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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 "AbstractEventLoop.h"
#include "DocumentIdentifier.h"
#include <wtf/HashSet.h>
namespace WebCore {
class Document;
// https://html.spec.whatwg.org/multipage/webappapis.html#window-event-loop
class WindowEventLoop final : public AbstractEventLoop {
public:
static Ref<WindowEventLoop> create();
void queueTask(TaskSource, ScriptExecutionContext&, TaskFunction&&) override;
void suspend(ScriptExecutionContext&) override;
void resume(ScriptExecutionContext&) override;
private:
WindowEventLoop() = default;
void scheduleToRunIfNeeded();
void run();
struct Task {
TaskSource source;
TaskFunction task;
DocumentIdentifier documentIdentifier;
};
// Use a global queue instead of multiple task queues since HTML5 spec allows UA to pick arbitrary queue.
Vector<Task> m_tasks;
bool m_isScheduledToRun { false };
HashSet<DocumentIdentifier> m_documentIdentifiersForSuspendedTasks;
};
} // namespace WebCore