451 lines
12 KiB
TypeScript
451 lines
12 KiB
TypeScript
import type {
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DataNode,
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FlattenNode,
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NodeElement,
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DataEntity,
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Key,
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EventDataNode,
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GetKey,
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FieldNames,
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} from '../interface';
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import { getPosition, isTreeNode } from '../util';
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import { warning } from '../../vc-util/warning';
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import Omit from 'omit.js';
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import type { VNodeChild } from 'vue';
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import type { TreeNodeProps } from '../props';
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export function getKey(key: Key, pos: string) {
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if (key !== null && key !== undefined) {
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return key;
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}
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return pos;
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}
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export function fillFieldNames(fieldNames?: FieldNames) {
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const { title, key, children } = fieldNames || {};
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return {
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title: title || 'title',
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key: key || 'key',
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children: children || 'children',
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};
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}
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/**
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* Warning if TreeNode do not provides key
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*/
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export function warningWithoutKey(treeData: DataNode[], fieldNames: FieldNames) {
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const keys: Map<string, boolean> = new Map();
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function dig(list: DataNode[], path = '') {
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(list || []).forEach(treeNode => {
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const key = treeNode[fieldNames.key];
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const children = treeNode[fieldNames.children];
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warning(
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key !== null && key !== undefined,
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`Tree node must have a certain key: [${path}${key}]`,
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);
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const recordKey = String(key);
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warning(
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!keys.has(recordKey) || key === null || key === undefined,
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`Same 'key' exist in the Tree: ${recordKey}`,
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);
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keys.set(recordKey, true);
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dig(children, `${path}${recordKey} > `);
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});
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}
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dig(treeData);
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}
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const cacheStringFunction = (fn: (s: string) => string) => {
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const cache = Object.create(null);
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return (str: string) => {
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const hit = cache[str];
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return hit || (cache[str] = fn(str));
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};
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};
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const camelizeRE = /-(\w)/g;
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const camelize = cacheStringFunction((str: string) => {
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return str.replace(camelizeRE, (_, c) => (c ? c.toUpperCase() : ''));
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});
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/**
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* Convert `children` of Tree into `treeData` structure.
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*/
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export function convertTreeToData(rootNodes: VNodeChild): DataNode[] {
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function dig(node: VNodeChild = []): DataNode[] {
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const treeNodes = node as NodeElement[];
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return treeNodes
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.map(treeNode => {
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// Filter invalidate node
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if (!isTreeNode(treeNode)) {
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warning(!treeNode, 'Tree/TreeNode can only accept TreeNode as children.');
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return null;
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}
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const slots = (treeNode.children as any) || {};
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const key = treeNode.key as string | number;
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const props: any = {};
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for (const [k, v] of Object.entries(treeNode.props)) {
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props[camelize(k)] = v;
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}
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const { isLeaf, checkable, selectable, disabled, disableCheckbox } = props;
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// 默认值为 undefined
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const newProps = {
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isLeaf: isLeaf || isLeaf === '' || undefined,
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checkable: checkable || checkable === '' || undefined,
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selectable: selectable || selectable === '' || undefined,
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disabled: disabled || disabled === '' || undefined,
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disableCheckbox: disableCheckbox || disableCheckbox === '' || undefined,
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};
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const slotsProps = { ...props, ...newProps };
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const {
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title = slots.title?.(slotsProps),
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icon = slots.icon?.(slotsProps),
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switcherIcon = slots.switcherIcon?.(slotsProps),
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...rest
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} = props;
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const children = slots.default?.();
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const dataNode: DataNode = {
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...rest,
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title,
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icon,
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switcherIcon,
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key,
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isLeaf,
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...newProps,
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};
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const parsedChildren = dig(children);
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if (parsedChildren.length) {
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dataNode.children = parsedChildren;
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}
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return dataNode;
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})
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.filter((dataNode: DataNode) => dataNode);
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}
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return dig(rootNodes);
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}
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/**
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* Flat nest tree data into flatten list. This is used for virtual list render.
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* @param treeNodeList Origin data node list
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* @param expandedKeys
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* need expanded keys, provides `true` means all expanded (used in `rc-tree-select`).
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*/
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export function flattenTreeData(
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treeNodeList: DataNode[],
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expandedKeys: Key[] | true,
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fieldNames: FieldNames,
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): FlattenNode[] {
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const { title: fieldTitle, key: fieldKey, children: fieldChildren } = fillFieldNames(fieldNames);
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const expandedKeySet = new Set(expandedKeys === true ? [] : expandedKeys);
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const flattenList: FlattenNode[] = [];
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function dig(list: DataNode[], parent: FlattenNode = null): FlattenNode[] {
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return list.map((treeNode, index) => {
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const pos: string = getPosition(parent ? parent.pos : '0', index);
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const mergedKey = getKey(treeNode[fieldKey], pos);
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// Add FlattenDataNode into list
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const flattenNode: FlattenNode = {
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...Omit(treeNode, [fieldTitle, fieldKey, fieldChildren] as any),
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title: treeNode[fieldTitle],
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key: mergedKey,
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parent,
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pos,
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children: null,
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data: treeNode,
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isStart: [...(parent ? parent.isStart : []), index === 0],
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isEnd: [...(parent ? parent.isEnd : []), index === list.length - 1],
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};
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flattenList.push(flattenNode);
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// Loop treeNode children
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if (expandedKeys === true || expandedKeySet.has(mergedKey)) {
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flattenNode.children = dig(treeNode[fieldChildren] || [], flattenNode);
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} else {
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flattenNode.children = [];
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}
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return flattenNode;
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});
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}
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dig(treeNodeList);
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return flattenList;
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}
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type ExternalGetKey = GetKey<DataNode> | string;
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interface TraverseDataNodesConfig {
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childrenPropName?: string;
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externalGetKey?: ExternalGetKey;
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fieldNames?: FieldNames;
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}
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/**
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* Traverse all the data by `treeData`.
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* Please not use it out of the `rc-tree` since we may refactor this code.
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*/
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export function traverseDataNodes(
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dataNodes: DataNode[],
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callback: (data: {
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node: DataNode;
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index: number;
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pos: string;
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key: Key;
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parentPos: string | number;
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level: number;
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}) => void,
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// To avoid too many params, let use config instead of origin param
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config?: TraverseDataNodesConfig | string,
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) {
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let mergedConfig: TraverseDataNodesConfig = {};
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if (typeof config === 'object') {
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mergedConfig = config;
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} else {
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mergedConfig = { externalGetKey: config };
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}
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mergedConfig = mergedConfig || {};
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// Init config
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const { childrenPropName, externalGetKey, fieldNames } = mergedConfig;
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const { key: fieldKey, children: fieldChildren } = fillFieldNames(fieldNames);
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const mergeChildrenPropName = childrenPropName || fieldChildren;
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// Get keys
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let syntheticGetKey: (node: DataNode, pos?: string) => Key;
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if (externalGetKey) {
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if (typeof externalGetKey === 'string') {
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syntheticGetKey = (node: DataNode) => (node as any)[externalGetKey as string];
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} else if (typeof externalGetKey === 'function') {
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syntheticGetKey = (node: DataNode) => (externalGetKey as GetKey<DataNode>)(node);
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}
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} else {
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syntheticGetKey = (node, pos) => getKey(node[fieldKey], pos);
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}
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// Process
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function processNode(
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node: DataNode,
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index?: number,
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parent?: { node: DataNode; pos: string; level: number },
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) {
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const children = node ? node[mergeChildrenPropName] : dataNodes;
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const pos = node ? getPosition(parent.pos, index) : '0';
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// Process node if is not root
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if (node) {
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const key: Key = syntheticGetKey(node, pos);
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const data = {
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node,
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index,
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pos,
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key,
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parentPos: parent.node ? parent.pos : null,
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level: parent.level + 1,
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};
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callback(data);
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}
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// Process children node
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if (children) {
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children.forEach((subNode, subIndex) => {
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processNode(subNode, subIndex, {
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node,
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pos,
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level: parent ? parent.level + 1 : -1,
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});
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});
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}
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}
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processNode(null);
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}
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interface Wrapper {
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posEntities: Record<string, DataEntity>;
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keyEntities: Record<Key, DataEntity>;
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}
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/**
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* Convert `treeData` into entity records.
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*/
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export function convertDataToEntities(
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dataNodes: DataNode[],
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{
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initWrapper,
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processEntity,
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onProcessFinished,
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externalGetKey,
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childrenPropName,
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fieldNames,
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}: {
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initWrapper?: (wrapper: Wrapper) => Wrapper;
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processEntity?: (entity: DataEntity, wrapper: Wrapper) => void;
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onProcessFinished?: (wrapper: Wrapper) => void;
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externalGetKey?: ExternalGetKey;
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childrenPropName?: string;
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fieldNames?: FieldNames;
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} = {},
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/** @deprecated Use `config.externalGetKey` instead */
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legacyExternalGetKey?: ExternalGetKey,
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) {
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// Init config
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const mergedExternalGetKey = externalGetKey || legacyExternalGetKey;
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const posEntities = {};
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const keyEntities = {};
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let wrapper = {
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posEntities,
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keyEntities,
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};
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if (initWrapper) {
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wrapper = initWrapper(wrapper) || wrapper;
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}
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traverseDataNodes(
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dataNodes,
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item => {
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const { node, index, pos, key, parentPos, level } = item;
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const entity: DataEntity = { node, index, key, pos, level };
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const mergedKey = getKey(key, pos);
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posEntities[pos] = entity;
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keyEntities[mergedKey] = entity;
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// Fill children
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entity.parent = posEntities[parentPos];
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if (entity.parent) {
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entity.parent.children = entity.parent.children || [];
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entity.parent.children.push(entity);
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}
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if (processEntity) {
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processEntity(entity, wrapper);
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}
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},
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{ externalGetKey: mergedExternalGetKey, childrenPropName, fieldNames },
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);
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if (onProcessFinished) {
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onProcessFinished(wrapper);
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}
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return wrapper;
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}
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export interface TreeNodeRequiredProps {
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expandedKeys: Key[];
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selectedKeys: Key[];
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loadedKeys: Key[];
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loadingKeys: Key[];
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checkedKeys: Key[];
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halfCheckedKeys: Key[];
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dragOverNodeKey: Key;
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dropPosition: number;
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keyEntities: Record<Key, DataEntity>;
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}
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/**
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* Get TreeNode props with Tree props.
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*/
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export function getTreeNodeProps(
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key: Key,
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{
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expandedKeys,
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selectedKeys,
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loadedKeys,
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loadingKeys,
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checkedKeys,
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halfCheckedKeys,
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dragOverNodeKey,
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dropPosition,
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keyEntities,
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}: TreeNodeRequiredProps,
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) {
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const entity = keyEntities[key];
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const treeNodeProps = {
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eventKey: key,
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expanded: expandedKeys.indexOf(key) !== -1,
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selected: selectedKeys.indexOf(key) !== -1,
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loaded: loadedKeys.indexOf(key) !== -1,
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loading: loadingKeys.indexOf(key) !== -1,
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checked: checkedKeys.indexOf(key) !== -1,
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halfChecked: halfCheckedKeys.indexOf(key) !== -1,
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pos: String(entity ? entity.pos : ''),
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// [Legacy] Drag props
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// Since the interaction of drag is changed, the semantic of the props are
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// not accuracy, I think it should be finally removed
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dragOver: dragOverNodeKey === key && dropPosition === 0,
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dragOverGapTop: dragOverNodeKey === key && dropPosition === -1,
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dragOverGapBottom: dragOverNodeKey === key && dropPosition === 1,
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};
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return treeNodeProps;
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}
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export function convertNodePropsToEventData(props: TreeNodeProps): EventDataNode {
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const {
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data,
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expanded,
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selected,
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checked,
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loaded,
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loading,
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halfChecked,
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dragOver,
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dragOverGapTop,
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dragOverGapBottom,
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pos,
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active,
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} = props;
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const eventData = {
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...data,
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expanded,
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selected,
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checked,
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loaded,
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loading,
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halfChecked,
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dragOver,
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dragOverGapTop,
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dragOverGapBottom,
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pos,
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active,
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dataRef: data,
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eventKey: data.key,
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};
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if (!('props' in eventData)) {
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Object.defineProperty(eventData, 'props', {
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get() {
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warning(
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false,
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'Second param return from event is node data instead of TreeNode instance. Please read value directly instead of reading from `props`.',
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);
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return props;
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},
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});
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}
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return eventData;
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}
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