| // Copyright 2015 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef COBALT_DOM_STORAGE_AREA_H_ |
| #define COBALT_DOM_STORAGE_AREA_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "base/containers/hash_tables.h" |
| #include "base/optional.h" |
| #include "base/synchronization/waitable_event.h" |
| #include "cobalt/loader/origin.h" |
| #include "url/gurl.h" |
| |
| namespace cobalt { |
| namespace dom { |
| class LocalStorageDatabase; |
| class Storage; |
| |
| // StorageArea objects will be constructed and owned by dom::Storage. |
| // Maintains a hash table of key/value data for a given origin, as specified |
| // by the Storage node. |
| class StorageArea { |
| public: |
| typedef base::hash_map<std::string, std::string> StorageMap; |
| |
| // storage_node is the DOM node that owns this storage area. |
| // db_interface is either NULL for SessionStorage, or a pointer to a |
| // LocalStorageDatabase for LocalStorage. |
| StorageArea(Storage* storage_node, LocalStorageDatabase* db_interface); |
| ~StorageArea(); |
| |
| int length(); |
| base::Optional<std::string> Key(int index); |
| base::Optional<std::string> GetItem(const std::string& key); |
| void SetItem(const std::string& key, const std::string& value); |
| void RemoveItem(const std::string& key); |
| void Clear(); |
| |
| bool key_exists(const std::string& key_name); |
| int size_bytes() const { return size_bytes_; } |
| Storage* storage_node() const { return storage_node_; } |
| const loader::Origin& origin() const { return origin_; } |
| |
| private: |
| void Init(); |
| void OnInitComplete(std::unique_ptr<StorageMap> data); |
| |
| std::unique_ptr<StorageMap> storage_map_; |
| |
| loader::Origin origin_; |
| base::WaitableEvent read_event_; |
| Storage* storage_node_; |
| int size_bytes_; |
| LocalStorageDatabase* db_interface_; |
| bool initialized_; |
| |
| DISALLOW_COPY_AND_ASSIGN(StorageArea); |
| }; |
| |
| } // namespace dom |
| } // namespace cobalt |
| |
| #endif // COBALT_DOM_STORAGE_AREA_H_ |