/**
 * @Author: Stephen von Takack
 * @Date:   13/09/2016 2:55 PM
 * @Email:  steve@acaprojects.com
 * @Filename: drop-files.spec.ts
 * @Last modified by:   Alex Sorafumo
 * @Last modified time: 15/12/2016 11:37 AM
 */
export declare class DropService {
    private static _streams;
    private static _observers;
    private static _streamMapping;
    private static _callbacks;
    event: any;
    private _dropTargets;
    private _currentTarget;
    private _event_subjects;
    private _event;
    private _listeners;
    private _counter;
    constructor();
    ngOnDestroy(): void;
    register(name: string, element: HTMLElement, callback: (state: boolean) => void): () => void;
    pushFiles(stream: string, files: any): void;
    getStream(name: string): any;
    private _ensureStream;
    private _preventDefault;
    private _checkTarget;
    private _findStream;
    private _performCallback;
    private _updateClasses;
    private _removeClass;
    private _notifyObservers;
}