TreeSelect树选择

树型选择控件。

何时使用#

类似 Select 的选择控件，可选择的数据结构是一个树形结构时，可以使用 TreeSelect，例如公司层级、学科系统、分类目录等等。

代码演示

Please select
基本

最简单的用法。

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import { TreeSelect } from 'infrad';
import React, { useState } from 'react';

const { TreeNode } = TreeSelect;

const App: React.FC = () => {
  const [value, setValue] = useState<string | undefined>(undefined);

  const onChange = (newValue: string) => {
    setValue(newValue);
  };

  return (
    <TreeSelect
      showSearch
      style={{ width: '100%' }}
      value={value}
      dropdownStyle={{ maxHeight: 400, overflow: 'auto' }}
      placeholder="Please select"
      allowClear
      treeDefaultExpandAll
      onChange={onChange}
    >
      <TreeNode value="parent 1" title="parent 1">
        <TreeNode value="parent 1-0" title="parent 1-0">
          <TreeNode value="leaf1" title="leaf1" />
          <TreeNode value="leaf2" title="leaf2" />
        </TreeNode>
        <TreeNode value="parent 1-1" title="parent 1-1">
          <TreeNode value="leaf3" title={<b style={{ color: '#08c' }}>leaf3</b>} />
        </TreeNode>
      </TreeNode>
    </TreeSelect>
  );
};

export default App;
Please select
从数据直接生成

使用 treeData 把 JSON 数据直接生成树结构。

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import { TreeSelect } from 'infrad';
import React, { useState } from 'react';

const treeData = [
  {
    title: 'Node1',
    value: '0-0',
    children: [
      {
        title: 'Child Node1',
        value: '0-0-1',
      },
      {
        title: 'Child Node2',
        value: '0-0-2',
      },
    ],
  },
  {
    title: 'Node2',
    value: '0-1',
  },
];

const App: React.FC = () => {
  const [value, setValue] = useState<string>();

  const onChange = (newValue: string) => {
    console.log(newValue);
    setValue(newValue);
  };

  return (
    <TreeSelect
      style={{ width: '100%' }}
      value={value}
      dropdownStyle={{ maxHeight: 400, overflow: 'auto' }}
      treeData={treeData}
      placeholder="Please select"
      treeDefaultExpandAll
      onChange={onChange}
    />
  );
};

export default App;
Please select
异步加载

异步加载树节点。

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import type { TreeSelectProps } from 'infrad';
import { TreeSelect } from 'infrad';
import type { DefaultOptionType } from 'infrad/es/select';
import React, { useState } from 'react';

const App: React.FC = () => {
  const [value, setValue] = useState<string>();
  const [treeData, setTreeData] = useState<Omit<DefaultOptionType, 'label'>[]>([
    { id: 1, pId: 0, value: '1', title: 'Expand to load' },
    { id: 2, pId: 0, value: '2', title: 'Expand to load' },
    { id: 3, pId: 0, value: '3', title: 'Tree Node', isLeaf: true },
  ]);

  const genTreeNode = (parentId: number, isLeaf = false) => {
    const random = Math.random().toString(36).substring(2, 6);
    return {
      id: random,
      pId: parentId,
      value: random,
      title: isLeaf ? 'Tree Node' : 'Expand to load',
      isLeaf,
    };
  };

  const onLoadData: TreeSelectProps['loadData'] = ({ id }) =>
    new Promise(resolve => {
      setTimeout(() => {
        setTreeData(
          treeData.concat([genTreeNode(id, false), genTreeNode(id, true), genTreeNode(id, true)]),
        );
        resolve(undefined);
      }, 300);
    });

  const onChange = (newValue: string) => {
    console.log(newValue);
    setValue(newValue);
  };

  return (
    <TreeSelect
      treeDataSimpleMode
      style={{ width: '100%' }}
      value={value}
      dropdownStyle={{ maxHeight: 400, overflow: 'auto' }}
      placeholder="Please select"
      onChange={onChange}
      loadData={onLoadData}
      treeData={treeData}
    />
  );
};

export default App;


Please select
弹出位置

可以通过 placement 手动指定弹出的位置。

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import type { RadioChangeEvent } from 'infrad';
import { Radio, TreeSelect } from 'infrad';
import type { SelectCommonPlacement } from 'infrad/es/_util/motion';
import React, { useState } from 'react';

const { TreeNode } = TreeSelect;

const App: React.FC = () => {
  const [placement, SetPlacement] = useState<SelectCommonPlacement>('topLeft');

  const placementChange = (e: RadioChangeEvent) => {
    SetPlacement(e.target.value);
  };

  return (
    <>
      <Radio.Group value={placement} onChange={placementChange}>
        <Radio.Button value="topLeft">topLeft</Radio.Button>
        <Radio.Button value="topRight">topRight</Radio.Button>
        <Radio.Button value="bottomLeft">bottomLeft</Radio.Button>
        <Radio.Button value="bottomRight">bottomRight</Radio.Button>
      </Radio.Group>
      <br />
      <br />

      <TreeSelect
        showSearch
        dropdownStyle={{ maxHeight: 400, overflow: 'auto', minWidth: 300 }}
        placeholder="Please select"
        dropdownMatchSelectWidth={false}
        placement={placement}
        allowClear
        treeDefaultExpandAll
      >
        <TreeNode value="parent 1" title="parent 1">
          <TreeNode value="parent 1-0" title="parent 1-0">
            <TreeNode value="leaf1" title="leaf1" />
            <TreeNode value="leaf2" title="leaf2" />
          </TreeNode>
          <TreeNode value="parent 1-1" title="parent 1-1">
            <TreeNode value="leaf3" title={<b style={{ color: '#08c' }}>leaf3</b>} />
          </TreeNode>
        </TreeNode>
      </TreeSelect>
    </>
  );
};

export default App;
Please select
多选

多选的树选择。

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import { TreeSelect } from 'infrad';
import React, { useState } from 'react';

const { TreeNode } = TreeSelect;

const App: React.FC = () => {
  const [value, setValue] = useState<string>();

  const onChange = (newValue: string) => {
    console.log(newValue);
    setValue(newValue);
  };

  return (
    <TreeSelect
      showSearch
      style={{ width: '100%' }}
      value={value}
      dropdownStyle={{ maxHeight: 400, overflow: 'auto' }}
      placeholder="Please select"
      allowClear
      multiple
      treeDefaultExpandAll
      onChange={onChange}
    >
      <TreeNode value="parent 1" title="parent 1">
        <TreeNode value="parent 1-0" title="parent 1-0">
          <TreeNode value="leaf1" title="my leaf" />
          <TreeNode value="leaf2" title="your leaf" />
        </TreeNode>
        <TreeNode value="parent 1-1" title="parent 1-1">
          <TreeNode value="sss" title={<b style={{ color: '#08c' }}>sss</b>} />
        </TreeNode>
      </TreeNode>
    </TreeSelect>
  );
};

export default App;
Node1
可勾选

使用勾选框实现多选功能。

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import { TreeSelect } from 'infrad';
import React, { useState } from 'react';

const { SHOW_PARENT } = TreeSelect;

const treeData = [
  {
    title: 'Node1',
    value: '0-0',
    key: '0-0',
    children: [
      {
        title: 'Child Node1',
        value: '0-0-0',
        key: '0-0-0',
      },
    ],
  },
  {
    title: 'Node2',
    value: '0-1',
    key: '0-1',
    children: [
      {
        title: 'Child Node3',
        value: '0-1-0',
        key: '0-1-0',
      },
      {
        title: 'Child Node4',
        value: '0-1-1',
        key: '0-1-1',
      },
      {
        title: 'Child Node5',
        value: '0-1-2',
        key: '0-1-2',
      },
    ],
  },
];

const App: React.FC = () => {
  const [value, setValue] = useState(['0-0-0']);

  const onChange = (newValue: string[]) => {
    console.log('onChange ', value);
    setValue(newValue);
  };

  const tProps = {
    treeData,
    value,
    onChange,
    treeCheckable: true,
    showCheckedStrategy: SHOW_PARENT,
    placeholder: 'Please select',
    style: {
      width: '100%',
    },
  };

  return <TreeSelect {...tProps} />;
};

export default App;
线性样式

通过 treeLine 配置线性样式。

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import { Space, Switch, TreeSelect } from 'infrad';
import React, { useState } from 'react';

const { TreeNode } = TreeSelect;

const App: React.FC = () => {
  const [treeLine, setTreeLine] = useState(true);
  const [showLeafIcon, setShowLeafIcon] = useState(false);

  return (
    <Space direction="vertical">
      <Switch
        checkedChildren="treeLine"
        unCheckedChildren="treeLine"
        checked={treeLine}
        onChange={() => setTreeLine(!treeLine)}
      />
      <Switch
        disabled={!treeLine}
        checkedChildren="showLeafIcon"
        unCheckedChildren="showLeafIcon"
        checked={showLeafIcon}
        onChange={() => setShowLeafIcon(!showLeafIcon)}
      />
      <TreeSelect treeLine={treeLine && { showLeafIcon }} style={{ width: 300 }}>
        <TreeNode value="parent 1" title="parent 1">
          <TreeNode value="parent 1-0" title="parent 1-0">
            <TreeNode value="leaf1" title="my leaf" />
            <TreeNode value="leaf2" title="your leaf" />
          </TreeNode>
          <TreeNode value="parent 1-1" title="parent 1-1">
            <TreeNode value="sss" title="sss" />
          </TreeNode>
        </TreeNode>
      </TreeSelect>
    </Space>
  );
};

export default App;
Error
Warning multiple
自定义状态

使用 status 为 TreeSelect 添加状态，可选 error 或者 warning。

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import { Space, TreeSelect } from 'infrad';
import React from 'react';

const App: React.FC = () => (
  <Space direction="vertical" style={{ width: '100%' }}>
    <TreeSelect status="error" style={{ width: '100%' }} placeholder="Error" />
    <TreeSelect
      status="warning"
      style={{ width: '100%' }}
      multiple
      placeholder="Warning multiple"
    />
  </Space>
);

export default App;
4.19.0

API#

Tree props#

参数说明类型默认值版本
allowClear显示清除按钮booleanfalse
autoClearSearchValue当多选模式下值被选择，自动清空搜索框booleantrue
bordered是否显示边框booleantrue
defaultValue指定默认选中的条目string | string[]-
disabled是否禁用booleanfalse
dropdownClassName下拉菜单的 className 属性string-
dropdownMatchSelectWidth下拉菜单和选择器同宽。默认将设置 min-width，当值小于选择框宽度时会被忽略。false 时会关闭虚拟滚动boolean | numbertrue
dropdownRender自定义下拉框内容(originNode: ReactNode, props) => ReactNode-
dropdownStyle下拉菜单的样式object-
fieldNames自定义节点 label、value、children 的字段object{ label: label, value: value, children: children }4.17.0
filterTreeNode是否根据输入项进行筛选，默认用 treeNodeFilterProp 的值作为要筛选的 TreeNode 的属性值boolean | function(inputValue: string, treeNode: TreeNode) (函数需要返回 bool 值)function
getPopupContainer菜单渲染父节点。默认渲染到 body 上，如果你遇到菜单滚动定位问题，试试修改为滚动的区域，并相对其定位。示例function(triggerNode)() => document.body
labelInValue是否把每个选项的 label 包装到 value 中，会把 value 类型从 string 变为 {value: string, label: ReactNode, halfChecked(treeCheckStrictly 时有效): string[] } 的格式booleanfalse
listHeight设置弹窗滚动高度number256
loadData异步加载数据function(node)-
maxTagCount最多显示多少个 tag，响应式模式会对性能产生损耗number | responsive-responsive: 4.10
maxTagPlaceholder隐藏 tag 时显示的内容ReactNode | function(omittedValues)-
multiple支持多选（当设置 treeCheckable 时自动变为 true）booleanfalse
notFoundContent当下拉列表为空时显示的内容ReactNodeNot Found
placeholder选择框默认文字string-
placement选择框弹出的位置bottomLeft bottomRight topLeft topRightbottomLeft
searchValue搜索框的值，可以通过 onSearch 获取用户输入string-
showArrow是否显示 suffixIcon，单选模式下默认 trueboolean-
showCheckedStrategy配置 treeCheckable 时，定义选中项回填的方式。TreeSelect.SHOW_ALL: 显示所有选中节点(包括父节点)。TreeSelect.SHOW_PARENT: 只显示父节点(当父节点下所有子节点都选中时)。 默认只显示子节点TreeSelect.SHOW_ALL | TreeSelect.SHOW_PARENT | TreeSelect.SHOW_CHILDTreeSelect.SHOW_CHILD
showSearch是否支持搜索框boolean单选：false | 多选：true
size选择框大小large | middle | small-
status设置校验状态'error' | 'warning'-4.19.0
suffixIcon自定义的选择框后缀图标, 多选模式下必须同时设置 showArrow 为 trueReactNode-
switcherIcon自定义树节点的展开/折叠图标ReactNode-
tagRender自定义 tag 内容，多选时生效(props) => ReactNode-
treeCheckable显示 Checkboxbooleanfalse
treeCheckStrictlycheckable 状态下节点选择完全受控（父子节点选中状态不再关联），会使得 labelInValue 强制为 truebooleanfalse
treeDatatreeNodes 数据，如果设置则不需要手动构造 TreeNode 节点（value 在整个树范围内唯一）array<{value, title, children, [disabled, disableCheckbox, selectable, checkable]}>[]
treeDataSimpleMode使用简单格式的 treeData，具体设置参考可设置的类型 (此时 treeData 应变为这样的数据结构: [{id:1, pId:0, value:'1', title:"test1",...},...]， pId 是父节点的 id)boolean | object<{ id: string, pId: string, rootPId: string }>false
treeDefaultExpandAll默认展开所有树节点booleanfalse
treeDefaultExpandedKeys默认展开的树节点string[]-
treeExpandAction点击节点 title 时的展开逻辑，可选：false | click | doubleClickstring | booleanfalse4.21.0
treeExpandedKeys设置展开的树节点string[]-
treeIcon是否展示 TreeNode title 前的图标，没有默认样式，如设置为 true，需要自行定义图标相关样式booleanfalse
treeLine是否展示线条样式，请参考 Tree - showLineboolean | objectfalse4.17.0
treeLoadedKeys（受控）已经加载的节点，需要配合 loadData 使用string[][]
treeNodeFilterProp输入项过滤对应的 treeNode 属性stringvalue
treeNodeLabelProp作为显示的 prop 设置stringtitle
value指定当前选中的条目string | string[]-
virtual设置 false 时关闭虚拟滚动booleantrue4.1.0
onChange选中树节点时调用此函数function(value, label, extra)-
onDropdownVisibleChange展开下拉菜单的回调function(open)-
onSearch文本框值变化时回调function(value: string)-
onSelect被选中时调用function(value, node, extra)-
onTreeExpand展示节点时调用function(expandedKeys)-

Tree 方法#

名称描述版本
blur()移除焦点
focus()获取焦点

TreeNode props#

建议使用 treeData 来代替 TreeNode，免去手工构造麻烦

参数说明类型默认值版本
checkable当树为 Checkbox 时，设置独立节点是否展示 Checkboxboolean-
disableCheckbox禁掉 Checkboxbooleanfalse
disabled是否禁用booleanfalse
isLeaf是否是叶子节点booleanfalse
key此项必须设置（其值在整个树范围内唯一）string-
selectable是否可选booleantrue
title树节点显示的内容ReactNode---
value默认根据此属性值进行筛选（其值在整个树范围内唯一）string-

FAQ#

onChange 时如何获得父节点信息？#

从性能角度考虑，我们默认不透出父节点信息。你可以这样获得：https://codesandbox.io/s/wk080nn81k

自定义 Option 样式导致滚动异常怎么办？#

请参考 Select 的 FAQ。