import * as React from 'react';
import type { TimelineGridColumnType, TimelineGridCellCoordinates } from "../../models/timelineGrid.mjs";
export interface TimelineGridRootContext {
  /**
   * The coordinates of the cell that currently owns focus within the grid.
   * `null` when focus is outside the grid.
   */
  focusedCell: TimelineGridCellCoordinates | null;
  /**
   * Updates the focused cell coordinates.
   */
  setFocusedCell: (coordinates: TimelineGridCellCoordinates) => void;
  /**
   * Clears the focused cell only if it still matches the given coordinates.
   */
  clearFocusedCellIfMatches: (columnType: TimelineGridColumnType, rowIndex: number) => void;
  /**
   * The ordered list of column types that are rendered in the grid.
   * The non-empty tuple shape guarantees at least one column type at the type level.
   */
  columnTypes: readonly [TimelineGridColumnType, ...TimelineGridColumnType[]];
  /**
   * The total number of logical rows in the grid.
   * Used for keyboard navigation bounds checking (works with virtualization
   * where only a subset of rows are in the DOM).
   */
  totalRowCount: number;
}
export declare const DEFAULT_COLUMN_TYPES: readonly ["title", "events"];
export declare const TimelineGridRootContext: React.Context<TimelineGridRootContext | undefined>;
export declare function useTimelineGridRootContext(): TimelineGridRootContext;