Generic Sensor API : Ambient Light Sensor API.

third_party/WebKit/Source/modules/sensor/Sensor.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/Sensor.h"
+
+#include "bindings/core/v8/ScriptPromise.h"
+#include "bindings/core/v8/ScriptPromiseResolver.h"
+#include "core/dom/DOMException.h"
+#include "core/dom/ExceptionCode.h"
+#include "modules/sensor/SensorReading.h"
+
+namespace blink {
+
+Sensor::~Sensor()
+{
+}
+
+Sensor::Sensor(ExecutionContext* executionContext, const SensorOptions& sensorOptions)
+    : ActiveScriptWrappable(this)
+    , ActiveDOMObject(executionContext)
+    , m_sensorState(SensorState::Idle)
+{
+}
+
+// Getters
+String Sensor::state()
+{
+    switch (m_sensorState) {
+    case SensorState::Idle:
+        return "idle";
+    case SensorState::Activating:
+        return "activating";
+    case SensorState::Active:
+        return "active";
+    case SensorState::Errored:
+        return "errored";
+    }
+    ASSERT_NOT_REACHED();
+    return "idle";
+}
+
+SensorReading& Sensor::reading()
+{
+    return *m_sensorReading.get();
+}
+
+void Sensor::updateState(SensorState newState)
+{
+}
+
+void Sensor::suspend()
+{
+}
+
+void Sensor::resume()
+{
+}
+
+void Sensor::stop()
+{
+}
+
+bool Sensor::hasPendingActivity() const
+{
+    return false;
+}
+
+DEFINE_TRACE(Sensor)
+{
+    ActiveDOMObject::trace(visitor);
+    EventTargetWithInlineData::trace(visitor);
+    visitor->trace(m_sensorReading);
+}
+
+} // namespace blink