| /* |
| * 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 "CSSValueKeywords.h" |
| #include "Color.h" |
| #include <wtf/OptionSet.h> |
| |
| namespace WebCore { |
| |
| class StyleColor { |
| public: |
| StyleColor() |
| : m_currentColor(true) { } |
| StyleColor(Color color) |
| : m_color(color) |
| , m_currentColor(false) { } |
| static StyleColor currentColor() { return StyleColor(); } |
| |
| bool isCurrentColor() const { return m_currentColor; } |
| const Color& getColor() const { ASSERT(!isCurrentColor()); return m_color; } |
| |
| const Color& resolve(const Color& currentColor) const { return m_currentColor ? currentColor : m_color; } |
| |
| enum class Options : uint8_t { |
| ForVisitedLink = 1 << 0, |
| UseSystemAppearance = 1 << 1 |
| }; |
| |
| static Color colorFromKeyword(CSSValueID, OptionSet<Options>); |
| static bool isColorKeyword(CSSValueID); |
| static bool isSystemColor(CSSValueID); |
| |
| private: |
| Color m_color; |
| bool m_currentColor; |
| }; |
| |
| inline bool operator==(const StyleColor& a, const StyleColor& b) |
| { |
| if (a.isCurrentColor() || b.isCurrentColor()) |
| return a.isCurrentColor() && b.isCurrentColor(); |
| return a.getColor() == b.getColor(); |
| } |
| |
| inline bool operator!=(const StyleColor& a, const StyleColor& b) |
| { |
| return !(a == b); |
| } |
| |
| |
| } // namespace WebCore |