Press n or j to go to the next uncovered block, b, p or k for the previous block.
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const lightboxEl = initLightboxEl();
openLightboxEl(lightboxEl, url, images);
}
const lightboxTpl = `
<div class="vbox-preloader">Loading...</div>
<div class="vbox-container">
<div class="vbox-content">
</div>
</div>
<div class="vbox-title" style="display: none;"></div>
<div class="vbox-num" style="display: none;">0/0</div>
<div class="vbox-close">X</div>
<button class="vbox-next">next</button>
<button class="vbox-prev">prev</button>
`;
const initLightboxEl = () => {
let lightboxEl = document.querySelector(".vbox-overlay") as HTMLElement;
if (!lightboxEl) {
lightboxEl = document.createElement("div");
lightboxEl.className = "vbox-overlay";
}
lightboxEl.style.display = "none";
lightboxEl.style.display = "0";
lightboxEl.innerHTML = lightboxTpl;
const closeLightbox = (event: Event) => {
event.preventDefault();
closeLightboxEl(lightboxEl);
};
const closeButton = lightboxEl.querySelector(".vbox-close");
Eif (closeButton) {
closeButton.addEventListener("click", closeLightbox);
}
lightboxEl.addEventListener("click", (event) => {
const ignore = ["figlio", "vbox-next", "vbox-prev"];
// This assumes a single class on each item
const target = event.target as HTMLElement;
if (!target) {
return;
}
if (ignore.indexOf(target.className) < 0) {
closeLightbox(event);
}
});
return lightboxEl;
};
const loadLightboxImage = (
lightboxEl: HTMLElement,
url: string | undefined,
images: Array<any>,
) => {
const contentEl = lightboxEl.querySelector(".vbox-content") as HTMLElement;
Eif (contentEl) {
// hide content before it loads
contentEl.style.opacity = "0";
const currentMedia = contentEl.querySelector(".figlio");
Iif (currentMedia) {
contentEl.removeChild(currentMedia);
}
}
let media;
// load media
if (url && url.includes(".gif")) {
try {
media = document.createElement("video");
media.autoplay = true;
media.loop = true;
media.classList.add("figlio");
contentEl.appendChild(media);
contentEl.style.opacity = "1";
const originalEl = document.body.querySelector(
`[data-original="${url}"]`,
);
Iif (originalEl) {
const webm = originalEl.querySelector(
"[type='video/webm']",
) as HTMLMediaElement;
const mp4 = originalEl.querySelector(
"[type='video/mp4']",
) as HTMLMediaElement;
if (media.canPlayType("video/webm") && webm) {
media.src = webm.src;
} else if (media.canPlayType("video/mp4") && mp4) {
media.src = mp4.src;
}
}
} catch (e) {
if (media && media.parentNode) {
media.parentNode.removeChild(media);
}
media = false;
}
}
if (!media) {
media = new Image();
media.classList.add("figlio");
contentEl.appendChild(media);
media.addEventListener("load", () => {
contentEl.style.opacity = "1";
});
Eif (url) {
media.src = url;
}
}
// update prev/next buttons
Eif (images && images.length) {
const imageIndex = images.indexOf(url);
const prevButton = lightboxEl.querySelector(".vbox-prev") as HTMLElement;
const nextButton = lightboxEl.querySelector(".vbox-next") as HTMLElement;
Eif (prevButton) {
Iif (imageIndex > 0) {
prevButton.removeAttribute("disabled");
prevButton.dataset.url = images[imageIndex - 1];
} else {
prevButton.setAttribute("disabled", "disabled");
prevButton.dataset.url = undefined;
}
}
Eif (nextButton) {
if (imageIndex < images.length - 1) {
nextButton.removeAttribute("disabled");
nextButton.dataset.url = images[imageIndex + 1];
} else E{
nextButton.setAttribute("disabled", "disabled");
nextButton.dataset.url = undefined;
}
}
}
};
const openLightboxEl = (
lightboxEl: HTMLElement,
url: string,
images: Array<any>,
) => {
// prepare navigating to next/prev images
Eif (images && images.length) {
const handleNextPrevClick = (event: Event) => {
event.preventDefault();
const target = event.target as HTMLElement;
if (target.dataset.url) {
loadLightboxImage(lightboxEl, target.dataset.url, images);
}
};
const prevButton = lightboxEl.querySelector(".vbox-prev") as HTMLElement;
const nextButton = lightboxEl.querySelector(".vbox-next") as HTMLElement;
const handleNextPrevKey = (event: KeyboardEvent) => {
const KEYS = {
ESC: 27,
LEFT: 37,
RIGHT: 39,
};
let image;
switch (event.keyCode) {
case KEYS.ESC:
closeLightboxEl(lightboxEl);
break;
case KEYS.LEFT:
if (prevButton) {
image = prevButton.dataset.url;
}
if (image !== "null") {
loadLightboxImage(lightboxEl, image, images);
}
break;
case KEYS.RIGHT:
image = nextButton.dataset.url;
if (image !== "null") {
loadLightboxImage(lightboxEl, image, images);
}
break;
}
};
Eif (nextButton) {
nextButton.addEventListener("click", handleNextPrevClick);
}
Eif (prevButton) {
prevButton.addEventListener("click", handleNextPrevClick);
}
window.addEventListener("keyup", handleNextPrevKey);
}
// open lightbox
document.body.classList.add("vbox-open");
document.body.appendChild(lightboxEl);
lightboxEl.style.opacity = "1";
lightboxEl.style.display = "block";
// load image
loadLightboxImage(lightboxEl, url, images);
};
const closeLightboxEl = (lightboxEl: HTMLElement) => {
lightboxEl.style.opacity = "0";
lightboxEl.style.display = "none";
if (lightboxEl.parentNode) {
lightboxEl.parentNode.removeChild(lightboxEl);
}
document.body.classList.remove("vbox-open");
};
const lightbox = {
openLightbox,
};
export default lightbox;
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