SuspendableTimer.h [plain text]
#pragma once
#include "ActiveDOMObject.h"
#include "Timer.h"
#include <wtf/Function.h>
#include <wtf/Seconds.h>
namespace WebCore {
class SuspendableTimerBase : private TimerBase, public ActiveDOMObject {
WTF_MAKE_FAST_ALLOCATED;
public:
explicit SuspendableTimerBase(ScriptExecutionContext*);
virtual ~SuspendableTimerBase();
virtual void didStop();
bool isActive() const { return TimerBase::isActive() || (m_suspended && m_savedIsActive); }
bool isSuspended() const { return m_suspended; }
Seconds repeatInterval() const;
void startRepeating(Seconds 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();
private:
void fired() override = 0;
bool hasPendingActivity() 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 };
};
class SuspendableTimer final : public SuspendableTimerBase {
WTF_MAKE_FAST_ALLOCATED;
public:
template <typename TimerFiredClass, typename TimerFiredBaseClass>
SuspendableTimer(ScriptExecutionContext* context, TimerFiredClass& object, void (TimerFiredBaseClass::*function)())
: SuspendableTimerBase(context)
, m_function(std::bind(function, &object))
{
}
SuspendableTimer(ScriptExecutionContext* context, WTF::Function<void ()>&& function)
: SuspendableTimerBase(context)
, m_function(WTFMove(function))
{
}
private:
void fired() final
{
m_function();
}
const char* activeDOMObjectName() const final;
WTF::Function<void ()> m_function;
};
}