[25458] in Source-Commits
Re: /svn/athena r24816 - trunk/debathena/config/gdm-config/debian
daemon@ATHENA.MIT.EDU (Evan Broder)
Wed Mar 2 19:40:50 2011
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In-Reply-To: <alpine.DEB.1.10.1103021933260.19401@lunatique.mit.edu>
From: Evan Broder <evan@ebroder.net>
Date: Wed, 2 Mar 2011 16:40:23 -0800
Message-ID: <AANLkTindM+CeXp15SHww8xQXN82OnVOvk0nvkKRDsZ6K@mail.gmail.com>
To: Geoffrey Thomas <geofft@mit.edu>
Cc: Jonathan D Reed <jdreed@mit.edu>, source-commits@mit.edu
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You don't need to keep references around to either. They'll both have
references held by various bus connections that persist for the
duration of the script's execution.
On Wed, Mar 2, 2011 at 4:34 PM, Geoffrey Thomas <geofft@mit.edu> wrote:
> I would think you want to keep references around to the DBusMainLoop and
> Branding objects you create, but it seems to be have been working fine...
> ACK r24816-r24821. (Mostly because I was going to read the code anyway.)
>
> --
> Geoffrey Thomas
> geofft@mit.edu
>
> On Sun, 15 Aug 2010, Jonathan D Reed wrote:
>
>> Author: jdreed
>> Date: 2010-08-15 17:50:05 -0400 (Sun, 15 Aug 2010)
>> New Revision: 24816
>>
>> Added:
>> trunk/debathena/config/gdm-config/debian/debathena-branding
>> trunk/debathena/config/gdm-config/debian/debathena-branding.desktop
>> Log:
>> Add debathena-branding widget
>>
>> Added: trunk/debathena/config/gdm-config/debian/debathena-branding
>> ===================================================================
>> --- trunk/debathena/config/gdm-config/debian/debathena-branding
>> (rev 0)
>> +++ trunk/debathena/config/gdm-config/debian/debathena-branding 2010-08-15
>> 21:50:05 UTC (rev 24816)
>> @@ -0,0 +1,107 @@
>> +#!/usr/bin/python -Wall
>> +
>> +import dbus
>> +import dbus.mainloop.glib
>> +import gtk
>> +import gobject
>> +#import time
>> +import os
>> +#import sys
>> +import subprocess
>> +#from optparse import OptionParser
>> +
>> +SM_DBUS_NAME = "org.gnome.SessionManager"
>> +SM_DBUS_PATH = "/org/gnome/SessionManager"
>> +SM_DBUS_INTERFACE = "org.gnome.SessionManager"
>> +SM_CLIENT_DBUS_INTERFACE = "org.gnome.SessionManager.ClientPrivate"
>> +APP_ID = "debathena-branding"
>> +
>> +class Branding:
>> + def __init__(self):
>> + self.sessionEnding = False
>> + self.sessionBus = dbus.SessionBus()
>> + try:
>> + self.register_with_sm()
>> + self.init_sm_client()
>> + except:
>> + print "Warning: Cannot register with session manager."
>> +
>> + self.welcomeWindow = gtk.Window(gtk.WINDOW_TOPLEVEL)
>> + self.welcomeLabel = gtk.Label()
>> + self.welcomeLabel.set_justify(gtk.JUSTIFY_CENTER)
>> + self.welcomeLabel.set_padding(2,2)
>> + self.welcomeLabel.set_markup('<span size="xx-large">Welcome to
>> Debathena</span>')
>> + self.welcomeWindow.set_position(gtk.WIN_POS_CENTER)
>> + self.welcomeWindow.add(self.welcomeLabel)
>> + self.welcomeWindow.set_decorated(False)
>> + x, y = self.welcomeWindow.get_position()
>> + self.welcomeWindow.move(x, y - 200)
>> + self.brandingWindow = gtk.Window(gtk.WINDOW_TOPLEVEL)
>> + self.brandingLabel = gtk.Label()
>> + self.brandingLabel.set_justify(gtk.JUSTIFY_CENTER)
>> + self.brandingLabel.set_padding(2,2)
>> + self.brandingWindow.add(self.brandingLabel)
>> + # Turn off all window decorations for the login screen.
>> + self.brandingWindow.set_decorated(False)
>> + try:
>> + metapackage = subprocess.Popen(["machtype", "-L"],
>> stdout=subprocess.PIPE).communicate()[0].rstrip()
>> + except OSError:
>> + metapackage = '(error)'
>> + try:
>> + baseos = subprocess.Popen(["machtype", "-E"],
>> stdout=subprocess.PIPE).communicate()[0].rstrip()
>> + except OSError:
>> + baseos = '(error)'
>> + self.brandingLabel.set_text(metapackage + "\n" + baseos)
>> + self.brandingWindow.set_gravity(gtk.gdk.GRAVITY_SOUTH_EAST)
>> +
>> self.brandingWindow.set_size_request(self.brandingLabel.get_property('width-chars'),-1)
>> + width, height = self.brandingWindow.get_size()
>> + self.brandingWindow.move(gtk.gdk.screen_width(),
>> + gtk.gdk.screen_height())
>> + self.brandingWindow.show_all()
>> + self.welcomeWindow.show_all()
>> +
>> + # Connect to the session manager, and register our client.
>> + def register_with_sm(self):
>> + proxy = self.sessionBus.get_object(SM_DBUS_NAME, SM_DBUS_PATH)
>> + sm = dbus.Interface(proxy, SM_DBUS_INTERFACE)
>> + autostart_id = os.getenv("DESKTOP_AUTOSTART_ID", default="")
>> + self.smClientId = sm.RegisterClient(APP_ID, autostart_id)
>> +
>> + # Set up to handle signals from the session manager.
>> + def init_sm_client(self):
>> + proxy = self.sessionBus.get_object(SM_DBUS_NAME, self.smClientId)
>> + self.smClient = dbus.Interface(proxy, SM_CLIENT_DBUS_INTERFACE)
>> + self.smClient.connect_to_signal("QueryEndSession",
>> + self.sm_on_QueryEndSession)
>> + self.smClient.connect_to_signal("EndSession",
>> self.sm_on_EndSession)
>> + self.smClient.connect_to_signal("CancelEndSession",
>> + self.sm_on_CancelEndSession)
>> + self.smClient.connect_to_signal("Stop", self.sm_on_Stop)
>> +
>> + # Here on a QueryEndSession signal from the session manager.
>> + def sm_on_QueryEndSession(self, flags):
>> + self.sessionEnding = True
>> + # Response args: is_ok, reason.
>> + self.smClient.EndSessionResponse(True, "")
>> +
>> + # Here on an EndSession signal from the session manager.
>> + def sm_on_EndSession(self, flags):
>> + self.sessionEnding = True
>> + # Response args: is_ok, reason.
>> + self.smClient.EndSessionResponse(True, "")
>> +
>> + # Here on a CancelEndSession signal from the session manager.
>> + def sm_on_CancelEndSession(self):
>> + self.sessionEnding = False
>> +
>> + # Here on a Stop signal from the session manager.
>> + def sm_on_Stop(self):
>> + gtk.main_quit()
>> +
>> +def main():
>> + dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
>> + Branding()
>> + gtk.main()
>> +
>> +if __name__ == '__main__':
>> + main()
>>
>>
>> Property changes on:
>> trunk/debathena/config/gdm-config/debian/debathena-branding
>> ___________________________________________________________________
>> Added: svn:executable
>> + *
>>
>> Added: trunk/debathena/config/gdm-config/debian/debathena-branding.desktop
>> ===================================================================
>> --- trunk/debathena/config/gdm-config/debian/debathena-branding.desktop
>> (rev 0)
>> +++ trunk/debathena/config/gdm-config/debian/debathena-branding.desktop
>> 2010-08-15 21:50:05 UTC (rev 24816)
>> @@ -0,0 +1,6 @@
>> +[Desktop Entry]
>> +Type=Application
>> +Name=Debathena branding widget
>> +TryExec=/usr/lib/debathena-branding/debathena-branding
>> +Exec=/usr/lib/debathena-branding/debathena-branding
>> +OnlyShowIn=GNOME;
>>
>>
>
