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 "BatteryManager.h"
22
23#if ENABLE(BATTERY_STATUS)
24
25#include "BatteryController.h"
26#include "BatteryStatus.h"
27#include "Document.h"
28#include "Event.h"
29#include "Frame.h"
30#include "Navigator.h"
31#include <limits>
32
33namespace WebCore {
34
35PassRefPtr<BatteryManager> BatteryManager::create(Navigator* navigator)
36{
37    RefPtr<BatteryManager> batteryManager(adoptRef(new BatteryManager(navigator)));
38    batteryManager->suspendIfNeeded();
39    return batteryManager.release();
40}
41
42BatteryManager::~BatteryManager()
43{
44}
45
46BatteryManager::BatteryManager(Navigator* navigator)
47    : ActiveDOMObject(navigator->frame()->document())
48    , m_batteryController(BatteryController::from(navigator->frame()->page()))
49    , m_batteryStatus(0)
50{
51    m_batteryController->addListener(this);
52}
53
54bool BatteryManager::charging()
55{
56    return m_batteryStatus ? m_batteryStatus->charging() : true;
57}
58
59double BatteryManager::chargingTime()
60{
61    if (!m_batteryStatus || !m_batteryStatus->charging())
62        return std::numeric_limits<double>::infinity();
63
64    return m_batteryStatus->chargingTime();
65}
66
67double BatteryManager::dischargingTime()
68{
69    if (!m_batteryStatus || m_batteryStatus->charging())
70        return std::numeric_limits<double>::infinity();
71
72    return m_batteryStatus->dischargingTime();
73}
74
75double BatteryManager::level()
76{
77    return m_batteryStatus ? m_batteryStatus->level() : 1;
78}
79
80void BatteryManager::didChangeBatteryStatus(PassRefPtr<Event> event, PassRefPtr<BatteryStatus> batteryStatus)
81{
82    updateBatteryStatus(batteryStatus);
83    dispatchEvent(event);
84}
85
86void BatteryManager::updateBatteryStatus(PassRefPtr<BatteryStatus> batteryStatus)
87{
88    m_batteryStatus = batteryStatus;
89}
90
91void BatteryManager::suspend(ReasonForSuspension)
92{
93    if (m_batteryController)
94        m_batteryController->removeListener(this);
95}
96
97void BatteryManager::resume()
98{
99    if (m_batteryController)
100        m_batteryController->addListener(this);
101}
102
103void BatteryManager::stop()
104{
105    if (m_batteryController)
106        m_batteryController->removeListener(this);
107}
108
109} // namespace WebCore
110
111#endif // BATTERY_STATUS
112
113