Impress Remote / dbus

[Andrzej J. R. Hunt]

Hi everyone,

I started working on changing my bluetooth code from using gdbus to 
dbus-glib -- dbus is necessary to control bluetooth on linux systems -- 
but I'm not sure about how to proceed regarding the various dbus 
libraries and their availability:

gdbus is included in glib >= 2.26 (i.e. since 2010), dbus-glib is 
included in the LO codebase and works with all versions of glib (as far 
as I can tell).

Currently dbus-glib is only used in vcl with gtk, and it is only 
compiled when --enabled-dbus is used. (The doc on the autogen.sh page 
states " Determines whether to enable presentation mode screensaver 
control under GNOME via DBUS.") It appears that this isn't very commonly 
enabled (default is off, and only enabled for OxygenOffice in 
distro-configs).

dbus-glib is used in tubes.

I think it would be worthwhile having bluetooth working by default for 
the remote control. Should I:

1. Port my code to dbus-glib and always build dbus-glib? Or port my code 
to dbus-glib and leave everything else as is, meaning bluetooth on Linux 
needs the user to use --enable-dbus?
2. Have two versions of my code, use gdbus if available, else fall back 
to dbus-glib unless disabled, else disable bluetooth (the dbus code is 
minimal, and I already have to use ifdefs for every OS there).
3. Stick with gdbus, i.e. no bluetooth unless compiling on a modern system?


On a related note: would it be a good idea to add a "enable remote 
control" checkbox to the remote control dialog, and have remote control 
possibly disabled by default in case people are worried about having LO 
always open a port?


Cheers,

Andrzej
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