Fix problem with gtkbuild (loader has been including duplicated childs)

[anmaped]

diff --git a/src/gtknodeview.c b/src/gtknodeview.c
index a176263..67829ce 100644
--- a/src/gtknodeview.c
+++ b/src/gtknodeview.c
@@ -1530,7 +1530,7 @@ gboolean
 gtk_nodes_node_view_load (GtkNodesNodeView *node_view,
                           const gchar      *filename)
 {
-   GtkBuilder* builder;
+  GtkBuilder* builder;
   GError *error = NULL;
   GSList *l;

@@ -1555,19 +1555,22 @@ gtk_nodes_node_view_load (GtkNodesNodeView *node_view,

   l = gtk_builder_get_objects(builder);

-   while (l)
+  while (l)
     {
-        GObject *n = l->data;
+      GObject *n = l->data;

-      l = l->next;
-        gtk_container_add(GTK_CONTAINER(node_view), GTK_WIDGET(n));
-    }
+      l = l->next;
+      if (gtk_widget_get_parent(GTK_WIDGET(n)) == NULL)
+        {
+          gtk_container_add(GTK_CONTAINER(node_view), GTK_WIDGET(n));
+        }
+    }

-   gtk_builder_connect_signals_full (builder,
-                                    gtk_nodes_node_view_connection_mapper,
-                                    node_view);
+    gtk_builder_connect_signals_full (builder,
+                                      gtk_nodes_node_view_connection_mapper,
+                                      node_view);

-   gtk_widget_show_all(GTK_WIDGET (node_view));
+  gtk_widget_show_all(GTK_WIDGET (node_view));

   return TRUE;
 }

[anmaped]

For python, it does the trick.

class (...)
    def do_add_child(self, builder, child, t):
        if child.get_name() != "GtkComboBoxText":      # just an example with a ComboBox Widget
            self.add(child)

    def do_get_internal_child(self, builder, childname):
        if childname == "combobox":                    # use with '<child internal-child="combobox"></child>'
            return self.combobox;
        else:
            return None

[aluntzer]

thank you, fixed!