/* * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * *   - Redistributions of source code must retain the above copyright *     notice, this list of conditions and the following disclaimer. * *   - Redistributions in binary form must reproduce the above copyright *     notice, this list of conditions and the following disclaimer in the *     documentation and/or other materials provided with the distribution. * *   - Neither the name of Sun Microsystems nor the names of its *     contributors may be used to endorse or promote products derived *     from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package components;import java.awt.*;import java.awt.event.*;import javax.swing.*;import javax.swing.event.*;import java.util.*;//SplitPaneDemo itself is not a visible component.public class SplitPaneDemo extends JPanel                          implements ListSelectionListener {    private JLabel picture;    private JList list;    private JSplitPane splitPane;    private String[] imageNames = { "Bird", "Cat", "Dog", "Rabbit", "Pig", "dukeWaveRed",        "kathyCosmo", "lainesTongue", "left", "middle", "right", "stickerface"};    public SplitPaneDemo() {        //Create the list of images and put it in a scroll pane.                list = new JList(imageNames);        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);        list.setSelectedIndex(0);        list.addListSelectionListener(this);                       JScrollPane listScrollPane = new JScrollPane(list);        picture = new JLabel();        picture.setFont(picture.getFont().deriveFont(Font.ITALIC));        picture.setHorizontalAlignment(JLabel.CENTER);                JScrollPane pictureScrollPane = new JScrollPane(picture);        //Create a split pane with the two scroll panes in it.        splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,                                   listScrollPane, pictureScrollPane);        splitPane.setOneTouchExpandable(true);        splitPane.setDividerLocation(150);        //Provide minimum sizes for the two components in the split pane.        Dimension minimumSize = new Dimension(100, 50);        listScrollPane.setMinimumSize(minimumSize);        pictureScrollPane.setMinimumSize(minimumSize);        //Provide a preferred size for the split pane.        splitPane.setPreferredSize(new Dimension(400, 200));        updateLabel(imageNames[list.getSelectedIndex()]);    }        //Listens to the list    public void valueChanged(ListSelectionEvent e) {        JList list = (JList)e.getSource();        updateLabel(imageNames[list.getSelectedIndex()]);    }        //Renders the selected image    protected void updateLabel (String name) {        ImageIcon icon = createImageIcon("images/" + name + ".gif");        picture.setIcon(icon);        if  (icon != null) {            picture.setText(null);        } else {            picture.setText("Image not found");        }    }    //Used by SplitPaneDemo2    public JList getImageList() {        return list;    }    public JSplitPane getSplitPane() {        return splitPane;    }       /** Returns an ImageIcon, or null if the path was invalid. */    protected static ImageIcon createImageIcon(String path) {       java.net.URL imgURL = SplitPaneDemo.class.getResource(path);        if (imgURL != null) {            return new ImageIcon(imgURL);        } else {            System.err.println("Couldn't find file: " + path);            return null;        }    }    /**     * Create the GUI and show it.  For thread safety,     * this method should be invoked from the     * event-dispatching thread.     */    private static void createAndShowGUI() {        //Create and set up the window.        JFrame frame = new JFrame("SplitPaneDemo");        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);        SplitPaneDemo splitPaneDemo = new SplitPaneDemo();        frame.getContentPane().add(splitPaneDemo.getSplitPane());        //Display the window.        frame.pack();        frame.setVisible(true);    }    public static void main(String[] args) {        //Schedule a job for the event-dispatching thread:        //creating and showing this application's GUI.        javax.swing.SwingUtilities.invokeLater(new Runnable() {            public void run() {                createAndShowGUI();            }        });    }      }