third_party/WebKit/Source/modules/sensor/SensorProviderProxy.h

// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SensorProviderProxy_h
#define SensorProviderProxy_h

#include "core/frame/LocalFrame.h"
#include "device/generic_sensor/public/interfaces/sensor.mojom-blink.h"
#include "device/generic_sensor/public/interfaces/sensor_provider.mojom-blink.h"
#include "platform/Supplementable.h"
#include "platform/heap/Handle.h"

namespace blink {

class SensorProxy;

// This class wraps 'SensorProvider' mojo interface and it manages
// 'SensorProxy' instances.
class SensorProviderProxy final
    : public GarbageCollectedFinalized<SensorProviderProxy>
    , public Supplement<LocalFrame> {
    USING_GARBAGE_COLLECTED_MIXIN(SensorProviderProxy);
    WTF_MAKE_NONCOPYABLE(SensorProviderProxy);
public:
    static SensorProviderProxy* from(LocalFrame*);

    ~SensorProviderProxy();

    SensorProxy* getOrCreateSensor(device::mojom::blink::SensorType);

    DECLARE_VIRTUAL_TRACE();

private:
    friend class SensorProxy; // To call sensorProvider().

    explicit SensorProviderProxy(LocalFrame*);
    static const char* supplementName();

    device::mojom::blink::SensorProvider* sensorProvider() const { return m_sensorProvider.get(); }

    void onSensorProviderConnectionError();

    using SensorsSet = HeapHashSet<WeakMember<SensorProxy>>;
    SensorsSet m_sensors;

    device::mojom::blink::SensorProviderPtr m_sensorProvider;
};

} // namespace blink

#endif // SensorProviderProxy_h