package cwp.tags;

import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import java.io.*;
import javax.servlet.*;

/** The then part of an if tag.
 *  <P>
 *  Taken from Core Servlets and JavaServer Pages
 *  from Prentice Hall and Sun Microsystems Press,
 *  http://www.coreservlets.com/.
 *  &copy; 2000 Marty Hall; may be freely used or adapted.
 */

public class IfThenTag extends BodyTagSupport
{
  public int doStartTag() throws JspTagException
  {
    IfTag parent = (IfTag)findAncestorWithClass(this, IfTag.class);
    if (parent == null)
    {
      throw new JspTagException("then not inside if");
    }
    else if (!parent.hasCondition())
    {
      String warning = "condition tag must come before then tag";
      throw new JspTagException(warning);
    }

    if (parent.getCondition())
    {
		System.out.println("Testing THEN ");
		return(EVAL_BODY_INCLUDE);
    }
    else
    {
    	return(SKIP_BODY);
	}
  }

}