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/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2008-2013 Pelican Mapping
* http://osgearth.org
*
* osgEarth 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 2 of the License, or
* (at your option) any later version.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>
*/

#ifndef OSGEARTHUTIL_TILEINDEX_H
#define OSGEARTHUTIL_TILEINDEX_H 1

#include <osgEarthUtil/Common>
#include <osg/Referenced>
#include <osg/ref_ptr>
#include <osgEarthFeatures/FeatureSource>

#include <string>
#include <vector>

namespace osgEarth { namespace Util
{    
    /**
     * Manages a FeatureSource that is an index of geospatial data files     
     */
    class OSGEARTHUTIL_EXPORT TileIndex : public osg::Referenced
    {
    public:        

        static TileIndex* load( const std::string& filename );
        static TileIndex* create( const std::string& filename, const osgEarth::SpatialReference* srs);        

        /**
         * Gets files within the given extent.
         */
        void getFiles(const osgEarth::GeoExtent& extent, std::vector< std::string >& files);

        /**
         * Adds the given filename to the index
         */
        bool add( const std::string& filename, const GeoExtent& extent );
        
        /**
         * Gets the filename of the shapefile used for this index.
         */
        const std::string& getFilename() const { return _filename;}

    protected:
        TileIndex();        
        ~TileIndex();

        osg::ref_ptr< osgEarth::Features::FeatureSource > _features;
        std::string _filename;
    };

} } // namespace osgEarth::Util

#endif //OSGEARTHUTIL_TILEINDEX_H