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/*
* Copyright (C) 2004 Zack Rusin <zack@kde.org>
* Copyright (C) 2004-2025 Apple Inc. All rights reserved.
* Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
* Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
* Copyright (C) 2011 Sencha, Inc. All rights reserved.
* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
* 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. AND ITS 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 APPLE INC. OR ITS 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 "RenderStyleInlines.h"
#include "StyleExtractorState.h"
#include "StyleGridData.h"
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
namespace Style {
class OrderedNamedLinesCollector {
WTF_MAKE_NONCOPYABLE(OrderedNamedLinesCollector);
public:
OrderedNamedLinesCollector(ExtractorState&, const Style::GridTemplateList& tracks)
: m_orderedNamedGridLines(tracks.orderedNamedLines)
, m_orderedNamedAutoRepeatGridLines(tracks.autoRepeatOrderedNamedLines)
{
}
virtual ~OrderedNamedLinesCollector() = default;
bool isEmpty() const { return m_orderedNamedGridLines.map.isEmpty() && m_orderedNamedAutoRepeatGridLines.map.isEmpty(); }
virtual void collectLineNamesForIndex(Vector<String>&, unsigned index) const = 0;
virtual int namedGridLineCount() const { return m_orderedNamedGridLines.map.size(); }
protected:
enum class NamedLinesType : bool { NamedLines, AutoRepeatNamedLines };
void appendLines(Vector<String>&, unsigned index, NamedLinesType) const;
const GridOrderedNamedLinesMap& m_orderedNamedGridLines;
const GridOrderedNamedLinesMap& m_orderedNamedAutoRepeatGridLines;
};
class OrderedNamedLinesCollectorInGridLayout : public OrderedNamedLinesCollector {
public:
OrderedNamedLinesCollectorInGridLayout(ExtractorState& state, const Style::GridTemplateList& tracks, unsigned autoRepeatTracksCount, unsigned autoRepeatTrackListLength)
: OrderedNamedLinesCollector(state, tracks)
, m_insertionPoint(tracks.autoRepeatInsertionPoint)
, m_autoRepeatTotalTracks(autoRepeatTracksCount)
, m_autoRepeatTrackListLength(autoRepeatTrackListLength)
{
}
void collectLineNamesForIndex(Vector<String>&, unsigned index) const override;
private:
unsigned m_insertionPoint { 0 };
unsigned m_autoRepeatTotalTracks { 0 };
unsigned m_autoRepeatTrackListLength { 0 };
};
class OrderedNamedLinesCollectorInSubgridLayout : public OrderedNamedLinesCollector {
public:
OrderedNamedLinesCollectorInSubgridLayout(ExtractorState& state, const Style::GridTemplateList& tracks, unsigned totalTracksCount)
: OrderedNamedLinesCollector(state, tracks)
, m_insertionPoint(tracks.autoRepeatInsertionPoint)
, m_autoRepeatLineSetListLength(tracks.autoRepeatOrderedNamedLines.map.size())
, m_totalLines(totalTracksCount + 1)
{
if (!m_autoRepeatLineSetListLength) {
m_autoRepeatTotalLineSets = 0;
return;
}
unsigned named = tracks.orderedNamedLines.map.size();
if (named >= m_totalLines) {
m_autoRepeatTotalLineSets = 0;
return;
}
m_autoRepeatTotalLineSets = (m_totalLines - named) / m_autoRepeatLineSetListLength;
m_autoRepeatTotalLineSets *= m_autoRepeatLineSetListLength;
}
void collectLineNamesForIndex(Vector<String>&, unsigned index) const override;
int namedGridLineCount() const override { return m_totalLines; }
private:
unsigned m_insertionPoint { 0 };
unsigned m_autoRepeatTotalLineSets { 0 };
unsigned m_autoRepeatLineSetListLength { 0 };
unsigned m_totalLines { 0 };
};
inline void OrderedNamedLinesCollector::appendLines(Vector<String>& lineNames, unsigned index, NamedLinesType type) const
{
auto& map = (type == NamedLinesType::NamedLines ? m_orderedNamedGridLines : m_orderedNamedAutoRepeatGridLines).map;
auto it = map.find(index);
if (it == map.end())
return;
for (auto& name : it->value)
lineNames.append(name);
}
inline void OrderedNamedLinesCollectorInGridLayout::collectLineNamesForIndex(Vector<String>& lineNamesValue, unsigned i) const
{
ASSERT(!isEmpty());
if (!m_autoRepeatTrackListLength || i < m_insertionPoint) {
appendLines(lineNamesValue, i, NamedLinesType::NamedLines);
return;
}
ASSERT(m_autoRepeatTotalTracks);
if (i > m_insertionPoint + m_autoRepeatTotalTracks) {
appendLines(lineNamesValue, i - (m_autoRepeatTotalTracks - 1), NamedLinesType::NamedLines);
return;
}
if (i == m_insertionPoint) {
appendLines(lineNamesValue, i, NamedLinesType::NamedLines);
appendLines(lineNamesValue, 0, NamedLinesType::AutoRepeatNamedLines);
return;
}
if (i == m_insertionPoint + m_autoRepeatTotalTracks) {
appendLines(lineNamesValue, m_autoRepeatTrackListLength, NamedLinesType::AutoRepeatNamedLines);
appendLines(lineNamesValue, m_insertionPoint + 1, NamedLinesType::NamedLines);
return;
}
unsigned autoRepeatIndexInFirstRepetition = (i - m_insertionPoint) % m_autoRepeatTrackListLength;
if (!autoRepeatIndexInFirstRepetition && i > m_insertionPoint)
appendLines(lineNamesValue, m_autoRepeatTrackListLength, NamedLinesType::AutoRepeatNamedLines);
appendLines(lineNamesValue, autoRepeatIndexInFirstRepetition, NamedLinesType::AutoRepeatNamedLines);
}
inline void OrderedNamedLinesCollectorInSubgridLayout::collectLineNamesForIndex(Vector<String>& lineNamesValue, unsigned i) const
{
if (!m_autoRepeatLineSetListLength || i < m_insertionPoint) {
appendLines(lineNamesValue, i, NamedLinesType::NamedLines);
return;
}
if (i >= m_insertionPoint + m_autoRepeatTotalLineSets) {
appendLines(lineNamesValue, i - m_autoRepeatTotalLineSets, NamedLinesType::NamedLines);
return;
}
unsigned autoRepeatIndexInFirstRepetition = (i - m_insertionPoint) % m_autoRepeatLineSetListLength;
appendLines(lineNamesValue, autoRepeatIndexInFirstRepetition, NamedLinesType::AutoRepeatNamedLines);
}
} // namespace Style
} // namespace WebCore
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