mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-25 00:44:15 -05:00
e8f3efe1da
Fix #29877 --------- Co-authored-by: silverwind <me@silverwind.io> (cherry picked from commit 76ec5410510f09b3ea2bfd2602fcb8f3251087b6)
68 lines
2.4 KiB
JavaScript
68 lines
2.4 KiB
JavaScript
import {svg} from '../svg.js';
|
|
|
|
// scroll to anchor while respecting the `user-content` prefix that exists on the target
|
|
function scrollToAnchor(encodedId, initial) {
|
|
// abort if the browser has already scrolled to another anchor during page load
|
|
if (!encodedId || (initial && document.querySelector(':target'))) return;
|
|
const id = decodeURIComponent(encodedId);
|
|
let el = document.getElementById(`user-content-${id}`);
|
|
|
|
// check for matching user-generated `a[name]`
|
|
if (!el) {
|
|
const nameAnchors = document.getElementsByName(`user-content-${id}`);
|
|
if (nameAnchors.length) {
|
|
el = nameAnchors[0];
|
|
}
|
|
}
|
|
|
|
// compat for links with old 'user-content-' prefixed hashes
|
|
if (!el && id.startsWith('user-content-')) {
|
|
const el = document.getElementById(id);
|
|
if (el) el.scrollIntoView();
|
|
}
|
|
|
|
if (el) {
|
|
el.scrollIntoView();
|
|
}
|
|
}
|
|
|
|
export function initMarkupAnchors() {
|
|
const markupEls = document.querySelectorAll('.markup');
|
|
if (!markupEls.length) return;
|
|
|
|
for (const markupEl of markupEls) {
|
|
// create link icons for markup headings, the resulting link href will remove `user-content-`
|
|
for (const heading of markupEl.querySelectorAll(`:is(h1, h2, h3, h4, h5, h6`)) {
|
|
const originalId = heading.id.replace(/^user-content-/, '');
|
|
const a = document.createElement('a');
|
|
a.classList.add('anchor');
|
|
a.setAttribute('href', `#${encodeURIComponent(originalId)}`);
|
|
a.innerHTML = svg('octicon-link');
|
|
heading.prepend(a);
|
|
}
|
|
|
|
// remove `user-content-` prefix from links so they don't show in url bar when clicked
|
|
for (const a of markupEl.querySelectorAll('a[href^="#"]')) {
|
|
const href = a.getAttribute('href');
|
|
if (!href.startsWith('#user-content-')) continue;
|
|
const originalId = href.replace(/^#user-content-/, '');
|
|
a.setAttribute('href', `#${originalId}`);
|
|
}
|
|
|
|
// add `user-content-` prefix to user-generated `a[name]` link targets
|
|
// TODO: this prefix should be added in backend instead
|
|
for (const a of markupEl.querySelectorAll('a[name]')) {
|
|
const name = a.getAttribute('name');
|
|
if (!name) continue;
|
|
a.setAttribute('name', `user-content-${a.name}`);
|
|
}
|
|
|
|
for (const a of markupEl.querySelectorAll('a[href^="#"]')) {
|
|
a.addEventListener('click', (e) => {
|
|
scrollToAnchor(e.currentTarget.getAttribute('href')?.substring(1), false);
|
|
});
|
|
}
|
|
}
|
|
|
|
scrollToAnchor(window.location.hash.substring(1), true);
|
|
}
|