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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 CHROME_BROWSER_VALUE_STORE_POLICY_VALUE_STORE_H_
#define CHROME_BROWSER_VALUE_STORE_POLICY_VALUE_STORE_H_
#include "base/compiler_specific.h"
#include "chrome/browser/policy/policy_map.h"
#include "chrome/browser/value_store/value_store.h"
// A value store that pulls values from the given PolicyMap. Thie is a read-only
// ValueStore, and all the write operations fail.
class PolicyValueStore : public ValueStore {
public:
// The values provided by this value store are pulled from the given
// |policy_map|, which must outlive this object.
explicit PolicyValueStore(const policy::PolicyMap* policy_map);
virtual ~PolicyValueStore();
// ValueStore implementation.
virtual size_t GetBytesInUse(const std::string& key) OVERRIDE;
virtual size_t GetBytesInUse(const std::vector<std::string>& keys) OVERRIDE;
virtual size_t GetBytesInUse() OVERRIDE;
virtual ReadResult Get(const std::string& key) OVERRIDE;
virtual ReadResult Get(const std::vector<std::string>& keys) OVERRIDE;
virtual ReadResult Get() OVERRIDE;
virtual WriteResult Set(
WriteOptions options,
const std::string& key,
const base::Value& value) OVERRIDE;
virtual WriteResult Set(
WriteOptions options, const base::DictionaryValue& values) OVERRIDE;
virtual WriteResult Remove(const std::string& key) OVERRIDE;
virtual WriteResult Remove(const std::vector<std::string>& keys) OVERRIDE;
virtual WriteResult Clear() OVERRIDE;
private:
void AddEntryIfMandatory(base::DictionaryValue* result,
const std::string& key,
const policy::PolicyMap::Entry* entry);
const policy::PolicyMap* policy_map_;
DISALLOW_COPY_AND_ASSIGN(PolicyValueStore);
};
#endif // CHROME_BROWSER_VALUE_STORE_POLICY_VALUE_STORE_H_
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