GWorldData.h

/***************************************************************************
 *   Copyright (C) 2005 by Raphael Langerhorst                             *
 *   raphael-langerhorst@gmx.at                                            *
 *                                                                         *
 *   Permission is hereby granted, free of charge, to any person obtaining *
 *   a copy of this software and associated documentation files (the       *
 *   "Software"), to deal in the Software without restriction, including   *
 *   without limitation the rights to use, copy, modify, merge, publish,   *
 *   distribute, sublicense, and/or sell copies of the Software, and to    *
 *   permit persons to whom the Software is furnished to do so, subject to *
 *   the following conditions:                                             *
 *                                                                         *
 *   The above copyright notice and this permission notice shall be        *
 *   included in all copies or substantial portions of the Software.       *
 *                                                                         *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       *
 *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    *
 *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*
 *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR     *
 *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
 *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
 *   OTHER DEALINGS IN THE SOFTWARE.                                       *
 ***************************************************************************/

#ifndef GCSGWORLDDATA_H
#define GCSGWORLDDATA_H

#include "GElementID.h"

#include <QList>

namespace GCS
{

class GElement;

class GWorldData
{
  protected:
  
    GWorldData()
    {}

  public:
  
    virtual ~GWorldData()
    {}
    
    virtual const GElement* read(const GElementID& id) const = 0;
    
//     /**
//      * Starts at a random element and goes up the hierarchy until it reaches
//      * the top most (root) element. The root element of the world is identified
//      * with this test:  (element id == parent id || parent id == 0)
//      * @note If there is more than one element without a parent the result is
//      *       unpredictable.
//      * @return the top most element in the hierarchy
//      */
//     virtual const GElement* getRootElement() const = 0;
    
    virtual QList<GCS::GElementID> getChildren(const GCS::GElementID& parent) const = 0;

};

}

#endif

---