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
15namespace remoting {
16
17class 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_
43