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// Copyright (C) 2019 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
// Qt-Security score:significant reason:trivial-impl-only
#ifndef QWINREGISTRY_H
#define QWINREGISTRY_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 <QtCore/qstring.h>
#include <QtCore/qstringview.h>
#include <QtCore/qt_windows.h>
#include <QtCore/qvariant.h>
#include <QtCore/qobject.h>
#include <QtCore/private/quniquehandle_types_p.h>
QT_BEGIN_NAMESPACE
class Q_CORE_EXPORT QWinRegistryKey
{
public:
QWinRegistryKey() = default;
explicit QWinRegistryKey(HKEY parentHandle, const wchar_t *subKey,
REGSAM permissions = KEY_READ, REGSAM access = 0);
explicit QWinRegistryKey(HKEY parentHandle, const QString &subKey,
REGSAM permissions = KEY_READ, REGSAM access = 0);
~QWinRegistryKey();
QWinRegistryKey(QWinRegistryKey &&other) noexcept
: m_key(std::exchange(other.m_key, nullptr)) {}
QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_MOVE_AND_SWAP(QWinRegistryKey)
void swap(QWinRegistryKey &other) noexcept
{
qt_ptr_swap(m_key, other.m_key);
}
[[nodiscard]] bool isValid() const { return m_key != nullptr; }
[[nodiscard]] HKEY handle() const { return m_key; }
operator HKEY() const { return handle(); }
void close();
QString name() const;
[[nodiscard]] QVariant value(const wchar_t *subKey) const;
[[nodiscard]] QVariant value(const QString &subKey) const;
template<typename T>
[[nodiscard]] std::optional<T> value(const wchar_t *subKey) const
{
return to_optional<T>(value(subKey));
}
template<typename T>
[[nodiscard]] std::optional<T> value(const QString &subKey) const
{
return to_optional<T>(value(subKey));
}
QString stringValue(const wchar_t *subKey) const;
QString stringValue(const QString &subKey) const;
#ifndef QT_NO_DEBUG_STREAM
friend Q_CORE_EXPORT QDebug operator<<(QDebug dbg, const QWinRegistryKey &);
#endif
private:
template<typename T>
static std::optional<T> to_optional(QVariant v)
{
if (v.isValid())
return qvariant_cast<T>(std::move(v));
return std::nullopt;
}
HKEY m_key = nullptr;
};
Q_DECLARE_SHARED(QWinRegistryKey)
class Q_CORE_EXPORT QWinRegistryNotifier : public QObject
{
Q_OBJECT
Q_DISABLE_COPY(QWinRegistryNotifier)
public:
explicit QWinRegistryNotifier(QWinRegistryKey &&key, QObject *parent = nullptr);
explicit QWinRegistryNotifier(HKEY parentHandle, const wchar_t *subKey,
QObject *parent = nullptr);
explicit QWinRegistryNotifier(HKEY parentHandle, const QString &subKey,
QObject *parent = nullptr);
[[nodiscard]] bool isValid() const { return m_key.isValid(); }
[[nodiscard]] const QWinRegistryKey &key() const { return m_key; }
Q_SIGNALS:
void valueChanged();
private:
QWinRegistryKey m_key;
QUniqueWin32NullHandle m_keyChangedEvent;
};
QT_END_NAMESPACE
#endif // QWINREGISTRY_H