}
        else if (plot instanceof XYPlot) {
            rangeAxis = ((XYPlot) plot).getRangeAxis();
        }

        this.rangeAxisPropertyPanel 
            = DefaultAxisEditor.getInstance(rangeAxis);
        if (this.rangeAxisPropertyPanel != null) {
            this.rangeAxisPropertyPanel.setBorder(
                BorderFactory.createEmptyBorder(2, 2, 2, 2)
            );
            tabs.add(
                localizationResources.getString("Range_Axis"), 
                this.rangeAxisPropertyPanel
            );
        }

//dmo: added this panel for colorbar control. (start dmo additions)
        ColorBar colorBar = null;
        if (plot instanceof ContourPlot) {
            colorBar = ((ContourPlot) plot).getColorBar();
        }

        this.colorBarAxisPropertyPanel 
            = DefaultColorBarEditor.getInstance(colorBar);
        if (this.colorBarAxisPropertyPanel != null) {
            this.colorBarAxisPropertyPanel.setBorder(
                BorderFactory.createEmptyBorder(2, 2, 2, 2)
            );
            tabs.add(
                localizationResources.getString("Color_Bar"), 
                this.colorBarAxisPropertyPanel
            );
        }
//dmo: (end dmo additions)

        tabs.add(localizationResources.getString("Appearance"), appearance);
        panel.add(tabs);

        add(panel);
    }

    /**
     * Returns the current plot insets.
     * 
     * @return The current plot insets.
     */
    public RectangleInsets getPlotInsets() {
        if (this.plotInsets == null) {
            this.plotInsets = new RectangleInsets(0.0, 0.0, 0.0, 0.0);
        }
        return this.plotInsets;
    }

    /**
     * Returns the current background paint.
     * 
     * @return The current background paint.
     */
    public Paint getBackgroundPaint() {
        return this.backgroundPaintSample.getPaint();
    }

    /**
     * Returns the current outline stroke.
     * 
     * @return The current outline stroke.
     */
    public Stroke getOutlineStroke() {
        return this.outlineStrokeSample.getStroke();
    }

    /**
     * Returns the current outline paint.
     * 
     * @return The current outline paint.
     */
    public Paint getOutlinePaint() {
        return this.outlinePaintSample.getPaint();
    }

    /**
     * Returns a reference to the panel for editing the properties of the
     * domain axis.
     *
     * @return A reference to a panel.
     */
    public DefaultAxisEditor getDomainAxisPropertyEditPanel() {
        return this.domainAxisPropertyPanel;
    }

    /**
     * Returns a reference to the panel for editing the properties of the
     * range axis.
     *
     * @return A reference to a panel.
     */
    public DefaultAxisEditor getRangeAxisPropertyEditPanel() {
        return this.rangeAxisPropertyPanel;
    }

    /**
     * Handles user actions generated within the panel.
     * @param event     the event
     */
    public void actionPerformed(ActionEvent event) {
        String command = event.getActionCommand();
        if (command.equals("BackgroundPaint")) {
            attemptBackgroundPaintSelection();
        }
        else if (command.equals("OutlineStroke")) {
            attemptOutlineStrokeSelection();
        }
        else if (command.equals("OutlinePaint")) {
            attemptOutlinePaintSelection();
        }
//        else if (command.equals("Insets")) {
//            editInsets();
//        }
        else if (command.equals("Orientation")) {
            attemptOrientationSelection();
        }
        else if (command.equals("DrawLines")) {
            attemptDrawLinesSelection();
        }
        else if (command.equals("DrawShapes")) {
            attemptDrawShapesSelection();
        }
    }

    /**
     * Allow the user to change the background paint.
     */
    private void attemptBackgroundPaintSelection() {
        Color c;
        c = JColorChooser.showDialog(
            this, localizationResources.getString("Background_Color"),
            Color.blue
        );
        if (c != null) {
            this.backgroundPaintSample.setPaint(c);
        }
    }

    /**
     * Allow the user to change the outline stroke.
     */
    private void attemptOutlineStrokeSelection() {
        StrokeChooserPanel panel 
            = new StrokeChooserPanel(null, this.availableStrokeSamples);
        int result = JOptionPane.showConfirmDialog(this, panel,
            localizationResources.getString("Stroke_Selection"),
            JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);

        if (result == JOptionPane.OK_OPTION) {
            this.outlineStrokeSample.setStroke(panel.getSelectedStroke());
        }
    }

    /**
     * Allow the user to change the outline paint.  We use JColorChooser, so
     * the user can only choose colors (a subset of all possible paints).
     */
    private void attemptOutlinePaintSelection() {
        Color c;
        c = JColorChooser.showDialog(
            this, localizationResources.getString("Outline_Color"), Color.blue
        );
        if (c != null) {
            this.outlinePaintSample.setPaint(c);
        }
    }

//    /**
//     * Allow the user to edit the individual insets' values.
//     */
//    private void editInsets() {
//        InsetsChooserPanel panel = new InsetsChooserPanel(this.plotInsets);
//        int result = JOptionPane.showConfirmDialog(
//            this, panel, localizationResources.getString("Edit_Insets"),
//            JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE
//        );
//
//        if (result == JOptionPane.OK_OPTION) {
//            this.plotInsets = panel.getInsets();
//            this.insetsTextField.setInsets(this.plotInsets);
//        }
//
//    }
//
    /**
     * Allow the user to modify the plot orientation if this is an editor for a
     * <tt>CategoryPlot</tt> or a <tt>XYPlot</tt>.
     */
    private void attemptOrientationSelection() {

        int index = this.orientationCombo.getSelectedIndex();

        if (index == ORIENTATION_VERTICAL) {
            this.plotOrientation = PlotOrientation.VERTICAL;
        }
        else {
            this.plotOrientation = PlotOrientation.HORIZONTAL;
        }
    }

    /**
     * Allow the user to modify whether or not lines are drawn between data 
     * points by <tt>LineAndShapeRenderer</tt>s and 
     * <tt>StandardXYItemRenderer</tt>s.
     */
    private void attemptDrawLinesSelection() {
        this.drawLines = BooleanUtilities.valueOf(
            this.drawLinesCheckBox.isSelected()
        );
    }

    /**
     * Allow the user to modify whether or not shapes are drawn at data points
     * by <tt>LineAndShapeRenderer</tt>s and <tt>StandardXYItemRenderer</tt>s.
     */
    private void attemptDrawShapesSelection() {
        this.drawShapes = BooleanUtilities.valueOf(
            this.drawShapesCheckBox.isSelected()
        );
    }

    /**
     * Updates the plot properties to match the properties defined on the panel.
     *
     * @param plot  The plot.
     */
    public void updatePlotProperties(Plot plot) {

        // set the plot properties...
        plot.setOutlinePaint(getOutlinePaint());
        plot.setOutlineStroke(getOutlineStroke());
        plot.setBackgroundPaint(getBackgroundPaint());
        plot.setInsets(getPlotInsets());

        // then the axis properties...
        if (this.domainAxisPropertyPanel != null) {
            Axis domainAxis = null;
            if (plot instanceof CategoryPlot) {
                CategoryPlot p = (CategoryPlot) plot;
                domainAxis = p.getDomainAxis();
            }
            else if (plot instanceof XYPlot) {
                XYPlot p = (XYPlot) plot;
                domainAxis = p.getDomainAxis();
            }
            if (domainAxis != null) {
                this.domainAxisPropertyPanel.setAxisProperties(domainAxis);
            }
        }

        if (this.rangeAxisPropertyPanel != null) {
            Axis rangeAxis = null;
            if (plot instanceof CategoryPlot) {
                CategoryPlot p = (CategoryPlot) plot;
                rangeAxis = p.getRangeAxis();
            }
            else if (plot instanceof XYPlot) {
                XYPlot p = (XYPlot) plot;
                rangeAxis = p.getRangeAxis();
            }
            if (rangeAxis != null) {
                this.rangeAxisPropertyPanel.setAxisProperties(rangeAxis);
            }
        }

        if (this.plotOrientation != null) {
            if (plot instanceof CategoryPlot) {
                CategoryPlot p = (CategoryPlot) plot;
                p.setOrientation(this.plotOrientation);
            }
            else if (plot instanceof XYPlot) {
                XYPlot p = (XYPlot) plot;
                p.setOrientation(this.plotOrientation);
            }
        }

        if (this.drawLines != null) {
            if (plot instanceof CategoryPlot) {
                CategoryPlot p = (CategoryPlot) plot;
                CategoryItemRenderer r = p.getRenderer();
                if (r instanceof LineAndShapeRenderer) {
                    ((LineAndShapeRenderer) r).setLinesVisible(
                        this.drawLines.booleanValue()
                    );
                }
            }
            else if (plot instanceof XYPlot) {
                XYPlot p = (XYPlot) plot;
                XYItemRenderer r = p.getRenderer();
                if (r instanceof StandardXYItemRenderer) {
                    ((StandardXYItemRenderer) r).setPlotLines(
                        this.drawLines.booleanValue()
                    );
                }
            }
        }

        if (this.drawShapes != null) {
            if (plot instanceof CategoryPlot) {
                CategoryPlot p = (CategoryPlot) plot;
                CategoryItemRenderer r = p.getRenderer();
                if (r instanceof LineAndShapeRenderer) {
                    ((LineAndShapeRenderer) r).setShapesVisible(
                        this.drawShapes.booleanValue()
                    );
                }
            }
            else if (plot instanceof XYPlot) {
                XYPlot p = (XYPlot) plot;
                XYItemRenderer r = p.getRenderer();
                if (r instanceof StandardXYItemRenderer) {
                    ((StandardXYItemRenderer) r).setBaseShapesVisible(
                        this.drawShapes.booleanValue());
                }
            }
        }

//dmo: added this panel for colorbar control. (start dmo additions)
        if (this.colorBarAxisPropertyPanel != null) {
            ColorBar colorBar = null;
            if (plot instanceof  ContourPlot) {
                ContourPlot p = (ContourPlot) plot;
                colorBar = p.getColorBar();
            }
            if (colorBar != null) {
                this.colorBarAxisPropertyPanel.setAxisProperties(colorBar);
            }
        }
//dmo: (end dmo additions)

    }

}