Source/WebCore/mathml/MathMLFractionElement.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 MathMLFractionElement final : public MathMLPresentationElement {
    WTF_MAKE_ISO_ALLOCATED(MathMLFractionElement);
public:
    static Ref<MathMLFractionElement> create(const QualifiedName& tagName, Document&);
    const Length& lineThickness();
    enum FractionAlignment {
        FractionAlignmentCenter,
        FractionAlignmentLeft,
        FractionAlignmentRight
    };
    FractionAlignment numeratorAlignment();
    FractionAlignment denominatorAlignment();

private:
    MathMLFractionElement(const QualifiedName& tagName, Document&);
    RenderPtr<RenderElement> createElementRenderer(RenderStyle&&, const RenderTreePosition&) final;
    void parseAttribute(const QualifiedName&, const AtomString&) final;

    FractionAlignment cachedFractionAlignment(const QualifiedName&, std::optional<FractionAlignment>&);

    std::optional<Length> m_lineThickness;
    std::optional<FractionAlignment> m_numeratorAlignment;
    std::optional<FractionAlignment> m_denominatorAlignment;
};

}

#endif // ENABLE(MATHML)