wip

src/lib/components/ui/carousel/carousel.svelte

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+<script lang="ts">
+	import {
+		type CarouselAPI,
+		type CarouselProps,
+		type EmblaContext,
+		setEmblaContext,
+	} from "./context.js";
+	import { cn, type WithElementRef } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		opts = {},
+		plugins = [],
+		setApi = () => {},
+		orientation = "horizontal",
+		class: className,
+		children,
+		...restProps
+	}: WithElementRef<CarouselProps> = $props();
+
+	let carouselState = $state<EmblaContext>({
+		api: undefined,
+		scrollPrev,
+		scrollNext,
+		orientation,
+		canScrollNext: false,
+		canScrollPrev: false,
+		handleKeyDown,
+		options: opts,
+		plugins,
+		onInit,
+		scrollSnaps: [],
+		selectedIndex: 0,
+		scrollTo,
+	});
+
+	setEmblaContext(carouselState);
+
+	function scrollPrev() {
+		carouselState.api?.scrollPrev();
+	}
+
+	function scrollNext() {
+		carouselState.api?.scrollNext();
+	}
+
+	function scrollTo(index: number, jump?: boolean) {
+		carouselState.api?.scrollTo(index, jump);
+	}
+
+	function onSelect() {
+		if (!carouselState.api) return;
+		carouselState.selectedIndex = carouselState.api.selectedScrollSnap();
+		carouselState.canScrollNext = carouselState.api.canScrollNext();
+		carouselState.canScrollPrev = carouselState.api.canScrollPrev();
+	}
+
+	function handleKeyDown(e: KeyboardEvent) {
+		if (e.key === "ArrowLeft") {
+			e.preventDefault();
+			scrollPrev();
+		} else if (e.key === "ArrowRight") {
+			e.preventDefault();
+			scrollNext();
+		}
+	}
+
+	function onInit(event: CustomEvent<CarouselAPI>) {
+		carouselState.api = event.detail;
+		setApi(carouselState.api);
+
+		carouselState.scrollSnaps = carouselState.api.scrollSnapList();
+		carouselState.api.on("select", onSelect);
+		onSelect();
+	}
+
+	$effect(() => {
+		return () => {
+			carouselState.api?.off("select", onSelect);
+		};
+	});
+</script>
+
+<div
+	bind:this={ref}
+	data-slot="carousel"
+	class={cn("relative", className)}
+	role="region"
+	aria-roledescription="carousel"
+	{...restProps}
+>
+	{@render children?.()}
+</div>