HTML MessagePort as mojo::MessagePipeHandle

content/browser/android/app_web_message_port.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_BROWSER_ANDROID_APP_WEB_MESSAGE_PORT_H_
+#define CONTENT_BROWSER_ANDROID_APP_WEB_MESSAGE_PORT_H_
+
+#include "base/android/jni_weak_ref.h"
+#include "content/common/message_port.h"
+
+namespace content {
+
+class AppWebMessagePort {
+ public:
+  static void CreateAndBindToJavaObject(
+      JNIEnv* env,
+      mojo::ScopedMessagePipeHandle handle,
+      const base::android::JavaRef<jobject>& jobject);
+
+  static std::vector<MessagePort> UnwrapJavaArray(
+      JNIEnv* env,
+      const base::android::JavaRef<jobjectArray>& jports);
+
+  // Methods called from Java.
+  void CloseMessagePort(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& jcaller);
+  void PostMessage(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& jcaller,
+      const base::android::JavaParamRef<jstring>& jmessage,
+      const base::android::JavaParamRef<jobjectArray>& jports);
+  jboolean DispatchNextMessage(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& jcaller);
+  void StartReceivingMessages(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& jcaller);
+
+ private:
+  explicit AppWebMessagePort(
+      JNIEnv* env,
+      mojo::ScopedMessagePipeHandle handle,
+      const base::android::JavaRef<jobject>& jobject);
+  ~AppWebMessagePort();
+
+  void OnMessagesAvailable();
+
+  MessagePort port_;
+  JavaObjectWeakGlobalRef java_ref_;
+
+  DISALLOW_COPY_AND_ASSIGN(AppWebMessagePort);
+};
+
+bool RegisterAppWebMessagePort(JNIEnv* env);
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_APP_WEB_MESSAGE_PORT_H_