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# Copyright (C) 2007, Red Hat, Inc.
# Copyright (C) 2010 Collabora Ltd. <http://www.collabora.co.uk/>
#
# 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.
"""
STABLE.
"""
import logging
import gobject
import dbus
import dbus.exceptions
import dbus.glib
from dbus import PROPERTIES_IFACE
""" FIXME ... """
try:
from sugar.presence.buddy import Buddy, Owner
from sugar.presence.activity import Activity
from sugar.presence.connectionmanager import get_connection_manager
except:
pass
from telepathy.interfaces import ACCOUNT, \
ACCOUNT_MANAGER, \
CONNECTION
from telepathy.constants import HANDLE_TYPE_CONTACT
_logger = logging.getLogger('sugar.presence.presenceservice')
ACCOUNT_MANAGER_SERVICE = 'org.freedesktop.Telepathy.AccountManager'
ACCOUNT_MANAGER_PATH = '/org/freedesktop/Telepathy/AccountManager'
CONN_INTERFACE_ACTIVITY_PROPERTIES = 'org.laptop.Telepathy.ActivityProperties'
class PresenceService(gobject.GObject):
"""Provides simplified access to the Telepathy framework to activities"""
__gsignals__ = {
'activity-shared': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
([gobject.TYPE_PYOBJECT, gobject.TYPE_PYOBJECT,
gobject.TYPE_PYOBJECT])),
}
def __init__(self):
"""Initialise the service and attempt to connect to events
"""
gobject.GObject.__init__(self)
self._activity_cache = None
self._buddy_cache = {}
def get_activity(self, activity_id, warn_if_none=True):
"""Retrieve single Activity object for the given unique id
activity_id -- unique ID for the activity
returns single Activity object or None if the activity
is not found using GetActivityById on the service
"""
if self._activity_cache is not None:
if self._activity_cache.props.id != activity_id:
raise RuntimeError('Activities can only access their own'
' shared instance')
return self._activity_cache
else:
connection_manager = get_connection_manager()
connections_per_account = \
connection_manager.get_connections_per_account()
for account_path, connection in connections_per_account.items():
if not connection.connected:
continue
logging.debug('Calling GetActivity on %s', account_path)
try:
room_handle = connection.connection.GetActivity(
activity_id,
dbus_interface=CONN_INTERFACE_ACTIVITY_PROPERTIES)
except dbus.exceptions.DBusException, e:
name = 'org.freedesktop.Telepathy.Error.NotAvailable'
if e.get_dbus_name() == name:
logging.debug("There's no shared activity with the id "
"%s", activity_id)
else:
raise
else:
activity = Activity(account_path, connection.connection,
room_handle=room_handle)
self._activity_cache = activity
return activity
return None
def get_activity_by_handle(self, connection_path, room_handle):
if self._activity_cache is not None:
if self._activity_cache.room_handle != room_handle:
raise RuntimeError('Activities can only access their own'
' shared instance')
return self._activity_cache
else:
connection_manager = get_connection_manager()
account_path = \
connection_manager.get_account_for_connection(connection_path)
connection_name = connection_path.replace('/', '.')[1:]
bus = dbus.SessionBus()
connection = bus.get_object(connection_name, connection_path)
activity = Activity(account_path, connection,
room_handle=room_handle)
self._activity_cache = activity
return activity
def get_buddy(self, account_path, contact_id):
if (account_path, contact_id) in self._buddy_cache:
return self._buddy_cache[(account_path, contact_id)]
buddy = Buddy(account_path, contact_id)
self._buddy_cache[(account_path, contact_id)] = buddy
return buddy
# DEPRECATED
def get_buddy_by_telepathy_handle(self, tp_conn_name, tp_conn_path,
handle):
"""Retrieve single Buddy object for the given public key
:Parameters:
`tp_conn_name` : str
The well-known bus name of a Telepathy connection
`tp_conn_path` : dbus.ObjectPath
The object path of the Telepathy connection
`handle` : int or long
The handle of a Telepathy contact on that connection,
of type HANDLE_TYPE_CONTACT. This may not be a
channel-specific handle.
:Returns: the Buddy object, or None if the buddy is not found
"""
bus = dbus.Bus()
obj = bus.get_object(ACCOUNT_MANAGER_SERVICE, ACCOUNT_MANAGER_PATH)
account_manager = dbus.Interface(obj, ACCOUNT_MANAGER)
account_paths = account_manager.Get(ACCOUNT_MANAGER, 'ValidAccounts',
dbus_interface=PROPERTIES_IFACE)
for account_path in account_paths:
obj = bus.get_object(ACCOUNT_MANAGER_SERVICE, account_path)
connection_path = obj.Get(ACCOUNT, 'Connection')
if connection_path == tp_conn_path:
connection_name = connection_path.replace('/', '.')[1:]
connection = bus.get_object(connection_name, connection_path)
contact_ids = connection.InspectHandles(HANDLE_TYPE_CONTACT,
[handle],
dbus_interface=CONNECTION)
return self.get_buddy(account_path, contact_ids[0])
raise ValueError('Unknown buddy in connection %s with handle %d',
tp_conn_path, handle)
def get_owner(self):
"""Retrieves the laptop Buddy object."""
#return Owner()
return None
def __share_activity_cb(self, activity):
"""Finish sharing the activity
"""
self.emit('activity-shared', True, activity, None)
def __share_activity_error_cb(self, activity, error):
"""Notify with GObject event of unsuccessful sharing of activity
"""
self.emit('activity-shared', False, activity, error)
def share_activity(self, activity, properties=None, private=True):
if properties is None:
properties = {}
if 'id' not in properties:
properties['id'] = activity.get_id()
if 'type' not in properties:
properties['type'] = activity.get_bundle_id()
if 'name' not in properties:
properties['name'] = activity.metadata.get('title', None)
if 'color' not in properties:
properties['color'] = activity.metadata.get('icon-color', None)
properties['private'] = private
if self._activity_cache is not None:
raise ValueError('Activity %s is already tracked',
activity.get_id())
connection_manager = get_connection_manager()
account_path, connection = \
connection_manager.get_preferred_connection()
if connection is None:
self.emit('activity-shared', False, None,
'No active connection available')
return
shared_activity = Activity(account_path, connection,
properties=properties)
self._activity_cache = shared_activity
if shared_activity.props.joined:
raise RuntimeError('Activity %s is already shared.' %
activity.props.id)
shared_activity.share(self.__share_activity_cb,
self.__share_activity_error_cb)
def get_preferred_connection(self):
"""Gets the preferred telepathy connection object that an activity
should use when talking directly to telepathy
returns the bus name and the object path of the Telepathy connection
"""
manager = get_connection_manager()
account_path, connection = manager.get_preferred_connection()
if connection is None:
return None
else:
return connection.requested_bus_name, connection.object_path
# DEPRECATED
def get(self, object_path):
raise NotImplementedError()
# DEPRECATED
def get_activities(self):
raise NotImplementedError()
# DEPRECATED
def get_activities_async(self, reply_handler=None, error_handler=None):
raise NotImplementedError()
# DEPRECATED
def get_buddies(self):
raise NotImplementedError()
# DEPRECATED
def get_buddies_async(self, reply_handler=None, error_handler=None):
raise NotImplementedError()
_ps = None
def get_instance(allow_offline_iface=False):
"""Retrieve this process' view of the PresenceService"""
global _ps
if not _ps:
_ps = PresenceService()
return _ps
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