package greenfoot.export.mygame;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.http.entity.mime.FormBodyPart;
import org.apache.http.entity.mime.content.FileBody;




| A FormBodyPart which tracks upload progress.
|
| @author Davin McCall
|
public class ProgressTrackingPart
extends FormBodyPart{    
   public ProgressTrackingPart(String partName, File file, MyGameClient listener)
       
   throws FileNotFoundException
   {        
      super(partName, new ProgressTrackingFileBody(file, listener));     
      }
    
   
   private static class ProgressTrackingFileBody
extends FileBody
   {        
      private MyGameClient listener;
        
       
      public ProgressTrackingFileBody(File file, MyGameClient listener)
       {
         super(file);
           
         this.listener = listener;         
         }
        
       
      @Override
       
      public void writeTo(OutputStream output) throws IOException
       {
         if (getContentLength() == 0) {                
            return;             
            }

           
         byte [] buf = new byte[4096];
         InputStream istream = getInputStream();
           
         try {
         int len = istream.read(buf);
         while (len != -1){
            output.write(buf, 0, len);
            listener.progress(len);
            len = istream.read(buf);                 
            }             
         }
           
      finally {
      istream.close();             
      }         
   }     
} 
}