Reuse of toolbar

I am trying to create a webapplication from the start with Vaadin.
I need some 200 pages and a navigation panel in the top.
My idea is to use a MVP pattern independently for every 200 pages, and have some panel in the top for selecting the page.

I vould like to let every page inherit from a class that inserts the navigation panel in the top, or insert the navigaion panel in the top in the “UI” class.
I am usin the “Navigator” class for selecting the different pages.

Could someone tell me if i should try to inherit the navigation panel or insert it in the UI class, or I simply needs to insert the panel in all pages?