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      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_
     67