if (PSPPIRE_DIALOG_ACTION_CLASS (psppire_dialog_action_sort_parent_class)->activate)
PSPPIRE_DIALOG_ACTION_CLASS (psppire_dialog_action_sort_parent_class)->activate (pda);
if (PSPPIRE_DIALOG_ACTION_CLASS (psppire_dialog_action_sort_parent_class)->activate)
PSPPIRE_DIALOG_ACTION_CLASS (psppire_dialog_action_sort_parent_class)->activate (pda);