Hi all
I have made this small text editor and it works fine. I would just like you too look over it and give me any tips and things, that would make the code better (more acceptable to you).
import javax.swing.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
public class FrostEditor extends JFrame
{
private JTextArea textArea;
private Action _openAction = new OpenAction();
private Action _saveAction = new SaveAction();
private Action _aboutAction = new AboutAction();
private JFileChooser _fileChooser = new JFileChooser();
public FrostEditor()
{
//Arrange the Editing Pane
textArea = new JTextArea(20, 50);
textArea.setEditable(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JScrollPane scrollingText = new JScrollPane(textArea);
//Set all the panel to size and add the components
JPanel content = new JPanel();
content.setLayout(new BorderLayout());
content.add(textArea, BorderLayout.CENTER);
setContentPane(content);
//Set the file menu bits
JMenuBar menu = new JMenuBar();
JMenu file = new JMenu("File");
menu.add(file);
file.add(_openAction);
file.add(_saveAction);
//set the help menu bits
JMenu helpMenu = menu.add(new JMenu("Help"));
helpMenu.add(_aboutAction);
// Set the menuBar for the JFrame
setJMenuBar(menu);
setTitle("Frost Editor");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pack();
}
public static void main(String[] args)
{
FrostEditor editor = new FrostEditor();
editor.setLocationRelativeTo(null); // Center window.
editor.setVisible(true);
}
class OpenAction extends AbstractAction {
//============================================= constructor
public OpenAction() {
super("Open...");
putValue(MNEMONIC_KEY, new Integer('O'));
}
//========================================= actionPerformed
public void actionPerformed(ActionEvent e) {
int retval = _fileChooser.showOpenDialog(FrostEditor.this);
if (retval == JFileChooser.APPROVE_OPTION) {
File f = _fileChooser.getSelectedFile();
try {
FileReader reader = new FileReader(f);
textArea.read(reader, ""); // Use TextComponent read
} catch (IOException ioex) {
System.out.println(e);
System.exit(1);
}
}
}
}
//////////////////////////////////////////////////// inner class SaveAction
class SaveAction extends AbstractAction {
//============================================= constructor
SaveAction() {
super("Save...");
putValue(MNEMONIC_KEY, new Integer('S'));
}
//========================================= actionPerformed
public void actionPerformed(ActionEvent e) {
int retval = _fileChooser.showSaveDialog(FrostEditor.this);
if (retval == JFileChooser.APPROVE_OPTION) {
File f = _fileChooser.getSelectedFile();
try {
FileWriter writer = new FileWriter(f);
textArea.write(writer); // Use TextComponent write
} catch (IOException ioex) {
JOptionPane.showMessageDialog(FrostEditor.this, ioex);
System.exit(1);
}
}
}
}
class AboutAction extends AbstractAction
{
public AboutAction()
{
super("About");
}
public void actionPerformed(ActionEvent e)
{
JFrame About = new JFrame();
JLabel label = new JLabel("Author: Harry Angell");
JLabel label2 = new JLabel("Released under the MIT license");
JLabel label3 = new JLabel ("http://frost-editor.bountysource.com");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
About.setTitle("Frost Editor V1.10");
About.setVisible(true);
About.setSize(250, 120);
About.getContentPane().setLayout(new FlowLayout());
About.getContentPane().add(label);
About.getContentPane().add(label2);
About.getContentPane().add(label3);
//set the frame's location on screen
Toolkit toolkit = Toolkit.getDefaultToolkit();
Dimension screenSize = toolkit.getScreenSize();
int x = (screenSize.width - About.getWidth()) / 2;
int y = (screenSize.height - About.getHeight()) / 2;
About.setLocation(x, y);
}
}
}Many thanks
HLA91
