package com.oreilly.jent.jsp;

/**
 * In general, you may use the code in this book in your programs and 
 * documentation. You do not need to contact us for permission unless 
 * you're reproducing a significant portion of the code. For example, 
 * writing a program that uses several chunks of code from this book does 
 * not require permission. Selling or distributing a CD-ROM of examples 
 * from O'Reilly books does require permission. Answering a question by 
 * citing this book and quoting example code does not require permission. 
 * Incorporating a significant amount of example code from this book into 
 * your product's documentation does require permission.
 * 
 * We appreciate, but do not require, attribution. An attribution usually 
 * includes the title, author, publisher, and ISBN. For example: 
 * 
 *   "Java Enterprise in a Nutshell, Third Edition, 
 *    by Jim Farley and William Crawford 
 *    with Prakash Malani, John G. Norman, and Justin Gehtland. 
 *    Copyright 2006 O'Reilly Media, Inc., 0-596-10142-2."
 *  
 *  If you feel your use of code examples falls outside fair use or the 
 *  permission given above, feel free to contact us at 
 *  permissions@oreilly.com.
 */

import java.util.Calendar;
import java.util.GregorianCalendar;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.Tag;
import javax.servlet.jsp.tagext.TagSupport;

public class EveningTag extends TagSupport { 
  private int i_dayStart = 9; 
  private int i_dayEnd = 17; // 24 hour time 
  
  // In production, we should propagate errors with exceptions 
  public void setDayStart(String value) { 
    i_dayStart = Integer.parseInt(value); 
  } 
  
  public void setDayEnd(String value) { 
    i_dayEnd = Integer.parseInt(value); 
  } 
  
  public int doStartTag(  ) throws JspException { 
    int hour = GregorianCalendar.getInstance(  ).get(Calendar.HOUR_OF_DAY); 
    
    if((hour >= i_dayStart) && (hour <= i_dayEnd)) 
      return Tag.SKIP_BODY; 
    
    return Tag.EVAL_BODY_INCLUDE; 
  } 
}