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jfreechart example source code file (DefaultColorBarEditor.java)

This example jfreechart source code file (DefaultColorBarEditor.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

awt, defaultcolorbareditor, defaultcolorbareditor, event, gui, jbutton, jcheckbox, jcheckbox, jpanel, jpanel, palette, palette_selection, palettechoice, palettechooserpanel, palettesample, palettesample, step_palette, swing, util

The jfreechart DefaultColorBarEditor.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * --------------------------
 * DefaultColorBarEditor.java
 * --------------------------
 * (C) Copyright 2002-2008, by David M. O'Donnell and Contributors.
 *
 * Original Author:  David M. O'Donnell;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *                   Arnaud Lelievre;
 *
 * Changes
 * -------
 * 26-Nov-2002 : Version 1 contributed by David M. O'Donnell (DG);
 * 08-Sep-2003 : Added internationalization via use of properties
 *               resourceBundle (RFE 690236) (AL);
 * 24-Nov-2005 : Moved and renamed: org.jfree.chart.ui.ColorBarPropertyEditPanel
 *               --> DefaultColorBarEditor (DG);
 * 02-Feb-2007 : Removed author tags all over JFreeChart sources (DG);
 * 18-Dec-2008 : Use ResourceBundleWrapper - see patch 1607918 by
 *               Jess Thrysoee (DG);
 *
 */

package org.jfree.chart.editor;

import java.awt.event.ActionEvent;
import java.util.ResourceBundle;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;

import org.jfree.chart.axis.ColorBar;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.GreyPalette;
import org.jfree.chart.plot.RainbowPalette;
import org.jfree.chart.util.ResourceBundleWrapper;
import org.jfree.layout.LCBLayout;

/**
 * A DefaultColorBarEditor.  Extends DefaultNumberAxisEditor to allow
 * change general axis type parameters.
 */
class DefaultColorBarEditor extends DefaultNumberAxisEditor {

    /**
     * A checkbox that indicates whether or not the color indices should run
     * high to low.
     */
    private JCheckBox invertPaletteCheckBox;

    /** Flag set by invertPaletteCheckBox. */
    private boolean invertPalette = false;

    /** A checkbox that indicates whether the palette is stepped. */
    private JCheckBox stepPaletteCheckBox;

    /** Flag set by stepPaletteCheckBox. */
    private boolean stepPalette = false;

    /** The Palette Sample displaying the current Palette. */
    private PaletteSample currentPalette;

    /** An array of availiable sample palettes. */
    private PaletteSample[] availablePaletteSamples;

    /** The resourceBundle for the localization. */
   protected  static ResourceBundle localizationResources
           = ResourceBundleWrapper.getBundle(
                   "org.jfree.chart.editor.LocalizationBundle");

    /**
     * Creates a new edit panel for a color bar.
     *
     * @param colorBar  the color bar.
     */
    public DefaultColorBarEditor(ColorBar colorBar) {
        super((NumberAxis) colorBar.getAxis());
        this.invertPalette = colorBar.getColorPalette().isInverse();
        this.stepPalette = colorBar.getColorPalette().isStepped();
        this.currentPalette = new PaletteSample(colorBar.getColorPalette());
        this.availablePaletteSamples = new PaletteSample[2];
        this.availablePaletteSamples[0]
            = new PaletteSample(new RainbowPalette());
        this.availablePaletteSamples[1]
            = new PaletteSample(new GreyPalette());

        JTabbedPane other = getOtherTabs();

        JPanel palettePanel = new JPanel(new LCBLayout(4));
        palettePanel.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));

        palettePanel.add(new JPanel());
        this.invertPaletteCheckBox = new JCheckBox(
            localizationResources.getString("Invert_Palette"),
            this.invertPalette
        );
        this.invertPaletteCheckBox.setActionCommand("invertPalette");
        this.invertPaletteCheckBox.addActionListener(this);
        palettePanel.add(this.invertPaletteCheckBox);
        palettePanel.add(new JPanel());

        palettePanel.add(new JPanel());
        this.stepPaletteCheckBox = new JCheckBox(
            localizationResources.getString("Step_Palette"),
            this.stepPalette
        );
        this.stepPaletteCheckBox.setActionCommand("stepPalette");
        this.stepPaletteCheckBox.addActionListener(this);
        palettePanel.add(this.stepPaletteCheckBox);
        palettePanel.add(new JPanel());

        palettePanel.add(
            new JLabel(localizationResources.getString("Palette"))
        );
        JButton button
            = new JButton(localizationResources.getString("Set_palette..."));
        button.setActionCommand("PaletteChoice");
        button.addActionListener(this);
        palettePanel.add(this.currentPalette);
        palettePanel.add(button);

        other.add(localizationResources.getString("Palette"), palettePanel);

    }

    /**
     * Handles actions from within the property panel.
     *
     * @param event  the event.
     */
    public void actionPerformed(ActionEvent event) {
        String command = event.getActionCommand();
        if (command.equals("PaletteChoice")) {
            attemptPaletteSelection();
        }
        else if (command.equals("invertPalette")) {
            this.invertPalette = this.invertPaletteCheckBox.isSelected();
        }
        else if (command.equals("stepPalette")) {
            this.stepPalette = this.stepPaletteCheckBox.isSelected();
        }
        else {
            super.actionPerformed(event);  // pass to super-class for handling
        }
    }

    /**
     * Handle a palette selection.
     */
    private void attemptPaletteSelection() {
        PaletteChooserPanel panel
            = new PaletteChooserPanel(null, this.availablePaletteSamples);
        int result = JOptionPane.showConfirmDialog(
            this, panel, localizationResources.getString("Palette_Selection"),
            JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE
        );

        if (result == JOptionPane.OK_OPTION) {
            double zmin = this.currentPalette.getPalette().getMinZ();
            double zmax = this.currentPalette.getPalette().getMaxZ();
            this.currentPalette.setPalette(panel.getSelectedPalette());
            this.currentPalette.getPalette().setMinZ(zmin);
            this.currentPalette.getPalette().setMaxZ(zmax);
        }
    }

    /**
     * Sets the properties of the specified axis to match the properties
     * defined on this panel.
     *
     * @param colorBar  the color bar.
     */
    public void setAxisProperties(ColorBar colorBar) {
        super.setAxisProperties(colorBar.getAxis());
        colorBar.setColorPalette(this.currentPalette.getPalette());
        colorBar.getColorPalette().setInverse(this.invertPalette); //dmo added
        colorBar.getColorPalette().setStepped(this.stepPalette); //dmo added
    }

    /**
     * A static method that returns a panel that is appropriate for the axis
     * type.
     *
     * @param colorBar  the color bar.
     *
     * @return A panel or <code>nullnull.
     */
    public static DefaultColorBarEditor getInstance(ColorBar colorBar) {

        if (colorBar != null) {
            return new DefaultColorBarEditor(colorBar);
        }
        else {
            return null;
        }

    }

}

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