#pragma once
#include "GridPositionsResolver.h"
#include "OrderIterator.h"
#include <wtf/HashMap.h>
#include <wtf/ListHashSet.h>
namespace WebCore {
typedef Vector<WeakPtr<RenderBox>, 1> GridCell;
typedef Vector<Vector<GridCell>> GridAsMatrix;
typedef ListHashSet<size_t> OrderedTrackIndexSet;
class GridArea;
class GridPositionsResolver;
class RenderGrid;
class Grid final {
public:
explicit Grid(RenderGrid&);
unsigned numTracks(GridTrackSizingDirection) const;
void ensureGridSize(unsigned maximumRowSize, unsigned maximumColumnSize);
void insert(RenderBox&, const GridArea&);
bool hasGridItems() const { return !m_gridItemArea.isEmpty(); }
GridArea gridItemArea(const RenderBox& item) const;
void setGridItemArea(const RenderBox& item, GridArea);
GridSpan gridItemSpan(const RenderBox&, GridTrackSizingDirection) const;
const GridCell& cell(unsigned row, unsigned column) const { return m_grid[row][column]; }
int smallestTrackStart(GridTrackSizingDirection) const;
void setSmallestTracksStart(int rowStart, int columnStart);
unsigned autoRepeatTracks(GridTrackSizingDirection) const;
void setAutoRepeatTracks(unsigned autoRepeatRows, unsigned autoRepeatColumns);
void setAutoRepeatEmptyColumns(std::unique_ptr<OrderedTrackIndexSet>);
void setAutoRepeatEmptyRows(std::unique_ptr<OrderedTrackIndexSet>);
unsigned autoRepeatEmptyTracksCount(GridTrackSizingDirection) const;
bool hasAutoRepeatEmptyTracks(GridTrackSizingDirection) const;
bool isEmptyAutoRepeatTrack(GridTrackSizingDirection, unsigned) const;
OrderedTrackIndexSet* autoRepeatEmptyTracks(GridTrackSizingDirection) const;
OrderIterator& orderIterator() { return m_orderIterator; }
void setNeedsItemsPlacement(bool);
bool needsItemsPlacement() const { return m_needsItemsPlacement; };
private:
friend class GridIterator;
OrderIterator m_orderIterator;
int m_smallestColumnStart { 0 };
int m_smallestRowStart { 0 };
unsigned m_autoRepeatColumns { 0 };
unsigned m_autoRepeatRows { 0 };
bool m_needsItemsPlacement { true };
GridAsMatrix m_grid;
HashMap<const RenderBox*, GridArea> m_gridItemArea;
HashMap<const RenderBox*, size_t> m_gridItemsIndexesMap;
std::unique_ptr<OrderedTrackIndexSet> m_autoRepeatEmptyColumns;
std::unique_ptr<OrderedTrackIndexSet> m_autoRepeatEmptyRows;
};
class GridIterator {
WTF_MAKE_NONCOPYABLE(GridIterator);
public:
GridIterator(const Grid&, GridTrackSizingDirection, unsigned fixedTrackIndex, unsigned varyingTrackIndex = 0);
RenderBox* nextGridItem();
bool isEmptyAreaEnough(unsigned rowSpan, unsigned columnSpan) const;
std::unique_ptr<GridArea> nextEmptyGridArea(unsigned fixedTrackSpan, unsigned varyingTrackSpan);
private:
const GridAsMatrix& m_grid;
GridTrackSizingDirection m_direction;
unsigned m_rowIndex;
unsigned m_columnIndex;
unsigned m_childIndex;
};
}