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<script lang="ts">
import type { Snippet } from "svelte";
/**
* A daisyUI checkbox collapse whose BODY is rendered lazily: nothing inside
* `.collapse-content` is created until the user first opens it. A long turn
* has hundreds of collapsed tool/thinking cards, each holding a full JSON
* input / tool output / thought — building all of that DOM up front (only to
* be hidden) dominated first paint on slow devices. Once opened the body
* stays mounted, so the close animation and any inner scroll state work as
* before. Same markup + classes as the inline collapses it replaces.
*/
let {
label,
titleClass = "",
title,
children,
}: {
/** aria-label of the toggle checkbox. */
label: string;
/** Extra classes on the `.collapse-title` row. */
titleClass?: string;
title: Snippet;
children: Snippet;
} = $props();
let open = $state(false);
let everOpened = $state(false);
$effect(() => {
if (open) everOpened = true;
});
</script>
<!-- `.inset-well` (app.css): the recessed panel shared by thinking/tool blocks
and the sidebar views. -->
<div class="collapse inset-well w-full text-sm">
<input type="checkbox" aria-label={label} bind:checked={open} />
<div class="collapse-title flex min-h-0 min-w-0 items-center gap-2 py-2 whitespace-nowrap font-medium {titleClass}">
{@render title()}
</div>
<div class="collapse-content">
{#if open || everOpened}
{@render children()}
{/if}
</div>
</div>
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