2018-06-04 11:20:17 +08:00
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import * as React from 'react';
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2018-07-30 12:05:29 +08:00
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import { getNodeChildren, convertTreeToEntities } from 'rc-tree/lib/util';
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import { AntTreeNodeProps } from './Tree';
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2018-06-04 11:20:17 +08:00
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enum Record {
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None,
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Start,
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End,
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}
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2018-07-30 12:05:29 +08:00
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// TODO: Move this logic into `rc-tree`
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2018-12-07 16:17:45 +08:00
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function traverseNodesKey(
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rootChildren: React.ReactNode | React.ReactNode[],
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callback: (key: string | number | null) => boolean,
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) {
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const nodeList: React.ReactNode[] = getNodeChildren(rootChildren) || [];
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2018-07-30 12:05:29 +08:00
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function processNode(node: React.ReactElement<AntTreeNodeProps>) {
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2018-12-07 16:17:45 +08:00
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const {
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key,
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props: { children },
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} = node;
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2018-07-30 12:05:29 +08:00
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if (callback(key) !== false) {
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traverseNodesKey(children, callback);
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}
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}
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nodeList.forEach(processNode);
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}
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export function getFullKeyList(children: React.ReactNode | React.ReactNode[]) {
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const { keyEntities } = convertTreeToEntities(children);
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return Object.keys(keyEntities);
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}
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2018-06-04 11:20:17 +08:00
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/** 计算选中范围,只考虑expanded情况以优化性能 */
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2018-12-07 16:17:45 +08:00
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export function calcRangeKeys(
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rootChildren: React.ReactNode | React.ReactNode[],
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expandedKeys: string[],
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startKey?: string,
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endKey?: string,
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): string[] {
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2018-06-04 11:20:17 +08:00
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const keys: string[] = [];
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let record: Record = Record.None;
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if (startKey && startKey === endKey) {
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return [startKey];
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}
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if (!startKey || !endKey) {
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return [];
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}
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function matchKey(key: string) {
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return key === startKey || key === endKey;
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}
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2018-07-30 12:05:29 +08:00
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traverseNodesKey(rootChildren, (key: string) => {
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2018-06-04 11:20:17 +08:00
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if (record === Record.End) {
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return false;
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}
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if (matchKey(key)) {
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// Match test
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keys.push(key);
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if (record === Record.None) {
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record = Record.Start;
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} else if (record === Record.Start) {
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record = Record.End;
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return false;
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}
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} else if (record === Record.Start) {
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// Append selection
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keys.push(key);
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}
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if (expandedKeys.indexOf(key) === -1) {
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return false;
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}
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2018-07-30 12:05:29 +08:00
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return true;
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2018-06-04 11:20:17 +08:00
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});
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return keys;
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}
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