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// 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 <memory>
#include <string>
namespace i18n {
namespace addressinput {
class Retriever;
class Rule;
// Retrieves validation rules. Sample usage:
// const Retriever* retriever = ...
// RuleRetriever rules(retriever);
// const std::unique_ptr<const RuleRetriever::Callback> rule_ready(
// BuildCallback(this, &MyClass::OnRuleReady));
// rules.RetrieveRule("data/CA/AB--fr", *rule_ready);
class RuleRetriever {
public:
typedef i18n::addressinput::Callback<const std::string&,
const Rule&> Callback;
RuleRetriever(const RuleRetriever&) = delete;
RuleRetriever& operator=(const RuleRetriever&) = delete;
// 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:
std::unique_ptr<const Retriever> data_retriever_;
};
} // namespace addressinput
} // namespace i18n
#endif // I18N_ADDRESSINPUT_RULE_RETRIEVER_H_