package jalview.appletgui;

import java.awt.event.*;
import java.awt.*;
import jalview.datamodel.*;

public class AnnotationLabels extends Panel
{
  boolean active = false;
  Image image;
  AlignmentPanel ap ;
  boolean resizing = false;
  int oldY, mouseX;
  static String ADDNEW = "Add new row";
  static String HIDE = "Hide this row";
  static String DELETE = "Delete this row";
  static String SHOWALL="Show all hidden rows";
  int selectedRow = 0;
  int scrollOffset = 0;

  public AnnotationLabels(AlignmentPanel ap)
  {
    this.ap = ap;
    setLayout(null);

    java.net.URL url = getClass().getResource("/images/idwidth.gif");
    if (url != null)
      image = java.awt.Toolkit.getDefaultToolkit().getImage(url);

    try
    {
      MediaTracker mt = new MediaTracker(this);
      mt.addImage(image, 0);
      mt.waitForID(0);
    }
    catch (Exception ex) {}
  }

  public void setScrollOffset(int y)
  {
    scrollOffset = y;
    repaint();
  }

  public void paint(Graphics g)
  {
    drawComponent(g);
  }

  public void drawComponent(Graphics g)
  {
    FontMetrics fm = g.getFontMetrics(g.getFont());
    g.setColor(Color.white);
    g.fillRect(0,0, getSize().width, getSize().height);

    g.translate(0, scrollOffset);
    g.setColor(Color.black);

   AlignmentAnnotation[] aa = ap.av.alignment.getAlignmentAnnotation();
   int y = g.getFont().getSize();
   int x = 0;

   if(aa!=null)
   for(int i=0; i<aa.length; i++)
   {
     if(!aa[i].visible)
       continue;

     x = getSize().width - fm.stringWidth(aa[i].label)-3;

     if(aa[i].isGraph)
       y+=(aa[i].height/3);

     g.drawString(aa[i].label, x, y);

     if(aa[i].isGraph)
       y+=(2*aa[i].height/3);
    else
       y+=aa[i].height;
   }

   if (active)
   {
     if (image != null)
       g.drawImage(image, 2, 0, this);
   }

   if (aa == null || aa.length<1)
   {
     g.drawString("Right click", 2, 8);
     g.drawString("to add annotation", 2, 18);
   }



  }

}