/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may 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.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
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** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QQML_H
#define QQML_H

#include <QtQml/qqmlprivate.h>
#include <QtQml/qqmlparserstatus.h>
#include <QtQml/qqmlpropertyvaluesource.h>
#include <QtQml/qqmllist.h>

#include <QtCore/qbytearray.h>
#include <QtCore/qmetaobject.h>

#define QML_VERSION     0x020000
#define QML_VERSION_STR "2.0"

#define QML_DECLARE_TYPE(TYPE) \
    Q_DECLARE_METATYPE(TYPE *) \
    Q_DECLARE_METATYPE(QQmlListProperty<TYPE>) 

#define QML_DECLARE_TYPE_HASMETATYPE(TYPE) \
    Q_DECLARE_METATYPE(QQmlListProperty<TYPE>) 

#define QML_DECLARE_INTERFACE(INTERFACE) \
    QML_DECLARE_TYPE(INTERFACE)

#define QML_DECLARE_INTERFACE_HASMETATYPE(INTERFACE) \
    QML_DECLARE_TYPE_HASMETATYPE(INTERFACE)

enum { /* TYPEINFO flags */
    QML_HAS_ATTACHED_PROPERTIES = 0x01
};

#define QML_DECLARE_TYPEINFO(TYPE, FLAGS) \
QT_BEGIN_NAMESPACE \
template <> \
class QQmlTypeInfo<TYPE > \
{ \
public: \
    enum { \
        hasAttachedProperties = (((FLAGS) & QML_HAS_ATTACHED_PROPERTIES) == QML_HAS_ATTACHED_PROPERTIES) \
    }; \
}; \
QT_END_NAMESPACE

QT_BEGIN_NAMESPACE


class QQmlPropertyValueInterceptor;

#define QML_GETTYPENAMES \
    const char *className = T::staticMetaObject.className(); \
    const int nameLen = int(strlen(className)); \
    QVarLengthArray<char,48> pointerName(nameLen+2); \
    memcpy(pointerName.data(), className, nameLen); \
    pointerName[nameLen] = '*'; \
    pointerName[nameLen+1] = '\0'; \
    const int listLen = int(strlen("QQmlListProperty<")); \
    QVarLengthArray<char,64> listName(listLen + nameLen + 2); \
    memcpy(listName.data(), "QQmlListProperty<", listLen); \
    memcpy(listName.data()+listLen, className, nameLen); \
    listName[listLen+nameLen] = '>'; \
    listName[listLen+nameLen+1] = '\0';

void Q_QML_EXPORT qmlClearTypeRegistrations();

template<typename T>
int qmlRegisterType()
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterType type = {
        0, 

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        0, 0,
        QString(),

        0, 0, 0, 0, &T::staticMetaObject,

        QQmlPrivate::attachedPropertiesFunc<T>(),
        QQmlPrivate::attachedPropertiesMetaObject<T>(),

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(), 
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        0, 0,

        0,
        0
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}

int Q_QML_EXPORT qmlRegisterTypeNotAvailable(const char *uri, int versionMajor, int versionMinor, const char *qmlName, const QString& message);

template<typename T>
int qmlRegisterUncreatableType(const char *uri, int versionMajor, int versionMinor, const char *qmlName, const QString& reason)
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterType type = {
        0,

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        0, 0,
        reason,

        uri, versionMajor, versionMinor, qmlName, &T::staticMetaObject,

        QQmlPrivate::attachedPropertiesFunc<T>(),
        QQmlPrivate::attachedPropertiesMetaObject<T>(),

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        0, 0,

        0,
        0
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}

template<typename T, int metaObjectRevision>
int qmlRegisterUncreatableType(const char *uri, int versionMajor, int versionMinor, const char *qmlName, const QString& reason)
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterType type = {
        1,

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        0, 0,
        reason,

        uri, versionMajor, versionMinor, qmlName, &T::staticMetaObject,

        QQmlPrivate::attachedPropertiesFunc<T>(),
        QQmlPrivate::attachedPropertiesMetaObject<T>(),

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        0, 0,

        0,
        metaObjectRevision
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}

template<typename T>
int qmlRegisterType(const char *uri, int versionMajor, int versionMinor, const char *qmlName)
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterType type = {
        0, 

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        sizeof(T), QQmlPrivate::createInto<T>,
        QString(),

        uri, versionMajor, versionMinor, qmlName, &T::staticMetaObject,

        QQmlPrivate::attachedPropertiesFunc<T>(),
        QQmlPrivate::attachedPropertiesMetaObject<T>(),

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(), 
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        0, 0,

        0,
        0
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}

template<typename T, int metaObjectRevision>
int qmlRegisterType(const char *uri, int versionMajor, int versionMinor, const char *qmlName)
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterType type = {
        1,

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        sizeof(T), QQmlPrivate::createInto<T>,
        QString(),

        uri, versionMajor, versionMinor, qmlName, &T::staticMetaObject,

        QQmlPrivate::attachedPropertiesFunc<T>(),
        QQmlPrivate::attachedPropertiesMetaObject<T>(),

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        0, 0,

        0,
        metaObjectRevision
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}

template<typename T, int metaObjectRevision>
int qmlRegisterRevision(const char *uri, int versionMajor, int versionMinor)
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterType type = {
        1,

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        sizeof(T), QQmlPrivate::createInto<T>,
        QString(),

        uri, versionMajor, versionMinor, 0, &T::staticMetaObject,

        QQmlPrivate::attachedPropertiesFunc<T>(),
        QQmlPrivate::attachedPropertiesMetaObject<T>(),

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        0, 0,

        0,
        metaObjectRevision
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}


template<typename T, typename E>
int qmlRegisterExtendedType()
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterType type = {
        0, 

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        0, 0,
        QString(),

        0, 0, 0, 0, &T::staticMetaObject,

        QQmlPrivate::attachedPropertiesFunc<T>(),
        QQmlPrivate::attachedPropertiesMetaObject<T>(),

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(), 
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        QQmlPrivate::createParent<E>, &E::staticMetaObject,

        0,
        0
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}

template<typename T, typename E>
int qmlRegisterExtendedType(const char *uri, int versionMajor, int versionMinor, 
                            const char *qmlName)
{
    QML_GETTYPENAMES

    QQmlAttachedPropertiesFunc attached = QQmlPrivate::attachedPropertiesFunc<E>();
    const QMetaObject * attachedMetaObject = QQmlPrivate::attachedPropertiesMetaObject<E>(); 
    if (!attached) {
        attached = QQmlPrivate::attachedPropertiesFunc<T>();
        attachedMetaObject = QQmlPrivate::attachedPropertiesMetaObject<T>();
    }

    QQmlPrivate::RegisterType type = {
        0, 

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        sizeof(T), QQmlPrivate::createInto<T>,
        QString(),

        uri, versionMajor, versionMinor, qmlName, &T::staticMetaObject,

        attached,
        attachedMetaObject,

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(), 
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        QQmlPrivate::createParent<E>, &E::staticMetaObject,

        0,
        0
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}

template<typename T>
int qmlRegisterInterface(const char *typeName)
{
    QByteArray name(typeName);

    QByteArray pointerName(name + '*');
    QByteArray listName("QQmlListProperty<" + name + '>');

    QQmlPrivate::RegisterInterface qmlInterface = {
        0,

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),

        qobject_interface_iid<T *>()
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::InterfaceRegistration, &qmlInterface);
}

template<typename T>
int qmlRegisterCustomType(const char *uri, int versionMajor, int versionMinor, 
                          const char *qmlName, QQmlCustomParser *parser)
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterType type = {
        0, 

        qRegisterNormalizedMetaType<T *>(pointerName.constData()),
        qRegisterNormalizedMetaType<QQmlListProperty<T> >(listName.constData()),
        sizeof(T), QQmlPrivate::createInto<T>,
        QString(),

        uri, versionMajor, versionMinor, qmlName, &T::staticMetaObject,

        QQmlPrivate::attachedPropertiesFunc<T>(),
        QQmlPrivate::attachedPropertiesMetaObject<T>(),

        QQmlPrivate::StaticCastSelector<T,QQmlParserStatus>::cast(), 
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueSource>::cast(),
        QQmlPrivate::StaticCastSelector<T,QQmlPropertyValueInterceptor>::cast(),

        0, 0,

        parser,
        0
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::TypeRegistration, &type);
}

class QQmlContext;
class QQmlEngine;
class QJSValue;
class QJSEngine;

namespace QtQml {
    // declared in namespace to avoid symbol conflicts with QtDeclarative
    Q_QML_EXPORT void qmlExecuteDeferred(QObject *);
    Q_QML_EXPORT QQmlContext *qmlContext(const QObject *);
    Q_QML_EXPORT QQmlEngine *qmlEngine(const QObject *);
    Q_QML_EXPORT QObject *qmlAttachedPropertiesObjectById(int, const QObject *, bool create = true);
    Q_QML_EXPORT QObject *qmlAttachedPropertiesObject(int *, const QObject *,
                                                      const QMetaObject *, bool create);
}
using namespace QtQml;

template<typename T>
QObject *qmlAttachedPropertiesObject(const QObject *obj, bool create = true)
{
    static int idx = -1;
    return qmlAttachedPropertiesObject(&idx, obj, &T::staticMetaObject, create);
}

Q_QML_EXPORT void qmlRegisterBaseTypes(const char *uri, int versionMajor, int versionMinor);

inline int qmlRegisterSingletonType(const char *uri, int versionMajor, int versionMinor, const char *typeName,
                                QJSValue (*callback)(QQmlEngine *, QJSEngine *))
{
    QQmlPrivate::RegisterSingletonType api = {
        0,

        uri, versionMajor, versionMinor, typeName,

        callback, 0, 0, 0, 0
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::SingletonRegistration, &api);
}

static const int CurrentSingletonTypeRegistrationVersion = 2;
template <typename T>
inline int qmlRegisterSingletonType(const char *uri, int versionMajor, int versionMinor, const char *typeName,
                                QObject *(*callback)(QQmlEngine *, QJSEngine *))
{
    QML_GETTYPENAMES

    QQmlPrivate::RegisterSingletonType api = {
        CurrentSingletonTypeRegistrationVersion,

        uri, versionMajor, versionMinor, typeName,

        0, callback, &T::staticMetaObject, qRegisterNormalizedMetaType<T *>(pointerName.constData()), 0
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::SingletonRegistration, &api);
}


inline int qmlRegisterType(const QUrl &url, const char *uri, int versionMajor, int versionMinor, const char *qmlName)
{
    if (url.isRelative()) { 
        // User input check must go here, because QQmlPrivate::qmlregister is also used internally for composite types
        qWarning("qmlRegisterType requires absolute URLs.");
        return 0;
    }

    QQmlPrivate::RegisterCompositeType type = {
        url,
        uri,
        versionMajor,
        versionMinor,
        qmlName
    };

    return QQmlPrivate::qmlregister(QQmlPrivate::CompositeRegistration, &type);
}

QT_END_NAMESPACE

QML_DECLARE_TYPE(QObject)
Q_DECLARE_METATYPE(QVariant)

#endif // QQML_H
