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

<script lang="ts">
	import {
		Container,
		type ContainerProps,
		type ContainerSize,
		type ContainerAlign
	} from '$uix/eidos/components/container';
	import { Box } from '$uix/eidos/components/box';
	import { compileMorfo } from '$uix/morfo';
	import { containerMorfo } from '@/uix/morfo/components/container';

	type Tab = 'live' | 'api' | 'morfo' | 'sema' | 'recipe' | 'a11y';
	type TraceEntry = { event: string; family: string; intent?: string; at: number };
	let tab = $state<Tab>('live');
	let trace = $state<TraceEntry[]>([]);
	let stageRef = $state<HTMLElement | null>(null);

	// ── Live state — Container props ──────────────────────────────────────
	let size = $state<ContainerSize>('md');
	let align = $state<ContainerAlign>('center');
	let paddingX = $state<string>('');
	let paddingY = $state<number>(4);

	const sizeOptions: readonly ContainerSize[] = ['sm', 'md', 'lg', 'xl', 'xxl', 'full'];
	const alignOptions: readonly ContainerAlign[] = ['left', 'center', 'right'];

	const containerProps = $derived<Partial<ContainerProps>>({
		size,
		align,
		paddingX: paddingX || undefined,
		paddingY
	});

	// ── Compiled morfo ────────────────────────────────────────────────────
	const compiled = compileMorfo(containerMorfo);
	const partsList = $derived([...compiled.parts.byKebab.values()]);
	const events = $derived([...compiled.actions.byName.values()]);

	$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();
	});

	// ── Code snippet ──────────────────────────────────────────────────────
	const eidosSnippet = $derived(
		[
			"<script lang='ts'>",
			"  import { Container } from '$uix/eidos/components/container';",
			'</' + 'script>',
			'',
			'<Container',
			size !== 'xl' && `  size="${size}"`,
			align !== 'center' && `  align="${align}"`,
			paddingX && `  paddingX="${paddingX}"`,
			paddingY > 0 && `  paddingY={${paddingY}}`,
			'>',
			'  …',
			'</Container>'
		]
			.filter(Boolean)
			.join('\n')
	);
</script>

<div data-uix-canvas-inner>
	<header>
		<div data-uix-eyebrow>Layout · Container</div>
		<h1 data-uix-page-title>Container</h1>
		<p data-uix-page-lede>
			Max-width centred content shell. Caps content at one of six tokens
			(<code>sm · md · lg · xl · xxl · full</code>), applies a default horizontal padding via
			<code>--container-padding-inline</code>, and centres via auto inline margins (or
			<code>align="left"</code> / <code>align="right"</code>). For arbitrary
			<code>max-width</code> values use <a href="/uix/components/box">&lt;Box&gt;</a> directly;
			for semantic block padding use <a href="/uix/components/section">&lt;Section&gt;</a>.
		</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>0
			</span>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>sizes</span>{sizeOptions.length}
			</span>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>scope</span>eidos
			</span>
		</div>
	</header>

	<!-- Live preview always rendered -->
	<div data-uix-stage>
		<div
			data-uix-stage-area
			bind:this={stageRef}
			style="background: repeating-linear-gradient(45deg, transparent 0 8px, var(--color-surface-2) 8px 9px); inline-size: 100%;"
		>
			<Container
				{...containerProps}
				style="border: 1px dashed var(--color-border-default); border-radius: var(--radius-md); background: var(--color-surface-1);"
			>
				<Box
					padding={3}
					style="border: 1px solid var(--color-primary-border); border-radius: var(--radius-sm); background: var(--color-primary-track); color: var(--color-primary-text); text-align: center;"
				>
					Content (max-width: var(--container-width-{size}))
				</Box>
			</Container>
		</div>
		<div data-uix-stage-trace>
			<span data-uix-stage-trace-key>trace</span>
			<span>{trace.length === 0 ? 'no semantic events' : `${trace.length} event(s)`}</span>
			<span style="color: var(--uix-text-faint)">·</span>
			<span data-uix-stage-trace-key>size</span>
			<span>{size}</span>
			<span style="margin-inline-start: auto;">
				<span data-uix-stage-trace-key>align</span> {align} ·
				<span data-uix-stage-trace-key>paddingY</span> {paddingY}
			</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>4</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 · 0e</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 === '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>
				Container is eidos-native — no <span data-uix-layer-badge="soma">soma</span> split.
				The hatched background of the stage shows the parent's width; the bordered region is
				what Container caps. <code>full</code> removes the cap entirely. Container also
				inherits every <a href="/uix/components/box">Box</a> prop (padding, margin) via
				composition.
			</p>

			<div data-uix-subsection-head>
				<span data-uix-layer-badge="eidos">eidos</span> props · width &amp; alignment
			</div>
			<div data-uix-controls>
				<label data-uix-control>
					<span data-uix-control-label>size <span data-uix-control-hint>→ var(--container-width-N)</span></span>
					<span data-uix-chips role="radiogroup">
						{#each sizeOptions as opt}
							<button data-uix-chip data-active={size === opt} onclick={() => (size = opt)}
								>{opt}</button
							>
						{/each}
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>align <span data-uix-control-hint>horizontal alignment within parent</span></span>
					<span data-uix-chips role="radiogroup">
						{#each alignOptions as opt}
							<button data-uix-chip data-active={align === opt} onclick={() => (align = opt)}
								>{opt}</button
							>
						{/each}
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>paddingX <span data-uix-control-hint>override default inline padding</span></span>
					<input
						type="text"
						placeholder="(token default)"
						bind:value={paddingX}
						style="inline-size: 12rem;"
					/>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>paddingY <span data-uix-control-hint>0–8 → var(--space-N)</span></span>
					<input
						type="number"
						min="0"
						max="8"
						step="1"
						bind:value={paddingY}
						style="inline-size: 6rem;"
					/>
				</label>
			</div>

			<!-- ── Code snippet (eidos-native — no soma layer) ──────────────── -->
			<div data-uix-code>
				<div data-uix-code-head>
					<span data-uix-layer-badge="eidos">eidos</span>
					<span>visual · size token + auto inline margins</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>
				Container layers <code>max-inline-size</code>, <code>padding-inline</code> and
				<code>margin-inline</code> rules on top of <a href="/uix/components/box"
					><code>&lt;Box&gt;</code></a
				>. Sizes are tokens defined in the eidos foundation; <code>full</code> removes the cap
				(<code>max-width: none</code>). For arbitrary <code>max-width</code> values pass
				<code>maxWidth</code> on Box directly.
			</p>

			<div data-uix-subsection-head>Width &amp; alignment</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Prop</th><th>Type</th><th>Default</th><th>Notes</th></tr></thead>
					<tbody>
						<tr><td class="name">size</td><td class="type">sm | md | lg | xl | xxl | full</td><td class="default">'xl'</td><td>Maps to <code>--container-width-{`{size}`}</code> token. <code>full</code> uncaps.</td></tr>
						<tr><td class="name">align</td><td class="type">left | center | right</td><td class="default">'center'</td><td>Drives <code>margin-inline</code>: <code>auto</code>/<code>0</code> combinations.</td></tr>
					</tbody>
				</table>
			</div>

			<div data-uix-subsection-head>Padding</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Prop</th><th>Type</th><th>Default</th><th>Notes</th></tr></thead>
					<tbody>
						<tr><td class="name">paddingX</td><td class="type">number | string</td><td class="default">'var(--container-padding-inline)'</td><td>Default comes from the foundation token; override per-instance.</td></tr>
						<tr><td class="name">paddingY</td><td class="type">number | string</td><td class="default empty">—</td><td>Inherited from Box; default is 0. Use <a href="/uix/components/section">&lt;Section&gt;</a> if you want token-keyed block padding.</td></tr>
					</tbody>
				</table>
			</div>

			<div data-uix-subsection-head>Inherited from Box</div>
			<p data-uix-section-desc>
				Every <a href="/uix/components/box">BoxProps</a> field is forwarded:
				<code>padding*</code>, <code>margin*</code>, <code>width</code> (locked to 100% by
				Container), <code>height</code>, <code>position</code>, <code>overflow*</code>. Note
				that Container sets <code>marginLeft</code> / <code>marginRight</code> from
				<code>align</code>, so manual <code>marginX</code> overrides override the alignment.
			</p>

			<div data-uix-subsection-head>Reference comparison</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Library</th><th>Closest equivalent</th><th>Difference</th></tr></thead>
					<tbody>
						<tr><td class="name">radix-themes</td><td><code>&lt;Container&gt;</code></td><td>Radix exposes 4 sizes (<code>1..4</code>); UIX uses 6 named tokens (<code>sm..xxl</code> + <code>full</code>). Same centred-by-default shape.</td></tr>
						<tr><td class="name">chakra-ui</td><td><code>&lt;Container&gt;</code></td><td>Chakra defaults to <code>maxW="60ch"</code> regardless of theme; UIX wires through to foundation tokens for project-wide consistency.</td></tr>
						<tr><td class="name">mantine</td><td><code>&lt;Container&gt;</code></td><td>Mantine takes <code>size="xs|sm|md|lg|xl"</code> or a raw number; UIX matches the named scale and adds <code>full</code> to opt out.</td></tr>
					</tbody>
				</table>
			</div>
		</section>
	{/if}

	{#if tab === 'morfo'}
		<section data-uix-section>
			<h2 data-uix-section-title>Morfo contract</h2>

			<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>{containerMorfo.name}</td></tr>
						<tr><td class="name">kebab</td><td><code>{containerMorfo.kebab}</code></td></tr>
						<tr><td class="name">scope</td><td>{containerMorfo.scope.join(', ')}</td></tr>
						<tr><td class="name">parts</td><td>{partsList.length}</td></tr>
						<tr><td class="name">events</td><td>0</td></tr>
					</tbody>
				</table>
			</div>

			<div data-uix-subsection-head>Parts</div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>kebab</th><th>marker</th><th>element</th><th>archetype</th><th>optional</th></tr></thead>
					<tbody>
						{#each partsList as part}
							<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.archetype}</td>
								<td class="default">{part.optional ? 'yes' : 'no'}</td>
							</tr>
						{/each}
					</tbody>
				</table>
			</div>

			<p data-uix-section-desc style="margin-top: var(--uix-space-4);">
				Container composes through <code>&lt;Box&gt;</code>, so the rendered DOM is a single
				<code>div[data-box][data-container]</code> shell with <code>data-size</code> and
				<code>data-align</code> attributes for selector targeting.
			</p>
		</section>
	{/if}

	{#if tab === 'sema'}
		<section data-uix-section>
			<h2 data-uix-section-title>
				<span data-uix-layer-badge="sema">sema</span> · events
			</h2>
			<p data-uix-section-desc>
				Container declares no semantic events. As a passive layout primitive, it does not
				commit, emerge, or react to anything — it just constrains its children's width.
				Content inside the container owns its own sema.
			</p>
		</section>
	{/if}

	{#if tab === 'recipe'}
		<section data-uix-section>
			<h2 data-uix-section-title>Eidos recipe</h2>
			<p data-uix-section-desc>
				Container reads <code>--container-width-{`{size}`}</code> and
				<code>--container-padding-inline</code> from the eidos foundation. The Svelte
				component computes the resolved width and margins inline; the recipe at
				<code>src/uix/eidos/components/container/container.css</code> mostly carries the
				marker.
			</p>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Selector</th><th>Owner</th><th>Purpose</th></tr></thead>
					<tbody>
						<tr>
							<td class="name"><code>[data-container]</code></td>
							<td><span data-uix-tag data-kind="morfo">morfo</span></td>
							<td>Provider marker.</td>
						</tr>
						<tr>
							<td class="name"><code>[data-container][data-size='{`{size}`}']</code></td>
							<td><span data-uix-tag data-kind="eidos">eidos</span></td>
							<td>Per-size hooks (currently used by the component's inline style, available for consumer overrides).</td>
						</tr>
					</tbody>
				</table>
			</div>
		</section>
	{/if}

	{#if tab === 'a11y'}
		<section data-uix-section>
			<h2 data-uix-section-title>Accessibility</h2>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Concern</th><th>Contract</th></tr></thead>
					<tbody>
						<tr><td class="name">Role</td><td>None implicit. Default element is <code>&lt;div&gt;</code> — semantically neutral. Container is a layout wrapper; landmarks (<code>&lt;main&gt;</code>, <code>&lt;article&gt;</code>) belong on a separate element.</td></tr>
						<tr><td class="name">Label</td><td>Not applicable.</td></tr>
						<tr><td class="name">Keyboard</td><td>Container is not focusable. Tab order follows DOM order.</td></tr>
						<tr><td class="name">Reduced motion</td><td>Container does not animate.</td></tr>
					</tbody>
				</table>
			</div>
		</section>
	{/if}
</div>