<template>
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<PageWrapper title="Tree基础示例">
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<Row :gutter="[16, 16]">
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<Col :span="8">
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<BasicTree title="基础示例，默认展开第一层" :treeData="treeData" defaultExpandLevel="1" />
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</Col>
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<Col :span="8">
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<BasicTree title="可勾选，默认全部展开" :treeData="treeData" :checkable="true" defaultExpandAll @check="handleCheck" />
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</Col>
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<Col :span="8">
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<BasicTree title="指定默认展开/勾选示例" :treeData="treeData" :checkable="true" :expandedKeys="['0-0']" :checkedKeys="['0-0']" />
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</Col>
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<Col :span="8">
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<BasicTree title="懒加载异步树" ref="asyncTreeRef" :treeData="tree" :load-data="onLoadData" />
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</Col>
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<Col :span="8">
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<Card title="异步数据，默认展开">
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<template #extra>
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<a-button @click="loadTreeData" :loading="treeLoading">加载数据</a-button>
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</template>
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<Spin :spinning="treeLoading">
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<BasicTree ref="asyncExpandTreeRef" :treeData="tree2" />
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</Spin>
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</Card>
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</Col>
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<Col :span="8">
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<Card title="BasicTree内置加载">
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<template #extra>
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<a-button @click="loadTreeData2" :loading="treeLoading">请求数据</a-button>
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</template>
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<BasicTree ref="loadTreeRef" :treeData="tree2" :loading="treeLoading" />
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</Card>
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</Col>
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</Row>
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</PageWrapper>
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</template>
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<script lang="ts">
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import { defineComponent, nextTick, ref, unref } from 'vue';
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import { BasicTree, TreeActionType, TreeItem } from '/@/components/Tree/index';
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import { treeData } from './data';
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import { PageWrapper } from '/@/components/Page';
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import { Card, Row, Col, Spin } from 'ant-design-vue';
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import { cloneDeep, uniq } from 'lodash-es';
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import { isArray } from '/@/utils/is';
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export default defineComponent({
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name: 'system-testtree',
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components: { BasicTree, PageWrapper, Card, Row, Col, Spin },
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setup() {
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const asyncTreeRef = ref<Nullable<TreeActionType>>(null);
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const asyncExpandTreeRef = ref<Nullable<TreeActionType>>(null);
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const loadTreeRef = ref<Nullable<TreeActionType>>(null);
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const tree2 = ref<TreeItem[]>([]);
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const treeLoading = ref(false);
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function handleCheck(checkedKeys, e) {
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console.log('onChecked', checkedKeys, e);
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}
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function loadTreeData() {
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treeLoading.value = true;
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// 以下是模拟异步获取数据
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setTimeout(() => {
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// 设置数据源
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tree2.value = cloneDeep(treeData);
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treeLoading.value = false;
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// 展开全部
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nextTick(() => {
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console.log(unref(asyncExpandTreeRef));
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unref(asyncExpandTreeRef)?.expandAll(true);
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});
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}, 2000);
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}
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function loadTreeData2() {
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treeLoading.value = true;
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// 以下是模拟异步获取数据
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setTimeout(() => {
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// 设置数据源
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tree2.value = cloneDeep(treeData);
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treeLoading.value = false;
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}, 2000);
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}
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const tree = ref([
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{
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title: 'parent ',
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key: '0-0',
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},
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]);
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function onLoadData(treeNode) {
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return new Promise((resolve: (value?: unknown) => void) => {
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if (isArray(treeNode.children) && treeNode.children.length > 0) {
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resolve();
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return;
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}
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setTimeout(() => {
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const asyncTreeAction: TreeActionType | null = unref(asyncTreeRef);
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if (asyncTreeAction) {
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const nodeChildren = [
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{ title: `Child Node ${treeNode.eventKey}-0`, key: `${treeNode.eventKey}-0` },
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{ title: `Child Node ${treeNode.eventKey}-1`, key: `${treeNode.eventKey}-1` },
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];
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asyncTreeAction.updateNodeByKey(treeNode.eventKey, { children: nodeChildren });
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asyncTreeAction.setExpandedKeys(uniq([treeNode.eventKey, ...asyncTreeAction.getExpandedKeys()]));
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}
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resolve();
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return;
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}, 300);
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});
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}
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return {
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treeData,
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handleCheck,
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tree,
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onLoadData,
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asyncTreeRef,
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asyncExpandTreeRef,
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loadTreeRef,
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tree2,
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loadTreeData,
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treeLoading,
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loadTreeData2,
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};
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},
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});
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</script>
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