Icon Bar

1'use client'
2 
3import {
4  createContext,
5  forwardRef,
6  useCallback,
7  useContext,
8  useEffect,
9  useMemo,
10  useRef,
11  useState,
12  type HTMLAttributes,
13  type ReactNode,
14} from 'react'
15import { useReducedMotion } from 'motion/react'
16import { cn } from '@/lib/utils'
17import { durations } from '@/lib/motion-tokens'
18import { WeightShiftText } from '@/components/ui/weight-shift-text'
19 
20interface IconBarContextValue {
21  value: string | null
22  setValue: (v: string | null) => void
23 
24  rovingIndex: number
25  setRovingIndex: (i: number) => void
26}
27 
28const IconBarContext = createContext<IconBarContextValue | null>(null)
29 
30function useIconBarCtx(componentName: string) {
31  const ctx = useContext(IconBarContext)
32  if (!ctx) throw new Error(`${componentName} must be used within IconBar`)
33  return ctx
34}
35 
36export interface IconBarProps extends Omit<HTMLAttributes<HTMLDivElement>, 'defaultValue'> {
37  children: ReactNode
38  value?: string | null
39  defaultValue?: string | null
40  onValueChange?: (v: string | null) => void
41  'aria-label'?: string
42}
43 
44export const IconBar = forwardRef<HTMLDivElement, IconBarProps>(
45  (
46    {
47      children,
48      value: valueProp,
49      defaultValue = null,
50      onValueChange,
51      'aria-label': ariaLabel = 'Toolbar',
52      className,
53      ...props
54    },
55    ref,
56  ) => {
57    const isControlled = valueProp !== undefined
58    const [internalValue, setInternalValue] = useState(defaultValue)
59    const value = isControlled ? valueProp : internalValue
60 
61    const setValue = useCallback(
62      (v: string | null) => {
63        if (!isControlled) setInternalValue(v)
64        onValueChange?.(v)
65      },
66      [isControlled, onValueChange],
67    )
68 
69    const [rovingIndex, setRovingIndex] = useState(0)
70    const barRef = useRef<HTMLDivElement>(null)
71 
72    const handleKeyDown = useCallback((e: React.KeyboardEvent<HTMLDivElement>) => {
73      const bar = barRef.current
74      if (!bar) return
75      const buttons = Array.from(
76        bar.querySelectorAll<HTMLElement>('[role="toolbar"] > button:not([disabled])'),
77      )
78      if (!buttons.length) return
79 
80      const isRTL = bar.ownerDocument.defaultView?.getComputedStyle(bar).direction === 'rtl'
81      const count = buttons.length
82      const currentIdx = buttons.indexOf(document.activeElement as HTMLElement)
83 
84      let nextIdx = currentIdx
85 
86      if (e.key === 'ArrowRight') {
87        e.preventDefault()
88        nextIdx = isRTL ? (currentIdx <= 0 ? count - 1 : currentIdx - 1) : (currentIdx + 1) % count
89// … truncated