[rAc - libaddressinput] Chrome download impl

third_party/libaddressinput/chromium/chrome_downloader_impl.h

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_DOWNLOADER_IMPL_H_
+#define THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_DOWNLOADER_IMPL_H_
+
+#include <map>
+#include <string>
+
+#include "base/memory/scoped_vector.h"
+#include "net/url_request/url_fetcher_delegate.h"
+#include "third_party/libaddressinput/chromium/cpp/include/libaddressinput/downloader.h"
+
+namespace net {
+class URLFetcher;
+class URLRequestContextGetter;
+}
+
+// A class for downloading rules to let libaddressinput validate international
+// addresses.
+class ChromeDownloaderImpl : public i18n::addressinput::Downloader,
+                             public net::URLFetcherDelegate {
+ public:
+  explicit ChromeDownloaderImpl(net::URLRequestContextGetter* getter);
+  virtual ~ChromeDownloaderImpl();
+
+  // i18n::addressinput::Downloader:
+  virtual void Download(const std::string& url,
+                        scoped_ptr<Callback> downloaded) OVERRIDE;
+
+  // net::URLFetcherDelegate:
+  virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
+
+ private:
+  struct Request {
+    Request(const std::string& url, scoped_ptr<Callback> callback);
+
+    std::string url;
+    scoped_ptr<Callback> callback;
+  };
+
+  net::URLRequestContextGetter* const getter_;  // weak
+
+  // Maps from active url fetcher to request metadata. Both the key and value
+  // are owned.
+  std::map<const net::URLFetcher*, Request*> requests_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeDownloaderImpl);
+};
+
+#endif  // THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_DOWNLOADER_IMPL_H_