[gnome-control-center/benzea/fix-single-display-405: 12/14] display: Update apply button when switching output in "single" mode

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 75bf1b8cd1a317fdbe26e978d1c351b5b05b8285
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;