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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2008 INRIA
 * Copyright (c) 2010 Network Security Lab, University of Washington, Seattle.
 *
 * 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
 *
 * Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
 *          Sidharth Nabar <snabar@uw.edu>, He Wu <mdzz@u.washington.edu>
 */

#ifndef ENERGY_SOURCE_CONTAINER_H
#define ENERGY_SOURCE_CONTAINER_H

#include "ns3/energy-source.h"
#include "ns3/object.h"
#include <vector>
#include <stdint.h>

namespace ns3 {

/**
 * \ingroup energy
 * \brief Holds a vector of ns3::EnergySource pointers.
 *
 * EnergySourceHelper returns a list of EnergySource pointers installed onto a
 * node. Users can use this list to access EnergySource objects to obtain total
 * energy consumption on a node easily.
 *
 * \see NetDeviceContainer
 *
 */
class EnergySourceContainer : public Object
{
public:
  typedef std::vector< Ptr<EnergySource> >::const_iterator Iterator;

public:
  static TypeId GetTypeId (void);
  /**
   * Creates an empty EnergySourceContainer.
   */
  EnergySourceContainer ();
  ~EnergySourceContainer ();

  /**
   * \param source Pointer to an EnergySource.
   *
   * Creates an EnergySourceContianer with exactly one EnergySource previously
   * instantiated.
   */
  EnergySourceContainer (Ptr<EnergySource> source);

  /**
   * \param sourceName Name of EnergySource.
   *
   * Creates an EnergySourceContainer with exactly one EnergySource previously
   * instantiated and assigned a name using the Object name service. This
   * EnergySource is specified by its assigned name.
   */
  EnergySourceContainer (std::string sourceName);

  /**
   * \param a A EnergySourceContainer.
   * \param b Another EnergySourceContainer.
   *
   * Creates an EnergySourceContainer by concatenating EnergySourceContainer b
   * to EnergySourceContainer a.
   *
   * \note Can be used to concatenate 2 Ptr<EnergySource> directly. C++ will be
   * calling EnergySourceContainer constructor with Ptr<EnergySource> first.
   */
  EnergySourceContainer (const EnergySourceContainer &a,
                         const EnergySourceContainer &b);

  /**
   * \brief Get an iterator which refers to the first EnergySource pointer in
   * the container.
   *
   * \returns An iterator which refers to the first EnergySource in container.
   *
   * EnergySources can be retrieved from the container in two ways. First,
   * directly by an index into the container, and second, using an iterator.
   * This method is used in the iterator method and is typically used in a
   * for-loop to run through the EnergySources.
   *
   * \code
   *   EnergySourceContainer::Iterator i;
   *   for (i = container.Begin (); i != container.End (); ++i)
   *     {
   *       (*i)->method ();  // some EnergySource method
   *     }
   * \endcode
   */
  Iterator Begin (void) const;

  /**
   * \brief Get an iterator which refers to the last EnergySource pointer in
   * the container.
   *
   * \returns An iterator which refers to the last EnergySource in container.
   *
   * EnergySources can be retrieved from the container in two ways. First,
   * directly by an index into the container, and second, using an iterator.
   * This method is used in the iterator method and is typically used in a
   * for-loop to run through the EnergySources.
   *
   * \code
   *   EnergySourceContainer::Iterator i;
   *   for (i = container.Begin (); i != container.End (); ++i)
   *     {
   *       (*i)->method ();  // some EnergySource method
   *     }
   * \endcode
   */
  Iterator End (void) const;

  /**
   * \brief Get the number of Ptr<EnergySource> stored in this container.
   *
   * \returns The number of Ptr<EnergySource> stored in this container.
   */
  uint32_t GetN (void) const;

  /**
   * \brief Get the i-th Ptr<EnergySource> stored in this container.
   *
   * \param i Index of the requested Ptr<EnergySource>.
   * \returns The requested Ptr<EnergySource>.
   */
  Ptr<EnergySource> Get (uint32_t i) const;

  /**
   * \param container Another EnergySourceContainer to append.
   *
   * Appends the contents of another EnergySourceContainer to the end of this
   * EnergySourceContainer.
   */
  void Add (EnergySourceContainer container);

  /**
   * \brief Append a single Ptr<EnergySource> to the end of this container.
   *
   * \param source Pointer to an EnergySource.
   */
  void Add (Ptr<EnergySource> source);

  /**
   * \brief Append a single Ptr<EnergySource> referred to by its object name to
   * the end of this container.
   *
   * \param sourceName Name of EnergySource object.
   */
  void Add (std::string sourceName);

private:
  virtual void DoDispose (void);

  /**
   * \brief Calls Object::Start () for all EnergySource objects.
   */
  virtual void DoInitialize (void);

private:
  std::vector< Ptr<EnergySource> > m_sources;

};

} // namespace ns3

#endif /* ENERGY_SOURCE_CONTAINER_H */