/**
 *
 *  Copyright (c) "Neo4j"
 *  Neo4j Sweden AB [http://neo4j.com]
 *
 *  This file is part of Neo4j.
 *
 *  Neo4j is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import { Selectors } from './selectors';
export type Config = {
    /** Enable debug logs */
    isDebug?: boolean;
    /** CSS Selectors being used to find Rows, Row Groups, Cells and Focusable elements */
    selectors?: Partial<typeof Selectors>;
    /** How many rows to move when pressing page up/down - Default goes to first/last row */
    pageUpDown?: number;
} | undefined;
export declare class DataGridNav {
    private selectors;
    readonly pageUpDown: number | undefined;
    private keys;
    private disabled;
    readonly debug: boolean;
    constructor();
    constructor(config: Config);
    private debugLog;
    /**
     * Disables the keyboard listener in cases
     * that elements inside the grid need to use
     * arrows keys etc., like select dropdowns
     */
    disable(): void;
    /**
     * Enables the keyboard listeners
     */
    enable(): void;
    private isFocusable;
    focusParentCell(el: Element): void;
    /** Used as a keyboard listener for key up */
    tableKeyUp(): void;
    /** Used as a keyboard listener for key down */
    tableKeyDown(e: KeyboardEvent): void;
    /**
     * Handles the navigation inside a cell
     */
    cellNavigation(e: KeyboardEvent): void;
    /**
     * Get the valid focusable child of a cell
     * @return {FocusableElement | null} - The valid focusable child, or null if there are none or multiple focusable children
     */
    private getValidFocusableChild;
    /**
     * Handles the navigation outside a cell
     * on the grid level
     */
    gridNavigation(e: KeyboardEvent): void;
    private pageCellNavigation;
    private verticalCellNavigation;
    /**
     * Sending a row `Element` and then the first cell will be focused.
     *
     * If you want to focus the last cell then the row children can be passed in
     * reversed order
     */
    private focusOnFirstCell;
    /**
     * Get the column index of a `cell` based on the first `row` parent.
     * `cellIndex` could be used, but it's not supported in HTML tables.
     */
    private getColumnIndex;
    /**
     * Get the row index of a `row` based
     * on its sibling rows
     */
    private getRowIndex;
    /**
     * Equivalent to prevUntil/nextUntil in jQuery
     * https://api.jquery.com/prevUntil/
     */
    private findUntil;
}