111 lines
4.5 KiB
JavaScript
111 lines
4.5 KiB
JavaScript
if (!customElements.get('media-gallery')) {
|
|
customElements.define(
|
|
'media-gallery',
|
|
class MediaGallery extends HTMLElement {
|
|
constructor() {
|
|
super();
|
|
this.elements = {
|
|
liveRegion: this.querySelector('[id^="GalleryStatus"]'),
|
|
viewer: this.querySelector('[id^="GalleryViewer"]'),
|
|
thumbnails: this.querySelector('[id^="GalleryThumbnails"]'),
|
|
};
|
|
this.mql = window.matchMedia('(min-width: 750px)');
|
|
if (!this.elements.thumbnails) return;
|
|
|
|
this.elements.viewer.addEventListener('slideChanged', debounce(this.onSlideChanged.bind(this), 500));
|
|
this.elements.thumbnails.querySelectorAll('[data-target]').forEach((mediaToSwitch) => {
|
|
mediaToSwitch
|
|
.querySelector('button')
|
|
.addEventListener('click', this.setActiveMedia.bind(this, mediaToSwitch.dataset.target, false));
|
|
});
|
|
if (this.dataset.desktopLayout.includes('thumbnail') && this.mql.matches) this.removeListSemantic();
|
|
}
|
|
|
|
onSlideChanged(event) {
|
|
const thumbnail = this.elements.thumbnails.querySelector(
|
|
`[data-target="${event.detail.currentElement.dataset.mediaId}"]`
|
|
);
|
|
this.setActiveThumbnail(thumbnail);
|
|
}
|
|
|
|
setActiveMedia(mediaId, prepend) {
|
|
const activeMedia = this.elements.viewer.querySelector(`[data-media-id="${mediaId}"]`);
|
|
this.elements.viewer.querySelectorAll('[data-media-id]').forEach((element) => {
|
|
element.classList.remove('is-active');
|
|
});
|
|
activeMedia.classList.add('is-active');
|
|
|
|
if (prepend) {
|
|
activeMedia.parentElement.prepend(activeMedia);
|
|
if (this.elements.thumbnails) {
|
|
const activeThumbnail = this.elements.thumbnails.querySelector(`[data-target="${mediaId}"]`);
|
|
activeThumbnail.parentElement.prepend(activeThumbnail);
|
|
}
|
|
if (this.elements.viewer.slider) this.elements.viewer.resetPages();
|
|
}
|
|
|
|
this.preventStickyHeader();
|
|
window.setTimeout(() => {
|
|
if (!this.mql.matches || this.elements.thumbnails) {
|
|
activeMedia.parentElement.scrollTo({ left: activeMedia.offsetLeft });
|
|
}
|
|
const activeMediaRect = activeMedia.getBoundingClientRect();
|
|
// Don't scroll if the image is already in view
|
|
if (activeMediaRect.top > -0.5) return;
|
|
const top = activeMediaRect.top + window.scrollY;
|
|
window.scrollTo({ top: top, behavior: 'smooth' });
|
|
});
|
|
this.playActiveMedia(activeMedia);
|
|
|
|
if (!this.elements.thumbnails) return;
|
|
const activeThumbnail = this.elements.thumbnails.querySelector(`[data-target="${mediaId}"]`);
|
|
this.setActiveThumbnail(activeThumbnail);
|
|
this.announceLiveRegion(activeMedia, activeThumbnail.dataset.mediaPosition);
|
|
}
|
|
|
|
setActiveThumbnail(thumbnail) {
|
|
if (!this.elements.thumbnails || !thumbnail) return;
|
|
|
|
this.elements.thumbnails
|
|
.querySelectorAll('button')
|
|
.forEach((element) => element.removeAttribute('aria-current'));
|
|
thumbnail.querySelector('button').setAttribute('aria-current', true);
|
|
if (this.elements.thumbnails.isSlideVisible(thumbnail, 10)) return;
|
|
|
|
this.elements.thumbnails.slider.scrollTo({ left: thumbnail.offsetLeft });
|
|
}
|
|
|
|
announceLiveRegion(activeItem, position) {
|
|
const image = activeItem.querySelector('.product__modal-opener--image img');
|
|
if (!image) return;
|
|
image.onload = () => {
|
|
this.elements.liveRegion.setAttribute('aria-hidden', false);
|
|
this.elements.liveRegion.innerHTML = window.accessibilityStrings.imageAvailable.replace('[index]', position);
|
|
setTimeout(() => {
|
|
this.elements.liveRegion.setAttribute('aria-hidden', true);
|
|
}, 2000);
|
|
};
|
|
image.src = image.src;
|
|
}
|
|
|
|
playActiveMedia(activeItem) {
|
|
window.pauseAllMedia();
|
|
const deferredMedia = activeItem.querySelector('.deferred-media');
|
|
if (deferredMedia) deferredMedia.loadContent(false);
|
|
}
|
|
|
|
preventStickyHeader() {
|
|
this.stickyHeader = this.stickyHeader || document.querySelector('sticky-header');
|
|
if (!this.stickyHeader) return;
|
|
this.stickyHeader.dispatchEvent(new Event('preventHeaderReveal'));
|
|
}
|
|
|
|
removeListSemantic() {
|
|
if (!this.elements.viewer.slider) return;
|
|
this.elements.viewer.slider.setAttribute('role', 'presentation');
|
|
this.elements.viewer.sliderItems.forEach((slide) => slide.setAttribute('role', 'presentation'));
|
|
}
|
|
}
|
|
);
|
|
}
|