Layer.h

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/*  Copyright (C) 2011-2011 National Institute For Space Research (INPE) - Brazil.

    This file is part of the TerraLib - a Framework for building GIS enabled applications.

    TerraLib is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License,
    or (at your option) any later version.

    TerraLib 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with TerraLib. See COPYING. If not, write to
    TerraLib Team at <terralib-team@terralib.org>.
 */

/*!
  \file Layer.h
   
  \brief Auxiliary classes and functions to read layer information from a XML document.
*/

#ifndef __TERRALIB_SERIALIZATION_MAPTOOLS_INTERNAL_LAYER_H
#define __TERRALIB_SERIALIZATION_MAPTOOLS_INTERNAL_LAYER_H

// TerraLib
#include "../../common/Singleton.h"
#include "../Config.h"

// STL
#include <map>
#include <string>

// Boost
#include <boost/function.hpp>

namespace te
{
  namespace map { class AbstractLayer; }

  namespace xml
  {
    class Reader;
    class Writer;
  }

  namespace serialize
  {
    class TESERIALIZATIONEXPORT Layer : public te::common::Singleton<Layer>
    {
      friend class te::common::Singleton<Layer>;

      public:

        typedef boost::function<te::map::AbstractLayer* (te::xml::Reader&)> LayerReadFnctType;
        typedef boost::function<void (const te::map::AbstractLayer*, te::xml::Writer&)> LayerWriteFnctType;
        typedef std::pair<LayerReadFnctType, LayerWriteFnctType> LayerFnctSerializeType;
        typedef std::map<std::string, LayerFnctSerializeType> LayerFnctIdxType;

        void reg(const std::string& layerType, const LayerFnctSerializeType& fncts);

        te::map::AbstractLayer* read(te::xml::Reader& reader) const;

        void write(const te::map::AbstractLayer* alayer, te::xml::Writer& writer) const;

        ~Layer();

      protected:

        Layer();

      private:

        LayerFnctIdxType m_fncts;
    };

  } // end namespace serialize
}   // end namespace te

#endif  // __TERRALIB_SERIALIZATION_MAPTOOLS_INTERNAL_LAYER_H