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// Copyright (C) 2021 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 QJNI_ENVIRONMENT_H
#define QJNI_ENVIRONMENT_H
#include <QtCore/QScopedPointer>
#if defined(Q_QDOC) || defined(Q_OS_ANDROID)
#include <jni.h>
#include <QtCore/qjnitypes_impl.h>
QT_BEGIN_NAMESPACE
class QJniEnvironmentPrivate;
class Q_CORE_EXPORT QJniEnvironment
{
public:
QJniEnvironment();
~QJniEnvironment();
bool isValid() const;
JNIEnv *operator->() const;
JNIEnv &operator*() const;
JNIEnv *jniEnv() const;
jclass findClass(const char *className);
template<typename Class>
jclass findClass() { return findClass(QtJniTypes::Traits<Class>::className().data()); }
jmethodID findMethod(jclass clazz, const char *methodName, const char *signature);
template<typename ...Args>
jmethodID findMethod(jclass clazz, const char *methodName) {
constexpr auto signature = QtJniTypes::methodSignature<Args...>();
return findMethod(clazz, methodName, signature.data());
}
jmethodID findStaticMethod(jclass clazz, const char *methodName, const char *signature);
template<typename ...Args>
jmethodID findStaticMethod(jclass clazz, const char *methodName) {
constexpr auto signature = QtJniTypes::methodSignature<Args...>();
return findStaticMethod(clazz, methodName, signature.data());
}
jfieldID findField(jclass clazz, const char *fieldName, const char *signature);
template<typename T>
jfieldID findField(jclass clazz, const char *fieldName) {
constexpr auto signature = QtJniTypes::fieldSignature<T>();
return findField(clazz, fieldName, signature.data());
}
jfieldID findStaticField(jclass clazz, const char *fieldName, const char *signature);
template<typename T>
jfieldID findStaticField(jclass clazz, const char *fieldName) {
constexpr auto signature = QtJniTypes::fieldSignature<T>();
return findStaticField(clazz, fieldName, signature.data());
}
static JavaVM *javaVM();
bool registerNativeMethods(const char *className, const JNINativeMethod methods[], int size);
bool registerNativeMethods(jclass clazz, const JNINativeMethod methods[], int size);
bool registerNativeMethods(const char *className, std::initializer_list<JNINativeMethod> methods)
{
return registerNativeMethods(className, std::data(methods), methods.size());
}
bool registerNativeMethods(jclass clazz, std::initializer_list<JNINativeMethod> methods)
{
return registerNativeMethods(clazz, std::data(methods), methods.size());
}
template<typename Class
#ifndef Q_QDOC
, std::enable_if_t<QtJniTypes::isObjectType<Class>(), bool> = true
#endif
>
bool registerNativeMethods(std::initializer_list<JNINativeMethod> methods)
{
return registerNativeMethods(QtJniTypes::Traits<Class>::className().data(), methods);
}
#if QT_DEPRECATED_SINCE(6, 2)
// ### Qt 7: remove
QT_DEPRECATED_VERSION_X_6_2("Use the overload with a const JNINativeMethod[] instead.")
bool registerNativeMethods(const char *className, JNINativeMethod methods[], int size);
#endif
enum class OutputMode {
Silent,
Verbose
};
bool checkAndClearExceptions(OutputMode outputMode = OutputMode::Verbose);
static bool checkAndClearExceptions(JNIEnv *env, OutputMode outputMode = OutputMode::Verbose);
static JNIEnv *getJniEnv();
private:
Q_DISABLE_COPY_MOVE(QJniEnvironment)
QScopedPointer<QJniEnvironmentPrivate> d;
};
QT_END_NAMESPACE
#endif
#endif // QJNI_ENVIRONMENT_H
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