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 "core/events/ThreadLocalEventNames.h"
30#include "modules/device_orientation/DeviceAcceleration.h"
31#include "modules/device_orientation/DeviceMotionData.h"
32#include "modules/device_orientation/DeviceRotationRate.h"
33
34namespace WebCore {
35
36DeviceMotionEvent::~DeviceMotionEvent()
37{
38}
39
40DeviceMotionEvent::DeviceMotionEvent()
41    : m_deviceMotionData(DeviceMotionData::create())
42{
43    ScriptWrappable::init(this);
44}
45
46DeviceMotionEvent::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
53void 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
66DeviceAcceleration* 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
77DeviceAcceleration* 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
88DeviceRotationRate* 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
99double 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
108const AtomicString& DeviceMotionEvent::interfaceName() const
109{
110    return EventNames::DeviceMotionEvent;
111}
112
113} // namespace WebCore
114