blob: db622e7b4b614f0663caef81f83011fe2c0627a8 [file] [log] [blame]
/*
* Copyright 2010 Apple Inc. All rights reserved.
* Copyright (C) 2012 Samsung Electronics. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "modules/device_orientation/DeviceMotionController.h"
#include "RuntimeEnabledFeatures.h"
#include "core/dom/Document.h"
#include "core/events/ThreadLocalEventNames.h"
#include "core/page/Page.h"
#include "modules/device_orientation/DeviceMotionData.h"
#include "modules/device_orientation/DeviceMotionDispatcher.h"
#include "modules/device_orientation/DeviceMotionEvent.h"
namespace WebCore {
DeviceMotionController::DeviceMotionController(Document* document)
: DeviceSensorEventController(document)
, DOMWindowLifecycleObserver(document->domWindow())
, PageLifecycleObserver(document->page())
, m_hasEventListener(false)
{
}
DeviceMotionController::~DeviceMotionController()
{
}
void DeviceMotionController::didChangeDeviceMotion(DeviceMotionData* deviceMotionData)
{
dispatchDeviceEvent(DeviceMotionEvent::create(EventTypeNames::devicemotion, deviceMotionData));
}
const char* DeviceMotionController::supplementName()
{
return "DeviceMotionController";
}
DeviceMotionController* DeviceMotionController::from(Document* document)
{
DeviceMotionController* controller = static_cast<DeviceMotionController*>(DocumentSupplement::from(document, supplementName()));
if (!controller) {
controller = new DeviceMotionController(document);
DocumentSupplement::provideTo(document, supplementName(), adoptPtr(controller));
}
return controller;
}
bool DeviceMotionController::hasLastData()
{
return DeviceMotionDispatcher::instance().latestDeviceMotionData();
}
PassRefPtr<Event> DeviceMotionController::getLastEvent()
{
return DeviceMotionEvent::create(EventTypeNames::devicemotion, DeviceMotionDispatcher::instance().latestDeviceMotionData());
}
void DeviceMotionController::registerWithDispatcher()
{
DeviceMotionDispatcher::instance().addDeviceMotionController(this);
}
void DeviceMotionController::unregisterWithDispatcher()
{
DeviceMotionDispatcher::instance().removeDeviceMotionController(this);
}
bool DeviceMotionController::isNullEvent(Event* event)
{
DeviceMotionEvent* motionEvent = toDeviceMotionEvent(event);
return !motionEvent->deviceMotionData()->canProvideEventData();
}
void DeviceMotionController::didAddEventListener(DOMWindow*, const AtomicString& eventType)
{
if (eventType == EventTypeNames::devicemotion && RuntimeEnabledFeatures::deviceMotionEnabled()) {
if (page() && page()->visibilityState() == PageVisibilityStateVisible)
startUpdating();
m_hasEventListener = true;
}
}
void DeviceMotionController::didRemoveEventListener(DOMWindow*, const AtomicString& eventType)
{
if (eventType == EventTypeNames::devicemotion) {
stopUpdating();
m_hasEventListener = false;
}
}
void DeviceMotionController::didRemoveAllEventListeners(DOMWindow*)
{
stopUpdating();
m_hasEventListener = false;
}
void DeviceMotionController::pageVisibilityChanged()
{
if (!m_hasEventListener)
return;
if (page()->visibilityState() == PageVisibilityStateVisible)
startUpdating();
else
stopUpdating();
}
} // namespace WebCore