CubeManager.h

#ifndef CubeManager_h
#define CubeManager_h

#include "IException.h"

#include <QMap>
#include <QQueue>
#include <QString>
#include <memory>

#include <iostream>

using namespace std;

/*
 *   Unless noted otherwise, the portions of Isis written by the
 *   USGS are public domain. See individual third-party library
 *   and package descriptions for intellectual property
 *   information,user agreements, and related information.
 *
 *   Although Isis has been used by the USGS, no warranty, expressed or implied,
 *   is made by the USGS as to the accuracy and functioning of such software
 *   and related material nor shall the fact of distribution constitute any such
 *   warranty, and no responsibility is assumed by the USGS in connection
 *   therewith.
 *
 *   For additional information, launch
 *   $ISISROOT/doc//documents/Disclaimers/Disclaimers.html in a browser or see
 *   the Privacy &amp; Disclaimers page on the Isis website,
 *   http://isis.astrogeology.usgs.gov, and the USGS privacy and disclaimers on
 *   http://www.usgs.gov/privacy.html.
 */
namespace Isis {
  class Cube;

  class CubeManager  {
    public:
      CubeManager();
      ~CubeManager();

      static Cube *Open(const QString &cubeFileName) {
        if (!p_instance) {
          p_instance = new CubeManager();
        }

        return p_instance->OpenCube(cubeFileName);
      }

      void SetNumOpenCubes(unsigned int numCubes) {

        // check to see if numCubes exceeds the number of open files limitations
        if (numCubes > p_maxOpenFiles) {
          p_currentLimit = p_maxOpenFiles;
        }
        p_currentLimit = numCubes;
      }


      static void CleanUp(const QString &cubeFileName) {
        p_instance->CleanCubes(cubeFileName);
      }


      static void CleanUp() {
        delete p_instance;
        p_instance = 0;
      };

      void CleanCubes(const QString &cubeFileName);
      void CleanCubes();
      Cube *OpenCube(const QString &cubeFileName);

    protected:

      static CubeManager *p_instance;

      QMap<QString, Cube *> p_cubes;

      QQueue<QString> p_opened;

      unsigned int p_currentLimit;

      unsigned int p_maxOpenFiles;
  };
}

#endif