94 lines
5.7 KiB
Plaintext
94 lines
5.7 KiB
Plaintext
---
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interface Slide { src: string; alt: string; caption: string }
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interface Props { id: string; label: string; slides: Slide[] }
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const { id, label, slides } = Astro.props;
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---
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<section class="image-carousel" id={id} aria-label={label} data-image-carousel>
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<div class="image-carousel__stage">
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{slides.map((slide, index) => (
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<figure id={`${id}-slide-${index + 1}`} data-slide>
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<img src={slide.src} alt={slide.alt} width="948" height="534" loading={index === 0 ? 'eager' : 'lazy'} />
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<figcaption>{slide.caption}</figcaption>
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</figure>
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))}
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<div data-carousel-controls hidden>
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<button class="image-carousel__previous" type="button" aria-label="Previous slide" data-previous><span aria-hidden="true">❮</span></button>
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<button class="image-carousel__next" type="button" aria-label="Next slide" data-next><span aria-hidden="true">❯</span></button>
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</div>
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</div>
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<div data-carousel-controls hidden>
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<div class="image-carousel__thumbnails" role="group" aria-label="Choose a tour photo">
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{slides.map((slide, index) => (
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<button type="button" data-thumbnail aria-label={`Show photo ${index + 1}: ${slide.caption}`} aria-controls={`${id}-slide-${index + 1}`}>
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<img src={slide.src} alt="" width="80" height="80" loading="lazy" />
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</button>
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))}
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</div>
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<p class="sr-only" data-carousel-status role="status" aria-atomic="true"></p>
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</div>
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</section>
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<script>
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document.querySelectorAll<HTMLElement>('[data-image-carousel]').forEach(carousel => {
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const slides = [...carousel.querySelectorAll<HTMLElement>('[data-slide]')];
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const thumbnails = [...carousel.querySelectorAll<HTMLButtonElement>('[data-thumbnail]')];
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const status = carousel.querySelector<HTMLElement>('[data-carousel-status]')!;
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let current = 0;
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const show = (index: number, announce = true) => {
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current = (index + slides.length) % slides.length;
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slides.forEach((slide, i) => {
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slide.hidden = i !== current;
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thumbnails[i].setAttribute('aria-pressed', String(i === current));
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});
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if (announce) status.textContent = `Photo ${current + 1} of ${slides.length}: ${slides[current].querySelector('figcaption')?.textContent}`;
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};
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slides.forEach((slide, index) => {
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slide.setAttribute('role', 'group');
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slide.setAttribute('aria-roledescription', 'slide');
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slide.setAttribute('aria-label', `${index + 1} of ${slides.length}`);
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});
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carousel.setAttribute('aria-roledescription', 'carousel');
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carousel.querySelector('[data-previous]')!.addEventListener('click', () => show(current - 1));
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carousel.querySelector('[data-next]')!.addEventListener('click', () => show(current + 1));
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thumbnails.forEach((button, index) => button.addEventListener('click', () => show(index)));
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carousel.addEventListener('keydown', event => {
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if (!(event.target instanceof HTMLButtonElement)) return;
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if (event.key === 'ArrowRight' || event.key === 'ArrowLeft') {
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event.preventDefault(); show(current + (event.key === 'ArrowRight' ? 1 : -1));
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}
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});
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show(0, false);
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carousel.dataset.enhanced = 'true';
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carousel.querySelectorAll<HTMLElement>('[data-carousel-controls]').forEach(control => control.hidden = false);
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});
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</script>
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<style>
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.image-carousel { max-width: 1000px; margin: 2rem auto; }
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.image-carousel__stage { position: relative; }
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.image-carousel [data-carousel-status] { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
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.image-carousel figure { position: relative; margin: 0 0 2rem; }
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.image-carousel [hidden] { display: none !important; }
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.image-carousel figure img { display: block; width: 100%; height: auto; margin: 0; }
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.image-carousel figcaption { margin: 0; padding: .5rem .75rem; background: var(--color-primary); color: white; text-align: center; font-size: 1rem; line-height: 1.4; }
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.image-carousel[data-enhanced] figure { margin-bottom: 1rem; }
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.image-carousel[data-enhanced] figcaption { position: absolute; bottom: 0; width: 100%; background: rgb(37 64 128 / 90%); }
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.image-carousel button { cursor: pointer; }
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.image-carousel__previous, .image-carousel__next { position: absolute; top: 50%; transform: translateY(-50%); min-width: 44px; min-height: 44px; padding: 1rem; border: 0; background: rgb(255 255 255 / 95%); color: var(--color-primary); font-size: 2rem; line-height: 1; border-radius: 3px; }
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.image-carousel__previous { left: 0; }
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.image-carousel__next { right: 0; }
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.image-carousel__previous:hover, .image-carousel__next:hover { background: var(--color-primary); color: white; }
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.image-carousel button:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 3px; box-shadow: 0 0 0 6px white; }
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.image-carousel__thumbnails { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; padding: 6px; }
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.image-carousel__thumbnails button { padding: 2px; border: 3px solid transparent; background: white; border-radius: 0; }
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.image-carousel__thumbnails img { display: block; width: 80px; height: 80px; object-fit: cover; margin: 0; opacity: .6; }
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.image-carousel__thumbnails button[aria-pressed="true"] { border-color: var(--color-primary); }
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.image-carousel__thumbnails button:is(:hover, [aria-pressed="true"]) img { opacity: 1; }
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@media (max-width: 479px) {
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.image-carousel__previous, .image-carousel__next { padding: .75rem; font-size: 1rem; }
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.image-carousel[data-enhanced] figcaption { position: static; font-size: .875rem; }
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.image-carousel__previous, .image-carousel__next { top: 30%; }
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}
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/* No automatic rotation or animation: reduced-motion users get the same stable slides. */
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</style>
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