import { Observable } from "rxjs/Rx";
import { OnInit, EventEmitter, ComponentFactoryResolver, ViewContainerRef } from "@angular/core";
export declare let TOOLTIP_ARGS: any;
export declare class Tooltip implements OnInit {
    private cr;
    private vcr;
    tooltipDep: any;
    trigger: string;
    placement: string;
    tooltipCtrl: EventEmitter<Tooltip>;
    tooltipContent: any;
    private controller;
    constructor(cr: ComponentFactoryResolver, vcr: ViewContainerRef);
    ngOnInit(): void;
    show(): void;
    hide(): void;
    tooltip: any;
    _show(element: any): Observable<PopoverElement>;
}
export declare function isBlank(obj: any): boolean;
export declare function forEach(obj: any, callback: (v: any, k: string) => void): void;
export declare function isElement(o: any): boolean;
export interface PopoverElement {
    show(): void;
    hide(): void;
    destroy(): void;
    onShow(callback: () => any): void;
    onHide(callback: () => any): void;
}