// 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.
//
// The interface to be implemented by the user of the library to enable
// downloading validation rules from a server.
#ifndef I18N_ADDRESSINPUT_DOWNLOADER_H_
#define I18N_ADDRESSINPUT_DOWNLOADER_H_
#include <libaddressinput/callback.h>
#include <libaddressinput/util/scoped_ptr.h>
#include <string>
namespace i18n {
namespace addressinput {
// Downloads validation rules from the server. Sample usage:
// class MyDownloader : public Downloader {
// public:
// virtual void Download(const std::string& url,
// scoped_ptr<Callback> downloaded) const {
// bool success = ...
// std::string data = ...
// (*downloaded)(success, url, data);
// }
// };
class Downloader {
public:
typedef i18n::addressinput::ScopedPtrCallback<void(std::string, std::string)>
Callback;
virtual ~Downloader() {}
// Downloads |url| and invokes the |downloaded| callback.
virtual void Download(const std::string& url,
scoped_ptr<Callback> downloaded) = 0;
};
} // namespace addressinput
} // namespace i18n
#endif // I18N_ADDRESSINPUT_DOWNLOADER_H_