import { OnDestroy } from '@angular/core';
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
export declare class DragService<T = unknown> implements OnDestroy {
    /** Emit when dragging begins */
    onDragStart: Subject<UxDragEvent<T>>;
    /** Emit when dragging moves */
    onDrag: Subject<UxDragEvent<T>>;
    /** Emit when dragging ends */
    onDragEnd: Subject<UxDragEvent<T>>;
    /** Emit when the user is dragging over the drop area */
    onDropEnter: Subject<void>;
    /** Emit when the user is dragging out of the drop area */
    onDropLeave: Subject<void>;
    /** Emit when a drop occurs */
    onDrop: Subject<T>;
    /** Destroy all observables */
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DragService<any>, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DragService<any>>;
}
export type UxDragEvent<T = unknown> = {
    group?: string;
    event?: MouseEvent;
    data?: T;
};