messagedialogframe.java

Java灵感编程1-101之21-40

package messagedialog;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/**
 * <p>Title: Message Dialog Demo</p>
 * <p>Description: This is a MessageDialog demo</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: d6-125</p>
 * @author Liujun
 * @version 1.0
 */

public class MessageDialogFrame extends JFrame {
  JPanel contentPane;
  JButton jButton1 = new JButton();
  GridBagLayout gridBagLayout1 = new GridBagLayout();
  ButtonGroup buttonGroup1 = new ButtonGroup();
  ButtonGroup buttonGroup2 = new ButtonGroup();
  JRadioButton jRadioButton1 = new JRadioButton();
  JRadioButton jRadioButton2 = new JRadioButton();
  JRadioButton jRadioButton3 = new JRadioButton();
  JRadioButton jRadioButton4 = new JRadioButton();
  JRadioButton jRadioButton5 = new JRadioButton();
  JRadioButton jRadioButton6 = new JRadioButton();
  JRadioButton jRadioButton7 = new JRadioButton();
  JRadioButton jRadioButton8 = new JRadioButton();
  JRadioButton jRadioButton9 = new JRadioButton();
  JLabel jLabel1 = new JLabel();
  JLabel jLabel2 = new JLabel();
  JRadioButton jRadioButton10 = new JRadioButton();

   //定义的私有变量
   String Title=null;//对话框标题
   private String messageString = "Message";//字符串消息对象
   private Icon messageIcon //图标消息对象
      = new ImageIcon("001.gif");
   private Font messageFont//Font消息对象
      = new Font("Serif", Font.PLAIN, 8);
   private Component messageComponent//组件消息对象
      = new JPanel()
         {  public void paintComponent(Graphics g)
            {  super.paintComponent(g);
               g.setFont(messageFont);
               g.drawString("Component", 0, 8);
            }
            public Dimension getMinimumSize()
            {  return new Dimension(12, 30);
            }
         };
 //Construct the frame
  public MessageDialogFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(MessageDialogFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(gridBagLayout1);
    this.setSize(new Dimension(336, 249));
    this.setTitle("Message Dialog Frame Demo");
    jButton1.setText("显示消息框");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    contentPane.setBorder(BorderFactory.createRaisedBevelBorder());
    jRadioButton1.setText("ERROR_MESSAGE");
    jRadioButton2.setText("INFORMATION_MESSAGE");
    jRadioButton3.setText("WARNING_MESSAGE");
    jRadioButton4.setText("QUESTION_MESSAGE");
    jRadioButton5.setText("PLAIN_MESSAGE");
    jRadioButton6.setText("String");
    jRadioButton7.setText("Icon");
    jRadioButton8.setText("Component");
    jRadioButton9.setText("Other");
    jLabel1.setText("各种消息类型");
    jLabel2.setText("消息");
    jRadioButton10.setText("Object[]");
    contentPane.add(jButton1,                  new GridBagConstraints(0, 0, 2, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 80, -6));
    contentPane.add(jRadioButton1,       new GridBagConstraints(0, 2, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton2,       new GridBagConstraints(0, 3, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton3,       new GridBagConstraints(0, 4, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton4,       new GridBagConstraints(0, 5, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton5,       new GridBagConstraints(0, 6, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton6,     new GridBagConstraints(1, 2, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton7,     new GridBagConstraints(1, 3, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton9,     new GridBagConstraints(1, 5, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
    buttonGroup1.add(jRadioButton1);
    buttonGroup1.add(jRadioButton2);
    buttonGroup1.add(jRadioButton3);
    buttonGroup1.add(jRadioButton4);
    buttonGroup1.add(jRadioButton5);
    buttonGroup2.add(jRadioButton6);
    buttonGroup2.add(jRadioButton7);
    buttonGroup2.add(jRadioButton8);
    buttonGroup2.add(jRadioButton9);
    buttonGroup2.add(jRadioButton10);
    contentPane.add(jLabel2,  new GridBagConstraints(1, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jLabel1,  new GridBagConstraints(0, 1, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton10,   new GridBagConstraints(1, 6, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jRadioButton8,  new GridBagConstraints(1, 4, 1, 1, 0.0, 0.0
            ,GridBagConstraints.NORTH, GridBagConstraints.HORIZONTAL, new Insets(-5, 0, 5, 0), 0, 0));
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  public Object getMessage()
   {  //用于得到消息对象
      if (jRadioButton6.isSelected())
         return messageString;//返回字符串消息对象
      else if (jRadioButton7.isSelected())
         return messageIcon;//返回图标消息对象
      else if (jRadioButton8.isSelected())
         return messageComponent;//返回组件消息对象
      else if (jRadioButton10.isSelected())
         return new Object[]//返回新建立一个混合对象
         {  messageString,
            messageIcon,
            messageComponent,
            messageFont
         };
      else if (jRadioButton9.isSelected())
         return messageFont;//返回Font消息对象
      else return null;
   }

   public int getType()
   {    String s=null;
    if (jRadioButton1.isSelected()){
         s ="ERROR_MESSAGE";//设置消息类型
         Title="－－－有错误";//设置标题
         }
      else if (jRadioButton2.isSelected()){
          s ="INFORMATION_MESSAGE";//设置消息类型
         Title="－－－是提醒消息";//设置标题
         }
      else if (jRadioButton3.isSelected()){
          s ="WARNING_MESSAGE";//设置消息类型
         Title="－－－警告消息";//设置标题
         }
      else if (jRadioButton4.isSelected()){
          s ="QUESTION_MESSAGE";//设置消息类型
         Title="－－－是一个问题";//设置标题
         }
      else if(jRadioButton5.isSelected()){
          s ="PLAIN_MESSAGE";//设置消息类型
         Title="－－－一般的消息";//设置标题
        }
      try
      {  Class cl = JOptionPane.class;//得到对话框类型
         return cl.getField(s).getInt(cl);//根据消息类型返回类型代码
      }
      catch(Exception e)
      {  return -1;
      }
   }

  void jButton1_actionPerformed(ActionEvent e) {
     int Type=getType();//返回消息类型码，显示消息对话框
         JOptionPane.showMessageDialog(this,
            getMessage(),
            "消息框演示"+Title,
            Type);
  }
}