Showing component in new browser tab

Hello, I wish to show component in new browser tab in Vaadin 7 and I found way using
BrowserWindowOpener but I cannot pass component to new UI, becouse in the constructor of
BrowserWindowOpener I have to pass Class of my UI. In Vaadin 6 there was way to put component in Window and then get window url
and show it by invoke open( url), so how to face with that??
Please help