import { TableProps } from '../interfaces';
export interface HeaderRowColumn<T> {
  id: string;
  header?: React.ReactNode;
  colSpan: number;
  rowSpan: number;
  isGroup: boolean;
  columnDefinition?: TableProps.ColumnDefinition<T>;
  groupDefinition?: TableProps.GroupDefinition;
  parentGroupIds: string[];
  colIndex: number;
}
export interface HeaderRow<T> {
  columns: HeaderRowColumn<T>[];
}
export interface ColumnGroupsLayout<T> {
  rows: HeaderRow<T>[];
  maxDepth: number;
  columnToParentIds: Map<string, string[]>;
}
export interface TableHeaderNodeProps<T> {
  columnDefinition?: TableProps.ColumnDefinition<T>;
  groupDefinition?: TableProps.GroupDefinition;
  isRoot?: boolean;
  colSpan?: number;
  rowSpan?: number;
  rowIndex?: number;
  colIndex?: number;
}
/**
 * A node in the table header tree.
 * - Column nodes map to column definitions.
 * - Internal nodes map to group definitions.
 * - The root is a virtual container (never rendered).
 */
export declare class TableHeaderNode<T> {
  readonly id: string;
  readonly isRoot: boolean;
  readonly columnDefinition?: TableProps.ColumnDefinition<T>;
  readonly groupDefinition?: TableProps.GroupDefinition;
  colSpan: number;
  rowSpan: number;
  rowIndex: number;
  colIndex: number;
  subTreeHeight: number;
  children: TableHeaderNode<T>[];
  parent?: TableHeaderNode<T>;
  constructor(id: string, props?: TableHeaderNodeProps<T>);
  get isGroup(): boolean;
  get isColumn(): boolean;
  addChild(child: TableHeaderNode<T>): void;
}
export declare function calculateHierarchyTree<T>(columnDefinitions: ReadonlyArray<TableProps.ColumnDefinition<T>>, visibleColumnIds: readonly string[], groupDefinitions: ReadonlyArray<TableProps.GroupDefinition>, columnDisplay?: ReadonlyArray<TableProps.ColumnDisplayProperties>): ColumnGroupsLayout<T>;
export declare function getColumnGroupsDepth(columnDisplay?: ReadonlyArray<TableProps.ColumnDisplayProperties>): number;