仿Windows记事本Swing程序代码,C代码库,德仔网

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【C】仿Windows记事本Swing程序
作者:Timco / 发布于2013/3/18/ 969

	import java.awt.*;
	import java.awt.datatransfer.*;
	import java.awt.event.*;

	import javax.print.*;
	import javax.print.attribute.DocAttributeSet;
	import javax.print.attribute.HashDocAttributeSet;
	import javax.print.attribute.HashPrintRequestAttributeSet;
	import javax.print.attribute.PrintRequestAttributeSet;
	import javax.print.attribute.standard.MediaSizeName;
	import javax.swing.*;
	import javax.swing.border.BevelBorder;
	import javax.swing.event.UndoableEditEvent;
	import javax.swing.event.UndoableEditListener;
	import javax.swing.filechooser.*;
	import javax.swing.filechooser.FileFilter;
	import javax.swing.plaf.FileChooserUI;
	import javax.swing.undo.UndoableEdit;

	import java.io.*;

	public class Notepad extends JFrame {

	/**
	 * @param args
	 */
	public JTextArea jta=null; //中间的文本区域
	private File selectedFile=null;
	private JFileChooser chooser=null; //文件选择器
	private UndoableEdit edit; //设置还原功能
	private boolean canUndo=false;
	private JMenuItem jmiUndoItem; //撤销的菜单
	private Clipboard clip=null; //粘贴板
	private JDialog jdSearchDialog;
	
	public Notepad()
	{
	 super("Notepad Beta");
	 super.setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
	 chooser=new JFileChooser();
	 chooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
	 clip=Toolkit.getDefaultToolkit().getSystemClipboard();
	 jta=new JTextArea();
	 jta.setWrapStyleWord(true);
	 jta.setLineWrap(true);
	
	//*****************************右键弹出功能
	 final JPopupMenu jpMenu=new JPopupMenu();
	 JMenuItem jpItemUndo=new JMenuItem("撤销(U) ");
	 JMenuItem jpItemCut=new JMenuItem("剪切(T) ");
	 JMenuItem jpItemCopy=new JMenuItem("复制(C) ");
	 JMenuItem jpItemPaste=new JMenuItem("粘贴(P) ");
	 jpMenu.add(jpItemUndo);
	 jpMenu.add(new JPopupMenu.Separator());
	 jpMenu.add(jpItemCut);
	 jpMenu.add(jpItemCopy);
	 jpMenu.add(jpItemPaste);
	 jpMenu.setBorder(new BevelBorder(BevelBorder.RAISED));
	
	 jta.addMouseListener(new MouseAdapter() {
	 public void mouseClicked(MouseEvent e)
	 {
	 if(e.isMetaDown())
	 {
	 if(!jpMenu.isVisible())
	 {
	 jpMenu.show(e.getComponent(),e.getX(),e.getY());
	 }
	 }
	 else {
	 jpMenu.setVisible(false);
	 }
	 }
	 });
	//*****************************实现撤销功能
	
	 jta.getDocument().addUndoableEditListener(new UndoableEditListener() {
	
	 @Override
	 public void undoableEditHappened(UndoableEditEvent e) {
	 // TODO Auto-generated method stub
	 edit=e.getEdit();
	 if(edit!=null)
	 {
	 canUndo=edit.canUndo();
	 }
	 else
	 {
	 canUndo=false;
	 }
	 }
	 });
	
	//**********************************设置相关菜单和事件监听
	 Container content=getContentPane();
	 JMenuBar jmb=new JMenuBar();
	 JMenu jmFile=new JMenu("文件(F)");
	 jmFile.setMnemonic('f');
	 JMenu jmEdit=new JMenu("编辑(E)");
	 jmEdit.setMnemonic('e');
	 JMenu jmStyle=new JMenu("格式(O)");
	 jmStyle.setMnemonic('e');
	 JMenu jmView=new JMenu("查看(V)");
	 jmView.setMnemonic('v');
	 JMenu jmHelp=new JMenu("帮助(H)");
	 jmHelp.setMnemonic('h');
	 jmb.add(jmFile);
	 jmb.add(jmEdit);
	 jmb.add(jmStyle);
	 jmb.add(jmView);
	 jmb.add(jmHelp);
	 setJMenuBar(jmb);
	
	 JMenuItem jmiNewItem=new JMenuItem("新建(N) Ctrl+N");
	 jmiNewItem.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 if(!jta.getText().equals(""))
	 {
	 int confirm=JOptionPane.showConfirmDialog(Notepad.this, "是否保存(S) Ctrl+S文件？");
	 if(confirm==JOptionPane.OK_OPTION)
	 {
	 if(selectedFile!=null)
	 {
	 try {
	 FileWriter fw=new FileWriter(selectedFile);
	 fw.write(jta.getText());
	 fw.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件写入异常");
	 }
	 jta.setText("");
	 }
	 else
	 {
	 jta.setText("");
	 JFileChooser jChooser=new JFileChooser();
	 int selection=jChooser.showSaveDialog(Notepad.this);
	 if(selection==JFileChooser.APPROVE_OPTION)
	 {
	 selectedFile=jChooser.getSelectedFile();
	 try {
	 FileWriter fw=new FileWriter(selectedFile);
	 fw.write(jta.getText());
	 fw.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件写入异常");
	 }
	 }
	 }
	 }
	 else if(confirm==JOptionPane.NO_OPTION)
	 {
	 jta.setText("");
	 }
	 else {}
	 }
	 else{}
	 }
	 });
	 JMenuItem jmiOpenItem=new JMenuItem("打开(O) Ctrl+O");
	 jmiOpenItem.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 if(!jta.getText().equals(""))
	 {
	 int confirm=JOptionPane.showConfirmDialog(Notepad.this, "是否保存(S) Ctrl+S文件？");
	 if(confirm==JOptionPane.OK_OPTION)
	 {
	 if(selectedFile!=null)
	 {
	 try {
	 FileWriter fw=new FileWriter(selectedFile);
	 fw.write(jta.getText());
	 fw.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件写入异常");
	 }
	 }
	 else
	 {
	 JFileChooser jChooser=new JFileChooser();
	 int selection=jChooser.showSaveDialog(Notepad.this);
	 if(selection==JFileChooser.APPROVE_OPTION)
	 {
	 selectedFile=jChooser.getSelectedFile();
	 try {
	 FileWriter fw=new FileWriter(selectedFile);
	 fw.write(jta.getText());
	 fw.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件写入异常");
	 }
	 }
	 }
	 }
	 else if(confirm==JOptionPane.NO_OPTION)
	 {
	 jta.setText("");
	 JFileChooser jChooser=new JFileChooser();
	 int selection=jChooser.showOpenDialog(Notepad.this);
	 {
	 if(selection==JFileChooser.APPROVE_OPTION)
	 {
	 selectedFile=jChooser.getSelectedFile();
	 try {
	 BufferedReader bf=new BufferedReader(new FileReader(selectedFile));
	 String tempString="";
	 int i;
	 while((i=bf.read())!=-1)
	 {
	 tempString+=String.valueOf((char)i);
	 }
	 jta.setText(tempString);
	 bf.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件保存(S) Ctrl+S错误");
	 }
	
	 }
	 else {}
	 }
	 }
	 else {}
	 }
	 else
	 {
	 JFileChooser jChooser=new JFileChooser();
	 int selection=jChooser.showOpenDialog(Notepad.this);
	 if(selection==JFileChooser.APPROVE_OPTION)
	 {
	 selectedFile=jChooser.getSelectedFile();
	 try {
	 BufferedReader bf=new BufferedReader(new FileReader(selectedFile));
	 String tempString="";
	 int i;
	 while((i=bf.read())!=-1)
	 {
	 tempString+=String.valueOf((char)i);
	 }
	 jta.setText(tempString);
	 bf.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件打开(O) Ctrl+O错误");
	 }
	 }
	 else {}
	
	 }
	 }
	 });
	 JMenuItem jmiSaveItem=new JMenuItem("保存(S) Ctrl+S");
	 jmiSaveItem.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 if(jta.getText().equals("")) {}
	 else
	 {
	 if(selectedFile==null)
	 {
	 JFileChooser jChooser=new JFileChooser();
	 int selection=jChooser.showOpenDialog(Notepad.this);
	 if(selection==JFileChooser.APPROVE_OPTION)
	 {
	 selectedFile=jChooser.getSelectedFile();
	 try {
	 BufferedReader bf=new BufferedReader(new FileReader(selectedFile));
	 String tempString="";
	 int i;
	 while((i=bf.read())!=-1)
	 {
	 tempString+=String.valueOf((char)i);
	 }
	 jta.setText(tempString);
	 bf.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件打开(O) Ctrl+O错误");
	 }
	 }
	 else {}
	 }
	 else
	 {
	 try {
	 FileWriter fw=new FileWriter(selectedFile);
	 fw.write(jta.getText());
	 fw.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件写入异常");
	 }
	 }
	 }
	 }});
	 JMenuItem jmiSaveTo = new JMenuItem("另存为(A)...");
	 jmiSaveTo.addActionListener(new ActionListener() {
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 JFileChooser jChooser=new JFileChooser();
	 int selection=jChooser.showOpenDialog(Notepad.this);
	 if(selection==JFileChooser.APPROVE_OPTION)
	 {
	 selectedFile=jChooser.getSelectedFile();
	 try {
	 BufferedWriter bf=new BufferedWriter(new FileWriter(selectedFile));
	 bf.write(jta.getText());
	 bf.close();
	 } catch (Exception e) {
	 // TODO: handle exception
	 JOptionPane.showConfirmDialog(Notepad.this, "文件打开(O) Ctrl+O错误");
	 }
	 }
	 else {}
	 }
	 });
	 JMenuItem jmiExitItem=new JMenuItem("退出(X)");
	 jmiExitItem.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 if(jta.getText().equals(""))
	 System.exit(0);
	 else
	 {
	 int t=JOptionPane.showConfirmDialog(Notepad.this, "确定退出(X)？");
	 if(t==JOptionPane.OK_OPTION)
	 {
	 System.exit(0);
	 }
	 }
	 }
	 });
	 JMenuItem jmiPrintItem = new JMenuItem("打印(P) Ctrl+P");
	 jmiPrintItem.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;
	 PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();
	 aset.add(MediaSizeName.ISO_A4);
	 PrintService[] pservices =
	 PrintServiceLookup.lookupPrintServices(flavor, aset);
	 PrintService defaultService=PrintServiceLookup.lookupDefaultPrintService();
	 if (pservices.length > 0) {
	 PrintService service = ServiceUI.printDialog(null, 200, 200, pservices,
	 defaultService, flavor, aset);
	 DocPrintJob pj = service.createPrintJob();
	 try {
	 String fis=jta.getText();
	 DocAttributeSet das = new HashDocAttributeSet();
	 Doc doc = new SimpleDoc(fis, flavor, das);
	 pj.print(doc, aset);
	 }
	 catch (PrintException e) {
	 e.printStackTrace();
	 }
	 }
	 }
	 });
	 jmFile.add(jmiNewItem);
	 jmFile.add(jmiOpenItem);
	 jmFile.add(jmiSaveItem);
	 jmFile.add(jmiSaveTo);
	 jmFile.add(new JSeparator());
	 jmFile.add(jmiPrintItem);
	 jmFile.add(new JSeparator());
	 jmFile.add(jmiExitItem);
	
	
	//******************************实现编辑菜单的相关item
	//***************************由于item太多，就放在一个类中实现监听（除了jmiUndoItem）
	 jmiUndoItem = new JMenuItem("撤销(U) Ctrl+Z");
	 jmiUndoItem.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 if(canUndo)
	 {
	 jmiUndoItem.setEnabled(true);
	 edit.undo();
	 }
	 else {
	 jmiUndoItem.setEnabled(false);
	 }
	 }
	 });
	 JMenuItem jmiCutItem = new JMenuItem("剪切(T) Ctrl+T");
	 jmiCutItem.addActionListener(new EditListener());
	 JMenuItem jmiCopyItem = new JMenuItem("复制(C) Ctrl+C");
	 jmiCopyItem.addActionListener(new EditListener());
	 JMenuItem jmiPasteItem = new JMenuItem("粘贴(P) Ctrl+V");
	 jmiPasteItem.addActionListener(new EditListener());
	 JMenuItem jmiDeleteItem = new JMenuItem("删除(L) Del");
	 jmiDeleteItem.addActionListener(new EditListener());
	 JMenuItem jmiSearchItem = new JMenuItem("查找(F) Ctrl+F");
	 jmiSearchItem.addActionListener(new EditListener());
	 JMenuItem jmiSearchNextItem = new JMenuItem("查找下一个(N) F3");
	 jmiSearchNextItem.addActionListener(new EditListener());
	 JMenuItem jmiReplaceItem = new JMenuItem("替换");
	 jmiReplaceItem.addActionListener(new EditListener());
	 JMenuItem jmiGoToItem = new JMenuItem("转到");
	 jmiGoToItem.addActionListener(new EditListener());
	 JMenuItem jmiSelectAllItem = new JMenuItem("全选");
	 jmiSelectAllItem.addActionListener(new EditListener());
	 JMenuItem jmiDateItem = new JMenuItem("日期");
	 jmiDateItem.addActionListener(new EditListener());
	
	 jmEdit.add(jmiUndoItem);
	 jmEdit.add(new JSeparator());
	 jmEdit.add(jmiCutItem);
	 jmEdit.add(jmiCopyItem);
	 jmEdit.add(jmiPasteItem);
	 jmEdit.add(jmiDeleteItem);
	 jmEdit.add(new JSeparator());
	 jmEdit.add(jmiSearchItem);
	 jmEdit.add(jmiSearchNextItem);
	 jmEdit.add(jmiReplaceItem);
	 jmEdit.add(jmiGoToItem);
	 jmEdit.add(new JSeparator());
	 jmEdit.add(jmiSelectAllItem);
	 jmEdit.add(jmiDateItem);
	
	
	//************************* 风格菜单的实现
	 JCheckBox jcbAutoNextLine=new JCheckBox("自动换行");
	 JMenuItem jmiFontitemItem = new JMenuItem("字体");
	 jmStyle.add(jcbAutoNextLine);
	 jmStyle.add(jmiFontitemItem);
	
	 JMenuItem jmiViewStatusItem = new JMenuItem("查看状态栏");
	 jmiViewStatusItem.setEnabled(false);
	 jmView.add(jmiViewStatusItem);
	
	 JMenuItem jmiAboutItem=new JMenuItem("关于");
	 jmiAboutItem.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent e) {
	 // TODO Auto-generated method stub
	 new HelpDialog(Notepad.this);
	 }
	 });
	
	//**********************帮助菜单
	 jmHelp.add(jmiAboutItem);
	 setLayout(new BorderLayout());
	
	 JScrollPane jsp=new JScrollPane(jta);
	 jsp.requestFocus(true);
	 content.add(jsp,BorderLayout.CENTER);
	}
	public static void main(String[] args) throws Exception{
	 // TODO Auto-generated method stub
	 try {
	 UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
	 } catch (Exception e) {
	 System.out.print("Look And Feel Exception");
	 System.exit(0);
	 // TODO: handle exception
	 }
	 JFrame frame=new Notepad();
	 frame.addWindowListener(new WindowAdapter() {
	 public void windowClosing(WindowEvent e)
	 {
	 int r=JOptionPane.showConfirmDialog(null, "确认退出吗？");
	 if(r==JOptionPane.OK_OPTION)
	 System.exit(0);
	 }
	 });
	 frame.setSize(1000,500);
	 frame.setLocationRelativeTo(null);
	 frame.setVisible(true);
	}
	
	//***************************** 和剪贴板相关函数的实现
	public String getClipbordContent(Clipboard clip) throws Exception
	{
	 Transferable trans = clip.getContents(null);
	 if(trans!=null)
	 {
	 if(trans.isDataFlavorSupported(DataFlavor.stringFlavor))
	 return (String)trans.getTransferData(DataFlavor.stringFlavor);
	 else return "";
	 }
	 else
	 return "";
	}
	
	public void setClipbordContent(Clipboard clip,String str) throws Exception
	{

	 Transferable trans=new StringSelection(str);
	 clip.setContents(trans, null);
	}

	//********************************监听编辑菜单下item的事件
	class EditListener implements ActionListener
	{
	 private String tempString="";
	 String textString=jta.getText();
	 String searchString="";
	 int stringLength=0;
	 int startPos;
	 JTextField jtField=null;
	 @Override
	 public void actionPerformed(ActionEvent e) {
	 // TODO Auto-generated method stub
	 if(e.getActionCommand().equals("剪切(T) Ctrl+T"))
	 {
	 tempString=jta.getSelectedText();
	 try {
	 setClipbordContent(clip, tempString);
	 } catch (Exception e1) {
	 // TODO Auto-generated catch block
	 e1.printStackTrace();
	 }
	 jta.replaceSelection("");
	 }
	 else if (e.getActionCommand().equals("复制(C) Ctrl+C")) {
	 tempString=jta.getSelectedText();
	 try {
	 setClipbordContent(clip, tempString);
	 } catch (Exception e2) {
	 // TODO: handle exception
	 e2.printStackTrace();
	 }
	
	 }
	 else if (e.getActionCommand().equals("粘贴(P) Ctrl+V")) {
	 try {
	 tempString=getClipbordContent(clip);
	 } catch (Exception e1) {
	 // TODO Auto-generated catch block
	 e1.printStackTrace();
	 }
	 int pos=jta.getCaretPosition();
	 jta.insert(tempString, pos);
	 }
	 else if (e.getActionCommand().equals("删除(L) Del")) {
	 jta.replaceSelection("");
	 }
	 else if (e.getActionCommand().equals("查找(F) Ctrl+F")) {
	 jdSearchDialog=new JDialog(Notepad.this,"查找");
	 Container content=jdSearchDialog.getContentPane();
	 JLabel jl=new JLabel("查找内容：");
	 jtField=new JTextField(20);
	 jtField.requestFocus();
	 JButton jbt1=new JButton("查找");
	 jbt1.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 searchString=jtField.getText();
	 stringLength=searchString.length();
	 if(stringLength>0)
	 {
	 startPos=jta.getText().indexOf(searchString);
	 if(startPos>=0)
	 {
	 jta.select(startPos, startPos+stringLength);
	 }
	 else {
	 JOptionPane.showConfirmDialog(Notepad.this, "找不到"+"\""+searchString+"\"");
	 }
	 }
	 else {
	 JOptionPane.showConfirmDialog(Notepad.this, "请输入查找内容");
	 }
	 }
	 });
	
	 JPanel jp1=new JPanel(new BorderLayout(3,1));
	 jp1.add(jl,BorderLayout.WEST);
	 jp1.add(jtField,BorderLayout.CENTER);
	 jp1.add(jbt1,BorderLayout.EAST);
	
	 JPanel jp3 = new JPanel(new GridLayout(1,2));
	 jp3.setBorder(BorderFactory.createTitledBorder("方向"));
	 JRadioButton jrb1=new JRadioButton("向上(U)");
	 JRadioButton jrb2=new JRadioButton("向下(D)");
	 ButtonGroup bgButtonGroup=new ButtonGroup();
	 bgButtonGroup.add(jrb1);
	 bgButtonGroup.add(jrb2);
	 jp3.add(jrb1);
	 jp3.add(jrb2);

	 JCheckBox jcb=new JCheckBox("区分大小写(c)");
	 JPanel jp2 = new JPanel(new BorderLayout());
	 JButton jbt2=new JButton("取消");
	 jbt2.addActionListener(new ActionListener() {
	
	 @Override
	 public void actionPerformed(ActionEvent arg0) {
	 // TODO Auto-generated method stub
	 jdSearchDialog.dispose();
	 }
	 });
	 jp2.add(jcb,BorderLayout.WEST);
	 jp2.add(jp3,BorderLayout.CENTER);
	 jp2.add(jbt2,BorderLayout.EAST);
	
	 content.setLayout(new BorderLayout());
	 content.add(jp1,BorderLayout.NORTH);
	 content.add(jp2,BorderLayout.CENTER);
	 jdSearchDialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
	 jdSearchDialog.setLocationRelativeTo(null);
	 jdSearchDialog.setSize(400,100);
	 jdSearchDialog.setResizable(false);
	 jdSearchDialog.setVisible(true);
	 }
	 else if(e.getActionCommand().equals("查找下一个(N) F3"))
	 {
	 JOptionPane.showConfirmDialog(Notepad.this, "查找下一个(N) F3 Clicked");
	 }
	 else if (e.getActionCommand().equals("替换")) {
	 JOptionPane.showConfirmDialog(Notepad.this, "替换 Clicked");
	 }
	 else if(e.getActionCommand().equals("转到"))
	 {
	 JOptionPane.showConfirmDialog(Notepad.this, "转到");
	 }
	 else if (e.getActionCommand().equals("全选")) {
	 jta.selectAll();
	 }
	 else if (e.getActionCommand().equals("日期")) {
	 int pos=jta.getCaretPosition();
	 java.util.GregorianCalendar calendar=new java.util.GregorianCalendar();
	 java.util.Date date=calendar.getTime();
	 tempString=date.toString();
	 jta.insert(tempString, pos);
	 }
	 }
	
	}
	}
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