svelte-kit-vice/web/routes/uix/components/listbox/+page.svelte

<script lang="ts">
	import {
		Listbox,
		type ListboxSize,
		type ListboxVariant,
		type ListboxColor,
		type ListboxSelectionMode
	} from '$uix/eidos/components/listbox';
	import { compileMorfo } from '$uix/morfo';
	import { listboxMorfo } from '@/uix/morfo/components/listbox';
	import { getActiveUix } from '$active-uix';
	import TokensPanel from '../../lib/TokensPanel.svelte';

	const uix = getActiveUix();

	type Tab = 'live' | 'api' | 'morfo' | 'sema' | 'recipe' | 'tokens' | 'a11y';
	let tab = $state<Tab>('live');

	// ── Live state ────────────────────────────────────────────────────────
	let value = $state<string[]>(['banana']);
	let selectionMode = $state<ListboxSelectionMode>('single');
	let size = $state<ListboxSize>('md');
	let variant = $state<ListboxVariant>('surface');
	let color = $state<ListboxColor>('primary');
	let orientation = $state<'vertical' | 'horizontal'>('vertical');
	let loop = $state(true);
	let typeahead = $state(true);
	let disabled = $state(false);
	let invalid = $state(false);
	let block = $state(false);

	type TraceEntry = { event: string; family: string; intent?: string; at: number };
	let trace = $state<TraceEntry[]>([]);
	let stageRef = $state<HTMLElement | null>(null);

	$effect(() => {
		const el = stageRef;
		if (!el) return;
		const obs = new MutationObserver((mutations) => {
			for (const m of mutations) {
				if (m.attributeName !== 'data-event') continue;
				const target = m.target as Element;
				const ev = target.getAttribute('data-event');
				if (!ev) continue;
				trace = [
					{
						event: ev,
						family: target.getAttribute('data-event-family') ?? '—',
						intent: target.getAttribute('data-event-intent') ?? undefined,
						at: Date.now()
					},
					...trace
				].slice(0, 6);
			}
		});
		obs.observe(el, { attributes: true, subtree: true, attributeFilter: ['data-event'] });
		return () => obs.disconnect();
	});

	const compiled = compileMorfo(listboxMorfo);
	const partsList = $derived([...compiled.parts.byKebab.values()]);
	const events = $derived([...compiled.actions.byName.values()]);

	function fmtTime(at: number): string {
		const d = new Date(at);
		return `${String(d.getSeconds()).padStart(2, '0')}.${String(d.getMilliseconds()).padStart(3, '0')}`;
	}

	const somaSnippet = $derived(
		[
			"<script lang='ts'>",
			"  import * as Listbox from '$soma/components/listbox';",
			'  let value = $state<string[]>([]);',
			'</' + 'script>',
			'',
			'<Listbox.Provider',
			'  bind:value',
			selectionMode !== 'single' && `  selectionMode="${selectionMode}"`,
			orientation !== 'vertical' && `  orientation="${orientation}"`,
			!loop && '  loop={false}',
			!typeahead && '  typeahead={false}',
			disabled && '  disabled',
			invalid && '  invalid',
			'>',
			'  <Listbox.Item value="apple">Apple</Listbox.Item>',
			'  <Listbox.Item value="banana">Banana</Listbox.Item>',
			'  <Listbox.Item value="cherry" disabled>Cherry</Listbox.Item>',
			'</Listbox.Provider>'
		]
			.filter(Boolean)
			.join('\n')
	);

	const eidosSnippet = $derived(
		[
			"<script lang='ts'>",
			"  import { Listbox } from '$uix/eidos/components/listbox';",
			'  let value = $state<string[]>([]);',
			'</' + 'script>',
			'',
			'<Listbox',
			'  bind:value',
			selectionMode !== 'single' && `  selectionMode="${selectionMode}"`,
			size !== 'md' && `  size="${size}"`,
			variant !== 'surface' && `  variant="${variant}"`,
			color !== 'primary' && `  color="${color}"`,
			orientation !== 'vertical' && `  orientation="${orientation}"`,
			!loop && '  loop={false}',
			block && '  block',
			disabled && '  disabled',
			invalid && '  invalid',
			'>',
			'  <Listbox.Item value="apple">',
			'    <Listbox.ItemIndicator />',
			'    Apple',
			'  </Listbox.Item>',
			'  <Listbox.Item value="banana">',
			'    <Listbox.ItemIndicator />',
			'    Banana',
			'  </Listbox.Item>',
			'  <Listbox.Group>',
			'    <Listbox.GroupLabel>Citrus</Listbox.GroupLabel>',
			'    <Listbox.Item value="orange">Orange</Listbox.Item>',
			'  </Listbox.Group>',
			'</Listbox>'
		]
			.filter(Boolean)
			.join('\n')
	);
</script>

<div data-uix-canvas-inner>
	<header>
		<div data-uix-eyebrow>Forms · Listbox</div>
		<h1 data-uix-page-title>Listbox</h1>
		<p data-uix-page-lede>
			Embedded selection list (<code>role="listbox"</code>) with single or multiple selection,
			roving-tabindex keyboard nav, alphanumeric typeahead, ARIA-grouped sections, and form
			participation. Soma OR-merges <code>disabled</code> / <code>readonly</code> /
			<code>required</code> / <code>invalid</code> with
			<code>Field.Provider</code> when nested. For atomic options only — use <code>GridList</code>
			when rows contain interactive children, or <code>Select</code> / <code>Combobox</code> when the
			surface is a closed combobox-style picker.
		</p>
		<div data-uix-page-meta>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>parts</span>{compiled.parts.order.length}
			</span>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>events</span>{events.length}
			</span>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>sizes</span>5
			</span>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>apg</span>
				<a href={listboxMorfo.apg} target="_blank" rel="noreferrer">listbox ↗</a>
			</span>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>selected</span>
				{value.join(', ') || '—'}
			</span>
		</div>
	</header>

	<div data-uix-stage>
		<div
			data-uix-stage-area
			bind:this={stageRef}
			style="min-block-size: 14rem; padding: var(--uix-space-3); display: flex; justify-content: center;"
		>
			<div style="inline-size: min(20rem, 100%);">
				<Listbox
					bind:value
					{selectionMode}
					{size}
					{variant}
					{color}
					{orientation}
					{loop}
					{typeahead}
					{disabled}
					{invalid}
					{block}
				>
					<Listbox.Item value="apple">
						<Listbox.ItemIndicator />
						Apple
					</Listbox.Item>
					<Listbox.Item value="banana">
						<Listbox.ItemIndicator />
						Banana
					</Listbox.Item>
					<Listbox.Item value="cherry" disabled>
						<Listbox.ItemIndicator />
						Cherry (disabled)
					</Listbox.Item>
					<Listbox.Group>
						<Listbox.GroupLabel>Citrus</Listbox.GroupLabel>
						<Listbox.Item value="orange">
							<Listbox.ItemIndicator />
							Orange
						</Listbox.Item>
						<Listbox.Item value="lemon">
							<Listbox.ItemIndicator />
							Lemon
						</Listbox.Item>
						<Listbox.Item value="grapefruit">
							<Listbox.ItemIndicator />
							Grapefruit
						</Listbox.Item>
					</Listbox.Group>
					<Listbox.Group>
						<Listbox.GroupLabel>Berries</Listbox.GroupLabel>
						<Listbox.Item value="strawberry">
							<Listbox.ItemIndicator />
							Strawberry
						</Listbox.Item>
						<Listbox.Item value="blueberry">
							<Listbox.ItemIndicator />
							Blueberry
						</Listbox.Item>
					</Listbox.Group>
				</Listbox>
			</div>
		</div>
		<div data-uix-stage-trace>
			<span data-uix-stage-trace-key>trace</span>
			{#if trace.length === 0}
				<span>focus the listbox + arrow / type to highlight</span>
			{:else}
				{#each trace.slice(0, 3) as entry}
					<span
						><span data-uix-stage-trace-event>{entry.event}</span> · {entry.family}{entry.intent
							? ' · ' + entry.intent
							: ''}</span
					>
					<span style="color: var(--uix-text-faint)">{fmtTime(entry.at)}</span>
				{/each}
			{/if}
			<span style="margin-inline-start: auto;">
				<span data-uix-stage-trace-key>value</span> [{value.join(', ')}]
			</span>
		</div>
	</div>

	<div data-uix-tabs role="tablist">
		<button data-uix-tab data-active={tab === 'live'} onclick={() => (tab = 'live')}>Live</button>
		<button data-uix-tab data-active={tab === 'api'} onclick={() => (tab = 'api')}>
			API <span data-uix-tab-count>5</span>
		</button>
		<button data-uix-tab data-active={tab === 'morfo'} onclick={() => (tab = 'morfo')}>
			<span data-uix-layer-badge="morfo">morfo</span>
			<span data-uix-tab-count>{partsList.length}p · {events.length}e</span>
		</button>
		<button data-uix-tab data-active={tab === 'sema'} onclick={() => (tab = 'sema')}>
			<span data-uix-layer-badge="sema">sema</span>
			<span data-uix-tab-count>{events.length}</span>
		</button>
		<button data-uix-tab data-active={tab === 'recipe'} onclick={() => (tab = 'recipe')}
			>Recipe</button
		>
		<button data-uix-tab data-active={tab === 'tokens'} onclick={() => (tab = 'tokens')}>
			Tokens <span data-uix-tab-count>21</span>
		</button>
		<button data-uix-tab data-active={tab === 'a11y'} onclick={() => (tab = 'a11y')}>A11y</button>
	</div>

	{#if tab === 'live'}
		<section data-uix-section>
			<h2 data-uix-section-title>Controls</h2>
			<p data-uix-section-desc>
				Soma owns selection + nav + typeahead. Eidos adds
				<code>variant</code> / <code>size</code> / <code>color</code> chrome.
			</p>

			<div data-uix-subsection-head>
				<span data-uix-layer-badge="soma">soma</span> Provider props
			</div>
			<div data-uix-controls>
				<label data-uix-control>
					<span data-uix-control-label>selectionMode</span>
					<span data-uix-chips role="radiogroup">
						{#each ['single', 'multiple'] as m (m)}
							<button
								data-uix-chip
								data-active={selectionMode === m}
								onclick={() => (selectionMode = m as ListboxSelectionMode)}>{m}</button
							>
						{/each}
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>orientation</span>
					<span data-uix-chips role="radiogroup">
						{#each ['vertical', 'horizontal'] as o (o)}
							<button
								data-uix-chip
								data-active={orientation === o}
								onclick={() => (orientation = o as typeof orientation)}>{o}</button
							>
						{/each}
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>loop</span>
					<span data-uix-switch>
						<input type="checkbox" bind:checked={loop} />
						<span data-uix-switch-label>{loop ? 'on' : 'off'}</span>
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>typeahead</span>
					<span data-uix-switch>
						<input type="checkbox" bind:checked={typeahead} />
						<span data-uix-switch-label>{typeahead ? 'on' : 'off'}</span>
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>disabled</span>
					<span data-uix-switch>
						<input type="checkbox" bind:checked={disabled} />
						<span data-uix-switch-label>{disabled ? 'on' : 'off'}</span>
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>invalid</span>
					<span data-uix-switch>
						<input type="checkbox" bind:checked={invalid} />
						<span data-uix-switch-label>{invalid ? 'on' : 'off'}</span>
					</span>
				</label>
			</div>

			<div data-uix-subsection-head>
				<span data-uix-layer-badge="eidos">eidos</span> visual props
			</div>
			<div data-uix-controls>
				<label data-uix-control>
					<span data-uix-control-label
						>variant <span data-uix-control-hint>ControlVariant</span></span
					>
					<span data-uix-chips role="radiogroup">
						{#each ['surface', 'outline', 'ghost'] as v (v)}
							<button
								data-uix-chip
								data-active={variant === v}
								onclick={() => (variant = v as ListboxVariant)}>{v}</button
							>
						{/each}
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>size</span>
					<span data-uix-chips role="radiogroup">
						{#each ['xs', 'sm', 'md', 'lg', 'xl'] as s (s)}
							<button
								data-uix-chip
								data-active={size === s}
								onclick={() => (size = s as ListboxSize)}>{s}</button
							>
						{/each}
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>color</span>
					<span data-uix-chips role="radiogroup">
						{#each ['primary', 'secondary', 'neutral', 'affirm', 'fulfill', 'risk', 'threat', 'loss'] as c (c)}
							<button
								data-uix-chip
								data-active={color === c}
								onclick={() => (color = c as ListboxColor)}>{c}</button
							>
						{/each}
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>block</span>
					<span data-uix-switch>
						<input type="checkbox" bind:checked={block} />
						<span data-uix-switch-label>{block ? 'on' : 'off'}</span>
					</span>
				</label>
			</div>

			<div data-uix-code>
				<div data-uix-code-head>
					<span data-uix-layer-badge="soma">soma</span>
					<span>headless · selection + keyboard + Field merge</span>
					<span data-uix-code-lang>svelte</span>
				</div>
				<pre><code>{somaSnippet}</code></pre>
			</div>

			<div data-uix-code style="margin-top: var(--uix-space-3);">
				<div data-uix-code-head>
					<span data-uix-layer-badge="eidos">eidos</span>
					<span>visual · variant + size + color</span>
					<span data-uix-code-lang>svelte</span>
				</div>
				<pre><code>{eidosSnippet}</code></pre>
			</div>
		</section>
	{/if}

	{#if tab === 'api'}
		<section data-uix-section>
			<h2 data-uix-section-title>API reference</h2>
			<p data-uix-section-desc>5 parts: Root, Item, ItemIndicator, Group, GroupLabel.</p>

			<div data-uix-subsection-head>Root (Listbox)</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Prop</th><th>Type</th><th>Default</th><th>Description</th></tr></thead>
					<tbody>
						<tr
							><td class="name">value <span data-uix-tag data-kind="bindable">bindable</span></td
							><td class="type">string[]</td><td class="default">[]</td><td
								>Current selection. Always string[]; single mode keeps at most one entry.</td
							></tr
						>
						<tr
							><td class="name">selectionMode</td><td class="type">'single' | 'multiple'</td><td
								class="default">'single'</td
							><td>Selection behavior.</td></tr
						>
						<tr
							><td class="name">loop</td><td class="type">boolean</td><td class="default">true</td
							><td>Wrap arrow nav at edges.</td></tr
						>
						<tr
							><td class="name">typeahead</td><td class="type">boolean</td><td class="default"
								>true</td
							><td>Alphanumeric jump-to-item.</td></tr
						>
						<tr
							><td class="name">orientation</td><td class="type">'vertical' | 'horizontal'</td><td
								class="default">'vertical'</td
							><td>Arrow nav axis.</td></tr
						>
						<tr
							><td class="name">disabled · readonly · required · invalid</td><td class="type"
								>boolean</td
							><td class="default">false</td><td>OR-merged with Field.Provider when nested.</td></tr
						>
						<tr
							><td class="name">name</td><td class="type">string</td><td class="default empty">—</td
							><td>Form name → hidden inputs per selected value.</td></tr
						>
						<tr
							><td class="name">variant <span data-uix-tag data-kind="eidos">eidos</span></td><td
								class="type">ControlVariant: 'surface' | 'outline' | 'ghost'</td
							><td class="default">'surface'</td><td>Container chrome.</td></tr
						>
						<tr
							><td class="name">size <span data-uix-tag data-kind="eidos">eidos</span></td><td
								class="type">'xs' | 'sm' | 'md' | 'lg' | 'xl'</td
							><td class="default">'md'</td><td>Item height + font-size.</td></tr
						>
						<tr
							><td class="name">color <span data-uix-tag data-kind="eidos">eidos</span></td><td
								class="type">ColorRole</td
							><td class="default">'primary'</td><td
								>Selected-item highlight + focus ring accent.</td
							></tr
						>
						<tr
							><td class="name">block <span data-uix-tag data-kind="eidos">eidos</span></td><td
								class="type">boolean</td
							><td class="default">false</td><td>Fill container's inline-size.</td></tr
						>
					</tbody>
				</table>
			</div>

			<div data-uix-subsection-head>Item</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Prop</th><th>Type</th><th>Default</th><th>Description</th></tr></thead>
					<tbody>
						<tr
							><td class="name">value</td><td class="type">string</td><td class="default empty"
								>required</td
							><td>Unique identifier in the listbox.</td></tr
						>
						<tr
							><td class="name">disabled</td><td class="type">boolean</td><td class="default"
								>false</td
							><td>Skip the item from keyboard nav + click selection.</td></tr
						>
					</tbody>
				</table>
			</div>

			<div data-uix-subsection-head>ItemIndicator · Group · GroupLabel</div>
			<p data-uix-section-desc style="margin-top: 0.25rem;">
				<code>ItemIndicator</code> renders a ✓ glyph inside selected items (same recipe as
				menu-indicator partial). <code>Group</code> wraps a logical section; <code>GroupLabel</code>
				is the muted heading (ARIA-linked via <code>aria-labelledby</code>).
			</p>
		</section>
	{/if}

	{#if tab === 'morfo'}
		<section data-uix-section>
			<h2 data-uix-section-title>
				<span data-uix-layer-badge="morfo">morfo</span>
				· declarative contract
			</h2>
			<p data-uix-section-desc>Source: <code>src/uix/morfo/components/listbox.ts</code>.</p>

			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Field</th><th>Value</th></tr></thead>
					<tbody>
						<tr><td class="name">name</td><td class="type">"{listboxMorfo.name}"</td></tr>
						<tr><td class="name">kebab</td><td class="type">"{listboxMorfo.kebab}"</td></tr>
						<tr
							><td class="name">scope</td><td class="type"
								>[{listboxMorfo.scope.map((s) => `"${s}"`).join(', ')}]</td
							></tr
						>
						<tr
							><td class="name">apg</td><td
								><a href={listboxMorfo.apg} target="_blank" rel="noreferrer">{listboxMorfo.apg}</a
								></td
							></tr
						>
						<tr
							><td class="name">parts.length</td><td class="default">{listboxMorfo.parts.length}</td
							></tr
						>
						<tr><td class="name">events.length</td><td class="default">{events.length}</td></tr>
					</tbody>
				</table>
			</div>

			<div data-uix-subsection-head>Parts</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead
						><tr
							><th>Part</th><th>Marker</th><th>Element</th><th>Role</th><th>Archetype</th><th
								>States</th
							><th>Optional</th></tr
						></thead
					>
					<tbody>
						{#each partsList as part (part.kebab)}
							<tr>
								<td class="name">{part.kebab}</td>
								<td><code data-uix-part-marker>[{part.marker}]</code></td>
								<td class="type">&lt;{part.defaultElement}&gt;</td>
								<td class="type">{part.role ?? '—'}</td>
								<td class="default">{part.archetype ?? '—'}</td>
								<td class="default">{part.states.length ? part.states.join(' | ') : '—'}</td>
								<td class="default">{part.optional ? 'yes' : 'no'}</td>
							</tr>
						{/each}
					</tbody>
				</table>
			</div>

			<div data-uix-subsection-head>Events declaration</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead
						><tr
							><th>name</th><th>family</th><th>verb</th><th>sequence</th><th>intent</th><th
								>target</th
							></tr
						></thead
					>
					<tbody>
						{#each events as action (action.name)}
							{@const sem = action.semantic}
							{@const intentDecl = 'intent' in sem ? sem.intent : undefined}
							{@const intentStr =
								typeof intentDecl === 'string'
									? intentDecl
									: intentDecl
										? `fromProp:${(intentDecl as { fromProp?: string }).fromProp ?? '?'}`
										: '—'}
							<tr>
								<td class="name">{action.name}</td>
								<td class="type">{sem.family}</td>
								<td>{sem.verb ?? '—'}</td>
								<td>{sem.sequence ?? 'pre'}</td>
								<td class="default">{intentStr}</td>
								<td>{action.target}</td>
							</tr>
						{/each}
					</tbody>
				</table>
			</div>
		</section>
	{/if}

	{#if tab === 'sema'}
		<section data-uix-section id="sema">
			<h2 data-uix-section-title>
				<span data-uix-layer-badge="sema">sema</span>
				· events
			</h2>
			<p data-uix-section-desc>
				Two events: <code>commit-select</code> (intent <code>affirm</code>) when an item enters the
				selection; <code>commit-unselect</code>
				(intent <code>neutral</code>) when it leaves.
			</p>

			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead
						><tr
							><th>Name</th><th>Family</th><th>Verb</th><th>Sequence</th><th>Intent</th><th>Play</th
							></tr
						></thead
					>
					<tbody>
						{#each events as action (action.name)}
							{@const intentDecl = 'intent' in action.semantic ? action.semantic.intent : undefined}
							{@const effectiveIntent = typeof intentDecl === 'string' ? intentDecl : undefined}
							<tr>
								<td class="name">{action.name}</td>
								<td class="type">{action.semantic.family}</td>
								<td>{action.semantic.verb ?? '—'}</td>
								<td>{action.semantic.sequence ?? 'pre'}</td>
								<td class="default">{effectiveIntent ?? '—'}</td>
								<td>
									<button
										data-uix-play
										onclick={() => {
											const target = (stageRef?.querySelector('[data-listbox-item]') ??
												stageRef) as HTMLElement | null;
											if (!target) return;
											void uix.events?.emit({
												name: action.name,
												family: action.semantic.family,
												target,
												...(effectiveIntent ? { intent: effectiveIntent } : {})
											});
										}}>▶ play</button
									>
								</td>
							</tr>
						{/each}
					</tbody>
				</table>
			</div>
		</section>
	{/if}

	{#if tab === 'recipe'}
		<section data-uix-section>
			<h2 data-uix-section-title>Eidos recipe</h2>
			<p data-uix-section-desc>
				Selectors at <code>src/uix/eidos/components/listbox/listbox.css</code>.
			</p>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Selector</th><th>Source</th><th>What it paints</th></tr></thead>
					<tbody>
						<tr
							><td class="name">[data-listbox]</td><td
								><span data-uix-tag data-kind="eidos">eidos</span></td
							><td>Container — flex column, gap, border, padding.</td></tr
						>
						<tr
							><td class="name">[data-listbox][data-size]</td><td
								><span data-uix-tag data-kind="eidos">eidos</span></td
							><td>Item height + font-size scale.</td></tr
						>
						<tr
							><td class="name">[data-listbox][data-variant='outline' | 'ghost']</td><td
								><span data-uix-tag data-kind="eidos">eidos</span></td
							><td>Container chrome (border + bg).</td></tr
						>
						<tr
							><td class="name">[data-listbox][data-color]</td><td
								><span data-uix-tag data-kind="eidos">eidos</span></td
							><td>Accent palette for selected highlight + focus ring.</td></tr
						>
						<tr
							><td class="name">[data-listbox][data-invalid]</td><td
								><span data-uix-tag data-kind="soma">morfo</span></td
							><td>Threat-coloured border override.</td></tr
						>
						<tr
							><td class="name">[data-listbox-item]</td><td
								><span data-uix-tag data-kind="soma">morfo</span></td
							><td>Option row — flex, padding, hover/highlight states.</td></tr
						>
						<tr
							><td class="name">[data-listbox-item][data-selected]</td><td
								><span data-uix-tag data-kind="soma">morfo</span></td
							><td>Selected-state band (accent-soft fill).</td></tr
						>
						<tr
							><td class="name">[data-listbox-item-indicator]</td><td
								><span data-uix-tag data-kind="soma">morfo</span></td
							><td>Hidden by default; revealed inside selected items.</td></tr
						>
						<tr
							><td class="name">[data-listbox-group-label]</td><td
								><span data-uix-tag data-kind="soma">morfo</span></td
							><td>Muted uppercase section heading.</td></tr
						>
					</tbody>
				</table>
			</div>
		</section>
	{/if}

	{#if tab === 'tokens'}
		<TokensPanel component="listbox" stage={stageRef ?? undefined} />
	{/if}

	{#if tab === 'a11y'}
		<section data-uix-section>
			<h2 data-uix-section-title>Accessibility</h2>
			<p data-uix-section-desc>
				Follows the APG <a href={listboxMorfo.apg} target="_blank" rel="noreferrer"
					>listbox pattern</a
				>. Container is <code>role="listbox"</code>; each Item is
				<code>role="option"</code> with <code>aria-selected</code>; Group is
				<code>role="group"</code>
				with
				<code>aria-labelledby</code> pointing to GroupLabel.
				<code>aria-multiselectable</code> is stamped automatically in <code>multiple</code> mode.
			</p>

			<div data-uix-subsection-head>Keyboard</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Key</th><th>Action</th></tr></thead>
					<tbody>
						<tr
							><td><span data-uix-kbd>ArrowDown</span> / <span data-uix-kbd>ArrowUp</span></td><td
								>Move highlight ±1 (vertical orientation).</td
							></tr
						>
						<tr
							><td><span data-uix-kbd>ArrowRight</span> / <span data-uix-kbd>ArrowLeft</span></td
							><td>Same but for horizontal orientation; RTL inverts.</td></tr
						>
						<tr
							><td><span data-uix-kbd>Home</span> / <span data-uix-kbd>End</span></td><td
								>First / last item.</td
							></tr
						>
						<tr
							><td><span data-uix-kbd>Enter</span> / <span data-uix-kbd>Space</span></td><td
								>Toggle selection of highlighted item.</td
							></tr
						>
						<tr
							><td><span data-uix-kbd>Ctrl/Cmd+A</span></td><td>Select all (multiple mode only).</td
							></tr
						>
						<tr
							><td>Letter / digit</td><td
								>Typeahead — focus next item starting with that character.</td
							></tr
						>
					</tbody>
				</table>
			</div>

			<div data-uix-subsection-head>ARIA contract</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Part</th><th>Attribute</th><th>Value</th></tr></thead>
					<tbody>
						<tr><td class="name">listbox</td><td>role</td><td class="type">"listbox"</td></tr>
						<tr
							><td class="name">listbox</td><td>aria-multiselectable</td><td class="type"
								>"true" (multiple mode)</td
							></tr
						>
						<tr
							><td class="name">listbox</td><td>aria-orientation</td><td class="type"
								>"horizontal" | "vertical"</td
							></tr
						>
						<tr
							><td class="name">listbox</td><td
								>aria-disabled / aria-readonly / aria-required / aria-invalid</td
							><td class="type">flags</td></tr
						>
						<tr><td class="name">item</td><td>role</td><td class="type">"option"</td></tr>
						<tr
							><td class="name">item</td><td>aria-selected</td><td class="type">"true" | "false"</td
							></tr
						>
						<tr
							><td class="name">item</td><td>aria-disabled</td><td class="type"
								>"true" (disabled)</td
							></tr
						>
						<tr><td class="name">group</td><td>role</td><td class="type">"group"</td></tr>
						<tr
							><td class="name">group</td><td>aria-labelledby</td><td class="type"
								>{`<group-label id>`}</td
							></tr
						>
					</tbody>
				</table>
			</div>
		</section>
	{/if}
</div>