/*
* Copyright (c) 1998, 2011, Oracle and/or its affiliates. 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 Oracle 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.
*/
/*
* This source code is provided to illustrate the usage of a given feature
* or technique and has been deliberately simplified. Additional steps
* required for a production-quality application, such as security checks,
* input validation and proper error handling, might not be present in
* this sample code.
*/
import java.lang.reflect.InvocationTargetException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.UIManager.LookAndFeelInfo;
import java.awt.BorderLayout;
import java.awt.CardLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.List;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ButtonGroup;
import javax.swing.DefaultComboBoxModel;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;
import javax.swing.JToggleButton;
import javax.swing.LookAndFeel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.WindowConstants;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.filechooser.FileSystemView;
import java.util.ArrayList;
import javax.swing.plaf.FileChooserUI;
import javax.swing.plaf.basic.BasicFileChooserUI;
import java.io.File;
import static javax.swing.JFileChooser.*;
/**
*
* A demo which makes extensive use of the file chooser.
*
* @author Jeff Dinkins
*/
@SuppressWarnings("serial")
public class FileChooserDemo extends JPanel implements ActionListener {
public static final String NIMBUS_LAF_NAME = "Nimbus";
private static JFrame frame;
private final List<SupportedLaF> supportedLaFs =
new ArrayList<SupportedLaF>();
private static SupportedLaF nimbusLaF;
private static class SupportedLaF {
private final String name;
private final LookAndFeel laf;
SupportedLaF(String name, LookAndFeel laf) {
this.name = name;
this.laf = laf;
}
@Override
public String toString() {
return name;
}
}
private JButton showButton;
private JCheckBox showAllFilesFilterCheckBox;
private JCheckBox showImageFilesFilterCheckBox;
private JCheckBox showFullDescriptionCheckBox;
private JCheckBox useFileViewCheckBox;
private JCheckBox useFileSystemViewCheckBox;
private JCheckBox accessoryCheckBox;
private JCheckBox setHiddenCheckBox;
private JCheckBox useEmbedInWizardCheckBox;
private JCheckBox useControlsCheckBox;
private JCheckBox enableDragCheckBox;
private JRadioButton singleSelectionRadioButton;
private JRadioButton multiSelectionRadioButton;
private JRadioButton openRadioButton;
private JRadioButton saveRadioButton;
private JRadioButton customButton;
private JComboBox lafComboBox;
private JRadioButton justFilesRadioButton;
private JRadioButton justDirectoriesRadioButton;
private JRadioButton bothFilesAndDirectoriesRadioButton;
private JTextField customField;
private final ExampleFileView fileView;
private final ExampleFileSystemView fileSystemView;
private final static Dimension hpad10 = new Dimension(10, 1);
private final static Dimension vpad20 = new Dimension(1, 20);
private final static Dimension vpad7 = new Dimension(1, 7);
private final static Dimension vpad4 = new Dimension(1, 4);
private final static Insets insets = new Insets(5, 10, 0, 10);
private final FilePreviewer previewer;
private final JFileChooser chooser;
@SuppressWarnings("LeakingThisInConstructor")
public FileChooserDemo() {
UIManager.LookAndFeelInfo[] installedLafs = UIManager.
getInstalledLookAndFeels();
for (UIManager.LookAndFeelInfo lafInfo : installedLafs) {
try {
Class<?> lnfClass = Class.forName(lafInfo.getClassName());
LookAndFeel laf = (LookAndFeel) (lnfClass.newInstance());
if (laf.isSupportedLookAndFeel()) {
String name = lafInfo.getName();
SupportedLaF supportedLaF = new SupportedLaF(name, laf);
supportedLaFs.add(supportedLaF);
if (NIMBUS_LAF_NAME.equals(name)) {
nimbusLaF = supportedLaF;
}
}
} catch (Exception ignored) {
// If ANYTHING weird happens, don't add this L&F
}
}
setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
chooser = new JFileChooser();
previewer = new FilePreviewer(chooser);
// Create Custom FileView
fileView = new ExampleFileView();
fileView.putIcon("jpg", new ImageIcon(getClass().getResource(
"/resources/images/jpgIcon.jpg")));
fileView.putIcon("gif", new ImageIcon(getClass().getResource(
"/resources/images/gifIcon.gif")));
// Create Custom FileSystemView
fileSystemView = new ExampleFileSystemView();
// create a radio listener to listen to option changes
OptionListener optionListener = new OptionListener();
// Create options
openRadioButton = new JRadioButton("Open");
openRadioButton.setSelected(true);
openRadioButton.addActionListener(optionListener);
saveRadioButton = new JRadioButton("Save");
saveRadioButton.addActionListener(optionListener);
customButton = new JRadioButton("Custom");
customButton.addActionListener(optionListener);
customField = new JTextField(8) {
@Override
public Dimension getMaximumSize() {
return new Dimension(getPreferredSize().width,
getPreferredSize().height);
}
};
customField.setText("Doit");
customField.setAlignmentY(JComponent.TOP_ALIGNMENT);
customField.setEnabled(false);
customField.addActionListener(optionListener);
ButtonGroup group1 = new ButtonGroup();
group1.add(openRadioButton);
group1.add(saveRadioButton);
group1.add(customButton);
// filter buttons
showAllFilesFilterCheckBox = new JCheckBox("Show \"All Files\" Filter");
showAllFilesFilterCheckBox.addActionListener(optionListener);
showAllFilesFilterCheckBox.setSelected(true);
showImageFilesFilterCheckBox = new JCheckBox("Show JPG and GIF Filters");
showImageFilesFilterCheckBox.addActionListener(optionListener);
showImageFilesFilterCheckBox.setSelected(false);
accessoryCheckBox = new JCheckBox("Show Preview");
accessoryCheckBox.addActionListener(optionListener);
accessoryCheckBox.setSelected(false);
// more options
setHiddenCheckBox = new JCheckBox("Show Hidden Files");
setHiddenCheckBox.addActionListener(optionListener);
showFullDescriptionCheckBox = new JCheckBox("With File Extensions");
showFullDescriptionCheckBox.addActionListener(optionListener);
showFullDescriptionCheckBox.setSelected(true);
showFullDescriptionCheckBox.setEnabled(false);
useFileViewCheckBox = new JCheckBox("Use FileView");
useFileViewCheckBox.addActionListener(optionListener);
useFileViewCheckBox.setSelected(false);
useFileSystemViewCheckBox = new JCheckBox("Use FileSystemView", false);
useFileSystemViewCheckBox.addActionListener(optionListener);
useEmbedInWizardCheckBox = new JCheckBox("Embed in Wizard");
useEmbedInWizardCheckBox.addActionListener(optionListener);
useEmbedInWizardCheckBox.setSelected(false);
useControlsCheckBox = new JCheckBox("Show Control Buttons");
useControlsCheckBox.addActionListener(optionListener);
useControlsCheckBox.setSelected(true);
enableDragCheckBox = new JCheckBox("Enable Dragging");
enableDragCheckBox.addActionListener(optionListener);
// File or Directory chooser options
ButtonGroup group3 = new ButtonGroup();
justFilesRadioButton = new JRadioButton("Just Select Files");
justFilesRadioButton.setSelected(true);
group3.add(justFilesRadioButton);
justFilesRadioButton.addActionListener(optionListener);
justDirectoriesRadioButton = new JRadioButton("Just Select Directories");
group3.add(justDirectoriesRadioButton);
justDirectoriesRadioButton.addActionListener(optionListener);
bothFilesAndDirectoriesRadioButton = new JRadioButton(
"Select Files or Directories");
group3.add(bothFilesAndDirectoriesRadioButton);
bothFilesAndDirectoriesRadioButton.addActionListener(optionListener);
singleSelectionRadioButton = new JRadioButton("Single Selection", true);
singleSelectionRadioButton.addActionListener(optionListener);
multiSelectionRadioButton = new JRadioButton("Multi Selection");
multiSelectionRadioButton.addActionListener(optionListener);
ButtonGroup group4 = new ButtonGroup();
group4.add(singleSelectionRadioButton);
group4.add(multiSelectionRadioButton);
// Create show button
showButton = new JButton("Show FileChooser");
showButton.addActionListener(this);
showButton.setMnemonic('s');
// Create laf combo box
lafComboBox = new JComboBox(supportedLaFs.toArray());
lafComboBox.setSelectedItem(nimbusLaF);
lafComboBox.setEditable(false);
lafComboBox.addActionListener(optionListener);
// ********************************************************
// ******************** Dialog Type ***********************
// ********************************************************
JPanel control1 = new InsetPanel(insets);
control1.setBorder(BorderFactory.createTitledBorder("Dialog Type"));
control1.setLayout(new BoxLayout(control1, BoxLayout.Y_AXIS));
control1.add(Box.createRigidArea(vpad20));
control1.add(openRadioButton);
control1.add(Box.createRigidArea(vpad7));
control1.add(saveRadioButton);
control1.add(Box.createRigidArea(vpad7));
control1.add(customButton);
control1.add(Box.createRigidArea(vpad4));
JPanel fieldWrapper = new JPanel();
fieldWrapper.setLayout(new BoxLayout(fieldWrapper, BoxLayout.X_AXIS));
fieldWrapper.setAlignmentX(Component.LEFT_ALIGNMENT);
fieldWrapper.add(Box.createRigidArea(hpad10));
fieldWrapper.add(Box.createRigidArea(hpad10));
fieldWrapper.add(customField);
control1.add(fieldWrapper);
control1.add(Box.createRigidArea(vpad20));
control1.add(Box.createGlue());
// ********************************************************
// ***************** Filter Controls **********************
// ********************************************************
JPanel control2 = new InsetPanel(insets);
control2.setBorder(BorderFactory.createTitledBorder("Filter Controls"));
control2.setLayout(new BoxLayout(control2, BoxLayout.Y_AXIS));
control2.add(Box.createRigidArea(vpad20));
control2.add(showAllFilesFilterCheckBox);
control2.add(Box.createRigidArea(vpad7));
control2.add(showImageFilesFilterCheckBox);
control2.add(Box.createRigidArea(vpad4));
JPanel checkWrapper = new JPanel();
checkWrapper.setLayout(new BoxLayout(checkWrapper, BoxLayout.X_AXIS));
checkWrapper.setAlignmentX(Component.LEFT_ALIGNMENT);
checkWrapper.add(Box.createRigidArea(hpad10));
checkWrapper.add(Box.createRigidArea(hpad10));
checkWrapper.add(showFullDescriptionCheckBox);
control2.add(checkWrapper);
control2.add(Box.createRigidArea(vpad20));
control2.add(Box.createGlue());
// ********************************************************
// ****************** Display Options *********************
// ********************************************************
JPanel control3 = new InsetPanel(insets);
control3.setBorder(BorderFactory.createTitledBorder("Display Options"));
control3.setLayout(new BoxLayout(control3, BoxLayout.Y_AXIS));
control3.add(Box.createRigidArea(vpad20));
control3.add(setHiddenCheckBox);
control3.add(Box.createRigidArea(vpad7));
control3.add(useFileViewCheckBox);
control3.add(Box.createRigidArea(vpad7));
control3.add(useFileSystemViewCheckBox);
control3.add(Box.createRigidArea(vpad7));
control3.add(accessoryCheckBox);
control3.add(Box.createRigidArea(vpad7));
control3.add(useEmbedInWizardCheckBox);
control3.add(Box.createRigidArea(vpad7));
control3.add(useControlsCheckBox);
control3.add(Box.createRigidArea(vpad7));
control3.add(enableDragCheckBox);
control3.add(Box.createRigidArea(vpad20));
control3.add(Box.createGlue());
// ********************************************************
// ************* File & Directory Options *****************
// ********************************************************
JPanel control4 = new InsetPanel(insets);
control4.setBorder(BorderFactory.createTitledBorder(
"File and Directory Options"));
control4.setLayout(new BoxLayout(control4, BoxLayout.Y_AXIS));
control4.add(Box.createRigidArea(vpad20));
control4.add(justFilesRadioButton);
control4.add(Box.createRigidArea(vpad7));
control4.add(justDirectoriesRadioButton);
control4.add(Box.createRigidArea(vpad7));
control4.add(bothFilesAndDirectoriesRadioButton);
control4.add(Box.createRigidArea(vpad20));
control4.add(singleSelectionRadioButton);
control4.add(Box.createRigidArea(vpad7));
control4.add(multiSelectionRadioButton);
control4.add(Box.createRigidArea(vpad20));
control4.add(Box.createGlue());
// ********************************************************
// **************** Look & Feel Switch ********************
// ********************************************************
JPanel panel = new JPanel();
panel.add(new JLabel("Look and Feel: "));
panel.add(lafComboBox);
panel.add(showButton);
// ********************************************************
// ****************** Wrap 'em all up *********************
// ********************************************************
JPanel wrapper = new JPanel();
wrapper.setLayout(new BoxLayout(wrapper, BoxLayout.X_AXIS));
add(Box.createRigidArea(vpad20));
wrapper.add(Box.createRigidArea(hpad10));
wrapper.add(Box.createRigidArea(hpad10));
wrapper.add(control1);
wrapper.add(Box.createRigidArea(hpad10));
wrapper.add(control2);
wrapper.add(Box.createRigidArea(hpad10));
wrapper.add(control3);
wrapper.add(Box.createRigidArea(hpad10));
wrapper.add(control4);
wrapper.add(Box.createRigidArea(hpad10));
wrapper.add(Box.createRigidArea(hpad10));
add(wrapper);
add(Box.createRigidArea(vpad20));
add(panel);
add(Box.createRigidArea(vpad20));
}
public void actionPerformed(ActionEvent e) {
if (customButton.isSelected()) {
chooser.setApproveButtonText(customField.getText());
}
if (chooser.isMultiSelectionEnabled()) {
chooser.setSelectedFiles(null);
} else {
chooser.setSelectedFile(null);
}
// clear the preview from the previous display of the chooser
JComponent accessory = chooser.getAccessory();
if (accessory != null) {
((FilePreviewer) accessory).loadImage(null);
}
if (useEmbedInWizardCheckBox.isSelected()) {
WizardDialog wizard = new WizardDialog(frame, true);
wizard.setVisible(true);
wizard.dispose();
return;
}
int retval = chooser.showDialog(frame, null);
if (retval == APPROVE_OPTION) {
JOptionPane.showMessageDialog(frame, getResultString());
} else if (retval == CANCEL_OPTION) {
JOptionPane.showMessageDialog(frame,
"User cancelled operation. No file was chosen.");
} else if (retval == ERROR_OPTION) {
JOptionPane.showMessageDialog(frame,
"An error occured. No file was chosen.");
} else {
JOptionPane.showMessageDialog(frame, "Unknown operation occured.");
}
}
private void resetFileFilters(boolean enableFilters,
boolean showExtensionInDescription) {
chooser.resetChoosableFileFilters();
if (enableFilters) {
FileFilter jpgFilter = createFileFilter(
"JPEG Compressed Image Files",
showExtensionInDescription, "jpg");
FileFilter gifFilter = createFileFilter("GIF Image Files",
showExtensionInDescription, "gif");
FileFilter bothFilter = createFileFilter("JPEG and GIF Image Files",
showExtensionInDescription, "jpg",
"gif");
chooser.addChoosableFileFilter(bothFilter);
chooser.addChoosableFileFilter(jpgFilter);
chooser.addChoosableFileFilter(gifFilter);
}
}
private FileFilter createFileFilter(String description,
boolean showExtensionInDescription, String... extensions) {
if (showExtensionInDescription) {
description = createFileNameFilterDescriptionFromExtensions(
description, extensions);
}
return new FileNameExtensionFilter(description, extensions);
}
private String createFileNameFilterDescriptionFromExtensions(
String description, String[] extensions) {
String fullDescription = (description == null) ? "(" : description
+ " (";
// build the description from the extension list
fullDescription += "." + extensions[0];
for (int i = 1; i < extensions.length; i++) {
fullDescription += ", .";
fullDescription += extensions[i];
}
fullDescription += ")";
return fullDescription;
}
private class WizardDialog extends JDialog implements ActionListener {
CardLayout cardLayout;
JPanel cardPanel;
JLabel messageLabel;
JButton backButton, nextButton, closeButton;
@SuppressWarnings("LeakingThisInConstructor")
WizardDialog(JFrame frame, boolean modal) {
super(frame, "Embedded JFileChooser Demo", modal);
cardLayout = new CardLayout();
cardPanel = new JPanel(cardLayout);
getContentPane().add(cardPanel, BorderLayout.CENTER);
messageLabel = new JLabel("", JLabel.CENTER);
cardPanel.add(chooser, "fileChooser");
cardPanel.add(messageLabel, "label");
cardLayout.show(cardPanel, "fileChooser");
chooser.addActionListener(this);
JPanel buttonPanel = new JPanel();
backButton = new JButton("< Back");
nextButton = new JButton("Next >");
closeButton = new JButton("Close");
buttonPanel.add(backButton);
buttonPanel.add(nextButton);
buttonPanel.add(closeButton);
getContentPane().add(buttonPanel, BorderLayout.SOUTH);
backButton.setEnabled(false);
getRootPane().setDefaultButton(nextButton);
backButton.addActionListener(this);
nextButton.addActionListener(this);
closeButton.addActionListener(this);
pack();
setLocationRelativeTo(frame);
}
public void actionPerformed(ActionEvent evt) {
Object src = evt.getSource();
String cmd = evt.getActionCommand();
if (src == backButton) {
back();
} else if (src == nextButton) {
FileChooserUI ui = chooser.getUI();
if (ui instanceof BasicFileChooserUI) {
// Workaround for bug 4528663. This is necessary to
// pick up the contents of the file chooser text field.
// This will trigger an APPROVE_SELECTION action.
((BasicFileChooserUI) ui).getApproveSelectionAction().
actionPerformed(null);
} else {
next();
}
} else if (src == closeButton) {
close();
} else if (APPROVE_SELECTION.equals(cmd)) {
next();
} else if (CANCEL_SELECTION.equals(cmd)) {
close();
}
}
private void back() {
backButton.setEnabled(false);
nextButton.setEnabled(true);
cardLayout.show(cardPanel, "fileChooser");
getRootPane().setDefaultButton(nextButton);
chooser.requestFocus();
}
private void next() {
backButton.setEnabled(true);
nextButton.setEnabled(false);
messageLabel.setText(getResultString());
cardLayout.show(cardPanel, "label");
getRootPane().setDefaultButton(closeButton);
closeButton.requestFocus();
}
private void close() {
setVisible(false);
}
@Override
public void dispose() {
chooser.removeActionListener(this);
// The chooser is hidden by CardLayout on remove
// so fix it here
cardPanel.remove(chooser);
chooser.setVisible(true);
super.dispose();
}
}
private String getResultString() {
String resultString;
String filter;
if (chooser.getFileFilter() == null) {
filter = "";
} else {
filter = chooser.getFileFilter().getDescription();
}
String path = null;
boolean isDirMode = (chooser.getFileSelectionMode() == DIRECTORIES_ONLY);
boolean isMulti = chooser.isMultiSelectionEnabled();
if (isMulti) {
File[] files = chooser.getSelectedFiles();
if (files != null && files.length > 0) {
path = "";
for (File file : files) {
path = path + "<br>" + file.getPath();
}
}
} else {
File file = chooser.getSelectedFile();
if (file != null) {
path = "<br>" + file.getPath();
}
}
if (path != null) {
path = path.replace(" ", " ");
filter = filter.replace(" ", " ");
resultString =
"<html>You chose " + (isMulti ? "these" : "this") + " " + (isDirMode ? (isMulti
? "directories" : "directory")
: (isMulti ? "files" : "file")) + ": <code>" + path
+ "</code><br><br>with filter: <br><code>" + filter;
} else {
resultString = "Nothing was chosen";
}
return resultString;
}
/** An ActionListener that listens to the radio buttons. */
private class OptionListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
JComponent c = (JComponent) e.getSource();
boolean selected = false;
if (c instanceof JToggleButton) {
selected = ((JToggleButton) c).isSelected();
}
if (c == openRadioButton) {
chooser.setDialogType(OPEN_DIALOG);
customField.setEnabled(false);
repaint();
} else if (c == useEmbedInWizardCheckBox) {
useControlsCheckBox.setEnabled(!selected);
useControlsCheckBox.setSelected(!selected);
chooser.setControlButtonsAreShown(!selected);
} else if (c == useControlsCheckBox) {
chooser.setControlButtonsAreShown(selected);
} else if (c == enableDragCheckBox) {
chooser.setDragEnabled(selected);
} else if (c == saveRadioButton) {
chooser.setDialogType(SAVE_DIALOG);
customField.setEnabled(false);
repaint();
} else if (c == customButton || c == customField) {
customField.setEnabled(true);
chooser.setDialogType(CUSTOM_DIALOG);
repaint();
} else if (c == showAllFilesFilterCheckBox) {
chooser.setAcceptAllFileFilterUsed(selected);
} else if (c == showImageFilesFilterCheckBox) {
resetFileFilters(selected,
showFullDescriptionCheckBox.isSelected());
showFullDescriptionCheckBox.setEnabled(selected);
} else if (c == setHiddenCheckBox) {
chooser.setFileHidingEnabled(!selected);
} else if (c == accessoryCheckBox) {
if (selected) {
chooser.setAccessory(previewer);
} else {
chooser.setAccessory(null);
}
} else if (c == useFileViewCheckBox) {
if (selected) {
chooser.setFileView(fileView);
} else {
chooser.setFileView(null);
}
} else if (c == useFileSystemViewCheckBox) {
if (selected) {
chooser.setFileSystemView(fileSystemView);
} else {
// Restore default behaviour
chooser.setFileSystemView(FileSystemView.getFileSystemView());
}
} else if (c == showFullDescriptionCheckBox) {
resetFileFilters(showImageFilesFilterCheckBox.isSelected(),
selected);
} else if (c == justFilesRadioButton) {
chooser.setFileSelectionMode(FILES_ONLY);
} else if (c == justDirectoriesRadioButton) {
chooser.setFileSelectionMode(DIRECTORIES_ONLY);
} else if (c == bothFilesAndDirectoriesRadioButton) {
chooser.setFileSelectionMode(FILES_AND_DIRECTORIES);
} else if (c == singleSelectionRadioButton) {
if (selected) {
chooser.setMultiSelectionEnabled(false);
}
} else if (c == multiSelectionRadioButton) {
if (selected) {
chooser.setMultiSelectionEnabled(true);
}
} else if (c == lafComboBox) {
SupportedLaF supportedLaF = ((SupportedLaF) lafComboBox.
getSelectedItem());
LookAndFeel laf = supportedLaF.laf;
try {
UIManager.setLookAndFeel(laf);
SwingUtilities.updateComponentTreeUI(frame);
if (chooser != null) {
SwingUtilities.updateComponentTreeUI(chooser);
}
frame.pack();
} catch (UnsupportedLookAndFeelException exc) {
// This should not happen because we already checked
((DefaultComboBoxModel) lafComboBox.getModel()).
removeElement(supportedLaF);
}
}
}
}
private class FilePreviewer extends JComponent implements
PropertyChangeListener {
ImageIcon thumbnail = null;
@SuppressWarnings("LeakingThisInConstructor")
public FilePreviewer(JFileChooser fc) {
setPreferredSize(new Dimension(100, 50));
fc.addPropertyChangeListener(this);
}
public void loadImage(File f) {
if (f == null) {
thumbnail = null;
} else {
ImageIcon tmpIcon = new ImageIcon(f.getPath());
if (tmpIcon.getIconWidth() > 90) {
thumbnail = new ImageIcon(
tmpIcon.getImage().getScaledInstance(90, -1,
Image.SCALE_DEFAULT));
} else {
thumbnail = tmpIcon;
}
}
}
public void propertyChange(PropertyChangeEvent e) {
String prop = e.getPropertyName();
if (SELECTED_FILE_CHANGED_PROPERTY.equals(prop)) {
if (isShowing()) {
loadImage((File) e.getNewValue());
repaint();
}
}
}
@Override
public void paint(Graphics g) {
if (thumbnail != null) {
int x = getWidth() / 2 - thumbnail.getIconWidth() / 2;
int y = getHeight() / 2 - thumbnail.getIconHeight() / 2;
if (y < 0) {
y = 0;
}
if (x < 5) {
x = 5;
}
thumbnail.paintIcon(this, g, x, y);
}
}
}
public static void main(String s[]) {
try {
SwingUtilities.invokeAndWait(new Runnable() {
public void run() {
/*
* NOTE: By default, the look and feel will be set to the
* Cross Platform Look and Feel (which is currently Metal).
* The following code tries to set the Look and Feel to Nimbus.
* http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/nimbus.html
*/
try {
for (LookAndFeelInfo info : UIManager.
getInstalledLookAndFeels()) {
if (NIMBUS_LAF_NAME.equals(info.getName())) {
UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (Exception ignored) {
}
FileChooserDemo panel = new FileChooserDemo();
frame = new JFrame("FileChooserDemo");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.getContentPane().add("Center", panel);
frame.pack();
frame.setVisible(true);
}
});
} catch (InterruptedException ex) {
Logger.getLogger(FileChooserDemo.class.getName()).log(Level.SEVERE,
null,
ex);
} catch (InvocationTargetException ex) {
Logger.getLogger(FileChooserDemo.class.getName()).log(Level.SEVERE,
null,
ex);
}
}
private static class InsetPanel extends JPanel {
Insets i;
InsetPanel(Insets i) {
this.i = i;
}
@Override
public Insets getInsets() {
return i;
}
}
}