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Side by Side Diff: device/geolocation/location_arbitrator.h

Issue 2249283003: Hooks together Geolocation Feature in the Client and Engine. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@lai
Patch Set: Addresses nyquist's #46 comments. Created 4 years, 3 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 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 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ 5 #ifndef DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_H_
6 #define DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ 6 #define DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_H_
7 7
8 #include <stdint.h> 8 #include <stdint.h>
9 #include <memory> 9 #include <memory>
10 #include <vector> 10 #include <vector>
11 11
12 #include "base/callback_forward.h" 12 #include "base/callback_forward.h"
13 #include "base/cancelable_callback.h" 13 #include "base/cancelable_callback.h"
14 #include "base/macros.h" 14 #include "base/macros.h"
15 #include "base/memory/scoped_vector.h" 15 #include "base/memory/scoped_vector.h"
16 #include "base/strings/string16.h" 16 #include "base/strings/string16.h"
(...skipping 10 matching lines...) Expand all
27 } 27 }
28 28
29 namespace device { 29 namespace device {
30 class AccessTokenStore; 30 class AccessTokenStore;
31 class GeolocationDelegate; 31 class GeolocationDelegate;
32 class LocationProvider; 32 class LocationProvider;
33 33
34 // This class is responsible for handling updates from multiple underlying 34 // This class is responsible for handling updates from multiple underlying
35 // providers and resolving them to a single 'best' location fix at any given 35 // providers and resolving them to a single 'best' location fix at any given
36 // moment. 36 // moment.
37 class DEVICE_GEOLOCATION_EXPORT LocationArbitratorImpl 37 class DEVICE_GEOLOCATION_EXPORT LocationArbitrator : public LocationProvider {
38 : public LocationProvider {
39 public: 38 public:
40 // Number of milliseconds newer a location provider has to be that it's worth 39 // Number of milliseconds newer a location provider has to be that it's worth
41 // switching to this location provider on the basis of it being fresher 40 // switching to this location provider on the basis of it being fresher
42 // (regardles of relative accuracy). Public for tests. 41 // (regardles of relative accuracy). Public for tests.
43 static const int64_t kFixStaleTimeoutMilliseconds; 42 static const int64_t kFixStaleTimeoutMilliseconds;
44 43
45 explicit LocationArbitratorImpl(GeolocationDelegate* delegate); 44 explicit LocationArbitrator(GeolocationDelegate* delegate);
46 ~LocationArbitratorImpl() override; 45 ~LocationArbitrator() override;
47 46
48 static GURL DefaultNetworkProviderURL(); 47 static GURL DefaultNetworkProviderURL();
49 bool HasPermissionBeenGrantedForTest() const; 48 bool HasPermissionBeenGrantedForTest() const;
50 49
51 // LocationProvider implementation. 50 // LocationProvider implementation.
52 void SetUpdateCallback( 51 void SetUpdateCallback(
53 const LocationProviderUpdateCallback& callback) override; 52 const LocationProviderUpdateCallback& callback) override;
54 bool StartProvider(bool enable_high_accuracy) override; 53 bool StartProvider(bool enable_high_accuracy) override;
55 void StopProvider() override; 54 void StopProvider() override;
56 const Geoposition& GetPosition() override; 55 const Geoposition& GetPosition() override;
(...skipping 52 matching lines...) Expand 10 before | Expand all | Expand 10 after
109 bool enable_high_accuracy_; 108 bool enable_high_accuracy_;
110 // The provider which supplied the current |position_| 109 // The provider which supplied the current |position_|
111 const LocationProvider* position_provider_; 110 const LocationProvider* position_provider_;
112 bool is_permission_granted_; 111 bool is_permission_granted_;
113 // The current best estimate of our position. 112 // The current best estimate of our position.
114 Geoposition position_; 113 Geoposition position_;
115 114
116 // Tracks whether providers should be running. 115 // Tracks whether providers should be running.
117 bool is_running_; 116 bool is_running_;
118 117
119 DISALLOW_COPY_AND_ASSIGN(LocationArbitratorImpl); 118 DISALLOW_COPY_AND_ASSIGN(LocationArbitrator);
120 }; 119 };
121 120
122 // Factory functions for the various types of location provider to abstract 121 // Factory functions for the various types of location provider to abstract
123 // over the platform-dependent implementations. 122 // over the platform-dependent implementations.
124 std::unique_ptr<LocationProvider> NewSystemLocationProvider(); 123 std::unique_ptr<LocationProvider> NewSystemLocationProvider();
125 124
126 } // namespace device 125 } // namespace device
127 126
128 #endif // DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_ 127 #endif // DEVICE_GEOLOCATION_LOCATION_ARBITRATOR_H_
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