src/chrome/browser/extensions/api/messaging/native_message_port.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGE_PORT_H_
   6 #define CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGE_PORT_H_
   7
   8 #include "base/threading/thread_checker.h"
   9 #include "chrome/browser/extensions/api/messaging/message_service.h"
  10
  11 namespace extensions {
  12 class NativeMessageProcessHost;
  13
  14 // A port that manages communication with a native application.
  15 // All methods must be called on the UI Thread of the browser process.
  16 class NativeMessagePort : public MessageService::MessagePort {
  17  public:
  18   NativeMessagePort(base::WeakPtr<MessageService> message_service,
  19                     int port_id,
  20                     scoped_ptr<NativeMessageHost> native_message_host);
  21   ~NativeMessagePort() override;
  22
  23   // MessageService::MessagePort implementation.
  24   void DispatchOnMessage(const Message& message, int target_port_id) override;
  25
  26  private:
  27   class Core;
  28   void PostMessageFromNativeHost(const std::string& message);
  29   void CloseChannel(const std::string& error_message);
  30
  31   base::ThreadChecker thread_checker_;
  32   base::WeakPtr<MessageService> weak_message_service_;
  33   scoped_refptr<base::SingleThreadTaskRunner> host_task_runner_;
  34   int port_id_;
  35   scoped_ptr<Core> core_;
  36
  37   base::WeakPtrFactory<NativeMessagePort> weak_factory_;
  38 };
  39
  40 }  // namespace extensions
  41
  42 #endif  // CHROME_BROWSER_EXTENSIONS_API_MESSAGING_NATIVE_MESSAGE_PORT_H_