src/demo/share/jfc/SwingSet2/FileChooserDemo.java - platform/libcore - Git at Google

 /*
  *
  * Copyright (c) 2007, 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.
  */


 import javax.swing.*;
 import javax.swing.event.*;
 import javax.swing.text.*;
 import javax.swing.border.*;
 import javax.swing.colorchooser.*;
 import javax.swing.filechooser.*;
 import javax.accessibility.*;

 import java.awt.*;
 import java.awt.event.*;
 import java.beans.*;
 import java.util.*;
 import java.io.*;
 import java.applet.*;
 import java.net.*;

 /**
  * JFileChooserDemo
  *
  * @author Jeff Dinkins
  */
 public class FileChooserDemo extends DemoModule {
     JLabel theImage;
     Icon jpgIcon;
     Icon gifIcon;

     /**
      * main method allows us to run as a standalone demo.
      */
     public static void main(String[] args) {
         FileChooserDemo demo = new FileChooserDemo(null);
         demo.mainImpl();
     }

     /**
      * FileChooserDemo Constructor
      */
     public FileChooserDemo(SwingSet2 swingset) {
         // Set the title for this demo, and an icon used to represent this
         // demo inside the SwingSet2 app.
         super(swingset, "FileChooserDemo", "toolbar/JFileChooser.gif");
         createFileChooserDemo();
     }

     public void createFileChooserDemo() {
         theImage = new JLabel("");
         jpgIcon = createImageIcon("filechooser/jpgIcon.jpg", "jpg image");
         gifIcon = createImageIcon("filechooser/gifIcon.gif", "gif image");

         JPanel demoPanel = getDemoPanel();
         demoPanel.setLayout(new BoxLayout(demoPanel, BoxLayout.Y_AXIS));

         JPanel innerPanel = new JPanel();
         innerPanel.setLayout(new BoxLayout(innerPanel, BoxLayout.X_AXIS));

         demoPanel.add(Box.createRigidArea(VGAP20));
         demoPanel.add(innerPanel);
         demoPanel.add(Box.createRigidArea(VGAP20));

         innerPanel.add(Box.createRigidArea(HGAP20));

         // Create a panel to hold buttons
         JPanel buttonPanel = new JPanel() {
             public Dimension getMaximumSize() {
                 return new Dimension(getPreferredSize().width, super.getMaximumSize().height);
             }
         };
         buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.Y_AXIS));

         buttonPanel.add(Box.createRigidArea(VGAP15));
         buttonPanel.add(createPlainFileChooserButton());
         buttonPanel.add(Box.createRigidArea(VGAP15));
         buttonPanel.add(createPreviewFileChooserButton());
         buttonPanel.add(Box.createRigidArea(VGAP15));
         buttonPanel.add(createCustomFileChooserButton());
         buttonPanel.add(Box.createVerticalGlue());

         // Create a panel to hold the image
         JPanel imagePanel = new JPanel();
         imagePanel.setLayout(new BorderLayout());
         imagePanel.setBorder(new BevelBorder(BevelBorder.LOWERED));
         JScrollPane scroller = new JScrollPane(theImage);
         scroller.getVerticalScrollBar().setUnitIncrement(10);
         scroller.getHorizontalScrollBar().setUnitIncrement(10);
         imagePanel.add(scroller, BorderLayout.CENTER);

         // add buttons and image panels to inner panel
         innerPanel.add(buttonPanel);
         innerPanel.add(Box.createRigidArea(HGAP30));
         innerPanel.add(imagePanel);
         innerPanel.add(Box.createRigidArea(HGAP20));
     }

     public JFileChooser createFileChooser() {
         // create a filechooser
         JFileChooser fc = new JFileChooser();
         if (getSwingSet2() != null && getSwingSet2().isDragEnabled()) {
             fc.setDragEnabled(true);
         }

         // set the current directory to be the images directory
         File swingFile = new File("resources/images/About.jpg");
         if(swingFile.exists()) {
             fc.setCurrentDirectory(swingFile);
             fc.setSelectedFile(swingFile);
         }

         return fc;
     }


     public JButton createPlainFileChooserButton() {
         Action a = new AbstractAction(getString("FileChooserDemo.plainbutton")) {
             public void actionPerformed(ActionEvent e) {
                 JFileChooser fc = createFileChooser();

                 // show the filechooser
                 int result = fc.showOpenDialog(getDemoPanel());

                 // if we selected an image, load the image
                 if(result == JFileChooser.APPROVE_OPTION) {
                     loadImage(fc.getSelectedFile().getPath());
                 }
             }
         };
         return createButton(a);
     }

     public JButton createPreviewFileChooserButton() {
         Action a = new AbstractAction(getString("FileChooserDemo.previewbutton")) {
             public void actionPerformed(ActionEvent e) {
                 JFileChooser fc = createFileChooser();

                 // Add filefilter & fileview
                 javax.swing.filechooser.FileFilter filter = createFileFilter(
                     getString("FileChooserDemo.filterdescription"),
                     "jpg", "gif");
                 ExampleFileView fileView = new ExampleFileView();
                 fileView.putIcon("jpg", jpgIcon);
                 fileView.putIcon("gif", gifIcon);
                 fc.setFileView(fileView);
                 fc.addChoosableFileFilter(filter);
                 fc.setFileFilter(filter);

                 // add preview accessory
                 fc.setAccessory(new FilePreviewer(fc));

                 // show the filechooser
                 int result = fc.showOpenDialog(getDemoPanel());

                 // if we selected an image, load the image
                 if(result == JFileChooser.APPROVE_OPTION) {
                     loadImage(fc.getSelectedFile().getPath());
                 }
             }
         };
         return createButton(a);
     }

     JDialog dialog;
     JFileChooser fc;

     private javax.swing.filechooser.FileFilter createFileFilter(
             String description, String...extensions) {
         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;
     }

     public JButton createCustomFileChooserButton() {
         Action a = new AbstractAction(getString("FileChooserDemo.custombutton")) {
             public void actionPerformed(ActionEvent e) {
                 fc = createFileChooser();

                 // Add filefilter & fileview
                 javax.swing.filechooser.FileFilter filter = createFileFilter(
                     getString("FileChooserDemo.filterdescription"),
                     "jpg", "gif");
                 ExampleFileView fileView = new ExampleFileView();
                 fileView.putIcon("jpg", jpgIcon);
                 fileView.putIcon("gif", gifIcon);
                 fc.setFileView(fileView);
                 fc.addChoosableFileFilter(filter);

                 // add preview accessory
                 fc.setAccessory(new FilePreviewer(fc));

                 // remove the approve/cancel buttons
                 fc.setControlButtonsAreShown(false);

                 // make custom controls
                 //wokka
                 JPanel custom = new JPanel();
                 custom.setLayout(new BoxLayout(custom, BoxLayout.Y_AXIS));
                 custom.add(Box.createRigidArea(VGAP10));
                 JLabel description = new JLabel(getString("FileChooserDemo.description"));
                 description.setAlignmentX(JLabel.CENTER_ALIGNMENT);
                 custom.add(description);
                 custom.add(Box.createRigidArea(VGAP10));
                 custom.add(fc);

                 Action okAction = createOKAction();
                 fc.addActionListener(okAction);

                 JPanel buttons = new JPanel();
                 buttons.setLayout(new BoxLayout(buttons, BoxLayout.X_AXIS));
                 buttons.add(Box.createRigidArea(HGAP10));
                 buttons.add(createImageButton(createFindAction()));
                 buttons.add(Box.createRigidArea(HGAP10));
                 buttons.add(createButton(createAboutAction()));
                 buttons.add(Box.createRigidArea(HGAP10));
                 buttons.add(createButton(okAction));
                 buttons.add(Box.createRigidArea(HGAP10));
                 buttons.add(createButton(createCancelAction()));
                 buttons.add(Box.createRigidArea(HGAP10));
                 buttons.add(createImageButton(createHelpAction()));
                 buttons.add(Box.createRigidArea(HGAP10));

                 custom.add(buttons);
                 custom.add(Box.createRigidArea(VGAP10));

                 // show the filechooser
                 Frame parent = (Frame) SwingUtilities.getAncestorOfClass(Frame.class, getDemoPanel());
                 dialog = new JDialog(parent, getString("FileChooserDemo.dialogtitle"), true);
                 dialog.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
                 dialog.getContentPane().add(custom, BorderLayout.CENTER);
                 dialog.pack();
                 dialog.setLocationRelativeTo(getDemoPanel());
                 dialog.show();
             }
         };
         return createButton(a);
     }

     public Action createAboutAction() {
         return new AbstractAction(getString("FileChooserDemo.about")) {
             public void actionPerformed(ActionEvent e) {
                 File file = fc.getSelectedFile();
                 String text;
                 if(file == null) {
                     text = getString("FileChooserDemo.nofileselected");
                 } else {
                     text = "<html>" + getString("FileChooserDemo.thefile");
                     text += "<br><font color=green>" + file.getName() + "</font><br>";
                     text += getString("FileChooserDemo.isprobably") + "</html>";
                 }
                 JOptionPane.showMessageDialog(getDemoPanel(), text);
             }
         };
     }

     public Action createOKAction() {
         return new AbstractAction(getString("FileChooserDemo.ok")) {
             public void actionPerformed(ActionEvent e) {
                 dialog.dispose();
                 if (!e.getActionCommand().equals(JFileChooser.CANCEL_SELECTION)
                     && fc.getSelectedFile() != null) {

                     loadImage(fc.getSelectedFile().getPath());
                 }
             }
         };
     }

     public Action createCancelAction() {
         return new AbstractAction(getString("FileChooserDemo.cancel")) {
             public void actionPerformed(ActionEvent e) {
                 dialog.dispose();
             }
         };
     }

     public Action createFindAction() {
         Icon icon = createImageIcon("filechooser/find.gif", getString("FileChooserDemo.find"));
         return new AbstractAction("", icon) {
             public void actionPerformed(ActionEvent e) {
                 String result = JOptionPane.showInputDialog(getDemoPanel(), getString("FileChooserDemo.findquestion"));
                 if (result != null) {
                     JOptionPane.showMessageDialog(getDemoPanel(), getString("FileChooserDemo.findresponse"));
                 }
             }
         };
     }

     public Action createHelpAction() {
         Icon icon = createImageIcon("filechooser/help.gif", getString("FileChooserDemo.help"));
         return new AbstractAction("", icon) {
             public void actionPerformed(ActionEvent e) {
                 JOptionPane.showMessageDialog(getDemoPanel(), getString("FileChooserDemo.helptext"));
             }
         };
     }

     class MyImageIcon extends ImageIcon {
         public MyImageIcon(String filename) {
             super(filename);
         };
         public synchronized void paintIcon(Component c, Graphics g, int x, int y) {
             g.setColor(Color.white);
             g.fillRect(0,0, c.getWidth(), c.getHeight());
             if(getImageObserver() == null) {
                 g.drawImage(
                     getImage(),
                     c.getWidth()/2 - getIconWidth()/2,
                     c.getHeight()/2 - getIconHeight()/2,
                     c
                 );
             } else {
                 g.drawImage(
                     getImage(),
                     c.getWidth()/2 - getIconWidth()/2,
                     c.getHeight()/2 - getIconHeight()/2,
                     getImageObserver()
                 );
             }
         }
     }

     public void loadImage(String filename) {
         theImage.setIcon(new MyImageIcon(filename));
     }

     public JButton createButton(Action a) {
         JButton b = new JButton(a) {
             public Dimension getMaximumSize() {
                 int width = Short.MAX_VALUE;
                 int height = super.getMaximumSize().height;
                 return new Dimension(width, height);
             }
         };
         return b;
     }

     public JButton createImageButton(Action a) {
         JButton b = new JButton(a);
         b.setMargin(new Insets(0,0,0,0));
         return b;
     }
 }

 class FilePreviewer extends JComponent implements PropertyChangeListener {
     ImageIcon thumbnail = null;

     public FilePreviewer(JFileChooser fc) {
         setPreferredSize(new Dimension(100, 50));
         fc.addPropertyChangeListener(this);
         setBorder(new BevelBorder(BevelBorder.LOWERED));
     }

     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(prop == JFileChooser.SELECTED_FILE_CHANGED_PROPERTY) {
             if(isShowing()) {
                 loadImage((File) e.getNewValue());
                 repaint();
             }
         }
     }

     public void paint(Graphics g) {
         super.paint(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);
         }
     }
 }
	/*
	*
	* Copyright (c) 2007, 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.
	*/


	import javax.swing.*;
	import javax.swing.event.*;
	import javax.swing.text.*;
	import javax.swing.border.*;
	import javax.swing.colorchooser.*;
	import javax.swing.filechooser.*;
	import javax.accessibility.*;

	import java.awt.*;
	import java.awt.event.*;
	import java.beans.*;
	import java.util.*;
	import java.io.*;
	import java.applet.*;
	import java.net.*;

	/**
	* JFileChooserDemo
	*
	* @author Jeff Dinkins
	*/
	public class FileChooserDemo extends DemoModule {
	JLabel theImage;
	Icon jpgIcon;
	Icon gifIcon;

	/**
	* main method allows us to run as a standalone demo.
	*/
	public static void main(String[] args) {
	FileChooserDemo demo = new FileChooserDemo(null);
	demo.mainImpl();
	}

	/**
	* FileChooserDemo Constructor
	*/
	public FileChooserDemo(SwingSet2 swingset) {
	// Set the title for this demo, and an icon used to represent this
	// demo inside the SwingSet2 app.
	super(swingset, "FileChooserDemo", "toolbar/JFileChooser.gif");
	createFileChooserDemo();
	}

	public void createFileChooserDemo() {
	theImage = new JLabel("");
	jpgIcon = createImageIcon("filechooser/jpgIcon.jpg", "jpg image");
	gifIcon = createImageIcon("filechooser/gifIcon.gif", "gif image");

	JPanel demoPanel = getDemoPanel();
	demoPanel.setLayout(new BoxLayout(demoPanel, BoxLayout.Y_AXIS));

	JPanel innerPanel = new JPanel();
	innerPanel.setLayout(new BoxLayout(innerPanel, BoxLayout.X_AXIS));

	demoPanel.add(Box.createRigidArea(VGAP20));
	demoPanel.add(innerPanel);
	demoPanel.add(Box.createRigidArea(VGAP20));

	innerPanel.add(Box.createRigidArea(HGAP20));

	// Create a panel to hold buttons
	JPanel buttonPanel = new JPanel() {
	public Dimension getMaximumSize() {
	return new Dimension(getPreferredSize().width, super.getMaximumSize().height);
	}
	};
	buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.Y_AXIS));

	buttonPanel.add(Box.createRigidArea(VGAP15));
	buttonPanel.add(createPlainFileChooserButton());
	buttonPanel.add(Box.createRigidArea(VGAP15));
	buttonPanel.add(createPreviewFileChooserButton());
	buttonPanel.add(Box.createRigidArea(VGAP15));
	buttonPanel.add(createCustomFileChooserButton());
	buttonPanel.add(Box.createVerticalGlue());

	// Create a panel to hold the image
	JPanel imagePanel = new JPanel();
	imagePanel.setLayout(new BorderLayout());
	imagePanel.setBorder(new BevelBorder(BevelBorder.LOWERED));
	JScrollPane scroller = new JScrollPane(theImage);
	scroller.getVerticalScrollBar().setUnitIncrement(10);
	scroller.getHorizontalScrollBar().setUnitIncrement(10);
	imagePanel.add(scroller, BorderLayout.CENTER);

	// add buttons and image panels to inner panel
	innerPanel.add(buttonPanel);
	innerPanel.add(Box.createRigidArea(HGAP30));
	innerPanel.add(imagePanel);
	innerPanel.add(Box.createRigidArea(HGAP20));
	}

	public JFileChooser createFileChooser() {
	// create a filechooser
	JFileChooser fc = new JFileChooser();
	if (getSwingSet2() != null && getSwingSet2().isDragEnabled()) {
	fc.setDragEnabled(true);
	}

	// set the current directory to be the images directory
	File swingFile = new File("resources/images/About.jpg");
	if(swingFile.exists()) {
	fc.setCurrentDirectory(swingFile);
	fc.setSelectedFile(swingFile);
	}

	return fc;
	}


	public JButton createPlainFileChooserButton() {
	Action a = new AbstractAction(getString("FileChooserDemo.plainbutton")) {
	public void actionPerformed(ActionEvent e) {
	JFileChooser fc = createFileChooser();

	// show the filechooser
	int result = fc.showOpenDialog(getDemoPanel());

	// if we selected an image, load the image
	if(result == JFileChooser.APPROVE_OPTION) {
	loadImage(fc.getSelectedFile().getPath());
	}
	}
	};
	return createButton(a);
	}

	public JButton createPreviewFileChooserButton() {
	Action a = new AbstractAction(getString("FileChooserDemo.previewbutton")) {
	public void actionPerformed(ActionEvent e) {
	JFileChooser fc = createFileChooser();

	// Add filefilter & fileview
	javax.swing.filechooser.FileFilter filter = createFileFilter(
	getString("FileChooserDemo.filterdescription"),
	"jpg", "gif");
	ExampleFileView fileView = new ExampleFileView();
	fileView.putIcon("jpg", jpgIcon);
	fileView.putIcon("gif", gifIcon);
	fc.setFileView(fileView);
	fc.addChoosableFileFilter(filter);
	fc.setFileFilter(filter);

	// add preview accessory
	fc.setAccessory(new FilePreviewer(fc));

	// show the filechooser
	int result = fc.showOpenDialog(getDemoPanel());

	// if we selected an image, load the image
	if(result == JFileChooser.APPROVE_OPTION) {
	loadImage(fc.getSelectedFile().getPath());
	}
	}
	};
	return createButton(a);
	}

	JDialog dialog;
	JFileChooser fc;

	private javax.swing.filechooser.FileFilter createFileFilter(
	String description, String...extensions) {
	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;
	}

	public JButton createCustomFileChooserButton() {
	Action a = new AbstractAction(getString("FileChooserDemo.custombutton")) {
	public void actionPerformed(ActionEvent e) {
	fc = createFileChooser();

	// Add filefilter & fileview
	javax.swing.filechooser.FileFilter filter = createFileFilter(
	getString("FileChooserDemo.filterdescription"),
	"jpg", "gif");
	ExampleFileView fileView = new ExampleFileView();
	fileView.putIcon("jpg", jpgIcon);
	fileView.putIcon("gif", gifIcon);
	fc.setFileView(fileView);
	fc.addChoosableFileFilter(filter);

	// add preview accessory
	fc.setAccessory(new FilePreviewer(fc));

	// remove the approve/cancel buttons
	fc.setControlButtonsAreShown(false);

	// make custom controls
	//wokka
	JPanel custom = new JPanel();
	custom.setLayout(new BoxLayout(custom, BoxLayout.Y_AXIS));
	custom.add(Box.createRigidArea(VGAP10));
	JLabel description = new JLabel(getString("FileChooserDemo.description"));
	description.setAlignmentX(JLabel.CENTER_ALIGNMENT);
	custom.add(description);
	custom.add(Box.createRigidArea(VGAP10));
	custom.add(fc);

	Action okAction = createOKAction();
	fc.addActionListener(okAction);

	JPanel buttons = new JPanel();
	buttons.setLayout(new BoxLayout(buttons, BoxLayout.X_AXIS));
	buttons.add(Box.createRigidArea(HGAP10));
	buttons.add(createImageButton(createFindAction()));
	buttons.add(Box.createRigidArea(HGAP10));
	buttons.add(createButton(createAboutAction()));
	buttons.add(Box.createRigidArea(HGAP10));
	buttons.add(createButton(okAction));
	buttons.add(Box.createRigidArea(HGAP10));
	buttons.add(createButton(createCancelAction()));
	buttons.add(Box.createRigidArea(HGAP10));
	buttons.add(createImageButton(createHelpAction()));
	buttons.add(Box.createRigidArea(HGAP10));

	custom.add(buttons);
	custom.add(Box.createRigidArea(VGAP10));

	// show the filechooser
	Frame parent = (Frame) SwingUtilities.getAncestorOfClass(Frame.class, getDemoPanel());
	dialog = new JDialog(parent, getString("FileChooserDemo.dialogtitle"), true);
	dialog.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
	dialog.getContentPane().add(custom, BorderLayout.CENTER);
	dialog.pack();
	dialog.setLocationRelativeTo(getDemoPanel());
	dialog.show();
	}
	};
	return createButton(a);
	}

	public Action createAboutAction() {
	return new AbstractAction(getString("FileChooserDemo.about")) {
	public void actionPerformed(ActionEvent e) {
	File file = fc.getSelectedFile();
	String text;
	if(file == null) {
	text = getString("FileChooserDemo.nofileselected");
	} else {
	text = "<html>" + getString("FileChooserDemo.thefile");
	text += "<br><font color=green>" + file.getName() + "</font><br>";
	text += getString("FileChooserDemo.isprobably") + "</html>";
	}
	JOptionPane.showMessageDialog(getDemoPanel(), text);
	}
	};
	}

	public Action createOKAction() {
	return new AbstractAction(getString("FileChooserDemo.ok")) {
	public void actionPerformed(ActionEvent e) {
	dialog.dispose();
	if (!e.getActionCommand().equals(JFileChooser.CANCEL_SELECTION)
	&& fc.getSelectedFile() != null) {

	loadImage(fc.getSelectedFile().getPath());
	}
	}
	};
	}

	public Action createCancelAction() {
	return new AbstractAction(getString("FileChooserDemo.cancel")) {
	public void actionPerformed(ActionEvent e) {
	dialog.dispose();
	}
	};
	}

	public Action createFindAction() {
	Icon icon = createImageIcon("filechooser/find.gif", getString("FileChooserDemo.find"));
	return new AbstractAction("", icon) {
	public void actionPerformed(ActionEvent e) {
	String result = JOptionPane.showInputDialog(getDemoPanel(), getString("FileChooserDemo.findquestion"));
	if (result != null) {
	JOptionPane.showMessageDialog(getDemoPanel(), getString("FileChooserDemo.findresponse"));
	}
	}
	};
	}

	public Action createHelpAction() {
	Icon icon = createImageIcon("filechooser/help.gif", getString("FileChooserDemo.help"));
	return new AbstractAction("", icon) {
	public void actionPerformed(ActionEvent e) {
	JOptionPane.showMessageDialog(getDemoPanel(), getString("FileChooserDemo.helptext"));
	}
	};
	}

	class MyImageIcon extends ImageIcon {
	public MyImageIcon(String filename) {
	super(filename);
	};
	public synchronized void paintIcon(Component c, Graphics g, int x, int y) {
	g.setColor(Color.white);
	g.fillRect(0,0, c.getWidth(), c.getHeight());
	if(getImageObserver() == null) {
	g.drawImage(
	getImage(),
	c.getWidth()/2 - getIconWidth()/2,
	c.getHeight()/2 - getIconHeight()/2,
	c
	);
	} else {
	g.drawImage(
	getImage(),
	c.getWidth()/2 - getIconWidth()/2,
	c.getHeight()/2 - getIconHeight()/2,
	getImageObserver()
	);
	}
	}
	}

	public void loadImage(String filename) {
	theImage.setIcon(new MyImageIcon(filename));
	}

	public JButton createButton(Action a) {
	JButton b = new JButton(a) {
	public Dimension getMaximumSize() {
	int width = Short.MAX_VALUE;
	int height = super.getMaximumSize().height;
	return new Dimension(width, height);
	}
	};
	return b;
	}

	public JButton createImageButton(Action a) {
	JButton b = new JButton(a);
	b.setMargin(new Insets(0,0,0,0));
	return b;
	}
	}

	class FilePreviewer extends JComponent implements PropertyChangeListener {
	ImageIcon thumbnail = null;

	public FilePreviewer(JFileChooser fc) {
	setPreferredSize(new Dimension(100, 50));
	fc.addPropertyChangeListener(this);
	setBorder(new BevelBorder(BevelBorder.LOWERED));
	}

	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(prop == JFileChooser.SELECTED_FILE_CHANGED_PROPERTY) {
	if(isShowing()) {
	loadImage((File) e.getNewValue());
	repaint();
	}
	}
	}

	public void paint(Graphics g) {
	super.paint(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);
	}
	}
	}