This is not supported out of the box.
It's not feature complete, but can provide you a status bar with a virtual terminal, so that it's completely transparent from the shell / applications.
You can launch it by using the "tmux" command inside the jline demo.
You could start from that and simplify if you want, the key point is the virtual terminal handling.
I've just spotted that the colors are wrong with the recent 3.6.0 release, so I'll try to fix those, but you can experiment with 3.5.x instead.
Cheers,
Guillaume