import { NgZone } from '@angular/core';
import { Observable } from 'rxjs';
export declare class KeyboardService {
    private zone;
    constructor(zone: NgZone);
    keyboardDidShow: Observable<any>;
    keyboardDidHide: Observable<any>;
    keyboardWillShow: Observable<any>;
    keyboardWillHide: Observable<any>;
    keyboardHeightWillChange: Observable<any>;
    shrinkView(bool: boolean): Observable<any>;
    hideFormAccessoryBar(bool: boolean): Observable<any>;
    disableScrollingInShrinkView(bool: boolean): Observable<any>;
    hide(): Observable<any>;
    show(): Observable<any>;
    isVisible(): Observable<any>;
    automaticScrollToTopOnHiding(bool: boolean): Observable<any>;
}