package jalview.javascript;

import jalview.appletgui.AlignFrame;
import jalview.bin.JalviewLite;
import jalview.datamodel.SequenceI;
import jalview.structure.VamsasListener;
import netscape.javascript.JSObject;

public class MouseOverListener extends JSFunctionExec implements VamsasListener,JsCallBack
{
  AlignFrame _af;
  String _listener;
  SequenceI last = null;

  int i = -1;

  public void mouseOver(SequenceI seq, int index)
  {
    if (seq != last || i != index)
    {
        // this should really be a trace message.
        // Cache.log.debug("Mouse over " + v.getId() + " bound to "
        // + seq + " at " + index);
        last = seq;
        i = index;
        try {
        executeJavascriptFunction(_listener, new Object[] { _af, seq.getDisplayId(false), ""+(1+i)});
        } catch (Exception ex)
        {
          
          System.err.println("JalviewLite javascript error: Couldn't send mouseOver with handler '"+_listener+"'");
          if (ex instanceof netscape.javascript.JSException)
          {
            System.err.println("Javascript Exception: "+((netscape.javascript.JSException)ex).getMessage());
          }
          ex.printStackTrace();
      }
    }
  }
  
  public MouseOverListener(JalviewLite applet, AlignFrame af, String listener)
  {
    super(applet);
    _af = af;
    _listener = listener;
  }
  @Override
  public AlignFrame getAlignFrame()
  {
    return _af;
  }

  @Override
  public String getListenerFunction()
  {
    return _listener;
  }


}