import { EventEmitter } from '@angular/core';
import { DragAndDropService, DragAndDropEvent } from '../drag-and-drop.service';
import { Draggable } from './draggable';
export declare class DropZone {
    private _service;
    readonly id: number;
    readonly element: HTMLElement;
    constructor(_service: DragAndDropService, id: number, element: HTMLElement);
    enabled: boolean;
    dragging_over: boolean;
    children: Array<Draggable>;
    restriction: string | string[];
    onEnter: EventEmitter<DragAndDropEvent>;
    onLeave: EventEmitter<DragAndDropEvent>;
    onDrop: EventEmitter<DragAndDropEvent>;
    onRemove: EventEmitter<DragAndDropEvent>;
    $onEnter: EventEmitter<DragEvent>;
    $onLeave: EventEmitter<DragEvent>;
    $onDrop: EventEmitter<DragEvent>;
    setEnabled(enabled: boolean): void;
    setDraggingOver(dragging_over: boolean): void;
    setRestriction(restriction: string | string[]): void;
    setDraggableChildren(children: Array<Draggable>): void;
    destroy(): void;
    private _onDragEnter;
    private _onDragOver;
    private _onDrop;
}