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<script lang="ts">
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import {
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Skeleton,
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type SkeletonShape,
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type SkeletonSize,
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type SkeletonColor
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} from '$uix/eidos/components/skeleton';
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import { Box } from '$uix/eidos/components/box';
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import { compileMorfo } from '$uix/morfo';
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import { skeletonMorfo } from '@/uix/morfo/components/skeleton';
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import { getActiveUix } from '$active-uix';
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type Tab = 'live' | 'api' | 'morfo' | 'sema' | 'recipe' | 'a11y';
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type TraceEntry = { event: string; family: string; intent?: string; at: number };
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const uix = getActiveUix();
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let tab = $state<Tab>('live');
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let trace = $state<TraceEntry[]>([]);
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let stageRef = $state<HTMLElement | null>(null);
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let shape = $state<SkeletonShape>('rect');
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let size = $state<SkeletonSize>('md');
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let color = $state<SkeletonColor>('neutral');
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let animated = $state(true);
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let lines = $state(3);
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let width = $state<string>('100%');
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let height = $state<string>('40px');
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const compiled = compileMorfo(skeletonMorfo);
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const partsList = $derived([...compiled.parts.byKebab.values()]);
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const events = $derived([...compiled.actions.byName.values()]);
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const shapes: SkeletonShape[] = ['rect', 'circle', 'text'];
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const sizes: SkeletonSize[] = ['xs', 'sm', 'md', 'lg', 'xl'];
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const colors: SkeletonColor[] = [
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'primary',
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'secondary',
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'neutral',
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'affirm',
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'fulfill',
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'risk',
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'threat',
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'loss'
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];
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$effect(() => {
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const el = stageRef;
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if (!el) return;
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const obs = new MutationObserver((mutations) => {
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for (const m of mutations) {
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if (m.attributeName !== 'data-event') continue;
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const target = m.target as Element;
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const ev = target.getAttribute('data-event');
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if (!ev) continue;
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trace = [
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{
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event: ev,
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family: target.getAttribute('data-event-family') ?? '—',
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intent: target.getAttribute('data-event-intent') ?? undefined,
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at: Date.now()
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},
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...trace
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].slice(0, 6);
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}
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});
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obs.observe(el, { attributes: true, subtree: true, attributeFilter: ['data-event'] });
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return () => obs.disconnect();
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});
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const eidosSnippet = $derived(
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[
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"<script lang='ts'>",
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" import { Skeleton } from '$uix/eidos/components/skeleton';",
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'</' + 'script>',
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'',
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'<Skeleton',
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shape !== 'rect' && ` shape="${shape}"`,
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size !== 'md' && ` size="${size}"`,
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color !== 'neutral' && ` color="${color}"`,
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!animated && ' animated={false}',
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shape === 'text' && lines !== 1 && ` lines={${lines}}`,
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shape === 'rect' && width !== '100%' && ` width="${width}"`,
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shape === 'rect' && height !== '40px' && ` height="${height}"`,
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'/>'
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]
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.filter(Boolean)
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.join('\n')
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);
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</script>
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<div data-uix-canvas-inner>
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<header>
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<div data-uix-eyebrow>Feedback · Skeleton</div>
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<h1 data-uix-page-title>Skeleton</h1>
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<p data-uix-page-lede>
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Content placeholder shown while data loads. Three shapes
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(<code>rect</code>, <code>circle</code>, <code>text</code>), five sizes, eight color
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accents, and an optional shimmer animation. Eidos-native: no semantic events, no soma
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split — the morfo declares one Provider part with <code>role="status"</code> and
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<code>aria-busy="true"</code>.
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</p>
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<div data-uix-page-meta>
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<span data-uix-meta-pill>
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<span data-uix-meta-key>parts</span>{compiled.parts.order.length}
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</span>
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<span data-uix-meta-pill>
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<span data-uix-meta-key>events</span>0
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</span>
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<span data-uix-meta-pill>
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<span data-uix-meta-key>shapes</span>{shapes.length}
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</span>
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<span data-uix-meta-pill>
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<span data-uix-meta-key>sizes</span>{sizes.length}
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</span>
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<span data-uix-meta-pill>
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<span data-uix-meta-key>scope</span>eidos
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</span>
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</div>
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</header>
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<!-- Live preview always rendered (between header and tabs). -->
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<div data-uix-stage>
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<div data-uix-stage-area bind:this={stageRef}>
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<Box
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style="padding: var(--uix-space-4); display: flex; justify-content: center; inline-size: 100%;"
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>
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<Box style="inline-size: min(28rem, 100%);">
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{#if shape === 'rect'}
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<Skeleton {shape} {size} {color} {animated} {width} {height} />
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{:else if shape === 'circle'}
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<Skeleton {shape} {size} {color} {animated} />
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{:else}
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<Skeleton {shape} {size} {color} {animated} {lines} />
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{/if}
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</Box>
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</Box>
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</div>
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<div data-uix-stage-trace>
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<span data-uix-stage-trace-key>trace</span>
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<span>{trace.length === 0 ? 'no semantic events' : `${trace.length} event(s)`}</span>
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<span style="color: var(--uix-text-faint)">·</span>
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<span data-uix-stage-trace-key>shape</span>
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<span>{shape}</span>
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<span style="margin-inline-start: auto;">
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<span data-uix-stage-trace-key>size</span>
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{size} · <span data-uix-stage-trace-key>color</span> {color}
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</span>
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</div>
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</div>
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<div data-uix-tabs role="tablist">
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<button data-uix-tab data-active={tab === 'live'} onclick={() => (tab = 'live')}>Live</button>
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<button data-uix-tab data-active={tab === 'api'} onclick={() => (tab = 'api')}>
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API <span data-uix-tab-count>7</span>
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</button>
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<button data-uix-tab data-active={tab === 'morfo'} onclick={() => (tab = 'morfo')}>
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<span data-uix-layer-badge="morfo">morfo</span>
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<span data-uix-tab-count>{partsList.length}p · 0e</span>
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</button>
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<button data-uix-tab data-active={tab === 'sema'} onclick={() => (tab = 'sema')}>
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<span data-uix-layer-badge="sema">sema</span>
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<span data-uix-tab-count>{events.length}</span>
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</button>
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<button data-uix-tab data-active={tab === 'recipe'} onclick={() => (tab = 'recipe')}>Recipe</button
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>
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<button data-uix-tab data-active={tab === 'a11y'} onclick={() => (tab = 'a11y')}>A11y</button>
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</div>
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{#if tab === 'live'}
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<section data-uix-section>
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<h2 data-uix-section-title>Controls</h2>
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<p data-uix-section-desc>
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Skeleton is eidos-native — no <span data-uix-layer-badge="soma">soma</span> split. The
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<code>shape</code> prop drives the recipe geometry; <code>size</code> sets intrinsic
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block-size; <code>color</code> tints the placeholder background.
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</p>
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<div data-uix-subsection-head>
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<span data-uix-layer-badge="eidos">eidos</span> props · visual treatment
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</div>
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<div data-uix-controls>
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<label data-uix-control>
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<span data-uix-control-label>shape</span>
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<span data-uix-chips role="radiogroup">
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{#each shapes as s (s)}
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<button data-uix-chip data-active={shape === s} onclick={() => (shape = s)}>{s}</button
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>
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{/each}
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</span>
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</label>
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<label data-uix-control>
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<span data-uix-control-label>size</span>
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<span data-uix-chips role="radiogroup">
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{#each sizes as s (s)}
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<button data-uix-chip data-active={size === s} onclick={() => (size = s)}>{s}</button>
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{/each}
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</span>
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</label>
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<label data-uix-control>
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<span data-uix-control-label>color</span>
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<span data-uix-chips role="radiogroup">
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{#each colors as c (c)}
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<button data-uix-chip data-active={color === c} onclick={() => (color = c)}>{c}</button
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>
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{/each}
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</span>
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</label>
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<label data-uix-control>
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<span data-uix-control-label>animated</span>
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<span data-uix-switch>
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<input type="checkbox" bind:checked={animated} />
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<span data-uix-switch-label>{animated ? 'on' : 'off'}</span>
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</span>
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</label>
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{#if shape === 'rect'}
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<label data-uix-control>
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<span data-uix-control-label>width</span>
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<input type="text" bind:value={width} />
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</label>
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<label data-uix-control>
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<span data-uix-control-label>height</span>
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<input type="text" bind:value={height} />
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</label>
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{/if}
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{#if shape === 'text'}
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<label data-uix-control>
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<span data-uix-control-label>lines</span>
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<input type="number" min="1" max="10" bind:value={lines} />
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</label>
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{/if}
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</div>
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<!-- ── Code snippet (eidos-native — no soma layer) ──────────────── -->
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<div data-uix-code>
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<div data-uix-code-head>
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<span data-uix-layer-badge="eidos">eidos</span>
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<span>visual · shape + size drive recipe geometry</span>
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<span data-uix-code-lang>svelte</span>
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</div>
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<pre><code>{eidosSnippet}</code></pre>
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</div>
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</section>
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{/if}
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{#if tab === 'api'}
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<section data-uix-section>
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<h2 data-uix-section-title>API reference</h2>
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<p data-uix-section-desc>
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Skeleton accepts shape / size / color / lines / animated and inherits the full Box prop
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surface (width, height, padding, gridColumn, …) so it composes inside any layout.
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</p>
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<div data-uix-subsection-head>Skeleton-specific props</div>
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<div data-uix-table-wrap>
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<table data-uix-table>
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<thead><tr><th>Prop</th><th>Type</th><th>Notes</th></tr></thead>
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<tbody>
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<tr>
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<td class="name">shape</td>
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<td class="type">'rect' | 'circle' | 'text'</td>
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<td>
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<code>rect</code> (default) → rounded rectangle. <code>circle</code> → 1:1 ratio,
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fully rounded. <code>text</code> → stacked thin bars at staggered widths.
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</td>
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</tr>
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<tr>
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<td class="name">size</td>
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<td class="type">'xs' | 'sm' | 'md' | 'lg' | 'xl'</td>
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<td>Intrinsic block-size when no <code>height</code> is set. Default <code>md</code>.</td>
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</tr>
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<tr>
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<td class="name">color</td>
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<td class="type">ColorRole</td>
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<td>
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Placeholder tint. <code>neutral</code> (default) for content-agnostic
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placeholders; intent colors for failure states.
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</td>
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</tr>
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<tr>
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<td class="name">lines</td>
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<td class="type">number</td>
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<td>
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Bar count when <code>shape='text'</code>. Each bar's width staggers so the block
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reads as a paragraph. Default <code>1</code>.
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</td>
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</tr>
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<tr>
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<td class="name">animated</td>
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<td class="type">boolean</td>
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<td>
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Shimmer wave via CSS background-position keyframes. Frozen under
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<code>prefers-reduced-motion: reduce</code>. Default <code>true</code>.
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</td>
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</tr>
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<tr>
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<td class="name">aria-label</td>
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<td class="type">string?</td>
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<td>Override the translated 'Loading' default — useful for context-specific messages.</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div data-uix-subsection-head>Inherited from Box</div>
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<div data-uix-table-wrap>
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<table data-uix-table>
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<thead><tr><th>Prop</th><th>Type</th><th>Notes</th></tr></thead>
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<tbody>
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<tr>
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<td class="name">width / height</td>
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<td class="type">number | string</td>
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<td>Override intrinsic size — pass any CSS length.</td>
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</tr>
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<tr>
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<td class="name">padding / margin (and per-side)</td>
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<td class="type">number | string</td>
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<td>Numbers map to <code>var(--space-N)</code>.</td>
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</tr>
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<tr>
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<td class="name">gridColumn / gridRow / placeSelf</td>
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<td class="type">string</td>
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<td>Use Skeleton as a grid item — placement props live on Box.</td>
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</tr>
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<tr>
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<td class="name">…</td>
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<td class="type">BoxProps</td>
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<td>See <a href="/uix/components/box"><Box></a> for the full surface.</td>
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</tr>
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</tbody>
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</table>
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</div>
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<div data-uix-subsection-head>Reference comparison</div>
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<div data-uix-table-wrap>
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<table data-uix-table>
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<thead><tr><th>Library</th><th>Closest equivalent</th><th>Difference</th></tr></thead>
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<tbody>
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<tr>
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<td class="name">shadcn/ui</td>
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<td><code><Skeleton></code></td>
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<td>shadcn ships a single rectangular class. UIX adds shape variants + the text-paragraph composition out of the box.</td>
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</tr>
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<tr>
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<td class="name">chakra-ui</td>
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<td><code><Skeleton></code> + <code><SkeletonText></code></td>
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<td>Chakra splits into two components. UIX folds both into one with <code>shape='text'</code>.</td>
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</tr>
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<tr>
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<td class="name">mantine</td>
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<td><code><Skeleton></code> + <code><SkeletonText></code></td>
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<td>Same split as Chakra; UIX collapses to one component with <code>lines</code> for paragraphs.</td>
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</tr>
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<tr>
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<td class="name">radix-themes</td>
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<td><code><Skeleton></code></td>
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<td>Radix uses an inert `data-skeleton` over arbitrary children. UIX exposes structured shape variants.</td>
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</tr>
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</tbody>
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</table>
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</div>
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</section>
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{/if}
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{#if tab === 'morfo'}
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<section data-uix-section>
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<h2 data-uix-section-title>Morfo contract</h2>
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<div data-uix-table-wrap>
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<table data-uix-table>
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<thead><tr><th>Field</th><th>Value</th></tr></thead>
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<tbody>
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<tr><td class="name">name</td><td>{skeletonMorfo.name}</td></tr>
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<tr><td class="name">kebab</td><td><code>{skeletonMorfo.kebab}</code></td></tr>
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<tr><td class="name">scope</td><td>{skeletonMorfo.scope.join(', ')}</td></tr>
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<tr><td class="name">parts</td><td>{partsList.length}</td></tr>
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<tr><td class="name">events</td><td>0</td></tr>
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</tbody>
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</table>
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</div>
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<div data-uix-subsection-head>Parts</div>
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<div data-uix-table-wrap>
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<table data-uix-table>
|
|
|
<thead>
|
|
|
<tr>
|
|
|
<th>kebab</th>
|
|
|
<th>marker</th>
|
|
|
<th>element</th>
|
|
|
<th>archetype</th>
|
|
|
<th>role</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"><{part.defaultElement}></td>
|
|
|
<td class="type">{part.archetype ?? '—'}</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>Provider · data attrs</div>
|
|
|
<div data-uix-table-wrap>
|
|
|
<table data-uix-table>
|
|
|
<thead><tr><th>attr</th><th>values</th><th>source</th></tr></thead>
|
|
|
<tbody>
|
|
|
<tr>
|
|
|
<td class="name"><code>data-shape</code></td>
|
|
|
<td>rect | circle | text</td>
|
|
|
<td class="type">propRef('shape')</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>data-animated</code></td>
|
|
|
<td>'' (when on)</td>
|
|
|
<td class="type">propRef('animated')</td>
|
|
|
</tr>
|
|
|
</tbody>
|
|
|
</table>
|
|
|
</div>
|
|
|
|
|
|
<div data-uix-subsection-head>Provider · aria</div>
|
|
|
<div data-uix-table-wrap>
|
|
|
<table data-uix-table>
|
|
|
<thead><tr><th>attr</th><th>value</th><th>severity</th></tr></thead>
|
|
|
<tbody>
|
|
|
<tr>
|
|
|
<td class="name"><code>role</code></td>
|
|
|
<td>status</td>
|
|
|
<td class="type">part default</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>aria-label</code></td>
|
|
|
<td>translationRef('components.skeleton.label')</td>
|
|
|
<td class="type">recommended</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>aria-busy</code></td>
|
|
|
<td>"true"</td>
|
|
|
<td class="type">literal</td>
|
|
|
</tr>
|
|
|
</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
|
|
|
</h2>
|
|
|
<p data-uix-section-desc>
|
|
|
Skeleton declares <strong>no semantic events</strong>. It is a passive visual placeholder
|
|
|
the consumer unmounts when real content is ready — there is no commit/emerge/shift to
|
|
|
react to. Screen readers learn about its presence through the morfo's
|
|
|
<code>role="status"</code> + <code>aria-busy="true"</code> contract, not through sema.
|
|
|
</p>
|
|
|
<p data-uix-section-desc>
|
|
|
If you need a perceptual cue when loading <em>starts</em> or <em>completes</em>, attach
|
|
|
the cue to the parent action (commit-submit on the form that triggered the fetch, or
|
|
|
commit-set on the slot that received the data) — not to Skeleton.
|
|
|
</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/skeleton/skeleton.css</code>. Tokens are
|
|
|
private (<code>--_skeleton-*</code>). The shimmer is a single keyframes block reused by
|
|
|
rect/circle/text variants.
|
|
|
</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-skeleton]</code></td>
|
|
|
<td><span data-uix-tag data-kind="morfo">morfo</span></td>
|
|
|
<td>Provider marker. Emitted by the component on the root div.</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>[data-skeleton][data-shape='rect'|'circle'|'text']</code></td>
|
|
|
<td><span data-uix-tag data-kind="eidos">eidos</span></td>
|
|
|
<td>Toggles border-radius + intrinsic aspect-ratio + layout.</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>[data-skeleton][data-size='xs'..'xl']</code></td>
|
|
|
<td><span data-uix-tag data-kind="eidos">eidos</span></td>
|
|
|
<td>Sets <code>--_skeleton-size</code>. Default <code>md = 1rem</code>.</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>[data-skeleton][data-color='primary'..'loss']</code></td>
|
|
|
<td><span data-uix-tag data-kind="eidos">eidos</span></td>
|
|
|
<td>Color-mixes accent tracks into <code>--_skeleton-bg</code>.</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>[data-skeleton][data-animated]</code></td>
|
|
|
<td><span data-uix-tag data-kind="eidos">eidos</span></td>
|
|
|
<td>Adds the linear-gradient + <code>skeleton-shimmer</code> keyframes.</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>[data-skeleton-line]</code></td>
|
|
|
<td><span data-uix-tag data-kind="eidos">eidos</span></td>
|
|
|
<td>One bar inside <code>shape='text'</code>. Stacks via flex column.</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name"><code>@media (prefers-reduced-motion: reduce)</code></td>
|
|
|
<td><span data-uix-tag data-kind="eidos">eidos</span></td>
|
|
|
<td>Stops the shimmer; placeholder shape stays visible.</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>
|
|
|
<code>role="status"</code> — a polite live region. Screen readers announce the
|
|
|
element's label when it enters the DOM and stay silent otherwise.
|
|
|
</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name">Busy state</td>
|
|
|
<td>
|
|
|
<code>aria-busy="true"</code> — signals that the region's content is loading and
|
|
|
the user should expect a change soon.
|
|
|
</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name">Label</td>
|
|
|
<td>
|
|
|
Defaults to the translated 'Loading' / 'Cargando'. Override with
|
|
|
<code>aria-label="Loading user profile"</code> when you can give specific
|
|
|
context.
|
|
|
</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name">Keyboard</td>
|
|
|
<td>Skeleton is not focusable. Tab order skips it entirely.</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name">Focus visible</td>
|
|
|
<td>Skeleton does not paint a focus ring — no interactive state.</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name">Reduced motion</td>
|
|
|
<td>
|
|
|
Shimmer animation freezes under
|
|
|
<code>prefers-reduced-motion: reduce</code>. The placeholder shape stays visible
|
|
|
to preserve the loading affordance.
|
|
|
</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name">Color contrast</td>
|
|
|
<td>
|
|
|
<code>color-mix</code> at 50–60% opacity over the surface — low enough to read
|
|
|
as "non-content" but high enough to register against most backgrounds.
|
|
|
</td>
|
|
|
</tr>
|
|
|
<tr>
|
|
|
<td class="name">Replacement</td>
|
|
|
<td>
|
|
|
When swapped with real content, the skeleton element is removed entirely (not
|
|
|
just hidden). Screen readers then announce the new content via its own ARIA.
|
|
|
</td>
|
|
|
</tr>
|
|
|
</tbody>
|
|
|
</table>
|
|
|
</div>
|
|
|
</section>
|
|
|
{/if}
|
|
|
</div>
|
