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// Copyright (C) 2022 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 QPERMISSIONS_H
#define QPERMISSIONS_H
#if 0
#pragma qt_class(QPermissions)
#endif
#include <QtCore/qglobal.h>
#include <QtCore/qtmetamacros.h>
#include <QtCore/qvariant.h>
#include <QtCore/qshareddata_impl.h>
#include <QtCore/qtypeinfo.h>
#include <QtCore/qmetatype.h>
#include <optional>
#if !defined(Q_QDOC)
QT_REQUIRE_CONFIG(permissions);
#endif
QT_BEGIN_NAMESPACE
#ifndef QT_NO_DEBUG_STREAM
class QDebug;
#endif
struct QMetaObject;
class QCoreApplication;
class QPermission
{
template <typename T, typename Enable = void>
static constexpr inline bool is_permission_v = false;
template <typename T>
using if_permission = std::enable_if_t<is_permission_v<T>, bool>;
public:
explicit QPermission() = default;
template <typename T, if_permission<T> = true>
QPermission(const T &t) : m_data(QVariant::fromValue(t)) {}
Qt::PermissionStatus status() const { return m_status; }
QMetaType type() const { return m_data.metaType(); }
template <typename T, if_permission<T> = true>
std::optional<T> value() const
{
if (auto p = data(QMetaType::fromType<T>()))
return *static_cast<const T *>(p);
return std::nullopt;
}
#ifndef QT_NO_DEBUG_STREAM
friend Q_CORE_EXPORT QDebug operator<<(QDebug debug, const QPermission &);
#endif
private:
Q_CORE_EXPORT const void *data(QMetaType id) const;
Qt::PermissionStatus m_status = Qt::PermissionStatus::Undetermined;
QVariant m_data;
friend class QCoreApplication;
};
template <typename T>
constexpr bool QPermission::is_permission_v<T, typename T::QtPermissionHelper> = true;
#define QT_PERMISSION(ClassName) \
using QtPermissionHelper = void; \
friend class QPermission; \
union U { \
U() : d(nullptr) {} \
U(ShortData _data) : data(_data) {} \
U(ClassName##Private *_d) : d(_d) {} \
ShortData data; \
ClassName##Private *d; \
} u; \
public: \
Q_CORE_EXPORT ClassName(); \
Q_CORE_EXPORT ClassName(const ClassName &other) noexcept; \
ClassName(ClassName &&other) noexcept \
: u{other.u} { other.u.d = nullptr; } \
Q_CORE_EXPORT ~ClassName(); \
Q_CORE_EXPORT ClassName &operator=(const ClassName &other) noexcept; \
QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_MOVE_AND_SWAP(ClassName) \
void swap(ClassName &other) noexcept { std::swap(u, other.u); } \
private: \
/*end*/
class QLocationPermissionPrivate;
class QLocationPermission
{
Q_GADGET_EXPORT(Q_CORE_EXPORT)
public:
enum Accuracy : quint8 {
Approximate,
Precise,
};
Q_ENUM(Accuracy)
Q_CORE_EXPORT void setAccuracy(Accuracy accuracy);
Q_CORE_EXPORT Accuracy accuracy() const;
enum Availability : quint8 {
WhenInUse,
Always,
};
Q_ENUM(Availability)
Q_CORE_EXPORT void setAvailability(Availability availability);
Q_CORE_EXPORT Availability availability() const;
private:
struct ShortData {
Accuracy accuracy;
Availability availability;
char reserved[sizeof(void*) - sizeof(accuracy) - sizeof(availability)];
};
QT_PERMISSION(QLocationPermission)
};
Q_DECLARE_SHARED(QLocationPermission)
class QCalendarPermissionPrivate;
class QCalendarPermission
{
Q_GADGET_EXPORT(Q_CORE_EXPORT)
public:
enum AccessMode : quint8 {
ReadOnly,
ReadWrite,
};
Q_ENUM(AccessMode)
Q_CORE_EXPORT void setAccessMode(AccessMode mode);
Q_CORE_EXPORT AccessMode accessMode() const;
private:
struct ShortData {
AccessMode mode;
char reserved[sizeof(void*) - sizeof(mode)];
};
QT_PERMISSION(QCalendarPermission)
};
Q_DECLARE_SHARED(QCalendarPermission)
class QContactsPermissionPrivate;
class QContactsPermission
{
Q_GADGET_EXPORT(Q_CORE_EXPORT)
public:
enum AccessMode : quint8 {
ReadOnly,
ReadWrite,
};
Q_ENUM(AccessMode)
Q_CORE_EXPORT void setAccessMode(AccessMode mode);
Q_CORE_EXPORT AccessMode accessMode() const;
private:
struct ShortData {
AccessMode mode;
char reserved[sizeof(void*) - sizeof(mode)];
};
QT_PERMISSION(QContactsPermission)
};
Q_DECLARE_SHARED(QContactsPermission)
class QBluetoothPermissionPrivate;
class QBluetoothPermission
{
Q_GADGET_EXPORT(Q_CORE_EXPORT)
public:
enum CommunicationMode : quint8 {
Access = 0x01,
Advertise = 0x02,
Default = Access | Advertise,
};
Q_DECLARE_FLAGS(CommunicationModes, CommunicationMode)
Q_FLAG(CommunicationModes)
Q_CORE_EXPORT void setCommunicationModes(CommunicationModes modes);
Q_CORE_EXPORT CommunicationModes communicationModes() const;
private:
struct ShortData {
CommunicationMode mode;
char reserved[sizeof(void*) - sizeof(mode)];
};
QT_PERMISSION(QBluetoothPermission)
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QBluetoothPermission::CommunicationModes)
Q_DECLARE_SHARED(QBluetoothPermission)
#define Q_DECLARE_MINIMAL_PERMISSION(ClassName) \
class ClassName##Private; \
class ClassName \
{ \
struct ShortData { char reserved[sizeof(void*)]; }; \
QT_PERMISSION(ClassName) \
}; \
Q_DECLARE_SHARED(ClassName)
Q_DECLARE_MINIMAL_PERMISSION(QCameraPermission)
Q_DECLARE_MINIMAL_PERMISSION(QMicrophonePermission)
#undef QT_PERMISSION
#undef Q_DECLARE_MINIMAL_PERMISSION
QT_END_NAMESPACE
#endif // QPERMISSIONS_H
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