| // Copyright (c) 2012 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_DAEMON_CONFIG_WATCHER_H_ |
| #define REMOTING_HOST_DAEMON_CONFIG_WATCHER_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/files/file_path.h" |
| #include "base/memory/ref_counted.h" |
| |
| namespace base { |
| class SingleThreadTaskRunner; |
| } // namespace base |
| |
| namespace remoting { |
| |
| extern const char kHostConfigSwitchName[]; |
| extern const base::FilePath::CharType kDefaultHostConfigFile[]; |
| |
| class ConfigFileWatcherImpl; |
| |
| class ConfigFileWatcher { |
| public: |
| class Delegate { |
| public: |
| virtual ~Delegate(); |
| |
| // Called once after starting watching the configuration file and every time |
| // the file changes. |
| virtual void OnConfigUpdated(const std::string& serialized_config) = 0; |
| |
| // Called when the configuration file watcher encountered an error. |
| virtual void OnConfigWatcherError() = 0; |
| }; |
| |
| // Creates a configuration file watcher that lives at the |io_task_runner| |
| // thread but posts config file updates on on |main_task_runner|. |
| ConfigFileWatcher( |
| scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, |
| scoped_refptr<base::SingleThreadTaskRunner> io_task_runner, |
| Delegate* delegate); |
| virtual ~ConfigFileWatcher(); |
| |
| // Starts watching |config_path|. |
| void Watch(const base::FilePath& config_path); |
| |
| private: |
| scoped_refptr<ConfigFileWatcherImpl> impl_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ConfigFileWatcher); |
| }; |
| |
| } // namespace remoting |
| |
| #endif // REMOTING_HOST_DAEMON_CONFIG_WATCHER_H_ |