[gnome-boxes/wip/run-in-bg] libvirt-machine-properties: Verify that our Flatpak is authorized to run in bg

[Felipe Borges <felipeborges src gnome org>]

commit 046bd92ef6258ea006826c5b2a6246ee93b67c71
Author: Felipe Borges <felipeborges gnome org>
Date:   Tue Dec 8 11:37:51 2020 +0100

    libvirt-machine-properties: Verify that our Flatpak is authorized to run in bg
    
    Otherwise we shouldn't let users set VMs to "Run in background".
    
    See #379

 src/libvirt-machine-properties.vala | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
---
diff --git a/src/libvirt-machine-properties.vala b/src/libvirt-machine-properties.vala
index 2bd89153..270acaca 100644
--- a/src/libvirt-machine-properties.vala
+++ b/src/libvirt-machine-properties.vala
@@ -760,9 +760,32 @@ private void on_vcpus_changed (Boxes.Property property, int vcpus) {
                                               _("“%s” will be paused automatically to save 
resources.").printf (name);
         });
 
+        toggle.notify["active"].connect (on_run_in_bg);
+
         return box;
     }
 
+    private async void on_run_in_bg () {
+        if (!machine.run_in_bg)
+            return;
+
+        yield Portals.get_default ().request_to_run_in_background (
+        (response, results) => {
+            if (response != 0) {
+                try {
+                    machine.run_in_bg = false;
+
+                    var msg = _("Boxes is not authorized to run in the background");
+                    machine.window.notificationbar.display_error (msg);
+                } catch (GLib.Error error) {
+                    warning ("Failed to reset VM's run-in-bg setting: %s", error.message);
+                }
+            } else {
+                debug ("User authorized Boxes to run in background");
+            }
+        });
+    }
+
     private Boxes.SnapshotsProperty add_snapshots_property (ref List<Boxes.Property> list) {
         var property = new SnapshotsProperty (machine);
         list.append (property);