/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
/**
 * @hidden
 *
 * Provided per ListView instance. Keeps the availability, active index and focused state of the current ListView.
 * Emits `changes` when any of the aforementioned states changes.
 */
export declare class NavigationService {
    /**
     * Emits every time a change in active index/focus/blur/navigation availability occurs.
     */
    changes: Subject<any>;
    /**
     * Sets or gets if the navigation is enabled.
     * When no activeIndex is present, the navigation is inferred as disabled.
     * Toggling the service availability clears the current active index or activates the first one.
     */
    get isEnabled(): boolean;
    set isEnabled(enabled: boolean);
    /**
     * Specifies if a ListView item currently holds focus.
     */
    isFocused: boolean;
    /**
     * Keeps track of the index of the items that should be the current focus target (tabindex="0").
     * When set to `null`/`undefined`, the navigation is disabled and the items should not render a tabindex.
     */
    activeIndex: number;
    /**
     * Shows if the checked index should be the current available focus target (tabindex="0").
     */
    isActive(index: number): boolean;
    handleKeyDown(event: KeyboardEvent, totalItemsCount: number): void;
    handleFocusIn(event: FocusEvent): void;
    handleFocusOut(event: FocusEvent): void;
    /**
     * Sets the `activeIndex` and triggers changes without focusing the corresponding ListView item.
     */
    setActiveIndex(index: number): void;
    /**
     * Focuses item at the targeted index. If no index is passed, the current `activeIndex` is used.
     * The passed target index is normalized to fit the min/max available indices bounds.
     */
    focusIndex(index: any, totalItemsCount: number): void;
    private navigateTo;
    private navigateToPrevious;
    private navigateToNext;
    static ɵfac: i0.ɵɵFactoryDeclaration<NavigationService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<NavigationService>;
}