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 APPS_APP_RESTORE_SERVICE_H_
6#define APPS_APP_RESTORE_SERVICE_H_
7
8#include <string>
9#include <vector>
10
11#include "apps/app_lifetime_monitor.h"
12#include "components/keyed_service/core/keyed_service.h"
13#include "extensions/browser/app_window/app_window_registry.h"
14
15namespace extensions {
16class Extension;
17}
18
19class Profile;
20
21namespace apps {
22
23// Tracks what apps need to be restarted when the browser restarts.
24class AppRestoreService : public KeyedService,
25                          public AppLifetimeMonitor::Observer {
26 public:
27  // Returns true if apps should be restored on the current platform, given
28  // whether this new browser process launched due to a restart.
29  static bool ShouldRestoreApps(bool is_browser_restart);
30
31  explicit AppRestoreService(Profile* profile);
32
33  // Restart apps that need to be restarted and clear the "running" preference
34  // from apps to prevent them being restarted in subsequent restarts.
35  void HandleStartup(bool should_restore_apps);
36
37  // Returns whether this extension is running or, at startup, whether it was
38  // running when Chrome was last terminated.
39  bool IsAppRestorable(const std::string& extension_id);
40
41  static AppRestoreService* Get(Profile* profile);
42
43 private:
44  // AppLifetimeMonitor::Observer.
45  virtual void OnAppStart(Profile* profile, const std::string& app_id) OVERRIDE;
46  virtual void OnAppActivated(Profile* profile,
47                              const std::string& app_id) OVERRIDE;
48  virtual void OnAppDeactivated(Profile* profile,
49                                const std::string& app_id) OVERRIDE;
50  virtual void OnAppStop(Profile* profile, const std::string& app_id) OVERRIDE;
51  virtual void OnChromeTerminating() OVERRIDE;
52
53  // KeyedService.
54  virtual void Shutdown() OVERRIDE;
55
56  void RecordAppStart(const std::string& extension_id);
57  void RecordAppStop(const std::string& extension_id);
58  void RecordAppActiveState(const std::string& id, bool is_active);
59
60  void RestoreApp(const extensions::Extension* extension);
61
62  void StartObservingAppLifetime();
63  void StopObservingAppLifetime();
64
65  Profile* profile_;
66
67  DISALLOW_COPY_AND_ASSIGN(AppRestoreService);
68};
69
70}  // namespace apps
71
72#endif  // APPS_APP_RESTORE_SERVICE_H_
73