view
controller per JSF view.

The use case examples are a good place to start. The only problem is that each
use case focuses on a specific feature. We don't have an example that pulls it
all together yet.

We can talk more on the Struts mailing list.

Gary