| // Copyright (C) 2014 Google Inc. |
| // |
| // 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 I18N_ADDRESSINPUT_ONDEMAND_SUPPLY_TASK_H_ |
| #define I18N_ADDRESSINPUT_ONDEMAND_SUPPLY_TASK_H_ |
| |
| #include <libaddressinput/supplier.h> |
| #include <libaddressinput/util/basictypes.h> |
| |
| #include <map> |
| #include <memory> |
| #include <set> |
| #include <string> |
| |
| #include "retriever.h" |
| |
| namespace i18n { |
| namespace addressinput { |
| |
| class LookupKey; |
| class Rule; |
| |
| // An OndemandSupplyTask object encapsulates the information necessary to |
| // retrieve the set of Rule objects corresponding to a LookupKey and call a |
| // callback when that has been done. Calling the Retrieve() method will load |
| // required metadata, then call the callback and delete the OndemandSupplyTask |
| // object itself. |
| class OndemandSupplyTask { |
| public: |
| OndemandSupplyTask(const LookupKey& lookup_key, |
| std::map<std::string, const Rule*>* rules, |
| const Supplier::Callback& supplied); |
| ~OndemandSupplyTask(); |
| |
| // Adds lookup key string |key| to the queue of data to be retrieved. |
| void Queue(const std::string& key); |
| |
| // Retrieves and parses data for all queued keys, then calls |supplied_|. |
| void Retrieve(const Retriever& retriever); |
| |
| Supplier::RuleHierarchy hierarchy_; |
| |
| private: |
| void Load(bool success, const std::string& key, const std::string& data); |
| void Loaded(); |
| |
| std::set<std::string> pending_; |
| const LookupKey& lookup_key_; |
| std::map<std::string, const Rule*>* const rule_cache_; |
| const Supplier::Callback& supplied_; |
| const std::unique_ptr<const Retriever::Callback> retrieved_; |
| bool success_; |
| |
| DISALLOW_COPY_AND_ASSIGN(OndemandSupplyTask); |
| }; |
| |
| } // namespace addressinput |
| } // namespace i18n |
| |
| #endif // I18N_ADDRESSINPUT_ONDEMAND_SUPPLY_TASK_H_ |