126 lines
4.7 KiB
C++
126 lines
4.7 KiB
C++
/*
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* Copyright (C) 2009 Alex Milowski (alex@milowski.com). All rights reserved.
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* Copyright (C) 2010 Apple Inc. All rights reserved.
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* Copyright (C) 2010 François Sausset (sausset@gmail.com). All rights reserved.
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* Copyright (C) 2016 Igalia S.L.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(MATHML)
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#include "MathMLNames.h"
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#include "StyledElement.h"
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namespace WebCore {
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class MathMLElement : public StyledElement {
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WTF_MAKE_ISO_ALLOCATED(MathMLElement);
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public:
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static Ref<MathMLElement> create(const QualifiedName& tagName, Document&);
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unsigned colSpan() const;
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unsigned rowSpan() const;
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virtual bool isMathMLToken() const { return false; }
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virtual bool isSemanticAnnotation() const { return false; }
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virtual bool isPresentationMathML() const { return false; }
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bool hasTagName(const MathMLQualifiedName& name) const { return hasLocalName(name.localName()); }
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// MathML lengths (https://www.w3.org/TR/MathML3/chapter2.html#fund.units)
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// TeX's Math Unit is used internally for named spaces (1 mu = 1/18 em).
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// Unitless values are interpreted as a multiple of a reference value.
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enum class LengthType { Cm, Em, Ex, In, MathUnit, Mm, ParsingFailed, Pc, Percentage, Pt, Px, UnitLess };
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struct Length {
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LengthType type { LengthType::ParsingFailed };
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float value { 0 };
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};
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enum class BooleanValue { True, False, Default };
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// These are the mathvariant values from the MathML recommendation.
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// The special value none means that no explicit mathvariant value has been specified.
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// Note that the numeral values are important for the computation performed in the mathVariant function of RenderMathMLToken, do not change them!
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enum class MathVariant {
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None = 0,
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Normal = 1,
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Bold = 2,
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Italic = 3,
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BoldItalic = 4,
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Script = 5,
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BoldScript = 6,
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Fraktur = 7,
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DoubleStruck = 8,
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BoldFraktur = 9,
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SansSerif = 10,
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BoldSansSerif = 11,
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SansSerifItalic = 12,
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SansSerifBoldItalic = 13,
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Monospace = 14,
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Initial = 15,
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Tailed = 16,
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Looped = 17,
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Stretched = 18
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};
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virtual std::optional<MathVariant> specifiedMathVariant() { return std::nullopt; }
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virtual void updateSelectedChild() { }
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protected:
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MathMLElement(const QualifiedName& tagName, Document&, ConstructionType = CreateMathMLElement);
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void parseAttribute(const QualifiedName&, const AtomString&) override;
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bool childShouldCreateRenderer(const Node&) const override;
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bool hasPresentationalHintsForAttribute(const QualifiedName&) const override;
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void collectPresentationalHintsForAttribute(const QualifiedName&, const AtomString&, MutableStyleProperties&) override;
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bool willRespondToMouseClickEvents() override;
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void defaultEventHandler(Event&) override;
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private:
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bool canStartSelection() const final;
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bool isKeyboardFocusable(KeyboardEvent*) const final;
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bool isMouseFocusable() const final;
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bool isURLAttribute(const Attribute&) const final;
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bool supportsFocus() const final;
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};
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inline bool Node::hasTagName(const MathMLQualifiedName& name) const
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{
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return isMathMLElement() && downcast<MathMLElement>(*this).hasTagName(name);
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}
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} // namespace WebCore
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SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::MathMLElement)
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static bool isType(const WebCore::Node& node) { return node.isMathMLElement(); }
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SPECIALIZE_TYPE_TRAITS_END()
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#include "MathMLElementTypeHelpers.h"
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#endif // ENABLE(MATHML)
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