site/quartz/components/scripts/callout.inline.ts

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2024-04-05 00:03:11 +00:00
function toggleCallout(this: HTMLElement) {
const outerBlock = this.parentElement!
outerBlock.classList.toggle("is-collapsed")
const collapsed = outerBlock.classList.contains("is-collapsed")
const height = collapsed ? this.scrollHeight : outerBlock.scrollHeight
outerBlock.style.maxHeight = height + "px"
// walk and adjust height of all parents
let current = outerBlock
let parent = outerBlock.parentElement
while (parent) {
if (!parent.classList.contains("callout")) {
return
}
const collapsed = parent.classList.contains("is-collapsed")
const height = collapsed ? parent.scrollHeight : parent.scrollHeight + current.scrollHeight
parent.style.maxHeight = height + "px"
current = parent
parent = parent.parentElement
}
}
function setupCallout() {
const collapsible = document.getElementsByClassName(
`callout is-collapsible`,
) as HTMLCollectionOf<HTMLElement>
for (const div of collapsible) {
const title = div.firstElementChild
if (title) {
title.addEventListener("click", toggleCallout)
window.addCleanup(() => title.removeEventListener("click", toggleCallout))
const collapsed = div.classList.contains("is-collapsed")
const height = collapsed ? title.scrollHeight : div.scrollHeight
div.style.maxHeight = height + "px"
}
}
}
document.addEventListener("nav", setupCallout)
window.addEventListener("resize", setupCallout)