third_party/libaddressinput/chromium/chrome_metadata_source.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_METADATA_SOURCE_H_
   6 #define THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_METADATA_SOURCE_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/memory/scoped_vector.h"
  12 #include "net/url_request/url_fetcher_delegate.h"
  13 #include "third_party/libaddressinput/src/cpp/include/libaddressinput/source.h"
  14
  15 namespace net {
  16 class URLFetcher;
  17 class URLRequestContextGetter;
  18 }
  19
  20 namespace autofill {
  21
  22 // A class for downloading rules to let libaddressinput validate international
  23 // addresses.
  24 class ChromeMetadataSource : public ::i18n::addressinput::Source,
  25                              public net::URLFetcherDelegate {
  26  public:
  27   ChromeMetadataSource(const std::string& validation_data_url,
  28                        net::URLRequestContextGetter* getter);
  29   virtual ~ChromeMetadataSource();
  30
  31   // ::i18n::addressinput::Source:
  32   virtual void Get(const std::string& key,
  33                    const Callback& downloaded) const override;
  34
  35   // net::URLFetcherDelegate:
  36   virtual void OnURLFetchComplete(const net::URLFetcher* source) override;
  37
  38  private:
  39   struct Request {
  40     Request(const std::string& key,
  41             scoped_ptr<net::URLFetcher> fetcher,
  42             const Callback& callback);
  43
  44     std::string key;
  45     // The data that's received.
  46     std::string data;
  47     // The object that manages retrieving the data.
  48     scoped_ptr<net::URLFetcher> fetcher;
  49     const Callback& callback;
  50   };
  51
  52   // Non-const method actually implementing Get().
  53   void Download(const std::string& key, const Callback& downloaded);
  54
  55   const std::string validation_data_url_;
  56   net::URLRequestContextGetter* const getter_;  // weak
  57
  58   // Maps from active URL fetcher to request metadata. The value is owned.
  59   std::map<const net::URLFetcher*, Request*> requests_;
  60
  61   DISALLOW_COPY_AND_ASSIGN(ChromeMetadataSource);
  62 };
  63
  64 }  // namespace autofill
  65
  66 #endif  // THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_CHROME_METADATA_SOURCE_H_