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// Copyright 2014 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 "config.h"
#include "modules/device_orientation/DeviceOrientationController.h"
#include "core/dom/Document.h"
#include "modules/EventModules.h"
#include "modules/device_orientation/DeviceOrientationData.h"
#include "modules/device_orientation/DeviceOrientationDispatcher.h"
#include "modules/device_orientation/DeviceOrientationEvent.h"
namespace WebCore {
DeviceOrientationController::DeviceOrientationController(Document& document)
: DeviceSingleWindowEventController(document)
{
}
DeviceOrientationController::~DeviceOrientationController()
{
stopUpdating();
}
void DeviceOrientationController::didUpdateData()
{
if (m_overrideOrientationData)
return;
dispatchDeviceEvent(lastEvent());
}
const char* DeviceOrientationController::supplementName()
{
return "DeviceOrientationController";
}
DeviceOrientationController& DeviceOrientationController::from(Document& document)
{
DeviceOrientationController* controller = static_cast<DeviceOrientationController*>(DocumentSupplement::from(document, supplementName()));
if (!controller) {
controller = new DeviceOrientationController(document);
DocumentSupplement::provideTo(document, supplementName(), adoptPtrWillBeNoop(controller));
}
return *controller;
}
DeviceOrientationData* DeviceOrientationController::lastData() const
{
return m_overrideOrientationData ? m_overrideOrientationData.get() : DeviceOrientationDispatcher::instance().latestDeviceOrientationData();
}
bool DeviceOrientationController::hasLastData()
{
return lastData();
}
void DeviceOrientationController::registerWithDispatcher()
{
DeviceOrientationDispatcher::instance().addController(this);
}
void DeviceOrientationController::unregisterWithDispatcher()
{
DeviceOrientationDispatcher::instance().removeController(this);
}
PassRefPtrWillBeRawPtr<Event> DeviceOrientationController::lastEvent() const
{
return DeviceOrientationEvent::create(eventTypeName(), lastData());
}
bool DeviceOrientationController::isNullEvent(Event* event) const
{
DeviceOrientationEvent* orientationEvent = toDeviceOrientationEvent(event);
return !orientationEvent->orientation()->canProvideEventData();
}
const AtomicString& DeviceOrientationController::eventTypeName() const
{
return EventTypeNames::deviceorientation;
}
void DeviceOrientationController::setOverride(DeviceOrientationData* deviceOrientationData)
{
ASSERT(deviceOrientationData);
m_overrideOrientationData = deviceOrientationData;
dispatchDeviceEvent(lastEvent());
}
void DeviceOrientationController::clearOverride()
{
if (!m_overrideOrientationData)
return;
m_overrideOrientationData.clear();
if (lastData())
didUpdateData();
}
void DeviceOrientationController::trace(Visitor* visitor)
{
visitor->trace(m_overrideOrientationData);
DocumentSupplement::trace(visitor);
}
} // namespace WebCore
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