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

public class Demon extends JPanel  implements ActionListener,Runnable
{
   public JButton replay=null,next=null,auto=null,stop=null;
   LinkedList 棋譜=null;
   Thread 自動演示=null;
   int index=-1;
   ChessBoard board=null;
   JTextArea text;
   JTextField 時間間隔=null;
   int time=1000;
   String 演示過程="";
   JSplitPane splitH=null,splitV=null;
   public  Demon(ChessBoard board)
   {    
        this.board=board;
        replay=new JButton("重新演示");
        next=new JButton("下一步");
        auto=new JButton("自動演示");
        stop=new JButton("暫停演示");
        自動演示=new Thread(this);
        replay.addActionListener(this);
        next.addActionListener(this);
        auto.addActionListener(this);
        stop.addActionListener(this); 
        text=new JTextArea(); 
        時間間隔=new JTextField("1");
        setLayout(new BorderLayout());
        JScrollPane pane=new JScrollPane(text);
        JPanel p=new JPanel(new GridLayout(3,2));
        p.add(next);
        p.add(replay);
        p.add(auto);
        p.add(stop);
        p.add(new JLabel("時間間隔(秒)",SwingConstants.CENTER)) ;
        p.add(時間間隔);
        splitV=new JSplitPane(JSplitPane.VERTICAL_SPLIT,pane,p);
        splitH=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,board,splitV);
        splitV.setDividerSize(5);
        splitV.setDividerLocation(400);
        splitH.setDividerSize(5);
        splitH.setDividerLocation(460);
        add(splitH,BorderLayout.CENTER); 
        validate();
    }   
 public void set棋譜(LinkedList 棋譜)
   { 
    this.棋譜=棋譜;
   }
 public char numberToLetter(int n)   
  { 
    char c='\0';
    switch(n)
     {
       case 1 : c='A'; break;
       case 2 : c='B'; break;
       case 3 : c='C'; break;
       case 4 : c='D'; break;
       case 5 : c='E'; break;
       case 6 : c='F'; break;
       case 7 : c='G'; break;
       case 8 : c='H'; break;
       case 9 : c='I'; break;
       case 10 : c='J'; break;
     } 
    return c;
  }
 public void actionPerformed(ActionEvent e)
  {
    if(e.getSource()==next)
      {
         index++;
         if(index<棋譜.size())
           { 
              演示一步(index);
           }
         else
           {
             演示結束("棋譜演示完畢");
           } 
       }
     if(e.getSource()==replay)
       {
          board=new ChessBoard(45,45,9,10);
          splitH.remove(board);
          splitH.setDividerSize(5);
          splitH.setDividerLocation(460);
          splitH.setLeftComponent(board);
          splitH.validate();
          index=-1;
          text.setText(null);
       }
     if(e.getSource()==auto)
       {
           next.setEnabled(false);
           replay.setEnabled(false); 
           try
              {
                time=1000*Integer.parseInt(時間間隔.getText().trim());
              }
           catch(NumberFormatException ee)
              {
                time=1000;
              } 
 
           if(!(自動演示.isAlive()))          
             {
                自動演示=new Thread(this);
                board=new ChessBoard(45,45,9,10);
                splitH.remove(board);
                splitH.setDividerSize(5);
                splitH.setDividerLocation(460);
                splitH.setLeftComponent(board);
                splitH.validate();
                text.setText(null);
                自動演示.start();
             }
   
       }
     if(e.getSource()==stop)
       {
          if(e.getActionCommand().equals("暫停演示"))
               {
                 演示過程="暫停演示";
                 stop.setText("繼續演示");
                 stop.repaint();
               }
          if(e.getActionCommand().equals("繼續演示"))
               {
                 演示過程="繼續演示";
                 自動演示.interrupt();   
                 stop.setText("暫停演示");
                 stop.repaint();
               }
       }
  }
  public synchronized void run()
  {
    for(index=0;index<棋譜.size();index++)
       {
         try{
              Thread.sleep(time);
            }
         catch(InterruptedException e)
            {
            }  
         while(演示過程.equals("暫停演示"))
            {  
                 try{
                      wait();  
                    }
                  catch(InterruptedException e)
                    {
                      notifyAll();  
                    }  
            }
         演示一步(index);
       }
     if(index>=棋譜.size())
       {
         演示結束("棋譜演示完畢");
         next.setEnabled(true);
         replay.setEnabled(true);  
       } 
  }
  public void 演示一步(int index)
  {
     MoveStep step=(MoveStep)棋譜.get(index);
          Point pStart=step.pStart;
          Point pEnd  =step.pEnd;
          int startI  =pStart.x;
          int startJ  =pStart.y;
          int endI    =pEnd.x;
          int endJ    =pEnd.y;
          ChessPiece piece=(board.point)[startI][startJ].getPiece();
      if((board.point)[endI][endJ].isPiece()==true)
          {
            ChessPiece pieceRemoved=(board.point)[endI][endJ].getPiece();
            (board.point)[endI][endJ].reMovePiece(pieceRemoved,board);
            board.repaint();
            (board.point)[endI][endJ].setPiece(piece,board);
            (board.point)[startI][startJ].set有棋子(false);
            board.repaint();
          }
      else
          {
            (board.point)[endI][endJ].setPiece(piece,board);
            (board.point)[startI][startJ].set有棋子(false);
                  
          }
      String 棋子類別=piece.棋子類別();
      String name=piece.getName();
      String m="#"+棋子類別+name+": "+
                   startI+numberToLetter(startJ)+" 到 "+endI+numberToLetter(endJ);
      text.append(m);
      if(piece.棋子類別().equals(board.黑方顏色))
            text.append("\n");
  }
 public void 演示結束(String message)
  {
    splitH.remove(board);
    splitH.setDividerSize(5);
    splitH.setDividerLocation(460);
    JLabel label=new JLabel(message);
    label.setFont(new Font("隸書",Font.BOLD,40));
    label.setForeground(Color.blue); 
    label.setHorizontalAlignment(SwingConstants.CENTER);
    splitH.setLeftComponent(label);
    splitH.validate();
  }
}