1 // Copyright (c) 2012 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 CONTENT_BROWSER_GEOLOCATION_NETWORK_LOCATION_REQUEST_H_ 6 #define CONTENT_BROWSER_GEOLOCATION_NETWORK_LOCATION_REQUEST_H_ 7 8 #include "base/basictypes.h" 9 #include "base/memory/ref_counted.h" 10 #include "base/memory/scoped_ptr.h" 11 #include "content/browser/geolocation/wifi_data_provider.h" 12 #include "content/common/content_export.h" 13 #include "net/url_request/url_fetcher_delegate.h" 14 #include "url/gurl.h" 15 16 namespace net { 17 class URLFetcher; 18 class URLRequestContextGetter; 19 } 20 21 namespace content { 22 struct Geoposition; 23 24 // Takes wifi data and sends it to a server to get a position fix. 25 // It performs formatting of the request and interpretation of the response. 26 class NetworkLocationRequest : private net::URLFetcherDelegate { 27 public: 28 // ID passed to URLFetcher::Create(). Used for testing. 29 CONTENT_EXPORT static int url_fetcher_id_for_tests; 30 31 // Called when a new geo position is available. The second argument indicates 32 // whether there was a server error or not. It is true when there was a 33 // server or network error - either no response or a 500 error code. 34 typedef base::Callback<void(const Geoposition& /* position */, 35 bool /* server_error */, 36 const base::string16& /* access_token */, 37 const WifiData& /* wifi_data */)> 38 LocationResponseCallback; 39 40 // |url| is the server address to which the request wil be sent. 41 NetworkLocationRequest(net::URLRequestContextGetter* context, 42 const GURL& url, 43 LocationResponseCallback callback); 44 virtual ~NetworkLocationRequest(); 45 46 // Makes a new request. Returns true if the new request was successfully 47 // started. In all cases, any currently pending request will be canceled. 48 bool MakeRequest(const base::string16& access_token, 49 const WifiData& wifi_data, 50 const base::Time& timestamp); 51 is_request_pending()52 bool is_request_pending() const { return url_fetcher_ != NULL; } url()53 const GURL& url() const { return url_; } 54 55 private: 56 // net::URLFetcherDelegate 57 virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE; 58 59 scoped_refptr<net::URLRequestContextGetter> url_context_; 60 LocationResponseCallback callback_; 61 const GURL url_; 62 scoped_ptr<net::URLFetcher> url_fetcher_; 63 64 // Keep a copy of the data sent in the request, so we can refer back to it 65 // when the response arrives. 66 WifiData wifi_data_; 67 base::Time timestamp_; // Timestamp of the above data, not of the request. 68 69 // The start time for the request. 70 base::TimeTicks start_time_; 71 72 DISALLOW_COPY_AND_ASSIGN(NetworkLocationRequest); 73 }; 74 75 } // namespace content 76 77 #endif // CONTENT_BROWSER_GEOLOCATION_NETWORK_LOCATION_REQUEST_H_ 78