?? cutandpaste.java
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/*
* Created on 2005-6-14
*
* TODO To change the template for this generated file go to
* Window - Preferences - Java - Code Style - Code Templates
*/
package com.eagle.test;
/**
* @author Administrator
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import com.eagle.swing.Console;
import java.awt.datatransfer.*;
import javax.swing.undo.UndoManager;
public class CutAndPaste extends JFrame {
private static final int NotModify = 0;
private static final int HavModify = 1;
private static int flag = NotModify;
private JMenuBar mb = new JMenuBar();
private JMenu file = new JMenu("File");
private JMenu edit = new JMenu("Edit");
private JMenu help = new JMenu("Help");
private JMenuItem
newF = new JMenuItem("New"),
open = new JMenuItem("Open"),
save = new JMenuItem("Save"),
close = new JMenuItem("Close"),
redo = new JMenuItem("Redo"),
undo = new JMenuItem("Undo"),
find = new JMenuItem("Find"),
cut = new JMenuItem("Cut"),
copy = new JMenuItem("Copy"),
paste = new JMenuItem("Paste"),
about = new JMenuItem("About");
private UndoManager undomanager= new UndoManager();
private JTextArea text = new JTextArea(20,30);
private TextF textf = new TextF();
private UndoF undof = new UndoF();
private Clipboard clipbd = getToolkit().getSystemClipboard();
public CutAndPaste(){
this.setTitle("無標題－記事本");
newF.addActionListener(new NewF());
open.addActionListener(new OpenDialog());
save.addActionListener(new SaveDialog());
close.addActionListener(new CloseF());
redo.addActionListener(new RedoL());
undo.addActionListener(new UndoL());
find.addActionListener(new FindL());
cut.addActionListener(new CutL());
copy.addActionListener(new CopyL());
paste.addActionListener(new PasteL());
about.addActionListener(new AboutH());
text.getDocument().addDocumentListener(textf);
text.getDocument().addUndoableEditListener(undof);
file.add(newF);
file.add(open);
file.add(save);
file.add(close);
edit.add(undo);
edit.add(redo);
edit.add(find);
edit.add(cut);
edit.add(copy);
edit.add(paste);
help.add(about);
mb.add(file);
mb.add(edit);
mb.add(help);
setJMenuBar(mb);
getContentPane().add(new JScrollPane(text));
}
class NewF implements ActionListener{
public void actionPerformed(ActionEvent e){
undomanager.discardAllEdits();
if(flag == NotModify) {
text.setText("");
flag = NotModify;
}
if(flag == HavModify ){
int val = isSaveDialog();
if(val == 0) {
SaveF();
text.setText("");
flag = NotModify;
}
if(val == 1) {
text.setText("");
flag = NotModify;
}
if(val == 2) ;
}
}
}
class UndoF implements UndoableEditListener{
public void undoableEditHappened( UndoableEditEvent e )
{
undomanager.addEdit( e.getEdit() );
}
}
class TextF implements DocumentListener{
public void changedUpdate(DocumentEvent e){
flag = HavModify;
}
public void insertUpdate(DocumentEvent e){
flag = HavModify;
}
public void removeUpdate(DocumentEvent e){
flag = HavModify;
}
}
class OpenDialog implements ActionListener{
public void actionPerformed(ActionEvent e){
if(flag == NotModify) OpenF();
else if(flag == HavModify) {
int value = isSaveDialog();
if(value == 0) {
SaveF();
OpenF();
}
else if(value == 1) OpenF();
}
}
}
class SaveDialog implements ActionListener{
public void actionPerformed(ActionEvent e){
if(flag == NotModify) ;
else if(flag == HavModify) {
SaveF();
}
}
}
public void OpenF(){
File filer = new File
("E:\\eclipse\\myworkspace\\MySwing\\com\\eagle\\test");
JFileChooser chooser = new JFileChooser(filer);
int returnVal = chooser.showOpenDialog(new CutAndPaste());
if(returnVal == JFileChooser.APPROVE_OPTION){
text.setText("");
try{
FileReader fr = new FileReader
(new File(chooser.getSelectedFile().getAbsolutePath()));
super.setTitle(chooser.getSelectedFile().getName() + "－記事本");
BufferedReader br = new BufferedReader(fr);
String str = br.readLine();
while(str != null){
text.append(str + "\n");
str = br.readLine();
}
br.close();
}catch(IOException ee){}
}
flag = NotModify; //not to check
}
public void SaveF(){
File filer = new File
("E:\\eclipse\\myworkspace\\MySwing\\com\\eagle\\test");
JFileChooser chooser = new JFileChooser(filer);
int returnVal = chooser.showSaveDialog(new CutAndPaste());
if(returnVal == JFileChooser.APPROVE_OPTION){
String content = text.getText();
try{
FileWriter fw = new FileWriter
(new File(chooser.getSelectedFile().getAbsolutePath()));
BufferedWriter bw = new BufferedWriter(fw);
PrintWriter pw = new PrintWriter(bw);
pw.write(content);
pw.close();
}catch(IOException ee){}
flag = NotModify;
}
}
public int isSaveDialog(){
Object[] options = {
" Yes ",
" No ",
"cancel"};
int n = JOptionPane.showOptionDialog(null,
"你編輯的文件中的文字已經改變，需要保存嗎？",
"我的記事本",
JOptionPane.YES_NO_CANCEL_OPTION,
JOptionPane.QUESTION_MESSAGE,
null,
options,
options[2]);
return n;
}
class CloseF implements ActionListener{
public void actionPerformed(ActionEvent e){
if(flag == NotModify){
System.exit(0);
}
int v = isSaveDialog();
if(v == 0) {
SaveF();
System.exit(0);
}
if(v == 1) {
System.exit(0);
}
}
}
class CutL implements ActionListener{
public void actionPerformed(ActionEvent e){
String selection = text.getSelectedText();
if(selection == null){
return ;
}
StringSelection clipString =
new StringSelection(selection);
clipbd.setContents(clipString, clipString);
text.replaceRange("",
text.getSelectionStart(),
text.getSelectionEnd());
}
}
class CopyL implements ActionListener{
public void actionPerformed(ActionEvent e){
String selection = text.getSelectedText();
if(selection == null){
return ;
}
StringSelection clipString =
new StringSelection(selection);
clipbd.setContents(clipString, clipString);
}
}
class PasteL implements ActionListener{
public void actionPerformed(ActionEvent e){
Transferable clipData =
clipbd.getContents(CutAndPaste.this);
try{
String clipString =
(String)clipData.getTransferData(DataFlavor.stringFlavor);
text.replaceRange(clipString,
text.getSelectionStart(),
text.getSelectionEnd());
}catch(Exception ex){
System.err.println("Not String flavor");
}
}
}
class AboutH implements ActionListener{
public void actionPerformed(ActionEvent e){
JOptionPane.showMessageDialog(null,
" 版權所有，翻版不究\n " +
"浙江工業大學軟件學院04級 殷正生 ",
"我的記事本",
JOptionPane.INFORMATION_MESSAGE);
}
}
class RedoL implements ActionListener{
public void actionPerformed(ActionEvent e){
// redo.setEnabled(undomanager.canRedo()); //have to modify
if(undomanager.canRedo()){
undomanager.redo();
}
}
}
class UndoL implements ActionListener{
public void actionPerformed(ActionEvent e){
// undo.setEnabled(undomanager.canUndo()); //have to modify
if(undomanager.canUndo()){
undomanager.undo();
}
}
}
class FindL implements ActionListener {
public void actionPerformed(ActionEvent e) {
String obj = text.getText();
obj = obj.replaceAll("\r\n"," ");
int index = 0;
int base = 0;
int relative = 0;
String s = "";
try{
do{
s = (String)JOptionPane.showInputDialog(
null,
"查找內容：" ,
"查找",
JOptionPane.PLAIN_MESSAGE,
null,
null,
s);
// System.out.println("\ns:" + s);
relative = obj.indexOf(s);
if(relative == -1){
text.select(0,0);
JOptionPane.showMessageDialog(null,
"已經到文件末尾");
break;
}
index = base + relative;
text.select(index, index + s.length()); //sethighlighted
// System.out.println("index:" + index);
// System.out.println("relative:" + relative);
obj = obj.substring(relative + s.length());
base = index + s.length();
// System.out.print("\nobj2:" + obj);
}while(relative > -1);
}catch(StringIndexOutOfBoundsException se){
text.select(0,0);
JOptionPane.showMessageDialog(null,
"已經到文件末尾");
}
catch(NullPointerException ne){
}
}
}
public static void main(String[] args) {
int width = Toolkit.getDefaultToolkit().getScreenSize().width;
int height = Toolkit.getDefaultToolkit().getScreenSize().height;
Console.run(new CutAndPaste(), 3*width/4, 3*height/4);
}
}
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