Source/WebCore/mathml/MathMLPaddedElement.cpp

/*
 * Copyright (C) 2025 Apple Inc. All rights reserved.
 * Copyright (C) 2016 Igalia S.L. All rights reserved.
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 * modification, are permitted provided that the following conditions
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#include "config.h"
#include "MathMLPaddedElement.h"

#if ENABLE(MATHML)

#include "NodeName.h"
#include "RenderMathMLPadded.h"
#include "RenderObjectInlines.h"
#include <wtf/TZoneMallocInlines.h>

namespace WebCore {

WTF_MAKE_TZONE_ALLOCATED_IMPL(MathMLPaddedElement);

using namespace MathMLNames;

inline MathMLPaddedElement::MathMLPaddedElement(const QualifiedName& tagName, Document& document)
    : MathMLRowElement(tagName, document)
{
}

Ref<MathMLPaddedElement> MathMLPaddedElement::create(const QualifiedName& tagName, Document& document)
{
    return adoptRef(*new MathMLPaddedElement(tagName, document));
}

const MathMLElement::Length& MathMLPaddedElement::width()
{
    return cachedMathMLLength(MathMLNames::widthAttr, m_width);
}

const MathMLElement::Length& MathMLPaddedElement::height()
{
    return cachedMathMLLength(MathMLNames::heightAttr, m_height);
}

const MathMLElement::Length& MathMLPaddedElement::depth()
{
    return cachedMathMLLength(MathMLNames::depthAttr, m_depth);
}

const MathMLElement::Length& MathMLPaddedElement::lspace()
{
    return cachedMathMLLength(MathMLNames::lspaceAttr, m_lspace);
}

const MathMLElement::Length& MathMLPaddedElement::voffset()
{
    return cachedMathMLLength(MathMLNames::voffsetAttr, m_voffset);
}

void MathMLPaddedElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
    bool affectsLayout = false;
    switch (name.nodeName()) {
    case AttributeNames::widthAttr:
        m_width = std::nullopt;
        affectsLayout = true;
        break;
    case AttributeNames::heightAttr:
        m_height = std::nullopt;
        affectsLayout = true;
        break;
    case AttributeNames::depthAttr:
        m_depth = std::nullopt;
        affectsLayout = true;
        break;
    case AttributeNames::lspaceAttr:
        m_lspace = std::nullopt;
        affectsLayout = true;
        break;
    case AttributeNames::voffsetAttr:
        m_voffset = std::nullopt;
        affectsLayout = true;
        break;
    default:
        break;
    }

    if (affectsLayout) {
        if (CheckedPtr renderer = this->renderer())
            renderer->setNeedsLayoutAndPreferredWidthsUpdate();
    }

    MathMLElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}

RenderPtr<RenderElement> MathMLPaddedElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
    ASSERT(hasTagName(MathMLNames::mpaddedTag));
    return createRenderer<RenderMathMLPadded>(*this, WTF::move(style));
}

}

#endif // ENABLE(MATHML)