package com.hcqm.software;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import javax.swing.JComponent;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
import javax.swing.border.EmptyBorder;
public class Notepad extends JFrame {
/**
* 功能：记事本能打开保存(快捷键)、保存(快捷键)、另存为 点击关闭的时候如果没有保存则提示是否需要保存
*
* 存在的bug：另存为的时候没有显示默认的名字
*/
private static final long serialVersionUID = 1L;
private JPanel contentPane;
private File file = new File("新建文件.txt");
private JTextArea text = null;
private boolean isSave = true;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Notepad frame = new Notepad();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Notepad() {
text = new JTextArea();
this.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
// TODO Auto-generated method stub
super.windowClosing(e);
if (isSave) {
int s = JOptionPane.showConfirmDialog(null, "保存?");
if (s == 0) {
sSave();
}
System.exit(0);
}
}
});
// 添加快捷键方法一：registerKeyboardAction
// 打开快捷键
// text.registerKeyboardAction(new ActionListener() {
// @Override
// public void actionPerformed(ActionEvent e) {
// oSave();
// }
// }, KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.CTRL_DOWN_MASK),
// JComponent.WHEN_IN_FOCUSED_WINDOW);
// 保存快捷键
// 如果沒有打开过文件则另存为，否则保存就行
// text.registerKeyboardAction(new ActionListener() {
// @Override
// public void actionPerformed(ActionEvent e) {
// sSave();
// }
// }, KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_DOWN_MASK),
// JComponent.WHEN_IN_FOCUSED_WINDOW);
// 添加快捷键方法二
text.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
super.keyPressed(e);
if (e.isControlDown() && e.getKeyCode() == KeyEvent.VK_O) {
oSave();
}
}
});
text.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
super.keyPressed(e);
if (e.isControlDown() && e.getKeyCode() == KeyEvent.VK_S) {
sSave();
}
}
});
setIconImage(Toolkit.getDefaultToolkit().getImage("src\\resources\\images\\1.png"));
setBackground(new Color(0, 255, 255));
setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 14));
setForeground(Color.RED);
setTitle("Notepad");
setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
setBounds(100, 100, 924, 637);
JMenuBar menuBar = new JMenuBar();
menuBar.setForeground(new Color(0, 0, 0));
menuBar.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
setJMenuBar(menuBar);
JMenu mnf = new JMenu("文件(F)");
mnf.setForeground(new Color(0, 0, 0));
mnf.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
menuBar.add(mnf);
JMenuItem open = new JMenuItem("打开(O)... Ctrl+O");
open.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser fc = new JFileChooser();
fc.showOpenDialog(null);
File theFile = fc.getSelectedFile();
file = theFile;
// 把文件内容读取到text中
StringBuilder sb = new StringBuilder();
getMessage(file, sb);
text.setText(sb.toString());
}
});
open.setForeground(new Color(0, 0, 0));
open.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
mnf.add(open);
JMenuItem save = new JMenuItem("保存(S) Ctrl+S");
save.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
save(file.getPath(), text.getText());
}
});
save.setForeground(new Color(0, 0, 0));
save.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
mnf.add(save);
JMenuItem saveAs = new JMenuItem("另存为(A)...");
saveAs.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser fc = new JFileChooser();
fc.showSaveDialog(null);
String saveAsPath = fc.getSelectedFile().getAbsolutePath();
save(saveAsPath, text.getText());
}
});
saveAs.setForeground(new Color(0, 0, 0));
saveAs.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
mnf.add(saveAs);
JMenu mne = new JMenu("编辑(E)");
mne.setForeground(new Color(0, 0, 0));
mne.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
menuBar.add(mne);
JMenu mno = new JMenu("格式(O)");
mno.setForeground(new Color(0, 0, 0));
mno.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
menuBar.add(mno);
JMenu mnv = new JMenu("查看(V)");
mnv.setForeground(new Color(0, 0, 0));
mnv.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
menuBar.add(mnv);
JMenu mnh = new JMenu("帮助(H)");
mnh.setForeground(new Color(0, 0, 0));
mnh.setFont(new Font("Microsoft YaHei UI Light", Font.PLAIN, 20));
menuBar.add(mnh);
contentPane = new JPanel();
contentPane.setForeground(new Color(255, 0, 51));
contentPane.setBackground(new Color(255, 204, 255));
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(new BorderLayout(0, 0));
// 注意：滚动条应该添加在包裹JTextArea的容器上，而不是添加到JTextArea本身上面
JScrollPane scrollPane = new JScrollPane();
contentPane.add(scrollPane, BorderLayout.CENTER);
scrollPane.setViewportView(text);
text.setWrapStyleWord(true);
text.setLineWrap(true);
text.setFont(new Font("Microsoft YaHei UI Light", Font.BOLD, 22));
}
protected void oSave() {
JFileChooser fc = new JFileChooser();
fc.showOpenDialog(null);
File theFile = fc.getSelectedFile();
if (theFile != null) {
file = theFile;
// 把文件内容读取到text中
StringBuilder sb = new StringBuilder();
getMessage(file, sb);
text.setText(sb.toString());
}
}
protected void sSave() {
if (file.getName().equals("新建文件.txt")) {
JFileChooser fc = new JFileChooser();
fc.showSaveDialog(null);
File ff = fc.getSelectedFile();
if (ff != null) {
String saveAsPath = fc.getSelectedFile().getAbsolutePath();
save(saveAsPath, text.getText());
}
} else {
save(file.getPath(), text.getText());
}
}
protected void save(String filePath2, String text) {
OutputStreamWriter osw = null;
try {
osw = new OutputStreamWriter(new BufferedOutputStream(new FileOutputStream(filePath2)), "utf-8");
osw.write(text);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
osw.close();
} catch (IOException e) {
e.printStackTrace();
}
}
// 当有内容保存时改变变量
isSave = false;
}
protected void getMessage(File file, StringBuilder sb) {
InputStreamReader bis = null;
try {
bis = new InputStreamReader(new BufferedInputStream(new FileInputStream(file)), "utf-8");
char[] c = new char[100];
int len = 0;
while ((len = bis.read(c)) != -1) {
sb.append(c, 0, len);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
bis.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
注意：在这里类似与JMenuBar和JMunuItem添加的点击事件只能是actionListner,而不能是mouseClicked!这里是什么原因，具体我也不知...