For example current page is www.google.com. But I typed a different website address in address bar and clicked. This site has fully GWT code.
But I like to back to t
You can implement the HistoryListener interface: your class's method onHistoryChanged will be called (with a String token) on every click to the back and forward buttons. You can then interact with the History class, which has e.g. a back() static method to "go back". However, I'm not entirely sure if it goes back all the way to before GWT started (but it's sure worth trying;-).