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| 1 | +import * as React from "react" |
| 2 | +import useEmblaCarousel, { |
| 3 | + type UseEmblaCarouselType, |
| 4 | +} from "embla-carousel-react" |
| 5 | +import { ArrowLeft, ArrowRight } from "lucide-react" |
| 6 | + |
| 7 | +import { cn } from "@/lib/utils" |
| 8 | +import { Button } from "@/components/ui/button" |
| 9 | + |
| 10 | +type CarouselApi = UseEmblaCarouselType[1] |
| 11 | +type UseCarouselParameters = Parameters<typeof useEmblaCarousel> |
| 12 | +type CarouselOptions = UseCarouselParameters[0] |
| 13 | +type CarouselPlugin = UseCarouselParameters[1] |
| 14 | + |
| 15 | +type CarouselProps = { |
| 16 | + opts?: CarouselOptions |
| 17 | + plugins?: CarouselPlugin |
| 18 | + orientation?: "horizontal" | "vertical" |
| 19 | + setApi?: (api: CarouselApi) => void |
| 20 | +} |
| 21 | + |
| 22 | +type CarouselContextProps = { |
| 23 | + carouselRef: ReturnType<typeof useEmblaCarousel>[0] |
| 24 | + api: ReturnType<typeof useEmblaCarousel>[1] |
| 25 | + scrollPrev: () => void |
| 26 | + scrollNext: () => void |
| 27 | + canScrollPrev: boolean |
| 28 | + canScrollNext: boolean |
| 29 | +} & CarouselProps |
| 30 | + |
| 31 | +const CarouselContext = React.createContext<CarouselContextProps | null>(null) |
| 32 | + |
| 33 | +function useCarousel() { |
| 34 | + const context = React.useContext(CarouselContext) |
| 35 | + |
| 36 | + if (!context) { |
| 37 | + throw new Error("useCarousel must be used within a <Carousel />") |
| 38 | + } |
| 39 | + |
| 40 | + return context |
| 41 | +} |
| 42 | + |
| 43 | +function Carousel({ |
| 44 | + orientation = "horizontal", |
| 45 | + opts, |
| 46 | + setApi, |
| 47 | + plugins, |
| 48 | + className, |
| 49 | + children, |
| 50 | + ...props |
| 51 | +}: React.ComponentProps<"div"> & CarouselProps) { |
| 52 | + const [carouselRef, api] = useEmblaCarousel( |
| 53 | + { |
| 54 | + ...opts, |
| 55 | + axis: orientation === "horizontal" ? "x" : "y", |
| 56 | + }, |
| 57 | + plugins |
| 58 | + ) |
| 59 | + const [canScrollPrev, setCanScrollPrev] = React.useState(false) |
| 60 | + const [canScrollNext, setCanScrollNext] = React.useState(false) |
| 61 | + |
| 62 | + const onSelect = React.useCallback((api: CarouselApi) => { |
| 63 | + if (!api) return |
| 64 | + setCanScrollPrev(api.canScrollPrev()) |
| 65 | + setCanScrollNext(api.canScrollNext()) |
| 66 | + }, []) |
| 67 | + |
| 68 | + const scrollPrev = React.useCallback(() => { |
| 69 | + api?.scrollPrev() |
| 70 | + }, [api]) |
| 71 | + |
| 72 | + const scrollNext = React.useCallback(() => { |
| 73 | + api?.scrollNext() |
| 74 | + }, [api]) |
| 75 | + |
| 76 | + const handleKeyDown = React.useCallback( |
| 77 | + (event: React.KeyboardEvent<HTMLDivElement>) => { |
| 78 | + if (event.key === "ArrowLeft") { |
| 79 | + event.preventDefault() |
| 80 | + scrollPrev() |
| 81 | + } else if (event.key === "ArrowRight") { |
| 82 | + event.preventDefault() |
| 83 | + scrollNext() |
| 84 | + } |
| 85 | + }, |
| 86 | + [scrollPrev, scrollNext] |
| 87 | + ) |
| 88 | + |
| 89 | + React.useEffect(() => { |
| 90 | + if (!api || !setApi) return |
| 91 | + setApi(api) |
| 92 | + }, [api, setApi]) |
| 93 | + |
| 94 | + React.useEffect(() => { |
| 95 | + if (!api) return |
| 96 | + onSelect(api) |
| 97 | + api.on("reInit", onSelect) |
| 98 | + api.on("select", onSelect) |
| 99 | + |
| 100 | + return () => { |
| 101 | + api?.off("select", onSelect) |
| 102 | + } |
| 103 | + }, [api, onSelect]) |
| 104 | + |
| 105 | + return ( |
| 106 | + <CarouselContext.Provider |
| 107 | + value={{ |
| 108 | + carouselRef, |
| 109 | + api: api, |
| 110 | + opts, |
| 111 | + orientation: |
| 112 | + orientation || (opts?.axis === "y" ? "vertical" : "horizontal"), |
| 113 | + scrollPrev, |
| 114 | + scrollNext, |
| 115 | + canScrollPrev, |
| 116 | + canScrollNext, |
| 117 | + }} |
| 118 | + > |
| 119 | + <div |
| 120 | + onKeyDownCapture={handleKeyDown} |
| 121 | + className={cn("relative", className)} |
| 122 | + role="region" |
| 123 | + aria-roledescription="carousel" |
| 124 | + data-slot="carousel" |
| 125 | + {...props} |
| 126 | + > |
| 127 | + {children} |
| 128 | + </div> |
| 129 | + </CarouselContext.Provider> |
| 130 | + ) |
| 131 | +} |
| 132 | + |
| 133 | +function CarouselContent({ className, ...props }: React.ComponentProps<"div">) { |
| 134 | + const { carouselRef, orientation } = useCarousel() |
| 135 | + |
| 136 | + return ( |
| 137 | + <div |
| 138 | + ref={carouselRef} |
| 139 | + className="overflow-hidden" |
| 140 | + data-slot="carousel-content" |
| 141 | + > |
| 142 | + <div |
| 143 | + className={cn( |
| 144 | + "flex", |
| 145 | + orientation === "horizontal" ? "-ml-4" : "-mt-4 flex-col", |
| 146 | + className |
| 147 | + )} |
| 148 | + {...props} |
| 149 | + /> |
| 150 | + </div> |
| 151 | + ) |
| 152 | +} |
| 153 | + |
| 154 | +function CarouselItem({ className, ...props }: React.ComponentProps<"div">) { |
| 155 | + const { orientation } = useCarousel() |
| 156 | + |
| 157 | + return ( |
| 158 | + <div |
| 159 | + role="group" |
| 160 | + aria-roledescription="slide" |
| 161 | + data-slot="carousel-item" |
| 162 | + className={cn( |
| 163 | + "min-w-0 shrink-0 grow-0 basis-full", |
| 164 | + orientation === "horizontal" ? "pl-4" : "pt-4", |
| 165 | + className |
| 166 | + )} |
| 167 | + {...props} |
| 168 | + /> |
| 169 | + ) |
| 170 | +} |
| 171 | + |
| 172 | +function CarouselPrevious({ |
| 173 | + className, |
| 174 | + variant = "outline", |
| 175 | + size = "icon", |
| 176 | + ...props |
| 177 | +}: React.ComponentProps<typeof Button>) { |
| 178 | + const { orientation, scrollPrev, canScrollPrev } = useCarousel() |
| 179 | + |
| 180 | + return ( |
| 181 | + <Button |
| 182 | + data-slot="carousel-previous" |
| 183 | + variant={variant} |
| 184 | + size={size} |
| 185 | + className={cn( |
| 186 | + "absolute size-8 rounded-full", |
| 187 | + orientation === "horizontal" |
| 188 | + ? "top-1/2 -left-12 -translate-y-1/2" |
| 189 | + : "-top-12 left-1/2 -translate-x-1/2 rotate-90", |
| 190 | + className |
| 191 | + )} |
| 192 | + disabled={!canScrollPrev} |
| 193 | + onClick={scrollPrev} |
| 194 | + {...props} |
| 195 | + > |
| 196 | + <ArrowLeft /> |
| 197 | + <span className="sr-only">Previous slide</span> |
| 198 | + </Button> |
| 199 | + ) |
| 200 | +} |
| 201 | + |
| 202 | +function CarouselNext({ |
| 203 | + className, |
| 204 | + variant = "outline", |
| 205 | + size = "icon", |
| 206 | + ...props |
| 207 | +}: React.ComponentProps<typeof Button>) { |
| 208 | + const { orientation, scrollNext, canScrollNext } = useCarousel() |
| 209 | + |
| 210 | + return ( |
| 211 | + <Button |
| 212 | + data-slot="carousel-next" |
| 213 | + variant={variant} |
| 214 | + size={size} |
| 215 | + className={cn( |
| 216 | + "absolute size-8 rounded-full", |
| 217 | + orientation === "horizontal" |
| 218 | + ? "top-1/2 -right-12 -translate-y-1/2" |
| 219 | + : "-bottom-12 left-1/2 -translate-x-1/2 rotate-90", |
| 220 | + className |
| 221 | + )} |
| 222 | + disabled={!canScrollNext} |
| 223 | + onClick={scrollNext} |
| 224 | + {...props} |
| 225 | + > |
| 226 | + <ArrowRight /> |
| 227 | + <span className="sr-only">Next slide</span> |
| 228 | + </Button> |
| 229 | + ) |
| 230 | +} |
| 231 | + |
| 232 | +export { |
| 233 | + type CarouselApi, |
| 234 | + Carousel, |
| 235 | + CarouselContent, |
| 236 | + CarouselItem, |
| 237 | + CarouselPrevious, |
| 238 | + CarouselNext, |
| 239 | +} |
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