aimsGraphW.h

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/* This software and supporting documentation are distributed by
 *     Institut Federatif de Recherche 49
 *     CEA/NeuroSpin, Batiment 145,
 *     91191 Gif-sur-Yvette cedex
 *     France
 *
 * This software is governed by the CeCILL-B license under
 * French law and abiding by the rules of distribution of free software.
 * You can  use, modify and/or redistribute the software under the
 * terms of the CeCILL-B license as circulated by CEA, CNRS
 * and INRIA at the following URL "http://www.cecill.info".
 *
 * As a counterpart to the access to the source code and  rights to copy,
 * modify and redistribute granted by the license, users are provided only
 * with a limited warranty  and the software's author,  the holder of the
 * economic rights,  and the successive licensors  have only  limited
 * liability.
 *
 * In this respect, the user's attention is drawn to the risks associated
 * with loading,  using,  modifying and/or developing or reproducing the
 * software by the user in light of its specific status of free software,
 * that may mean  that it is complicated to manipulate,  and  that  also
 * therefore means  that it is reserved for developers  and  experienced
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 * same conditions as regards security.
 *
 * The fact that you are presently reading this means that you have had
 * knowledge of the CeCILL-B license and that you accept its terms.
 */
 
/*
 *  Region Of Interest
 */
#ifndef AIMS_IO_AIMSGRAPHW_H
#define AIMS_IO_AIMSGRAPHW_H
 
#include <aims/io/process.h>
#include <cartobase/object/attributed.h>
 
class Graph;
 
namespace aims
{
  struct AimsGraphWriter_Private;
 
  namespace internal
  {
    struct AimsGraphWriter_ElemStruct;
  }
 
 
  class AimsGraphWriter : public Process
  {
  public:
    enum SavingMode
    {
      Keep, 
      Global, 
      Local
    };
 
    struct Wrapper
    {
      friend class AimsGraphWriter;
 
      virtual ~Wrapper() {}
      virtual void destroy() {}
 
      virtual std::string objectType() const = 0;
      virtual std::string dataType() const = 0;
 
    private:
      virtual int freeindex() const = 0;
      virtual bool write( const AimsGraphWriter & ) const = 0;
    };
 
    template<typename T> struct ObjectWrapper : public Wrapper
    {
      friend class AimsGraphWriter;
 
      ObjectWrapper( T* x ) : data( x ) {}
      virtual ~ObjectWrapper() {}
      virtual void destroy() { delete data; }
 
      virtual std::string objectType() const;
      virtual std::string dataType() const;
 
      T *data;
 
    private:
      virtual int freeindex() const;
      virtual bool write( const AimsGraphWriter & ) const;
    };
 
    struct ElementInfo
    {
      Graph                        *graph;
      carto::AttributedObject    *element;
      std::string               attribute;
      Wrapper                    *object;
    };
 
    template<typename T> friend struct ObjectWrapper;
 
    AimsGraphWriter( const std::string & filename );
    virtual ~AimsGraphWriter();

    virtual void writeElements( Graph & g, SavingMode newmode = Keep, 
                                SavingMode oldmode = Keep,
                                bool saveOnlyModified = false );
 
    template<class T> 
    static bool defaultTakeObject( Process &, const std::string &, Finder & );
    template <typename T> static bool isEmpty( const T & obj );
 
    const ElementInfo & elementInfo() const { return( info ); }
    ElementInfo & elementInfo() { return( info ); }
 
  private:
    template<class T> bool write( const T & ) const;
    void writeElement( carto::AttributedObject *ao, 
                       internal::AimsGraphWriter_ElemStruct & es );
 
    mutable ElementInfo                 info;
    mutable AimsGraphWriter_Private      *d;
  };
 
}
 
 
#endif