svelte-kit-vice/src/uix/morfo/components/tabs.ts

import type { Morfo } from '../types';
import { v } from '../types';

export const tabsMorfo = {
	name: 'Tabs',
	kebab: 'tabs',
	scope: ['soma', 'sema', 'eidos'],
	apg: 'https://www.w3.org/WAI/ARIA/apg/patterns/tabs/',
	events: [
		{
			name: 'select',
			semantic: {
				family: 'commit',
				verb: 'select',
				target: v.partRef('trigger'),
				intent: 'neutral',
				sequence: 'pre'
			}
		}
	],
	parts: [
		{
			name: 'Provider',
			kebab: 'provider',
			archetype: 'provider',
			kind: 'public',
			defaultElement: 'div',
			optional: false,
			data: [
				{
					attr: 'data-orientation',
					values: ['horizontal', 'vertical'],
					value: v.propRef('orientation')
				},
				{ attr: 'data-disabled', value: v.propRef('disabled'), severity: 'optional' }
			],
			aria: []
		},
		{
			name: 'List',
			kebab: 'list',
			archetype: 'group',
			kind: 'public',
			defaultElement: 'div',
			role: 'tablist',
			optional: false,
			data: [
				{
					attr: 'data-orientation',
					values: ['horizontal', 'vertical'],
					value: v.propRef('orientation')
				}
			],
			aria: [{ attr: 'aria-orientation', value: v.propRef('orientation') }]
		},
		{
			name: 'Trigger',
			kebab: 'trigger',
			archetype: 'trigger',
			kind: 'public',
			defaultElement: 'button',
			role: 'tab',
			optional: false,
			states: ['active', 'inactive'],
			data: [
				{ attr: 'data-state', values: ['active', 'inactive'], value: v.stateRef('active') },
				{ attr: 'data-value' },
				{ attr: 'data-disabled', value: v.propRef('disabled'), severity: 'optional' },
				{
					attr: 'data-orientation',
					values: ['horizontal', 'vertical'],
					value: v.propRef('orientation')
				}
			],
			aria: [
				{ attr: 'type', value: v.literal('button') },
				{ attr: 'aria-selected', value: v.stateRef('active') },
				{
					attr: 'aria-controls',
					value: v.partRef('content'),
					condition: { when: 'part-present', part: 'content' },
					severity: 'recommended'
				}
			],
			keyboard: [
				{ key: 'ArrowRight', action: 'next-item' },
				{ key: 'ArrowLeft', action: 'prev-item' },
				{ key: 'ArrowDown', action: 'next-item' },
				{ key: 'ArrowUp', action: 'prev-item' },
				{ key: 'Home', action: 'first-item' },
				{ key: 'End', action: 'last-item' },
				{ key: 'Enter', action: 'activate' },
				{ key: ' ', action: 'activate' }
			]
		},
		{
			name: 'Content',
			kebab: 'content',
			archetype: 'content',
			kind: 'public',
			defaultElement: 'div',
			role: 'tabpanel',
			optional: false,
			states: ['active', 'inactive'],
			data: [
				{ attr: 'data-state', values: ['active', 'inactive'], value: v.stateRef('active') },
				{
					attr: 'data-orientation',
					values: ['horizontal', 'vertical'],
					value: v.propRef('orientation')
				}
			],
			aria: [
				{
					attr: 'aria-labelledby',
					value: v.partRef('trigger'),
					condition: { when: 'part-present', part: 'trigger' },
					severity: 'recommended'
				},
				{
					// Emitted when inactive so inactive panels are also hidden
					// from AT. Optional because the active panel omits it.
					attr: 'aria-hidden',
					value: v.mapRef(v.stateRef('active'), { false: 'true' }),
					severity: 'optional'
				}
			]
		},
		{
			// Animated indicator that slides between active triggers. Optional;
			// renders as an absolutely-positioned element parented to the List.
			// Soma exposes the active trigger's bounding rect on the provider so
			// the indicator can compute its transform / size.
			name: 'Indicator',
			kebab: 'indicator',
			archetype: 'indicator',
			kind: 'public',
			defaultElement: 'div',
			optional: true,
			data: [
				{
					attr: 'data-orientation',
					values: ['horizontal', 'vertical'],
					value: v.propRef('orientation')
				}
			],
			aria: [{ attr: 'aria-hidden', value: v.literal('true') }]
		}
	]
} as const satisfies Morfo;