/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 * Copyright (C) 2016 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * 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

#include "CSSPrimitiveValue.h"
#include "CSSValueKeywords.h"
#include "Color.h"
#include <wtf/OptionSet.h>

namespace WebCore {

enum class StyleColorOptions : uint8_t {
    ForVisitedLink = 1 << 0,
    UseSystemAppearance = 1 << 1,
    UseDarkAppearance = 1 << 2,
    UseElevatedUserInterfaceLevel = 1 << 3
};

struct StyleColor {
    static Color colorFromKeyword(CSSValueID, OptionSet<StyleColorOptions>);
    static bool isAbsoluteColorKeyword(CSSValueID);

    static bool isCurrentColorKeyword(CSSValueID id) { return id == CSSValueCurrentcolor; }
    static bool isCurrentColor(const CSSPrimitiveValue& value) { return isCurrentColorKeyword(value.valueID()); }

    WEBCORE_EXPORT static bool isSystemColorKeyword(CSSValueID);

    enum class CSSColorType : uint8_t {
        Absolute = 1 << 0,
        Current = 1 << 1,
        System = 1 << 2,
    };
    // https://drafts.csswg.org/css-color-4/#typedef-color
    static bool isColorKeyword(CSSValueID, OptionSet<CSSColorType> = { CSSColorType::Absolute, CSSColorType::Current, CSSColorType::System });
};

} // namespace WebCore
