third_party/WebKit/Source/core/css/CSSGridTemplateAreasValue.cpp

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#include "config.h"
#include "core/css/CSSGridTemplateAreasValue.h"

#include "wtf/text/StringBuilder.h"

namespace blink {

CSSGridTemplateAreasValue::CSSGridTemplateAreasValue(const NamedGridAreaMap& gridAreaMap, size_t rowCount, size_t columnCount)
    : CSSValue(GridTemplateAreasClass)
    , m_gridAreaMap(gridAreaMap)
    , m_rowCount(rowCount)
    , m_columnCount(columnCount)
{
    ASSERT(m_rowCount);
    ASSERT(m_columnCount);
}

static String stringForPosition(const NamedGridAreaMap& gridAreaMap, size_t row, size_t column)
{
    Vector<String> candidates;

    for (const auto& item : gridAreaMap) {
        const GridCoordinate& coordinate = item.value;
        if (row >= coordinate.rows.resolvedInitialPosition().toInt() && row < coordinate.rows.resolvedFinalPosition().toInt())
            candidates.append(item.key);
    }

    for (const auto& item : gridAreaMap) {
        const GridCoordinate& coordinate = item.value;
        if (column >= coordinate.columns.resolvedInitialPosition().toInt() && column < coordinate.columns.resolvedFinalPosition().toInt() && candidates.contains(item.key))
            return item.key;
    }

    return ".";
}

String CSSGridTemplateAreasValue::customCSSText() const
{
    StringBuilder builder;
    for (size_t row = 0; row < m_rowCount; ++row) {
        builder.append('\"');
        for (size_t column = 0; column < m_columnCount; ++column) {
            builder.append(stringForPosition(m_gridAreaMap, row, column));
            if (column != m_columnCount - 1)
                builder.append(' ');
        }
        builder.append('\"');
        if (row != m_rowCount - 1)
            builder.append(' ');
    }
    return builder.toString();
}

bool CSSGridTemplateAreasValue::equals(const CSSGridTemplateAreasValue& other) const
{
    return m_gridAreaMap == other.m_gridAreaMap && m_rowCount == other.m_rowCount && m_columnCount == other.m_columnCount;
}

} // namespace blink