Clara - Vaadin Add-on Directory
Declarative UI and Bindings for VaadinClara allows you to use a declarative XML-based syntax for defining Vaadin 7 user interfaces. In addition to defining the component hierarchy, you can also bind data sources and event handers declaratively using annotations.
See the quickstart link on the right for instructions on how to use this add-on or the online demo for quickly trying out the XML syntax.