doPrepare();
if (isVisible()) { doPrepare(); }
    public void actionPerformed(ActionEvent e) {        String cmd = e.getActionCommand();        if (cmd == RedrawCmd) {            setList(null);            doPrepare();        } else if (cmd == ConfigCmd) {            if (configWindowSupport == null) {                configWindowSupport = new WindowSupport(new VPFConfig(this), "Configure " + getName() + " Features");            } else {                configWindowSupport.setTitle(getName());            }            configWindowSupport.displayInWindow();        } else {            super.actionPerformed(e);        }    }