Re: [Ekiga-devel-list] [RFC] Plugins/Order of initialization in Ekiga

[Julien Puydt <jpuydt free fr>]

Jan Schampera a écrit :
> Folks,
>
> as discussed before on IRC, Ekiga's current initialization procedure is
> either in the wrong logic, wrong order or too inflexible to introduce
> the new plugin system:
>
> main()
> +---- PProcess::PreInitialise ()
> +---- g_thread_init ()
> +---- gdk_threads_init ()
> +---- gm_conf_init ()
> +---- [Gettext init]
> +---- gnome_program_init ()
> +---- [IF BONOBO] bonobo_component_init ()
> +---- PTrace::Initialise ()
> +---- GnomeMeeting::Process ()->BuildGUI ()
>   +---- gnomemeeting_addressbook_init ()
>   +---- gnomemeeting_stock_icons_init ()
>   +---- [Create the windows]
>   +---- [IF DBUS] gnomemeeting_dbus_component_new ();
>   +---- gm_statusicon_new ()
> +---- GnomeMeeting::Process ()->DetectInterfaces ()
> +---- GnomeMeeting::Process ()->Init ()
> +---- GnomeMeeting::Process ()->DetectCodecs ()
> +---- gnomemeeting_conf_init ()
> +---- [UI init]
> +---- gtk_main ()
>
>
> Where to hook plugin initialization?
>
> IMHO it needs
> - a working gmconf
> - MAYBE a pre-initialized but not built UI
> to make all other components available as plugins/with plugin addons.
>
> In the current (above) order my first hook would be right after the
> PTrace initializer.

There are basically two things in my base code :
- a GmService object, which must probably be available through a 
process-wide getter ;
- a GmPluginManager, which needs the GmService object when initialized 
but nothing more at this point.

The problem is when we ask the GmPluginManager to load plugins, because 
*they* can need more.

For example, at least one of the existing plugins needs gmconf.

Future examples will probably be the gstreamer audio&video plugins (and 
perhaps a gstreamer codecs plugin). Which means that devices and codecs 
detections should happen *after* plugin load!

Notice too that in the future, I expect the dbus component to be loaded 
as plugin ; probably bonobo should be too, if it's possible...

Snark