159 lines
5.5 KiB
Python
159 lines
5.5 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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from optparse import OptionParser
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import gettext
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import gobject
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import gtk
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import dbus
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import dbus.service
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import dbus.glib
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from sugar.activity.bundle import Bundle
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from sugar.activity import activityhandle
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from sugar import logger
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# Work around for dbus mutex locking issue
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gobject.threads_init()
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dbus.glib.threads_init()
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class ActivityFactoryService(dbus.service.Object):
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"""D-Bus service that creates instances of Python activities
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The ActivityFactoryService is a dbus service created for
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each Python based activity type (that is, each activity
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bundle which declares a "class" in its activity.info file,
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rather than an "exec").
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The ActivityFactoryService is the actual process which
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instantiates the Python classes for Sugar interfaces. That
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is, your Python code runs in the same process as the
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ActivityFactoryService itself.
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The "service" process is created at the moment Sugar first
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attempts to create an instance of the activity type. It
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then remains in memory until the last instance of the
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activity type is terminated.
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"""
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def __init__(self, service_name, activity_class):
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"""Initialize the service to create activities of this type
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service_name -- bundle's service name, this is used
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to construct the dbus service name used to access
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the created service.
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activity_class -- dotted Python class name for the
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Activity class which is to be instantiated by
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the service. Assumed to be composed of a module
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followed by a class.
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if the module specified has a "start" attribute this object
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will be called on service initialisation (before first
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instance is created).
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if the module specified has a "stop" attribute this object
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will be called after every instance exits (note: may be
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called multiple times for each time start is called!)
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"""
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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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bus_name = dbus.service.BusName(service_name, bus = bus)
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object_path = '/' + service_name.replace('.', '/')
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dbus.service.Object.__init__(self, bus_name, object_path)
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@dbus.service.method("com.redhat.Sugar.ActivityFactory", in_signature="a{ss}")
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def create(self, handle):
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"""Create a new instance of this activity
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handle -- sugar.activity.activityhandle.ActivityHandle
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compatible dictionary providing the instance-specific
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values for the new instance
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returns xid for the created instance' root window
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"""
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activity_handle = activityhandle.create_from_dict(handle)
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activity = self._constructor(activity_handle)
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activity.present()
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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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"""On close of an instance's root window
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Removes the activity from the tracked activities.
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If our implementation module has a stop, calls
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that.
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If there are no more tracked activities, closes
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the activity.
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"""
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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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def run_with_args(args):
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"""Start the activity factory."""
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parser = OptionParser()
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parser.add_option("-p", "--bundle-path", dest="bundle_path",
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help="path to the activity bundle")
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(options, args) = parser.parse_args()
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run(options.bundle_path)
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def run(bundle_path):
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sys.path.append(bundle_path)
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bundle = Bundle(bundle_path)
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logger.start(bundle.get_name())
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gettext.bindtextdomain(bundle.get_service_name(),
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bundle.get_locale_path())
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gettext.textdomain(bundle.get_service_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_NAME'] = bundle.get_name()
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factory = ActivityFactoryService(bundle.get_service_name(),
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bundle.get_class())
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