roadmap/assets/js/popover.js

75 lines
2.7 KiB
JavaScript

function htmlToElement(html) {
const template = document.createElement("template")
html = html.trim()
template.innerHTML = html
return template.content.firstChild
}
function initPopover(baseURL, useContextualBacklinks, renderLatex) {
const basePath = baseURL.replace(window.location.origin, "")
fetchData.then(({ content }) => {
const links = [...document.getElementsByClassName("internal-link")]
links
.filter(li => li.dataset.src || (li.dataset.idx && useContextualBacklinks))
.forEach(li => {
var el
if (li.dataset.ctx) {
const linkDest = content[li.dataset.src]
const popoverElement = `<div class="popover">
<h3>${linkDest.title}</h3>
<p>${highlight(removeMarkdown(linkDest.content), li.dataset.ctx)}...</p>
<p class="meta">${new Date(linkDest.lastmodified).toLocaleDateString()}</p>
</div>`
el = htmlToElement(popoverElement)
} else {
const linkDest = content[li.dataset.src.replace(/\/$/g, "").replace(basePath, "")]
if (linkDest) {
let splitLink = li.href.split("#")
let cleanedContent = removeMarkdown(linkDest.content)
if (splitLink.length > 1) {
let headingName = decodeURIComponent(splitLink[1]).replace(/\-/g, " ")
let headingIndex = cleanedContent.toLowerCase().indexOf("<b>" + headingName + "</b>")
cleanedContent = cleanedContent.substring(headingIndex, cleanedContent.length)
}
const popoverElement = `<div class="popover">
<h3>${linkDest.title}</h3>
<p>${cleanedContent.split(" ", 20).join(" ")}...</p>
<p class="meta">${new Date(linkDest.lastmodified).toLocaleDateString()}</p>
</div>`
el = htmlToElement(popoverElement)
}
}
if (el) {
li.appendChild(el)
if (renderLatex) {
renderMathInElement(el, {
delimiters: [
{ left: '$$', right: '$$', display: false },
{ left: '$', right: '$', display: false },
],
throwOnError: false
})
}
li.addEventListener("mouseover", () => {
// fix tooltip positioning
window.FloatingUIDOM.computePosition(li, el, {
middleware: [window.FloatingUIDOM.offset(10), window.FloatingUIDOM.inline(), window.FloatingUIDOM.shift()],
}).then(({ x, y }) => {
Object.assign(el.style, {
left: `${x}px`,
top: `${y}px`,
})
})
el.classList.add("visible")
})
li.addEventListener("mouseout", () => {
el.classList.remove("visible")
})
}
})
})
}