Source/WebCore/mathml/MathMLScriptsElement.h

/*
 * Copyright (C) 2016 Igalia S.L. All rights reserved.
 *
 * 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 "MathMLPresentationElement.h"

namespace WebCore {

class MathMLScriptsElement : public MathMLPresentationElement {
    WTF_MAKE_ISO_ALLOCATED(MathMLScriptsElement);
public:
    static Ref<MathMLScriptsElement> create(const QualifiedName& tagName, Document&);

    enum class ScriptType { Sub, Super, SubSup, Multiscripts, Under, Over, UnderOver };
    ScriptType scriptType() const { return m_scriptType; }
    const Length& subscriptShift();
    const Length& superscriptShift();

protected:
    MathMLScriptsElement(const QualifiedName& tagName, Document&);

private:
    RenderPtr<RenderElement> createElementRenderer(RenderStyle&&, const RenderTreePosition&) override;
    void parseAttribute(const QualifiedName&, const AtomString&) override;

    const ScriptType m_scriptType;
    std::optional<Length> m_subscriptShift;
    std::optional<Length> m_superscriptShift;
};

}

#endif // ENABLE(MATHML)