[gtk+] builder: Convert to g_object_notify_by_pspec

[Matthias Clasen <matthiasc src gnome org>]

commit 14c0ed8bae2b83b4da97f443f188970c3a9a1707
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 6 15:04:19 2015 -0400

    builder: Convert to g_object_notify_by_pspec
    
    This avoids pspec lookup overhead in g_object_notify.

 gtk/gtkbuilder.c |   20 ++++++++++++--------
 1 files changed, 12 insertions(+), 8 deletions(-)
---
diff --git a/gtk/gtkbuilder.c b/gtk/gtkbuilder.c
index 02c2cda..5849cbe 100644
--- a/gtk/gtkbuilder.c
+++ b/gtk/gtkbuilder.c
@@ -242,8 +242,11 @@ static GType gtk_builder_real_get_type_from_name (GtkBuilder  *builder,
 enum {
   PROP_0,
   PROP_TRANSLATION_DOMAIN,
+  LAST_PROP
 };
 
+static GParamSpec *builder_props[LAST_PROP];
+
 struct _GtkBuilderPrivate
 {
   gchar *domain;
@@ -283,13 +286,14 @@ gtk_builder_class_init (GtkBuilderClass *klass)
   *
   * Since: 2.12
   */
-  g_object_class_install_property (gobject_class,
-                                   PROP_TRANSLATION_DOMAIN,
-                                   g_param_spec_string ("translation-domain",
-                                                        P_("Translation Domain"),
-                                                        P_("The translation domain used by gettext"),
-                                                        NULL,
-                                                        GTK_PARAM_READWRITE));
+  builder_props[PROP_TRANSLATION_DOMAIN] =
+      g_param_spec_string ("translation-domain",
+                           P_("Translation Domain"),
+                           P_("The translation domain used by gettext"),
+                           NULL,
+                           GTK_PARAM_READWRITE);
+
+  g_object_class_install_properties (gobject_class, LAST_PROP, builder_props);
 }
 
 static void
@@ -1496,7 +1500,7 @@ gtk_builder_set_translation_domain (GtkBuilder  *builder,
   g_free (builder->priv->domain);
   builder->priv->domain = new_domain;
 
-  g_object_notify (G_OBJECT (builder), "translation-domain");
+  g_object_notify_by_pspec (G_OBJECT (builder), builder_props[PROP_TRANSLATION_DOMAIN]);
 }
 
 /**