system error custom UI


I’m using vaadin 7. I’m trying to change the system error red UI. For example the session got expired, the red box error screen popups and it looks not so nice. I want to change the red error box to a better looking error screen/window. Anyone knows how? Would be a great help.

Thanks in advance!


Have a look at
this page
. You could for example disable the system message for session expired and then set the sessionexpiredurl to an external html/jsp/… site which gets displayed instead of the message.