Re: fourth report: cheese integration

[Cosimo Cecchi <cosimoc gnome org>]

On Mon, 2008-06-23 at 10:34 +0200, Felix Kaser wrote:

> The problem is: When cheese gets called via dbus, it enters a specific 
> method (remote method). In this method cheese should wait until the user 
> has taken a picture, then return the path via dbus. But what about the 
> waiting? Well the client blocks, but this is not a problem in my 
> opinion. The thing is, how to make the "waiting" of the cheese-method? 
> Active waiting (while (return_path == null) wait(1); ) sounds really 
> ugly! But what else? Make a new thread? Work with signals? Change the 
> whole work flow?
> 
> Can somebody help me with that? I'm sure one of you has had similar 
> problems and has solved them in a nice way :)

I am having my first experiences with DBus too these days ;)
It seems that an object on the bus can have signals too, other than
methods. So a very simple way to solve your issue could be splitting the
picture acquisition process into two steps: first you call the remote
method on the cheese manager, then, when the picture is ready, a signal
is emitted from the manager itself, with the path as argument.

Hope that I understood your problem correctly ;)

Cheers!

-- 
Cosimo