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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 SensorProviderProxy_h |
| 6 #define SensorProviderProxy_h |
| 7 |
| 8 #include "core/page/PageVisibilityObserver.h" |
| 9 #include "device/generic_sensor/public/interfaces/sensor.mojom-blink.h" |
| 10 #include "device/generic_sensor/public/interfaces/sensor_provider.mojom-blink.h" |
| 11 #include "modules/ModulesExport.h" |
| 12 #include "platform/Supplementable.h" |
| 13 #include "platform/heap/Handle.h" |
| 14 |
| 15 namespace blink { |
| 16 |
| 17 class LocalFrame; |
| 18 class SensorProxy; |
| 19 |
| 20 // This class wraps 'SensorProvider' mojo interface and it manages |
| 21 // 'SensorProxy' instances. It's created lazily for a frame and deleted if: |
| 22 // - the frame is deleted |
| 23 // - there are no left SensorProxies (i.e. there are no active Sensor |
| 24 // instances within the frame). |
| 25 // - a fatal error has occured (mojo IPC channel got broken) |
| 26 class MODULES_EXPORT SensorProviderProxy final |
| 27 : public GarbageCollectedFinalized<SensorProviderProxy> |
| 28 , public Supplement<LocalFrame> |
| 29 , public PageVisibilityObserver { |
| 30 USING_GARBAGE_COLLECTED_MIXIN(SensorProviderProxy); |
| 31 WTF_MAKE_NONCOPYABLE(SensorProviderProxy); |
| 32 public: |
| 33 static SensorProviderProxy* getOrCreateForFrame(LocalFrame*); |
| 34 |
| 35 ~SensorProviderProxy(); |
| 36 |
| 37 SensorProxy* getOrCreateSensor(device::mojom::blink::SensorType); |
| 38 |
| 39 DECLARE_VIRTUAL_TRACE(); |
| 40 |
| 41 private: |
| 42 explicit SensorProviderProxy(LocalFrame*); |
| 43 |
| 44 // PageVisibilityObserver overrides. |
| 45 void pageVisibilityChanged() override; |
| 46 |
| 47 // To be called by SensorProxy. |
| 48 void removeSensor(SensorProxy*); |
| 49 device::mojom::blink::SensorProvider* sensorProvider() const { return m_sens
orProvider.get(); } |
| 50 friend class SensorProxy; |
| 51 |
| 52 void handleSensorError(); |
| 53 |
| 54 using SensorsSet = HeapHashSet<Member<SensorProxy>>; |
| 55 SensorsSet m_sensors; |
| 56 static const char s_supplementKey[]; |
| 57 |
| 58 WeakMember<LocalFrame> m_frame; |
| 59 |
| 60 device::mojom::blink::SensorProviderPtr m_sensorProvider; |
| 61 }; |
| 62 |
| 63 } // namespace blink |
| 64 |
| 65 #endif // SensorProviderProxy_h |
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