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minstrel/web/src/lib/components/TabStrip.svelte
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bvandeusenandClaude Opus 5.5 0f9ddbca97
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feat(web): every paged list loads as you scroll; Liked becomes tabs (#5416)
Preference 172: no "Load more" buttons. Eight remained, on Liked (three
sections), the three Search overflow pages, Genres and Years.

- ListContinuation: the one bottom-of-list block. It loads the next page
  ahead of the reader, announces "Loading more…" through aria-live, shows an
  optional end line, and on a failed page shows the error with Try again,
  dropping the sentinel so a dead endpoint isn't re-hit on every scroll.
  Used on all ten paged lists, including the four that already autoloaded.
- A failed next page no longer replaces the list. TanStack sets isError for
  it, so the page-level error branches now apply only to a failed first
  load. Genres and Years did the same with their own loader; a later
  page's failure now keeps the grid.
- Liked: Artists | Albums | Tracks tabs (operator's choice). Stacked, a
  long Artists list loading as you scroll would bury the other two. It
  opens on the first tab that has likes.
- TabStrip: the in-page tab strip, now shared by Liked, Playback errors
  and Requests.
- test-utils/intersectionObserver: a stand-in so tests can scroll to the end.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-08 16:55:33 -04:00

48 lines
1.4 KiB
Svelte

<script lang="ts" generics="Id extends string">
// In-page tabs: one strip of buttons switching what a single page shows
// (#5416). The same look as AdminTabs and DiscoverTabs, which are route
// navigation and so stay links; this is for state inside one page, such as
// Liked's Artists | Albums | Tracks or a queue's status filter.
type Item = {
id: Id;
label: string;
/** Shown as a pill after the label. Omit for no pill. */
count?: number;
};
let {
items,
value = $bindable(),
ariaLabel
}: {
items: Item[];
value: Id;
ariaLabel: string;
} = $props();
</script>
<div role="tablist" aria-label={ariaLabel} class="flex gap-2 border-b border-border">
{#each items as item (item.id)}
{@const active = value === item.id}
<button
type="button"
role="tab"
aria-selected={active}
class="border-b-2 px-3 py-2 text-sm transition-colors {active
? 'border-accent text-text-primary'
: 'border-transparent text-text-secondary hover:text-text-primary'}"
onclick={() => (value = item.id)}
>
{item.label}
{#if item.count !== undefined}
<span
class="ml-1.5 inline-flex items-center rounded-full bg-accent-tint px-2 py-0.5 text-xs text-accent-fg"
data-testid="tab-count"
>
{item.count}
</span>
{/if}
</button>
{/each}
</div>