import { ElementRef, Renderer2, InjectionToken } from '@angular/core';
export declare const TE_NAVIGATORS: InjectionToken<AbstractNavigator>;
/**
 * An enumerator that reflect the possible movements that happen within a table.
 */
export declare enum NavigationAction {
    Up = "up",
    Right = "right",
    Down = "down",
    Left = "left",
    Exit = "exit"
}
/**
 * An abstract base class that can be used to implement a navigator, allowing for interactions between the UI and [TableEditorDirective]{@link TableEditorDirective}. See the [README section]{@link /documentation/classes/AbstractNavigator.html#readme} on this page on how to implement one, or check out the source code of [KeyboardNavigator]{@link documentation/classes/KeyboardNavigator.html#source} for more detailed information.
 */
export declare abstract class AbstractNavigator {
    protected renderer: Renderer2;
    protected tableElementRef: ElementRef<HTMLTableElement>;
    private actionParser;
    constructor(renderer: Renderer2, tableElementRef: ElementRef<HTMLTableElement>, actionParser: (action: NavigationAction | undefined) => void);
    /**
     * A method that should be called to instruct the Table Editor to move in a certain direction.
     * @returns void
     */
    protected execute(action: NavigationAction | undefined): void;
    /**
     * When a TableEditorDirective is instantiated, it will call ([in the onInit lifecycle]{@link TableEditorDirective#ngOnInit}) `listener` of all navigators associated with the instance.
     * @returns () => void the unregister function for the listeners that have been registered.
     */
    abstract listener(): () => void;
}