New JNI bindings

jni/JniCallbacks.h

+/*
+ * 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/>.
+ */
+
+#ifndef JNICALLBACKS_H_
+#define JNICALLBACKS_H_
+
+#include <AdblockPlus.h>
+#include "Utils.h"
+#include "JniJsValue.h"
+
+namespace AdblockPlus
+{
+namespace Android
+{
+
+class JniCallbackBase
+{
+public:
+  JniCallbackBase(JNIEnv* env, jobject callbackObject)
+  {
+    env->GetJavaVM(&m_JavaVM);
+    m_CallbackObject.reset(new JniGlobalReference<jobject>(env, callbackObject));
+    m_ExceptionLoggerClass.reset(new JniGlobalReference<jclass>(env, env->FindClass(PKG("JniExceptionHandler"))));
+  }
+
+  virtual ~JniCallbackBase()
+  {
+  }
+
+  inline JavaVM* GetJavaVM() const
+  {
+    return m_JavaVM;
+  }
+
+  inline jobject GetCallbackObject() const
+  {
+    return m_CallbackObject->get();
+  }
+
+  void LogException(JNIEnv* env, jthrowable throwable) const
+  {
+    jmethodID logMethod = env->GetStaticMethodID(m_ExceptionLoggerClass->get(), "logException", "(Ljava/lang/Throwable;)V");
+    if (logMethod)
+    {
+      env->CallStaticVoidMethod(m_ExceptionLoggerClass->get(), logMethod, throwable);
+    }
+  }
+
+  void CheckAndLogJavaException(JNIEnv* env) const
+  {
+    if (env->ExceptionCheck())
+    {
+      jthrowable throwable = env->ExceptionOccurred();
+      env->ExceptionClear();
+      LogException(env, throwable);
+    }
+  }
+
+private:
+  JavaVM* m_JavaVM;
+  JniGlobalReference<jobject>::PTR m_CallbackObject;
+  JniGlobalReference<jclass>::PTR m_ExceptionLoggerClass;
+};
+
+class JniEventCallback: public JniCallbackBase
+{
+public:
+  JniEventCallback(JNIEnv* env, jobject callbackObject);
+  virtual ~JniEventCallback();
+  void Callback(AdblockPlus::JsValueList& params);
+};
+
+class JniUpdaterCallback: public JniCallbackBase
+{
+public:
+  JniUpdaterCallback(JNIEnv* env, jobject callbackObject);
+  virtual ~JniUpdaterCallback();
+  void Callback(const std::string& arg);
+};
+
+class JniFilterChangeCallback: public JniCallbackBase
+{
+public:
+  JniFilterChangeCallback(JNIEnv* env, jobject callbackObject);
+  virtual ~JniFilterChangeCallback();
+  void Callback(const std::string& arg, const AdblockPlus::JsValuePtr jsValue);
+};
+
+class JniLogSystemCallback: public JniCallbackBase, public AdblockPlus::LogSystem
+{
+public:
+  JniLogSystemCallback(JNIEnv* env, jobject callbackObject);
+  virtual ~JniLogSystemCallback();
+  void operator()(AdblockPlus::LogSystem::LogLevel logLevel, const std::string& message, const std::string& source);
+private:
+  JniGlobalReference<jclass>::PTR m_LogLevelClass;
+};
+
+class JniWebRequest: public JniCallbackBase, public AdblockPlus::WebRequest
+{
+public:
+  JniWebRequest(JNIEnv* env, jobject callbackObject);
+  virtual ~JniWebRequest();
+  AdblockPlus::ServerResponse GET(const std::string& url, const AdblockPlus::HeaderList& requestHeaders) const;
+private:
+  jobject NewTuple(JNIEnv* env, const std::string& a, const std::string& b) const;
+
+  JniGlobalReference<jclass>::PTR m_TupleClass;
+  JniGlobalReference<jclass>::PTR m_ServerResponseClass;
+};
+
+} // namespace Android
+} // namespace AdblockPlus
+
+#endif /* JNICALLBACKS_H_ */