diff --git a/helpAbout.jpg b/helpAbout.jpg new file mode 100644 index 0000000000000000000000000000000000000000..8a30bea32ae22b25be13ec8dbcee8bcb33eea773 Binary files /dev/null and b/helpAbout.jpg differ diff --git a/src/java2020spring/AboutDialog.java b/src/java2020spring/AboutDialog.java new file mode 100644 index 0000000000000000000000000000000000000000..cbfbb526e17dfee97a43fcbbdc176ecf8fd98340 --- /dev/null +++ b/src/java2020spring/AboutDialog.java @@ -0,0 +1,45 @@ +package java2020spring; +import javax.swing.*; +import java.awt.*; +/* + * * Created by Haiyin + */ +public class AboutDialog extends JDialog { + private static final int ABOUT_WIDTH=600; //窗口默认高度 + private static final int ABOUT_HEIGHT=400; //窗口默认高度 + private Icon about = new ImageIcon("helpAbout.jpg"); + private JLabel desc = null; //文本标签 + private JPanel panel = null; //内容面板 + private JButton bu = null; //按钮 + public AboutDialog(Frame frame,String title,boolean modal) { + super(frame,title,modal); //将对话框放进当前框架，设置标题和模态 + init(); + Listener(); + } + private void init() { + desc = new JLabel(); //新建文本标签 + desc.setText("欢迎来到记事本，希望你使用愉快！"); + desc.setHorizontalAlignment(JLabel.CENTER); //设置文本标签位置 + panel = new JPanel(); //新建内容面板 + bu = new JButton(); + bu.setIcon(about); + panel.add(bu); + this.add(desc); //文本默认在边界管理器中央 + this.add(panel,BorderLayout.SOUTH); //将面板放在便捷管理器下方 + this.setSize(ABOUT_WIDTH,ABOUT_HEIGHT); //设置对话框大小 + } + private void Listener() { + bu.addActionListener(e -> {AboutDialog.this.dispose();//退出对话框 + }); + Toolkit kit = Toolkit.getDefaultToolkit(); //获得工具包 + Dimension screenSize = kit.getScreenSize(); //获得尺寸 + int screenWidth=screenSize.width; //获得当前屏幕宽度 + int screenHeight=screenSize.height; //获得当前屏幕高度 + int windowsWidth=this.getWidth(); //获得当前窗口宽度 + int windowsHeight=this.getHeight(); //获得当前窗口高度 + this.setLocation((screenWidth-windowsWidth)/2,(screenHeight-windowsHeight)/2); + //设置窗口位置 + this.setVisible(true); //设置窗口可见 + + } +} diff --git a/src/java2020spring/MyFrame.java b/src/java2020spring/MyFrame.java new file mode 100644 index 0000000000000000000000000000000000000000..5d19f62c00db8db04c55aaae12c09bf7a0c74080 --- /dev/null +++ b/src/java2020spring/MyFrame.java @@ -0,0 +1,493 @@ +package java2020spring; + +import javax.swing.*; +import javax.swing.event.DocumentEvent; +import javax.swing.event.DocumentListener; +import javax.swing.filechooser.FileNameExtensionFilter; +import javax.swing.undo.UndoManager; +import java.awt.*; +import java.awt.datatransfer.Clipboard; +import java.awt.event.*; +import java.io.*; +import java.text.SimpleDateFormat; +import java.util.Date; + /* + * *Created by HaiyinChen + */ +public class MyFrame extends JFrame{ +/** + *By HaiYinCheng + */ +private static final long serialVersionUID = 7609614339639993905L; +private static final int DEFAULT_FONTSIZE = 20; //默认字体大小 +private JTextArea textArea = null; //多行文本框 +private JScrollPane pane = null; //带滚动条的面板 +private JMenuBar menuBar = null; //菜单条 +private JMenu file = null; //文件菜单 +private JMenu edit = null; //编辑菜单 +private JMenu format = null; //格式菜单 +private JMenu help = null; //帮助菜单 +private JPopupMenu popupMenu = null; //右键弹出式菜单 +private JToolBar toolBar = null; //底部状态栏 +private String codeStyle = "UTF-8"; //编码格式 +private JFileChooser chooser = null; //文件选择对象 +private File fileChooser = null; //文件对象 +private UndoManager manager= null; //撤销操作对象 +private Clipboard clipboard=null; +TextArea text1,text2; +/*-------------------------文件菜单项--------------------------*/ +private JMenuItem fileNew = null; //新建 +private JMenuItem fileOpen = null; //打开 +private JMenuItem fileSave = null; //保存 +private JMenuItem fileElseSave = null; //另存为 +private JMenuItem fileExit = null; //退出 +/*-------------------------文件菜单项---------------------------*/ +/*-------------------------编辑菜单项--------------------------*/ +private JMenuItem editUndo = null; //撤销 +private JMenuItem editCut = null; //剪切 +private JMenuItem editCopy = null; //复制 +private JMenuItem editPaste = null; //粘贴 +private JMenuItem editClear = null; //删除，清空当前内容 +/*------------------------编辑菜单项-----------------------------*/ +/*------------------------格式菜单项-----------------------------*/ +private JMenuItem formatWrap = null; //自动换行 +private JMenuItem formatChooseFontColor = null; //字体颜色选择 +/*------------------------格式菜单项--------------------------------*/ +/*------------------------帮助菜单项----------------------------*/ +private JMenuItem helpLook = null; //查看帮助 +private JMenuItem helpAbout = null; //关于记事本 +/*-----------------------帮助菜单项---------------------------*/ +/*-------------------------右键弹出菜单项-------------------------*/ +private JMenuItem popCut = null; //剪切 +private JMenuItem popCopy = null; //复制 +private JMenuItem popPaste = null; //粘贴 +/*-------------------------右键弹出菜单项--------------------------*/ +/*-------------------------状态栏------------------------------*/ +private JLabel label = null; //当前字数 +private JLabel labelTime = null; //日期 +private JLabel labelCodeStyle = null; //编码 +private int screenSize; +/*-------------------------状态栏------------------------------*/ + + public MyFrame(String s,int x,int y,int w,int h) { //MyFrame的构造方法 + setLocation(x,y); + setTitle(s); + setSize(w,h); + init(); + Listener(); + setVisible(true); + setDefaultCloseOperation(DISPOSE_ON_CLOSE); + //初始化相关组件的方法 + + } + + + +//初始化相关组件 + private void init() { + + /*------------多行文本框-----------------*/ + textArea = new JTextArea(); //创建一个多行文本框 + textArea.setFont(new Font("Courier",Font.PLAIN,16)); // 文本框字体风格，int风格，字体号 + textArea.setCaretColor(Color.BLUE); // 光标颜色 + textArea.setSelectedTextColor(Color.WHITE); //选中字体的颜色 + textArea.setSelectionColor(Color.PINK); //选中背景颜色 + textArea.setLineWrap(true); //自动换行 + textArea.setTabSize(4); //设置选项卡要扩大到的字符数 + textArea.getDocument(); + /*-----------多行文本框------------------*/ + pane = new JScrollPane(textArea); + pane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); + pane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); + + //创建一个滚动条面板 + pane.setOpaque(false); //设置面板透明 + pane.getViewport().setOpaque(false); + Container cpan = this.getContentPane(); //获取当前框架的内容面板 + cpan.add(pane,BorderLayout.CENTER); // 将多行文本框添加到面板中央 + menuBar = new JMenuBar(); //创建菜单条 + manager = new UndoManager(); //创建一个撤销管理对象 + textArea.getDocument().addUndoableEditListener(manager); //给文本框添加可撤销监听 + clipboard=getToolkit().getSystemClipboard();//获取系统剪贴板 + /*--------------文件菜单---------------*/ + file = new JMenu("文件(F)"); //创建文件菜单 + file.setMnemonic('F'); //助记符 + fileNew = new JMenuItem("新建(N)"); //创建新建菜单项 + fileNew.setAccelerator(KeyStroke.getKeyStroke("ctrl N")); // 快捷键 + fileOpen = new JMenuItem("打开(O)"); //创建打开菜单项 + fileOpen.setAccelerator(KeyStroke.getKeyStroke("ctrl O")); + fileSave = new JMenuItem("保存(S)"); //创建保存菜单项 + fileSave.setAccelerator(KeyStroke.getKeyStroke("ctrl S")); + fileElseSave = new JMenuItem("另存为(A)"); //创建另存为菜单项 + fileElseSave.setAccelerator(KeyStroke.getKeyStroke("ctrl A")); + fileExit = new JMenuItem("退出(X)"); //创建退出菜单项 + //把菜单项加到文件菜单中 + file.add(fileNew); + file.add(fileOpen); + file.add(fileSave); + file.add(fileElseSave); + file.addSeparator(); //添加分隔符 + file.add(fileExit); + /*-------------文件菜单----------------------*/ + /*----------------编辑菜单-------------------*/ + edit = new JMenu("编辑菜单(E)"); //创建编辑菜单 + edit.setMnemonic('E'); //助记符 + editUndo = new JMenuItem("撤销(Z)"); //创建撤销菜单项 + editUndo.setAccelerator(KeyStroke.getKeyStroke("ctrl Z")); //快捷键 + editCut = new JMenuItem("剪切(X)"); //创建剪切菜单项 + editCut.setAccelerator(KeyStroke.getKeyStroke("ctrl X")); + editCopy = new JMenuItem("复制(C)"); //创建复制菜单项 + editCopy.setAccelerator(KeyStroke.getKeyStroke("ctrl C")); //快捷键 + editPaste = new JMenuItem("粘贴(V)"); //创建粘贴菜单项 + editPaste.setAccelerator(KeyStroke.getKeyStroke("ctrl V")); //快捷键 + editClear = new JMenuItem("清除"); //创建清除菜单项 + //把菜单项加到编辑菜单中 + edit.add(editUndo); + edit.addSeparator(); //添加分隔符 + edit.add(editCut); + edit.add(editCopy); + edit.add(editPaste); + edit.addSeparator(); //添加分隔符 + edit.add(editClear); + /*--------------编辑菜单-------------------------*/ + /*------------格式菜单--------------------------*/ + format = new JMenu("格式(M)"); //创建格式菜单 + format.setMnemonic('M'); + formatWrap = new JMenuItem("自动换行(W)"); //创建自动换行菜单项 + formatChooseFontColor = new JMenuItem("字体颜色(R)"); + //把菜单项加入到格式菜单中 + format.add(formatWrap); + format.add(formatChooseFontColor); + /*-----------格式菜单------------------------*/ + /*--------------帮助菜单---------------------*/ + help = new JMenu("帮助(H)"); //创建帮助菜单 + help.setMnemonic('H'); + helpLook = new JMenuItem("查看帮助(L)"); //创建查看帮助菜单项 + helpAbout = new JMenuItem("关于记事本(A)"); + //把菜单项加入到帮助菜单 + help.add(helpLook); + help.add(helpAbout); + /*----------------帮助菜单----------------------*/ + /*----------------右键菜单----------------------*/ + popupMenu = new JPopupMenu(); //创建右键菜单 + popCut = new JMenuItem("剪切"); + popCopy = new JMenuItem("复制"); + popPaste = new JMenuItem("粘贴"); + popupMenu.add(popCut); + popupMenu.add(popCopy); + popupMenu.add(popPaste); + /*----------------右键菜单----------------------*/ + /*----------------把菜单加到菜单条----------------*/ + menuBar.add(file); + menuBar.add(edit); + menuBar.add(format); + menuBar.add(help); + /*----------------把菜单加到菜单条----------------*/ + /*-------------状态栏-------------------------*/ + toolBar = new JToolBar(); + toolBar.setFloatable(false); //设置工具栏不能移动 + SimpleDateFormat time = new SimpleDateFormat("yyyy-MM-dd"); //时间格式 + label = new JLabel("当前字数",SwingConstants.CENTER); + labelTime = new JLabel("日期"+time.format(new Date())); + labelCodeStyle = new JLabel("编码"+codeStyle); + toolBar.add(label); + toolBar.addSeparator(new Dimension(150,5)); //添加分隔符 + toolBar.add(labelTime); + toolBar.addSeparator(new Dimension(150,5)); //添加分隔符 + toolBar.add(labelCodeStyle); + /*-------------状态栏-------------------------*/ + add(menuBar,BorderLayout.NORTH); //把菜单条放在布局的上面 + add(pane,BorderLayout.CENTER); //把面板放在布局的中间 + add(toolBar,BorderLayout.SOUTH); //把底部状态栏加到布局的底部 + Toolkit kit = Toolkit.getDefaultToolkit(); //获得工具包 + Dimension screenSize = kit.getScreenSize(); //获得尺寸 + int screenWidth=screenSize.width; //获得当前屏幕宽度 + int screenHeight=screenSize.height; //获得当前屏幕高度 + int windowsWidth=this.getWidth(); //获得当前窗口宽度 + int windowsHeight=this.getHeight(); //获得当前窗口高度 + this.setLocation((screenWidth-windowsWidth)/2,(screenHeight-windowsHeight)/2); + //设置窗口位置 + this.setVisible(true); //设置窗口可见 + } + + + +private void Listener() { + + this.addWindowListener(new WindowAdapter() { //为框架添加退出保存的监视器 + public void windowClosing(WindowEvent e) { + if(textArea.getText().equals("")) + System.exit(0); + else { + if(JOptionPane.showConfirmDialog(null,"需要保存吗？","提示！",JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE)==JOptionPane.YES_OPTION) { + //保存 + String path; + String content = textArea.getText(); + JFileChooser chooser = new JFileChooser(); + FileNameExtensionFilter filter = new FileNameExtensionFilter("文本文件(*.txt)","txt"); + chooser.setFileFilter(filter); + int res = chooser.showSaveDialog(null); //自定义保存对话框 + if(res == JFileChooser.APPROVE_OPTION) { //点击保存按钮 + path = chooser.getSelectedFile().getAbsolutePath()+".txt"; //获得保存路径 + try { + + OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(path),"gbk"); + + writer.write(content); + writer.close(); + } + catch(IOException e2) { + e2.printStackTrace(); + } + } //保存 + System.exit(0); + }else + System.exit(0); + } + } + + }); +/*------------------------------右键菜单相应的监视器-----------------------*/ + textArea.addMouseListener(new MouseAdapter() { //为文本框添加鼠标监视器 + public void mousePressed(MouseEvent e) { + //按下鼠标键触发的鼠标事件 + maybeShowPopup(e); + } + public void mouseReleased(MouseEvent e) { + //释放鼠标键触发的鼠标事件 + maybeShowPopup(e); + } + }); + textArea.getDocument().addDocumentListener(new DocumentListener() { + //监听文本改变 + public void insertUpdate(DocumentEvent e) { + isItemsAvalible(); //如果文本改变就设置其他按钮的可用性 + changeTextLengthStatus(); //实时显示文本字数 + } + public void removeUpdate(DocumentEvent e) { + isItemsAvalible(); //如果文本改变就设置其他按钮的可用性 + changeTextLengthStatus(); //实时显示文本字数 + } + public void changedUpdate(DocumentEvent e) { + changeTextLengthStatus(); //实时显示文本字数 + isItemsAvalible(); //如果文本改变就设置其他按钮的可用性 + } + }); + + + + popCut.addActionListener(e -> textArea.cut()); + popCopy.addActionListener(e -> textArea.copy()); + popPaste.addActionListener(e -> textArea.paste()); + helpAbout.addActionListener(e -> new AboutDialog(MyFrame.this,"About-NotePad",true)); +/*--------------------------------菜单项相应的监视器--------------------------------*/ + fileNew.addActionListener(new ActionListener() { + @Override + public void actionPerformed(ActionEvent e) { + if(!textArea.getText().equals("")) { //文本框有内容 + int have = JOptionPane.showConfirmDialog(null,"当前内容没有保存，需要保存吗？","提示！！！",JOptionPane.YES_NO_OPTION); + //确认对话框 + if(have==JOptionPane.YES_OPTION) { //先保存，再新建 + //保存 + String path; + String content = textArea.getText(); + JFileChooser chooser = new JFileChooser(); + FileNameExtensionFilter filter = new FileNameExtensionFilter("文本文件(*.txt)","txt"); + chooser.setFileFilter(filter); + int res = chooser.showSaveDialog(null); //自定义保存对话框 + if(res == JFileChooser.APPROVE_OPTION) { //点击保存按钮 + path = chooser.getSelectedFile().getAbsolutePath()+".txt"; //获得保存路径 + try { + + OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(path),"gbk"); + + writer.write(content); + writer.close(); + } + catch(IOException e2) { + e2.printStackTrace(); + } + } //保存 + textArea.setText(""); + this.setTitle("新建记事本"); + file = null; + } + else { //清空页面，再新建 + textArea.setText(""); + this.setTitle("新建记事本"); + file = null; + } + } + } //新建匿名监视器 + private void setTitle(String string) {} //新建记事本标题的方法 + }); + fileOpen.addActionListener(new ActionListener() { + @Override + public void actionPerformed(ActionEvent e) { + try { + chooser = new JFileChooser("D://"); //设置打开时默认目录 + int result = chooser.showOpenDialog(null); //自定义打开对话框 + if(result==JFileChooser.APPROVE_OPTION) { //点击打开按钮 + fileChooser = chooser.getSelectedFile(); + int length = (int)fileChooser.length(); + FileReader reader = new FileReader(fileChooser); + char[] ch = new char[length]; + reader.read(ch); // 将文件读进char数组 + reader.close(); + textArea.setText(new String(ch).trim()); //删除字符串的头尾空白符 + setTitle(fileChooser.getName()); //框架标题设置为文件名 + } + }catch(Exception e1) { + JOptionPane.showMessageDialog(null,e1); + } + } //打开文件匿名监视器 + }); + + fileSave.addActionListener(new ActionListener() { + @Override + public void actionPerformed(ActionEvent e) { + String path = null; + String content = textArea.getText(); + JFileChooser chooser = new JFileChooser(); + FileNameExtensionFilter filter = new FileNameExtensionFilter("文本文件(*.txt)","txt"); + chooser.setFileFilter(filter); + int res = chooser.showSaveDialog(null); //自定义保存对话框 + if(res == JFileChooser.APPROVE_OPTION) { //点击保存按钮 + try { + OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(path),"gbk"); + path = chooser.getSelectedFile().getAbsolutePath()+".txt"; //获得保存路径 + writer.write(content); + writer.close(); + } + catch(IOException e2) { + e2.printStackTrace(); + } + } + }//保存匿名监视器 + }); + fileElseSave.addActionListener(new ActionListener() { + @Override + public void actionPerformed(ActionEvent e) { + String path = null; + String content = textArea.getText(); + JFileChooser chooser = new JFileChooser(); + FileNameExtensionFilter filter = new FileNameExtensionFilter("文本文件(*.txt)","txt"); + chooser.setFileFilter(filter); + int res = chooser.showSaveDialog(null); //自定义另存为对话框 + if(res == JFileChooser.APPROVE_OPTION) { //点击保存按钮 + try { + OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(path),"gbk"); + path = chooser.getSelectedFile().getAbsolutePath()+".txt"; //获得保存路径 + writer.write(content); + writer.close(); + } + catch(IOException e2) { + e2.printStackTrace(); + } + } + } //另存为匿名监视器 + }); + fileExit.addActionListener(new ActionListener() { + @Override + public void actionPerformed(ActionEvent e) { + if(!textArea.getText().equals("")) { + int re = JOptionPane.showConfirmDialog(null,"当前内容没有保存，您需要保存吗？","提示",JOptionPane.YES_NO_OPTION); + if(re==JOptionPane.YES_OPTION) { + //保存 + String path; + String content = textArea.getText(); + JFileChooser chooser = new JFileChooser(); + FileNameExtensionFilter filter = new FileNameExtensionFilter("文本文件(*.txt)","txt"); + chooser.setFileFilter(filter); + int res = chooser.showSaveDialog(null); //自定义保存对话框 + if(res == JFileChooser.APPROVE_OPTION) { //点击保存按钮 + path = chooser.getSelectedFile().getAbsolutePath()+".txt"; //获得保存路径 + try { + OutputStreamWriter writer = new OutputStreamWriter(new FileOutputStream(path),"gbk"); + + writer.write(content); + writer.close(); + } + catch(IOException e2) { + e2.printStackTrace(); + } + } //保存 + System.exit(0); + } + } + else { + System.exit(0); + } + }//退出匿名监视器 + }); + editCut.addActionListener(e -> textArea.cut()); //实现剪切功能 + editCopy.addActionListener(e -> textArea.copy()); //实现复制功能 + editPaste.addActionListener(e -> textArea.paste()); //实现粘贴功能 + editUndo.addActionListener(new ActionListener() { //撤销匿名监视器 + + @Override + public void actionPerformed(ActionEvent e) { + if(manager.canUndo()) { //撤销 + manager.undo(); + } + } //撤销匿名监视器 + }); + editClear.addActionListener(new ActionListener() { + + @Override + public void actionPerformed(ActionEvent e) { + textArea.setText(""); + }//清除匿名监视器 + }); + formatWrap.addActionListener(new ActionListener() { + + @Override + public void actionPerformed(ActionEvent e) { + textArea.setLineWrap(true); //激活自动换行功能 + textArea.setWrapStyleWord(true); //激活断行不断字功能 + } //自动换行匿名监视器 + }); + formatChooseFontColor.addActionListener(new ActionListener() { + + @Override + public void actionPerformed(ActionEvent e) { + Color color=JColorChooser.showDialog(null, "请选择你喜欢的颜色", Color.WHITE); + textArea.setForeground(color); + } //字体颜色选择 + }); + +/*--------------------------------菜单项相应的监视器--------------------------------*/ + + } +private void maybeShowPopup(MouseEvent e) { //监听鼠标 + if(e.isPopupTrigger()) { //判断是否触发了弹出菜单这一动作 + popupMenu.show(e.getComponent(),e.getX(),e.getY()); //获得鼠标事件的对象,获得鼠标的位置 + } + +} +private void isItemsAvalible() { //监视文本区并设置各功能项是否可用 + String content = textArea.getText(); + if(content.equals("")) { + fileSave.setEnabled(false); + editCut.setEnabled(false); + editCopy.setEnabled(false); + editClear.setEnabled(false); + } + else { + fileSave.setEnabled(true); + editCut.setEnabled(true); + editCopy.setEnabled(true); + editClear.setEnabled(true); + } +} +private void changeTextLengthStatus() { //文本监听 + String content = textArea.getText().trim(); + label.setText("当前字数:"+content.length()); + +} + +} + + + + diff --git a/src/java2020spring/launcher.java b/src/java2020spring/launcher.java new file mode 100644 index 0000000000000000000000000000000000000000..55c924da109402e2bcab62e14b6aab9976f90872 --- /dev/null +++ b/src/java2020spring/launcher.java @@ -0,0 +1,7 @@ +package java2020spring; + +public class launcher { + public static void main(String[] args) { + MyFrame win = new MyFrame("记事本",40,50,700,450); //记事本 + } +}