| // 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_EXTENSIONS_API_STORAGE_POLICY_VALUE_STORE_H_ |
| #define CHROME_BROWSER_EXTENSIONS_API_STORAGE_POLICY_VALUE_STORE_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "chrome/browser/extensions/api/storage/settings_observer.h" |
| #include "chrome/browser/value_store/value_store.h" |
| |
| namespace policy { |
| class PolicyMap; |
| } |
| |
| namespace extensions { |
| |
| // A ValueStore that is backed by another, persistent ValueStore, and stores |
| // the policies for a specific extension there. This ValueStore is used to |
| // run the function of the storage.managed namespace; it's read-only for the |
| // extension. The ManagedValueStoreCache sends updated policy to this store |
| // and manages its lifetime. |
| class PolicyValueStore : public ValueStore { |
| public: |
| PolicyValueStore(const std::string& extension_id, |
| const scoped_refptr<SettingsObserverList>& observers, |
| scoped_ptr<ValueStore> delegate); |
| virtual ~PolicyValueStore(); |
| |
| // Stores |policy| in the persistent database represented by the |delegate_|. |
| // If |notify_if_changed| and |policy| differs from the previously persisted |
| // version, then a notification is sent to the |observers_| with a list of the |
| // changes detected. |
| void SetCurrentPolicy(const policy::PolicyMap& policy, |
| bool notify_if_changed); |
| |
| // Clears all the stored data and deletes the database. |
| void DeleteStorage(); |
| |
| // 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; |
| |
| // For unit tests. |
| ValueStore* delegate() { return delegate_.get(); } |
| |
| private: |
| std::string extension_id_; |
| scoped_refptr<SettingsObserverList> observers_; |
| scoped_ptr<ValueStore> delegate_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PolicyValueStore); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_API_STORAGE_POLICY_VALUE_STORE_H_ |