ListGrid where each row is a form and form contains lists of data

I would like to have a list grid that has a form for every row. form can be collapsed initially, but i want the form to be visible (expanded) when user double clicks on a row. I am using the latest Smart Client 10.* with my own java server. Can someone please provide JS example, even a few lines of how to make this happen please ?

Hence my question number two. When i create record object in java for my list grid, i need to have them contain list of other objects inside that should appear as drop down in the form. How can I accomplish this?

Presently in java my record is generated with

record.add("name", operation.getName());

however, if operation has a list of descriptions inside of it, how can i place all of them into 1 record ?

for(String description: operation.getDescriptions())
record.add("????", description);

I can't figure out how to make that happen so that on front end ListGrid understands what belong where and renders it correctly.

Much appreciated.