[patch] [python] Allow binding a service to the default (unique) name

[Wladimir van der Laan]

Oops, seems my gmail messed up my last message, though the patch got
through my description didn't show up:

This simple patch allows binding a service on the default name,
instead of requesting and owning a name from the bus. This allows for
semi-anonymous sending of signals, in my case, I'm broadcasting
signals from a web interface built with apache and mod_python. As this
spans multiple processes which only exist temporarily I cannot
register a single service name.

A simple example of usage:

----------------------------------------------------------------------------------------------------------
# Sender
import gobject
import dbus
import dbus.service
import  dbus.glib

class HelloWorldObject(dbus.service.Object):
    def __init__(self, bus_name, object_path='/org/angeltech/Test'):
        dbus.service.Object.__init__(self, bus_name, object_path)

    @dbus.service.signal ('org.angeltech.TestInterface')
    def hello_signal(self, message):
        pass

bus = dbus.SessionBus()

bus_name = dbus.service.BusName(bus=bus)
object = HelloWorldObject(bus_name)

object.hello_signal ('I sent a hello signal')

----------------------------------------------------------------------------------------------------------
 # Receiver (can be many)
import gobject
import dbus
 import dbus.glib

def device_added_callback(udi):
    print 'Message received %s' % (udi)

bus = dbus.SessionBus()

bus.add_signal_receiver (device_added_callback,
                        signal_name='hello_signal',
                        dbus_interface='org.angeltech.TestInterface',
                        path='/org/angeltech/Test')

mainloop =  gobject.MainLoop()
mainloop.run()


-- 
Wladimir
Ogre3D Team (http://www.ogre3d.org)