FactoryHolder.h

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/*
* This file is part of Project SkyFire https://www.projectskyfire.org.
* See LICENSE.md file for Copyright information
*/
 
#ifndef SKYFIRE_FACTORY_HOLDER
#define SKYFIRE_FACTORY_HOLDER
 
#include "Define.h"
#include "Dynamic/TypeList.h"
#include "ObjectRegistry.h"
#include "Platform/Singleton.h"

template<class T, class Key = std::string>
class FactoryHolder
{
public:
    typedef ObjectRegistry<FactoryHolder<T, Key >, Key > FactoryHolderRegistry;
    friend class Skyfire::Singleton<FactoryHolderRegistry, Skyfire::NullMutex>;
    typedef Skyfire::Singleton<FactoryHolderRegistry, Skyfire::NullMutex> FactoryHolderRepository;
 
    FactoryHolder(Key k) : i_key(k) { }
    virtual ~FactoryHolder() { }
    inline Key key() const { return i_key; }
 
    void RegisterSelf(void) { FactoryHolderRepository::instance()->InsertItem(this, i_key); }
    void DeregisterSelf(void) { FactoryHolderRepository::instance()->RemoveItem(this, false); }

    virtual T* Create(void* data = NULL) const = 0;
private:
    Key i_key;
};

template<class T>
class Permissible
{
public:
    virtual ~Permissible() { }
    virtual int Permit(const T*) const = 0;
};
#endif