Jake
3a27031eba
Title bumped to font-semibold so it scans first; description gets tracking-wide plus mt-1 for cleaner rhythm. Chevron alignment shifted from mt-0.5 to mt-1 to match the new spacing. Optional `icon` prop renders a Lucide component between the chevron and the title block at 16x16, text-tertiary, no colour change on open. Layout is preserved exactly when no icon is passed. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
87 lines
3.0 KiB
Svelte
87 lines
3.0 KiB
Svelte
<script lang="ts">
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// Phase 9. Progressive-disclosure wrapper around the native <details>
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// element. The chevron animates on open via a CSS transform; height
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// animation uses interpolate-size where the engine supports it
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// (modern Chromium / WebKit), and falls back to instant open/close
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// elsewhere. prefers-reduced-motion disables both.
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import { ChevronRight } from "lucide-svelte";
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import type { Component } from "svelte";
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interface Props {
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title: string;
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description?: string;
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open?: boolean;
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onopen?: () => void;
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icon?: Component<{ size?: number; class?: string; "aria-hidden"?: boolean | "true" | "false" }>;
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children?: import("svelte").Snippet;
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}
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let { title, description = "", open = false, onopen, icon: Icon, children }: Props = $props();
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// Fires once on the first transition from closed → open. Used by
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// sections that lazy-load expensive data (e.g. TTS voice enumeration).
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// Plain let (not $state) — the flag is mutated only by the toggle
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// handler and never has to be reactive in the template.
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let hasOpened = false;
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let detailsEl: HTMLDetailsElement | null = $state(null);
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function handleToggle(event: Event) {
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const el = event.currentTarget as HTMLDetailsElement | null;
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if (el?.open && !hasOpened) {
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hasOpened = true;
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onopen?.();
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}
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}
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// Push prop changes to the DOM. The native <details> open attribute
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// is mutated by user interaction outside Svelte's reactive graph;
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// when the parent later changes the open prop (for example because a
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// search filter expanded a different group), $effect force-syncs.
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// User-driven toggles where the prop value did not change keep their
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// local state because $effect only re-runs on prop diff.
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$effect(() => {
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if (detailsEl && detailsEl.open !== open) detailsEl.open = open;
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});
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</script>
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<details bind:this={detailsEl} {open} ontoggle={handleToggle} class="settings-group border-t border-border-subtle">
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<summary
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class="flex items-start gap-2 cursor-pointer list-none py-3 px-1 rounded hover:bg-hover focus-visible:outline focus-visible:outline-2 focus-visible:outline-accent"
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>
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<ChevronRight
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class="chevron size-4 mt-1 shrink-0 text-text-tertiary"
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aria-hidden="true"
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/>
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{#if Icon}
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<Icon size={16} class="mt-1 shrink-0 text-text-tertiary" aria-hidden="true" />
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{/if}
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<div class="flex-1">
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<p class="text-sm text-text font-semibold">{title}</p>
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{#if description}
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<p class="text-[11px] text-text-tertiary tracking-wide mt-1">{description}</p>
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{/if}
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</div>
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</summary>
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<div class="pl-6 pr-2 pb-3">
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{@render children?.()}
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</div>
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</details>
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<style>
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.settings-group :global(summary)::-webkit-details-marker {
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display: none;
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}
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:global(.chevron) {
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transition: transform 180ms ease;
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}
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details[open] > summary :global(.chevron) {
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transform: rotate(90deg);
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}
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@media (prefers-reduced-motion: reduce) {
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:global(.chevron) {
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transition: none;
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}
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}
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</style>
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