custom-app/dhcc-app-dll/node_modules/rc-table/es/TableHeader.js

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import React from 'react';
import PropTypes from 'prop-types';
import TableHeaderRow from './TableHeaderRow';

function getHeaderRows(columns) {
  var currentRow = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
  var rows = arguments[2];

  rows = rows || [];
  rows[currentRow] = rows[currentRow] || [];

  columns.forEach(function (column) {
    if (column.rowSpan && rows.length < column.rowSpan) {
      while (rows.length < column.rowSpan) {
        rows.push([]);
      }
    }
    var cell = {
      key: column.key,
      className: column.className || '',
      children: column.title,
      column: column
    };
    if (column.children) {
      getHeaderRows(column.children, currentRow + 1, rows);
    }
    if ('colSpan' in column) {
      cell.colSpan = column.colSpan;
    }
    if ('rowSpan' in column) {
      cell.rowSpan = column.rowSpan;
    }
    if (cell.colSpan !== 0) {
      rows[currentRow].push(cell);
    }
  });
  return rows.filter(function (row) {
    return row.length > 0;
  });
}

export default function TableHeader(props, _ref) {
  var table = _ref.table;
  var components = table.components;
  var _table$props = table.props,
      prefixCls = _table$props.prefixCls,
      showHeader = _table$props.showHeader,
      onHeaderRow = _table$props.onHeaderRow;
  var expander = props.expander,
      columns = props.columns,
      fixed = props.fixed;


  if (!showHeader) {
    return null;
  }

  var rows = getHeaderRows(columns);

  expander.renderExpandIndentCell(rows, fixed);

  var HeaderWrapper = components.header.wrapper;

  return React.createElement(
    HeaderWrapper,
    { className: prefixCls + '-thead' },
    rows.map(function (row, index) {
      return React.createElement(TableHeaderRow, {
        prefixCls: prefixCls,
        key: index,
        index: index,
        fixed: fixed,
        columns: columns,
        rows: rows,
        row: row,
        components: components,
        onHeaderRow: onHeaderRow
      });
    })
  );
}

TableHeader.propTypes = {
  fixed: PropTypes.string,
  columns: PropTypes.array.isRequired,
  expander: PropTypes.object.isRequired,
  onHeaderRow: PropTypes.func
};

TableHeader.contextTypes = {
  table: PropTypes.any
};