Remote Assistance on Chrome OS Part II - Native Messaging renaming

remoting/host/native_messaging/pipe_messaging_channel.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_PIPE_MESSAGING_CHANNEL_H_
+#define REMOTING_HOST_NATIVE_MESSAGING_PIPE_MESSAGING_CHANNEL_H_
+
+#include "base/callback.h"
+#include "base/files/file.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/threading/non_thread_safe.h"
+#include "extensions/browser/api/messaging/native_messaging_channel.h"
+#include "remoting/host/native_messaging/native_messaging_reader.h"
+#include "remoting/host/native_messaging/native_messaging_writer.h"
+
+namespace base {
+class DictionaryValue;
+class Value;
+}  // namespace base
+
+namespace remoting {
+
+// An implementation of extensions::NativeMessagingChannel using a pipe. It
+// is used by the It2MeNativeMessagingHost and Me2MeNativeMessagingHost to
+// communicate with the chrome process.
+// TODO(kelvinp): Move this class to the extensions/browser/api/messaging
+// directory.
+class PipeMessagingChannel : public extensions::NativeMessagingChannel,
+                             public base::NonThreadSafe {
+ public:
+  typedef extensions::NativeMessagingChannel::EventHandler EventHandler;
+
+  // Constructs an object taking the ownership of |input| and |output|. Closes
+  // |input| and |output| to prevent the caller from using them.
+  PipeMessagingChannel(base::File input, base::File output);
+  virtual ~PipeMessagingChannel();
+
+  // extensions::NativeMessagingChannel implementation.
+  virtual void Start(EventHandler* event_handler) OVERRIDE;
+  virtual void SendMessage(scoped_ptr<base::Value> message) OVERRIDE;
+
+ private:
+  // Processes a message received from the client app.
+  void ProcessMessage(scoped_ptr<base::Value> message);
+
+  // Initiates shutdown.
+  void Shutdown();
+
+  NativeMessagingReader native_messaging_reader_;
+  scoped_ptr<NativeMessagingWriter> native_messaging_writer_;
+
+  EventHandler* event_handler_;
+  base::WeakPtr<PipeMessagingChannel> weak_ptr_;
+  base::WeakPtrFactory<PipeMessagingChannel> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(PipeMessagingChannel);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_NATIVE_MESSAGING_PIPE_MESSAGING_CHANNEL_H_