import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class VgControlsHidden {
    isHidden: Observable<boolean>;
    private isHiddenSubject;
    constructor();
    state(hidden: boolean): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<VgControlsHidden, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<VgControlsHidden>;
}