import { ElementViewModel } from '@devexpress/analytics-core/analytics-elements';
import { DragHelperContent, ISelectionTarget } from '@devexpress/analytics-core/analytics-internal';
import { UndoEngine } from '@devexpress/analytics-core/analytics-utils';
import { ITreeListItemViewModel } from '@devexpress/analytics-core/analytics-widgets-internal';
import { ObjectExplorerDragDropHelper } from './_objectExplorerDragDropHelper';
export declare class ReportControlsDragDropHelper extends ObjectExplorerDragDropHelper {
    private _dragHelperContent?;
    private _undoEngine?;
    private _isTargetContainer;
    private _serializer;
    private _tableControlTypes;
    private _restrictedTargets;
    private _canReorder;
    private _canInsertToTarget;
    private _targetIsClosestOfDraggable;
    private _canDrop;
    private _insertTableChildren;
    protected _shouldCheckAreas(): boolean;
    protected _getDroppableClassName(isInTopOrderArea: boolean, isInBottomOrderArea: boolean): string;
    updateLevels(targetModel: ElementViewModel): void;
    private _reorderBands;
    private _reorderTableControls;
    private _changeControlParent;
    constructor(_dragHelperContent?: DragHelperContent, _undoEngine?: UndoEngine);
    start(draggable: ITreeListItemViewModel): void;
    getSiblings(): ko.ObservableArray<any>;
    stop(): ISelectionTarget;
}