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 32namespace WebCore { 33 34SuspendableTimer::SuspendableTimer(ScriptExecutionContext* context) 35 : ActiveDOMObject(context) 36 , m_nextFireInterval(0) 37 , m_repeatInterval(0) 38 , m_active(false) 39#if !ASSERT_DISABLED 40 , m_suspended(false) 41#endif 42{ 43} 44 45SuspendableTimer::~SuspendableTimer() 46{ 47} 48 49bool SuspendableTimer::hasPendingActivity() const 50{ 51 return isActive(); 52} 53 54void SuspendableTimer::stop() 55{ 56 TimerBase::stop(); 57} 58 59void 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 = nextUnalignedFireInterval(); 68 m_repeatInterval = repeatInterval(); 69 TimerBase::stop(); 70 } 71} 72 73void 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 83bool SuspendableTimer::canSuspend() const 84{ 85 return true; 86} 87 88} // namespace WebCore 89