import React from 'react';
import { TreeProps, TreeState, LatestTreeNodeProps, TreeNodesStates, DisabledTreeNode, FlatTreeData, AnyObject, CheckKeysInfo, CheckedKeysObj, TreeData, FlatTreeKeysMap, TreeStore } from './iTree';
declare function noop(): void;
declare class Tree extends React.Component<TreeProps, TreeState> {
    static defaultProps: {
        clsPrefix: string;
        blockNode: boolean;
        showLine: boolean;
        showIcon: boolean;
        selectable: boolean;
        multiple: boolean;
        checkable: boolean;
        checkStrictly: boolean;
        draggable: boolean;
        autoExpandParent: boolean;
        defaultExpandAll: boolean;
        defaultExpandedKeys: never[];
        defaultCheckedKeys: never[];
        defaultSelectedKeys: never[];
        onExpand: typeof noop;
        onCheck: typeof noop;
        onSelect: typeof noop;
        onDragStart: typeof noop;
        onDragEnter: typeof noop;
        onDragOver: typeof noop;
        onDragLeave: typeof noop;
        onDrop: typeof noop;
        onDragEnd: typeof noop;
        tabIndexValue: number;
        lazyLoad: boolean;
        autoSelectWhenFocus: boolean;
        getScrollContainer: typeof noop;
        expandWhenDoubleClick: boolean;
        getCheckboxAttrs: typeof noop;
        fieldid: string;
        syncCheckedAndSelectedStatus: boolean;
        disabled: boolean;
        icon: null;
        inverse: boolean;
        fieldNames: {
            title: string;
            key: string;
            children: string;
        };
        dragDelayExpandTime: number;
    };
    contextmenuKeys: string[];
    latestTreeNode: LatestTreeNodeProps;
    checkedKeysChange: boolean;
    selectKeyDomPos: string;
    autoExpandKeys: string[] | null;
    rowsInView: number;
    loadCount: number;
    flatTreeKeysMap: FlatTreeKeysMap;
    startIndex: number;
    endIndex: number;
    cacheTreeNodes: React.ReactElement[];
    disabledTreeNodes: DisabledTreeNode[];
    store: TreeStore;
    latestState: boolean | null;
    cachedLatestState: boolean | null;
    treeNodesStates: TreeNodesStates;
    lazyLoadAllChildren: React.ReactElement[];
    lazyLoadTreeNodesStates: TreeNodesStates;
    checkedKeys: string[];
    dragNodesKeys: string[];
    treeNodesStatesKeysInfo: Partial<AnyObject>;
    checkKeys: CheckKeysInfo | undefined;
    _checkedKeys: string[] | undefined;
    dropPosition: number | undefined;
    _rawExpandedKeys: string[] | undefined;
    hasCalculateRowHeight: boolean;
    tree: HTMLUListElement | null;
    dragNode: React.ReactElement;
    _dropTrigger: boolean;
    cacheExpandedKeys: Set<string> | null;
    halfCheckedKeys: string[];
    selectKeyDomExist: boolean;
    dataChange: boolean;
    timer: ReturnType<typeof setTimeout> | undefined;
    constructor(props: TreeProps);
    componentDidMount(): void;
    hasTreeNode: () => boolean;
    UNSAFE_componentWillMount(): void;
    UNSAFE_componentWillReceiveProps(nextProps: TreeProps): void;
    componentDidUpdate(): void;
    componentWillUnmount(): void;
    isRootNode: (node: React.ReactElement) => boolean;
    calculateRowHeight: () => void;
    onDragStart(e: React.DragEvent, treeNode: React.ReactElement): void;
    onDragEnterGap(e: React.DragEvent, treeNode: any): 1 | 0 | -1;
    onDragEnter(e: React.DragEvent, treeNode: React.ReactElement): void;
    onDragOver(e: React.DragEvent, treeNode: React.ReactElement): void;
    onDragLeave(e: React.DragEvent, treeNode: React.ReactElement): void;
    onDrop(e: React.DragEvent, treeNode: React.ReactElement): false | undefined;
    onDragEnd(e: React.DragEvent, treeNode: React.ReactElement): void;
    /**
     *
     *
     * @param {*} treeNode 当前操作的节点
     * @param {*} keyType 键盘事件通用的key类型 left 为收起，right为展开
     * @returns
     * @memberof Tree
     */
    onExpand(treeNode: React.ReactElement, keyType?: string, e?: React.MouseEvent | React.KeyboardEvent): undefined | Promise<any>;
    getCheckedKeys: (keys?: string[]) => string[];
    onCheck: (treeNode: React.ReactElement, event?: React.MouseEvent | React.KeyboardEvent) => void;
    onSelect(treeNode: React.ReactElement, event: React.MouseEvent | React.KeyboardEvent): void;
    onDoubleClick(treeNode: React.ReactElement, e: React.MouseEvent | React.KeyboardEvent): void;
    onMouseEnter(e: React.MouseEvent, treeNode: React.ReactElement): void;
    onMouseLeave(e: React.MouseEvent, treeNode: React.ReactElement): void;
    onContextMenu(e: React.MouseEvent, treeNode: React.ReactElement): void;
    goDown(currentPos: string, currentIndex: string, e: React.KeyboardEvent, treeNode: React.ReactElement): void;
    goUp(currentPos: string, currentIndex: string, e: React.KeyboardEvent): void;
    onKeyDown: (e: React.KeyboardEvent, treeNode: React.ReactElement) => void;
    _setDataTransfer(e: React.KeyboardEvent): void;
    _focusDom: (selectKeyDomPos: string, targetDom: HTMLElement) => void;
    /**
     * 此方法为了解决树快捷键，当有的元素隐藏，按tab键也要显示的问题
     * @param {*} e
     */
    onUlFocus: (e: React.FocusEvent<HTMLUListElement>) => void;
    getFilterExpandedKeys(props: TreeProps, expandKeyProp: string, expandAll: boolean): string[];
    getDefaultExpandedKeys(props: TreeProps, willReceiveProps?: boolean): string[] | undefined;
    getDefaultCheckedKeys(props: TreeProps, willReceiveProps?: boolean): string[] | CheckedKeysObj | undefined;
    getDefaultSelectedKeys(props: TreeProps, willReceiveProps?: boolean): string[] | undefined;
    getRawExpandedKeys(): void;
    getOpenTransitionName(): string | undefined;
    getDragNodes(treeNode: React.ReactElement): string[];
    getExpandedKeys(treeNode: React.ReactElement, expand: boolean): string[] | undefined;
    filterTreeNode(treeNode: React.ReactElement): boolean;
    /**
     * 将截取后的 List 数组转换为 Tree 结构，并更新 state
     */
    handleTreeListChange: (treeList: FlatTreeData[], startIndex?: number, endIndex?: number) => void;
    /**
     * 深度遍历 treeData，把Tree数据拍平，变为一维数组
     * @param {*} treeData
     * @param {*} parentKey 标识父节点
     * @param {*} isShown 该节点是否显示在页面中，当节点的父节点是展开状态 或 该节点是根节点时，该值为 true
     */
    deepTraversal: (treeData?: TreeData[], parentKey?: string | null, isShown?: boolean) => FlatTreeData[];
    /**
     * 根据 treeData 渲染树节点
     * @param data 树形结构的数组
     * @param preHeight 前置占位高度
     * @param sufHeight 后置占位高度
     */
    renderTreefromData: (data: TreeData[]) => JSX.Element[];
    /**
     * @description 计算懒加载时的前置占位和后置占位
     * @param start {Number} 开始截取数据的位置
     * @param end {Number} 结束截取数据的位置
     * @return sumHeight {Number} 空白占位的高度
     */
    getSumHeight: (start: number, end: number) => number;
    renderTreeNode: (child: React.ReactElement, index: number, level?: number) => React.ReactElement<any, string | React.JSXElementConstructor<any>> | null;
    render(): JSX.Element;
}
export default Tree;