/**
 * @license
 *-------------------------------------------------------------------------------------------
 * Copyright © 2026 Progress Software Corporation. All rights reserved.
 * Licensed under commercial license. See LICENSE.md in the package root for more information
 *-------------------------------------------------------------------------------------------
 */
import { ExtendedColumnProps } from '../interfaces/ExtendedColumnProps';
import { GridCellRenderModel } from '../interfaces/GridCellRenderModel';
/**
 * @hidden
 * Pure function to get all parent column indices up to the root
 */
export declare function getParentIndices(columns: ExtendedColumnProps[], columnIndex: number): number[];
/**
 * @hidden
 * Pure function to add all ancestors of given parent indices
 */
export declare function addAllAncestors(columns: ExtendedColumnProps[], parentIndices: number[], allVisibleIndices: Set<number>): void;
/**
 * @hidden
 * Pure function to add all children and descendants of a column
 */
export declare function addDescendants(columns: ExtendedColumnProps[], colIdx: number, allVisibleIndices: Set<number>): void;
/**
 * @hidden
 * Calculate which columns to render and their colSpans for virtualized header/filter rows
 */
export declare function getVirtualHeaderCellsToRender(args: {
    cellsToRender: GridCellRenderModel[];
    columns: ExtendedColumnProps[];
    rowIndex: number;
    enableVirtualization?: boolean;
    columnsMap?: number[][];
}): {
    columnsToRender: number[];
    colSpans: number[];
    skipOffset?: boolean;
};
/**
 * @hidden
 */
export declare function getVirtualCellsToRender(args: {
    cellModels: GridCellRenderModel[];
    columns: ExtendedColumnProps[];
    tableViewPortWidth: number;
    scrollLeft: number;
}): GridCellRenderModel[];