/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

/*

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * 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.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

#include "ns3/object.h"

#include "ns3/uinteger.h"

#include "ns3/traced-value.h"

#include "ns3/trace-source-accessor.h"

#include <iostream>

using namespace ns3;

class MyObject : public Object

{

public:

  /**

   * Register this type.

   * \return The TypeId.

   */

  static TypeId GetTypeId (void)

  {

    static TypeId tid = TypeId ("MyObject")

      .SetParent<Object> ()

      .SetGroupName ("Tutorial")

      .AddConstructor<MyObject> ()

      .AddTraceSource ("MyInteger",

                       "An integer value to trace.",

                       MakeTraceSourceAccessor (&MyObject::m_myInt),

                       "ns3::TracedValueCallback::Int32")

    ;

    return tid;

  }

  MyObject () {}

  TracedValue<int32_t> m_myInt;

};

void

IntTrace (int32_t oldValue, int32_t newValue)

{

  std::cout << "Traced " << oldValue << " to " << newValue << std::endl;

}

int

main (int argc, char *argv[])

{

  Ptr<MyObject> myObject = CreateObject<MyObject> ();

  myObject->TraceConnectWithoutContext ("MyInteger", MakeCallback (&IntTrace));

  myObject->m_myInt = 1234;

}