Source/WebCore/mathml/MathMLAnnotationElement.cpp

/*
 * 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 "MathMLAnnotationElement.h"

#if ENABLE(MATHML)

#include "ElementInlines.h"
#include "HTMLHtmlElement.h"
#include "MathMLMathElement.h"
#include "MathMLNames.h"
#include "MathMLSelectElement.h"
#include "RenderMathMLBlock.h"
#include "SVGElementTypeHelpers.h"
#include "SVGSVGElement.h"
#include "Settings.h"
#include <wtf/TZoneMallocInlines.h>

namespace WebCore {

WTF_MAKE_TZONE_ALLOCATED_IMPL(MathMLAnnotationElement);

using namespace MathMLNames;

MathMLAnnotationElement::MathMLAnnotationElement(const QualifiedName& tagName, Document& document)
    : MathMLPresentationElement(tagName, document)
{
    ASSERT(hasTagName(annotationTag) || hasTagName(annotation_xmlTag));
}

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

RenderPtr<RenderElement> MathMLAnnotationElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition& insertionPosition)
{
    if (document().settings().coreMathMLEnabled() || hasTagName(MathMLNames::annotationTag))
        return MathMLElement::createElementRenderer(WTF::move(style), insertionPosition);

    ASSERT(hasTagName(annotation_xmlTag));
    return createRenderer<RenderMathMLBlock>(RenderObject::Type::MathMLBlock, *this, WTF::move(style));
}

bool MathMLAnnotationElement::childShouldCreateRenderer(const Node& child) const
{
    if (document().settings().coreMathMLEnabled())
        return MathMLElement::childShouldCreateRenderer(child);

    // For <annotation>, only text children are allowed.
    if (hasTagName(MathMLNames::annotationTag))
        return child.isTextNode();

    ASSERT(hasTagName(annotation_xmlTag));
    return StyledElement::childShouldCreateRenderer(child);
}

void MathMLAnnotationElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason reason)
{
    if (name == MathMLNames::srcAttr || name == MathMLNames::encodingAttr) {
        RefPtr parent = parentElement();
        if (is<MathMLElement>(parent) && parent->hasTagName(semanticsTag))
            downcast<MathMLElement>(*parent).updateSelectedChild();
    }
    MathMLPresentationElement::attributeChanged(name, oldValue, newValue, reason);
}

}

#endif // ENABLE(MATHML)