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Viewing changes to ubuntuone/platform/linux/session.py

  • Committer: Bazaar Package Importer
  • Author(s): Rodney Dawes
  • Date: 2011-02-23 18:34:09 UTC
  • mfrom: (1.1.45 upstream)
  • Revision ID: james.westby@ubuntu.com-20110223183409-535o7yo165wbjmca
Tags: 1.5.5-0ubuntu1
https://launchpad.net/bugs/712528
https://launchpad.net/bugs/714976
https://launchpad.net/bugs/702116
https://launchpad.net/bugs/715887
* New upstream release.
  - Subscribing to a RO share will not download content (LP: #712528)
  - Can't synchronize "~/Ubuntu One Music" (LP: #714976)
  - Syncdaemon needs to show progress in Unity launcher (LP: #702116)
  - Notifications say "your cloud" (LP: #715887)
  - No longer requires python-libproxy
  - Recommend unity and indicator libs by default

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ubuntuone/platform/linux/session.py
 
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# ubuntuone.platform.linux.session
 
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#
 
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# Author: Alejandro J. Cura <alecu@canonical.com>
 
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#
 
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# Copyright 2011 Canonical Ltd.
 
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#
 
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# This program is free software: you can redistribute it and/or modify it
 
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# under the terms of the GNU General Public License version 3, as published
 
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# by the Free Software Foundation.
 
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#
 
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# This program is distributed in the hope that it will be useful, but
 
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# WITHOUT ANY WARRANTY; without even the implied warranties of
 
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# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
 
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# PURPOSE.  See the GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License along
 
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# with this program.  If not, see <http://www.gnu.org/licenses/>.
 
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"""Inhibit session logout when busy thru the Gnome Session DBus service."""
 
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import dbus
 
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from twisted.internet import defer
 
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SESSION_MANAGER_BUSNAME = "org.gnome.SessionManager"
 
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SESSION_MANAGER_IFACE = "org.gnome.SessionManager"
 
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SESSION_MANAGER_PATH = "/org/gnome/SessionManager"
 
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INHIBIT_LOGGING_OUT = 1
 
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INHIBIT_USER_SWITCHING = 2
 
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INHIBIT_SUSPENDING_COMPUTER = 4
 
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INHIBIT_SESSION_IDLE = 8
 
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INHIBIT_LOGOUT_SUSPEND = INHIBIT_LOGGING_OUT | INHIBIT_SUSPENDING_COMPUTER
 
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APP_ID = "Ubuntu One"
 
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TOPLEVEL_XID = 0
 
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class Inhibitor(object):
 
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    """An object representing an inhibition, that can be cancelled."""
 
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    def __init__(self):
 
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        """Initialize this instance."""
 
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        self.cookie = None
 
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        bus = dbus.SessionBus()
 
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        obj = bus.get_object(bus_name=SESSION_MANAGER_BUSNAME,
 
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                             object_path=SESSION_MANAGER_PATH,
 
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                             follow_name_owner_changes=True)
 
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        self.proxy = dbus.Interface(object=obj,
 
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                                    dbus_interface=SESSION_MANAGER_IFACE)
 
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    def inhibit(self, flags, reason):
 
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        """Inhibit some events with a given reason."""
 
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        d = defer.Deferred()
 
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        def inhibit_handler(cookie):
 
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            """Got the cookie for this inhibition."""
 
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            self.cookie = cookie
 
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            d.callback(self)
 
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        self.proxy.Inhibit(APP_ID, TOPLEVEL_XID, reason, flags,
 
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                           reply_handler=inhibit_handler,
 
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                           error_handler=d.errback)
 
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        return d
 
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    def cancel(self):
 
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        """Cancel the inhibition for the current cookie."""
 
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        d = defer.Deferred()
 
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        self.proxy.Uninhibit(self.cookie,
 
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                             reply_handler=lambda: d.callback(self),
 
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                             error_handler=d.errback)
 
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        return d
 
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def inhibit_logout_suspend(reason):
 
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    """Inhibit the suspend and logout. The result can be cancelled."""
 
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    return Inhibitor().inhibit(INHIBIT_LOGOUT_SUSPEND, reason)