the kde vim part was a valiant attempt to do just that. sadly it didn't work out, and its intended replacement, yzis, didn't either.

for a good overview at the history of vim integration, check out http://www.freehackers.org/VimIntegration

the only really good one i've seen is jvi [http://jvi.sourceforge.net/], which is a straight-up port of vim to java as a netbeans plugin. emacs's evil mode [https://gitorious.org/evil/pages/Home] is getting there too.