[gnome-shell/wip/rstrode/rhel-7.9: 40/86] main: Show a warning when gdm is missing

[Ray Strode <halfline src gnome org>]

commit 8d3dd1a02f24c99fdf24b6de9e100392a4f8d472
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 8 13:33:58 2013 -0400

    main: Show a warning when gdm is missing
    
    If we are not running under gdm, some functionaliy (such as
    the lock screen) does not work, and we should inform the
    user about this.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=701212

 js/ui/main.js | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/js/ui/main.js b/js/ui/main.js
index 00e8db54d0..194bb5c508 100644
--- a/js/ui/main.js
+++ b/js/ui/main.js
@@ -252,6 +252,13 @@ function _initializeUI() {
             notify(_('Logged in as a privileged user'),
                    _('Running a session as a privileged user should be avoided for security reasons. If 
possible, you should log in as a normal user.'));
         }
+
+        if (sessionMode.currentMode !== 'gdm' &&
+            sessionMode.currentMode !== 'initial-setup' &&
+            screenShield === null) {
+            notify(_('Screen Lock disabled'),
+                   _('Screen Locking requires the GNOME display manager.'));
+        }
     });
 }