import { KeyProvider } from '../../model/CommonTypes.ts';
import { TreeChildrenProvider } from './TreeModel.ts';

export declare const defaultTreeChildrenProvider: <T>(item: T) => (T[] | undefined);
export declare class TreeRowStatuses<T> {
    expanded: Set<string>;
    selected: Set<T>;
    focused?: T;
}
export type TreeRowSelectEvent<T> = {
    row: T;
    selected: boolean;
    multiSelect: boolean;
    veto?: boolean;
};
export declare class TreeKeyboardHandler<T> {
    private dataProvider;
    private treeRowStatuses;
    private keyProvider;
    private childrenProvider;
    private isMultiSelect;
    private selectRow;
    constructor(dataProvider: () => T[], treeRowStatuses: TreeRowStatuses<T>, keyProvider: KeyProvider<T>, childrenProvider: TreeChildrenProvider<T>, isMultiSelect: () => boolean, selectRow: (event: TreeRowSelectEvent<T>) => void);
    handleKeyDown(event: KeyboardEvent): void;
    moveFocused(item: T): void;
    clearFocus(): void;
    private getCurrentItem;
    private findTreeItemContext;
    private findNextSiblingOfParent;
    private findExpandedLastDescendant;
}