What I still don't understand is, what would I put in place of the Controller? Events are raised by the user, these are all fired off and I want to handle them

What I still don't understand is, what would I put in place of the Controller? Events are raised by the user, these are all fired off and I want to handle them in the same place in the same way. I certainly don't want event handling code all over the application just because this means I can then have noun-only classes?