MVP is a good pattern for decoupling UI logic from the code that actually constructs the UI. This add-on makes it easy to adopt the MVP pattern in Vaadin applications and also provides some functionality for navigating between views, e.g. a breadcrumb bar. Documentation and unit tests will be added later. This add-on requires the Stuff4Vaadin add-on. Please note: This add-on is not going to be ported to Vaadin 7.