Source/WebCore/style/StyleContainmentChecker.h

/*
 * Copyright (C) 2026 Samuel Weinig <sam@webkit.org>
 *
 * 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 <wtf/Forward.h>

namespace WebCore {

class Element;

namespace Style {

class ComputedStyle;

// https://drafts.csswg.org/css-contain/#containment

class ContainmentChecker {
public:
    inline ContainmentChecker(const Style::ComputedStyle&, const Element&);
    inline ~ContainmentChecker();

    inline bool shouldApplyLayoutContainment() const;
    inline bool shouldApplySizeContainment() const;
    inline bool shouldApplyInlineSizeContainment() const;
    inline bool shouldApplyStyleContainment() const;
    inline bool shouldApplyPaintContainment() const;

    inline bool isSkippedContentRoot() const;

private:
    const CheckedRef<const Style::ComputedStyle> m_style;
    const Ref<const Element> m_element;
};

} // namespace Style
} // namespace WebCore