import { ProseMirror } from '../../prosemirror';
export declare type ImageUploadDropHandler = (pm: ProseMirror, e: DragEvent) => boolean;
export default class DropAdapter {
    pm: ProseMirror;
    handlers: ImageUploadDropHandler[];
    dropHandler: Function;
    constructor(pm: ProseMirror);
    add(handler: ImageUploadDropHandler): void;
    remove(handler: ImageUploadDropHandler): void;
    detach(): void;
    __dropHandler__(e: DragEvent): boolean;
}