DataSourceController.h

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/* -*- mode: c++ -*- */

#ifndef _DataSourceController_H_
#define _DataSourceController_H_

#include "pattern/Observer.h"

#ifdef _MSC_VER
#include <msdevstudio/MSconfig.h>
#pragma warning(disable:4290) // advice from MSDN article and others
                              // VC++ is not following the standard
#endif

#include <stdexcept>
#include <vector>

namespace hippodraw {

class DataSource;
class Observable;

class MDL_HIPPOPLOT_API DataSourceController : private hippodraw::Observer
{

private:

  static DataSourceController * s_instance;

  DataSourceController();

  DataSourceController ( const DataSourceController & );

  typedef std::vector < DataSource * > DataSourceList_t;

  DataSourceList_t m_sources;

  DataSourceList_t m_ds_files;

  mutable std:: vector < std::string > m_names;

  std::string m_base_name;

  int m_suffix;

  int m_current_index;

public:

  static DataSourceController * instance ();

  virtual void update ( const Observable * );

  void willDelete ( const Observable * observee );

  int indexOfDataSource ( const std::string & name ) const;

  DataSource * findDataSource ( const std::string & name ) 
    const throw ( std::runtime_error );

  DataSource * getDataSource ( const std::string & name ) const;

  void changeName ( const std::string & old_name, 
                    const std::string & new_name );


  void getDataSources ( std::vector < DataSource * > &,
                        bool all = true ) const;

  const std::vector < std::string > & getNTupleNames () const;

  void registerDataSourceFile ( DataSource * ds );

  std::string registerNTuple ( DataSource * nt );

  void registerNTuple ( const std::string &, DataSource * source );

  void unregisterNTuple ( const DataSource * nt );

  bool isFromFile ( const DataSource * source ) const;

  DataSource * getCurrent () const;

  void setCurrentIndex ( int index );

};

} // namespace hippodraw

#endif // _DataSourceController_H_