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# Copyright (C) 2007, 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, 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.Sugar.Presence"
DBUS_INTERFACE = "org.laptop.Sugar.Presence"
DBUS_PATH = "/org/laptop/Sugar/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])),
'activity-invitation': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT])),
'private-invitation': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT, gobject.TYPE_PYOBJECT,
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_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('ActivityAppeared', self._activity_appeared_cb)
self._ps.connect_to_signal('ActivityDisappeared', self._activity_disappeared_cb)
self._ps.connect_to_signal('ActivityInvitation', self._activity_invitation_cb)
self._ps.connect_to_signal('PrivateInvitation', self._private_invitation_cb)
def _new_object(self, object_path):
obj = self._objcache.get(object_path)
if not obj:
if 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_activity_invitation_signal(self, object_path):
self.emit('activity-invitation', self._new_object(object_path))
return False
def _activity_invitation_cb(self, object_path):
gobject.idle_add(self._emit_activity_invitation_signal, object_path)
def _emit_private_invitation_signal(self, bus_name, connection, channel):
self.emit('service-disappeared', bus_name, connection, channel)
return False
def _private_invitation_cb(self, bus_name, connection, channel):
gobject.idle_add(self._emit_service_disappeared_signal, bus_name,
connection, channel)
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_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.GetActivityById(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(self, key):
try:
buddy_op = self._ps.GetBuddyByPublicKey(dbus.ByteArray(key))
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, properties={}):
actid = activity.get_id()
atype = activity.get_service_name()
name = activity.props.title
serv_op = self._ps.ShareActivity(actid, atype, name, properties)
return self._new_object(serv_op)
_ps = None
def get_instance():
global _ps
if not _ps:
_ps = PresenceService()
return _ps
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