Extjs 4 And Its New Mvc: Grid: How To Handle Keys?

I'm looking for a way to handle the key in the Grid. I've closely followed the examples here: http://www.sencha.com/learn/architecting-your-app-in-ext-js-4-part-1 http://www.sencha

Solution 1:

Define KeyMap(s) in your launch: function() {...} right after you create the view.