Popup Presenter with Parent Presenter

[rcbeuker]

I'm using the Popup Presenter to handle the windows in a desktop designed application:

http://dev.arcbees.com/gwtp/core/presenters/popups.html

This works but the implementation works with/from the Root presenter placing the windows over all other desktop parts (header, task bar etc.). I think most applications have a working area, in my situation this would be the desktop.

There should be a parent presenter as event parameter which acts as a container for the pop-up windows. In my situation this would be the desktop-presenter.
Is it possible to add this parent presenter to the library?