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/*
* Copyright (C) 2009 Alex Milowski (alex@milowski.com). All rights reserved.
* Copyright (C) 2010 Apple Inc. All rights reserved.
* Copyright (C) 2010 François Sausset (sausset@gmail.com). All rights reserved.
* Copyright (C) 2016 Igalia S.L.
*
* 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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
#if ENABLE(MATHML)
#include "MathMLNames.h"
#include "StyledElement.h"
namespace WebCore {
class MathMLElement : public StyledElement {
public:
static Ref<MathMLElement> create(const QualifiedName& tagName, Document&);
unsigned colSpan() const;
unsigned rowSpan() const;
virtual bool isMathMLToken() const { return false; }
virtual bool isSemanticAnnotation() const { return false; }
virtual bool isPresentationMathML() const { return false; }
bool hasTagName(const MathMLQualifiedName& name) const { return hasLocalName(name.localName()); }
// MathML lengths (https://www.w3.org/TR/MathML3/chapter2.html#fund.units)
// TeX's Math Unit is used internally for named spaces (1 mu = 1/18 em).
// Unitless values are interpreted as a multiple of a reference value.
enum class LengthType { Cm, Em, Ex, In, MathUnit, Mm, ParsingFailed, Pc, Percentage, Pt, Px, UnitLess, Infinity };
struct Length {
LengthType type { LengthType::ParsingFailed };
float value { 0 };
};
enum class BooleanValue { True, False, Default };
// These are the mathvariant values from the MathML recommendation.
// The special value none means that no explicit mathvariant value has been specified.
// Note that the numeral values are important for the computation performed in the mathVariant function of RenderMathMLToken, do not change them!
enum class MathVariant {
None = 0,
Normal = 1,
Bold = 2,
Italic = 3,
BoldItalic = 4,
Script = 5,
BoldScript = 6,
Fraktur = 7,
DoubleStruck = 8,
BoldFraktur = 9,
SansSerif = 10,
BoldSansSerif = 11,
SansSerifItalic = 12,
SansSerifBoldItalic = 13,
Monospace = 14,
Initial = 15,
Tailed = 16,
Looped = 17,
Stretched = 18
};
virtual std::optional<bool> specifiedDisplayStyle() { return std::nullopt; }
virtual std::optional<MathVariant> specifiedMathVariant() { return std::nullopt; }
virtual void updateSelectedChild() { }
protected:
MathMLElement(const QualifiedName& tagName, Document&);
static StringView stripLeadingAndTrailingWhitespace(const StringView&);
void parseAttribute(const QualifiedName&, const AtomicString&) override;
bool childShouldCreateRenderer(const Node&) const override;
bool isPresentationAttribute(const QualifiedName&) const override;
void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStyleProperties&) override;
bool willRespondToMouseClickEvents() override;
void defaultEventHandler(Event&) override;
private:
bool canStartSelection() const final;
bool isFocusable() const final;
bool isKeyboardFocusable(KeyboardEvent&) const final;
bool isMouseFocusable() const final;
bool isURLAttribute(const Attribute&) const final;
bool supportsFocus() const final;
int tabIndex() const final;
};
inline bool Node::hasTagName(const MathMLQualifiedName& name) const
{
return isMathMLElement() && downcast<MathMLElement>(*this).hasTagName(name);
}
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::MathMLElement)
static bool isType(const WebCore::Node& node) { return node.isMathMLElement(); }
SPECIALIZE_TYPE_TRAITS_END()
#include "MathMLElementTypeHelpers.h"
#endif // ENABLE(MATHML)
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