remoting/host/config_watcher.h

   1 // Copyright 2013 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 REMOTING_HOST_CONFIG_WATCHER_H_
   6 #define REMOTING_HOST_CONFIG_WATCHER_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/files/file_path.h"
  13 #include "base/memory/ref_counted.h"
  14
  15 namespace remoting {
  16
  17 class ConfigWatcher {
  18  public:
  19   class Delegate {
  20    public:
  21     virtual ~Delegate() {}
  22
  23     // Called once after starting watching the configuration file and every time
  24     // the file changes.
  25     virtual void OnConfigUpdated(const std::string& serialized_config) = 0;
  26
  27     // Called when the configuration file watcher encountered an error.
  28     virtual void OnConfigWatcherError() = 0;
  29   };
  30
  31   virtual void Watch(Delegate* delegate) = 0;
  32
  33   ConfigWatcher() {}
  34
  35   virtual ~ConfigWatcher() {}
  36  private:
  37   DISALLOW_COPY_AND_ASSIGN(ConfigWatcher);
  38 };
  39
  40 }  // namespace remoting
  41
  42 #endif  // REMOTING_HOST_CONFIG_WATCHER_H_