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

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#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) {
  for (const auto& item : gridAreaMap) {
    const GridArea& area = item.value;
    if (row >= area.rows.startLine() && row < area.rows.endLine() &&
        column >= area.columns.startLine() && column < area.columns.endLine())
      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