1/*
2 *  Copyright (C) 2012 Samsung Electronics
3 *
4 *  This library is free software; you can redistribute it and/or
5 *  modify it under the terms of the GNU Library General Public
6 *  License as published by the Free Software Foundation; either
7 *  version 2 of the License, or (at your option) any later version.
8 *
9 *  This library is distributed in the hope that it will be useful,
10 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 *  Library General Public License for more details.
13 *
14 *  You should have received a copy of the GNU Library General Public License
15 *  along with this library; see the file COPYING.LIB.  If not, write to
16 *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 *  Boston, MA 02110-1301, USA.
18 */
19
20#include "config.h"
21#include "Vibration.h"
22
23#if ENABLE(VIBRATION)
24
25#include "VibrationClient.h"
26
27namespace WebCore {
28
29Vibration::Vibration(VibrationClient* client)
30    : m_vibrationClient(client)
31    , m_timerStart(this, &Vibration::timerStartFired)
32    , m_timerStop(this, &Vibration::timerStopFired)
33    , m_isVibrating(false)
34{
35}
36
37Vibration::~Vibration()
38{
39    m_vibrationClient->vibrationDestroyed();
40}
41
42PassOwnPtr<Vibration> Vibration::create(VibrationClient* client)
43{
44    return adoptPtr(new Vibration(client));
45}
46
47void Vibration::vibrate(const unsigned& time)
48{
49    if (!time) {
50        cancelVibration();
51        return;
52    }
53    m_pattern.append(time);
54    m_timerStart.startOneShot(0);
55}
56
57void Vibration::vibrate(const VibrationPattern& pattern)
58{
59    int length = pattern.size();
60
61    // Cancel the pre-existing instance of vibration patterns, if the pattern is 0 or an empty list.
62    if (!length || (length == 1 && !pattern[0])) {
63        cancelVibration();
64        return;
65    }
66
67    if (m_isVibrating)
68        cancelVibration();
69
70    if (m_timerStart.isActive())
71        m_timerStart.stop();
72
73    m_pattern = pattern;
74    m_timerStart.startOneShot(0);
75}
76
77void Vibration::cancelVibration()
78{
79    m_pattern.clear();
80    if (m_isVibrating) {
81        m_vibrationClient->cancelVibration();
82        m_isVibrating = false;
83        m_timerStop.stop();
84    }
85}
86
87void Vibration::suspendVibration()
88{
89    if (!m_isVibrating)
90        return;
91
92    m_pattern.insert(0, m_timerStop.nextFireInterval());
93    m_timerStop.stop();
94    cancelVibration();
95}
96
97void Vibration::resumeVibration()
98{
99    m_timerStart.startOneShot(0);
100}
101
102void Vibration::timerStartFired(Timer<Vibration>* timer)
103{
104    ASSERT_UNUSED(timer, timer == &m_timerStart);
105
106    m_timerStart.stop();
107
108    if (m_pattern.size()) {
109        m_isVibrating = true;
110        m_vibrationClient->vibrate(m_pattern[0]);
111        m_timerStop.startOneShot(m_pattern[0] / 1000.0);
112        m_pattern.remove(0);
113    }
114}
115
116void Vibration::timerStopFired(Timer<Vibration>* timer)
117{
118    ASSERT_UNUSED(timer, timer == &m_timerStop);
119
120    m_timerStop.stop();
121    m_isVibrating = false;
122
123    if (m_pattern.size()) {
124        m_timerStart.startOneShot(m_pattern[0] / 1000.0);
125        m_pattern.remove(0);
126    }
127}
128
129const char* Vibration::supplementName()
130{
131    return "Vibration";
132}
133
134bool Vibration::isActive(Page* page)
135{
136    return static_cast<bool>(Vibration::from(page));
137}
138
139void provideVibrationTo(Page* page, VibrationClient* client)
140{
141    Vibration::provideTo(page, Vibration::supplementName(), Vibration::create(client));
142}
143
144} // namespace WebCore
145
146#endif // ENABLE(VIBRATION)
147
148