Java从入门到精通 - Swing高级JInternalFrameTest内部窗体

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyVetoException;
import java.net.URL;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class JInternalFrameTest extends JFrame{

 JDesktopPane desktopPane = null;   //桌面面板
 InternalFrame plnFrame = null;     //人事管理
 InternalFrame rlnFrame = null;     //帐物管理
 InternalFrame tlnFrame = null;     //待遇管理
 public JInternalFrameTest()
 {
  super();
  setTitle("人事管理");
  setBounds(100,100,350,150);
  setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  //创建桌面面板
  desktopPane = new JDesktopPane();
  desktopPane.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);  //设置内部窗体拖动模式
  getContentPane().add(desktopPane,BorderLayout.CENTER);
  //桌面添加背景图片
  final JLabel backLabel = new JLabel();
  URL resource = this.getClass().getResource("back.jpg");  //图片
  ImageIcon icon = new ImageIcon(resource);   //设置图片
  backLabel.setIcon(icon);
  backLabel.setBounds(0,0,icon.getIconWidth(),icon.getIconHeight());  //设置边界
  desktopPane.add(backLabel,new Integer(Integer.MIN_VALUE));   //添加到指定索引位置
  
  //添加button
  final JPanel panel = new JPanel();
  getContentPane().add(panel,BorderLayout.NORTH);
  JButton jButton_p = new JButton("人事");
  jButton_p.addActionListener(new BAlistener(null,"人事"));   //监听事件
  JButton jButton_r = new JButton("帐物");
  jButton_r.addActionListener(new BAlistener(null,"帐物"));   //监听事件
  JButton jButton_t = new JButton("待遇");
  jButton_t.addActionListener(new BAlistener(null,"待遇"));   //监听事件
  panel.add(jButton_p);
  panel.add(jButton_r);
  panel.add(jButton_t);
 }
 private class BAlistener implements ActionListener
 {
  InternalFrame inFrame;
  String title;
  public BAlistener(InternalFrame inFrame ,String title){
   this.inFrame = inFrame;
   this.title = title;
  }
  public void actionPerformed(ActionEvent e){
   if(inFrame ==null || inFrame.isClosed()){
    JInternalFrame[] allFrames = desktopPane.getAllFrames();
    int titleBarHight = 30*allFrames.length;
    int x= 10+titleBarHight,y=x;
    int width = 250,height = 180;
    inFrame = new InternalFrame(title);
    inFrame.setBounds(x,y,width,height);//设置位置与大小
    inFrame.setVisible(true);   //可见
    desktopPane.add(inFrame);   //添加到桌面面板
   }
   try
   {
    inFrame.setSelected(true);
   }catch(PropertyVetoException propertyVetoE){
    propertyVetoE.printStackTrace();
   }
  }
 }
 /**
  * @param args
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  JInternalFrameTest jInternalFrameTest= new JInternalFrameTest();
  jInternalFrameTest.setVisible(true);
 }

}
//自定义一个InternalFrame
class InternalFrame extends JInternalFrame
{
 public InternalFrame(String title)
 {
  super();
  setTitle(title);   //设置内部窗体标题
  setResizable(true);  //允许自由调整大小
  setClosable(true);  //提供关闭按钮
  setIconifiable(true); //设置提供图标化按钮
  setMaximizable(true); //设置提供最大化按钮
  URL resource = this.getClass().getResource("caption.png");
  ImageIcon icon = new ImageIcon(resource);
  setFrameIcon(icon);
 }
}