/*
 * Copyright (C) 2016-2023 Apple Inc. All rights reserved.
 * Copyright (C) 2024 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 "CSSPropertyParserConsumer+UI.h"

#include "CSSCursorImageValue.h"
#include "CSSParserContext.h"
#include "CSSParserTokenRange.h"
#include "CSSPrimitiveValue.h"
#include "CSSPropertyParserConsumer+CSSPrimitiveValueResolver.h"
#include "CSSPropertyParserConsumer+Ident.h"
#include "CSSPropertyParserConsumer+Image.h"
#include "CSSPropertyParserConsumer+NumberDefinitions.h"
#include "CSSPropertyParserConsumer+Primitives.h"
#include "CSSPropertyParserState.h"
#include "CSSValueKeywords.h"
#include "CSSValueList.h"
#include "CSSValuePair.h"

namespace WebCore {
namespace CSSPropertyParserHelpers {

RefPtr<CSSValue> consumeCursor(CSSParserTokenRange& range, CSS::PropertyParserState& state)
{
    // <cursor> = [ [ <url> | <url-set> ] [<x> <y>]? ]#? [ auto | default | none | context-menu | help | pointer | progress | wait | cell | crosshair | text | vertical-text | alias | copy | move | no-drop | not-allowed | grab | grabbing | e-resize | n-resize | ne-resize | nw-resize | s-resize | se-resize | sw-resize | w-resize | ew-resize | ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | all-scroll | zoom-in | zoom-out ]
    // https://drafts.csswg.org/css-ui/#propdef-cursor

    CSSValueListBuilder list;
    while (auto image = consumeImage(range, state, { AllowedImageType::URLFunction, AllowedImageType::ImageSet })) {
        RefPtr<CSSValuePair> hotSpot;
        if (auto x = CSSPrimitiveValueResolver<CSS::Number<>>::consumeAndResolve(range, state)) {
            auto y = CSSPrimitiveValueResolver<CSS::Number<>>::consumeAndResolve(range, state);
            if (!y)
                return nullptr;
            hotSpot = CSSValuePair::createNoncoalescing(x.releaseNonNull(), y.releaseNonNull());
        }
        list.append(CSSCursorImageValue::create(image.releaseNonNull(), WTFMove(hotSpot)));
        if (!consumeCommaIncludingWhitespace(range))
            return nullptr;
    }

    CSSValueID id = range.peek().id();
    RefPtr<CSSValue> cursorType;
    if (id == CSSValueHand) {
        if (state.context.mode != HTMLQuirksMode) // Non-standard behavior
            return nullptr;
        cursorType = CSSPrimitiveValue::create(CSSValuePointer);
        range.consumeIncludingWhitespace();
    } else if ((id >= CSSValueAuto && id <= CSSValueWebkitZoomOut) || id == CSSValueCopy || id == CSSValueNone)
        cursorType = consumeIdent(range);
    else
        return nullptr;

    if (list.isEmpty())
        return cursorType;
    list.append(cursorType.releaseNonNull());
    return CSSValueList::createCommaSeparated(WTFMove(list));
}

} // namespace CSSPropertyParserHelpers
} // namespace WebCore
