Forms
TreeSelect
Selects nodes from a branching hierarchy inside a dropdown.
01
See it and copy it
Framework example
Choose Astro, React, or Elements to compare native usage against the shared visual output. Each example assumes the framework-level setup is already complete.
View TreeSelect code
Framework usage
Switch targets to compare the adapter code. This live preview runs the Astro example. React and Elements use their own behavior APIs; complete the matching framework setup before copying an example.---
import { TreeSelect } from '@santi020k/lumen-astro'
---
<TreeSelect placeholder="Select node" treeData={[{ label: 'Root', value: 'root', children: [{ label: 'Child', value: 'child' }] }]} />import { TreeSelect } from '@santi020k/lumen-react'
export const Example = () => (
<>
<TreeSelect placeholder="Select node" treeData={[{ label: 'Root', value: 'root', children: [{ label: 'Child', value: 'child' }] }]} />
</>
)<script type="module">
import { defineLumenElements } from '@santi020k/lumen-elements/define'
defineLumenElements()
</script>
<lumen-tree-select placeholder="Select node" tree-data={[{ label: 'Root', value: 'root', children: [{ label: 'Child', value: 'child' }] }]}></lumen-tree-select>02
Choose your target
Add this component
Choose the package for your runtime. All adapters share the Lumen stylesheet. Use the matching registry command when you want a local wrapper for that framework.
pnpm add @santi020k/lumen-astropnpm add @santi020k/lumen-astrolumen add TreeSelectlumen add TreeSelectpnpm add @santi020k/lumen-reactpnpm add @santi020k/lumen-reactlumen add TreeSelect --target reactlumen add TreeSelect --target reactpnpm add @santi020k/lumen-elementspnpm add @santi020k/lumen-elementslumen add TreeSelect --target elementslumen add TreeSelect --target elementsAPI reference
Lumen-specific props and runtime attributes for the Astro primitive. Use the framework differences above and the copyable examples for React composition and Elements attributes; the public adapter types define their supported contracts.
| Attribute | Values | Default | Description |
|---|---|---|---|
| treeData | TreeNode[] | [] | Defines the selectable hierarchy. |
| name | string | - | Sets the submitted field name. |
| placeholder | string | "Select" | Sets the trigger text before a node is selected. |
| class, className | string | "" | Merges custom classes with the generated ui-* root classes. |
| ...native attributes | HTML attributes | - | Forwards standard attributes to the root element unless the component consumes them. |
Runtime events
CustomEvents dispatched by the Astro UIPrimitives runtime for this component.
| Event | Target | Detail | When |
|---|---|---|---|
| ui:tree-select-change | TreeSelect root ([data-ui-tree-select]) | { value: string } | Fires after a tree item is selected and committed to the hidden input. |