[mutter] MetaWaylandSurface: Make it a GObject

[Jonas Ådahl <jadahl src gnome org>]

commit cd1ce2cb0a4e84d5d6a5c8329bcc71929e2f2e31
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Jul 8 11:21:23 2015 +0800

    MetaWaylandSurface: Make it a GObject
    
    This way we can add signals and weak references without relying on
    wl_signal, wl_listener etc.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=744932

 src/wayland/meta-wayland-surface.c |   18 ++++++++++++++++--
 src/wayland/meta-wayland-surface.h |    8 ++++++++
 2 files changed, 24 insertions(+), 2 deletions(-)
---
diff --git a/src/wayland/meta-wayland-surface.c b/src/wayland/meta-wayland-surface.c
index 863a3ba..2a9df0a 100644
--- a/src/wayland/meta-wayland-surface.c
+++ b/src/wayland/meta-wayland-surface.c
@@ -68,6 +68,10 @@ typedef struct
   struct wl_listener sibling_destroy_listener;
 } MetaWaylandSubsurfacePlacementOp;
 
+GType meta_wayland_surface_get_type (void) G_GNUC_CONST;
+
+G_DEFINE_TYPE (MetaWaylandSurface, meta_wayland_surface, G_TYPE_OBJECT);
+
 int
 meta_wayland_surface_set_role (MetaWaylandSurface    *surface,
                                MetaWaylandSurfaceRole role,
@@ -968,7 +972,7 @@ wl_surface_destructor (struct wl_resource *resource)
   if (surface->gtk_surface)
     wl_resource_destroy (surface->gtk_surface);
 
-  g_slice_free (MetaWaylandSurface, surface);
+  g_object_unref (surface);
 
   meta_wayland_compositor_repick (compositor);
 }
@@ -979,7 +983,7 @@ meta_wayland_surface_create (MetaWaylandCompositor *compositor,
                              struct wl_resource    *compositor_resource,
                              guint32                id)
 {
-  MetaWaylandSurface *surface = g_slice_new0 (MetaWaylandSurface);
+  MetaWaylandSurface *surface = g_object_new (META_TYPE_WAYLAND_SURFACE, NULL);
 
   surface->compositor = compositor;
   surface->scale = 1;
@@ -2290,3 +2294,13 @@ meta_wayland_surface_get_toplevel_window (MetaWaylandSurface *surface)
 
   return NULL;
 }
+
+static void
+meta_wayland_surface_init (MetaWaylandSurface *surface)
+{
+}
+
+static void
+meta_wayland_surface_class_init (MetaWaylandSurfaceClass *klass)
+{
+}
diff --git a/src/wayland/meta-wayland-surface.h b/src/wayland/meta-wayland-surface.h
index d752381..25debef 100644
--- a/src/wayland/meta-wayland-surface.h
+++ b/src/wayland/meta-wayland-surface.h
@@ -31,6 +31,12 @@
 #include "meta-wayland-types.h"
 #include "meta-surface-actor.h"
 
+#define META_TYPE_WAYLAND_SURFACE (meta_wayland_surface_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandSurface,
+                      meta_wayland_surface,
+                      META, WAYLAND_SURFACE,
+                      GObject);
+
 struct _MetaWaylandSerial {
   gboolean set;
   uint32_t value;
@@ -89,6 +95,8 @@ struct _MetaWaylandDragDestFuncs
 
 struct _MetaWaylandSurface
 {
+  GObject parent;
+
   /* Generic stuff */
   struct wl_resource *resource;
   MetaWaylandCompositor *compositor;