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#!/usr/bin/env python
# -*- coding: UTF-8 -*-

# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# Authors: Quinn Storm (quinn@beryl-project.org)
#          Patrick Niklaus (marex@opencompositing.org)
# Copyright (C) 2007 Quinn Storm

DBUS_CCSM_SERVICE = 'org.compiz_fusion.ccsm'
DBUS_CCSM_PATH = '/org/compiz_fusion/ccsm'
DBUS_CCSM_INTERFACE = 'org.compiz_fusion.ccsm'

# from the D-Bus specification
DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER = 1

from optparse import OptionParser
import pygtk
pygtk.require('2.0')
import gtk
import sys

def try_register_dbus ():
    '''Return instance of dbus control object on success, None on failure'''
    try:
        import dbus, dbus.service
        from dbus.mainloop.glib import DBusGMainLoop

    except ImportError:
        return

    # rely on a reasonably new dbus-python
    if dbus.version < (0, 80, 0):
        return

    class CCSMObject(dbus.service.Object):
        main_window = None

        @dbus.service.method(DBUS_CCSM_INTERFACE, in_signature='s', out_signature='')
        def present (self, startup_id):
            if startup_id:
                self.main_window.set_startup_id(startup_id)
            else:
                self.main_window.present()

    DBusGMainLoop(set_as_default=True)

    try:
        bus = dbus.SessionBus()
    except dbus.DBusException:
        return

    try:
        obj = bus.get_object(DBUS_CCSM_SERVICE, DBUS_CCSM_PATH)
        obj = dbus.Interface(obj, DBUS_CCSM_INTERFACE)
    except dbus.DBusException:
        # no ccsm instance running
        if (bus.request_name(DBUS_CCSM_SERVICE)
            == DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER):
            return CCSMObject(bus, DBUS_CCSM_PATH)
        else:
            return

    else:
        try:
            display = gtk.gdk.display_get_default()
            startup_id = gtk.gdk.x11_display_get_startup_notification_id(display)
            obj.present(startup_id or "")
            print('Another CCSM instance already running')
            sys.exit(0)
        except dbus.DBusException:
            # error on present call so pretend it doesn't exist and start up normally
            return

dbusObj = try_register_dbus()

if gtk.pygtk_version < (2,12,0):
    raise SystemExit("PyGtk 2.12.0 or later required")

import compizconfig
import ccm
from ccm.Utils import GlobalUpdater
from ccm.Constants import Version

plugin   = None
category = None
parser   = OptionParser()
parser.add_option("-p", "--plugin", dest = "plugin",
                  help = "Directly jump to the page of PLUGIN",
                  metavar = "PLUGIN")
parser.add_option("-c", "--category", dest = "category",
                  help = "Directly jump to CATEGORY",
                  metavar = "CATEGORY")
parser.add_option("-v", "--version", dest = "version",
                  action = "store_true",
                  help = "Version")
(options, args) = parser.parse_args()
if options.version:
    print("CCSM %s" % Version)
    sys.exit(0)
if options.plugin:
    plugin = options.plugin
if options.category:
    category = options.category

context = compizconfig.Context(ccm.getDefaultScreen())
GlobalUpdater.SetContext (context)
mainWin = ccm.MainWin(context, plugin, category)
if dbusObj is not None:
    dbusObj.main_window = mainWin

idle = ccm.IdleSettingsParser(context, mainWin)
mainWin.show_all()

gtk.main()