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/*
objectinstance.h
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2015 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#ifndef GAMMARAY_OBJECTINSTANCE_H
#define GAMMARAY_OBJECTINSTANCE_H
#include "gammaray_core_export.h"
#include <QByteArray>
#include <QPointer>
#include <QVariant>
QT_BEGIN_NAMESPACE
class QObject;
struct QMetaObject;
QT_END_NAMESPACE
namespace GammaRay {
/** Represents some form of object the property adaptor/model code can handle. */
class GAMMARAY_CORE_EXPORT ObjectInstance
{
public:
enum Type
{
Invalid,
QtObject,
QtMetaObject,
QtGadgetPointer, ///< a pointer to a gadget
QtVariant,
Object,
Value,
QtGadgetValue ///< a gadget value type stored in the QVariant
};
ObjectInstance() = default;
ObjectInstance(QObject *obj); // krazy:exclude=explicit
/// use this for Q_GADGETs
ObjectInstance(void *obj, const QMetaObject *metaObj);
/// use for things that only exist as GammaRay meta objects
ObjectInstance(void *obj, const char *typeName);
ObjectInstance(const QVariant &value); // krazy:exclude=explicit
ObjectInstance(const ObjectInstance &other);
ObjectInstance &operator=(const ObjectInstance &other);
bool operator==(const ObjectInstance &rhs) const;
Type type() const;
/**!
* Returns @c true if this instance holds a value type.
* This is important to treat differently when writing to it, as this will be a copy
* of the value you want to change.
*/
bool isValueType() const;
/// only valid for QtObject
QObject *qtObject() const;
/// only valid for QtObject, QtGadget and Object
void *object() const;
/// only valid for QtVariant
const QVariant &variant() const;
/// only valid for QtObject and QtGadget
const QMetaObject *metaObject() const;
/// only valid for [Qt]Object and QtGadget
QByteArray typeName() const;
/// Returns @c false if this instance is known to be invalid.
bool isValid() const;
private:
void copy(const ObjectInstance &other);
void unpackVariant();
void *m_obj = nullptr;
QPointer<QObject> m_qtObj;
QVariant m_variant;
const QMetaObject *m_metaObj = nullptr;
QByteArray m_typeName;
Type m_type = Invalid;
};
}
#endif // GAMMARAY_OBJECTINSTANCE_H
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