third_party/WebKit/Source/modules/device_orientation/DeviceOrientationDispatcher.cpp

/*
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#include "modules/device_orientation/DeviceOrientationDispatcher.h"

#include "modules/device_orientation/DeviceOrientationController.h"
#include "modules/device_orientation/DeviceOrientationData.h"
#include "public/platform/Platform.h"

namespace blink {

DeviceOrientationDispatcher& DeviceOrientationDispatcher::Instance(
    bool absolute) {
  if (absolute) {
    DEFINE_STATIC_LOCAL(DeviceOrientationDispatcher,
                        device_orientation_absolute_dispatcher,
                        (new DeviceOrientationDispatcher(absolute)));
    return device_orientation_absolute_dispatcher;
  }
  DEFINE_STATIC_LOCAL(DeviceOrientationDispatcher,
                      device_orientation_dispatcher,
                      (new DeviceOrientationDispatcher(absolute)));
  return device_orientation_dispatcher;
}

DeviceOrientationDispatcher::DeviceOrientationDispatcher(bool absolute)
    : absolute_(absolute) {}

DeviceOrientationDispatcher::~DeviceOrientationDispatcher() {}

void DeviceOrientationDispatcher::Trace(blink::Visitor* visitor) {
  visitor->Trace(last_device_orientation_data_);
  PlatformEventDispatcher::Trace(visitor);
}

void DeviceOrientationDispatcher::StartListening() {
  Platform::Current()->StartListening(GetWebPlatformEventType(), this);
}

void DeviceOrientationDispatcher::StopListening() {
  Platform::Current()->StopListening(GetWebPlatformEventType());
  last_device_orientation_data_.Clear();
}

void DeviceOrientationDispatcher::DidChangeDeviceOrientation(
    const device::OrientationData& motion) {
  last_device_orientation_data_ = DeviceOrientationData::Create(motion);
  NotifyControllers();
}

DeviceOrientationData*
DeviceOrientationDispatcher::LatestDeviceOrientationData() {
  return last_device_orientation_data_.Get();
}

WebPlatformEventType DeviceOrientationDispatcher::GetWebPlatformEventType()
    const {
  return (absolute_) ? kWebPlatformEventTypeDeviceOrientationAbsolute
                     : kWebPlatformEventTypeDeviceOrientation;
}

}  // namespace blink