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

45 lines
1.4 KiB
TypeScript

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.removeEventListener(`click`, toggleCallout)
title.addEventListener(`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)