[GSoC 2012][Collaboration] Problems with replacing pDocFunc ?

Hello there,

I've pushed a few new patches but I can't get the code in
TubeContacts::Listen to work.
Assume there is somewhere LIBO_TUBES=slave ./soffice --calc running.

Now when you run LIBO_TUBES=master ./soffice --calc
and start collaboration from menu, it's fine and everything should work.

But I was hoping that also plain ./soffice --calc and pressing Listen
in the File->Collaborate dialog
and then starting Collaboration by pressing Collaborate from the
dialog would work.
It should somehow replace ScDocFuncDirect by ScDocFuncSend.
But the collaboration works only one way. It can accept messages but not send.

Maybe I can't replace pDocFunc just like that when calc is already running ?
Any idea ?

I hope it's possible to understand this e-mail.
And also that you look out for my changes because I may be doing
something else as I should do ;-)

Thanks,
Matus