I dont think its possible. In Java you have something like Select Enclosing Element, which mimicks selecting a word (Alt-Shift-Up). However, FB does not have this feature, AFAIK.
There is an Eclipse enhancement request for this behaviour, which should address this in some future release. Given the fact that its still not implemented in core Eclipse, and the lame speed at which FB develops, I wouldn't expect anything before 2012.