import { NgZone } from '@angular/core';
import { Observable } from 'rxjs';
import { KitSlideDirection, KitSlideId } from './meta';
/**
 * ### Usage
 *
 * Provide `KitSlideHostService` on a component and add `*kitSlide` to slides.
 *
 * ```html
 * <div (click)="rotate()">
 *   <div *kitSlide>Slide 1</div>
 *   <div *kitSlide>Slide 2</div>
 *   <div *kitSlide>Slide 3</div>
 * </div>
 * ```
 *
 * Use `KitSlideHostService` for state changing.
 *
 * ```typescript
 * providers[KitSlideHostService],
 * ...
 * constructor(private slideHost: KitSlideHostService) {
 * }
 * ...
 * rotate() {
 *   this.slideHost.rotate();
 * }
 * ```
 *
 *
 * ### Example
 *
 * * collection:carousel -
 * [sources](https://github.com/ngx-kit/ngx-kit/tree/master/packages/collection/lib/ui-carousel),
 * [demo](http://ngx-kit.com/collection/module/ui-carousel)
 * * collection:tabs - [sources](https://github.com/ngx-kit/ngx-kit/tree/master/packages/collection/lib/ui-tabs),
 * [demo](http://ngx-kit.com/collection/module/ui-tabs)
 */
export declare class KitSlideHostService {
    private zone;
    /**
     * Activate first slide on init.
     */
    activateFirst: boolean;
    private _active;
    private _direction;
    private firstRegistration;
    private ids;
    private lastId;
    constructor(zone: NgZone);
    /**
     * Get active slide id.
     */
    /**
    * Set active side by id.
    */
    active: KitSlideId;
    /**
     * Set active and emit only 'initial' direction.
     */
    activeInitial: KitSlideId;
    /**
     * Get `Observable` with active slide id.
     */
    readonly activeChanges: Observable<KitSlideId>;
    /**
     * Get `Observable` with direction of slide changing (next, prev).
     */
    readonly directionChanges: Observable<KitSlideDirection>;
    /**
     * Register slide.
     */
    addId(id: KitSlideId): void;
    /**
     * Delete slide.
     */
    deleteId(id: KitSlideId): void;
    /**
     * Generate slide id.
     */
    genId(): number;
    /**
     * Activate next slide.
     */
    next(cycle?: boolean): void;
    /**
     * Activate prev slide.
     */
    prev(cycle?: boolean): void;
    private getCurrentIndex;
    private getIndex;
}