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/*
* Copyright (C) 2008, 2013 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#pragma once
#include "ActiveDOMObject.h"
#include "Timer.h"
#include <wtf/Function.h>
#include <wtf/Seconds.h>
namespace WebCore {
// Do not use this class for new code. Use EventLoop's scheduleTask and scheduleRepeatingTask instead.
class SuspendableTimerBase : private TimerBase, public ActiveDOMObject {
WTF_MAKE_FAST_ALLOCATED;
public:
explicit SuspendableTimerBase(ScriptExecutionContext*);
virtual ~SuspendableTimerBase();
// A hook for derived classes to perform cleanup.
virtual void didStop();
// Part of TimerBase interface used by SuspendableTimerBase clients, modified to work when suspended.
bool isActive() const { return TimerBase::isActive() || (m_suspended && m_savedIsActive); }
bool isSuspended() const { return m_suspended; }
Seconds repeatInterval() const;
void startRepeating(Seconds nextFireTime, Seconds repeatInterval);
void startRepeating(Seconds repeatInterval) { startRepeating(repeatInterval, repeatInterval); }
void startOneShot(Seconds interval);
void augmentFireInterval(Seconds delta);
void augmentRepeatInterval(Seconds delta);
using TimerBase::didChangeAlignmentInterval;
using TimerBase::operator new;
using TimerBase::operator delete;
void cancel(); // Equivalent to TimerBase::stop(), whose name conflicts with ActiveDOMObject::stop().
private:
void fired() override = 0;
// ActiveDOMObject API.
bool virtualHasPendingActivity() const final;
void stop() final;
void suspend(ReasonForSuspension) final;
void resume() final;
Seconds m_savedNextFireInterval;
Seconds m_savedRepeatInterval;
bool m_suspended { false };
bool m_savedIsActive { false };
};
} // namespace WebCore
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