GXT 2's CheckBoxGroup.getValue returned a list of checkboxes - is that what you want? The implementation is pretty simple, and can probably be ported directly. However, it usually makes more sense to map each checkbox to a object or a string, and ask some group for a list of those instead. We haven't found a consistent, easy-to-use way to build such a thing, and haven't seen a lot of demand, so haven't build this into the library directly.