[gnome-tweak-tool] top_bar: Only show this page if GNOME Shell is running

[Jeremy Bicha <jbicha src gnome org>]

commit f729e5a0c26b4da538647154c6f858a61962551a
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sun Jun 11 19:37:20 2017 -0400

    top_bar: Only show this page if GNOME Shell is running

 gtweak/tweaks/tweak_group_top_bar.py |   15 ++++++++-------
 1 files changed, 8 insertions(+), 7 deletions(-)
---
diff --git a/gtweak/tweaks/tweak_group_top_bar.py b/gtweak/tweaks/tweak_group_top_bar.py
index 988b8ea..62e1769 100644
--- a/gtweak/tweaks/tweak_group_top_bar.py
+++ b/gtweak/tweaks/tweak_group_top_bar.py
@@ -34,6 +34,7 @@ class ApplicationMenuTweak(GetterSetterSwitchTweak):
                                  name,
                                  "org.gnome.desktop.wm.preferences",
                                  "button-layout",
+                                 loaded=_shell_loaded,
                                  **options)
 
     def get_active(self):
@@ -65,12 +66,12 @@ class ApplicationMenuTweak(GetterSetterSwitchTweak):
 TWEAK_GROUPS = [
     ListBoxTweakGroup(_("Top Bar"),
         ApplicationMenuTweak(),
-        Title(_("Clock"),""),
-        GSettingsSwitchTweak(_("Date"),"org.gnome.desktop.interface", "clock-show-date"),
-        GSettingsSwitchTweak(_("Seconds"), "org.gnome.desktop.interface", "clock-show-seconds"),
-        Title(_("Calendar"),""),
-        GSettingsSwitchTweak(_("Week Numbers"),"org.gnome.desktop.calendar", "show-weekdate"),
-        Title(_("Power"),""),
-        GSettingsSwitchTweak(_("Battery Percentage"),"org.gnome.desktop.interface", 
"show-battery-percentage"),
+        Title(_("Clock"),"", loaded=_shell_loaded),
+        GSettingsSwitchTweak(_("Date"),"org.gnome.desktop.interface", "clock-show-date", 
loaded=_shell_loaded),
+        GSettingsSwitchTweak(_("Seconds"), "org.gnome.desktop.interface", "clock-show-seconds", 
loaded=_shell_loaded),
+        Title(_("Calendar"),"", loaded=_shell_loaded),
+        GSettingsSwitchTweak(_("Week Numbers"),"org.gnome.desktop.calendar", "show-weekdate", 
loaded=_shell_loaded),
+        Title(_("Power"),"", loaded=_shell_loaded),
+        GSettingsSwitchTweak(_("Battery Percentage"),"org.gnome.desktop.interface", 
"show-battery-percentage", loaded=_shell_loaded),
     )
 ]