mmkeys-mate2gnome

#!/usr/bin/env python

'''
Created on 11.03.2010

@author: Arthur Spitzer <arthapex@gmail.com>

Modified on 28.05.2012

@author: Matteo Italia <matteo@mitalia.net>
'''


import dbus.mainloop.glib
import dbus.service

import gobject

app_name = 'mmkeys-mate2gnome'
Version=0.1

Gnome_DbusBusName = 'org.gnome.SettingsDaemon'
Gnome_DbusObjectPath = '/org/gnome/SettingsDaemon/MediaKeys'
Gnome_DbusInterface = 'org.gnome.SettingsDaemon.MediaKeys'

Mate_DbusBusName = 'org.mate.SettingsDaemon'
Mate_DbusObjectPath = '/org/mate/SettingsDaemon/MediaKeys'
Mate_DbusInterface = 'org.mate.SettingsDaemon.MediaKeys'

class SettingsDaemonObject(dbus.service.Object):
    def __init__(self, session_bus):
        dbus.service.Object.__init__(self, session_bus, object_path=Gnome_DbusObjectPath)
        self.__paused = False
        self.__playing = False
        self.__apps = []

    @dbus.service.method(dbus_interface=Gnome_DbusInterface, in_signature='sd', out_signature='')
    def GrabMediaPlayerKeys(self, app_name, time):
        self.__apps.append(app_name)

    @dbus.service.method(dbus_interface=Gnome_DbusInterface, in_signature='s', out_signature='')
    def ReleaseMediaPlayerKeys(self, app_name):
        self.__apps.remove(app_name)

    @dbus.service.signal(dbus_interface=Gnome_DbusInterface)
    def MediaPlayerKeyPressed(self, app_name, action):
        pass

    @dbus.service.method(dbus_interface=Gnome_DbusInterface, in_signature='s')
    def PressedKey(self, action):
        self.__send_action_to_all_apps(action)

    def __send_action_to_all_apps(self, action):
        for app in self.__apps:
            self.MediaPlayerKeyPressed(app, action)

    @dbus.service.method(dbus_interface=Gnome_DbusInterface)
    def PressedPlay(self):
        self.__send_action_to_all_apps('Play')
        self.__playing = True

    @dbus.service.method(dbus_interface=Gnome_DbusInterface)
    def PressedPause(self):
        self.__send_action_to_all_apps('Pause')

    @dbus.service.method(dbus_interface=Gnome_DbusInterface)
    def PressedStop(self):
        self.__send_action_to_all_apps('Stop')

    @dbus.service.method(dbus_interface=Gnome_DbusInterface)
    def PressedNext(self):
        self.__send_action_to_all_apps('Next')

    @dbus.service.method(dbus_interface=Gnome_DbusInterface)
    def PressedPrevious(self):
        self.__send_action_to_all_apps('Previous')

class Translator:
    def __init__(self):
        service = dbus.SessionBus().get_object(Gnome_DbusBusName, Gnome_DbusObjectPath)
        self.__dbusInterface = dbus.Interface(service, Gnome_DbusInterface)

    def translator(self, app_name, action):
        # Async call, otherwise we get stuck (the server is running in this same thread)
        self.__dbusInterface.PressedKey(action, reply_handler=lambda: None, error_handler=lambda *e: None)

if __name__ == '__main__':

    # DBUS boilerplate
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)

    session_bus = dbus.SessionBus()
    name = dbus.service.BusName(Gnome_DbusBusName, session_bus)
    object = SettingsDaemonObject(session_bus)

    # Input part
    mate_settings_bus = session_bus.get_object(Mate_DbusBusName, Mate_DbusObjectPath)

    # this is what gives us the multi media keys.
    mate_mmkeys_if=Mate_DbusInterface
    mate_settings_bus.GrabMediaPlayerKeys(app_name, 0,
                                   dbus_interface=mate_mmkeys_if)

    tr=Translator();

    # register the translator
    mate_settings_bus.connect_to_signal('MediaPlayerKeyPressed', tr.translator)

    # start the main loop
    mainloop = gobject.MainLoop()
    mainloop.run()