GSignals for bearers addition/removal

[Enrico Mioso]

I mean - when I needed to do something like this in the past, what I did was something like:
sig_id = g_signal_connect(modem, "g-properties-changed", G_CALLBACK(my_mm_showchanges_on_modem_signal), NULL);

And then my handler was something like:
static void my_mm_showchanges_on_modem_signal(MMModem *modem, GVariant *changed_props, GStrv inv_props, gpointer user_data) {
 	...
}

Is this the proper way to go? and what might I do now? Fetch the list from my MMModem or can I use the GVariant data somehow?

Thanks a lot!

On Mon, 4 Oct 2021, Aleksander Morgado wrote:

> Date: Mon, 4 Oct 2021 12:31:14
> From: Aleksander Morgado <aleksander at aleksander.es>
> To: Enrico Mioso <mrkiko.rs at gmail.com>
> Cc: "ModemManager (development)" <modemmanager-devel at lists.freedesktop.org>
> Subject: Re: GSignals for bearers addition/removal
> 
> Hey!
>
>> I see there is no documented GSignals for bearers addition/removal.
>> I understand I probably should get the bearers list and connect object-{added,removed} GSignals to it. But I would like to see some code snippets, to know the proper prototypes for the handlers.
>>
>
> We have the "Bearers" property in the Modem interface:
> https://www.freedesktop.org/software/ModemManager/doc/latest/ModemManager/gdbus-org.freedesktop.ModemManager1.Modem.html#gdbus-property-org-freedesktop-ModemManager1-Modem.Bearers
>
> If you're using raw processing of DBus, you'll need to listen for
> org.freedesktop.DBus.Properties.PropertiesChanged signals emitted, and
> monitor for the "Bearers" property being updated:
>
>              org.freedesktop.DBus.Properties.PropertiesChanged
> (STRING interface_name,
>
> DICT<STRING,VARIANT> changed_properties,
>
> ARRAY<STRING> invalidated_properties);
>
> But doing all this manually is a lot of work really; libmm-glib
> abstracts all this nicely and is much easier to use...
>
> -- 
> Aleksander
> https://aleksander.es
>