package javamediaplayer;import java.awt.*;import javax.swing.*;import java.awt.event.*;/** * Title:        使用Java制作的媒體播放器 * Description:  這個播放器利用了Java Media Frame API來實現主要功能 * Copyright:    Copyright (c) 2003 * Company:      北京師范大學繼續教育學院99計算機應用 * @author       郭漢文 * @version      1.0 */public class OpenUrlDlg extends JDialog {  public final static  int ACTION_OPEN=1;  public final static  int ACTION_CANCEL=0;  private String      nameUrlDefault = null;  private int       intAction = ACTION_CANCEL;  protected JFrame         frameOwner = null;  JPanel panelInput = new JPanel();  GridLayout gridLayout1 = new GridLayout();  FlowLayout flowLayout1 = new FlowLayout();  JLabel jLabel1 = new JLabel();  JTextField txtURL = new JTextField();  JPanel panelCmd = new JPanel();  JButton cmdOpen = new JButton();  JButton cmdCancel = new JButton();  public OpenUrlDlg(JFrame frame, String nameUrlDefault) {    super(frame, "Open Url", true);    frameOwner=frame;    this.nameUrlDefault =nameUrlDefault;    try {      jbInit();      pack();    }    catch(Exception ex) {      ex.printStackTrace();    }  }  public OpenUrlDlg() {    this(null, "");  }  void jbInit() throws Exception {    panelInput.setLayout(flowLayout1);    this.setTitle("Open Url");    this.getContentPane().setLayout(gridLayout1);    gridLayout1.setRows(2);    gridLayout1.setColumns(1);    jLabel1.setForeground(Color.red);    jLabel1.setText("URL:");    cmdOpen.setBackground(new Color(180, 255, 50));    cmdOpen.setForeground(Color.magenta);    cmdOpen.setText("Open");    txtURL.setText(nameUrlDefault);    cmdOpen.addActionListener(new java.awt.event.ActionListener() {      public void actionPerformed(ActionEvent e) {        cmdOpen_actionPerformed(e);      }    });    cmdCancel.setBackground(new Color(180, 255, 150));    cmdCancel.setForeground(Color.magenta);    cmdCancel.setText("Canel");    cmdCancel.addActionListener(new java.awt.event.ActionListener() {      public void actionPerformed(ActionEvent e) {        cmdCancel_actionPerformed(e);      }    });    panelCmd.setBackground(Color.orange);    panelInput.setBackground(Color.orange);    panelInput.add(jLabel1, null);    panelInput.add(txtURL, null);    txtURL.setColumns(30);    this.getContentPane().add(panelInput, null);    this.getContentPane().add(panelCmd, null);    panelCmd.add(cmdOpen, null);    panelCmd.add(cmdCancel, null);    this.pack();    this.autoPosition() ;    this.setResizable ( false );  }  public void addNotify () {         this.setBackground ( Color.lightGray );         super.addNotify ();        autoPosition ();    }  public void autoPosition () {     Dimension       dim;     Dimension       dimFrame;     Dimension       dimDialog;     Dimension       dimScreen;     Point           point;     Insets          insets;     point=frameOwner.getLocationOnScreen();     dimFrame=frameOwner.getSize();     dimDialog=this.getSize();     point.y=point.y+(int)(dimFrame.getHeight()-dimDialog.getHeight())/2;     this.setLocation(point) ;    }   public String getUrl () {        String  nameUrl;        nameUrl = txtURL.getText();       return ( nameUrl );    }  void cmdOpen_actionPerformed(ActionEvent e) {        this.setAction(this.ACTION_OPEN );        this.dispose() ;  }  void cmdCancel_actionPerformed(ActionEvent e) {        this.setAction(this.ACTION_CANCEL  );        this.dispose() ;  }  protected void setAction ( int intAction ) {        this.intAction = intAction;  }  public int getAction () {        return ( intAction );    }}