/*
 * Copyright (C) 2026 Apple Inc. 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 APPLE INC. ``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 APPLE INC. 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
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "StyleTextDecorationInset.h"

#include "StyleBuilderChecking.h"
#include "StyleComputedStyle+GettersInlines.h"
#include "StylePrimitiveNumericTypes+CSSValueConversion.h"
#include "StylePrimitiveNumericTypes+Evaluation.h"

namespace WebCore {
namespace Style {

using namespace CSS::Literals;

float TextDecorationInset::resolvedStart(const Style::ComputedStyle& style, float autoValue) const
{
    if (auto pair = tryValue())
        return Style::evaluate<float>(pair->first(), style.usedZoomForLength());
    return autoValue;
}

float TextDecorationInset::resolvedEnd(const Style::ComputedStyle& style, float autoValue) const
{
    if (auto pair = tryValue())
        return Style::evaluate<float>(pair->second(), style.usedZoomForLength());
    return autoValue;
}

// MARK: - Conversion

auto CSSValueConversion<TextDecorationInsetPair>::operator()(BuilderState& state, const CSSValue& value) -> TextDecorationInsetPair
{
    using Length = Style::Length<CSS::AllUnzoomed>;

    if (RefPtr primitiveValue = dynamicDowncast<CSSPrimitiveValue>(value)) {
        auto length = toStyleFromCSSValue<Length>(state, *primitiveValue);
        return { length, length };
    }

    auto pair = requiredPairDowncast<CSSPrimitiveValue>(state, value);
    if (!pair)
        return { 0_css_px, 0_css_px };

    return {
        toStyleFromCSSValue<Length>(state, pair->first),
        toStyleFromCSSValue<Length>(state, pair->second),
    };
}

} // namespace Style
} // namespace WebCore
