import { ReactiveController, ReactiveElement } from 'lit';
export interface AriaGrid {
    grid: HTMLElement;
    columnRowGroup: HTMLElement;
    columnRow: HTMLElement;
    columns: NodeListOf<HTMLElement>;
    rowGroup: HTMLElement;
    rows: NodeListOf<HTMLElement>;
    cells: NodeListOf<HTMLElement>;
    footerRowGroup?: HTMLElement;
    footerRow?: HTMLElement;
    footerCells?: NodeListOf<HTMLElement>;
    placeholderCell?: HTMLElement;
}
export declare type AriaGridConfig = {
    update: 'mutation' | 'slot';
};
/**
 * Provides all nessesary role/aria-* attributes to create a vaild aria grid
 * https://www.w3.org/TR/wai-aria-practices/examples/grid/dataGrids.html
 */
export declare function ariaGrid<T extends ReactiveElement & AriaGrid>(config?: AriaGridConfig): ClassDecorator;
export declare class AriaGridController<T extends ReactiveElement & AriaGrid> implements ReactiveController {
    private host;
    private config;
    private observers;
    private grid;
    constructor(host: T, config?: AriaGridConfig);
    hostConnected(): Promise<void>;
    hostDisconnected(): void;
    update(): void;
    private intializeColumnSort;
    private initializeGrid;
    private intializeColumns;
    private initializeRows;
    /**
     * If cell has focusable items NVDA will go into forms mode (expected behavior)
     * Use table navigation ctrl+alt+arrow to move in and out of cells
     * https://github.com/nvaccess/nvda/issues/7718
     */
    private initializeCells;
    private initializePlaceholder;
    private intializeFooter;
    /**
     * Only visible columnheader text should be read to SRs but Safari/VO and NVDA violates the spec
     * and deep merges any labeled content within the header even if hidden or interactive.
     * This will apply a patch to force Safari and NVDA to read only the provided aria-label
     *
     * https://github.com/nvaccess/nvda/issues/10096
     * https://github.com/nvaccess/nvda/issues/9017
     * https://github.com/nvaccess/nvda/pull/12763
     * https://github.com/nvaccess/nvda/issues/12392
     * https://github.com/nvaccess/nvda/issues/6826
     * https://github.com/nvaccess/nvda/issues/11181
     */
    private patchInvalidScreenReaderBehavior;
}