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// Copyright (c) 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.
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/observer_list.h"
#include "base/prefs/persistent_pref_store.h"
#include "base/prefs/pref_value_map.h"
// A light-weight prefstore implementation that keeps preferences
// in a memory backed store. This is not a persistent prefstore -- we
// subclass the PersistentPrefStore here since it is needed by the
// PrefService, which in turn is needed by the Autofill component.
class AwPrefStore : public PersistentPrefStore {
// Overriden from PrefStore.
virtual bool GetValue(const std::string& key,
const base::Value** result) 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;
// PersistentPrefStore overrides:
virtual bool GetMutableValue(const std::string& key,
base::Value** result) OVERRIDE;
virtual void ReportValueChanged(const std::string& key) OVERRIDE;
virtual void SetValue(const std::string& key, base::Value* value) OVERRIDE;
virtual void SetValueSilently(const std::string& key,
base::Value* value) OVERRIDE;
virtual void RemoveValue(const std::string& key) OVERRIDE;
virtual void MarkNeedsEmptyValue(const std::string& key) OVERRIDE;
virtual bool ReadOnly() const OVERRIDE;
virtual PrefReadError GetReadError() const OVERRIDE;
virtual PersistentPrefStore::PrefReadError ReadPrefs() OVERRIDE;
virtual void ReadPrefsAsync(ReadErrorDelegate* error_delegate) OVERRIDE;
virtual void CommitPendingWrite() OVERRIDE {}
virtual ~AwPrefStore();
// Stores the preference values.
PrefValueMap prefs_;
ObserverList<PrefStore::Observer, true> observers_;