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 CHROME_BROWSER_CHROMEOS_GEOLOCATION_SIMPLE_GEOLOCATION_PROVIDER_H_
6#define CHROME_BROWSER_CHROMEOS_GEOLOCATION_SIMPLE_GEOLOCATION_PROVIDER_H_
7
8#include "base/macros.h"
9#include "base/memory/ref_counted.h"
10#include "base/memory/scoped_vector.h"
11#include "base/threading/thread_checker.h"
12#include "base/time/time.h"
13#include "chrome/browser/chromeos/geolocation/simple_geolocation_request.h"
14#include "url/gurl.h"
15
16namespace net {
17class URLRequestContextGetter;
18}
19
20namespace chromeos {
21
22// This class implements Google Maps Geolocation API.
23//
24// SimpleGeolocationProvider must be created and used on the same thread.
25//
26// Note: this should probably be a singleton to monitor requests rate.
27// But as it is used only diring ChromeOS Out-of-Box, it can be owned by
28// WizardController for now.
29class SimpleGeolocationProvider {
30 public:
31  SimpleGeolocationProvider(net::URLRequestContextGetter* url_context_getter,
32                            const GURL& url);
33  virtual ~SimpleGeolocationProvider();
34
35  // Initiates new request (See SimpleGeolocationRequest for parameters
36  // description.)
37  void RequestGeolocation(base::TimeDelta timeout,
38                          SimpleGeolocationRequest::ResponseCallback callback);
39
40  // Returns default geolocation service URL.
41  static GURL DefaultGeolocationProviderURL();
42
43 private:
44  friend class TestGeolocationAPIURLFetcherCallback;
45
46  // Geolocation response callback. Deletes request from requests_.
47  void OnGeolocationResponse(
48      SimpleGeolocationRequest* request,
49      SimpleGeolocationRequest::ResponseCallback callback,
50      const Geoposition& geoposition,
51      bool server_error,
52      const base::TimeDelta elapsed);
53
54  scoped_refptr<net::URLRequestContextGetter> url_context_getter_;
55
56  // URL of the Google Maps Geolocation API.
57  const GURL url_;
58
59  // Requests in progress.
60  // SimpleGeolocationProvider owns all requests, so this vector is deleted on
61  // destroy.
62  ScopedVector<SimpleGeolocationRequest> requests_;
63
64  // Creation and destruction should happen on the same thread.
65  base::ThreadChecker thread_checker_;
66
67  DISALLOW_COPY_AND_ASSIGN(SimpleGeolocationProvider);
68};
69
70}  // namespace chromeos
71
72#endif  // CHROME_BROWSER_CHROMEOS_GEOLOCATION_SIMPLE_GEOLOCATION_PROVIDER_H_
73