New JNI bindings

jni/JniCallbacks.cpp

+/*
+ * This file is part of Adblock Plus <http://adblockplus.org/>,
+ * Copyright (C) 2006-2014 Eyeo GmbH
+ *
+ * Adblock Plus is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as
+ * published by the Free Software Foundation.
+ *
+ * Adblock Plus is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "JniCallbacks.h"
+
+JniCallbackBase::JniCallbackBase(JNIEnv* env, jobject callbackObject)
+{
+  env->GetJavaVM(&javaVM);
+  this->callbackObject.reset(new JniGlobalReference<jobject>(env, callbackObject));
+  exceptionLoggerClass.reset(new JniGlobalReference<jclass>(env, env->FindClass(PKG("JniExceptionHandler"))));
+}
+
+JniCallbackBase::~JniCallbackBase()
+{
+
+}
+
+void JniCallbackBase::LogException(JNIEnv* env, jthrowable throwable) const
+{
+  jmethodID logMethod = env->GetStaticMethodID(exceptionLoggerClass->Get(), "logException", "(Ljava/lang/Throwable;)V");
+  if (logMethod)
+  {
+    env->CallStaticVoidMethod(exceptionLoggerClass->Get(), logMethod, throwable);
+  }
+}
+
+void JniCallbackBase::CheckAndLogJavaException(JNIEnv* env) const
+{
+  if (env->ExceptionCheck())
+  {
+    jthrowable throwable = env->ExceptionOccurred();
+    env->ExceptionClear();
+    LogException(env, throwable);
+  }
+}