Add meta_activate_session

This will be used on startup to switch to the newly activated session.

src/core/main.c

@@ -502,6 +502,32 @@ meta_register_with_session (void)
   g_free (opt_client_id);
 }
 
+/**
+ * meta_activate_session:
+ *
+ * Tells mutter to activate the session. When mutter is a
+ * Wayland compositor, this tells logind to switch over to
+ * the new session.
+ */
+gboolean
+meta_activate_session (void)
+{
+  if (meta_is_wayland_compositor ())
+    {
+      MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+      GError *error = NULL;
+
+      if (!meta_wayland_compositor_activate_session (compositor, &error))
+        {
+          g_warning ("Could not activate session: %s\n", error->message);
+          g_error_free (error);
+          return FALSE;
+        }
+    }
+
+  return TRUE;
+}
+
 /**
  * meta_run: (skip)
  *

src/meta/main.h

@@ -28,6 +28,7 @@ GOptionContext *meta_get_option_context     (void);
 void            meta_init                   (void);
 int             meta_run                    (void);
 void            meta_register_with_session  (void);
+gboolean        meta_activate_session       (void);
 gboolean        meta_get_replace_current_wm (void);  /* Actually defined in util.c */
 
 void            meta_set_wm_name              (const char *wm_name);

src/wayland/meta-wayland.c

@@ -734,3 +734,18 @@ meta_wayland_compositor_activate_vt (MetaWaylandCompositor  *compositor,
       return TRUE;
     }
 }
+
+gboolean
+meta_wayland_compositor_activate_session (MetaWaylandCompositor  *compositor,
+                                          GError                **error)
+{
+  if (compositor->launcher)
+    {
+      return meta_launcher_activate_vt (compositor->launcher, -1, error);
+    }
+  else
+    {
+      g_debug ("Ignoring activate_session, not running as display server");
+      return TRUE;
+    }
+}

src/wayland/meta-wayland.h

@@ -46,6 +46,8 @@ void                    meta_wayland_compositor_paint_finished  (MetaWaylandComp
 gboolean                meta_wayland_compositor_activate_vt     (MetaWaylandCompositor  *compositor,
                                                                  int                     vt,
                                                                  GError                **error);
+gboolean                meta_wayland_compositor_activate_session (MetaWaylandCompositor  *compositor,
+                                                                  GError                **error);
 
 #endif
 

src/wayland/meta-weston-launch.c

@@ -399,7 +399,7 @@ meta_launcher_free (MetaLauncher *launcher)
 
 gboolean
 meta_launcher_activate_vt (MetaLauncher  *launcher,
-			   int            vt,
+			   signed char    vt,
 			   GError       **error)
 {
   struct weston_launcher_activate_vt message;

src/wayland/meta-weston-launch.h

@@ -29,7 +29,7 @@ MetaLauncher     *meta_launcher_new                     (void);
 void              meta_launcher_free                    (MetaLauncher  *self);
 
 gboolean          meta_launcher_activate_vt             (MetaLauncher  *self,
-							 int            number,
+							 signed char    vt,
 							 GError       **error);
 
 gboolean          meta_launcher_set_drm_fd              (MetaLauncher  *self,