User Interface Description Language
language for expressing complex user interfaces. The aim is to develop a
universal client which will display UIDL pages with the same ease with
which HTML pages are displayed.
The main features of a UIDL page are the ability to create complex user
interfaces (using Swing based widgets) and to communicate asynchronously with
server based objects (using the JSON-RPC protocol).
Whilst this may sound similar to AJAX, the implementation is much cleaner thanks
to the ability to natively instantiate complex UI components within the browser
and the ability to transparently present server based objects via their
The motivation for this project comes from the realisation that the (HTML) browser
model was developed for document presentation rather than as a GUI for complex
applications. Most web application developers resort to hacks and are required
Web applications are generally less user friendly than a comparable client-server
application of the 1980ís and the code is much more difficult to maintain
(although web applications are easier to deploy).
On the other hand, the browser (or universal client) model is vastly superior in
that it makes it easy to deploy application upgrades in a central location
without needing to worry about upgrading clients. The proposal is therefore to
extend the browser model to include support for a rich library of UI components
and to asynchronously and transparently update client data structures from
objects located on the server.
Contact: Dominic Cioccarelli
Try it Out!
All downloads are available from Google code.