import { default as ColumnModel } from './columnModel';
import { default as GridModel } from './gridModel';
import { default as GroupRowModel } from './groupRowModel';
/**
 * How a cell participates in a group row's layout:
 * - `grouping`  — the expand/label cell (spans the grouped data columns)
 * - `selection` — the select-all checkbox cell
 * - `spacer`    — a leading/other-pinned cell rendered with its own value (row number, detail, opposite pin)
 * - `hidden`    — a data column on the grouping side, absorbed into the grouping cell's column span
 */
export type GroupRowCellKind = 'grouping' | 'selection' | 'spacer' | 'hidden';
export default class GroupRowCellModel<TRow> {
    readonly grid: GridModel<TRow>;
    readonly row: GroupRowModel<TRow>;
    readonly column: ColumnModel<TRow>;
    constructor(grid: GridModel<TRow>, row: GroupRowModel<TRow>, column: ColumnModel<TRow>);
    get value(): string | number | null;
    get cellKind(): GroupRowCellKind;
    get depthPadding(): number;
    get gridColumnSpan(): number;
    get widthVar(): string;
    get isRightPinned(): boolean;
    /** Grouping cell shows a right border only when the grouping column is left-pinned. */
    get hasGroupingBorder(): boolean;
}