[crsl]

I used to work on similar project around 4 years ago, It was a Java Swing application that received all the data about the layout from the backend. The system was around 14 years or so, they implemented themselves most of the things like IoC container, custom XML markup for constructing UI, custom Swing elements.

It worked surprisingly well. The thing that impressed me the most was the amount of documentation which even included tutorials on how to make new UI elements, Screens, etc.