| // Copyright (C) 2013 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. |
| // |
| // An object to retrieve validation rules. |
| |
| #ifndef I18N_ADDRESSINPUT_RULE_RETRIEVER_H_ |
| #define I18N_ADDRESSINPUT_RULE_RETRIEVER_H_ |
| |
| #include <libaddressinput/callback.h> |
| #include <libaddressinput/util/basictypes.h> |
| #include <libaddressinput/util/scoped_ptr.h> |
| |
| #include <string> |
| |
| namespace i18n { |
| namespace addressinput { |
| |
| class Retriever; |
| class Rule; |
| |
| // Retrieves validation rules. Sample usage: |
| // const Retriever* retriever = ... |
| // RuleRetriever rules(retriever); |
| // scoped_ptr<RuleRetriever::Callback> rule_ready(BuildCallback( |
| // this, &MyClass::OnRuleReady)); |
| // rules.RetrieveRule("data/CA/AB--fr", *rule_ready); |
| class RuleRetriever { |
| public: |
| typedef i18n::addressinput::Callback<std::string, Rule> Callback; |
| |
| // Takes ownership of |retriever|. |
| explicit RuleRetriever(const Retriever* retriever); |
| ~RuleRetriever(); |
| |
| // Retrieves the rule for |key| and invokes the |rule_ready| callback. |
| void RetrieveRule(const std::string& key, const Callback& rule_ready) const; |
| |
| private: |
| scoped_ptr<const Retriever> data_retriever_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RuleRetriever); |
| }; |
| |
| } // namespace addressinput |
| } // namespace i18n |
| |
| #endif // I18N_ADDRESSINPUT_RULE_RETRIEVER_H_ |