import type { TreeNodeData } from '@primereact/types/headless/tree';
/**
 * Registered by the source tree at `startDrag`; the destination invokes it on a
 * committed drop so the source can drop the node and fire its `onMove`.
 */
export type SourceCommitHandler = (originalEvent: React.DragEvent) => void;
type DragState = {
    isDragging: boolean;
    dragNode: TreeNodeData | null;
    dragScope: string | string[] | null;
    dragNodeSubNodes: TreeNodeData[] | null;
    dragNodeIndex: number | null;
    sourceTreeId: string | null;
    /** Source-tree commit hook. Invoked by the destination tree on a successful drop. */
    sourceCommit: SourceCommitHandler | null;
};
type DragEvent = {
    node: TreeNodeData;
    scope?: string | string[] | null;
    subNodes?: TreeNodeData[];
    index?: number;
    sourceTreeId?: string;
    sourceCommit?: SourceCommitHandler;
};
export declare const TreeDragDropService: {
    getDragState(): DragState;
    startDrag(event: DragEvent): void;
    stopDrag(event: DragEvent): void;
    onDragStart(handler: (event: DragEvent) => void): () => boolean;
    onDragStop(handler: (event: DragEvent) => void): () => boolean;
};
export {};