From 8f41c6bad88f9c1a9d2016789158dad9f7ef2832 Mon Sep 17 00:00:00 2001
From: Giovanni Campagna <gcampagna@src.gnome.org>
Date: Thu, 3 Jan 2013 01:02:13 +0100
Subject: [PATCH] UnlockDialog: honor
 org.gnome.desktop.screensaver.user-switch-enabled

The screensaver schema has a key that it is meant for locking down
the ability to switch user when the screen is locked, but support
for it was not implemented in the new screenshield.
Fix that by checking the key before creating the button.

https://bugzilla.gnome.org/show_bug.cgi?id=691042
---
 js/ui/unlockDialog.js | 35 +++++++++++++++++++++--------------
 1 file changed, 21 insertions(+), 14 deletions(-)

diff --git a/js/ui/unlockDialog.js b/js/ui/unlockDialog.js
index 794f6cd83..6b6127bbc 100644
--- a/js/ui/unlockDialog.js
+++ b/js/ui/unlockDialog.js
@@ -198,18 +198,23 @@ const UnlockDialog = new Lang.Class({
                                           x_align: St.Align.END,
                                           y_align: St.Align.MIDDLE });
 
-        let otherUserLabel = new St.Label({ text: _("Log in as another user"),
-                                            style_class: 'login-dialog-not-listed-label' });
-        this._otherUserButton = new St.Button({ style_class: 'login-dialog-not-listed-button',
-                                                can_focus: true,
-                                                child: otherUserLabel,
-                                                reactive: true,
-                                                x_align: St.Align.START,
-                                                x_fill: true });
-        this._otherUserButton.connect('clicked', Lang.bind(this, this._otherUserClicked));
-        this.dialogLayout.add(this._otherUserButton,
-                              { x_align: St.Align.START,
-                                x_fill: false });
+        let screenSaverSettings = new Gio.Settings({ schema: 'org.gnome.desktop.screensaver' });
+        if (screenSaverSettings.get_boolean('user-switch-enabled')) {
+            let otherUserLabel = new St.Label({ text: _("Log in as another user"),
+                                                style_class: 'login-dialog-not-listed-label' });
+            this._otherUserButton = new St.Button({ style_class: 'login-dialog-not-listed-button',
+                                                    can_focus: true,
+                                                    child: otherUserLabel,
+                                                    reactive: true,
+                                                    x_align: St.Align.START,
+                                                    x_fill: true });
+            this._otherUserButton.connect('clicked', Lang.bind(this, this._otherUserClicked));
+            this.dialogLayout.add(this._otherUserButton,
+                                  { x_align: St.Align.START,
+                                    x_fill: false });
+        } else {
+            this._otherUserButton = null;
+        }
 
         this._updateSensitivity(true);
 
@@ -231,8 +236,10 @@ const UnlockDialog = new Lang.Class({
         this._promptEntry.reactive = sensitive;
         this._promptEntry.clutter_text.editable = sensitive;
         this._updateOkButtonSensitivity(sensitive && this._promptEntry.text.length > 0);
-        this._otherUserButton.reactive = sensitive;
-        this._otherUserButton.can_focus = sensitive;
+        if (this._otherUserButton) {
+            this._otherUserButton.reactive = sensitive;
+            this._otherUserButton.can_focus = sensitive;
+        }
     },
 
     _updateOkButtonSensitivity: function(sensitive) {