Simple Lightbox
此腳本不應該直接安裝，它是一個供其他腳本使用的函式庫。欲使用本函式庫，請在腳本 metadata 寫上： // @require https://update.cn-greasyfork.org/scripts/480727/1285876/LighboxModern.js
class LightboxModern {
_swipeStartX = null;
_swipeStartY = null;
_swipeEndX = null;
_swipeEndY = null;
_clickTimeStart = null;
_clickTimeEnd = null;
// Tentukan threshold untuk dianggap sebagai swipe
_THRESHOLD = 20;
_CLICK_TIME_THRESHOLD = 100;
_currentImage = null;
_progress = 1
_idFadeOutTool = null;
constructor(container, { images = [] } = {}) {
this.container = container;
this.container.classList.add("LightboxModern", "FadeIn")
this.container.innerHTML = ""
this.progress = this._renderProgress();
this.container.append(this.progress);
this.images = images
const imagesContainer = this._renderListImage(images);
this.container.append(imagesContainer)
this._updateProgress()
// this.swiper = this._SwipeListener()
// this.container.append(this.swiper)
this.tool = this._RenderTool()
this.container.append(this.tool)
}
_renderListImage(images) {
const container = document.createElement("div");
container.classList.add("ImagesContainer");
this._listenSwipe(container)
for(const index in images) {
const wrapper = document.createElement("div");
wrapper.classList.add("ImageWrapper");
if(index == 0) {
wrapper.classList.add("FadeIn")
this._currentImage = wrapper;
}
const imgElement = document.createElement("img");
imgElement.src = images[index];
imgElement.alt = `Images Number ${index + 1}`;
const padding = document.createElement("div")
padding.classList.add("ImagePadding");
wrapper.append(imgElement, padding)
container.append(wrapper)
}
return container;
}
_renderProgress() {
const container = document.createElement("div");
container.classList.add("Progress");
return container;
}
_updateProgress() {
this.progress.style.width = `${Math.floor(this._progress / this.images.length * 100)}%`
}
_SwipeListener() {
const container = document.createElement("div");
container.classList.add("Swiper")
_listenSwipe
return container;
}
_listenSwipe(element) {
element.addEventListener("touchstart", (e) => {
this._clickTimeStart = new Date().getTime()
this._swipeStartX = e.touches[0].clientX;
this._swipeStartY = e.touches[0].clientY;
})
element.addEventListener("touchmove", (e) => {
if(e.touches.length === 1) {
e.preventDefault(); // Mencegah scroll selama swipe
this._swipeEndX = e.touches[0].clientX;
this._swipeEndY = e.touches[0].clientY;
}
})
element.addEventListener("touchend", (e) => {
this._clickTimeEnd = new Date().getTime()
this._detectSwipe()
})
}
_RenderTool() {
const container = document.createElement("div");
container.classList.add("LightboxTool")
this._listenSwipe(container)
const header = document.createElement("div");
header.classList.add("ToolHeader")
const closeButton = document.createElement("button")
closeButton.classList.add("btn")
closeButton.innerText = "Close"
closeButton.addEventListener("click", () => {
this.container.classList.remove("FadeIn")
})
const fullScreenButton = document.createElement("button")
fullScreenButton.classList.add("btn")
fullScreenButton.innerText = "[ ]"
fullScreenButton.onclick = () => {
if(document.fullscreenElement) {
document.exitFullscreen()
} else {
document.documentElement.requestFullscreen()
}
}
header.append(fullScreenButton, closeButton)
const footer = document.createElement("div")
footer.classList.add("ToolFooter")
const downloadImage = document.createElement("button")
downloadImage.classList.add("btn")
downloadImage.innerText = "Download Image"
downloadImage.onclick = () => this.downloadImage(this._currentImage.querySelector("img").src)
const downloadAllImage = document.createElement("button")
downloadAllImage.classList.add("btn")
downloadAllImage.innerText = "Download All Image"
downloadAllImage.onclick = () => {
downloadAllImage.disabled = true;
for(const image of this.images) {
this.downloadImage(image)
}
downloadAllImage.disabled = false;
}
footer.append(downloadImage, downloadAllImage)
container.append(header, footer);
container.addEventListener("click", () => {
container.classList.toggle("FadeIn")
})
return container
}
_fadeOutImage() {
if(this._currentImage) this._currentImage.classList.remove("FadeIn")
}
_nextImage() {
const nextElement = this._currentImage.nextElementSibling;
this._fadeOutImage();
if( nextElement ) {
nextElement.classList.add("FadeIn")
this._currentImage = nextElement;
this._progress += 1
} else {
const currentImage = this.container.querySelector(".ImagesContainer .ImageWrapper");
currentImage.classList.add("FadeIn")
this._currentImage = currentImage;
this._progress = 1
}
}
_prevImage() {
const prevElement = this._currentImage.previousElementSibling;
this._fadeOutImage()
if(prevElement) {
prevElement.classList.add("FadeIn")
this._currentImage = prevElement;
this._progress -= 1
} else {
const currentImage = this.container.querySelector(".ImagesContainer").lastElementChild
currentImage.classList.add("FadeIn")
this._currentImage = currentImage;
this._progress = this.images.length
}
}
_detectSwipe() {
const deltaX = this._swipeEndX - this._swipeStartX;
const deltaY = this._swipeEndY - this._swipeStartY;
const deltaTime = this._clickTimeEnd - this._clickTimeStart
if((Math.abs(deltaX) > this._THRESHOLD || Math.abs(deltaY) > this._THRESHOLD) &&
deltaTime > this._CLICK_TIME_THRESHOLD) {
if(deltaX > 0) {
this._prevImage();
} else {
this._nextImage();
}
this._updateProgress()
} else if(deltaTime < this._CLICK_TIME_THRESHOLD ) {
this.tool.classList.toggle("FadeIn")
if(this._idFadeOutTool) clearTimeout(this._idFadeOutTool)
this._idFadeOutTool = setTimeout(() => this.tool.classList.remove("FadeIn") , 1500)
} else {
console.log('Tidak ada swipe yang terdeteksi.');
}
}
downloadImage(url) {
const link = document.createElement("a")
link.href = url
link.click()
}
}