/*
*
* 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
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* 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);
}
}
}