[PATCH weston v3] libweston-desktop: add signal for title/app-id changes

[Matt Hoosier]

On Fri, Dec 8, 2017 at 4:26 AM, Quentin Glidic
<sardemff7+wayland at sardemff7.net> wrote:
> On 12/8/17 11:22 AM, Quentin Glidic wrote:
>>
>> From: Matt Hoosier <matt.hoosier at gmail.com>
>>
>> As discussed on
>>
>> https://lists.freedesktop.org/archives/wayland-devel/2017-August/034720.html,
>> it's useful for the shell implementation to know when these change,
>> for example to relay the information on to taskbars or similar.
>>
>> To avoid ABI changes or the need to make the weston_desktop_surface
>> definition public, new functions are introduced for attaching
>> listeners to these signals.
>>
>> Signed-off-by: Matt Hoosier <matt.hoosier at gmail.com>
>> Reviewed-by: Quentin Glidic <sardemff7+git at sardemff7.net>
>> Signed-off-by: Quentin Glidic <sardemff7+git at sardemff7.net>
>> ---
>
>
> (Err, wanted to drop the Sob send-email added via command line and I just
> closed vim…)
>
> I made this v3 to rename the signal to "metadata" instead of "title", but
> also to tweak a tiny bit the signal sending. I wanted the shell not to have
> to strdup() these, so now, it can listen to the signal, and compare old and
> new values (and even use both) without extra cost.
> Do you ack that change?
>
> Still not sure I prefer a signal to just adding to the callbacks struct, but
> we can always break API/ABI again later if we need to. :-)

I like the change, and prefer the name "metadata" for the signal
anyway. The v3 changes are:

Acked-by: Matt Hoosier <matt.hoosier at gmail.com>

(Not sure whether you actually want to put it into the commit message,
since I'm the original author. But I approve.)

Thanks for the review.