index.vue
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<template>
<PageWrapper title="Tree基础示例">
<div class="flex">
<BasicTree
:treeData="treeData"
title="基础示例，默认展开第一层"
defaultExpandLevel="1"
class="w-1/3"
/>
<BasicTree
:treeData="treeData"
title="可勾选，默认全部展开"
:checkable="true"
class="w-1/3 mx-4"
defaultExpandAll
@check="handleCheck"
/>
<BasicTree
title="指定默认展开/勾选示例"
:treeData="treeData"
:checkable="true"
:expandedKeys="['0-0']"
:checkedKeys="['0-0']"
class="w-1/3"
/>
</div>
<div class="flex">
<BasicTree
title="异步树"
ref="asyncTreeRef"
:treeData="tree"
class="w-1/3"
:load-data="onLoadData"
/>
</div>
</PageWrapper>
</template>
<script lang="ts">
import { defineComponent, ref, unref } from 'vue';
import { BasicTree, TreeActionType } from '/@/components/Tree/index';
import { treeData } from './data';
import { PageWrapper } from '/@/components/Page';
export default defineComponent({
components: { BasicTree, PageWrapper },
setup() {
const asyncTreeRef = ref<Nullable<TreeActionType>>(null);
function handleCheck(checkedKeys, e) {
console.log('onChecked', checkedKeys, e);
}
const tree = ref([
{
title: 'parent ',
key: '0-0',
},
]);
function onLoadData(treeNode) {
return new Promise((resolve: (value?: unknown) => void) => {
if (!treeNode.children) {
resolve();
return;
}
setTimeout(() => {
const asyncTreeAction: TreeActionType | null = unref(asyncTreeRef);
if (asyncTreeAction) {
const nodeChildren = [
{ title: `Child Node ${treeNode.eventKey}-0`, key: `${treeNode.eventKey}-0` },
{ title: `Child Node ${treeNode.eventKey}-1`, key: `${treeNode.eventKey}-1` },
];
asyncTreeAction.updateNodeByKey(treeNode.eventKey, { children: nodeChildren });
asyncTreeAction.setExpandedKeys([
treeNode.eventKey,
...asyncTreeAction.getExpandedKeys(),
]);
}
resolve();
return;
}, 1000);
});
}
return { treeData, handleCheck, tree, onLoadData, asyncTreeRef };
},
});
</script>