/*
    * Copyright (C) 2013 4th Line GmbH, Switzerland
    *
    * The contents of this file are subject to the terms of either the GNU
    * Lesser General Public License Version 2 or later ("LGPL") or the
    * Common Development and Distribution License Version 1 or later
    * ("CDDL") (collectively, the "License"). You may not use this file
    * except in compliance with the License. See LICENSE.txt for more
    * information.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   */
  package org.fourthline.cling.support.model.dlna.message.header;
  
  import org.fourthline.cling.model.message.header.InvalidHeaderException;
  import org.fourthline.cling.support.model.dlna.types.NormalPlayTime;
  
  /**
   * @author Mario Franco
   */
  public class RealTimeInfoHeader extends DLNAHeader<NormalPlayTime> {
  
      public static final String PREFIX = "DLNA.ORG_TLAG=";
      
      public RealTimeInfoHeader() {
      }
  
      @Override
      public void setString(String s) throws InvalidHeaderException {
          if (s.length() != 0 && s.startsWith(PREFIX) ) {
              try {
                  s = s.substring(PREFIX.length());
                  setValue(s.equals("*") ? null : NormalPlayTime.valueOf(s) );
                  return;
              } catch (Exception ex) {}
          }
          throw new InvalidHeaderException("Invalid RealTimeInfo header value: " + s);
      }
  
      @Override
      public String getString() {
          NormalPlayTime v = getValue();
          if (v == null)
              return PREFIX+"*";
          return PREFIX+v.getString();
      }
  }