I would like to know if Im allowed to create a viewport, (apart from the one generated by SA) and, separately I have other views, for example, toolbars with buttons, formpanels with buttons, a gridpanel with a toolbar with buttons inside a tabpanel, all these in a formpanel...and then! I link them to my viewport? I make them store and retrieve data from the server separately first, and then put everything together?
For example, I create one toolbar separately with my buttons, then each button should load a form panel inside the center region of the viewport.
For this I make use of a Controller that knows which button I want to do something with based on its id that I declare in my View (toolbar buttons)? My form panels have fields and so on, this is bound to a Store? that has an associated Model? and a Proxy so that I may communicate with my backend and perform CRUD operations using the api config? (am I right?)