[libgda] gda-tree: ported to G_DEFINE

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 400dc4231936427539fb165f778e0c968858f000
Author: Daniel Espinosa <esodan gmail com>
Date:   Wed Sep 19 14:27:01 2018 -0500

    gda-tree: ported to G_DEFINE

 libgda/gda-tree.c | 47 ++---------------------------------------------
 1 file changed, 2 insertions(+), 45 deletions(-)
---
diff --git a/libgda/gda-tree.c b/libgda/gda-tree.c
index 35ac7be78..f493ecab6 100644
--- a/libgda/gda-tree.c
+++ b/libgda/gda-tree.c
@@ -33,7 +33,7 @@ typedef struct {
        GSList      *managers; /* list of GdaTreeManager */
        GdaTreeNode *root;
 } GdaTreePrivate;
-#define gda_tree_get_instance_private(obj) G_TYPE_INSTANCE_GET_PRIVATE(obj, GDA_TYPE_TREE, GdaTreePrivate)
+G_DEFINE_TYPE_WITH_PRIVATE (GdaTree, gda_tree, G_TYPE_OBJECT)
 
 static void gda_tree_class_init (GdaTreeClass *klass);
 static void gda_tree_init       (GdaTree *tree);
@@ -73,8 +73,6 @@ enum {
        PROP_IS_LIST
 };
 
-static GObjectClass *parent_class = NULL;
-
 /*
  * GdaTree class implementation
  * @klass:
@@ -84,10 +82,6 @@ gda_tree_class_init (GdaTreeClass *klass)
 {
        GObjectClass *object_class = G_OBJECT_CLASS (klass);
 
-       parent_class = g_type_class_peek_parent (klass);
-
-       g_type_class_add_private (object_class, sizeof (GdaTreePrivate));
-
        /* signals */
        /**
         * GdaTree::node-changed:
@@ -207,7 +201,7 @@ gda_tree_dispose (GObject *object)
                g_slist_free (priv->managers);
        }
        /* chain to parent class */
-       parent_class->dispose (object);
+       G_OBJECT_CLASS (gda_tree_parent_class)->dispose (object);
 }
 
 
@@ -220,43 +214,6 @@ GQuark gda_tree_error_quark (void)
         return quark;
 }
 
-/**
- * gda_tree_get_type:
- * 
- * Registers the #GdaTree class on the GLib type system.
- * 
- * Returns: the GType identifying the class.
- *
- * Since: 4.2
- */
-GType
-gda_tree_get_type (void)
-{
-        static GType type = 0;
-
-        if (G_UNLIKELY (type == 0)) {
-                static GMutex registering;
-                static const GTypeInfo info = {
-                        sizeof (GdaTreeClass),
-                        (GBaseInitFunc) NULL,
-                        (GBaseFinalizeFunc) NULL,
-                        (GClassInitFunc) gda_tree_class_init,
-                        NULL,
-                        NULL,
-                        sizeof (GdaTree),
-                        0,
-                        (GInstanceInitFunc) gda_tree_init,
-                        0
-                };
-
-                g_mutex_lock (&registering);
-                if (type == 0)
-                        type = g_type_register_static (G_TYPE_OBJECT, "GdaTree", &info, 0);
-                g_mutex_unlock (&registering);
-        }
-        return type;
-}
-
 static void
 gda_tree_set_property (GObject *object,
                         guint param_id,