diff options
Diffstat (limited to 'src/plugins/platforms/android/androidbackendregister.h')
-rw-r--r-- | src/plugins/platforms/android/androidbackendregister.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/plugins/platforms/android/androidbackendregister.h b/src/plugins/platforms/android/androidbackendregister.h new file mode 100644 index 0000000000..c186f7e107 --- /dev/null +++ b/src/plugins/platforms/android/androidbackendregister.h @@ -0,0 +1,67 @@ +// Copyright (C) 2024 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 ANDROIDBACKENDREGISTER_H +#define ANDROIDBACKENDREGISTER_H + +#include <type_traits> + +#include <QtCore/qjnienvironment.h> +#include <QtCore/qjnitypes.h> +#include <QtCore/qjniobject.h> + +#include <QtCore/qstring.h> +#include <QtCore/qmap.h> +#include <QtCore/qmutex.h> +#include <QtCore/qloggingcategory.h> + +QT_BEGIN_NAMESPACE + +Q_DECLARE_LOGGING_CATEGORY(lcAndroidBackendRegister) + +template <typename T> +using ValidInterfaceType = std::enable_if_t<std::is_base_of_v<QtJniTypes::JObjectBase, T>, bool>; + +class AndroidBackendRegister +{ +public: + static bool registerNatives(); + + template <typename T, ValidInterfaceType<T> = true> + [[nodiscard]] T getInterface() + { + QMutexLocker lock(&m_registerMutex); + return m_register.value(QString(QtJniTypes::Traits<T>::className().data())); + } + + template <typename Object> + using IsObjectType = + typename std::disjunction<std::is_base_of<QJniObject, Object>, + std::is_base_of<QtJniTypes::JObjectBase, Object>>; + + template <typename Interface, typename Ret, typename... Args, + ValidInterfaceType<Interface> = true> + auto callInterface(const char *func, Args... args) + { + if (const auto obj = getInterface<Interface>(); obj.isValid()) + return obj.template callMethod<Ret, Args...>(func, std::forward<Args>(args)...); + + if constexpr (IsObjectType<Ret>::value) + return Ret(QJniObject()); + if constexpr (!std::is_same_v<Ret, void>) + return Ret{}; + } + +private: + QMutex m_registerMutex; + QMap<QString, QJniObject> m_register; + + static void registerBackend(JNIEnv *, jclass, jclass interfaceClass, jobject interface); + Q_DECLARE_JNI_NATIVE_METHOD_IN_CURRENT_SCOPE(registerBackend) + static void unregisterBackend(JNIEnv *, jclass, jclass interfaceClass); + Q_DECLARE_JNI_NATIVE_METHOD_IN_CURRENT_SCOPE(unregisterBackend) +}; + +QT_END_NAMESPACE + +#endif // ANDROIDBACKENDREGISTER_H |