GWT Designer produced code

I'm trying to开发者_Go百科 understand GWT and its associated Designer plugin better. Using one of the more recent versions of GWT Designer and GWT 2.* in your application, can you give me a sense for

1) how much additional (UI) code you needed to develop by hand (outside GWT Designer), perhaps as a rough percentage? Was this code generally doing the model interface and controller part of MVC?

2) how well were you able to go between "design and code view" -- i.e. keep using GWT Designer for your GUI layout after you supplemented with hand-written code?

1) It does a lot like it generates html code, and ui:fields and binds the ui:field with a variable in java class. You have to write to your handlers. It does the model interface and controller done by hands.

2) To me it took a lot of time to switch views, to me the designer's performance was poor and I try to finish nt work inside the designer before switching to code view.