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

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function toggleCallout(this: HTMLElement) {
const outerBlock = this.parentElement!
this.classList.toggle(`is-collapsed`)
const collapsed = this.classList.contains(`is-collapsed`)
const height = collapsed ? this.scrollHeight : outerBlock.scrollHeight
outerBlock.style.maxHeight = height + `px`
}
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function setupCallout() {
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const collapsible = document.getElementsByClassName(`callout is-collapsible`) as HTMLCollectionOf<HTMLElement>
for (const div of collapsible) {
const title = div.firstElementChild
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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`
}
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}
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}
document.addEventListener(`nav`, setupCallout)
window.addEventListener(`resize`, setupCallout)