//: c13:CutAndPaste.java
// From Thinking in Java, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Using the clipboard
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.datatransfer.*;

public class CutAndPaste extends JFrame  {
  JMenuBar mb = new JMenuBar();
  JMenu edit = new JMenu("Edit");
  JMenuItem
    cut = new JMenuItem("Cut"),
    copy = new JMenuItem("Copy"),
    paste = new JMenuItem("Paste");
  JTextArea text = new JTextArea(20, 20);
  Clipboard clipbd = 
    getToolkit().getSystemClipboard();
  public CutAndPaste()  {
    cut.addActionListener(new CutL());
    copy.addActionListener(new CopyL());
    paste.addActionListener(new PasteL());
    edit.add(cut);
    edit.add(copy);
    edit.add(paste);
    mb.add(edit);
    setJMenuBar(mb);
    getContentPane().add(text);
  }
  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 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 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 evt) {
        System.out.println("not String flavor");
      }
    }
  }
  public static void main(String[] args) {
    JFrame frame = new CutAndPaste();
    frame.addWindowListener(
      new WindowAdapter() {
        public void windowClosing(WindowEvent e){
          System.exit(0);
        }
      });
    frame.setSize(300, 200);
    frame.setVisible(true);
  }
} ///:~