carousel.tsx•6.25 kB
import * as React from "react";
import useEmblaCarousel, { type UseEmblaCarouselType } from "embla-carousel-react";
import { ArrowLeft, ArrowRight } from "lucide-react";
import { cn } from "@/lib/utils";
import { Button } from "@/components/ui/button";
type CarouselApi = UseEmblaCarouselType[1];
type UseCarouselParameters = Parameters<typeof useEmblaCarousel>;
type CarouselOptions = UseCarouselParameters[0];
type CarouselPlugin = UseCarouselParameters[1];
type CarouselProps = {
opts?: CarouselOptions;
plugins?: CarouselPlugin;
orientation?: "horizontal" | "vertical";
setApi?: (api: CarouselApi) => void;
};
type CarouselContextProps = {
carouselRef: ReturnType<typeof useEmblaCarousel>[0];
api: ReturnType<typeof useEmblaCarousel>[1];
scrollPrev: () => void;
scrollNext: () => void;
canScrollPrev: boolean;
canScrollNext: boolean;
} & CarouselProps;
const CarouselContext = React.createContext<CarouselContextProps | null>(null);
function useCarousel() {
const context = React.useContext(CarouselContext);
if (!context) {
throw new Error("useCarousel must be used within a <Carousel />");
}
return context;
}
const Carousel = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement> & CarouselProps>(
({ orientation = "horizontal", opts, setApi, plugins, className, children, ...props }, ref) => {
const [carouselRef, api] = useEmblaCarousel(
{
...opts,
axis: orientation === "horizontal" ? "x" : "y",
},
plugins,
);
const [canScrollPrev, setCanScrollPrev] = React.useState(false);
const [canScrollNext, setCanScrollNext] = React.useState(false);
const onSelect = React.useCallback((api: CarouselApi) => {
if (!api) {
return;
}
setCanScrollPrev(api.canScrollPrev());
setCanScrollNext(api.canScrollNext());
}, []);
const scrollPrev = React.useCallback(() => {
api?.scrollPrev();
}, [api]);
const scrollNext = React.useCallback(() => {
api?.scrollNext();
}, [api]);
const handleKeyDown = React.useCallback(
(event: React.KeyboardEvent<HTMLDivElement>) => {
if (event.key === "ArrowLeft") {
event.preventDefault();
scrollPrev();
} else if (event.key === "ArrowRight") {
event.preventDefault();
scrollNext();
}
},
[scrollPrev, scrollNext],
);
React.useEffect(() => {
if (!api || !setApi) {
return;
}
setApi(api);
}, [api, setApi]);
React.useEffect(() => {
if (!api) {
return;
}
onSelect(api);
api.on("reInit", onSelect);
api.on("select", onSelect);
return () => {
api?.off("select", onSelect);
};
}, [api, onSelect]);
return (
<CarouselContext.Provider
value={{
carouselRef,
api: api,
opts,
orientation: orientation || (opts?.axis === "y" ? "vertical" : "horizontal"),
scrollPrev,
scrollNext,
canScrollPrev,
canScrollNext,
}}
>
<div
ref={ref}
onKeyDownCapture={handleKeyDown}
className={cn("relative", className)}
role="region"
aria-roledescription="carousel"
{...props}
>
{children}
</div>
</CarouselContext.Provider>
);
},
);
Carousel.displayName = "Carousel";
const CarouselContent = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
({ className, ...props }, ref) => {
const { carouselRef, orientation } = useCarousel();
return (
<div ref={carouselRef} className="overflow-hidden">
<div
ref={ref}
className={cn("flex", orientation === "horizontal" ? "-ml-4" : "-mt-4 flex-col", className)}
{...props}
/>
</div>
);
},
);
CarouselContent.displayName = "CarouselContent";
const CarouselItem = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(
({ className, ...props }, ref) => {
const { orientation } = useCarousel();
return (
<div
ref={ref}
role="group"
aria-roledescription="slide"
className={cn("min-w-0 shrink-0 grow-0 basis-full", orientation === "horizontal" ? "pl-4" : "pt-4", className)}
{...props}
/>
);
},
);
CarouselItem.displayName = "CarouselItem";
const CarouselPrevious = React.forwardRef<HTMLButtonElement, React.ComponentProps<typeof Button>>(
({ className, variant = "outline", size = "icon", ...props }, ref) => {
const { orientation, scrollPrev, canScrollPrev } = useCarousel();
return (
<Button
ref={ref}
variant={variant}
size={size}
className={cn(
"absolute h-8 w-8 rounded-full",
orientation === "horizontal"
? "-left-12 top-1/2 -translate-y-1/2"
: "-top-12 left-1/2 -translate-x-1/2 rotate-90",
className,
)}
disabled={!canScrollPrev}
onClick={scrollPrev}
{...props}
>
<ArrowLeft className="h-4 w-4" />
<span className="sr-only">Previous slide</span>
</Button>
);
},
);
CarouselPrevious.displayName = "CarouselPrevious";
const CarouselNext = React.forwardRef<HTMLButtonElement, React.ComponentProps<typeof Button>>(
({ className, variant = "outline", size = "icon", ...props }, ref) => {
const { orientation, scrollNext, canScrollNext } = useCarousel();
return (
<Button
ref={ref}
variant={variant}
size={size}
className={cn(
"absolute h-8 w-8 rounded-full",
orientation === "horizontal"
? "-right-12 top-1/2 -translate-y-1/2"
: "-bottom-12 left-1/2 -translate-x-1/2 rotate-90",
className,
)}
disabled={!canScrollNext}
onClick={scrollNext}
{...props}
>
<ArrowRight className="h-4 w-4" />
<span className="sr-only">Next slide</span>
</Button>
);
},
);
CarouselNext.displayName = "CarouselNext";
export { type CarouselApi, Carousel, CarouselContent, CarouselItem, CarouselPrevious, CarouselNext };