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/*
* Copyright (C) 2019 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. AND ITS CONTRIBUTORS ``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 ITS 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 "IdleRequestCallback.h"
#include <wtf/Deque.h>
#include <wtf/MonotonicTime.h>
#include <wtf/Seconds.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class IdleCallbackController;
}
namespace WTF {
template<typename T> struct IsDeprecatedWeakRefSmartPointerException;
template<> struct IsDeprecatedWeakRefSmartPointerException<WebCore::IdleCallbackController> : std::true_type { };
}
namespace WebCore {
class Document;
class WeakPtrImplWithEventTargetData;
class IdleCallbackController : public CanMakeWeakPtr<IdleCallbackController> {
WTF_MAKE_TZONE_ALLOCATED(IdleCallbackController);
public:
IdleCallbackController(Document&);
int queueIdleCallback(Ref<IdleRequestCallback>&&, Seconds timeout);
void removeIdleCallback(int);
void startIdlePeriod();
bool isEmpty() const { return m_idleRequestCallbacks.isEmpty() && m_runnableIdleCallbacks.isEmpty(); }
private:
void queueTaskToInvokeIdleCallbacks();
bool invokeIdleCallbacks();
void invokeIdleCallbackTimeout(unsigned identifier);
unsigned m_idleCallbackIdentifier { 0 };
struct IdleRequest {
unsigned identifier { 0 };
Ref<IdleRequestCallback> callback;
std::optional<MonotonicTime> timeout;
};
Deque<IdleRequest> m_idleRequestCallbacks;
Deque<IdleRequest> m_runnableIdleCallbacks;
WeakPtr<Document, WeakPtrImplWithEventTargetData> m_document;
};
} // namespace WebCore
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