[gnome-software] Show a restart-required notification after installing layered packages

[Kalev Lember <klember src gnome org>]

commit 02465a09b5ce8be21c2101944c65bbfc2629ab31
Author: Kalev Lember <klember redhat com>
Date:   Sat Feb 23 21:24:43 2019 +0100

    Show a restart-required notification after installing layered packages

 src/gs-common.c | 26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)
---
diff --git a/src/gs-common.c b/src/gs-common.c
index 151d0627..06577994 100644
--- a/src/gs-common.c
+++ b/src/gs-common.c
@@ -1,7 +1,7 @@
 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
  *
  * Copyright (C) 2013-2015 Richard Hughes <richard hughsie com>
- * Copyright (C) 2016-2018 Kalev Lember <klember redhat com>
+ * Copyright (C) 2016-2019 Kalev Lember <klember redhat com>
  *
  * SPDX-License-Identifier: GPL-2.0+
  */
@@ -129,20 +129,36 @@ gs_app_notify_installed (GsApp *app)
                /* TRANSLATORS: this is the summary of a notification that an application
                 * has been successfully installed */
                summary = g_strdup_printf (_("%s is now installed"), gs_app_get_name (app));
-               /* TRANSLATORS: this is the body of a notification that an application
-                * has been successfully installed */
-               body = _("Application is ready to be used.");
+               if (gs_app_has_quirk (app, GS_APP_QUIRK_NEEDS_REBOOT)) {
+                       /* TRANSLATORS: an application has been installed, but
+                        * needs a reboot to complete the installation */
+                       body = _("A restart is required for the changes to take effect.");
+               } else {
+                       /* TRANSLATORS: this is the body of a notification that an application
+                        * has been successfully installed */
+                       body = _("Application is ready to be used.");
+               }
                break;
        default:
                /* TRANSLATORS: this is the summary of a notification that a component
                 * has been successfully installed */
                summary = g_strdup_printf (_("%s is now installed"), gs_app_get_name (app));
+               if (gs_app_has_quirk (app, GS_APP_QUIRK_NEEDS_REBOOT)) {
+                       /* TRANSLATORS: an application has been installed, but
+                        * needs a reboot to complete the installation */
+                       body = _("A restart is required for the changes to take effect.");
+               }
                break;
        }
        n = g_notification_new (summary);
        if (body != NULL)
                g_notification_set_body (n, body);
-       if (gs_app_get_kind (app) == AS_APP_KIND_DESKTOP) {
+
+       if (gs_app_has_quirk (app, GS_APP_QUIRK_NEEDS_REBOOT)) {
+               /* TRANSLATORS: button text */
+               g_notification_add_button_with_target (n, _("Restart"),
+                                                      "app.reboot", NULL);
+       } else if (gs_app_get_kind (app) == AS_APP_KIND_DESKTOP) {
                /* TRANSLATORS: this is button that opens the newly installed application */
                g_notification_add_button_with_target (n, _("Launch"),
                                                       "app.launch", "s",