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Python

# 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 os
import dbus
import dbus.service
from sugar.activity.bundle import Bundle
from sugar import logger
class ActivityFactory(dbus.service.Object):
"""Dbus service that takes care of creating new instances of an activity"""
def __init__(self, service_name, activity_class):
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()
bus_name = dbus.service.BusName(service_name, bus = bus)
object_path = '/' + service_name.replace('.', '/')
dbus.service.Object.__init__(self, bus_name, object_path)
@dbus.service.method("com.redhat.Sugar.ActivityFactory")
def create(self):
activity = self._constructor()
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 start(activity_class, bundle_path):
"""Start the activity factory."""
bundle = Bundle(bundle_path)
logger.start(bundle.get_name())
os.environ['SUGAR_BUNDLE_PATH'] = bundle_path
os.environ['SUGAR_BUNDLE_SERVICE_NAME'] = bundle.get_service_name()
os.environ['SUGAR_BUNDLE_DEFAULT_TYPE'] = bundle.get_default_type()
factory = ActivityFactory(bundle.get_service_name(), activity_class)