/*
 * Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
 *
 * 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,
 * 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.
 */

#include "config.h"
#include "StyleTextAlignLast.h"

#include "CSSKeywordValue.h"
#include "StyleBuilderChecking.h"
#include "StyleComputedStyle+GettersInlines.h"
#include "StyleKeyword+CSSValueConversion.h"

namespace WebCore {
namespace Style {

auto CSSValueConversion<TextAlignLast>::operator()(BuilderState& state, const CSSValue& value) -> TextAlignLast
{
    RefPtr keywordValue = requiredDowncast<CSSKeywordValue>(state, value);
    if (!keywordValue)
        return TextAlignLast::Auto;

    if (keywordValue->valueID() == CSSValueMatchParent) {
        CheckedRef parentStyle = state.parentStyle();

        if (parentStyle->textAlignLast() == TextAlignLast::Start)
            return parentStyle->writingMode().isBidiLTR() ? TextAlignLast::Left : TextAlignLast::Right;
        if (parentStyle->textAlignLast() == TextAlignLast::End)
            return parentStyle->writingMode().isBidiLTR() ? TextAlignLast::Right : TextAlignLast::Left;
        return parentStyle->textAlignLast();
    }

    return fromCSSValue<TextAlignLast>(*keywordValue);
}

} // namespace Style
} // namespace WebCore
