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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 sys
import logging
import dbus
import dbus.service
import gobject
import gtk
from sugar.presence.PresenceService import PresenceService
from sugar.activity import Activity
def get_path(activity_name):
"""Returns the activity path"""
return '/' + activity_name.replace('.', '/')
class ActivityFactory(dbus.service.Object):
"""Dbus service that takes care of creating new instances of an activity"""
def __init__(self, activity_type, activity_class):
self._activity_type = activity_type
self._activities = []
splitted_module = activity_class.rsplit('.', 1)
module_name = splitted_module[0]
class_name = splitted_module[1]
module = __import__(module_name)
for comp in module_name.split('.')[1:]:
module = getattr(module, comp)
if hasattr(module, 'start'):
module.start()
self._module = module
self._constructor = getattr(module, class_name)
bus = dbus.SessionBus()
factory = activity_type
bus_name = dbus.service.BusName(factory, bus = bus)
dbus.service.Object.__init__(self, bus_name, get_path(factory))
@dbus.service.method("com.redhat.Sugar.ActivityFactory")
def create(self):
activity = self._constructor()
activity.set_type(self._activity_type)
self._activities.append(activity)
activity.connect('destroy', self._activity_destroy_cb)
return activity.window.xid
def _activity_destroy_cb(self, activity):
self._activities.remove(activity)
if hasattr(self._module, 'stop'):
self._module.stop()
if len(self._activities) == 0:
gtk.main_quit()
def create(activity_name):
"""Create a new activity from his name."""
bus = dbus.SessionBus()
factory_name = activity_name
factory_path = get_path(factory_name)
proxy_obj = bus.get_object(factory_name, factory_path)
factory = dbus.Interface(proxy_obj, "com.redhat.Sugar.ActivityFactory")
xid = factory.create()
bus = dbus.SessionBus()
proxy_obj = bus.get_object(Activity.get_service_name(xid),
Activity.get_object_path(xid))
activity = dbus.Interface(proxy_obj, Activity.ACTIVITY_INTERFACE)
return activity
def register_factory(name, activity_class):
"""Register the activity factory."""
factory = ActivityFactory(name, activity_class)
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