fb716ae046
The ActivityFactory create() method now returns a handler GObject, which callers may attach signals to to receive success and error signals from the result of the activity launch request.
128 lines
4.2 KiB
Python
128 lines
4.2 KiB
Python
# Copyright (C) 2006, Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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import os
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import sys
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import logging
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import dbus
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import dbus.service
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import gobject
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import gtk
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from sugar.presence.PresenceService import PresenceService
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from sugar.activity import Activity
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from sugar.activity.bundle import Bundle
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from sugar import logger
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def get_path(activity_name):
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"""Returns the activity path"""
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return '/' + activity_name.replace('.', '/')
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class ActivityFactory(dbus.service.Object):
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"""Dbus service that takes care of creating new instances of an activity"""
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def __init__(self, activity_type, activity_class):
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self._activity_type = activity_type
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self._activities = []
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splitted_module = activity_class.rsplit('.', 1)
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module_name = splitted_module[0]
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class_name = splitted_module[1]
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module = __import__(module_name)
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for comp in module_name.split('.')[1:]:
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module = getattr(module, comp)
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if hasattr(module, 'start'):
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module.start()
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self._module = module
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self._constructor = getattr(module, class_name)
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bus = dbus.SessionBus()
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factory = activity_type
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bus_name = dbus.service.BusName(factory, bus = bus)
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dbus.service.Object.__init__(self, bus_name, get_path(factory))
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@dbus.service.method("com.redhat.Sugar.ActivityFactory")
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def create(self):
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activity = self._constructor()
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self._activities.append(activity)
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activity.connect('destroy', self._activity_destroy_cb)
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return activity.window.xid
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def _activity_destroy_cb(self, activity):
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self._activities.remove(activity)
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if hasattr(self._module, 'stop'):
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self._module.stop()
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if len(self._activities) == 0:
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gtk.main_quit()
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class ActivityCreationHandler(gobject.GObject):
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__gsignals__ = {
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'error': (gobject.SIGNAL_RUN_FIRST,
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gobject.TYPE_NONE,
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([gobject.TYPE_PYOBJECT])),
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'success': (gobject.SIGNAL_RUN_FIRST,
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gobject.TYPE_NONE,
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([gobject.TYPE_PYOBJECT]))
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}
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def __init__(self, activity_name):
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gobject.GObject.__init__(self)
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bus = dbus.SessionBus()
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factory_name = activity_name
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factory_path = get_path(factory_name)
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proxy_obj = bus.get_object(factory_name, factory_path)
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factory = dbus.Interface(proxy_obj, "com.redhat.Sugar.ActivityFactory")
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factory.create(reply_handler=self._reply_handler, error_handler=self._error_handler)
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def _reply_handler(self, xid):
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bus = dbus.SessionBus()
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proxy_obj = bus.get_object(Activity.get_service_name(xid),
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Activity.get_object_path(xid))
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activity = dbus.Interface(proxy_obj, Activity.ACTIVITY_INTERFACE)
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self.emit('success', activity)
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def _error_handler(self, err):
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logging.debug("Couldn't create activity: %s" % err)
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self.emit('error', err)
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def create(activity_name):
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"""Create a new activity from its name."""
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return ActivityCreationHandler(activity_name)
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def start_factory(activity_class, bundle_path):
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"""Start the activity factory."""
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bundle = Bundle(bundle_path)
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logger.start(bundle.get_name())
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os.environ['SUGAR_BUNDLE_PATH'] = bundle_path
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os.environ['SUGAR_BUNDLE_SERVICE_NAME'] = bundle.get_service_name()
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os.environ['SUGAR_BUNDLE_DEFAULT_TYPE'] = bundle.get_default_type()
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factory = ActivityFactory(bundle.get_service_name(), activity_class)
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