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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 BASE_PREFS_DEFAULT_PREF_STORE_H_
#define BASE_PREFS_DEFAULT_PREF_STORE_H_
#include <string>
#include "base/prefs/base_prefs_export.h"
#include "base/prefs/pref_store.h"
#include "base/prefs/pref_value_map.h"
#include "base/values.h"
// This PrefStore keeps track of default preference values set when a
// preference is registered with the PrefService.
class BASE_PREFS_EXPORT DefaultPrefStore : public PrefStore {
public:
typedef PrefValueMap::const_iterator const_iterator;
DefaultPrefStore();
virtual bool GetValue(const std::string& key,
const base::Value** result) const OVERRIDE;
// Stores a new |value| for |key|. Assumes ownership of |value|.
void SetDefaultValue(const std::string& key, Value* value);
// Removes the value for |key|.
void RemoveDefaultValue(const std::string& key);
// Returns the registered type for |key| or Value::TYPE_NULL if the |key|
// has not been registered.
base::Value::Type GetType(const std::string& key) const;
const_iterator begin() const;
const_iterator end() const;
protected:
virtual ~DefaultPrefStore();
private:
PrefValueMap prefs_;
DISALLOW_COPY_AND_ASSIGN(DefaultPrefStore);
};
#endif // BASE_PREFS_DEFAULT_PREF_STORE_H_