C++ JObject::call方法代码示例

void JClass::registerNativeMethods(const QList<JNativeMethod>& m)
{
	if (m.isEmpty())
		return;

	JNINativeMethod* nm = new JNINativeMethod[m.size()];

	for (int i = 0; i < m.size(); i++)
		nm[i] = m[i].toStruct();

	JNIEnv* env = *JVM::instance();
	env->RegisterNatives(m_class, nm, m.size());

	delete [] nm;

	JObject ex = env->ExceptionOccurred();

	if (!ex.isNull())
	{
		env->ExceptionClear();
		ex.call("printStackTrace");
		QString message = ex.call("getMessage", JSignature().retString()).toString();
		QString className = ex.getClass().getClassName();

		throw JException(message, className, ex);
	}
}

void SettingsJavaPluginForm::load()
{
	treeInstalled->clear();
	treeAvailable->clear();
	treeUpdates->clear();
	m_availablePlugins.clear();

	QMap<QString,QString> packages = JVM::instance()->getPackageVersions();

	connect(m_network, SIGNAL(finished(QNetworkReply*)), this, SLOT(finished(QNetworkReply*)));
	m_network->get(QNetworkRequest(QUrl(UPDATE_URL + "Index?version=" + VERSION)));

	m_installedPlugins = JVM::instance()->getPackageVersions();

	loadInstalled();
	treeInstalled->header()->resizeSection(0, 200);
	treeAvailable->header()->resizeSection(0, 200);
	treeUpdates->header()->resizeSection(0, 200);

	JObject runtime = JClass("java.lang.Runtime").callStatic("getRuntime", JSignature().ret("java.lang.Runtime")).value<JObject>();

	labelJavaHeap->setText(QString("Java heap: %1 kB, %2 kB free")
			       .arg(runtime.call("totalMemory", JSignature().retLong()).toLongLong()/1024)
			       .arg(runtime.call("freeMemory", JSignature().retLong()).toLongLong()/1024));

	checkAutoCheck->setChecked(getSettingsValue("java/check_updates").toBool());
}

void JavaUpload::globalInit()
{
	if (!JVM::JVMAvailable())
		return;
	
	// locate Java plugins
	try
	{
		JUploadPlugin::registerNatives();

		JClass helper("info.dolezel.fatrat.plugins.helpers.NativeHelpers");
		JClass annotation("info.dolezel.fatrat.plugins.annotations.UploadPluginInfo");
		JClass annConfigDialog("info.dolezel.fatrat.plugins.annotations.ConfigDialog");
		QList<QVariant> args;

		args << "info.dolezel.fatrat.plugins" << annotation.toVariant();

		JArray arr = helper.callStatic("findAnnotatedClasses",
						  JSignature().addString().add("java.lang.Class").retA("java.lang.Class"),
						  args).value<JArray>();
		qDebug() << "Found" << arr.size() << "annotated classes (UploadPluginInfo)";

		int classes = arr.size();
		for (int i = 0; i < classes; i++)
		{
			try
			{
				JClass obj = (jobject) arr.getObject(i);
				JObject ann = obj.getAnnotation(annotation);
				QString name = ann.call("name", JSignature().retString()).toString();
				QString clsName = obj.getClassName();
				JObject instance(obj, JSignature());

				qDebug() << "Class name:" << clsName;
				qDebug() << "Name:" << name;

				JObject cfgDlg = obj.getAnnotation(annConfigDialog);

				JavaEngine e = { "EXT - " + name.toStdString(), clsName.toStdString() };

				if (!cfgDlg.isNull())
					e.configDialog = cfgDlg.call("value", JSignature().retString()).toString();

				if (instance.instanceOf("info.dolezel.fatrat.plugins.extra.URLAcceptableFilter"))
					e.ownAcceptable = instance;
				if (instance.instanceOf("info.dolezel.fatrat.plugins.listeners.ConfigListener"))
					g_configListeners << instance;
				m_engines[clsName] = e;

				qDebug() << "createInstance of " << clsName;

				EngineEntry entry;
				entry.longName = m_engines[clsName].name.c_str();
				entry.shortName = m_engines[clsName].shortName.c_str();
				entry.lpfnAcceptable2 = JavaUpload::acceptable;
				entry.lpfnCreate2 = JavaUpload::createInstance;
				entry.lpfnInit = 0;
				entry.lpfnExit = 0;
				entry.lpfnMultiOptions = 0;

				addTransferClass(entry, Transfer::Upload);
			}
			catch (const RuntimeException& e)
			{
				qDebug() << e.what();
			}
		}
	}
	catch (const RuntimeException& e)
	{
		qDebug() << e.what();
	}
}

void JavaExtractor::globalInit()
{
	try {
		JClass helper("info.dolezel.fatrat.plugins.helpers.NativeHelpers");
		JClass annotation("info.dolezel.fatrat.plugins.annotations.ExtractorPluginInfo");

		JExtractorPlugin::registerNatives();

		JArgs args;

		args << "info.dolezel.fatrat.plugins" << annotation.toVariant();

		JArray arr = helper.callStatic("findAnnotatedClasses",
						  JSignature().addString().add("java.lang.Class").retA("java.lang.Class"),
						  args).value<JArray>();
		qDebug() << "Found" << arr.size() << "annotated classes (ExtractorPluginInfo)";

		int classes = arr.size();
		for (int i = 0; i < classes; i++)
		{
			try
			{
				JClass obj = (jobject) arr.getObject(i);
				JObject ann = obj.getAnnotation(annotation);
				QString regexp = ann.call("regexp", JSignature().retString()).toString();
				QString name = ann.call("name", JSignature().retString()).toString();
				QString targetClassName = ann.call("transferClassName", JSignature().retString()).toString();
				QString clsName = obj.getClassName();
				JObject instance(obj, JSignature());

				if (targetClassName.isEmpty())
				{
					JClass cls = JClass(ann.call("transferClass", JSignature().ret("java.lang.Class")).value<JObject>());
					if (!cls.isNull() && cls.getClassName() != "java.lang.Object")
						targetClassName = cls.getClassName();
				}

				qDebug() << "Class name:" << clsName;
				qDebug() << "Name:" << name;
				qDebug() << "Regexp:" << regexp;

				JavaEngine e = { "EXT - " + name.toStdString(), clsName.toStdString(), QRegExp(regexp) };

				if (instance.instanceOf("info.dolezel.fatrat.plugins.extra.URLAcceptableFilter"))
					e.ownAcceptable = instance;
				if (instance.instanceOf("info.dolezel.fatrat.plugins.listeners.ConfigListener"))
					g_configListeners << instance;
				e.targetClass = targetClassName;

				m_engines[clsName] = e;

				EngineEntry entry;
				entry.longName = m_engines[clsName].name.c_str();
				entry.shortName = m_engines[clsName].shortName.c_str();
				entry.lpfnAcceptable2 = JavaExtractor::acceptable;
				entry.lpfnCreate2 = JavaExtractor::createInstance;
				entry.lpfnInit = 0;
				entry.lpfnExit = 0;
				entry.lpfnMultiOptions = 0;

				addTransferClass(entry, Transfer::Download);
			}
			catch (const RuntimeException& e)
			{
				qDebug() << e.what();
			}
		}
	}
	catch (const RuntimeException& e)
	{
		qDebug() << e.what();
	}
}

QVariant JClass::callStatic(const char* name, const char* sig, QList<QVariant> args)
{
	JScope s;

	JNIEnv* env = *JVM::instance();
	jmethodID mid = env->GetStaticMethodID(m_class, name, sig);
	if (!mid)
		throw RuntimeException(QObject::tr("Method %1 %2 not found").arg(name).arg(sig));

	JValue vals[args.size()];
	jvalue jargs[args.size()];

	for(int i=0;i<args.size();i++)
	{
		vals[i] = variantToValue(args[i]);
		jargs[i] = vals[i];
	}

	const char* rvtype = strchr(sig, ')');
	if (!rvtype)
		throw RuntimeException(QObject::tr("Invalid method return type").arg(name).arg(sig));
	rvtype++;

	QVariant retval;

	switch (*rvtype)
	{
	case 'V':
		env->CallStaticVoidMethodA(m_class, mid, jargs);
		break;
	case '[':
		{
			jobject obj = env->CallStaticObjectMethodA(m_class, mid, jargs);
			retval.setValue<JArray>(JArray(obj));
			break;
		}
	case 'L':
		{
			jclass string_class = env->FindClass("java/lang/String");
			jobject obj = env->CallStaticObjectMethodA(m_class, mid, jargs);
			if (obj && env->IsInstanceOf(obj, string_class) && !strcmp(rvtype+1, "java/lang/String;"))
				retval = JString(jstring(obj)).str();
			else
			{
				QVariant var;
				var.setValue<JObject>(JObject(obj));
				retval = var;
			}
			break;
		}
	case 'Z':
		retval = (bool) env->CallStaticBooleanMethodA(m_class, mid, jargs);
		break;
	case 'B':
		retval = env->CallStaticByteMethodA(m_class, mid, jargs);
		break;
	case 'C':
		retval = env->CallStaticCharMethodA(m_class, mid, jargs);
		break;
	case 'S':
		retval = env->CallStaticShortMethodA(m_class, mid, jargs);
		break;
	case 'I':
		retval = env->CallStaticIntMethodA(m_class, mid, jargs);
		break;
	case 'J':
		retval = (qlonglong) env->CallStaticLongMethodA(m_class, mid, jargs);
		break;
	case 'F':
		retval = env->CallStaticFloatMethodA(m_class, mid, jargs);
		break;
	case 'D':
		retval = env->CallStaticDoubleMethodA(m_class, mid, jargs);
		break;
	default:
		throw RuntimeException(QObject::tr("Unknown Java data type: %1").arg(*rvtype));
	}

	JObject ex = env->ExceptionOccurred();

	if (!ex.isNull())
	{
		env->ExceptionClear();
		ex.call("printStackTrace");
		QString message = ex.call("getMessage", JSignature().retString()).toString();
		QString className = ex.getClass().getClassName();

		throw JException(message, className, ex);
	}

	return retval;
}