close collaboration tube after the activity window is destroyed

[tomeu]

So activities can do collaboration cleanup when the activity window is closed.

[tomeu]

This is needed so Write can migrate the session from the initiator to other participant. Please comment and tell if you see any negative consequence from this.

May be worth backporting to 0.84.

[mstone]

If Write is involuntarily killed, e.g. due to segfault or OOM, then this code will never be called, yes? If that happens, will the Telepathy CM still be an incorrect state as it apparently is now? (Or have I completely misunderstood the purpose of this patch?)

[uwog]

Replying to mstone:

If Write is involuntarily killed, e.g. due to segfault or OOM, then this code will never be called, yes? If that happens, will the Telepathy CM still be an incorrect state as it apparently is now? (Or have I completely misunderstood the purpose of this patch?)

Yes, it will be just like it is now. We will make AbiCollab work with improper shutdown somewhere in the future, but for now this is a good improvement to have.

[tomeu]

 http://git.sugarlabs.org/projects/sugar-toolkit/repos/mainline/commits/df89c1bf