package tags;

import javax.servlet.ServletContext;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;
import java.io.*;

public class ListPagesTag extends TagSupport {
   private Long totalitems;
   private Long position;
   private Long step;
   private Long pages;

   public void setTotalitems(int totalitems) {
      this.totalitems = new Long(totalitems);
   }

   public void setPosition(int position) {
      this.position = new Long(position);
   }

   public void setStep(int step) {
      this.step = new Long(step);
   }

   public void setPages(int pages) {
      this.pages = new Long(pages);
   }

   public int doStartTag() throws JspException {
     String strPages =  "<a href=''>Prev</a>" ;
     int begin =  position.intValue() / step.intValue();
         begin = begin * step.intValue() ;
     if (begin ==  0 ) begin =  1 ;
     int end = begin + step.intValue();
     for (int i = begin; i<=end; i++)
     {
       if (i==position.intValue())  strPages = strPages +  "<b>" +i+ "</b>" ;
         else
       strPages = strPages +  "<a href=''>["  + i +  "]</a>" ;
     }
      strPages = strPages+ "<a href=''>Next</a>" ;
      try {
        pageContext.getOut().print(strPages);
      }
      catch (IOException ex) {
      }
      return SKIP_BODY;
   }

   public int doEndTag() throws JspException {
      return EVAL_PAGE;
   }
}