// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_MANAGED_MODE_SUPERVISED_USER_PREF_STORE_H_
#define CHROME_BROWSER_MANAGED_MODE_SUPERVISED_USER_PREF_STORE_H_

#include "base/memory/scoped_ptr.h"
#include "base/observer_list.h"
#include "base/prefs/pref_store.h"
#include "chrome/browser/managed_mode/managed_users.h"

namespace base {
class DictionaryValue;
class Value;
}

class ManagedUserSettingsService;
class PrefValueMap;

// A PrefStore that gets its values from managed user settings via the
// ManagedUserSettingsService passed in at construction.
class SupervisedUserPrefStore : public PrefStore {
 public:
  SupervisedUserPrefStore(
      ManagedUserSettingsService* managed_user_settings_service);

  // PrefStore overrides:
  virtual bool GetValue(const std::string& key,
                        const base::Value** value) const OVERRIDE;
  virtual void AddObserver(PrefStore::Observer* observer) OVERRIDE;
  virtual void RemoveObserver(PrefStore::Observer* observer) OVERRIDE;
  virtual bool HasObservers() const OVERRIDE;
  virtual bool IsInitializationComplete() const OVERRIDE;

 private:
  virtual ~SupervisedUserPrefStore();

  void OnNewSettingsAvailable(const base::DictionaryValue* settings);

  base::WeakPtrFactory<SupervisedUserPrefStore> weak_ptr_factory_;

  scoped_ptr<PrefValueMap> prefs_;

  ObserverList<PrefStore::Observer, true> observers_;
};

#endif  // CHROME_BROWSER_MANAGED_MODE_SUPERVISED_USER_PREF_STORE_H_