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      1 /*
      2  * Copyright 2010 Apple Inc. All rights reserved.
      3  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *  * Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *  * Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 #include "modules/device_orientation/NewDeviceOrientationController.h"
     29 
     30 #include "core/dom/Document.h"
     31 #include "modules/device_orientation/DeviceOrientationData.h"
     32 #include "modules/device_orientation/DeviceOrientationDispatcher.h"
     33 #include "modules/device_orientation/DeviceOrientationEvent.h"
     34 
     35 namespace WebCore {
     36 
     37 NewDeviceOrientationController::NewDeviceOrientationController(Document* document)
     38     : DeviceSensorEventController(document)
     39 {
     40 }
     41 
     42 NewDeviceOrientationController::~NewDeviceOrientationController()
     43 {
     44 }
     45 
     46 void NewDeviceOrientationController::didChangeDeviceOrientation(DeviceOrientationData* deviceOrientationData)
     47 {
     48     dispatchDeviceEvent(DeviceOrientationEvent::create(eventNames().deviceorientationEvent, deviceOrientationData));
     49 }
     50 
     51 const char* NewDeviceOrientationController::supplementName()
     52 {
     53     return "NewDeviceOrientationController";
     54 }
     55 
     56 NewDeviceOrientationController* NewDeviceOrientationController::from(Document* document)
     57 {
     58     NewDeviceOrientationController* controller = static_cast<NewDeviceOrientationController*>(Supplement<ScriptExecutionContext>::from(document, supplementName()));
     59     if (!controller) {
     60         controller = new NewDeviceOrientationController(document);
     61         Supplement<ScriptExecutionContext>::provideTo(document, supplementName(), adoptPtr(controller));
     62     }
     63     return controller;
     64 }
     65 
     66 bool NewDeviceOrientationController::hasLastData()
     67 {
     68     return DeviceOrientationDispatcher::instance().latestDeviceOrientationData();
     69 }
     70 
     71 PassRefPtr<Event> NewDeviceOrientationController::getLastEvent()
     72 {
     73     return DeviceOrientationEvent::create(eventNames().deviceorientationEvent,
     74         DeviceOrientationDispatcher::instance().latestDeviceOrientationData());
     75 }
     76 
     77 void NewDeviceOrientationController::registerWithDispatcher()
     78 {
     79     DeviceOrientationDispatcher::instance().addDeviceOrientationController(this);
     80 }
     81 
     82 void NewDeviceOrientationController::unregisterWithDispatcher()
     83 {
     84     DeviceOrientationDispatcher::instance().removeDeviceOrientationController(this);
     85 }
     86 
     87 bool NewDeviceOrientationController::isNullEvent(Event* event)
     88 {
     89     ASSERT(event->type() == eventNames().deviceorientationEvent);
     90     DeviceOrientationEvent* orientationEvent = static_cast<DeviceOrientationEvent*>(event);
     91     return !orientationEvent->orientation()->canProvideEventData();
     92 }
     93 
     94 } // namespace WebCore
     95