# 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 sys
from optparse import OptionParser
import gettext

import gobject
import gtk
import dbus
import dbus.service
import dbus.glib

from sugar.activity.bundle import Bundle
from sugar.activity import activityhandle
from sugar import logger

# Work around for dbus mutex locking issue
gobject.threads_init()
dbus.glib.threads_init()

class ActivityFactoryService(dbus.service.Object):
    """D-Bus service that creates 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", in_signature="a{ss}")
    def create(self, handle):
        activity_handle = activityhandle.create_from_dict(handle)
        activity = self._constructor(activity_handle)
        activity.present()

        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 run_with_args(args):
    """Start the activity factory."""
    parser = OptionParser()
    parser.add_option("-p", "--bundle-path", dest="bundle_path",
                      help="path to the activity bundle")
    (options, args) = parser.parse_args()

    run(options.bundle_path)

def run(bundle_path):
    sys.path.insert(0, bundle_path)

    bundle = Bundle(bundle_path)

    logger.start(bundle.get_name())

    gettext.bindtextdomain(bundle.get_service_name(),
                           bundle.get_locale_path())
    gettext.textdomain(bundle.get_service_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 = ActivityFactoryService(bundle.get_service_name(),
                                     bundle.get_class())