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// Copyright (c) 2012 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 COMPONENTS_PREFS_VALUE_MAP_PREF_STORE_H_
#define COMPONENTS_PREFS_VALUE_MAP_PREF_STORE_H_
#include <stdint.h>
#include <map>
#include <string>
#include "base/macros.h"
#include "base/observer_list.h"
#include "components/prefs/base_prefs_export.h"
#include "components/prefs/pref_value_map.h"
#include "components/prefs/writeable_pref_store.h"
// A basic PrefStore implementation that uses a simple name-value map for
// storing the preference values.
class COMPONENTS_PREFS_EXPORT ValueMapPrefStore : public WriteablePrefStore {
public:
ValueMapPrefStore();
// PrefStore overrides:
bool GetValue(const std::string& key,
const base::Value** value) const override;
void AddObserver(PrefStore::Observer* observer) override;
void RemoveObserver(PrefStore::Observer* observer) override;
bool HasObservers() const override;
// WriteablePrefStore overrides:
void SetValue(const std::string& key,
std::unique_ptr<base::Value> value,
uint32_t flags) override;
void RemoveValue(const std::string& key, uint32_t flags) override;
bool GetMutableValue(const std::string& key, base::Value** value) override;
void ReportValueChanged(const std::string& key, uint32_t flags) override;
void SetValueSilently(const std::string& key,
std::unique_ptr<base::Value> value,
uint32_t flags) override;
protected:
~ValueMapPrefStore() override;
// Notify observers about the initialization completed event.
void NotifyInitializationCompleted();
private:
PrefValueMap prefs_;
base::ObserverList<PrefStore::Observer, true> observers_;
DISALLOW_COPY_AND_ASSIGN(ValueMapPrefStore);
};
#endif // COMPONENTS_PREFS_VALUE_MAP_PREF_STORE_H_
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