filtering NSTreeController/NSOutlineView

FROM : Ken Victor
DATE : Tue Jun 20 02:05:21 2006

i've got an NSOutlineView bound via a subclass of NSTreeController to
an entity in my core data model.

by overriding setContent (in my subclass of NSTreeController) i can
successfully filter the outline, but only at the top level of the
tree.

without resorting to writing my own outline/tree controller or
resorting to using outline view data source approach, has anyone been
able to successfully filter an NSOutlineView/NSTreeController?

(the "conventional" approach from the archives seems to be to roll your own).

thanx,
ken