1# Tree
2 
3Hierarchical tree view
4 
5**Parts:** `TreeRoot`, `TreeItem`, `TreeVirtualizer`
6 
7## TreeRoot
8 
9### Props
10| Prop | Type | Default |
11|------|------|---------|
12| `as` | `AsTag \| Component` | `"ul"` |
13| `asChild` | `boolean` | - |
14| `defaultExpanded` | `string[]` | - |
15| `defaultValue` | `Record<string, any> \| Record<string, any>[]` | - |
16| `dir` | `"ltr" \| "rtl"` | - |
17| `disabled` | `boolean` | - |
18| `expanded` | `string[]` | - |
19| `getChildren` | `((val: Record<string, any>) => Record<string, a...` | `val.children` |
20| `getKey`* | `(val: Record<string, any>) => string` | - |
21| `items` | `Record<string, any>[]` | - |
22| `modelValue` | `Record<string, any> \| Record<string, any>[]` | - |
23| `multiple` | `boolean` | - |
24| `propagateSelect` | `boolean` | - |
25| `selectionBehavior` | `"toggle" \| "replace"` | `"toggle"` |
26 
27### Emits
28| Event | Payload |
29|-------|---------|
30| `update:expanded` | `[val: string[]]` |
31| `update:modelValue` | `[val: Record<string, any>]` |
32 
33### Slots
34| Slot | Type |
35|------|------|
36| `flattenItems` | `FlattenedItem<Record<string, any>>[]` |
37| `modelValue` | `Record<string, any> \| Record<string, any>[]` |
38| `expanded` | `string[]` |
39 
40## TreeItem
41 
42### Props
43| Prop | Type | Default |
44|------|------|---------|
45| `as` | `AsTag \| Component` | `"li"` |
46| `asChild` | `boolean` | - |
47| `level`* | `number` | - |
48| `value`* | `Record<string, any>` | - |
49 
50### Emits
51| Event | Payload |
52|-------|---------|
53| `select` | `[event: SelectEvent<Record<string, any>>]` |
54| `toggle` | `[event: ToggleEvent<Record<string, any>>]` |
55 
56### Slots
57| Slot | Type |
58|------|------|
59| `isExpanded` | `boolean` |
60| `isSelected` | `boolean` |
61| `isIndeterminate` | `boolean \| undefined` |
62| `handleToggle` | `` |
63| `handleSelect` | `` |
64 
65## TreeVirtualizer
66 
67### Props
68| Prop | Type | Default |
69|------|------|---------|
70| `estimateSize` | `number` | - |
71| `textContent` | `((item: Record<string, any>) => string)` | - |
72 
73### Slots
74| Slot | Type |
75|------|------|
76| `item` | `FlattenedItem<Record<string, any>>` |
77| `virtualizer` | `Virtualizer<Element \| Window, Element>` |
78| `virtualItem` | `VirtualItem<Element>` |
79