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

<script lang="ts">
	import {
		CodeBlock,
		type CodeBlockVariant,
		type CodeBlockSize
	} from '$uix/eidos/components/code-block';
	import { compileMorfo } from '$uix/morfo';
	import { codeBlockMorfo } from '@/uix/morfo/components/code-block';

	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);

	let variant = $state<CodeBlockVariant>('surface');
	let size = $state<CodeBlockSize | ''>('');
	let title = $state<string>('example.ts');
	let language = $state<string>('ts');
	let showCopy = $state(true);
	let content = $state<string>(
		`import { CodeBlock } from '$uix/eidos/components/code-block';\n\nexport function example() {\n  return 42;\n}`
	);

	const variants: CodeBlockVariant[] = ['surface', 'outline', 'ghost'];
	const sizes: CodeBlockSize[] = ['xxs', 'xs', 'sm', 'md', 'lg', 'xl'];

	const compiled = compileMorfo(codeBlockMorfo);
	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();
	});

	const eidosSnippet = $derived(
		[
			"<script lang='ts'>",
			"  import { CodeBlock } from '$uix/eidos/components/code-block';",
			'</' + 'script>',
			'',
			'<CodeBlock',
			variant !== 'surface' && `  variant="${variant}"`,
			size && `  size="${size}"`,
			title && `  title="${title}"`,
			language && `  language="${language}"`,
			!showCopy && '  showCopy={false}',
			'>',
			'  {`' + content.replace(/`/g, '\\`') + '`}',
			'</CodeBlock>'
		]
			.filter(Boolean)
			.join('\n')
	);
</script>

<div data-uix-canvas-inner>
	<header>
		<div data-uix-eyebrow>Typography · CodeBlock</div>
		<h1 data-uix-page-title>CodeBlock</h1>
		<p data-uix-page-lede>
			Multi-line code block primitive. Renders a <code>{`<div>`}</code> shell wrapping a
			<code>{`<pre><code>`}</code>
			body, with an optional header strip carrying title, language badge, and copy-to-clipboard
			button. The copy button is a leaf utility — it does not emit Sema events. Single morfo
			part. Eidos-native: no soma backing, no semantic events.
		</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>variants</span>3
			</span>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>copy</span>opt-in
			</span>
			<span data-uix-meta-pill>
				<span data-uix-meta-key>scope</span>eidos
			</span>
		</div>
	</header>

	<div data-uix-stage>
		<div data-uix-stage-area bind:this={stageRef}>
			<div style="max-inline-size: 42rem;">
				<CodeBlock
					{variant}
					size={size || undefined}
					title={title || undefined}
					language={language || undefined}
					{showCopy}
				>
					{content}
				</CodeBlock>
			</div>
		</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>variant</span>
			<span>{variant}</span>
			<span style="margin-inline-start: auto;">
				<span data-uix-stage-trace-key>language</span> {language || 'none'} ·
				<span data-uix-stage-trace-key>copy</span> {showCopy ? 'on' : 'off'}
			</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>7</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>
				CodeBlock is eidos-native — no <span data-uix-layer-badge="soma">soma</span> split. The
				<code>variant</code>
				picks chrome; the header strip auto-renders when <code>title</code>, <code>language</code>,
				or <code>showCopy</code> is present.
			</p>

			<div data-uix-subsection-head>
				<span data-uix-layer-badge="eidos">eidos</span> props · block + header
			</div>
			<div data-uix-controls>
				<label data-uix-control>
					<span data-uix-control-label>variant</span>
					<span data-uix-chips role="radiogroup">
						{#each variants as opt}
							<button data-uix-chip data-active={variant === opt} onclick={() => (variant = opt)}
								>{opt}</button
							>
						{/each}
					</span>
				</label>
				<label data-uix-control>
					<span data-uix-control-label>size</span>
					<span data-uix-chips role="radiogroup">
						<button data-uix-chip data-active={size === ''} onclick={() => (size = '')}
							>inherit</button
						>
						{#each sizes 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>title</span>
					<input type="text" bind:value={title} style="inline-size: 14rem;" />
				</label>
				<label data-uix-control>
					<span data-uix-control-label>language</span>
					<input type="text" bind:value={language} style="inline-size: 10rem;" />
				</label>
				<label data-uix-control>
					<span data-uix-control-label>showCopy</span>
					<span data-uix-switch>
						<input type="checkbox" bind:checked={showCopy} />
						<span data-uix-switch-label>{showCopy ? 'on' : 'off'}</span>
					</span>
				</label>
				<label data-uix-control style="grid-column: span 2;">
					<span data-uix-control-label>content</span>
					<textarea
						bind:value={content}
						rows="4"
						style="inline-size: 100%; font-family: var(--font-family-mono); font-size: var(--font-size-sm);"
					></textarea>
				</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 · variant + header composition</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>
				CodeBlock ships a structural shell with an optional header (title + language badge + copy
				button) and a <code>{`<pre><code>`}</code> body. Composition over visibility: omit
				<code>title</code> + <code>language</code> + set <code>showCopy=false</code> to drop the
				header entirely.
			</p>

			<div data-uix-subsection-head>Props</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">title</td><td class="type">string</td><td class="default">—</td><td>Filename / label. Appears in the header.</td></tr>
						<tr><td class="name">language</td><td class="type">string</td><td class="default">—</td><td>Language badge. Stamped as <code>data-language</code> on inner <code>{`<code>`}</code>.</td></tr>
						<tr><td class="name">showCopy</td><td class="type">boolean</td><td class="default">true</td><td>Render the copy-to-clipboard button.</td></tr>
						<tr><td class="name">variant</td><td class="type">'surface' | 'outline' | 'ghost'</td><td class="default">'surface'</td><td>Visual chrome.</td></tr>
						<tr><td class="name">size</td><td class="type">'xxs' | 'xs' | 'sm' | 'md' | 'lg' | 'xl'</td><td class="default">inherit</td><td>Code font size override.</td></tr>
						<tr><td class="name">tagStyle</td><td class="type">string</td><td class="default">—</td><td>Extra inline CSS.</td></tr>
					</tbody>
				</table>
			</div>

			<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;Code&gt;</code> + custom</td><td>Radix has no dedicated multi-line surface — UIX ships the header + copy as built-in.</td></tr>
						<tr><td class="name">chakra-ui</td><td>composed</td><td>Chakra composes Code + Box + IconButton; UIX bundles them.</td></tr>
						<tr><td class="name">mantine</td><td><code>&lt;CodeHighlight&gt;</code></td><td>Mantine ships Shiki integration; UIX reserves <code>data-language</code> for a separate action.</td></tr>
						<tr><td class="name">shadcn/ui</td><td>recipe-only</td><td>shadcn provides Tailwind classes; UIX ships a proper component.</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>{codeBlockMorfo.name}</td></tr>
						<tr><td class="name">kebab</td><td><code>{codeBlockMorfo.kebab}</code></td></tr>
						<tr><td class="name">scope</td><td>{codeBlockMorfo.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);">
				The Provider stamps <code>data-code-block</code> + <code>data-variant</code>. Internal
				header / copy / pre / code leaves are eidos-only attrs (<code>data-code-block-header</code>,
				<code>data-code-block-title</code>, etc.) — the morfo declares only the Provider because
				the inner parts are consumed exclusively by the recipe.
			</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>
				CodeBlock declares no semantic events. The copy button is a utility leaf — clipboard
				write, no semantic transition. By the 2-of-3 rule, a <code>commit-copy</code> event
				would only be consumed by eidos (visual flip) — not enough to justify a morfo extension.
				If a consumer needs sema on copy (e.g. fulfilment of a tutorial step), they compose
				CodeBlock inside a Stepper or Form that owns the verb.
			</p>
		</section>
	{/if}

	{#if tab === 'recipe'}
		<section data-uix-section>
			<h2 data-uix-section-title>Eidos recipe</h2>
			<p data-uix-section-desc>
				Recipe lives in <code>src/uix/eidos/components/code-block/code-block.css</code>. The
				outer shell selector is <code>[data-code-block]</code>; the header / pre / code leaves
				use eidos-only attrs.
			</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-code-block]</code></td><td><span data-uix-tag data-kind="morfo">morfo</span></td><td>Provider marker.</td></tr>
						<tr><td class="name"><code>{`[data-code-block][data-variant='surface'|'outline'|'ghost']`}</code></td><td><span data-uix-tag data-kind="eidos">eidos</span></td><td>Chrome treatment.</td></tr>
						<tr><td class="name"><code>[data-code-block-header]</code></td><td><span data-uix-tag data-kind="eidos">eidos</span></td><td>Title + lang + copy strip.</td></tr>
						<tr><td class="name"><code>[data-code-block-copy]</code></td><td><span data-uix-tag data-kind="eidos">eidos</span></td><td>Copy button with <code>:hover</code> / <code>:focus-visible</code> / <code>[data-copied]</code> states.</td></tr>
						<tr><td class="name"><code>[data-code-block-pre]</code> / <code>[data-code-block-code]</code></td><td><span data-uix-tag data-kind="eidos">eidos</span></td><td>Block body.</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>The block is a generic <code>{`<div>`}</code> wrapping <code>{`<pre><code>`}</code>. AT announce the code content.</td></tr>
						<tr><td class="name">Copy button</td><td><code>aria-label="Copy code to clipboard"</code> in English. Focus ring via <code>:focus-visible</code>.</td></tr>
						<tr><td class="name">Copied feedback</td><td>Button text flips from "Copy" to "Copied" + <code>data-copied</code> color shift. Re-announced by AT because the text content changes.</td></tr>
						<tr><td class="name">Keyboard</td><td>Copy button reachable via Tab. Enter / Space activate. No custom keyboard contract.</td></tr>
					</tbody>
				</table>
			</div>
		</section>
	{/if}
</div>