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<script lang="ts">
import { ChevronLeft, ChevronRight } from '@lucide/svelte';
import { Button } from '$lib/components/ui/button';
import * as Tooltip from '$lib/components/ui/tooltip';
interface Props {
class?: string;
siblingInfo: ChatMessageSiblingInfo | null;
onNavigateToSibling?: (siblingId: string) => void;
}
let { class: className = '', siblingInfo, onNavigateToSibling }: Props = $props();
let hasPrevious = $derived(siblingInfo && siblingInfo.currentIndex > 0);
let hasNext = $derived(siblingInfo && siblingInfo.currentIndex < siblingInfo.totalSiblings - 1);
let nextSiblingId = $derived(
hasNext ? siblingInfo!.siblingIds[siblingInfo!.currentIndex + 1] : null
);
let previousSiblingId = $derived(
hasPrevious ? siblingInfo!.siblingIds[siblingInfo!.currentIndex - 1] : null
);
function handleNext() {
if (nextSiblingId) {
onNavigateToSibling?.(nextSiblingId);
}
}
function handlePrevious() {
if (previousSiblingId) {
onNavigateToSibling?.(previousSiblingId);
}
}
</script>
{#if siblingInfo && siblingInfo.totalSiblings > 1}
<div
aria-label="Message version {siblingInfo.currentIndex + 1} of {siblingInfo.totalSiblings}"
class="flex items-center gap-1 text-xs text-muted-foreground {className}"
role="navigation"
>
<Tooltip.Root>
<Tooltip.Trigger>
<Button
aria-label="Previous message version"
class="h-5 w-5 p-0 {!hasPrevious ? 'cursor-not-allowed opacity-30' : ''}"
disabled={!hasPrevious}
onclick={handlePrevious}
size="sm"
variant="ghost"
>
<ChevronLeft class="h-3 w-3" />
</Button>
</Tooltip.Trigger>
<Tooltip.Content>
<p>Previous version</p>
</Tooltip.Content>
</Tooltip.Root>
<span class="px-1 font-mono text-xs">
{siblingInfo.currentIndex + 1}/{siblingInfo.totalSiblings}
</span>
<Tooltip.Root>
<Tooltip.Trigger>
<Button
aria-label="Next message version"
class="h-5 w-5 p-0 {!hasNext ? 'cursor-not-allowed opacity-30' : ''}"
disabled={!hasNext}
onclick={handleNext}
size="sm"
variant="ghost"
>
<ChevronRight class="h-3 w-3" />
</Button>
</Tooltip.Trigger>
<Tooltip.Content>
<p>Next version</p>
</Tooltip.Content>
</Tooltip.Root>
</div>
{/if}
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