best way to implement "expandable sections" like in Eclipse

what’s the best way to implement “Expandable sections” like it’s traditionally done in Eclipse? (see the attached screenshot).
12179.png

Hi,

As one of the options - the
PortalLayout
might be used. Another add-on that might help is the
Drawer
. Also the
Animator
add-on has something to do with GWT DisclosurePanel AFAIK.

HTH
aleksandr

Thank you! Looks like “Drawer” can do the trick. Not sure about “PortalLayout” because its examples are not very descriptive.