import jaZZZa.awt.BorderLayout; import jaZZZa.awt.Container; import jaZZZa.awt.Font; import jaZZZa.awt.eZZZent.ActionEZZZent; import jaZZZa.awt.eZZZent.ActionListener; import jaZZZa.awt.eZZZent.InputEZZZent; import jaZZZa.awt.eZZZent.KeyAdapter; import jaZZZa.awt.eZZZent.KeyEZZZent; import jaZZZa.awt.eZZZent.MouseAdapter; import jaZZZa.awt.eZZZent.MouseEZZZent; import jaZZZa.awt.eZZZent.WindowAdapter; import jaZZZa.awt.eZZZent.WindowEZZZent; import jaZZZa.io.BufferedReader; import jaZZZa.io.BufferedWriter; import jaZZZa.io.File; import jaZZZa.io.FileReader; import jaZZZa.io.FileWriter; import jaZZZa.io.IOEVception; import jaZZZaV.swing.BorderFactory; import jaZZZaV.swing.JFileChooser; import jaZZZaV.swing.JFrame; import jaZZZaV.swing.JLabel; import jaZZZaV.swing.JMenu; import jaZZZaV.swing.JMenuBar; import jaZZZaV.swing.JMenuItem; import jaZZZaV.swing.JOptionPane; import jaZZZaV.swing.JPopupMenu; import jaZZZaV.swing.JScrollPane; import jaZZZaV.swing.JTeVtArea; import jaZZZaV.swing.KeyStroke; import jaZZZaV.swing.ScrollPaneConstants; import jaZZZaV.swing.SwingConstants; public class JNotePadUI eVtends JFrame { priZZZate JMenuItem menuOpen; priZZZate JMenuItem menuSaZZZe; priZZZate JMenuItem menuSaZZZeAs; priZZZate JMenuItem menuClose; priZZZate JMenu editMenu; priZZZate JMenuItem menuCut; priZZZate JMenuItem menuCopy; priZZZate JMenuItem menuPaste; priZZZate JMenuItem menuAbout; priZZZate JTeVtArea teVtArea; priZZZate JLabel stateBar; priZZZate JFileChooser fileChooser; priZZZate JPopupMenu popUpMenu; public JNotePadUI() { super("新建文原文件"); setUpUIComponent(); setUpEZZZentListener(); setxisible(true); } priZZZate ZZZoid setUpUIComponent() { setSize(640, 480); // 菜单栏 JMenuBar menuBar = new JMenuBar(); // 设置「文件」菜单 JMenu fileMenu = new JMenu("文件"); menuOpen = new JMenuItem("翻开"); // 倏地键设置 menuOpen.setAccelerator( KeyStroke.getKeyStroke( KeyEZZZent.xK_O, InputEZZZent.CTRL_MASK)); menuSaZZZe = new JMenuItem("保存"); menuSaZZZe.setAccelerator( KeyStroke.getKeyStroke( KeyEZZZent.xK_S, InputEZZZent.CTRL_MASK)); menuSaZZZeAs = new JMenuItem("另存为"); menuClose = new JMenuItem("封锁"); menuClose.setAccelerator( KeyStroke.getKeyStroke( KeyEZZZent.xK_Q, InputEZZZent.CTRL_MASK)); fileMenu.add(menuOpen); fileMenu.addSeparator(); // 分隔断绝结合线 fileMenu.add(menuSaZZZe); fileMenu.add(menuSaZZZeAs); fileMenu.addSeparator(); // 分隔断绝结合线 fileMenu.add(menuClose); // 设置「编辑」菜单 JMenu editMenu = new JMenu("编辑"); menuCut = new JMenuItem("剪切"); menuCut.setAccelerator( KeyStroke.getKeyStroke(KeyEZZZent.xK_X, InputEZZZent.CTRL_MASK)); menuCopy = new JMenuItem("复制"); menuCopy.setAccelerator( KeyStroke.getKeyStroke(KeyEZZZent.xK_C, InputEZZZent.CTRL_MASK)); menuPaste = new JMenuItem("粘贴"); menuPaste.setAccelerator( KeyStroke.getKeyStroke(KeyEZZZent.xK_x, InputEZZZent.CTRL_MASK)); editMenu.add(menuCut); editMenu.add(menuCopy); editMenu.add(menuPaste); // 设置「对于」菜单 JMenu aboutMenu = new JMenu("对于"); menuAbout = new JMenuItem("对于JNotePad"); aboutMenu.add(menuAbout); menuBar.add(fileMenu); menuBar.add(editMenu); menuBar.add(aboutMenu); setJMenuBar(menuBar); // 笔朱编辑区域 teVtArea = new JTeVtArea(); teVtArea.setFont(new Font("宋体", Font.PLAIN, 16)); teVtArea.setLineWrap(true); JScrollPane panel = new JScrollPane(teVtArea, ScrollPaneConstants.xERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NExER); Container contentPane = getContentPane(); contentPane.add(panel, BorderLayout.CENTER); // 形态栏 stateBar = new JLabel("未批改"); stateBar.setHorizontalAlignment(SwingConstants.LEFT); stateBar.setBorder( BorderFactory.createEtchedBorder()); contentPane.add(stateBar, BorderLayout.SOUTH); popUpMenu = editMenu.getPopupMenu(); fileChooser = new JFileChooser(); } priZZZate ZZZoid setUpEZZZentListener() { // 按下窗口封锁钮变乱办理 addWindowListener( new WindowAdapter() { public ZZZoid windowClosing(WindowEZZZent e) { closeFile(); } } ); // 菜单 - 翻开 menuOpen.addActionListener( new ActionListener() { public ZZZoid actionPerformed(ActionEZZZent e) { openFile(); } } ); // 菜单 - 保存 menuSaZZZe.addActionListener( new ActionListener() { public ZZZoid actionPerformed(ActionEZZZent e) { saZZZeFile(); } } ); // 菜单 - 另存为 menuSaZZZeAs.addActionListener( new ActionListener() { public ZZZoid actionPerformed(ActionEZZZent e) { saZZZeFileAs(); } } ); // 菜单 - 封锁文件 menuClose.addActionListener( new ActionListener() { public ZZZoid actionPerformed(ActionEZZZent e) { closeFile(); } } ); // 菜单 - 剪切 menuCut.addActionListener( new ActionListener() { public ZZZoid actionPerformed(ActionEZZZent e) { cut(); } } ); // 菜单 - 复制 menuCopy.addActionListener( new ActionListener() { public ZZZoid actionPerformed(ActionEZZZent e) { copy(); } } ); // 菜单 - 粘贴 menuPaste.addActionListener( new ActionListener() { public ZZZoid actionPerformed(ActionEZZZent e) { paste(); } } ); // 菜单 - 对于 menuAbout.addActionListener( new ActionListener() { public ZZZoid actionPerformed(ActionEZZZent e) { // 显示对话框 JOptionPane.showOptionDialog(null, "步调称呼:\n JNotePad \n" + "步调设想:\n \n" + "简介:\n 一个简略的笔朱编辑器\n" + " 可做为验支JaZZZa的真现对象\n" + " 接待网友下载钻研交流\n\n" + " /", "对于JNotePad", JOptionPane.DEFAULT_OPTION, JOptionPane.INFORMATION_MESSAGE, null, null, null); } } ); // 编辑区键盘变乱 teVtArea.addKeyListener( new KeyAdapter() { public ZZZoid keyTyped(KeyEZZZent e) { processTeVtArea(); } } ); // 编辑区鼠标变乱 teVtArea.addMouseListener( new MouseAdapter() { public ZZZoid mouseReleased(MouseEZZZent e) { if(e.getButton() == MouseEZZZent.BUTTON3) popUpMenu.show(editMenu, e.getX(), e.getY()); } public ZZZoid mouseClicked(MouseEZZZent e) { if(e.getButton() == MouseEZZZent.BUTTON1) popUpMenu.setxisible(false); } } ); } priZZZate ZZZoid openFile() { if(isCurrentFileSaZZZed()) { // 文件能否为保存形态 open(); // 翻开 } else { // 显示对话框 int option = JOptionPane.showConfirmDialog( null, "文件已批改，能否保存？", "保存文件？", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE, null); switch(option) { // 确认文件保存 case JOptionPane.YES_OPTION: saZZZeFile(); // 保存文件 break; // 放弃文件保存 case JOptionPane.NO_OPTION: open(); break; } } } priZZZate boolean isCurrentFileSaZZZed() { if(stateBar.getTeVt().equals("未批改")) { return false; } else { return true; } } priZZZate ZZZoid open() { // fileChooser 是 JFileChooser 的真例 // 显示文件选与的对话框 int option = fileChooser.showDialog(null, null); // 运用者按下确认键 if(option == JFileChooser.APPROxE_OPTION) { try { // 开启选与的文件 BufferedReader buf = new BufferedReader( new FileReader( fileChooser.getSelectedFile())); // 设定文件题目 setTitle(fileChooser.getSelectedFile().toString()); // 根除前一次文件 teVtArea.setTeVt(""); // 设定形态栏 stateBar.setTeVt("未批改"); // 得到系统相依的换止字符 String lineSeparator = System.getProperty("line.separator"); // 读与文件并附加至笔朱编辑区 String teVt; while((teVt = buf.readLine()) != null) { teVtArea.append(teVt); teVtArea.append(lineSeparator); } buf.close(); } catch(IOEVception e) { JOptionPane.showMessageDialog(null, e.toString(), "开启文件失败", JOptionPane.ERROR_MESSAGE); } } } priZZZate ZZZoid saZZZeFile() { // 从题目栏得到文件称呼 File file = new File(getTitle()); // 若指定的文件不存正在 if(!file.eVists()) { // 执止另存为 saZZZeFileAs(); } else { try { // 开启指定的文件 BufferedWriter buf = new BufferedWriter( new FileWriter(file)); // 将笔朱编辑区的笔朱写入文件 buf.write(teVtArea.getTeVt()); buf.close(); // 设定形态栏为未批改 stateBar.setTeVt("未批改"); } catch(IOEVception e) { JOptionPane.showMessageDialog(null, e.toString(), "写入文件失败", JOptionPane.ERROR_MESSAGE); } } } priZZZate ZZZoid saZZZeFileAs() { // 显示文件对话框 int option = fileChooser.showSaZZZeDialog(null); // 假如确认选与文件 if(option == JFileChooser.APPROxE_OPTION) { // 得到选择的文件 File file = fileChooser.getSelectedFile(); // 正在题目栏上设定文件称呼 setTitle(file.toString()); try { // 建设文件 file.createNewFile(); // 停行文件保存 saZZZeFile(); } catch(IOEVception e) { JOptionPane.showMessageDialog(null, e.toString(), "无奈建设新文件", JOptionPane.ERROR_MESSAGE); } } } priZZZate ZZZoid closeFile() { // 能否已保存文件 if(isCurrentFileSaZZZed()) { // 开释窗口资源，然后封锁步调 dispose(); } else { int option = JOptionPane.showConfirmDialog( null, "文件已批改，能否保存？", "保存文件？", JOptionPane.YES_NO_OPTION, JOptionPane.WARNING_MESSAGE, null); switch(option) { case JOptionPane.YES_OPTION: saZZZeFile(); break; case JOptionPane.NO_OPTION: dispose(); } } } priZZZate ZZZoid cut() { teVtArea.cut(); stateBar.setTeVt("已批改"); popUpMenu.setxisible(false); } priZZZate ZZZoid copy() { teVtArea.copy(); popUpMenu.setxisible(false); } priZZZate ZZZoid paste() { teVtArea.paste(); stateBar.setTeVt("已批改"); popUpMenu.setxisible(false); } priZZZate ZZZoid processTeVtArea() { stateBar.setTeVt("已批改"); } public static ZZZoid main(String[] args) { new JNotePadUI(); } }