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# Copyright (C) 2006, Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
import dbus, dbus.glib, gobject
import Buddy, Service, Activity
class ObjectCache(object):
def __init__(self):
self._cache = {}
def get(self, object_path):
try:
return self._cache[object_path]
except KeyError:
return None
def add(self, obj):
op = obj.object_path()
if not self._cache.has_key(op):
self._cache[op] = obj
def remove(self, object_path):
if self._cache.has_key(object_path):
del self._cache[object_path]
DBUS_SERVICE = "org.laptop.Presence"
DBUS_INTERFACE = "org.laptop.Presence"
DBUS_PATH = "/org/laptop/Presence"
class PresenceService(gobject.GObject):
__gsignals__ = {
'buddy-appeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'buddy-disappeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'service-appeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'service-disappeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'activity-appeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'activity-disappeared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT]))
}
_PS_BUDDY_OP = DBUS_PATH + "/Buddies/"
_PS_SERVICE_OP = DBUS_PATH + "/Services/"
_PS_ACTIVITY_OP = DBUS_PATH + "/Activities/"
def __init__(self):
gobject.GObject.__init__(self)
self._objcache = ObjectCache()
self._bus = dbus.SessionBus()
self._ps = dbus.Interface(self._bus.get_object(DBUS_SERVICE,
DBUS_PATH), DBUS_INTERFACE)
self._ps.connect_to_signal('BuddyAppeared', self._buddy_appeared_cb)
self._ps.connect_to_signal('BuddyDisappeared', self._buddy_disappeared_cb)
self._ps.connect_to_signal('ServiceAppeared', self._service_appeared_cb)
self._ps.connect_to_signal('ServiceDisappeared', self._service_disappeared_cb)
self._ps.connect_to_signal('ActivityAppeared', self._activity_appeared_cb)
self._ps.connect_to_signal('ActivityDisappeared', self._activity_disappeared_cb)
def _new_object(self, object_path):
obj = self._objcache.get(object_path)
if not obj:
if object_path.startswith(self._PS_SERVICE_OP):
obj = Service.Service(self._bus, self._new_object,
self._del_object, object_path)
elif object_path.startswith(self._PS_BUDDY_OP):
obj = Buddy.Buddy(self._bus, self._new_object,
self._del_object, object_path)
elif object_path.startswith(self._PS_ACTIVITY_OP):
obj = Activity.Activity(self._bus, self._new_object,
self._del_object, object_path)
else:
raise RuntimeError("Unknown object type")
self._objcache.add(obj)
return obj
def _del_object(self, object_path):
# FIXME
pass
def _emit_buddy_appeared_signal(self, object_path):
self.emit('buddy-appeared', self._new_object(object_path))
return False
def _buddy_appeared_cb(self, op):
gobject.idle_add(self._emit_buddy_appeared_signal, op)
def _emit_buddy_disappeared_signal(self, object_path):
self.emit('buddy-disappeared', self._new_object(object_path))
return False
def _buddy_disappeared_cb(self, object_path):
gobject.idle_add(self._emit_buddy_disappeared_signal, object_path)
def _emit_service_appeared_signal(self, object_path):
self.emit('service-appeared', self._new_object(object_path))
return False
def _service_appeared_cb(self, object_path):
gobject.idle_add(self._emit_service_appeared_signal, object_path)
def _emit_service_disappeared_signal(self, object_path):
self.emit('service-disappeared', self._new_object(object_path))
return False
def _service_disappeared_cb(self, object_path):
gobject.idle_add(self._emit_service_disappeared_signal, object_path)
def _emit_activity_appeared_signal(self, object_path):
self.emit('activity-appeared', self._new_object(object_path))
return False
def _activity_appeared_cb(self, object_path):
gobject.idle_add(self._emit_activity_appeared_signal, object_path)
def _emit_activity_disappeared_signal(self, object_path):
self.emit('activity-disappeared', self._new_object(object_path))
return False
def _activity_disappeared_cb(self, object_path):
gobject.idle_add(self._emit_activity_disappeared_signal, object_path)
def get(self, object_path):
return self._new_object(object_path)
def get_services(self):
resp = self._ps.getServices()
servs = []
for item in resp:
servs.append(self._new_object(item))
return servs
def get_services_of_type(self, stype):
resp = self._ps.getServicesOfType(stype)
servs = []
for item in resp:
servs.append(self._new_object(item))
return servs
def get_activities(self):
resp = self._ps.getActivities()
acts = []
for item in resp:
acts.append(self._new_object(item))
return acts
def get_activity(self, activity_id):
try:
act_op = self._ps.getActivity(activity_id)
except dbus.exceptions.DBusException:
return None
return self._new_object(act_op)
def get_buddies(self):
resp = self._ps.getBuddies()
buddies = []
for item in resp:
buddies.append(self._new_object(item))
return buddies
def get_buddy_by_name(self, name):
try:
buddy_op = self._ps.getBuddyByName(name)
except dbus.exceptions.DBusException:
return None
return self._new_object(buddy_op)
def get_buddy_by_address(self, addr):
try:
buddy_op = self._ps.getBuddyByAddress(addr)
except dbus.exceptions.DBusException:
return None
return self._new_object(buddy_op)
def get_owner(self):
try:
owner_op = self._ps.getOwner()
except dbus.exceptions.DBusException:
return None
return self._new_object(owner_op)
def share_activity(self, activity, stype, properties={}, address=None, port=-1, domain=u"local"):
actid = activity.get_id()
if address == None:
address = u""
serv_op = self._ps.shareActivity(actid, stype, properties, address, port, domain)
return self._new_object(serv_op)
def register_service(self, name, stype, properties={}, address=None, port=-1, domain=u"local"):
if address == None:
address = u""
serv_op = self._ps.registerService(name, stype, properties, address, port, domain)
return self._new_object(serv_op)
def unregister_service(self, service):
self._ps.unregisterService(service.object_path())
def register_service_type(self, stype):
self._ps.registerServiceType(stype)
def unregister_service_type(self, stype):
self._ps.unregisterServiceType(stype)
_ps = None
def get_instance():
global _ps
if not _ps:
_ps = PresenceService()
return _ps
def start():
bus = dbus.SessionBus()
ps = dbus.Interface(bus.get_object(DBUS_SERVICE, DBUS_PATH), DBUS_INTERFACE)
ps.start()
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