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24 lines
1.0 KiB
Plaintext
24 lines
1.0 KiB
Plaintext
---
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// Signal (.signal): a row of stepped bars showing a level — priority, strength, coverage.
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interface Props {
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/** number of lit bars (`.signal-bar.active`) */
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value?: number
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/** total number of bars; core/scss/ui/_signal.scss styles up to $signal-max-bars (5) */
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max?: number
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/** core/scss/ui/_signal.scss `.signal-{color}` */
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color?: string | undefined
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/** accessible name; without it the signal is hidden from assistive technology */
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ariaLabel?: string
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class?: string
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/** remaining attributes (id, data-*, …) are forwarded to the root element */
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[key: string]: unknown
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}
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const { value = 0, max = 3, color, ariaLabel, class: className, ...rest } = Astro.props
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const bars = Array.from({ length: max }, (_, index) => index < value)
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---
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<span class:list={['signal', color && `signal-${color}`, className]} role={ariaLabel ? 'img' : undefined} aria-label={ariaLabel} aria-hidden={ariaLabel ? undefined : 'true'} {...rest}>{bars.map((active) => <span class:list={['signal-bar', active && 'active']} />)}</span>
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