view plaincopy to clipboardprint?
package MyFile;
import java.awt.*;
import java.io.*;
import java.awt.datatransfer.*;
import java.awt.event.*;
public class Editor extends Frame implements ActionListener {
TextArea textArea = new TextArea();
MenuBar menuBar = new MenuBar();
Menu fileMenu = new Menu("文件");
MenuItem newItem = new MenuItem("新建");
MenuItem openItem = new MenuItem("打开");
MenuItem saveItem = new MenuItem("保存");
MenuItem saveAsItem = new MenuItem("另存为");
MenuItem exitItem = new MenuItem("退出");
Menu editMenu = new Menu("编辑");
MenuItem selectItem = new MenuItem("全选");
MenuItem copyItem = new MenuItem("复制");
MenuItem cutItem = new MenuItem("剪切");
MenuItem pasteItem = new MenuItem("粘贴");
String fileName = null;
Toolkit toolKit=Toolkit.getDefaultToolkit(); //工具箱
Clipboard clipBoard=toolKit.getSystemClipboard();//剪切
private FileDialog openFileDialog= new FileDialog(this,"Open File",FileDialog.LOAD);
private FileDialog saveAsFileDialog= new FileDialog(this,"Save File As",FileDialog.SAVE);
public Editor(){
setFont(new Font("Times New Roman",Font.PLAIN,12));
setBackground(Color.white);
setSize(400,300);
fileMenu.add(newItem);
fileMenu.add(openItem);
fileMenu.addSeparator();
fileMenu.add(saveItem);
fileMenu.add(saveAsItem);
fileMenu.addSeparator();
fileMenu.add(exitItem);
editMenu.add(selectItem);
editMenu.addSeparator();
editMenu.add(copyItem);
editMenu.add(cutItem);
editMenu.add(pasteItem);
menuBar.add(fileMenu);
menuBar.add(editMenu);
setMenuBar(menuBar);
add(textArea);
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});
newItem.addActionListener(this);
openItem.addActionListener(this);
saveItem.addActionListener(this);
saveAsItem.addActionListener(this);
exitItem.addActionListener(this);
selectItem.addActionListener(this);
copyItem.addActionListener(this);
cutItem.addActionListener(this);
pasteItem.addActionListener(this);
}
public void actionPerformed(ActionEvent e) {
Object eventSource = e.getSource();
if(eventSource == newItem){
textArea.setText("");
}else if(eventSource == openItem){
openFileDialog.show();
fileName = openFileDialog.getDirectory()+openFileDialog.getFile();
if(fileName != null)
readFile(fileName);
}else if (eventSource == saveItem){
if(fileName != null)
writeFile(fileName);
}else if(eventSource == saveAsItem){
saveAsFileDialog.show();
fileName = saveAsFileDialog.getDirectory()+saveAsFileDialog.getFile();
if (fileName!= null)
writeFile(fileName);
}else if(eventSource == selectItem){
textArea.selectAll();
}else if(eventSource == copyItem){
String text=textArea.getSelectedText();
StringSelection selection=new StringSelection(text);
clipBoard.setContents(selection,null);
}else if(eventSource == cutItem){
String text=textArea.getSelectedText();
StringSelection selection=new StringSelection(text);
clipBoard.setContents(selection,null);
textArea.replaceRange("",textArea.getSelectionStart(),textArea.getSelectionEnd());
}else if(eventSource == pasteItem){
Transferable contents=clipBoard.getContents(this);
if(contents==null) return;
String text;
text="";
try{
text=(String)contents.getTransferData(DataFlavor.stringFlavor);//剪切内容传给字符串
}catch(Exception exception){
}
textArea.replaceRange(text,textArea.getSelectionStart(),textArea.getSelectionEnd());
}else if(eventSource == exitItem){
System.exit(0);
}
}
public void readFile(String fileName){
try{
File file = new File(fileName);
FileReader readIn = new FileReader(file);
int size = (int)file.length();
int charsRead = 0;
char[] content = new char[size];
while(readIn.ready())
charsRead += readIn.read(content, charsRead, size - charsRead);
readIn.close();
textArea.setText(new String(content, 0, charsRead));
}
catch(IOException e){
System.out.println("Error opening file");
}
}
public void writeFile(String fileName){
try{
File file = new File (fileName);
FileWriter writeOut = new FileWriter(file);
writeOut.write(textArea.getText());
writeOut.close();
}
catch(IOException e){
System.out.println("Error writing file");
}
}
}
