毕业设计（论文）-JAVA记事本源代码.doc

/JAVA记事本源代码import java.awt.*;import java.awt.event.*;import java.text.*;import java.util.*;import java.io.*;import javax.swing.undo.*;import javax.swing.*;import javax.swing.event.*;import java.awt.datatransfer.*;import java.util.List;public class Notepad4 extends JFrame implements ActionListener, DocumentListener JMenu mFile, mEdit, mMode, mView, mHelp;/ -文件菜单JMenuItem mFile_New, mFile_Open, mFile_Save, mFile_ASave, mFile_Print, mFile_Exit;/ -编辑菜单JMenuItem mEdit_Undo, mEdit_Cut, mEdit_Copy, mEdit_Paste, mEdit_Del, mEdit_Search, mEdit_SearchNext, mEdit_Replace, mEdit_Turnto, mEdit_SelectAll, mEdit_TimeDate;/ -格式菜单JCheckBoxMenuItem formatMenu_LineWrap;JMenu formatMenu_Color;JMenuItem formatMenu_Font, formatMenu_Color_FgColor, formatMenu_Color_BgColor;/ -查看菜单JCheckBoxMenuItem viewMenu_Status;/ -帮助菜单JMenuItem mHelp_HelpTopics, mHelp_About;/ -弹出菜单级菜单项JPopupMenu popupMenu;JMenuItem popupMenu_Undo, popupMenu_Cut, popupMenu_Copy, popupMenu_Paste, popupMenu_Delete, popupMenu_SelectAll;/ -工具栏按钮JButton newButton, openButton, saveButton, saveAsButton, printButton, undoButton, redoButton, cutButton, copyButton, pasteButton, deleteButton, searchButton, timeButton, fontButton, boldButton,italicButton, fgcolorButton, bgcolorButton, helpButton;/ 文本编辑区域static JTextArea Text;/ 状态栏标签JLabel statusLabel1, statusLabel2, statusLabel3;JToolBar statusBar;/ -系统剪贴板Toolkit toolKit = Toolkit.getDefaultToolkit();Clipboard clipBoard = toolKit.getSystemClipboard();/ -创建撤消操作管理器protected UndoManager undo = new UndoManager();protected UndoableEditListener undoHandler = new UndoHandler();/ -其它变量boolean isNewFile = true; / 是否新文件(未保存过的)File currentFile; / 当前文件名String oldValue; / 存放编辑区原来的内容，用于比较文本是否有改动JButton fontOkButton; / 字体设置里的确定按钮/ -设置编辑区默认字体protected Font defaultFont = new Font(宋体, Font.PLAIN, 12);GregorianCalendar time = new GregorianCalendar();int hour = time.get(Calendar.HOUR_OF_DAY);int min = time.get(Calendar.MINUTE);int second = time.get(Calendar.SECOND);File saveFileName = null, fileName = null;public Notepad4() super(VXBB的记事本);setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);Container container = getContentPane();/ System.out.println(Text.getDragEnabled(); /支持自动拖放JScrollPane scroll = new JScrollPane(Text);scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);scroll.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);Text.setWrapStyleWord(true); / 设置单词在一行不足容纳时换行Text.setLineWrap(true);Text.setFont(defaultFont); / 设置编辑区默认字体Text.setBackground(Color.white); / 设置编辑区默认背景色Text.setForeground(Color.black); / 设置编辑区默认前景色oldValue = Text.getText(); / 获取原文本编辑区的内容/ -编辑区注册事件监听Text.getDocument().addUndoableEditListener(undoHandler); / 添加负责通知任何更改的撤消侦听器Text.getDocument().addDocumentListener(this); / 添加负责通知任何更改的文档侦听器JMenuBar MenuBar = new JMenuBar();mFile = new JMenu(文件(F), true); / 创建菜单mEdit = new JMenu(编辑(E), true);mMode = new JMenu(格式(O), true);mView = new JMenu(查看(V), true);mHelp = new JMenu(帮助(H), true);mEdit.addActionListener(new ActionListener() / 注册事件监听public void actionPerformed(ActionEvent e) checkMenuItemEnabled(); / 设置剪切、复制、粘贴、删除等功能的可用性);mFile.setMnemonic(F);mEdit.setMnemonic(E);mMode.setMnemonic(O);mView.setMnemonic(V);mHelp.setMnemonic(H);MenuBar.add(mFile);MenuBar.add(mEdit);MenuBar.add(mMode);MenuBar.add(mView);MenuBar.add(mHelp);/ -文件菜单mFile_New = new JMenuItem(新建(N), N);mFile_Open = new JMenuItem(打开(O), O);mFile_Save = new JMenuItem(保存(S), S);mFile_ASave = new JMenuItem(另存为(A), A);mFile_Print = new JMenuItem(打印(P), P);mFile_Exit = new JMenuItem(退出(X), X);mFile_New.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_N, InputEvent.CTRL_MASK);mFile_Open.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_O, InputEvent.CTRL_MASK);mFile_Save.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, InputEvent.CTRL_MASK);mFile_Print.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_P, InputEvent.CTRL_MASK);mFile_New.addActionListener(this); / 注册事件监听mFile_Open.addActionListener(this);mFile_Save.addActionListener(this);mFile_ASave.addActionListener(this);mFile_Print.addActionListener(this);mFile_Exit.addActionListener(this);mFile.add(mFile_New); / 添加菜单项mFile.add(mFile_Open);mFile.add(mFile_Save);mFile.add(mFile_ASave);mFile.addSeparator(); / 添加分割线mFile.add(mFile_Print);mFile.addSeparator(); / 添加分割线mFile.add(mFile_Exit);/ -编辑菜单mEdit_Undo = new JMenuItem(撤消(U), U);mEdit_Cut = new JMenuItem(剪切(T), T);mEdit_Copy = new JMenuItem(复制(C), C);mEdit_Paste = new JMenuItem(粘贴(P), P);mEdit_Del = new JMenuItem(删除(L), L);mEdit_Search = new JMenuItem(查找(F), F);mEdit_SearchNext = new JMenuItem(查找下一个(N), N);mEdit_Replace = new JMenuItem(替换(R), R);mEdit_Turnto = new JMenuItem(转到(G), G);mEdit_SelectAll = new JMenuItem(全选(A), A);mEdit_TimeDate = new JMenuItem(时间/日期(D), D);mEdit_Cut.setEnabled(false);mEdit_Undo.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z, InputEvent.CTRL_MASK);mEdit_Cut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_MASK);mEdit_Copy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK);mEdit_Paste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_MASK);mEdit_Del.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0);mEdit_Search.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F, InputEvent.CTRL_MASK);mEdit_SearchNext.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F3, 0);mEdit_Replace.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_H, InputEvent.CTRL_MASK);mEdit_Turnto.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_G, InputEvent.CTRL_MASK);mEdit_SelectAll.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_A, InputEvent.CTRL_MASK);mEdit_TimeDate.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F5, 0);mEdit_Undo.addActionListener(this); / 注册事件监听mEdit_Cut.addActionListener(this);mEdit_Copy.addActionListener(this);mEdit_Paste.addActionListener(this);mEdit_Del.addActionListener(this);mEdit_Search.addActionListener(this);mEdit_SearchNext.addActionListener(this);mEdit_Replace.addActionListener(this);mEdit_Turnto.addActionListener(this);mEdit_SelectAll.addActionListener(this);mEdit_TimeDate.addActionListener(this);mEdit.add(mEdit_Undo); / 添加菜单项mEdit.addSeparator(); / 添加分割线mEdit.add(mEdit_Cut);mEdit.add(mEdit_Copy);mEdit.add(mEdit_Paste);mEdit.add(mEdit_Del);mEdit.addSeparator();mEdit.add(mEdit_Search);mEdit.add(mEdit_SearchNext);mEdit.add(mEdit_Replace);mEdit.add(mEdit_Turnto);mEdit.addSeparator();mEdit.add(mEdit_SelectAll);mEdit.add(mEdit_TimeDate);/ -格式菜单formatMenu_LineWrap = new JCheckBoxMenuItem(自动换行(W);formatMenu_LineWrap.setMnemonic(W);formatMenu_LineWrap.setState(true);formatMenu_Font = new JMenuItem(字体(F), F);formatMenu_Color = new JMenu(颜色);formatMenu_Color_FgColor = new JMenuItem(字体颜色);formatMenu_Color_BgColor = new JMenuItem(背景颜色);formatMenu_LineWrap.addActionListener(this); / 注册事件监听formatMenu_Font.addActionListener(this);formatMenu_Color_FgColor.addActionListener(this);formatMenu_Color_BgColor.addActionListener(this);mMode.add(formatMenu_LineWrap); / 添加菜单项mMode.addSeparator();mMode.add(formatMenu_Font);mMode.add(formatMenu_Color);formatMenu_Color.add(formatMenu_Color_FgColor);formatMenu_Color.add(formatMenu_Color_BgColor);/ -查看菜单viewMenu_Status = new JCheckBoxMenuItem(状态栏(S);viewMenu_Status.setMnemonic(S);viewMenu_Status.setState(true);viewMenu_Status.addActionListener(this);mView.add(viewMenu_Status);/ -帮助菜单mHelp_HelpTopics = new JMenuItem(帮助(H), H);mHelp_About = new JMenuItem(关于(A), A);mHelp_HelpTopics.addActionListener(this);mHelp_About.addActionListener(this);mHelp.add(mHelp_HelpTopics);mHelp.addSeparator(); / 添加分割线mHelp.add(mHelp_About);/ -创建右键弹出菜单popupMenu = new JPopupMenu();popupMenu_Undo = new JMenuItem(撤消(U), U);popupMenu_Cut = new JMenuItem(剪切(T), T);popupMenu_Copy = new JMenuItem(复制(C), C);popupMenu_Paste = new JMenuItem(粘贴(P), P);popupMenu_Delete = new JMenuItem(删除(D), D);popupMenu_SelectAll = new JMenuItem(全选(A), A);popupMenu_Undo.setEnabled(false); / 撤消选项初始设为不可用/ -向右键菜单添加菜单项和分隔符popupMenu.add(popupMenu_Undo);popupMenu.addSeparator();popupMenu.add(popupMenu_Cut);popupMenu.add(popupMenu_Copy);popupMenu.add(popupMenu_Paste);popupMenu.add(popupMenu_Delete);popupMenu.addSeparator();popupMenu.add(popupMenu_SelectAll);/ -右键菜单注册事件popupMenu_Undo.addActionListener(this);popupMenu_Cut.addActionListener(this);popupMenu_Copy.addActionListener(this);popupMenu_Paste.addActionListener(this);popupMenu_Delete.addActionListener(this);popupMenu_SelectAll.addActionListener(this);/ -文本编辑区注册右键菜单事件Text.addMouseListener(new MouseAdapter() public void mousePressed(MouseEvent e) checkForTriggerEvent(e);public void mouseReleased(MouseEvent e) checkForTriggerEvent(e);private void checkForTriggerEvent(MouseEvent e) if (e.isPopupTrigger()popupMenu.show(e.getComponent(), e.getX(), e.getY();/ 在组件调用者的坐标空间中的位置/ X、Y/ 显示弹出菜单。else statusLabel3.setText(当前光标所在行数: + getlineNumber();checkMenuItemEnabled(); / 设置剪切、复制、粘贴、删除等功能的可用性Text.requestFocus(); / 编辑区获取焦点);/ -创建工具栏JPanel toolBar = new JPanel();toolBar.setLayout(new FlowLayout(FlowLayout.LEFT);Icon newIcon = new ImageIcon(Icons/new.gif);Icon openIcon = new ImageIcon(Icons/open.gif);Icon saveIcon = new ImageIcon(Icons/save.gif);Icon saveAsIcon = new ImageIcon(Icons/saveas.gif);Icon printIcon = new ImageIcon(Icons/print.gif);Icon undoIcon = new ImageIcon(Icons/undo.gif);Icon cutIcon = new ImageIcon(Icons/cut.gif);Icon copyIcon = new ImageIcon(Icons/copy.gif);Icon pasteIcon = new ImageIcon(Icons/paste.gif);Icon deleteIcon = new ImageIcon(Icons/delete.gif);Icon searchIcon = new ImageIcon(Icons/search.gif);Icon timeIcon = new ImageIcon(Icons/time.gif);Icon fontIcon = new ImageIcon(Icons/font.gif);Icon boldIcon = new ImageIcon(Icons/bold.gif);Icon italicIcon = new ImageIcon(Icons/italic.gif);Icon bgcolorIcon = new ImageIcon(Icons/bgcolor.gif);Icon fgcolorIcon = new ImageIcon(Icons/fgcolor.gif);Icon helpIcon = new ImageIcon(Icons/help.gif);newButton = new JButton(newIcon);openButton = new JButton(openIcon);saveButton = new JButton(saveIcon);saveAsButton = new JButton(saveAsIcon);printButton = new JButton(printIcon);undoButton = new JButton(undoIcon);undoButton.setEnabled(false);cutButton = new JButton(cutIcon);cutButton.setEnabled(false);copyButton = new JButton(copyIcon);copyButton.setEnabled(false);pasteButton = new JButton(pasteIcon);pasteButton.setEnabled(false);deleteButton = new JButton(deleteIcon);deleteButton.setEnabled(false);searchButton = new JButton(searchIcon);timeButton = new JButton(timeIcon);fontButton = new JButton(fontIcon);boldButton = new JButton(boldIcon);italicButton = new JButton(italicIcon);fgcolorButton = new JButton(fgcolorIcon);bgcolorButton = new JButton(bgcolorIcon);helpButton = new JButton(helpIcon);newButton.setPreferredSize(new Dimension(22, 22);openButton.setPreferredSize(new Dimension(22, 22);saveButton.setPreferredSize(new Dimension(22, 22);saveAsButton.setPreferredSize(new Dimension(22, 22);printButton.setPreferredSize(new Dimension(22, 22);undoButton.setPreferredSize(new Dimension(22, 22);cutButton.setPreferredSize(new Dimension(22, 22);copyButton.setPreferredSize(new Dimension(22, 22);pasteButton.setPreferredSize(new Dimension(22, 22);deleteButton.setPreferredSize(new Dimension(22, 22);searchButton.setPreferredSize(new Dimension(22, 22);timeButton.setPreferredSize(new Dimension(22, 22);fontButton.setPreferredSize(new Dimension(22, 22);boldButton.setPreferredSize(new Dimension(22, 22);italicButton.setPreferredSize(new Dimension(22, 22);fgcolorButton.setPreferredSize(new Dimension(22, 22);bgcolorButton.setPreferredSize(new Dimension(22, 22);helpButton.setPreferredSize(new Dimension(22, 22);/ -注册工具栏按钮事件newButton.addActionListener(this);openButton.addActionListener(this);saveButton.addActionListener(this);saveAsButton.addActionListener(this);printButton.addActionListener(this);undoButton.addActionListener(this);cutButton.addActionListener(this);copyButton.addActionListener(this);pasteButton.addActionListener(this);deleteButton.addActionListener(this);searchButton.addActionListener(this);timeButton.addActionListener(this);fontButton.addActionListener(this);boldButton.addActionListener(this);italicButton.addActionListener(this);fgcolorButton.addActionListener(this);bgcolorButton.addActionListener(this);helpButton.addActionListener(this);/ -设置按钮提示文字newButton.setToolTipText(新建);openButton.setToolTipText(打开);saveButton.setToolTipText(保存);saveAsButton.setToolTipText(另存为);printButton.setToolTipText(打印);undoButton.setToolTipText(撤消);cutButton.setToolTipText(剪切);copyButton.setToolTipText(复制);pasteButton.setToolTipText(粘贴);deleteButton.setToolTipText(删除所选);searchButton.setToolTipText(查找与替换);timeButton.setToolTipText(插入时间/日期);fontButton.setToolTipText(设置字体);boldButton.setToolTipText(粗体);italicButton.setToolTipText(斜体);fgcolorButton.setToolTipText(设置字体颜色);bgcolorButton.setToolTipText(设置背景颜色);helpButton.setToolTipText(帮助);/ 设置撤消、重做、剪切、复制、粘贴、删除等工具栏按钮不可用时的图片(灰色)undoButton.setDisabledIcon(new ImageIcon(Icons/undo1.gif);cutButton.setDisabledIcon(new ImageIcon(Icons/cut1.gif);copyButton.setDisabledIcon(new ImageIcon(Icons/copy1.gif);pasteButton.setDisabledIcon(new ImageIcon(Icons/paste1.gif);deleteButton.setDisabledIcon(new ImageIcon(Icons/delete1.gif);/ -向工具栏添加按钮toolBar.add(newButton);toolBar.add(openButton);toolBar.add(saveButton);toolBar.add(saveAsButton);toolBar.add(printButton);toolBar.add(undoButton);toolBar.add(cutButton);toolBar.add(copyButton);toolBar.add(pasteButton);toolBar.add(deleteButton);toolBar.add(searchButton);toolBar.add(timeButton);toolBar.add(fontButton);toolBar.add(boldButton);toolBar.add(italicButton);toolBar.add(fgcolorButton);toolBar.add(bgcolorButton);toolBar.add(helpButton);/ -向容器添加工具栏container.add(toolBar, BorderLayout.NORTH);/ -创建和添加状态栏statusBar = new JToolBar();statusBar.setLayout(new FlowLayout(FlowLayout.LEFT);statusLabel1 = new JLabel(按F1获取帮助 );statusLabel2 = new JLabel( 当前时间： + hour + : + min + : + second);statusLabel3 = new JLabel( 当前光标所在行数 + getlineNumber();statusBar.add(statusLabel1);statusBar.addSeparator();statusBar.add(statusLabel2);statusBar.addSeparator();statusBar.add(statusLabel3);container.add(statusBar, BorderLayout.SOUTH);statusBar.setVisible(true);/ -改变标题栏窗口左侧默认图标Toolkit tk = Toolkit.getDefaultToolkit();Image image = tk.createImage(Icons/notepad.gif);this.setIconImage(image);this.setJMenuBar(MenuBar); / 向窗口添加菜单条container.add(scroll, BorderLayout.CENTER); / 向容器添加文本编辑区this.pack();this.setSize(800, 800);this.setVisible(true);checkMenuItemEnabled();Text.requestFocus();/this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.addWindowListener(new WindowAdapter() public void windowClosing(WindowEvent evt) checkText(););Clock clock = new Clock();clock.start();public void checkText() Text.requestFocus();String currentValue = Text.getText();boolean isTextChange = (currentValue.equals(oldValue) ? false : true;if (isTextChange) int saveChoose = JOptionPane.showConfirmDialog(this, 您的文件尚未保存。是否保存?, 提示, JOptionPane.YES_NO_CANCEL_OPTION);if (saveChoose = JOptionPane.YES_OPTION) JFileChooser fileChooser = new JFileChooser();fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);fileChooser.setApproveButtonText(确定);fileChooser.setDialogTitle(另存为);int result = fileChooser.showSaveDialog(this);if (result = JFileChooser.CANCEL_OPTION) statusLabel1.setText(您没有选择任何文件);return;saveFileName = fileChooser.getSelectedFile();if (saveFileName = null | saveFileName.getName().equals()JOptionPane.showMessageDialog(this, 不合法的文件名, 不合法的文件名, JOptionPane.ERROR_MESSAGE);else saveFile();Text.setText();this.setTitle(新建文本);statusLabel1.setText(新建文本);else if (saveChoose = JOptionPane.NO_OPTION) System.exit(0);else if (saveChoose = JOptionPane.CANCEL_OPTION) Text.requestFocus();else if (!isTextChange) System.exit(0);public void checkMenuItemEnabled() String selectText = Text.getSelectedText();if (selectText = null) mEdit_Cut.setEnabled(false);popupMenu_Cut.setEnabled(false);cutButton.setEnabled(false);mEdit_Copy.setEnabled(false);popupMenu_Copy.setEnabled(false);copyButton.setEnabled(false);mEdit_Del.setEnabled(false);popupMenu_Delete.setEnabled(false);deleteButton.setEnabled(false); else m