mypointaction.java~5~

Java画版程序。......................要求变态。

package myshapeaction;

/**
 * Title:
 * Description:
 * Copyright:    Copyright (c) 2002
 * Company:
 * @author
 * @version 1.0
 */
import java.awt.event.*;
import java.util.*;
import myframe.*;
import myshape.*;

public class MyPointAction  extends  MyActionAdapter{

   public MyPointAction() {
   }

   public boolean mousePressed(MouseEvent e,Object o){
     LinkedList l=(LinkedList)o;
     if(l.isEmpty()){
       MyPoint point=new MyPoint(e.getX(),e.getY());
       drawedItemList.add(point);
     }
     else{
       if(l.size()>1)return false;
       Iterator it=l.iterator();
       while(it.hasNext()){
        if((it.next() instanceof MyPoint)){
         break;
        }
       }
       if(!it.hasNext()){
       MyPoint point=new MyPoint(e.getX(),e.getY());
       drawedItemList.add(point);
       }

     }
     return true;

   };


}