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
16namespace net {
17class URLFetcher;
18class URLRequestContextGetter;
19}
20
21namespace content {
22struct 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.
26class 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
52  bool is_request_pending() const { return url_fetcher_ != NULL; }
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 location_response_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 wifi_data_timestamp_;
68
69  // The start time for the request.
70  base::TimeTicks request_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