[mutter/gbsneto/actor-meta-improvements: 1/4] clutter/actor-meta: Add a new 'set_enabled' vfunc

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit ac52631e8a970e0f66c9b724575fcf0ba49f29e2
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Wed Apr 8 11:56:08 2020 -0300

    clutter/actor-meta: Add a new 'set_enabled' vfunc
    
    Various subclasses of ClutterActorMeta need to reacto to being
    disabled. Right now, however, the only way to do that is by
    overriding GObject's 'notify' vfunc, and doing a string comparison
    against "enabled".
    
    Add a new vfunc to ClutterActorMeta in order to replace this bad
    practice.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1187

 clutter/clutter/clutter-actor-meta.c | 20 ++++++++++++++------
 clutter/clutter/clutter-actor-meta.h |  4 +++-
 2 files changed, 17 insertions(+), 7 deletions(-)
---
diff --git a/clutter/clutter/clutter-actor-meta.c b/clutter/clutter/clutter-actor-meta.c
index f90c44e9d..f8811bea8 100644
--- a/clutter/clutter/clutter-actor-meta.c
+++ b/clutter/clutter/clutter-actor-meta.c
@@ -105,6 +105,18 @@ clutter_actor_meta_real_set_actor (ClutterActorMeta *meta,
                                                meta);
 }
 
+static void
+clutter_actor_meta_real_set_enabled (ClutterActorMeta *meta,
+                                     gboolean          is_enabled)
+{
+  g_warn_if_fail (!meta->priv->actor ||
+                  !CLUTTER_ACTOR_IN_PAINT (meta->priv->actor));
+
+  meta->priv->is_enabled = is_enabled;
+
+  g_object_notify_by_pspec (G_OBJECT (meta), obj_props[PROP_ENABLED]);
+}
+
 static void
 clutter_actor_meta_set_property (GObject      *gobject,
                                  guint         prop_id,
@@ -176,6 +188,7 @@ clutter_actor_meta_class_init (ClutterActorMetaClass *klass)
   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 
   klass->set_actor = clutter_actor_meta_real_set_actor;
+  klass->set_enabled = clutter_actor_meta_real_set_enabled;
 
   /**
    * ClutterActorMeta:actor:
@@ -297,17 +310,12 @@ clutter_actor_meta_set_enabled (ClutterActorMeta *meta,
 {
   g_return_if_fail (CLUTTER_IS_ACTOR_META (meta));
 
-  g_warn_if_fail (!meta->priv->actor ||
-                  !CLUTTER_ACTOR_IN_PAINT (meta->priv->actor));
-
   is_enabled = !!is_enabled;
 
   if (meta->priv->is_enabled == is_enabled)
     return;
 
-  meta->priv->is_enabled = is_enabled;
-
-  g_object_notify_by_pspec (G_OBJECT (meta), obj_props[PROP_ENABLED]);
+  CLUTTER_ACTOR_META_GET_CLASS (meta)->set_enabled (meta, is_enabled);
 }
 
 /**
diff --git a/clutter/clutter/clutter-actor-meta.h b/clutter/clutter/clutter-actor-meta.h
index ecc9523a9..27517fadf 100644
--- a/clutter/clutter/clutter-actor-meta.h
+++ b/clutter/clutter/clutter-actor-meta.h
@@ -87,6 +87,9 @@ struct _ClutterActorMetaClass
   void (* set_actor) (ClutterActorMeta *meta,
                       ClutterActor     *actor);
 
+  void (* set_enabled) (ClutterActorMeta *meta,
+                        gboolean          is_enabled);
+
   /*< private >*/
   void (* _clutter_meta1) (void);
   void (* _clutter_meta2) (void);
@@ -94,7 +97,6 @@ struct _ClutterActorMetaClass
   void (* _clutter_meta4) (void);
   void (* _clutter_meta5) (void);
   void (* _clutter_meta6) (void);
-  void (* _clutter_meta7) (void);
 };
 
 CLUTTER_EXPORT