ShapeIdGenerator.h

#pragma once

#include "EegeoShapes.h"
#include "Types.h"
#include "IShapeModel.h"

namespace Eegeo
{
    namespace Shapes
    {
        template <typename TId>
        class TIdGeneratorBase
        {
        public:
            typedef TId IdType;
            
            virtual ~TIdGeneratorBase() {}
            virtual IdType GetNext() = 0;
        };
        
        
        template <typename TBase>
        class TIdGenerator : public TBase, private Eegeo::NonCopyable
        {
        public:
            TIdGenerator()
            : m_nextId(1)
            {}
            
            
            typename TBase::IdType GetNext()
            {
                return m_nextId++;
            }
        private:
            int m_nextId;
        };
        
        
        class IShapeIdGenerator : public TIdGeneratorBase<IShapeModel::IdType>
        {
            
        };
        
        
        class ShapeIdGenerator : public TIdGenerator<IShapeIdGenerator>
        {
            
        };
    }
}