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118 lines
8.5 KiB
Markdown
118 lines
8.5 KiB
Markdown
---
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category: Components
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group: Data Entry
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title: TreeSelect
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cover: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*DfTMRYSDngEAAAAAAAAAAAAADrJ8AQ/original
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demo:
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cols: 2
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---
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Tree selection control.
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## When To Use
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`TreeSelect` is similar to `Select`, but the values are provided in a tree like structure. Any data whose entries are defined in a hierarchical manner is fit to use this control. Examples of such case may include a corporate hierarchy, a directory structure, and so on.
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## Examples
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<!-- prettier-ignore -->
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<code src="./demo/basic.tsx">Basic</code>
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<code src="./demo/multiple.tsx">Multiple Selection</code>
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<code src="./demo/treeData.tsx">Generate from tree data</code>
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<code src="./demo/checkable.tsx">Checkable</code>
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<code src="./demo/async.tsx">Asynchronous loading</code>
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<code src="./demo/treeLine.tsx">Show Tree Line</code>
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<code src="./demo/placement.tsx">Placement</code>
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<code src="./demo/status.tsx">Status</code>
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<code src="./demo/suffix.tsx" debug>Suffix</code>
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<code src="./demo/render-panel.tsx" debug>_InternalPanelDoNotUseOrYouWillBeFired</code>
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## API
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### Tree props
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| allowClear | Whether allow clear | boolean | false | |
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| autoClearSearchValue | If auto clear search input value when multiple select is selected/deselected | boolean | true | |
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| bordered | Whether has border style | boolean | true | |
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| defaultValue | To set the initial selected treeNode(s) | string \| string\[] | - | |
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| disabled | Disabled or not | boolean | false | |
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| popupClassName | The className of dropdown menu | string | - | 4.23.0 |
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| dropdownMatchSelectWidth | Determine whether the dropdown menu and the select input are the same width. Default set `min-width` same as input. Will ignore when value less than select width. `false` will disable virtual scroll | boolean \| number | true | |
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| dropdownRender | Customize dropdown content | (originNode: ReactNode, props) => ReactNode | - | |
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| dropdownStyle | To set the style of the dropdown menu | CSSProperties | - | |
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| fieldNames | Customize node label, value, children field name | object | { label: `label`, value: `value`, children: `children` } | 4.17.0 |
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| filterTreeNode | Whether to filter treeNodes by input value. The value of `treeNodeFilterProp` is used for filtering by default | boolean \| function(inputValue: string, treeNode: TreeNode) (should return boolean) | function | |
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| getPopupContainer | To set the container of the dropdown menu. The default is to create a `div` element in `body`, you can reset it to the scrolling area and make a relative reposition. [example](https://codepen.io/afc163/pen/zEjNOy?editors=0010) | function(triggerNode) | () => document.body | |
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| labelInValue | Whether to embed label in value, turn the format of value from `string` to {value: string, label: ReactNode, halfChecked: string\[]} | boolean | false | |
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| listHeight | Config popup height | number | 256 | |
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| loadData | Load data asynchronously | function(node) | - | |
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| maxTagCount | Max tag count to show. `responsive` will cost render performance | number \| `responsive` | - | responsive: 4.10 |
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| maxTagPlaceholder | Placeholder for not showing tags | ReactNode \| function(omittedValues) | - | |
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| multiple | Support multiple or not, will be `true` when enable `treeCheckable` | boolean | false | |
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| notFoundContent | Specify content to show when no result matches | ReactNode | `Not Found` | |
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| placeholder | Placeholder of the select input | string | - | |
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| placement | The position where the selection box pops up | `bottomLeft` `bottomRight` `topLeft` `topRight` | bottomLeft | |
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| searchValue | Work with `onSearch` to make search value controlled | string | - | |
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| showArrow | Whether to show the `suffixIcon`，when single selection mode, default `true` | boolean | - | |
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| showCheckedStrategy | The way show selected item in box when `treeCheckable` set. **Default:** just show child nodes. **`TreeSelect.SHOW_ALL`:** show all checked treeNodes (include parent treeNode). **`TreeSelect.SHOW_PARENT`:** show checked treeNodes (just show parent treeNode) | `TreeSelect.SHOW_ALL` \| `TreeSelect.SHOW_PARENT` \| `TreeSelect.SHOW_CHILD` | `TreeSelect.SHOW_CHILD` | |
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| showSearch | Support search or not | boolean | single: false \| multiple: true | |
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| size | To set the size of the select input | `large` \| `middle` \| `small` | - | |
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| status | Set validation status | 'error' \| 'warning' | - | 4.19.0 |
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| suffixIcon | The custom suffix icon,you must set `showArrow` to `true` manually in multiple selection mode | ReactNode | - | |
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| switcherIcon | Customize collapse/expand icon of tree node | ReactNode \| ((props: AntTreeNodeProps) => ReactNode) | - | renderProps: 4.20.0 |
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| tagRender | Customize tag render when `multiple` | (props) => ReactNode | - | |
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| treeCheckable | Whether to show checkbox on the treeNodes | boolean | false | |
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| treeCheckStrictly | Whether to check nodes precisely (in the `checkable` mode), means parent and child nodes are not associated, and it will make `labelInValue` be true | boolean | false | |
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| treeData | Data of the treeNodes, manual construction work is no longer needed if this property has been set(ensure the Uniqueness of each value) | array<{ value, title, children, \[disabled, disableCheckbox, selectable, checkable] }> | \[] | |
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| treeDataSimpleMode | Enable simple mode of treeData. Changes the `treeData` schema to: \[{id:1, pId:0, value:'1', title:"test1",...},...] where pId is parent node's id). It is possible to replace the default `id` and `pId` keys by providing object to `treeDataSimpleMode` | boolean \| object<{ id: string, pId: string, rootPId: string }> | false | |
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| treeDefaultExpandAll | Whether to expand all treeNodes by default | boolean | false | |
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| treeDefaultExpandedKeys | Default expanded treeNodes | string\[] | - | |
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| treeExpandAction | Tree title open logic when click, optional: false \| `click` \| `doubleClick` | string \| boolean | false | 4.21.0 |
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| treeExpandedKeys | Set expanded keys | string\[] | - | |
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| treeIcon | Shows the icon before a TreeNode's title. There is no default style; you must set a custom style for it if set to `true` | boolean | false | |
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| treeLoadedKeys | (Controlled) Set loaded tree nodes, work with `loadData` only | string[] | [] | |
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| treeLine | Show the line. Ref [Tree - showLine](/components/tree/#components-tree-demo-line) | boolean \| object | false | 4.17.0 |
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| treeNodeFilterProp | Will be used for filtering if `filterTreeNode` returns true | string | `value` | |
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| treeNodeLabelProp | Will render as content of select | string | `title` | |
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| value | To set the current selected treeNode(s) | string \| string\[] | - | |
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| virtual | Disable virtual scroll when set to false | boolean | true | 4.1.0 |
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| onChange | A callback function, can be executed when selected treeNodes or input value change | function(value, label, extra) | - | |
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| onDropdownVisibleChange | Called when dropdown open | function(open) | - | |
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| onSearch | A callback function, can be executed when the search input changes | function(value: string) | - | |
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| onSelect | A callback function, can be executed when you select a treeNode | function(value, node, extra) | - | |
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| onTreeExpand | A callback function, can be executed when treeNode expanded | function(expandedKeys) | - | |
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### Tree Methods
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| Name | Description | Version |
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| ------- | ------------ | ------- |
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| blur() | Remove focus | |
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| focus() | Get focus | |
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### TreeNode props
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> We recommend you to use `treeData` rather than `TreeNode`, to avoid the trouble of manual construction.
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
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| checkable | When Tree is checkable, set TreeNode display Checkbox or not | boolean | - | |
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| disableCheckbox | Disables the checkbox of the treeNode | boolean | false | |
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| disabled | Disabled or not | boolean | false | |
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| isLeaf | Leaf node or not | boolean | false | |
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| key | Required property (unless using `treeDataSimpleMode`), should be unique in the tree | string | - | |
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| selectable | Whether can be selected | boolean | true | |
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| title | Content showed on the treeNodes | ReactNode | `---` | |
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| value | Will be treated as `treeNodeFilterProp` by default, should be unique in the tree | string | - | |
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## FAQ
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### How to get parent node in onChange?
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We don't provide this since performance consideration. You can get by this way: <https://codesandbox.io/s/wk080nn81k>
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### Why sometime customize Option cause scroll break?
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You can ref Select [FAQ](/components/select).
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