import { IJQueryWrapper } from '@devexpress/analytics-core/analytics-internal-native';
import { ReorderTreeListDragDropHelper } from '@devexpress/analytics-core/analytics-widgets-internal';
export declare abstract class ObjectExplorerDragDropHelper extends ReorderTreeListDragDropHelper {
    private _orderingAreaHeight;
    protected _isInTopOrderArea(targetElement: IJQueryWrapper, mouseLocationY?: number): boolean;
    protected _isInBottomOrderArea(targetElement: IJQueryWrapper, mouseLocationY?: number): boolean;
    protected _getDroppableClassName(isInTopOrderArea: boolean, isInBottomOrderArea: boolean): string;
    protected _shouldCheckAreas(): boolean;
    setNewDropTarget(elementModel: any, element: HTMLElement, mouseLocationY?: number): void;
}