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

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<script lang="ts">
import {
Breadcrumb,
type BreadcrumbCurrent,
type BreadcrumbSize
} from '$uix/eidos/components/breadcrumb';
import { compileMorfo } from '$uix/morfo';
import { breadcrumbMorfo } from '@/uix/morfo/components/breadcrumb';
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 size = $state<BreadcrumbSize>('md');
let current = $state<BreadcrumbCurrent>('page');
let interactiveEllipsis = $state(false);
let hiddenCrumbsOpen = $state(false);
let ariaLabel = $state('Project location');
const compiled = compileMorfo(breadcrumbMorfo);
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();
});
$effect(() => {
if (!interactiveEllipsis) hiddenCrumbsOpen = false;
});
const somaSnippet = $derived(
[
"<script lang='ts'>",
" import * as Breadcrumb from '$soma/components/breadcrumb';",
'</' + 'script>',
'',
'<Breadcrumb.Provider aria-label="Project location">',
' <Breadcrumb.List>',
' <Breadcrumb.Item><Breadcrumb.Link href="/uix">UIX</Breadcrumb.Link></Breadcrumb.Item>',
' <Breadcrumb.Separator />',
' <Breadcrumb.Item><Breadcrumb.Link href="/uix/components">Components</Breadcrumb.Link></Breadcrumb.Item>',
' <Breadcrumb.Separator />',
interactiveEllipsis
? [
' <Breadcrumb.Item style="position: relative;">',
' <Breadcrumb.Ellipsis',
' interactive',
' aria-expanded={open}',
' onclick={() => (open = !open)}',
' />',
' {#if open}<div role="menu">…hidden crumbs…</div>{/if}',
' </Breadcrumb.Item>'
].join('\n')
: ' <Breadcrumb.Item><Breadcrumb.Ellipsis>...</Breadcrumb.Ellipsis></Breadcrumb.Item>',
' <Breadcrumb.Separator />',
` <Breadcrumb.Item><Breadcrumb.Link current="${current}">Breadcrumb</Breadcrumb.Link></Breadcrumb.Item>`,
' </Breadcrumb.List>',
'</Breadcrumb.Provider>'
]
.filter(Boolean)
.join('\n')
);
const eidosSnippet = $derived(
[
"<script lang='ts'>",
" import { Breadcrumb } from '$uix/eidos/components/breadcrumb';",
'</' + 'script>',
'',
`<Breadcrumb size="${size}" aria-label="Project location">`,
' <Breadcrumb.List>',
' <Breadcrumb.Item><Breadcrumb.Link href="/uix">UIX</Breadcrumb.Link></Breadcrumb.Item>',
' <Breadcrumb.Separator />',
' <Breadcrumb.Item><Breadcrumb.Link href="/uix/components">Components</Breadcrumb.Link></Breadcrumb.Item>',
' <Breadcrumb.Separator />',
interactiveEllipsis
? [
' <Breadcrumb.Item style="position: relative;">',
' <Breadcrumb.Ellipsis',
' interactive',
' aria-expanded={open}',
' onclick={() => (open = !open)}',
' />',
' {#if open}<div role="menu">…hidden crumbs…</div>{/if}',
' </Breadcrumb.Item>'
].join('\n')
: ' <Breadcrumb.Item><Breadcrumb.Ellipsis>...</Breadcrumb.Ellipsis></Breadcrumb.Item>',
' <Breadcrumb.Separator />',
` <Breadcrumb.Item><Breadcrumb.Link current="${current}">Breadcrumb</Breadcrumb.Link></Breadcrumb.Item>`,
' </Breadcrumb.List>',
'</Breadcrumb>'
]
.filter(Boolean)
.join('\n')
);
</script>
<div data-uix-canvas-inner>
<header>
<div data-uix-eyebrow>Navigation · Breadcrumb</div>
<h1 data-uix-page-title>Breadcrumb</h1>
<p data-uix-page-lede>
Landmark trail for page hierarchy. Soma owns the <code>nav</code>, ordered list,
<code>aria-current</code> and decorative separators; Eidos adds sizing and recipe styling.
</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>3</span>
<span data-uix-meta-pill><span data-uix-meta-key>landmark</span>nav</span>
</div>
</header>
<div data-uix-stage>
<div data-uix-stage-area bind:this={stageRef}>
<Breadcrumb {size} aria-label={ariaLabel}>
<Breadcrumb.List>
<Breadcrumb.Item><Breadcrumb.Link href="/uix">UIX</Breadcrumb.Link></Breadcrumb.Item>
<Breadcrumb.Separator />
<Breadcrumb.Item>
<Breadcrumb.Link href="/uix/components">Components</Breadcrumb.Link>
</Breadcrumb.Item>
<Breadcrumb.Separator />
<Breadcrumb.Item style="position: relative;">
<Breadcrumb.Ellipsis
interactive={interactiveEllipsis}
aria-label="Show hidden levels"
aria-expanded={interactiveEllipsis ? hiddenCrumbsOpen : undefined}
onclick={() => {
if (!interactiveEllipsis) return;
hiddenCrumbsOpen = !hiddenCrumbsOpen;
}}
>
...
</Breadcrumb.Ellipsis>
{#if interactiveEllipsis && hiddenCrumbsOpen}
<div
data-uix-menu
role="menu"
aria-label="Hidden breadcrumb levels"
style="position: absolute; z-index: 5; inset-block-start: calc(100% + 0.5rem); inset-inline-start: 0; min-inline-size: 14rem;"
>
<a data-uix-menu-item role="menuitem" href="/uix/eidos">Eidos</a>
<a data-uix-menu-item role="menuitem" href="/uix/eidos/components">Visual layer</a>
<a data-uix-menu-item role="menuitem" href="/uix/eidos/components/navigation">
Navigation
</a>
</div>
{/if}
</Breadcrumb.Item>
<Breadcrumb.Separator />
<Breadcrumb.Item>
<Breadcrumb.Link href="/uix/components/breadcrumb" {current}>
Breadcrumb
</Breadcrumb.Link>
</Breadcrumb.Item>
</Breadcrumb.List>
</Breadcrumb>
</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>current</span>
<span data-uix-stage-trace-event>{current}</span>
<span style="color: var(--uix-text-faint)">·</span>
<span data-uix-stage-trace-key>ellipsis</span>
<span
>{interactiveEllipsis
? hiddenCrumbsOpen
? 'menu open'
: 'interactive'
: 'decorative'}</span
>
<span style="margin-inline-start: auto;">
<span data-uix-stage-trace-key>size</span>
{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 <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 === '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 navigation semantics and current
crumb. <span data-uix-layer-badge="eidos">eidos</span> owns only visual size.
</p>
<div data-uix-subsection-head>
<span data-uix-layer-badge="soma">soma</span> props · semantics
</div>
<div data-uix-controls>
<label data-uix-control>
<span data-uix-control-label>aria-label</span>
<input type="text" bind:value={ariaLabel} />
</label>
<label data-uix-control>
<span data-uix-control-label>current value</span>
<span data-uix-chips role="radiogroup">
{#each ['page', 'step', 'location', 'date', 'time', 'true'] as value}
<button
data-uix-chip
data-active={current === value}
onclick={() => (current = value as BreadcrumbCurrent)}>{value}</button
>
{/each}
</span>
</label>
<label data-uix-control>
<span data-uix-control-label>ellipsis</span>
<span data-uix-switch
><input type="checkbox" bind:checked={interactiveEllipsis} /><span data-uix-switch-label
>{interactiveEllipsis ? 'interactive' : 'decorative'}</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 ['xs', 'sm', 'md', 'lg'] as s}
<button
data-uix-chip
data-active={size === s}
onclick={() => (size = s as BreadcrumbSize)}>{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 · landmark trail</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">size</td><td>eidos</td><td class="default">md</td><td
>sm | md | lg</td
></tr
>
<tr
><td class="name">aria-label</td><td>soma</td><td class="default">translated</td><td
>Landmark label</td
></tr
>
<tr
><td class="name">current</td><td>soma</td><td class="default">page</td><td
>Applied to the current link</td
></tr
>
<tr
><td class="name">interactive</td><td>soma</td><td class="default">false</td><td
>Renders ellipsis as a button</td
></tr
>
<tr
><td class="name">popupType</td><td>soma</td><td class="default">menu</td><td
>Used only for interactive ellipsis</td
></tr
>
</tbody>
</table>
</div>
</section>
{/if}
{#if tab === 'morfo'}
<section data-uix-section>
<h2 data-uix-section-title>Morfo contract</h2>
<p data-uix-section-desc>
Breadcrumb has no perceptual events. The contract is structural: landmark, list, current
link, separators and optional ellipsis.
</p>
<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>
{#each breadcrumbMorfo.parts as rawPart}
{@const partAny = rawPart as unknown as {
kebab: string;
aria?: ReadonlyArray<{
attr: string;
value: { kind: string };
condition?: { when: string; prop?: string };
severity?: string;
}>;
}}
{@const dataAttrs = compiled.contracts.dataAttrsByPart.get(partAny.kebab) ?? []}
{@const ariaAttrs = partAny.aria ?? []}
{#if dataAttrs.length || ariaAttrs.length}
<div data-uix-subsection-head>{partAny.kebab}</div>
<div data-uix-table-wrap>
<table data-uix-table>
<thead><tr><th>Attribute</th><th>Source</th><th>Condition</th></tr></thead>
<tbody>
{#each dataAttrs as attr}
<tr>
<td class="name">{attr.attr}</td>
<td class="type">
{'value' in attr && attr.value
? (attr as { value: { kind: string } }).value.kind
: '—'}
</td>
<td class="default">data</td>
</tr>
{/each}
{#each ariaAttrs as a}
<tr>
<td class="name">{a.attr}</td>
<td class="type">{a.value.kind}</td>
<td class="default">
{a.condition
? `when ${a.condition.when}${a.condition.prop ? ` (${a.condition.prop})` : ''}`
: 'always'}
</td>
</tr>
{/each}
</tbody>
</table>
</div>
{/if}
{/each}
</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>
This morfo declares no semantic events. If the component grows user-triggered perceptual
feedback, the event must be declared in Morfo first and surfaced here.
</p>
<div data-uix-empty-state>No Sema events declared.</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/breadcrumb/breadcrumb.css</code>. The
recipe targets public Morfo markers plus <code>data-size</code>.
</p>
<div data-uix-table-wrap>
<table data-uix-table>
<thead><tr><th>Selector</th><th>Source</th></tr></thead>
<tbody>
<tr
><td class="name">[data-breadcrumb]</td><td
><span data-uix-tag data-kind="soma">morfo</span></td
></tr
>
<tr
><td class="name">[data-breadcrumb-link][data-current]</td><td
><span data-uix-tag data-kind="soma">morfo</span></td
></tr
>
<tr
><td class="name">[data-breadcrumb][data-size]</td><td
><span data-uix-tag data-kind="eidos">eidos</span></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">Landmark</td><td>Root is a labelled <code>nav</code>.</td></tr>
<tr><td class="name">Order</td><td>Crumbs are rendered as an ordered list.</td></tr>
<tr
><td class="name">Current item</td><td
>Current link renders <code>aria-current</code> and drops navigation.</td
></tr
>
<tr
><td class="name">Separators</td><td
>Decorative separators are hidden from assistive tech.</td
></tr
>
</tbody>
</table>
</div>
</section>
{/if}
</div>

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