/**
 * @file Common/registry.h
 * @brief Common registry implementation
 * @author Enar Vaikene
 *
 * Copyright (c) 2011-2019 Enar Vaikene
 *
 * This file is part of the eVaf C++ cross-platform application development framework.
 *
 * This file can be used under the terms of the GNU General Public License
 * version 3.0 as published by the Free Software Foundation and appearing in
 * the file LICENSE included in the packaging of this file. Please review the
 * the following information to ensure the GNU General Public License version
 * 3.0 requirements will be met: http://www.gnu.org/copyleft/gpl.html.
 *
 * Alternatively, this file may be used in accordance with the Commercial License
 * Agreement provided with the Software.
 */

#ifndef __COMMON_REGISTRY_H
#define __COMMON_REGISTRY_H

#include "iregistry.h"

#include <QObject>
#include <QString>
#include <QHash>

namespace eVaf {
namespace Common {
namespace Internal {

/**
 * iRegistry interface implementation.
 *
 * This class implements the global registry for interfaces. Interfaces are stored in a QHash container
 * and quarded with QWeakPointer.
 */
class Registry : public iRegistry
{
    Q_OBJECT

public:

    Registry();

    virtual ~Registry();

    /*
        iRegistry interface
    */

    virtual bool registerInterface(QString const & name, QObject * obj);

    virtual QObject * queryInterface(QString const & name) const;


private:

    /// All the registered interfaces
    typedef QHash<QString, QObject *> Interfaces;
    Interfaces mInterfaces;


private slots:

    /// Interface object destroyed
    /// We need to remove the interface from the list of registered interfaces
    void interfaceDestroyed(QObject * obj = nullptr);

};

} // namespace eVaf::Common::Internal
} // namespace eVaf::Common
} // namespace eVaf

#endif // registry.h