| // 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 |