+static void
+psppire_data_window_finalize (GObject *object)
+{
+ PsppireDataWindow *dw = PSPPIRE_DATA_WINDOW (object);
+
+ if (dw->dataset)
+ {
+ struct dataset *dataset = dw->dataset;
+ struct session *session = dataset_session (dataset);
+
+ dw->dataset = NULL;
+
+ dataset_set_callbacks (dataset, NULL, NULL);
+ session_set_active_dataset (session, NULL);
+ dataset_destroy (dataset);
+ }
+
+ if (G_OBJECT_CLASS (parent_class)->finalize)
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+