chrome/browser/supervised_user/legacy/supervised_user_pref_mapping_service.h

   1 // Copyright 2014 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_SUPERVISED_USER_LEGACY_SUPERVISED_USER_PREF_MAPPING_SERVICE_H_
   6 #define CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_PREF_MAPPING_SERVICE_H_
   7
   8 #include "base/callback.h"
   9 #include "base/callback_list.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/prefs/pref_change_registrar.h"
  13 #include "chrome/browser/supervised_user/supervised_users.h"
  14 #include "components/keyed_service/core/keyed_service.h"
  15
  16 class PrefService;
  17 class SupervisedUserSharedSettingsService;
  18
  19 // SupervisedUserPrefMappingService maps shared supervised user settings to user
  20 // preferences. When a shared supervised user setting is updated via sync, the
  21 // corresponding local user preference is set to this new value.
  22 class SupervisedUserPrefMappingService : public KeyedService {
  23  public:
  24   typedef base::CallbackList<void(const std::string&, const std::string&)>
  25       CallbackList;
  26
  27   SupervisedUserPrefMappingService(
  28       PrefService* prefs,
  29       SupervisedUserSharedSettingsService* shared_settings);
  30   ~SupervisedUserPrefMappingService() override;
  31
  32   // KeyedService implementation:
  33   void Shutdown() override;
  34
  35   void Init();
  36
  37   // Updates the supervised user shared setting when the avatar has changed.
  38   void OnAvatarChanged();
  39
  40   // Called when a supervised user shared setting was changed by receiving new
  41   // sync data. Updates the corresponding user pref.
  42   void OnSharedSettingChanged(const std::string& su_id, const std::string& key);
  43
  44  private:
  45   // Returns the current chrome avatar index that is stored as a supervised user
  46   // shared setting, or -1 if no avatar index is stored.
  47   int GetChromeAvatarIndex();
  48
  49   PrefService* prefs_;
  50   SupervisedUserSharedSettingsService* shared_settings_;
  51   scoped_ptr<CallbackList::Subscription> subscription_;
  52   std::string supervised_user_id_;
  53   PrefChangeRegistrar pref_change_registrar_;
  54   base::WeakPtrFactory<SupervisedUserPrefMappingService> weak_ptr_factory_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(SupervisedUserPrefMappingService);
  57 };
  58
  59 #endif  // CHROME_BROWSER_SUPERVISED_USER_LEGACY_SUPERVISED_USER_PREF_MAPPING_SERVICE_H_