import { ElementRef, EventEmitter, Renderer2, ChangeDetectorRef } from '@angular/core';
import { AnimationBuilder } from '@angular/animations';
export declare class AtFadeDirective {
    private _renderer;
    private _element;
    private _changeDetectorRef;
    private _animationBuilder;
    private _state;
    private _defaultDisplay;
    private _animationFadeInPlayer;
    private _animationFadeOutPlayer;
    /**
     * duration?: number
     * Sets duration of fade animation in milliseconds.
     * Defaults to 150 ms.
     */
    duration: number;
    /**
     * atFade: boolean
     * Fades element, FadesOut if its 'true', FadesIn if its 'false'.
     */
    state: boolean;
    /**
     * fadeIn?: function
     * Method to be executed when fadeIn animation ends.
     */
    onFadeIn: EventEmitter<void>;
    /**
     * fadeOut?: function
     * Method to be executed when fadeOut animation ends.
     */
    onFadeOut: EventEmitter<void>;
    /**
     * Binds native 'aria-expanded' attribute.
     */
    readonly ariaExpandedBinding: boolean;
    /**
     * Binds native 'aria-hidden' attribute.
     */
    readonly ariaHiddenBinding: boolean;
    constructor(_renderer: Renderer2, _element: ElementRef, _changeDetectorRef: ChangeDetectorRef, _animationBuilder: AnimationBuilder);
    /**
     * Hides element: starts animation and adds "display:'none'" style at the end.
     */
    hide(): void;
    /**
     * Shows element: sets "display:[default]" so animation is shown.
     */
    show(): void;
    private _onFadeInDone();
    private _onFadeOutDone();
}