import { ElementRef, Renderer } from '@angular/core';
import { OnDestroy, OnInit } from '@angular/core';
import { DropService } from '../services';
export declare class DropTarget implements OnInit, OnDestroy {
    private _dropService;
    private renderer;
    private static _ref_cnt;
    private static listeners;
    target: string;
    indicate: string;
    stream: string;
    private _element;
    private _unreg;
    constructor(elementRef: ElementRef, _dropService: DropService, renderer: Renderer);
    ngOnInit(): void;
    ngOnChanges(changes: any): void;
    ngOnDestroy(): void;
    private _doHighlight(state);
}