public boolean isDrawBarOutline() {
        return this.drawBarOutline;
    }

    /**
     * Sets the flag that controls whether or not bar outlines are drawn and
     * sends a {@link RendererChangeEvent} to all registered listeners.
     *
     * @param draw  the flag.
     *
     * @see #isDrawBarOutline()
     */
    public void setDrawBarOutline(boolean draw) {
        this.drawBarOutline = draw;
        fireChangeEvent();