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1 // Copyright 2016 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 SensorProxy_h | |
6 #define SensorProxy_h | |
7 | |
8 #include "device/generic_sensor/public/interfaces/sensor.mojom-blink.h" | |
9 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom-blink.h" | |
10 #include "modules/ModulesExport.h" | |
11 #include "mojo/public/cpp/bindings/binding.h" | |
12 #include "platform/Supplementable.h" | |
13 #include "platform/heap/Handle.h" | |
14 | |
15 namespace blink { | |
16 | |
17 class SensorProviderProxy; | |
18 | |
19 // This class wraps 'Sensor' mojo interface and used by multiple | |
20 // JS sensor instances (within a single frame). | |
timvolodine
2016/08/25 17:52:33
sensor instances of the same type?
Mikhail
2016/08/26 16:42:42
yes (comment is updated in the latest patch)
| |
21 class MODULES_EXPORT SensorProxy final | |
22 : public GarbageCollectedFinalized<SensorProxy> | |
23 , public device::mojom::blink::SensorClient { | |
24 USING_PRE_FINALIZER(SensorProxy, dispose); | |
25 WTF_MAKE_NONCOPYABLE(SensorProxy); | |
26 public: | |
27 class Observer : public GarbageCollectedMixin { | |
28 public: | |
29 // Has valid 'Sensor' binding, add(remove)Configuration() | |
timvolodine
2016/08/25 17:52:33
nit: {add,remove}Configuration
Mikhail
2016/08/26 16:42:42
Done.
| |
30 // methods can be called. | |
31 virtual void onSensorInitialized() {} | |
32 // Platfrom sensort reading has changed (for 'ONCHANGE' reporting mode). | |
33 virtual void onSensorReadingChanged() {} | |
34 // An error has occurred. | |
35 virtual void onSensorError() {} | |
36 }; | |
37 | |
38 ~SensorProxy(); | |
39 | |
40 void dispose(); | |
41 | |
42 void addObserver(Observer*); | |
43 void removeObserver(Observer*); | |
44 | |
45 void initialize(); | |
46 | |
47 bool isInitializing() const { return m_state == Initializing; } | |
48 bool isInitialized() const { return m_state == Initialized; } | |
49 | |
50 void addConfiguration(device::mojom::blink::SensorConfigurationPtr, std::uni que_ptr<Function<void(bool)>>); | |
51 void removeConfiguration(device::mojom::blink::SensorConfigurationPtr, std:: unique_ptr<Function<void(bool)>>); | |
52 | |
53 void suspend(); | |
54 void resume(); | |
55 | |
56 device::mojom::blink::SensorType type() const { return m_type; } | |
57 device::mojom::blink::ReportingMode reportingMode() const { return m_mode; } | |
58 | |
59 template <typename Reading> | |
60 const Reading* reading() const | |
61 { | |
62 DCHECK(m_sharedBuffer); | |
63 static_assert(sizeof(Reading) == device::mojom::blink::SensorReadBuffer: :kReadBufferSize, "Check reading size"); | |
64 return static_cast<Reading*>(m_sharedBuffer.get()); | |
65 } | |
66 | |
67 DECLARE_VIRTUAL_TRACE(); | |
68 | |
69 private: | |
70 friend class SensorProviderProxy; | |
71 SensorProxy(device::mojom::blink::SensorType, SensorProviderProxy*); | |
72 | |
73 // device::mojom::blink::SensorClient overrides. | |
74 void RaiseError() override; | |
75 void SensorReadingChanged() override; | |
76 | |
77 void handleSensorError(); | |
78 | |
79 void onSensorCreated(device::mojom::blink::SensorReadBufferPtr, device::mojo m::blink::SensorClientRequest); | |
80 | |
81 device::mojom::blink::SensorType m_type; | |
82 device::mojom::blink::ReportingMode m_mode; | |
83 Member<SensorProviderProxy> m_provider; | |
84 using ObserversSet = HeapHashSet<WeakMember<Observer>>; | |
85 ObserversSet m_observers; | |
86 | |
87 device::mojom::blink::SensorPtr m_sensor; | |
88 mojo::Binding<device::mojom::blink::SensorClient> m_clientBinding; | |
89 enum State { | |
90 Uninitialized, | |
91 Initializing, | |
92 Initialized | |
93 }; | |
94 State m_state; | |
95 mojo::ScopedSharedBufferHandle m_sharedBufferHandle; | |
96 mojo::ScopedSharedBufferMapping m_sharedBuffer; | |
97 }; | |
98 | |
99 } // namespace blink | |
100 | |
101 #endif // SensorProxy_h | |
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