Remote Assistance on Chrome OS Part III - NativeMessageHost

remoting/host/native_messaging/native_messaging_pipe.h

+// Copyright 2014 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 REMOTING_HOST_NATIVE_MESSAGING_NATIVE_MESSAGING_PIPE_H_
+#define REMOTING_HOST_NATIVE_MESSAGING_NATIVE_MESSAGING_PIPE_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "extensions/browser/api/messaging/native_message_host.h"
+#include "extensions/browser/api/messaging/native_messaging_channel.h"
+
+namespace base {
+class Value;
+}
+
+namespace remoting {
+
+// Connects a extensions::NativeMessageHost to a PipeMessagingChannel.
+class NativeMessagingPipe
+    : public extensions::NativeMessagingChannel::EventHandler,
+      public extensions::NativeMessageHost::Client {
+ public:
+  NativeMessagingPipe();
+  virtual ~NativeMessagingPipe();
+
+  // Starts processing messages from the pipe.
+  void Start(scoped_ptr<extensions::NativeMessageHost> host,
+             scoped_ptr<extensions::NativeMessagingChannel> channel,
+             const base::Closure& quit_closure);
+
+  // extensions::NativeMessageHost::Client implementation.
+  virtual void PostMessageFromNativeHost(const std::string& message) override;
+  virtual void CloseChannel(const std::string& error_message) override;
+
+  // extensions::NativeMessagingChannel::EventHandler implementation.
+  virtual void OnMessage(scoped_ptr<base::Value> message) override;
+  virtual void OnDisconnect() override;
+
+ private:
+  base::Closure quit_closure_;
+  scoped_ptr<extensions::NativeMessagingChannel> channel_;
+  scoped_ptr<extensions::NativeMessageHost> host_;
+
+  DISALLOW_COPY_AND_ASSIGN(NativeMessagingPipe);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_NATIVE_MESSAGING_NATIVE_MESSAGING_PIPE_H_