Issue 98 - Use the libadblockplus update mechanism

jni/JniUpdateAvailableCallback.cpp

Index: jni/JniUpdateAvailableCallback.cpp
===================================================================
new file mode 100644
--- /dev/null
+++ b/jni/JniUpdateAvailableCallback.cpp
@@ -0,0 +1,68 @@
+/*
+ * 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"
+
+static jlong JNICALL JniCtor(JNIEnv* env, jclass clazz, jobject callbackObject)
+{
+  try
+  {
+    return JniPtrToLong(new JniUpdateAvailableCallback(env, callbackObject));
+  }
+  CATCH_THROW_AND_RETURN(env, 0)
+}
+
+static void JNICALL JniDtor(JNIEnv* env, jclass clazz, jlong ptr)
+{
+  delete JniLongToTypePtr<JniUpdateAvailableCallback>(ptr);
+}
+
+JniUpdateAvailableCallback::JniUpdateAvailableCallback(
+  JNIEnv* env, jobject callbackObject)
+  : JniCallbackBase(env, callbackObject)
+{
+}
+
+void JniUpdateAvailableCallback::Callback(const std::string& arg)
+{
+  JNIEnvAcquire env(GetJavaVM());
+
+  jclass clazz = env->GetObjectClass(GetCallbackObject());
+  jmethodID method = env->GetMethodID(clazz, "updateAvailableCallback",
+                                      "(Ljava/lang/String;)V");
+
+  if (method)
+  {
+    jstring jArg = env->NewStringUTF(arg.c_str());
+    env->CallVoidMethod(GetCallbackObject(), method, jArg);
+  }
+
+  CheckAndLogJavaException(*env);
+}
+
+static JNINativeMethod methods[] =
+{
+  { (char*)"ctor", (char*)"(Ljava/lang/Object;)J", (void*)JniCtor },
+  { (char*)"dtor", (char*)"(J)V", (void*)JniDtor }
+};
+
+extern "C" JNIEXPORT void JNICALL
+Java_org_adblockplus_libadblockplus_UpdateAvailableCallback_registerNatives(
+  JNIEnv *env, jclass clazz)
+{
+  env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(methods[0]));
+}