Source/WebCore/dom/ActiveDOMCallbackMicrotask.cpp

/*
 * Copyright (C) 2015 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
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 */

#include "config.h"
#include "ActiveDOMCallbackMicrotask.h"

namespace WebCore {

ActiveDOMCallbackMicrotask::ActiveDOMCallbackMicrotask(MicrotaskQueue& queue, ScriptExecutionContext& scriptExecutionContext, Function<void()>&& task)
    : ActiveDOMCallback(&scriptExecutionContext)
    , m_queue(queue)
    , m_task(WTFMove(task))
{
}

ActiveDOMCallbackMicrotask::~ActiveDOMCallbackMicrotask() = default;

Microtask::Result ActiveDOMCallbackMicrotask::run()
{
    if (!canInvokeCallback())
        return Result::KeepInQueue;

    m_task();
    return Result::Done;
}

void ActiveDOMCallbackMicrotask::contextDestroyed()
{
    // NOTE: Calling the function below will cause this to be destroyed.
    removeSelfFromQueue(m_queue);
}

} // namespace WebCore