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// Copyright 2014 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_USER_PREFS_TRACKED_DICTIONARY_HASH_STORE_CONTENTS_H_
#define COMPONENTS_USER_PREFS_TRACKED_DICTIONARY_HASH_STORE_CONTENTS_H_
#include "base/macros.h"
#include "components/user_prefs/tracked/hash_store_contents.h"
namespace base {
class DictionaryValue;
class Value;
} // namespace base
namespace user_prefs {
class PrefRegistrySyncable;
} // namespace user_prefs
// Implements HashStoreContents by storing MACs in a DictionaryValue. The
// DictionaryValue is presumed to be the contents of a PrefStore.
// RegisterProfilePrefs() may be used to register all of the preferences used by
// this object.
class DictionaryHashStoreContents : public HashStoreContents {
public:
// Constructs a DictionaryHashStoreContents that reads from and writes to
// |storage|.
explicit DictionaryHashStoreContents(base::DictionaryValue* storage);
// Registers required preferences.
static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
// HashStoreContents implementation
bool IsCopyable() const override;
std::unique_ptr<HashStoreContents> MakeCopy() const override;
base::StringPiece GetUMASuffix() const override;
void Reset() override;
bool GetMac(const std::string& path, std::string* out_value) override;
bool GetSplitMacs(const std::string& path,
std::map<std::string, std::string>* split_macs) override;
void SetMac(const std::string& path, const std::string& value) override;
void SetSplitMac(const std::string& path,
const std::string& split_path,
const std::string& value) override;
void ImportEntry(const std::string& path,
const base::Value* in_value) override;
bool RemoveEntry(const std::string& path) override;
const base::DictionaryValue* GetContents() const override;
std::string GetSuperMac() const override;
void SetSuperMac(const std::string& super_mac) override;
private:
base::DictionaryValue* storage_;
// Helper function to get a mutable version of the macs from |storage_|,
// creating it if needed and |create_if_null| is true.
base::DictionaryValue* GetMutableContents(bool create_if_null);
DISALLOW_COPY_AND_ASSIGN(DictionaryHashStoreContents);
};
#endif // COMPONENTS_USER_PREFS_TRACKED_DICTIONARY_HASH_STORE_CONTENTS_H_
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