/*
 * Copyright (C) 2020 BfaCore
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU 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 General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _GRIDREFERENCE_H
#define _GRIDREFERENCE_H

#include "LinkedReference/Reference.h"

template<class OBJECT>
class GridRefManager;

template<class OBJECT>
class GridReference : public Reference<GridRefManager<OBJECT>, OBJECT>
{
    protected:
        void targetObjectBuildLink() override
        {
            // called from link()
            this->getTarget()->insertFirst(this);
            this->getTarget()->incSize();
        }
        void targetObjectDestroyLink() override
        {
            // called from unlink()
            if (this->isValid()) this->getTarget()->decSize();
        }
        void sourceObjectDestroyLink() override
        {
            // called from invalidate()
            this->getTarget()->decSize();
        }
    public:
        GridReference() : Reference<GridRefManager<OBJECT>, OBJECT>() { }
        ~GridReference() { this->unlink(); }
        GridReference* next() { return (GridReference*)Reference<GridRefManager<OBJECT>, OBJECT>::next(); }
};
#endif
