Design question - Multiple step customer registration process

Hi Everyone,

I have been playing around with GWT / GAE for a few weeks now and
really appreciate the functionalities offered. The web application I
am building is designed around MVC as explained in the various
tutorials.

However for one type of process (customer registration form), we have
to split the process in three steps. Each step should be rendered on a
different screen. That is,

--> Step 1 : The customer fills-in some information then pushes on
the "Next" button

--> Step 2 : The customer fills-in additional information then
pushes on the "Next button

--> Step 3 : The customer provides the final information then
pushes on the "Register" button

These three steps can be easily coded using a different view for each
screen and pushing on the "Next" button generates an event in the
event bus. However, coding this way would mean that if the user pushes
the "back" button on the web browser, the information in the form
would be lost.

Do you have any design pattern to code this kind of multiple step
process in GWT ?

Thanks a lot for your help,

Olivier

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