{
  "$schema": "https://ui.shadcn.com/schema/registry-item.json",
  "name": "tree-06",
  "title": "Renamable tree",
  "description": "Press F2 or Rename to edit the focused row in place, then it glides to its new place in the alphabet.",
  "dependencies": [
    "@base-ui/react",
    "@headless-tree/core",
    "motion"
  ],
  "registryDependencies": [
    "https://ui.ndekocode.dev/r/button.json",
    "https://ui.ndekocode.dev/r/icons.json",
    "https://ui.ndekocode.dev/r/input.json",
    "https://ui.ndekocode.dev/r/kbd.json",
    "https://ui.ndekocode.dev/r/live-region.json",
    "https://ui.ndekocode.dev/r/motion-presets.json",
    "https://ui.ndekocode.dev/r/theme.json",
    "https://ui.ndekocode.dev/r/tree.json",
    "https://ui.ndekocode.dev/r/use-prefers-reduced-motion.json",
    "https://ui.ndekocode.dev/r/utils.json"
  ],
  "files": [
    {
      "path": "registry/ndeko/components/tree/tree-06.tsx",
      "content": "'use client';\n\nimport {\n  hotkeysCoreFeature,\n  renamingFeature,\n  selectionFeature,\n  syncDataLoaderFeature,\n  type ItemInstance,\n} from '@headless-tree/core';\nimport { useEffect, useState } from 'react';\n\nimport { PencilIcon } from '@/registry/ndeko/lib/icons';\nimport { Button } from '@/registry/ndeko/ui/button';\nimport { Input } from '@/registry/ndeko/ui/input';\nimport { Kbd } from '@/registry/ndeko/ui/kbd';\nimport { LiveRegion } from '@/registry/ndeko/ui/live-region';\nimport { Tree, TreeItemLabel, useTree } from '@/registry/ndeko/ui/tree';\n\nimport {\n  flattenBranches,\n  isFlatFolder,\n  nameOf,\n  type Branch,\n  type FlatNode,\n  type FlatNodes,\n} from './_parts/tree-data';\nimport { EntryGlyph } from './_parts/tree-glyphs';\nimport { TreeRow, TreeRows } from './_parts/tree-rows';\n\nconst LIBRARY: Branch = {\n  id: 'library',\n  name: 'Corvale research library',\n  children: [\n    {\n      id: 'competitors',\n      name: 'Competitors',\n      children: [\n        { id: 'pricing-pages', name: 'Pricing pages' },\n        { id: 'teardown-notes', name: 'Teardown notes' },\n        { id: 'win-and-loss-calls', name: 'Win and loss calls' },\n      ],\n    },\n    {\n      id: 'interviews',\n      name: 'Interviews',\n      children: [\n        { id: 'churn-round', name: 'Churn round' },\n        { id: 'onboarding-round', name: 'Onboarding round' },\n        { id: 'pilot-debriefs', name: 'Pilot debriefs' },\n      ],\n    },\n    { id: 'market-sizing', name: 'Market sizing' },\n    { id: 'reading-list', name: 'Reading list' },\n  ],\n};\n\nconst LIBRARY_AT_START = flattenBranches(LIBRARY);\n\nconst OPEN_AT_START = ['interviews'];\n\nconst FOCUSED_AT_START = 'churn-round';\n\n/* A field inside a button loses its spaces and its clicks in some browsers, so the row being renamed is a plain element. */\nconst ROW_BEING_RENAMED = <div />;\n\n/* A line of 20px is what the rename field takes once its margins are counted, so a row keeps its height when it opens. */\nconst LABEL_AS_TALL_AS_THE_FIELD = 'leading-5';\n\nfunction byNameIn(nodes: FlatNodes) {\n  return function compareNames(firstId: string, secondId: string) {\n    const firstName = nodes[firstId].name;\n    const secondName = nodes[secondId].name;\n    return firstName.localeCompare(secondName);\n  };\n}\n\nfunction elementOf(row: ItemInstance<FlatNode>) {\n  if (row.isRenaming()) {\n    return ROW_BEING_RENAMED;\n  }\n  return undefined;\n}\n\nfunction keepClickInField(event: React.MouseEvent) {\n  event.stopPropagation();\n}\n\nfunction selectWholeName(event: React.FocusEvent<HTMLInputElement>) {\n  event.target.select();\n}\n\ntype RowNameProps = {\n  row: ItemInstance<FlatNode>;\n};\n\nfunction RowName({ row }: RowNameProps) {\n  const name = row.getItemName();\n\n  if (!row.isRenaming()) {\n    return <span className='truncate'>{name}</span>;\n  }\n  return (\n    <Input\n      {...row.getRenameInputProps()}\n      aria-label={`New name for ${name}`}\n      onClick={keepClickInField}\n      onFocus={selectWholeName}\n      className='-my-1 h-7 flex-1 px-1.5'\n    />\n  );\n}\n\nexport default function Tree06() {\n  const [nodes, setNodes] = useState(LIBRARY_AT_START);\n  const [notice, setNotice] = useState('');\n\n  function nodeOf(nodeId: string) {\n    return nodes[nodeId];\n  }\n\n  function sortedChildIdsOf(nodeId: string) {\n    const node = nodes[nodeId];\n    const childIds = [...node.childIds];\n    const order = byNameIn(nodes);\n    return childIds.sort(order);\n  }\n\n  function renameRow(row: ItemInstance<FlatNode>, typedName: string) {\n    const newName = typedName.trim();\n    const oldName = row.getItemName();\n    const isBlank = newName === '';\n    const isUnchanged = newName === oldName;\n    if (isBlank || isUnchanged) {\n      return;\n    }\n    const rowId = row.getId();\n    setNodes((current) => {\n      const renamed = { ...current[rowId], name: newName };\n      return { ...current, [rowId]: renamed };\n    });\n    setNotice(`Renamed ${oldName} to ${newName}`);\n  }\n\n  const tree = useTree<FlatNode>({\n    initialState: {\n      expandedItems: OPEN_AT_START,\n      selectedItems: [FOCUSED_AT_START],\n      focusedItem: FOCUSED_AT_START,\n    },\n    rootItemId: LIBRARY.id,\n    getItemName: nameOf,\n    isItemFolder: isFlatFolder,\n    onRename: renameRow,\n    dataLoader: { getItem: nodeOf, getChildren: sortedChildIdsOf },\n    features: [\n      syncDataLoaderFeature,\n      hotkeysCoreFeature,\n      selectionFeature,\n      renamingFeature,\n    ],\n  });\n\n  /* The tree lists its rows once and keeps the list: it reads the names again after every change, to sort them. */\n  useEffect(() => {\n    tree.rebuildTree();\n  }, [nodes, tree]);\n\n  function renameFocusedRow() {\n    tree.getFocusedItem().startRenaming();\n  }\n\n  return (\n    <div className='relative flex w-full flex-col gap-2'>\n      <div className='flex items-center justify-between gap-2'>\n        <h3 className='text-muted-foreground truncate text-xs font-medium'>\n          Research library\n        </h3>\n        <Button\n          type='button'\n          variant='ghost'\n          size='sm'\n          aria-keyshortcuts='F2'\n          onClick={renameFocusedRow}\n        >\n          <PencilIcon />\n          Rename\n          <Kbd>F2</Kbd>\n        </Button>\n      </div>\n      <Tree aria-label={LIBRARY.name} tree={tree}>\n        <TreeRows>\n          {tree.getItems().map((item) => (\n            <TreeRow\n              key={item.getId()}\n              item={item}\n              render={elementOf(item)}\n              travels\n            >\n              <TreeItemLabel className={LABEL_AS_TALL_AS_THE_FIELD}>\n                <EntryGlyph isFolder={item.isFolder()} />\n                <RowName row={item} />\n              </TreeItemLabel>\n            </TreeRow>\n          ))}\n        </TreeRows>\n      </Tree>\n      <LiveRegion message={notice} />\n    </div>\n  );\n}\n",
      "type": "registry:component",
      "target": "components/tree/tree-06.tsx"
    },
    {
      "path": "registry/ndeko/components/tree/_parts/tree-data.ts",
      "content": "import {\n  isOrderedDragTarget,\n  type DragTarget,\n  type ItemInstance,\n} from '@headless-tree/core';\n\nexport type Branch = {\n  id: string;\n  name: string;\n  children?: Branch[];\n};\n\ntype BranchIndex = Record<string, Branch>;\n\nexport type FlatNode = {\n  name: string;\n  isFolder: boolean;\n  childIds: string[];\n};\n\nexport type FlatNodes = Record<string, FlatNode>;\n\nfunction idOf(branch: Branch) {\n  return branch.id;\n}\n\nfunction childIdsOf(branch: Branch) {\n  const children = branch.children ?? [];\n  return children.map(idOf);\n}\n\nfunction collectBranches(branch: Branch, index: BranchIndex) {\n  index[branch.id] = branch;\n  const children = branch.children ?? [];\n  children.forEach((child) => collectBranches(child, index));\n}\n\nexport function indexBranches(root: Branch) {\n  const index: BranchIndex = {};\n  collectBranches(root, index);\n  return index;\n}\n\nexport function branchLoaderOf(index: BranchIndex) {\n  function getItem(branchId: string) {\n    return index[branchId];\n  }\n\n  function getChildren(branchId: string) {\n    const branch = index[branchId];\n    return childIdsOf(branch);\n  }\n\n  return { getItem, getChildren };\n}\n\nexport function nameOf<Data extends { name: string }>(\n  item: ItemInstance<Data>\n) {\n  return item.getItemData().name;\n}\n\nexport function hasChildren(item: ItemInstance<Branch>) {\n  const children = item.getItemData().children ?? [];\n  return children.length > 0;\n}\n\nexport function leafIdsOf(index: BranchIndex) {\n  const branches = Object.values(index);\n  const leaves = branches.filter((branch) => branch.children === undefined);\n  return leaves.map(idOf);\n}\n\nexport function folderIdsOf(index: BranchIndex) {\n  const branches = Object.values(index);\n  const folders = branches.filter((branch) => branch.children !== undefined);\n  return folders.map(idOf);\n}\n\n/* A tree may list a checked id twice, so the ids are counted from the side that has each of them once. */\nexport function countIn(ids: string[], pickedIds: string[]) {\n  const picked = ids.filter((id) => pickedIds.includes(id));\n  return picked.length;\n}\n\nexport function parentIdsOf(index: BranchIndex) {\n  const parentIds: Record<string, string> = {};\n  for (const branch of Object.values(index)) {\n    for (const childId of childIdsOf(branch)) {\n      parentIds[childId] = branch.id;\n    }\n  }\n  return parentIds;\n}\n\nfunction flatNodeOf(branch: Branch): FlatNode {\n  const isFolder = branch.children !== undefined;\n  const childIds = childIdsOf(branch);\n  return { name: branch.name, isFolder, childIds };\n}\n\nexport function flattenBranches(root: Branch) {\n  const index = indexBranches(root);\n  const nodes: FlatNodes = {};\n  for (const [branchId, branch] of Object.entries(index)) {\n    nodes[branchId] = flatNodeOf(branch);\n  }\n  return nodes;\n}\n\nexport function isFlatFolder(item: ItemInstance<FlatNode>) {\n  return item.getItemData().isFolder;\n}\n\nfunction withoutIds(ids: string[], removedIds: string[]) {\n  return ids.filter((id) => !removedIds.includes(id));\n}\n\nfunction insertedAt(ids: string[], index: number, addedIds: string[]) {\n  const before = ids.slice(0, index);\n  const after = ids.slice(index);\n  return [...before, ...addedIds, ...after];\n}\n\nfunction slotOf(target: DragTarget<FlatNode>, siblingCount: number) {\n  if (isOrderedDragTarget(target)) {\n    return target.insertionIndex;\n  }\n  return siblingCount;\n}\n\n/** One update for the whole drop, so no render ever shows the moved rows missing from the tree. */\nexport function moveNodes(\n  nodes: FlatNodes,\n  movedIds: string[],\n  target: DragTarget<FlatNode>\n) {\n  const moved: FlatNodes = {};\n  for (const [nodeId, node] of Object.entries(nodes)) {\n    const childIds = withoutIds(node.childIds, movedIds);\n    moved[nodeId] = { ...node, childIds };\n  }\n  const parentId = target.item.getId();\n  const parent = moved[parentId];\n  const slot = slotOf(target, parent.childIds.length);\n  const childIds = insertedAt(parent.childIds, slot, movedIds);\n  moved[parentId] = { ...parent, childIds };\n  return moved;\n}\n",
      "type": "registry:component",
      "target": "components/tree/_parts/tree-data.ts"
    },
    {
      "path": "registry/ndeko/components/tree/_parts/tree-glyphs.tsx",
      "content": "import {\n  FileIcon,\n  FolderIcon,\n  FolderOpenIcon,\n  type Icon,\n} from '@/registry/ndeko/lib/icons';\nimport { cn } from '@/registry/ndeko/lib/utils';\n\nconst LAYER =\n  'text-muted-foreground size-4 transition-[opacity,scale,filter] duration-150 ease-(--ease-out-strong) [grid-area:1/1]';\n\nconst GONE_WHEN_OPEN =\n  'in-aria-[expanded=true]:scale-60 in-aria-[expanded=true]:opacity-0 in-aria-[expanded=true]:blur-[2px]';\n\nconst GONE_WHEN_CLOSED =\n  'in-aria-[expanded=false]:scale-60 in-aria-[expanded=false]:opacity-0 in-aria-[expanded=false]:blur-[2px]';\n\ntype OpeningGlyphProps = {\n  closed: Icon;\n  open: Icon;\n};\n\n/* The swap reads aria-expanded on the row around it, so it needs no state and costs no script. */\nexport function OpeningGlyph({\n  closed: Closed,\n  open: Open,\n}: OpeningGlyphProps) {\n  return (\n    <span className='grid shrink-0'>\n      <Closed className={cn(LAYER, GONE_WHEN_OPEN)} />\n      <Open className={cn(LAYER, GONE_WHEN_CLOSED)} />\n    </span>\n  );\n}\n\nexport function FolderGlyph() {\n  return <OpeningGlyph closed={FolderIcon} open={FolderOpenIcon} />;\n}\n\ntype EntryGlyphProps = {\n  isFolder: boolean;\n  leaf?: Icon;\n};\n\nexport function EntryGlyph({\n  isFolder,\n  leaf: Leaf = FileIcon,\n}: EntryGlyphProps) {\n  if (isFolder) {\n    return <FolderGlyph />;\n  }\n  return <Leaf className='text-muted-foreground size-4' />;\n}\n",
      "type": "registry:component",
      "target": "components/tree/_parts/tree-glyphs.tsx"
    },
    {
      "path": "registry/ndeko/components/tree/_parts/tree-rows.tsx",
      "content": "'use client';\n\nimport type { useRender } from '@base-ui/react/use-render';\nimport type { ItemInstance } from '@headless-tree/core';\nimport { AnimatePresence, motion, useIsPresent } from 'motion/react';\nimport { createContext, useContext, useId, useState } from 'react';\n\nimport { usePrefersReducedMotion } from '@/registry/ndeko/hooks/use-prefers-reduced-motion';\nimport {\n  EASE_IN_OUT_STRONG,\n  rowPresenceOf,\n  springOf,\n} from '@/registry/ndeko/lib/motion-presets';\nimport { cn } from '@/registry/ndeko/lib/utils';\nimport { TreeItem } from '@/registry/ndeko/ui/tree';\n\n/*\n * The highlight is one element shared by every row of a tree. It glides to the row that mounts it\n * only when that row gives it another layout dependency than the row it left, hence the row id.\n */\nconst HighlightContext = createContext<string | undefined>(undefined);\n\nconst TRAVEL = { duration: 0.25, ease: EASE_IN_OUT_STRONG };\n\nconst NO_TRAVEL = { duration: 0 };\n\nconst FRAME = 'flex min-w-0 items-center gap-1.5';\n\nconst ITEM = 'relative min-w-0 flex-1 ps-(--row-indent) pb-0.5';\n\nconst HIGHLIGHT =\n  'bg-primary/[0.08] pointer-events-none absolute start-(--row-indent) end-0 top-0 bottom-0.5 -z-10 rounded-md';\n\n/* The highlight glides between rows, so the label stops drawing its own tint on a selected row. A search match keeps its colour. */\nconst LABEL_WITHOUT_TINT =\n  '[&[data-selected=true]:not([data-search-match=true])_[data-slot=tree-item-label]]:bg-transparent';\n\n/* One hairline per level of nesting, each under the icon of the folder it belongs to. */\nconst GUIDES = [\n  'bg-no-repeat [background-position:-0.25rem_0] [background-size:var(--row-indent)_100%]',\n  'bg-[repeating-linear-gradient(to_right,transparent_0_calc(var(--tree-indent)_-_var(--hairline)),var(--border)_calc(var(--tree-indent)_-_var(--hairline))_var(--tree-indent))]',\n].join(' ');\n\nfunction travelOf(shouldReduceMotion: boolean) {\n  if (shouldReduceMotion) {\n    return NO_TRAVEL;\n  }\n  return TRAVEL;\n}\n\nfunction layoutOf(travels: boolean) {\n  if (travels) {\n    return 'position' as const;\n  }\n  return false;\n}\n\n/* A tree set up without the selection feature keeps no list of selected rows. */\nfunction selectedIdsOf<T>(item: ItemInstance<T>) {\n  const { selectedItems } = item.getTree().getState();\n  return selectedItems ?? [];\n}\n\n/* A row that left the visible tree reports level -1 while it fades out: it keeps the indent it had. */\nfunction useShownLevel<T>(item: ItemInstance<T>) {\n  const { level } = item.getItemMeta();\n  const [shownLevel, setShownLevel] = useState(level);\n  const isInTree = level >= 0;\n  const hasMoved = level !== shownLevel;\n  if (isInTree && hasMoved) {\n    setShownLevel(level);\n    return level;\n  }\n  return shownLevel;\n}\n\ntype TreeRowsProps = {\n  children: React.ReactNode;\n};\n\n/* Rows that are there when the tree mounts do not animate: only the ones a folder opens or closes later do. */\nexport function TreeRows({ children }: TreeRowsProps) {\n  const highlightId = useId();\n\n  return (\n    <HighlightContext.Provider value={highlightId}>\n      <AnimatePresence initial={false}>{children}</AnimatePresence>\n    </HighlightContext.Provider>\n  );\n}\n\ntype TreeRowProps<T> = {\n  item: ItemInstance<T>;\n  children: React.ReactNode;\n  leading?: React.ReactNode;\n  trailing?: React.ReactNode;\n  render?: useRender.ComponentProps<'button'>['render'];\n  hasGuides?: boolean;\n  travels?: boolean;\n  className?: string;\n};\n\nexport function TreeRow<T>({\n  item,\n  children,\n  leading,\n  trailing,\n  render,\n  hasGuides = false,\n  travels = false,\n  className,\n}: TreeRowProps<T>) {\n  const highlightId = useContext(HighlightContext);\n  const shouldReduceMotion = usePrefersReducedMotion();\n  const isPresent = useIsPresent();\n  const [isResizing, setIsResizing] = useState(false);\n  const level = useShownLevel(item);\n  const presence = rowPresenceOf(shouldReduceMotion);\n  const travel = travelOf(shouldReduceMotion);\n  const transition = { ...presence.transition, layout: travel };\n  const glide = springOf(shouldReduceMotion);\n  const layout = layoutOf(travels);\n  const itemId = item.getId();\n  const position = item.getItemMeta().index;\n  const selectedIds = selectedIdsOf(item);\n  const isSelected = selectedIds.includes(itemId);\n  const isOnlySelected = isSelected && selectedIds.length === 1;\n  /* A row on its way out keeps a plain tint, so its removal never waits for the highlight to land elsewhere. */\n  const hasGlidingTint = isOnlySelected && isPresent;\n  const hasStillTint = isSelected && !hasGlidingTint;\n  const isClipped = isResizing || !isPresent;\n  const frameStyle = {\n    '--row-indent': `calc(var(--tree-indent) * ${level})`,\n  } as React.CSSProperties;\n\n  function startResizing() {\n    setIsResizing(true);\n  }\n\n  function stopResizing() {\n    setIsResizing(false);\n  }\n\n  return (\n    <motion.div\n      data-slot='tree-row'\n      style={frameStyle}\n      className={cn(FRAME, isClipped && 'overflow-hidden')}\n      layout={layout}\n      layoutDependency={position}\n      onAnimationStart={startResizing}\n      onAnimationComplete={stopResizing}\n      {...presence}\n      transition={transition}\n    >\n      {leading}\n      <TreeItem\n        item={item}\n        render={render}\n        className={cn(ITEM, LABEL_WITHOUT_TINT, hasGuides && GUIDES, className)}\n      >\n        {hasGlidingTint && (\n          <motion.span\n            layoutId={highlightId}\n            layoutDependency={itemId}\n            transition={glide}\n            aria-hidden='true'\n            className={HIGHLIGHT}\n          />\n        )}\n        {hasStillTint && <span aria-hidden='true' className={HIGHLIGHT} />}\n        {children}\n      </TreeItem>\n      {trailing}\n    </motion.div>\n  );\n}\n",
      "type": "registry:component",
      "target": "components/tree/_parts/tree-rows.tsx"
    }
  ],
  "categories": [
    "components",
    "tree"
  ],
  "type": "registry:component"
}