chrome/browser/supervised_user/supervised_user_pref_store.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_SUPERVISED_USER_PREF_STORE_H_
   6 #define CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_PREF_STORE_H_
   7
   8 #include <string>
   9
  10 #include "base/callback_list.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/observer_list.h"
  13 #include "base/prefs/pref_store.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/browser/supervised_user/supervised_users.h"
  16 #include "content/public/browser/notification_observer.h"
  17 #include "content/public/browser/notification_registrar.h"
  18
  19 namespace base {
  20 class DictionaryValue;
  21 class Value;
  22 }
  23
  24 class PrefValueMap;
  25 class SupervisedUserSettingsService;
  26
  27 // A PrefStore that gets its values from supervised user settings via the
  28 // SupervisedUserSettingsService passed in at construction.
  29 class SupervisedUserPrefStore : public PrefStore,
  30                                 public content::NotificationObserver {
  31  public:
  32   SupervisedUserPrefStore(
  33       SupervisedUserSettingsService* supervised_user_settings_service);
  34
  35   // PrefStore overrides:
  36   bool GetValue(const std::string& key,
  37                 const base::Value** value) const override;
  38   void AddObserver(PrefStore::Observer* observer) override;
  39   void RemoveObserver(PrefStore::Observer* observer) override;
  40   bool HasObservers() const override;
  41   bool IsInitializationComplete() const override;
  42
  43   // NotificationObserver implementation.
  44   void Observe(int type,
  45                const content::NotificationSource& src,
  46                const content::NotificationDetails& details) override;
  47
  48  private:
  49   ~SupervisedUserPrefStore() override;
  50
  51   void OnNewSettingsAvailable(const base::DictionaryValue* settings);
  52
  53   scoped_ptr<base::CallbackList<void(
  54       const base::DictionaryValue*)>::Subscription> user_settings_subscription_;
  55   content::NotificationRegistrar unsubscriber_registrar_;
  56
  57   scoped_ptr<PrefValueMap> prefs_;
  58
  59   base::ObserverList<PrefStore::Observer, true> observers_;
  60 };
  61
  62 #endif  // CHROME_BROWSER_SUPERVISED_USER_SUPERVISED_USER_PREF_STORE_H_