[gnome-flashback] monitor-manager: refuse to activate closed laptop panels

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 3e32db575c2cdb195278ff7134aef04227860516
Author: Rui Matos <tiagomatos gmail com>
Date:   Tue Nov 14 18:10:55 2017 +0100

    monitor-manager: refuse to activate closed laptop panels
    
    There's no good reason to allow this and it allows g-c-c to properly
    show that such a configuration doesn't work.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790336

 backends/gf-monitor-manager.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/backends/gf-monitor-manager.c b/backends/gf-monitor-manager.c
index ee6ce55..cdc7e05 100644
--- a/backends/gf-monitor-manager.c
+++ b/backends/gf-monitor-manager.c
@@ -254,6 +254,13 @@ gf_monitor_manager_is_config_applicable (GfMonitorManager  *manager,
               return FALSE;
             }
 
+          if (gf_monitor_is_laptop_panel (monitor) &&
+              gf_monitor_manager_is_lid_closed (manager))
+            {
+              g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
+                           "Refusing to activate a closed laptop panel");
+              return FALSE;
+            }
         }
     }