[gnome-control-center/benzea/fix-single-display-405: 2/4] display: Update apply button when switching output in "single" mode

[Benjamin Berg <bberg src gnome org>]

commit f285f0fea0455c75828f0a74c932cfd20d3c0db3
Author: Benjamin Berg <bberg redhat com>
Date:   Thu Mar 7 18:56:13 2019 +0100

    display: Update apply button when switching output in "single" mode
    
    While the configuration was updated, the apply button was not synced.
    This meant users could not switch the active monitor properly.
    
    Fixes #405

 panels/display/cc-display-panel.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/panels/display/cc-display-panel.c b/panels/display/cc-display-panel.c
index 4b7cd2359..f4af1b051 100644
--- a/panels/display/cc-display-panel.c
+++ b/panels/display/cc-display-panel.c
@@ -635,6 +635,8 @@ set_current_output (CcDisplayPanel   *panel,
         cc_display_monitor_set_active (output, TRUE);
       if (panel->current_output)
         cc_display_monitor_set_active (panel->current_output, FALSE);
+
+      update_apply_button (panel);
     }
 
   panel->current_output = output;