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      1 /*
      2  * Copyright (C) 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "modules/device_orientation/DeviceMotionEvent.h"
     28 
     29 #include "modules/device_orientation/DeviceAcceleration.h"
     30 #include "modules/device_orientation/DeviceMotionData.h"
     31 #include "modules/device_orientation/DeviceRotationRate.h"
     32 #include "core/dom/EventNames.h"
     33 
     34 namespace WebCore {
     35 
     36 DeviceMotionEvent::~DeviceMotionEvent()
     37 {
     38 }
     39 
     40 DeviceMotionEvent::DeviceMotionEvent()
     41     : m_deviceMotionData(DeviceMotionData::create())
     42 {
     43     ScriptWrappable::init(this);
     44 }
     45 
     46 DeviceMotionEvent::DeviceMotionEvent(const AtomicString& eventType, DeviceMotionData* deviceMotionData)
     47     : Event(eventType, false, false) // Can't bubble, not cancelable
     48     , m_deviceMotionData(deviceMotionData)
     49 {
     50     ScriptWrappable::init(this);
     51 }
     52 
     53 void DeviceMotionEvent::initDeviceMotionEvent(const AtomicString& type, bool bubbles, bool cancelable, DeviceMotionData* deviceMotionData)
     54 {
     55     if (dispatched())
     56         return;
     57 
     58     initEvent(type, bubbles, cancelable);
     59     m_deviceMotionData = deviceMotionData;
     60 
     61     m_acceleration.clear();
     62     m_accelerationIncludingGravity.clear();
     63     m_rotationRate.clear();
     64 }
     65 
     66 DeviceAcceleration* DeviceMotionEvent::acceleration()
     67 {
     68     if (!m_deviceMotionData->acceleration())
     69         return 0;
     70 
     71     if (!m_acceleration)
     72         m_acceleration = DeviceAcceleration::create(m_deviceMotionData->acceleration());
     73 
     74     return m_acceleration.get();
     75 }
     76 
     77 DeviceAcceleration* DeviceMotionEvent::accelerationIncludingGravity()
     78 {
     79     if (!m_deviceMotionData->accelerationIncludingGravity())
     80         return 0;
     81 
     82     if (!m_accelerationIncludingGravity)
     83         m_accelerationIncludingGravity = DeviceAcceleration::create(m_deviceMotionData->accelerationIncludingGravity());
     84 
     85     return m_accelerationIncludingGravity.get();
     86 }
     87 
     88 DeviceRotationRate* DeviceMotionEvent::rotationRate()
     89 {
     90     if (!m_deviceMotionData->rotationRate())
     91         return 0;
     92 
     93     if (!m_rotationRate)
     94         m_rotationRate = DeviceRotationRate::create(m_deviceMotionData->rotationRate());
     95 
     96     return m_rotationRate.get();
     97 }
     98 
     99 double DeviceMotionEvent::interval(bool& isNull) const
    100 {
    101     if (m_deviceMotionData->canProvideInterval())
    102         return m_deviceMotionData->interval();
    103 
    104     isNull = true;
    105     return 0;
    106 }
    107 
    108 const AtomicString& DeviceMotionEvent::interfaceName() const
    109 {
    110     return eventNames().interfaceForDeviceMotionEvent;
    111 }
    112 
    113 } // namespace WebCore
    114