java课程设计--仿xp系统记事本

package MyPackage; import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.io.*; import javax.swing.filechooser.FileFilter; import javax.swing.text.BadLocationException; import javax.swing.undo.UndoManager; import javax.swing.border.EtchedBorder; public class NoteBook { /** * 我的记事本程序 * @author LiDan(李丹) Pujunlin(蒲军霖) * E-Mail: tance@live.cn * Adress: 河北邯郸河北工程大学计算机06级1班 * 河北邯郸河北工程大学计算机06级2班 * @version 1.0 * @param args */ public static void main(String[] args){ MyNoteBook mnb=new MyNoteBook(); mnb.setVisible(true); } } class MyNoteBook extends JFrame{ private static final long serialVersionUID = 1L; private JTextArea ta; private Container aaa; private JMenuItem newfile; private JMenuItem open; private JMenuItem save; private JMenuItem saveother; private JMenuItem exititem; private JMenuItem selectall; private JMenuItem cancel; private JMenuItem redo; private JMenuItem cut; private JMenuItem copy; private JMenuItem paste; private JMenuItem findstr; private JMenuItem next; private JMenuItem replace; private JMenuItem go; private JMenuItem delete; private JMenuItem dateinsert; private JMenuItem ziti; private JCheckBoxMenuItem statubar; private JMenuItem about; private JMenuItem newItemMenuItem ; private JMenuItem newItemMenuItem_1; private JMenuItem newItemMenuItem_2; private JMenuItem newItemMenuItem_3; private JMenuItem newItemMenuItem_4; private String filename="新建 文本文档--记事本 \"*.txt\""; //创建一个临时字符串作为退出时监听文档内容是否发生改变之用 private String ischanged=""; private UndoManager undoManager; private JLabel label; private FontChooser fontchooser; private int cancelnumber=0; public MyNoteBook(){ setTitle(filename); setSize(577,465); //设置窗口关闭的默认操作 setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE); //让窗口居中显示 Dimension screensize=Toolkit.getDefaultToolkit().getScreenSize(); Dimension framesize=getSize(); if(framesize.width>screensize.width) framesize.width=screensize.width; if(framesize.height>screensize.height) framesize.height=screensize.height; setLocation((screensize.width-framesize.width)/2,(screensize.height-framesize.height)/2); //设置图标 Image img=Toolkit.getDefaultToolkit().getImage("maizang.gif"); setIconImage(img); ta=new JTextArea(); ta.setBorder(new EtchedBorder(EtchedBorder.LOWERED)); //监听文本域中光标的移动 ta.addCaretListener(new CaretListener() { public void caretUpdate(final CaretEvent arg0) { position(); } }); //为文档注册撤销监听器 undoManager = new UndoManager(); ta.getDocument().addUndoableEditListener(undoManager); //为文档注册一个文本变化的监听器 ta.getDocument().addDocumentListener(new DocumentListener(){ public void changedUpdate(DocumentEvent e) { // TODO Auto-generated method stub } public void insertUpdate(DocumentEvent e) { // TODO Auto-generated method stub judgeUsed(); } public void removeUpdate(DocumentEvent e) { // TODO Auto-generated method stub judgeUsed(); } }); // 添加键盘输入监听器 ta.addFocusListener(new MyFocusAdapter()); aaa=getContentPane(); aaa.add(ta); final JScrollPane scrollpane=new JScrollPane(); aaa.add(scrollpane,null); //为文本域添加滚动条 scrollpane.getViewport().add(ta,null); final JPopupMenu popupMenu = new JPopupMenu(); popupMenu.setAutoscrolls(true); addPopup(ta, popupMenu); //右键菜单选项 newItemMenuItem_4 = new JMenuItem(); newItemMenuItem_4.setText("全选(A)"); newItemMenuItem_4.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_A, InputEvent.CTRL_MASK)); newItemMenuItem_4.addActionListener(new AbstractAction(){ private static final long serialVersionUID = 3L; public void actionPerformed(ActionEvent e){ ta.selectAll(); } }); popupMenu.add(newItemMenuItem_4); newItemMenuItem_4.setEnabled(false); newItemMenuItem_4.setMnemonic('A'); newItemMenuItem = new JMenuItem(); newItemMenuItem.setText("撤销(U)"); newItemMenuItem.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_Z, InputEvent.CTRL_MASK)); newItemMenuItem.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { if(undoManager.canUndo()) { try { undoManager.undo(); } catch(Exception er){} } } }); newItemMenuItem.setEnabled(false); newItemMenuItem.setMnemonic('U'); popupMenu.add(newItemMenuItem); popupMenu.addSeparator(); newItemMenuItem_1 = new JMenuItem(); newItemMenuItem_1.setText("剪切(T)"); newItemMenuItem_1.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_X, InputEvent.CTRL_MASK)); newItemMenuItem_1.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { ta.cut(); } }); newItemMenuItem_1.setEnabled(false); newItemMenuItem_1.setMnemonic('T'); popupMenu.add(newItemMenuItem_1); newItemMenuItem_2 = new JMenuItem(); newItemMenuItem_2.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { ta.copy(); } }); newItemMenuItem_2.setText("复制(C)"); newItemMenuItem_2.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_C, InputEvent.CTRL_MASK)); newItemMenuItem_2.setEnabled(false); newItemMenuItem_2.setMnemonic('C'); popupMenu.add(newItemMenuItem_2); newItemMenuItem_3 = new JMenuItem(); newItemMenuItem_3.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { ta.paste(); } }); newItemMenuItem_3.setText("粘贴(V)"); newItemMenuItem_3.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_V, InputEvent.CTRL_MASK)); popupMenu.add(newItemMenuItem_3); newItemMenuItem_3.setMnemonic('V'); popupMenu.addSeparator(); final JMenuItem newItemMenuItem_4 = new JMenuItem(); newItemMenuItem_4.setText("删除(D)"); newItemMenuItem_4.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_D,InputEvent.CTRL_MASK)); newItemMenuItem_4.setMnemonic('D'); popupMenu.add(newItemMenuItem_4); //添加菜单栏 JMenuBar menubar=new JMenuBar(); setJMenuBar(menubar); /** 添加菜单项"文件" */ JMenu menu1=new JMenu("文件(F)"); menu1.setMnemonic('F'); //添加菜单项"新建(N)"并添加公共的事件监听器 newfile=menu1.add(new ShowAction("新建(N)")); //设置菜单键的快捷键 newfile.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_N, InputEvent.CTRL_MASK)); newfile.setMnemonic('N'); //添加菜单项"打开(o)" open=menu1.add(new ShowAction("打开(O)")); open.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_O, InputEvent.CTRL_MASK)); open.setMnemonic('O'); //添加保存(S)菜单项 save=menu1.add(new ShowAction("保存(S)")); save.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_S, InputEvent.CTRL_MASK)); save.setEnabled(false); save.setMnemonic('S'); //添加另存为菜单项 saveother=menu1.add(new ShowAction("另存为(A)")); saveother.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_A, InputEvent.CTRL_MASK)); saveother.setEnabled(false); saveother.setMnemonic('A'); menu1.addSeparator(); exititem=menu1.add(new ShowAction("退出(T)")); exititem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_T,InputEvent.CTRL_MASK)); exititem.setMnemonic('T'); menubar.add(menu1); /** * 编辑菜单栏 * 功能:全选,撤销,剪切,复制,粘贴,删除,查找,替换 * */ JMenu menu2=new JMenu("编辑(E)"); menu2.setMnemonic('E'); /**全选*/ selectall=menu2.add(new ShowAction("全选(A)")); selectall.setAccelerator(KeyStroke.getKeyStroke( KeyEvent.VK_A, InputEvent.CTRL_MASK)); selectall.setEnabled(false); selec