1 /*
2 * Copyright (C) 2008 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 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
27 #include "config.h"
28 #include "SuspendableTimer.h"
29
30 #include "ScriptExecutionContext.h"
31
32 namespace WebCore {
33
SuspendableTimer(ScriptExecutionContext * context)34 SuspendableTimer::SuspendableTimer(ScriptExecutionContext* context)
35 : ActiveDOMObject(context, this)
36 , m_nextFireInterval(0)
37 , m_repeatInterval(0)
38 #if !ASSERT_DISABLED
39 , m_active(false)
40 , m_suspended(false)
41 #endif
42 {
43 }
44
~SuspendableTimer()45 SuspendableTimer::~SuspendableTimer()
46 {
47 }
48
hasPendingActivity() const49 bool SuspendableTimer::hasPendingActivity() const
50 {
51 return isActive();
52 }
53
stop()54 void SuspendableTimer::stop()
55 {
56 TimerBase::stop();
57 }
58
suspend(ReasonForSuspension)59 void SuspendableTimer::suspend(ReasonForSuspension)
60 {
61 #if !ASSERT_DISABLED
62 ASSERT(!m_suspended);
63 m_suspended = true;
64 #endif
65 m_active = isActive();
66 if (m_active) {
67 m_nextFireInterval = nextFireInterval();
68 m_repeatInterval = repeatInterval();
69 TimerBase::stop();
70 }
71 }
72
resume()73 void SuspendableTimer::resume()
74 {
75 #if !ASSERT_DISABLED
76 ASSERT(m_suspended);
77 m_suspended = false;
78 #endif
79 if (m_active)
80 start(m_nextFireInterval, m_repeatInterval);
81 }
82
canSuspend() const83 bool SuspendableTimer::canSuspend() const
84 {
85 return true;
86 }
87
88 } // namespace WebCore
89