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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QQMLPROXYMETAOBJECT_P_H
#define QQMLPROXYMETAOBJECT_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qtqmlglobal_p.h>
#include <private/qmetaobjectbuilder_p.h>
#include <QtCore/QMetaObject>
#include <QtCore/QObject>
#include <private/qobject_p.h>
QT_BEGIN_NAMESPACE
class Q_QML_EXPORT QQmlProxyMetaObject : public QDynamicMetaObjectData
{
public:
struct ProxyData {
typedef QObject *(*CreateFunc)(QObject *);
QMetaObject *metaObject;
CreateFunc createFunc;
int propertyOffset;
int methodOffset;
};
QQmlProxyMetaObject(QObject *, const QList<ProxyData> *);
~QQmlProxyMetaObject();
static constexpr int extensionObjectId(int id) noexcept
{
Q_ASSERT(id >= 0);
Q_ASSERT(id <= MaxExtensionCount); // MaxExtensionCount is a valid index
return ExtensionObjectId | id;
}
protected:
int metaCall(QObject *o, QMetaObject::Call _c, int _id, void **_a) override;
QMetaObject *toDynamicMetaObject(QObject *) override;
void objectDestroyed(QObject *object) override;
private:
QObject *getProxy(int index);
const QList<ProxyData> *metaObjects;
QObject **proxies;
QDynamicMetaObjectData *parent;
QMetaObject *metaObject;
QObject *object;
// ExtensionObjectId acts as a flag for whether we should interpret a
// QMetaObject::CustomCall as a call to fetch the extension object (see
// QQmlProxyMetaObject::metaCall()). MaxExtensionCount is a limit on how
// many extensions we can query via such mechanism
enum : int {
MaxExtensionCount = 127, // magic number so that low bits are all '1'
ExtensionObjectId = ~MaxExtensionCount,
};
};
QT_END_NAMESPACE
#endif // QQMLPROXYMETAOBJECT_P_H
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