import { ElementRef } from '@angular/core';
import * as i0 from "@angular/core";
/**
 * @internal
 */
export declare class SkyModalComponentAdapterService {
    #private;
    handleWindowChange(modalEl: ElementRef): void;
    isFocusInFirstItem(event: KeyboardEvent, list: HTMLElement[]): boolean;
    isFocusInLastItem(event: KeyboardEvent, list: HTMLElement[]): boolean;
    isModalFocused(event: KeyboardEvent, modalEl: ElementRef): boolean;
    focusLastElement(list: HTMLElement[]): boolean;
    focusFirstElement(list: HTMLElement[]): boolean;
    modalContentHasDirectChildViewkeeper(modalContentEl: ElementRef): boolean;
    static ɵfac: i0.ɵɵFactoryDeclaration<SkyModalComponentAdapterService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<SkyModalComponentAdapterService>;
}