documentevent.txt

基本设计思路： 协同编辑开始

package untitled2;

import javax.swing.*;
import java.awt.*;
import com.borland.jbcl.layout.*;
import javax.swing.event.DocumentListener;
import javax.swing.event.DocumentEvent;

//import javax.swing.;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2005</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class FrameTest
    extends JFrame {
  JTextArea jTextArea1 = new JTextArea();
  GridBagLayout gridBagLayout1 = new GridBagLayout();
  //interface DocumentListener extends EventListener;
  public FrameTest() throws HeadlessException {
    try {
      jbInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  private void jbInit() throws Exception {
    this.getContentPane().setLayout(gridBagLayout1);
    this.getContentPane().add(jTextArea1,
                              new GridBagConstraints(0, 0, 1, 1, 1.0, 1.0
        , GridBagConstraints.CENTER, GridBagConstraints.BOTH,
        new Insets(0, 0, 165, 0), 341, 255));
    jTextArea1.getDocument().addDocumentListener(new Swing_OnValueChanged());
  }

  class Swing_OnValueChanged
      implements DocumentListener { //输出变化及结果
    public void changedUpdate(DocumentEvent e) {
      System.out.println("Attribute Changed" + e);
    }

    //System.out.println("Attribute Changed"+e);
    public void insertUpdate(DocumentEvent e) {
      System.out.println("Text Inserted:" + jTextArea1.getText());
      System.out.println(":"+e.getOffset());
       System.out.println(":"+e.getLength());
        System.out.println(":"+e.getType());
    }

    //System.out.println("Text Inserted:"+textField1.getText());
    public void removeUpdate(DocumentEvent e) {
      System.out.println("Text Removed:" + jTextArea1.getText());
      System.out.println(":"+e.getOffset());
      System.out.println(":"+e.getLength());
        System.out.println(":"+e.getType());
    } //System.out.println("Text Removed:"+jTextArea1.getText());
  }

  public static void main(String[] args) {
    FrameTest tf = new FrameTest();
    tf.show();
  }

}