waitingdlg.java

导出ORACLE数据库对象DDL语句的程序

package com.icbcsdc.ddlexp.ui.dialog;
import java.awt.AWTEvent;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Point;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.Timer;
import java.util.TimerTask;

import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JProgressBar;

import com.icbcsdc.ddlexp.pub.staticLog.Logger;
//import javax.swing.JPanel;
//import javax.swing.JProgressBar;

//import com.borland.jbcl.layout.XYConstraints;
//import com.borland.jbcl.layout.XYLayout;

/**
 * @author lijf
 * <p>进度条显示对话框</p>
 * <p>edit by zhangp</p>
 * <p>usage:</p>
 * <p>在构造函数中传人父窗体和主线程</p>
 * <p>可以显示在父窗体中间或屏幕中间或任意位置</p>
 * <p>主线程结束则窗体自动关闭</p>
 */
public class WaitingDlg extends Window implements ActionListener {
    public static long INTERVAL=1000;
    public static Font DEFAULT_FONT=new Font("宋体",Font.PLAIN,14); 

    public int WIDTH=350;//窗体宽度
    public int HEIGHT=150;//窗体高度
    public String IMAGE_FILE="img/progress.gif";    
    public String progressText=null;	//="节点正在连接中...";//进度条中显示的文字
    
    private java.awt.Frame parent;
    private DeamonThread thread;

     
  	/**
  	 * 构造函数
  	 * @param parent 父窗体
  	 * @param thread 主线程
  	 */
    public WaitingDlg(java.awt.Frame parent, DeamonThread thread,String text) {
        super(parent);
        parent.setEnabled(false);//禁止父窗体
        progressText=text;
        enableEvents(AWTEvent.WINDOW_EVENT_MASK);
        this.parent = parent;
        this.thread = thread;
        try {
            jbInit();
        } catch (Exception e) {
            parent.setEnabled(true);
        }
    }
    //Component initialization
    private void jbInit() throws Exception {
        Container contentPane=this;
        contentPane.setLayout(null);
        
        JLabel label=new JLabel();
        label.setBounds(0,0,WIDTH,HEIGHT);
        label.setBorder(BorderFactory.createLineBorder(Color.black));
        
        this.add(label);
        contentPane=label;
        
        //gif图片
        ImageIcon icon = new ImageIcon(IMAGE_FILE);
        JLabel imgLabel=new JLabel(icon);
        int imgW=icon.getIconWidth();
        int imgH=icon.getIconHeight();
        imgLabel.setBounds(0,0,imgW,HEIGHT);
        //add
        contentPane.add(imgLabel);
        
        //进度条
        JProgressBar progressBar = new JProgressBar();
        progressBar.setMinimum(0);
        progressBar.setMaximum(100);
        progressBar.setStringPainted(true);
        progressBar.setIndeterminate(true);
        progressBar.setString(progressText);
        progressBar.setFont(DEFAULT_FONT);
        progressBar.setForeground(Color.BLUE);
        progressBar.setBackground(Color.LIGHT_GRAY);
        int barHeight =20;
        int edge=10;
        progressBar.setBounds(imgW+edge,(HEIGHT-barHeight)/2,WIDTH-imgW-2*edge,barHeight);
        //add
        contentPane.add(progressBar);
        
        
        //this.setBackground(Color.MAGENTA);   
        this.setBackground(Color.LIGHT_GRAY); 
        this.setSize(new Dimension(WIDTH, HEIGHT));
                
        
        //下面的代码用于检测父进程，以便自动关闭本对话框
        final Timer timer = new Timer();
        TimerTask task = new TimerTask() {
            public void run() {
                if(thread!=null){
                   	//Logger.log(Logger.DEBUG,"thread:"+thread+"/RUNNING:"+thread.isRunning());
                   	//Logger.log(Logger.DEBUG,"thread:"+thread+"/ALIVE:"+thread.isAlive());
                    if( (!thread.isAlive()) ||(!thread.isRunning()) ){
                        parent.setEnabled(true);//启用父窗体
                        dispose();
                        timer.cancel();
                    }
                }
            }
        };
        timer.schedule(task, 0, INTERVAL);

    }
  
  //Overridden so we can exit when window is closed
//  protected void processWindowEvent(WindowEvent e) {
//  }

  
  //Close the dialog on a button event
  public void actionPerformed(ActionEvent e) {
  }
  
  
  /**
   * 以给定坐标点显示窗体
   * @param x
   * @param y
   */
  public void show(int x,int y){
      this.setLocation(x,y);
      show();
  }
  /**
   * 显示在父窗体中间
   */
  public void showInParentMiddle(){
      Dimension parentSize=parent.getSize();
      Dimension selfSize=this.getSize();
      Point loc=parent.getLocation();
      this.setLocation((parentSize.width - selfSize.width) / 2 + loc.x,
              (parentSize.height - selfSize.height) / 2 + loc.y);
      show();
  }
  /**
   * 显示在屏幕中间
   */
  public void showInScreenMiddle(){
      
      Dimension parentSize=this.getToolkit().getScreenSize();
      Dimension selfSize=this.getSize();
      Point loc=new Point(0,0);
      this.setLocation((parentSize.width - selfSize.width) / 2 + loc.x,
              (parentSize.height - selfSize.height) / 2 + loc.y);
      show();
  }
  
  public static void main(String[] args) {
      JFrame frame=new JFrame("mainForm");
      frame.addWindowListener(new WindowAdapter() {
          public void windowClosing(WindowEvent e) {
              System.exit(0);
          }
      });
      frame.setSize(400,400);
      frame.show();

      
      final DeamonThread mainthread=new DeamonThread();
      mainthread.start();
      
      WaitingDlg dlg = new WaitingDlg(frame,mainthread,"waiting...");

      //dlg.show(300,300);
      dlg.showInParentMiddle();
      //dlg.showInScreenMiddle();
      
      
}
	/**
	 * Returns the progressText.
	 * @return String
	 */
	public String getProgressText() {
		return progressText;
	}

	/**
	 * Sets the progressText.
	 * @param progressText The progressText to set
	 */
	public void setProgressText(String progressText) {
		this.progressText = progressText;
	}

}