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

<script lang="ts">
	import { Knob, type KnobSize } from '$uix/eidos/components/knob';
	import { compileMorfo } from '$uix/morfo';
	import { knobMorfo } from '@/uix/morfo/components/knob';
	import { getActiveUix } from '$active-uix';

	type Tab = 'live' | 'api' | 'morfo' | 'sema' | 'recipe' | 'a11y';
	type Intent = 'neutral' | 'affirm' | 'risk' | 'threat';
	type TraceEntry = { event: string; family: string; intent?: string; at: number };

	const uix = getActiveUix();

	let tab = $state<Tab>('live');
	let value = $state(40);
	let min = $state(0);
	let max = $state(100);
	let step = $state(1);
	let largeStep = $state(10);
	let startAngle = $state(-135);
	let endAngle = $state(135);
	let disabled = $state(false);
	let readonly = $state(false);
	let invalid = $state(false);
	let intent = $state<Intent>('neutral');
	let size = $state<KnobSize>('md');
	let showNeedle = $state(true);

	const compiled = compileMorfo(knobMorfo);
	const partsList = $derived([...compiled.parts.byKebab.values()]);
	const events = $derived([...compiled.actions.byName.values()]);
	const controlKeyboard = $derived(knobMorfo.parts[1].keyboard ?? []);
	let stageRef = $state<HTMLElement | null>(null);
	let trace = $state<TraceEntry[]>([]);

	$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();
	});

	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 = $derived(
		[
			"<script lang='ts'>",
			"  import * as Knob from '$soma/components/knob';",
			`  let value = $state(${value});`,
			'</' + 'script>',
			'',
			`<Knob.Provider bind:value min={${min}} max={${max}} aria-label="Gain">`,
			'  <Knob.Control>',
			'    <Knob.Indicator />',
			'  </Knob.Control>',
			'  <Knob.ValueText />',
			'</Knob.Provider>'
		].join('\n')
	);

	const eidosSnippet = $derived(
		[
			"<script lang='ts'>",
			"  import { Knob } from '$uix/eidos/components/knob';",
			`  let value = $state(${value});`,
			'</' + 'script>',
			'',
			`<Knob bind:value min={${min}} max={${max}} size="${size}" aria-label="Gain">`,
			'  <Knob.Control>',
			'    <Knob.Indicator />',
			'  </Knob.Control>',
			'  <Knob.ValueText />',
			'</Knob>'
		].join('\n')
	);
</script>

<div data-uix-canvas-inner>
	<header>
		<div data-uix-eyebrow>Controls · Knob</div>
		<h1 data-uix-page-title>Knob</h1>
		<p data-uix-page-lede>
			Rotary value control (WAI-ARIA slider pattern, radial rendering). Soma owns the radial gesture
			(via <code>Gesture.rotate</code>), keyboard, value and ARIA; Eidos adds visual size.
		</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>keyboard</span>{controlKeyboard.length}</span>
			<span data-uix-meta-pill><span data-uix-meta-key>gesture</span>rotate</span>
		</div>
	</header>

	<div data-uix-stage bind:this={stageRef}>
		<div data-uix-stage-area>
			<Knob
				bind:value
				{min}
				{max}
				{step}
				{largeStep}
				{startAngle}
				{endAngle}
				{disabled}
				{readonly}
				{invalid}
				{intent}
				{size}
				aria-label="Gain"
			>
				<Knob.Control>
					{#if showNeedle}
						<Knob.Indicator />
					{/if}
					<Knob.ValueText>{value}</Knob.ValueText>
				</Knob.Control>
			</Knob>
		</div>
		<div data-uix-stage-trace>
			<span data-uix-stage-trace-key>trace</span>
			{#if trace.length === 0}
				<span>drag the dial or step with the keyboard to see sema events</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} · {size}
			</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</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 === '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>
				<span data-uix-layer-badge="soma">soma</span> owns the radial gesture + value model.
				<span data-uix-layer-badge="eidos">eidos</span> owns size.
			</p>
			<div data-uix-subsection-head>
				<span data-uix-layer-badge="soma">soma</span> props · value model
			</div>
			<div data-uix-controls>
				<label data-uix-control>
					<span data-uix-control-label>value <span data-uix-control-hint>{value}</span></span>
					<input type="range" {min} {max} {step} bind:value />
				</label>
				<label data-uix-control
					><span data-uix-control-label>min</span><input type="number" bind:value={min} /></label
				>
				<label data-uix-control
					><span data-uix-control-label>max</span><input type="number" bind:value={max} /></label
				>
				<label data-uix-control
					><span data-uix-control-label>step</span><input
						type="number"
						min="1"
						bind:value={step}
					/></label
				>
				<label data-uix-control
					><span data-uix-control-label>largeStep</span><input
						type="number"
						min="1"
						bind:value={largeStep}
					/></label
				>
				<label data-uix-control
					><span data-uix-control-label>startAngle</span><input
						type="number"
						bind:value={startAngle}
					/></label
				>
				<label data-uix-control
					><span data-uix-control-label>endAngle</span><input
						type="number"
						bind:value={endAngle}
					/></label
				>
				<label data-uix-control>
					<span data-uix-control-label>intent</span>
					<span data-uix-chips role="radiogroup">
						{#each ['neutral', 'affirm', 'risk', 'threat'] as i}
							<button data-uix-chip data-active={intent === i} onclick={() => (intent = i as Intent)}
								>{i}</button
							>
						{/each}
					</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>readonly</span>
					<span data-uix-switch
						><input type="checkbox" bind:checked={readonly} /><span data-uix-switch-label
							>{readonly ? '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>
				<label data-uix-control>
					<span data-uix-control-label>needle</span>
					<span data-uix-switch
						><input type="checkbox" bind:checked={showNeedle} /><span data-uix-switch-label
							>{showNeedle ? 'on' : 'off'}</span
						></span
					>
				</label>
			</div>

			<div data-uix-subsection-head>
				<span data-uix-layer-badge="eidos">eidos</span> props · visual treatment
			</div>
			<div data-uix-controls>
				<label data-uix-control>
					<span data-uix-control-label>size</span>
					<span data-uix-chips role="radiogroup">
						{#each ['sm', 'md', 'lg', 'xl'] as s}
							<button data-uix-chip data-active={size === s} onclick={() => (size = s as KnobSize)}
								>{s}</button
							>
						{/each}
					</span>
				</label>
			</div>

			<div data-uix-code>
				<div data-uix-code-head>
					<span data-uix-layer-badge="soma">soma</span>
					<span>headless · knob model</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 · adds size</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 surface</h2>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Prop</th><th>Owner</th><th>Default</th><th>Notes</th></tr></thead>
					<tbody>
						<tr><td class="name">value</td><td>soma</td><td class="default">min</td><td>Bindable number</td></tr>
						<tr><td class="name">min / max / step</td><td>soma</td><td class="default">0 / 100 / 1</td><td>Range + snapping grid</td></tr>
						<tr><td class="name">largeStep</td><td>soma</td><td class="default">10</td><td>PageUp / PageDown</td></tr>
						<tr><td class="name">defaultValue</td><td>soma</td><td class="default">min</td><td>Double-click reset target</td></tr>
						<tr><td class="name">startAngle / endAngle</td><td>soma</td><td class="default">-135 / 135</td><td>Sweep (deg, 0 = up, clockwise)</td></tr>
						<tr><td class="name">readonly / invalid</td><td>soma</td><td class="default">false</td><td>Focusable-not-editable / aria-invalid</td></tr>
						<tr><td class="name">intent</td><td>soma</td><td class="default">neutral</td><td>Evaluative load of commits</td></tr>
						<tr><td class="name">formatValue</td><td>soma</td><td class="default">—</td><td>Custom aria-valuetext formatter</td></tr>
						<tr><td class="name">size</td><td>eidos</td><td class="default">md</td><td>sm | md | lg | xl</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>Part</th><th>Marker</th><th>Element</th><th>Role</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.role ?? '—'}</td>
								<td class="default">{part.optional ? 'yes' : 'no'}</td>
							</tr>
						{/each}
					</tbody>
				</table>
			</div>
			<div data-uix-subsection-head>Keyboard <span data-uix-control-hint>(on Control)</span></div>
			<div data-uix-table-wrap>
				<table data-uix-table>
					<thead><tr><th>Key</th><th>Action</th></tr></thead>
					<tbody>
						{#each controlKeyboard as key}
							<tr><td class="name">{key.key}</td><td>{key.action}</td></tr>
						{/each}
					</tbody>
				</table>
			</div>
		</section>
	{/if}

	{#if tab === 'sema'}
		<section data-uix-section>
			<h2 data-uix-section-title>
				<span data-uix-layer-badge="sema">sema</span> · events + perceptual signature
			</h2>
			<p data-uix-section-desc>
				Continuous-shape component: the gesture is modeled as start / commit boundaries
				(<code>handle-pick</code> · <code>handle-drop</code> · <code>commit-set</code> ·
				<code>commit-reset</code>), never per-frame emissions.
			</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>Target</th><th>Play</th></tr></thead>
					<tbody>
						{#each events as action}
							<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>{action.target}</td>
								<td>
									<button
										data-uix-play
										onclick={() => {
											const target = stageRef?.querySelector(
												'[data-knob-control]'
											) as HTMLElement | null;
											if (!target) return;
											void uix.events?.emit({
												name: action.name,
												family: action.semantic.family,
												target
											});
										}}>▶ 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 live in <code>src/uix/eidos/components/knob/knob.css</code> and consume Soma
				attrs plus the provider-published <code>--knob-progress</code> / <code>--knob-angle</code>
				custom properties.
			</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-knob]</code></td>
							<td><span data-uix-tag data-kind="morfo">morfo</span></td>
							<td>Root container (flex column, gap).</td>
						</tr>
						<tr>
							<td class="name"><code>[data-knob-control]</code></td>
							<td><span data-uix-tag data-kind="morfo">morfo</span></td>
							<td>The dial: value arc via conic-gradient from <code>--knob-progress</code>.</td>
						</tr>
						<tr>
							<td class="name"><code>[data-knob-indicator]</code></td>
							<td><span data-uix-tag data-kind="morfo">morfo</span></td>
							<td>Pointer rotated by <code>--knob-angle</code>.</td>
						</tr>
						<tr>
							<td class="name"><code>[data-knob][data-dragging]</code></td>
							<td><span data-uix-tag data-kind="morfo">morfo</span></td>
							<td>Grabbing cursor + raised shadow during the gesture.</td>
						</tr>
						<tr>
							<td class="name"><code>[data-knob][data-intent='risk']</code></td>
							<td><span data-uix-tag data-kind="morfo">morfo</span></td>
							<td>Persistent evaluative tint of the value arc.</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>Control uses <code>role="slider"</code> with a rotary roledescription.</td></tr>
						<tr><td class="name">Value</td><td>Exposes min, max, now and a locale-formatted valuetext.</td></tr>
						<tr><td class="name">Label</td><td><code>aria-labelledby</code> when a Label part exists, else <code>aria-label</code> (via the <code>part-absent</code> condition).</td></tr>
						<tr><td class="name">Keyboard</td><td>Arrows step, PageUp/PageDown large-step, Home/End jump to bounds; double-click resets.</td></tr>
					</tbody>
				</table>
			</div>
		</section>
	{/if}
</div>