[sensors] Accelerometer sensor bindings implementation

third_party/WebKit/Source/modules/sensor/Accelerometer.cpp

+// 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.
+
+#include "modules/sensor/Accelerometer.h"
+
+#include "bindings/core/v8/ScriptPromise.h"
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "modules/sensor/AccelerometerReading.h"
+
+using device::mojom::blink::SensorType;
+
+namespace blink {
+
+Accelerometer* Accelerometer::create(ScriptState* scriptState,
+                                     const AccelerometerOptions& options,
+                                     ExceptionState& exceptionState) {
+  return new Accelerometer(scriptState, options, exceptionState);
+}
+
+// static
+Accelerometer* Accelerometer::create(ScriptState* scriptState,
+                                     ExceptionState& exceptionState) {
+  return create(scriptState, AccelerometerOptions(), exceptionState);
+}
+
+Accelerometer::Accelerometer(ScriptState* scriptState,
+                             const AccelerometerOptions& options,
+                             ExceptionState& exceptionState)
+    : Sensor(scriptState, options, exceptionState, SensorType::ACCELEROMETER),

[shalamov, 2016/11/02 14:25:14]

Sensor(scriptState, options, exceptionState, options.includeGravity() ?
SensorType::ACCELEROMETER : SensorType::LINEAR_ACCELERATION)

+      m_accelerometerOptions(options) {}
+
+AccelerometerReading* Accelerometer::reading() const {
+  return static_cast<AccelerometerReading*>(Sensor::reading());
+}
+
+bool Accelerometer::includesGravity() const {
+  return m_accelerometerOptions.includeGravity();
+}
+
+SensorReading* Accelerometer::createSensorReading(SensorProxy* proxy) {
+  return AccelerometerReading::create(proxy);
+}
+
+auto Accelerometer::createSensorConfig(const SensorOptions& options,
+                                       const SensorConfiguration& defaultConfig)
+    -> SensorConfigurationPtr {
+  auto result = device::mojom::blink::SensorConfiguration::New();
+  result->frequency =
+      options.hasFrequency() ? options.frequency() : defaultConfig.frequency;
+  return result;
+}
+
+DEFINE_TRACE(Accelerometer) {
+  Sensor::trace(visitor);
+}
+
+}  // namespace blink