import { Injector, ElementRef, ViewContainerRef } from '@angular/core';
import { Overlay } from '@angular/cdk/overlay';
import { ComponentPortal, TemplatePortal } from '@angular/cdk/portal';
import { LayerRef, LayerConfig } from '../layer/index';
import { TooltipComponent } from './tooltip.component';
import { TooltipInlineComponent } from './tooltip-inline.component';
export declare class TooltipDirective extends LayerRef {
    private viewContainerRef;
    private elementRef;
    private overlay;
    constructor(injector: Injector, viewContainerRef: ViewContainerRef, elementRef: ElementRef, overlay: Overlay);
    private mouseOverEmitter;
    tooltipTrigger: import("rxjs").Subscription;
    tooltip: string | TooltipComponent;
    position: 'left' | 'right' | 'top' | 'bottom';
    arrowPointer: boolean;
    showDelay: number;
    hideDelay: number;
    offset: number;
    onMouseEnter(): void;
    onMouseLeave(): void;
    protected getLayerConfig(): LayerConfig;
    createPortal(): TemplatePortal<any> | ComponentPortal<TooltipInlineComponent>;
}