qservicelocator_p.h

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// Copyright (C) 2019 Klaralvdalens Datakonsult AB (KDAB).

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#ifndef QT3DCORE_QSERVICELOCATOR_H

#define QT3DCORE_QSERVICELOCATOR_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of other Qt classes.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <Qt3DCore/qt3dcore_global.h>

#include <QtCore/qobject.h>

#include <QtCore/qscopedpointer.h>

#include <private/qglobal_p.h>

QT_BEGIN_NAMESPACE

namespace Qt3DCore {

class QAbstractServiceProviderPrivate;

class Q_3DCORESHARED_EXPORT QAbstractServiceProvider : public QObject

    Q_OBJECT

public:

    virtual ~QAbstractServiceProvider();

    int type() const;

    QString description() const;

protected:

    explicit QAbstractServiceProvider(int type, const QString &description, QObject* parent = nullptr);

    explicit QAbstractServiceProvider(QAbstractServiceProviderPrivate &dd, QObject* parent = nullptr);

private:

    Q_DISABLE_COPY(QAbstractServiceProvider)

    Q_DECLARE_PRIVATE(QAbstractServiceProvider)

};

class QAbstractFrameAdvanceService;

class QOpenGLInformationService;

class QSystemInformationService;

class QServiceLocatorPrivate;

class QEventFilterService;

class QDownloadHelperService;

class QAspectEngine;

class Q_3DCORESHARED_EXPORT QServiceLocator

public:

    QServiceLocator(QAspectEngine *aspectEngine = nullptr);

    ~QServiceLocator();

    enum ServiceType {

        SystemInformation,

        OpenGLInformation,

        CollisionService,

        FrameAdvanceService,

        EventFilterService,

        DownloadHelperService,

#if !defined(Q_QDOC)

        DefaultServiceCount, // Add additional default services before here

#endif

        UserService = 256

};

    void registerServiceProvider(int serviceType, QAbstractServiceProvider *provider);

    void unregisterServiceProvider(int serviceType);

    int serviceCount() const;

    template<class T>

    T *service(int serviceType)

        QAbstractServiceProvider *service_ = _q_getServiceHelper(serviceType);

        return static_cast<T *>(service_);

    // Convenience accessors for Qt3D provided services

    QSystemInformationService *systemInformation();

    QOpenGLInformationService *openGLInformation();

    QAbstractFrameAdvanceService *frameAdvanceService();

    QEventFilterService *eventFilterService();

    QDownloadHelperService *downloadHelperService();

private:

    Q_DISABLE_COPY(QServiceLocator)

    Q_DECLARE_PRIVATE(QServiceLocator)

    QScopedPointer<QServiceLocatorPrivate> d_ptr;

    QAbstractServiceProvider *_q_getServiceHelper(int type);

};

QT_END_NAMESPACE

#endif // QT3DCORE_QSERVICELOCATOR_H