Years ago I faced to the same challenge. It was very hard work to
finished it.My way was as follow:- I created a custom dialog means using
own html, css and javascript and of course slighty. The drop down lists,
for me there were three depending lists, are type of AEM
componentThe code wich controls the
behaviour is written in client side javascript -currently still in
jquery.- On serverside there is a model class that does provide only the
content for the lists. He is represented by created pag...