[Rhythmbox-devel] Session Presence Plugin

[Alex Jones <alex weej com>]

Hi all

I've coded a plugin to pay attention to changes in desktop session
presence (i.e. "is the user here or not?"), and pause/resume Rhythmbox
as appropriate.

I was wondering if there was a better way to deal with the logic of
having something automatically pause Rhythmbox than what I've done with
a "paused by us" flag. I could also monitor playing state changes to
decide if someone is overriding it, but I don't know if I'm just barking
up the wrong tree by doing it this way. I'd think it would be nicer to
somehow impose a state of suspension on RB internally, rather than just
automatically hitting play and pause.

Cheers!
-- 
Alex Jones
http://alex.weej.com/

import rb
import gobject
import dbus
import dbus.glib

class SessionPresenceManagerPlugin(rb.Plugin):

    def __init__(self):

        rb.Plugin.__init__(self)

    def activate(self, shell):

        self.shell = shell
        self.paused_by_us = False
        
        session_bus = dbus.SessionBus()
        session_bus.add_signal_receiver(self.on_status_changed_cb,
                                        signal_name="StatusChanged",
                                        dbus_interface="com.weej.SessionPresenceManager",
                                        named_service=None,
                                        path="/com/weej/SessionPresenceManager")

    def deactivate(self, shell):
    
        del self.shell


    def on_status_changed_cb(self, status):

        player = self.shell.get_player()
        if (status == "here" and self.paused_by_us):
            player.play()
            self.paused_by_us = False

        if (status == "not-here" and player.get_playing()):
            self.shell.get_player().pause()
            self.paused_by_us = True