package jalview.bin;

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import jalview.datamodel.*;
import jalview.io.*;
import jalview.appletgui.AlignFrame;

public class JalviewLite extends Applet
{
  static int lastFrameX = 200;
  static int lastFrameY = 200;
  static Applet applet;
  boolean fileFound = true;
  String file = "No file";
  Button launcher = new Button("Start Jalview");

  public void init()
  {
    applet = this;
    this.setBackground(Color.white);

    file = getParameter("file");
    if (file != null)
    {
      add(launcher);
      file = applet.getCodeBase() + file;
      launcher.addActionListener(new java.awt.event.ActionListener()
     {
       public void actionPerformed(ActionEvent e)
       {
         String format = jalview.io.IdentifyFile.Identify( file, "URL");
         LoadFile(file, "URL", format);
       }
     });
    }
     else
     {
       file = "NO FILE";
       fileFound = false;
     }
   }


   public static void showURL(String url)
   {
     try{
       applet.getAppletContext().showDocument(new java.net.URL(url), "HELP_WINDOW");
     }catch(Exception ex){}
   }

   public void LoadFile(String file, String protocol,  String format)
   {
     LoadingThread loader = new LoadingThread(file, protocol, format, this);
     loader.start();
   }

   public static void addFrame(final Frame frame, String title, int width, int height)
   {
     frame.setLocation(lastFrameX,lastFrameY);
     lastFrameX+=40; lastFrameY+=40;
     frame.setSize(width,height);
     frame.setTitle(title);
     frame.addWindowListener(new WindowAdapter()
    {
      public void windowClosing(WindowEvent e)
      {
        frame.dispose();
      }
    });
    frame.setVisible(true);
   }


   public void paint(Graphics g)
   {
     if(!fileFound)
     {
       g.setColor(new Color(200,200,200));
       g.setColor(Color.cyan);
       g.fillRect(0,0,getSize().width, getSize().height);
       g.setColor(Color.red);
       g.drawString("Jalview can't open file", 5, 15);
       g.drawString("\""+ file+"\"", 5, 30);
     }
   }

   class LoadingThread extends Thread
   {
     String file, protocol, format;
     JalviewLite jlapplet;

     public LoadingThread(String file, String protocol,  String format, JalviewLite applet)
     {
       this.file = file;
       this.protocol = protocol;
       this.format = format;
       this.jlapplet = applet;
     }
     public void run()
     {
       SequenceI [] sequences = null;
       sequences = FormatAdapter.readFile(file, protocol, format);

       if (sequences != null && sequences.length>0)
       {
         AlignFrame af = new AlignFrame(new Alignment(sequences), jlapplet );
         addFrame(af, file, AlignFrame.NEW_WINDOW_WIDTH, AlignFrame.NEW_WINDOW_HEIGHT);
         af.statusBar.setText("Successfully loaded file " + file);
       }
       else
       {
         fileFound = false;
         remove(launcher);
         repaint();
       }
     }
   }
}