import { TreeListItemViewModel } from '../widgets/treelist/_treelistItem';
import { AccessibilityControlElementBase } from './_controlElementBase';
import { ListKeyboardHelper } from './_listKeyboardHelper';
export declare class TreeListKeyboardHelper extends ListKeyboardHelper {
    private _rootHolder;
    controlElementClassName: string;
    constructor(_rootHolder: {
        root: TreeListItemViewModel;
    });
    private _setFocusToParentNode;
    private _toggleCollapsed;
    private _toggleSelected;
    private _getItemModel;
    createControlElement(element: HTMLElement, index?: number): AccessibilityControlElementBase;
    itemHandleLeftArrowKey(e: KeyboardEvent, index: number): boolean;
    itemHandleRightArrowKey(e: KeyboardEvent, index: number): boolean;
    itemHandleEnterKey(e: KeyboardEvent, index: number): boolean;
    itemHandleSpaceKey(e: KeyboardEvent, index: number): boolean;
    clickHandler(e: Event, index: number): void;
}