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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
* Copyright (C) 2013-2017 Igalia S.L.
*
* 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 <wtf/text/WTFString.h>
namespace WebCore {
enum class GridPositionType : uint8_t {
AutoPosition,
ExplicitPosition, // [ <integer> || <string> ]
SpanPosition, // span && [ <integer> || <string> ]
NamedGridAreaPosition // <ident>
};
enum class GridPositionSide : uint8_t {
ColumnStartSide,
ColumnEndSide,
RowStartSide,
RowEndSide
};
class GridPosition {
public:
bool isPositive() const { return integerPosition() > 0; }
GridPositionType type() const { return m_type; }
bool isAuto() const { return m_type == GridPositionType::AutoPosition; }
bool isSpan() const { return m_type == GridPositionType::SpanPosition; }
bool isNamedGridArea() const { return m_type == GridPositionType::NamedGridAreaPosition; }
WEBCORE_EXPORT void setExplicitPosition(int position, const String& namedGridLine);
void setAutoPosition();
WEBCORE_EXPORT void setSpanPosition(int position, const String& namedGridLine);
void setNamedGridArea(const String&);
WEBCORE_EXPORT int integerPosition() const;
String namedGridLine() const;
WEBCORE_EXPORT int spanPosition() const;
friend bool operator==(const GridPosition&, const GridPosition&) = default;
bool shouldBeResolvedAgainstOppositePosition() const { return isAuto() || isSpan(); }
// Note that grid line 1 is internally represented by the index 0, that's why the max value for
// a position is kGridMaxTracks instead of kGridMaxTracks + 1.
static int max();
static int min();
WEBCORE_EXPORT static void setMaxPositionForTesting(unsigned);
private:
static std::optional<int> gMaxPositionForTesting;
void setIntegerPosition(int integerPosition) { m_integerPosition = clampTo(integerPosition, min(), max()); }
GridPositionType m_type { GridPositionType::AutoPosition };
int m_integerPosition { 0 };
String m_namedGridLine;
};
WTF::TextStream& operator<<(WTF::TextStream&, const GridPosition&);
} // namespace WebCore
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