[Fresco-devel] input::filter

At the moment, Input::Filter is entirely unimplemented.
Is there any documentation describing how this is supposed to work?

PositionalFocus.cc has an add_filter function which seems to imply that 
you can filter yourself out of the control graph. Input::Filter is a 
CORBA object with one function, "handle" that takes an Event and returns 
a boolean.

Is the idea that we're supposed to attach a Filter to a certain point in 
the controller graph? Won't we need a factory for these things? (Should 
we make a new one?)

Most importantly, is this already documented anywhere? I couldn't find 
any mention on the mailing lists of old, nor in the "Further Reading" 
section, not that I grepped them all or anything.

Thanks,
Nick Lewycky