多文档编辑器（java版）

import java.awt.*; import java.awt.datatransfer.Clipboard; import java.awt.datatransfer.DataFlavor; import java.awt.datatransfer.StringSelection; import java.awt.datatransfer.Transferable; import java.awt.event.*; import java.io.File; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.*; import javax.swing.event.DocumentEvent; import javax.swing.event.DocumentListener; import javax.swing.filechooser.FileFilter; import javax.swing.undo.UndoManager; import javax.swing.*; public class textframe extends JFrame implements ActionListener, WindowListener, MouseListener{ public void windowActivated(WindowEvent arg0) { // TODO Auto-generated method stub } public void windowClosed(WindowEvent arg0) { // TODO Auto-generated method stub } public void windowClosing(WindowEvent arg0) { // TODO Auto-generated method stub search.dispose(); replace.dispose(); } public void windowDeactivated(WindowEvent arg0) { // TODO Auto-generated method stub } public void windowDeiconified(WindowEvent arg0) { // TODO Auto-generated method stub } public void windowIconified(WindowEvent arg0) { // TODO Auto-generated method stub } public void windowOpened(WindowEvent arg0) { // TODO Auto-generated method stub } private JCheckBoxMenuItem autohh; public String filename=null; Toolkit toolkit=Toolkit.getDefaultToolkit(); Clipboard clipboard=toolkit.getSystemClipboard();//剪贴板对象 int chg=0; //标记是有否文本改变 Dialog search=new Dialog(this,"查找",true);//查找对话框 Dialog replace=new Dialog(this,"替换",true); TextField txtf=new TextField(25); TextField resourcet=new TextField(15); TextField replacet=new TextField(15); static int stringindex1,stringindex2=0;//指示字符串的位置 int locate=0; private Color samplecolor=Color.black; //默认字体颜色 FontFrame myfont; public int mdifnumber=0; Button button1 = new Button(); JDesktopPane desk = null; public static void main(String args[]){ textframe f=new textframe(); f.setVisible(true); } public textframe(){ super("mytext"); setSize(800,700); this.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { JInternalFrame[] array = desk.getAllFrames(); jmidframe tempf=null; for ( int a= 0; a < array.length; a++ ){ tempf=(jmidframe)array[a]; if(tempf.textchg==1) { chg=1; break; } } if(chg==1) for ( int a= 0; a < array.length; a++ ){ tempf=(jmidframe)array[a]; if(tempf.textchg==1) { if(JOptionPane.showConfirmDialog(null, "是否保存", tempf.getTitle()+"已改变是否保存", JOptionPane.YES_NO_OPTION)==JOptionPane.YES_OPTION){ if(tempf.filename!=null) writefile(tempf,tempf.filename); else{ JFileChooser chooser = new JFileChooser(); chooser.setAcceptAllFileFilterUsed(false); chooser.addChoosableFileFilter(new MyFileFilter()); int returnVal = chooser.showSaveDialog(null); if (returnVal == JFileChooser.APPROVE_OPTION) { File file = chooser.getSelectedFile(); filename=file.getAbsoluteFile().toString()+".txt"; writefile(tempf,filename); } } } array[a].dispose(); } else array[a].dispose(); } System.exit(0); } }); JMenuBar mb=new JMenuBar(); setJMenuBar(mb); JMenu mfile=new JMenu("文件"); JMenu medit=new JMenu("编辑"); JMenu mgs=new JMenu("格式"); mgs.addMouseListener(this); JMenu mhelp=new JMenu("帮助"); JMenuItem minew=new JMenuItem("新建"); minew.addActionListener(this); JMenuItem miopen=new JMenuItem("打开"); miopen.addActionListener(this); JMenuItem misave=new JMenuItem("保存"); misave.addActionListener(this); JMenuItem minewsave=new JMenuItem("另存为.."); minewsave.addActionListener(this); JMenuItem miclose=new JMenuItem("退出"); miclose.addActionListener(this); mfile.add(minew); mfile.add(miopen); mfile.add(misave); mfile.add(minewsave); mfile.add(miclose); JMenuItem miundo=new JMenuItem("撤销"); miundo.addActionListener(this); JMenuItem micut=new JMenuItem("剪切"); micut.addActionListener(this); JMenuItem micopy=new JMenuItem("复制"); micopy.addActionListener(this); JMenuItem mipaste=new JMenuItem("粘贴"); mipaste.addActionListener(this); JMenuItem midelete=new JMenuItem("删除"); midelete.addActionListener(this); JMenuItem misearch=new JMenuItem("查找"); misearch.addActionListener(this); JMenuItem mireplace=new JMenuItem("替换"); mireplace.addActionListener(this); JMenuItem miselectall=new JMenuItem("全选"); miselectall.addActionListener(this); medit.add(miundo); medit.addSeparator(); medit.add(micut); medit.add(micopy); medit.add(mipaste); medit.add(midelete); medit.addSeparator(); medit.add(misearch); medit.add(mireplace); medit.addSeparator(); medit.add(miselectall); autohh=new JCheckBoxMenuItem("自动换行"); autohh.addActionListener(this); mgs.add(autohh); JMenuItem micolor=new JMenuItem("颜色"); micolor.addActionListener(this); JMenuItem mifont=new JMenuItem("字体"); mifont.addActionListener(this); mgs.add(micolor); mgs.add(mifont); JMenuItem miabout=new JMenuItem("关于"); miabout.addActionListener(this); mhelp.add(miabout); mb.add(mfile); mb.add(medit); mb.add(mgs); mb.add(mhelp); /*JPanel textpanel=new JPanel(); texta=new JTextArea(); //texta.setLineWrap(true); //add(texta); texta.getDocument().addUndoableEditListener(undo); JScrollPane scrolletext=new JScrollPane(texta); scrolletext.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED); scrolletext.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED); textpanel.add(scrolletext); add(scrolletext,BorderLayout.CENTER);*/ desk = new JDesktopPane(); add(desk,BorderLayout.CENTER); search_dialog(); search.addWindowListener(this); replace_dialog(); replace.addWindowListener(this); //new java.awt.event.ActionListener() { //菜单1的事件监听 //public void actionPerformed(this) { //menuItem1_actionPerformed(e); //菜单事件函数 //} //}); JToolBar toolBar = new JToolBar();//实例化工具条 JButton newbt = new JButton("新建",new ImageIcon("images/new.png")); newbt.setRequestFocusEnabled(false); //设置不需要焦点 newbt.addActionListener(this); JButton openbt = new JButton("打开",new ImageIcon("images/open.png")); openbt.setRequestFocusEnabled(false); //设置不需要焦点 openbt.addActionListener(this); JButton savebt = new JButton("保存",new ImageIcon("images/save.gif")); savebt.setRequestFocusEnabled(false); //设置不需要焦点 savebt.addActionListener(this); JButton undobt = new JButton("撤销",new ImageIcon("images/undo.png")); undobt.setRequestFocusEnabled(false); //设置不需要焦点 undobt.addActionListener(this); JButton cutbt = new JButton("剪切",new ImageIcon("images/cut.png")); cutbt.setRequestFocusEnabled(false); //设置不需要焦点 cutbt.addActionListener(this); JButton copybt = new JButton("复制",new ImageIcon("images/copy.png")); copybt.setRequestFocusEnabled(false); //设置不需要焦点 copybt.addActionListener(this); JButton pastebt = new JButton("粘贴",new ImageIcon("images/paste.png")); pastebt.setRequestFocusEnabled(false); //设置不需要焦点 pastebt.addActionListener(this); JButton deletebt = new JButton("删除",new ImageIcon("images/delete.png")); deletebt.setRequestFocusEnabled(false); //设置不需要焦点 deletebt.addActionListener(this); toolBa