/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtDeclarative module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

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** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QDECLARATIVEPRIVATE_H

#define QDECLARATIVEPRIVATE_H

#include <QtCore/qglobal.h>

#include <QtCore/qvariant.h>

#ifndef Q_OS_WIN

#include <stdint.h>

#endif

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

typedef QObject *(*QDeclarativeAttachedPropertiesFunc)(QObject *);

template <typename TYPE>

class QDeclarativeTypeInfo

{

public:

    enum {

        hasAttachedProperties = 0

    };

};

class QDeclarativeCustomParser;

namespace QDeclarativePrivate

{

    void Q_DECLARATIVE_EXPORT qdeclarativeelement_destructor(QObject *);

    template<typename T>

    class QDeclarativeElement : public T

    {

    public:

        virtual ~QDeclarativeElement() { 

            QDeclarativePrivate::qdeclarativeelement_destructor(this); 

        }

    };

    template<typename T>

    void createInto(void *memory) { new (memory) QDeclarativeElement<T>; }

    template<typename T>

    QObject *createParent(QObject *p) { return new T(p); }

    template<class From, class To, int N>

    struct StaticCastSelectorClass

    {

        static inline int cast() { return -1; }

    };

    template<class From, class To>

    struct StaticCastSelectorClass<From, To, sizeof(int)>

    {

        static inline int cast() { return (int)((intptr_t)static_cast<To *>((From *)0x10000000)) - 0x10000000; }

    };

    template<class From, class To>

    struct StaticCastSelector

    {

        typedef int yes_type;

        typedef char no_type;

        static yes_type check(To *);

        static no_type check(...);

        static inline int cast()

        {

            return StaticCastSelectorClass<From, To, sizeof(check((From *)0))>::cast();

        }

    };

    template <typename T>

    struct has_attachedPropertiesMember

    {

        static bool const value = QDeclarativeTypeInfo<T>::hasAttachedProperties;

    };

    template <typename T, bool hasMember>

    class has_attachedPropertiesMethod 

    {

        typedef int yes_type;

        typedef char no_type;

        template<typename ReturnType>

        static yes_type check(ReturnType *(*)(QObject *));

        static no_type check(...);

    public:

        static bool const value = sizeof(check(&T::qmlAttachedProperties)) == sizeof(yes_type);

    }; 

    template <typename T>

    class has_attachedPropertiesMethod<T, false>

    {

    public:

        static bool const value = false;

    };

    template<typename T, int N>

    class AttachedPropertySelector

    {

    public:

        static inline QDeclarativeAttachedPropertiesFunc func() { return 0; }

        static inline const QMetaObject *metaObject() { return 0; }

    };

    template<typename T>

    class AttachedPropertySelector<T, 1>

    {

        static inline QObject *attachedProperties(QObject *obj) {

            return T::qmlAttachedProperties(obj);

        }

        template<typename ReturnType>

        static inline const QMetaObject *attachedPropertiesMetaObject(ReturnType *(*)(QObject *)) {

            return &ReturnType::staticMetaObject;

        }

    public:

        static inline QDeclarativeAttachedPropertiesFunc func() {

            return &attachedProperties;

        }

        static inline const QMetaObject *metaObject() {

            return attachedPropertiesMetaObject(&T::qmlAttachedProperties);

        }

    };

    template<typename T>

    inline QDeclarativeAttachedPropertiesFunc attachedPropertiesFunc()

    {

        return AttachedPropertySelector<T, has_attachedPropertiesMethod<T, has_attachedPropertiesMember<T>::value>::value>::func();

    }

    template<typename T>

    inline const QMetaObject *attachedPropertiesMetaObject()

    {

        return AttachedPropertySelector<T, has_attachedPropertiesMethod<T, has_attachedPropertiesMember<T>::value>::value>::metaObject();

    }

    struct RegisterType {

        int version;

        int typeId;

        int listId;

        int objectSize;

        void (*create)(void *);

        QString noCreationReason;

        const char *uri;

        int versionMajor;

        int versionMinor;

        const char *elementName;

        const QMetaObject *metaObject;

        QDeclarativeAttachedPropertiesFunc attachedPropertiesFunction;

        const QMetaObject *attachedPropertiesMetaObject;

        int parserStatusCast;

        int valueSourceCast;

        int valueInterceptorCast;

        QObject *(*extensionObjectCreate)(QObject *);

        const QMetaObject *extensionMetaObject;

        QDeclarativeCustomParser *customParser;

    };

    struct RegisterInterface {

        int version;

        int typeId;

        int listId;

        const char *iid;

    };

    int Q_DECLARATIVE_EXPORT registerType(const RegisterType &);

    int Q_DECLARATIVE_EXPORT registerType(const RegisterInterface &);

}

QT_END_NAMESPACE

QT_END_HEADER

#endif // QDECLARATIVEPRIVATE_H