Demonstration of File dialog boxes
// : c14:FileChooserTest.java
// Demonstration of File dialog boxes.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class FileChooserTest extends JFrame {
private JTextField filename = new JTextField(), dir = new JTextField();
private JButton open = new JButton("Open"), save = new JButton("Save");
public FileChooserTest() {
JPanel p = new JPanel();
open.addActionListener(new OpenL());
p.add(open);
save.addActionListener(new SaveL());
p.add(save);
Container cp = getContentPane();
cp.add(p, BorderLayout.SOUTH);
dir.setEditable(false);
filename.setEditable(false);
p = new JPanel();
p.setLayout(new GridLayout(2, 1));
p.add(filename);
p.add(dir);
cp.add(p, BorderLayout.NORTH);
}
class OpenL implements ActionListener {
public void actionPerformed(ActionEvent e) {
JFileChooser c = new JFileChooser();
// Demonstrate "Open" dialog:
int rVal = c.showOpenDialog(FileChooserTest.this);
if (rVal == JFileChooser.APPROVE_OPTION) {
filename.setText(c.getSelectedFile().getName());
dir.setText(c.getCurrentDirectory().toString());
}
if (rVal == JFileChooser.CANCEL_OPTION) {
filename.setText("You pressed cancel");
dir.setText("");
}
}
}
class SaveL implements ActionListener {
public void actionPerformed(ActionEvent e) {
JFileChooser c = new JFileChooser();
// Demonstrate "Save" dialog:
int rVal = c.showSaveDialog(FileChooserTest.this);
if (rVal == JFileChooser.APPROVE_OPTION) {
filename.setText(c.getSelectedFile().getName());
dir.setText(c.getCurrentDirectory().toString());
}
if (rVal == JFileChooser.CANCEL_OPTION) {
filename.setText("You pressed cancel");
dir.setText("");
}
}
}
public static void main(String[] args) {
run(new FileChooserTest(), 250, 110);
}
public static void run(JFrame frame, int width, int height) {
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(width, height);
frame.setVisible(true);
}
} ///:~
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