sugar-toolkit-gtk3/sugar/activity/activityservice.py

# 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
import dbus.service

from sugar.presence import PresenceService

_ACTIVITY_SERVICE_NAME = "org.laptop.Activity"
_ACTIVITY_SERVICE_PATH = "/org/laptop/Activity"
_ACTIVITY_INTERFACE = "org.laptop.Activity"

class ActivityService(dbus.service.Object):
    """Base dbus service object that each Activity uses to export dbus methods.
    
    The dbus service is separate from the actual Activity object so that we can
    tightly control what stuff passes through the dbus python bindings."""

    def __init__(self, activity):
        xid = activity.window.xid
        service_name = _ACTIVITY_SERVICE_NAME + '%d' % xid 
        object_path = _ACTIVITY_SERVICE_PATH + "/%s" % xid

        bus = dbus.SessionBus()
        bus_name = dbus.service.BusName(service_name, bus=bus)
        dbus.service.Object.__init__(self, bus_name, object_path)

        self._activity = activity

    @dbus.service.method(_ACTIVITY_INTERFACE)
    def share(self):
        """Called by the shell to request the activity to share itself on the network."""
        self._activity.share()

    @dbus.service.method(_ACTIVITY_INTERFACE)
    def get_id(self):
        """Get the activity identifier"""
        return self._activity.get_id()

    @dbus.service.method(_ACTIVITY_INTERFACE)
    def get_type(self):
        """Get the activity type"""
        return self._activity.get_type()

    @dbus.service.method(_ACTIVITY_INTERFACE)
    def get_shared(self):
        """Returns True if the activity is shared on the mesh."""
        return self._activity.get_shared()

    @dbus.service.method(_ACTIVITY_INTERFACE,
                         in_signature="sas", out_signature="b")
    def execute(self, command, args):
        return self._activity.execute(command, args)