import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.media.*;
import java.io.*;
import java.util.*;//為了導(dǎo)入Vector
public class MediaPlayer extends JFrame implements ActionListener,Runnable
{
 private JMenuBar          bar;//菜單條
 private JMenu             fileMenu,choiceMenu,aboutMenu;
 private JMenuItem         openItem,openDirItem,closeItem,about,infor;
 private Player            player;//Play是個(gè)實(shí)現(xiàn)Controller的接口
 private File              file,listFile;//利用File類結(jié)合JFileChooser進(jìn)行文件打開操作,后者與listfile有關(guān)
 private Container         c;
 private String            title;//標(biāo)題
 private FileDialog        fd;
 private JPanel            panel,panelSouth;

    private JList             list;//播放清單
    private JScrollPane       scroll;//使播放清單具有滾動(dòng)功能
    private ListValues        listWriteFile;//用于向文件中讀取對(duì)象
    private ObjectInputStream input;//對(duì)象輸入流
    private ObjectOutputStream output;//對(duì)象輸出流
    
    private JPopupMenu        popupMenu;//鼠標(biāo)右鍵彈出菜單
    private JMenuItem         del,delAll,reName;      //彈出菜單顯示的菜單項(xiàng),包括刪除,全部刪除和重命名
    
    private Vector            fileName,dirName,numList;
    private String            files,dir;
    private int               index;//曲目指針
    private int               indexForDel;//標(biāo)志要?jiǎng)h除的列表項(xiàng)目的索引
    private ButtonGroup       buttonGroup;//控制按鈕組
    private JRadioButtonMenuItem[]    buttonValues;
    private String[]          content={"隨機(jī)播放","順序播放","單曲循環(huán)"};
    
    private DialogDemo        dialog1;
   
    
 MediaPlayer()//構(gòu)造函數(shù)
 {
  super("java音頻播放器");//窗口標(biāo)題
     
  c=getContentPane();
  c.setLayout(new BorderLayout());
     
  fileName=new Vector(1);
  dirName=new Vector(1);
  numList=new Vector(1);//構(gòu)造三個(gè)容器用于支持播放清單
  listFile=new File("listfile");//直接存于此目錄
  Thread readToList=new Thread(this); 
  list=new JList();
  list.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
  list.setSelectionForeground(new Color(0,150,150));
  list.setVisibleRowCount(10);
  list.setFixedCellHeight(12);
  list.setFixedCellWidth(250);
  list.setFont(new Font("Serif",Font.PLAIN,12));
  list.setBackground(new Color(227,136,240));
  list.setToolTipText("點(diǎn)右鍵顯示更多功能");//設(shè)置各個(gè)屬性
  list.addMouseListener(new MouseAdapter()
  {
   public void mouseClicked(MouseEvent e)
   {
                if (e.getClickCount() == 2) //判斷是否雙擊
                {
                   index = list.locationToIndex(e.getPoint());//將鼠標(biāo)坐標(biāo)轉(zhuǎn)化成list中的選項(xiàng)指針
                   createPlayer2();
     
                }
            }
            public void mouseReleased(MouseEvent e)
            {
             checkMenu(e);//判斷是否鼠標(biāo)右鍵,若是，彈出popupmenu,然后進(jìn)行相應(yīng)的菜單操作
            }
  }
  );
  scroll=new JScrollPane(list);//用于存放播放列表
  readToList.start();//啟動(dòng)線程，加載播放列表,若不啟動(dòng)，則程序在第二次啟動(dòng)時(shí)播放列表中沒有任何東西
  try
  {
   Thread.sleep(10);//每10秒鐘檢測(cè)一下是否應(yīng)該停止播放
  }
  catch(InterruptedException e)
  {
   e.printStackTrace();
  }
  
  bar=new JMenuBar();
  bar.setBackground(Color.green);
  setJMenuBar(bar);//此兩行創(chuàng)建菜單欄并放到此窗口程序
  fileMenu=new JMenu("文件");
  bar.add(fileMenu);
  
  choiceMenu=new JMenu("控制");
  bar.add(choiceMenu);
  
  aboutMenu=new JMenu("幫助");
  bar.add(aboutMenu);
  
  openItem    =new JMenuItem("打開文件");
  openDirItem =new JMenuItem("打開目錄");
  closeItem   =new JMenuItem("退出程序");
  openItem.addActionListener(this);
  openDirItem.addActionListener(this);
  closeItem.addActionListener(this);
  fileMenu.add(openItem);
  fileMenu.add(openDirItem);
  fileMenu.add(closeItem);
  buttonGroup=new ButtonGroup();
  buttonValues=new JRadioButtonMenuItem[3];
  for(int bt=0;bt<3;bt++)
  {
   buttonValues[bt]=new JRadioButtonMenuItem(content[bt]);
   buttonGroup.add(buttonValues[bt]);
   choiceMenu.add(buttonValues[bt]);
  }
  buttonValues[0].setSelected(true);
  choiceMenu.addSeparator();
  
  
  infor=new JMenuItem("軟件簡(jiǎn)介");
  aboutMenu.add(infor);
  infor.addActionListener(this);
     
     about=new JMenuItem("關(guān)于作者");
  about.addActionListener(this);
  aboutMenu.add(about);
  //菜單欄設(shè)置完畢
  
  panel=new JPanel();
  panel.setLayout(new BorderLayout());
  panel.setBackground(new Color(227,136,240));
  c.add(panel,BorderLayout.CENTER);
  
  panelSouth=new JPanel();
  panelSouth.setLayout(new BorderLayout());
  c.add(panelSouth,BorderLayout.SOUTH);
  
  popupMenu=new JPopupMenu();
  del      =new JMenuItem("刪除");//鼠標(biāo)右鍵彈出菜單對(duì)象實(shí)例化
  popupMenu.add(del);
  del.addActionListener(this);
  popupMenu.setBackground(Color.green);
  
  delAll   =new JMenuItem("全部刪除");
  popupMenu.add(delAll);
  delAll.addActionListener(this);
  reName   =new JMenuItem("重命名");
  popupMenu.add(reName);
  reName.addActionListener(this);
  
 
  
  scroll=new JScrollPane(list);//用于存放播放列表
  panelSouth.add(scroll,BorderLayout.CENTER);
  
  
  dialog1=new DialogDemo(MediaPlayer.this,"軟件說明");
  
  this.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);//設(shè)定窗口關(guān)閉方式
  this.setLocation(400,250);//設(shè)定窗口出現(xiàn)的位置
  setSize(350,330);
  this.setResizable(false);//設(shè)置播放器不能隨便調(diào)大小
  this.setVisible(true);//此句不可少，否則窗口會(huì)不顯示
  
 }
 public void actionPerformed(ActionEvent e)
 {
  if(e.getSource()==openItem)
  {
   openFile();
  }
  if(e.getSource()==openDirItem)//打開目錄
  {
   openDir();
  }
  if(e.getSource()==closeItem)//退出播放器
  {
   exity_n();
  }
  if(e.getSource()==about)
  {
   JOptionPane.showMessageDialog(this,"此簡(jiǎn)易播放器由計(jì)科053\n"
   +"郝燕青\n  "+"        完成            ",
   "參與者",
   JOptionPane.INFORMATION_MESSAGE);
  }
  if(e.getSource()==del)//刪除后后面的選項(xiàng)要跟著前移
  {
   fileName.removeElementAt(indexForDel);
   dirName.removeElementAt(indexForDel);
   numList.removeAllElements();//從三個(gè)容器里面移除此項(xiàng)
   Enumeration enumFile=fileName.elements();
   while(enumFile.hasMoreElements())
   {
    numList.addElement((numList.size()+1)+"."+enumFile.nextElement());
    //numList添加元素，顯示播放列表中
   }
   list.setListData(numList);
  }
  
  if(e.getSource()==delAll)//全部刪除
  {
   fileName.removeAllElements();
   dirName.removeAllElements();
   numList.removeAllElements();
   list.setListData(numList);
  }
  
  if(e.getSource()==reName)//重命名
  {
   String name;
   try
   {
    name=reNames();
    fileName.setElementAt(name,indexForDel);//indexForDel(從0開始）是目前選中的歌曲項(xiàng)
    numList.setElementAt((indexForDel+1)+"."+name,indexForDel);
   }
   catch(Exception e2)
   {
   }
   
  }
  if(e.getSource()==infor)
  {
   dialog1.setVisible(true);
  }
 }
 
 public static void main(String[] args)
 {
  final MediaPlayer mp=new MediaPlayer();
  mp.addWindowListener(new WindowAdapter()//注冊(cè)窗口事件
  {
   public void windowClosing(WindowEvent e)
      {
        mp.exity_n();
      }
  }
  
  );
 }
 
 private void openFile()
 {
   fd = new FileDialog(this);
   fd.setVisible(true);
   if (fd.getFile() != null)
   {
    title = fd.getDirectory() + fd.getFile();
    files=fd.getFile();
    file=new File(title);
    addList(fd.getFile());
   }
 }
 private void openDir()//本來用的是FileDialog，但是它打開的是文件而不是目錄，所以就用了JFileChooser
 {
  JFileChooser fileChooser=new JFileChooser();
  fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
  int result=fileChooser.showOpenDialog(this);
  if(result==JFileChooser.CANCEL_OPTION)
      return;
  file=fileChooser.getSelectedFile();
  if(file==null||file.getName().equals(""))
  JOptionPane.showMessageDialog(this,"錯(cuò)誤的路徑",
  "出錯(cuò)了",JOptionPane.ERROR_MESSAGE);
  String[] sFiles=file.list();
  for(int i=0;i<sFiles.length;i++)//此處若是調(diào)用addList（）則效率降低
  {
   fileName.addElement(sFiles[i]);
   numList.addElement((numList.size()+1)+"."+sFiles[i]);
   dirName.addElement(file.getAbsolutePath()+"\\"+sFiles[i]);
  }
  list.setListData(numList);
 }