In this paper we present a novel approach for designing the interface of rich internet applications. Our approach uses ract Data Views (ADV) design model allowing expressing in a high level way the structure and behaviors of the user interface. Additionally, by using advanced techniques for separation of concerns it allows to create complex interfaces as oblivious compositions of simple interface atoms. Using a simple illustrative example we present the rationale of our approach, its core stages and how it is integrated into the Object Oriented Hypermedia Design Method (OOHDM). Some implementation issues are finally analyzed.