import type { Styled } from '../../hooks/useStyled';
import type { AbstractTreeNode } from '../node/abstract-node';
import type { TreeItem } from '../types';
import type { CLASSES } from '../vars';
export interface TreePanelRef<V extends React.Key, T extends TreeItem<V>> {
    handleKeyDown: (code: any) => AbstractTreeNode<V, T> | undefined;
    scrollToItem: (el: HTMLElement, key: React.Key) => AbstractTreeNode<V, T> | undefined;
}
interface TreePanelProps<V extends React.Key, T extends TreeItem<V>> extends Omit<React.HTMLAttributes<HTMLUListElement>, 'children'> {
    ref?: React.Ref<TreePanelRef<V, T>>;
    namespace: string;
    styled: Styled<typeof CLASSES>;
    list: AbstractTreeNode<V, T>[];
    itemId: (value: V) => string;
    itemSelected: AbstractTreeNode<V, T> | undefined;
    itemFocused: AbstractTreeNode<V, T> | undefined;
    expands: Set<V>;
    customItem: ((item: T) => React.ReactNode) | undefined;
    showLine: boolean;
    multiple: boolean;
    onlyLeafSelectable: boolean;
    disabled: boolean;
    virtual: {
        listSize: number;
        listPadding: number;
        itemSize?: number;
    } | undefined;
    focusVisible: boolean;
    onNodeFocus: (node: AbstractTreeNode<V, T>) => void;
    onNodeExpand: (node: AbstractTreeNode<V, T>) => void;
    onNodeClick: (node: AbstractTreeNode<V, T>) => void;
    onScrollBottom: (() => void) | undefined;
}
export declare function TreePanel<V extends React.Key, T extends TreeItem<V>>(props: TreePanelProps<V, T>): React.ReactElement | null;
export {};