|
|
@@ -1,29 +1,30 @@ |
|
|
|
import {svg} from '../svg.js'; |
|
|
|
|
|
|
|
const addPrefix = (str) => `user-content-${str}`; |
|
|
|
const removePrefix = (str) => str.replace(/^user-content-/, ''); |
|
|
|
const hasPrefix = (str) => str.startsWith('user-content-'); |
|
|
|
|
|
|
|
// scroll to anchor while respecting the `user-content` prefix that exists on the target |
|
|
|
function scrollToAnchor(encodedId, initial) { |
|
|
|
// abort if the browser has already scrolled to another anchor during page load |
|
|
|
if (!encodedId || (initial && document.querySelector(':target'))) return; |
|
|
|
function scrollToAnchor(encodedId) { |
|
|
|
if (!encodedId) return; |
|
|
|
const id = decodeURIComponent(encodedId); |
|
|
|
let el = document.getElementById(`user-content-${id}`); |
|
|
|
const prefixedId = addPrefix(id); |
|
|
|
let el = document.getElementById(prefixedId); |
|
|
|
|
|
|
|
// check for matching user-generated `a[name]` |
|
|
|
if (!el) { |
|
|
|
const nameAnchors = document.getElementsByName(`user-content-${id}`); |
|
|
|
const nameAnchors = document.getElementsByName(prefixedId); |
|
|
|
if (nameAnchors.length) { |
|
|
|
el = nameAnchors[0]; |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
// compat for links with old 'user-content-' prefixed hashes |
|
|
|
if (!el && id.startsWith('user-content-')) { |
|
|
|
const el = document.getElementById(id); |
|
|
|
if (el) el.scrollIntoView(); |
|
|
|
if (!el && hasPrefix(id)) { |
|
|
|
return document.getElementById(id)?.scrollIntoView(); |
|
|
|
} |
|
|
|
|
|
|
|
if (el) { |
|
|
|
el.scrollIntoView(); |
|
|
|
} |
|
|
|
el?.scrollIntoView(); |
|
|
|
} |
|
|
|
|
|
|
|
export function initMarkupAnchors() { |
|
|
@@ -32,11 +33,10 @@ export function initMarkupAnchors() { |
|
|
|
|
|
|
|
for (const markupEl of markupEls) { |
|
|
|
// create link icons for markup headings, the resulting link href will remove `user-content-` |
|
|
|
for (const heading of markupEl.querySelectorAll(`:is(h1, h2, h3, h4, h5, h6`)) { |
|
|
|
const originalId = heading.id.replace(/^user-content-/, ''); |
|
|
|
for (const heading of markupEl.querySelectorAll('h1, h2, h3, h4, h5, h6')) { |
|
|
|
const a = document.createElement('a'); |
|
|
|
a.classList.add('anchor'); |
|
|
|
a.setAttribute('href', `#${encodeURIComponent(originalId)}`); |
|
|
|
a.setAttribute('href', `#${encodeURIComponent(removePrefix(heading.id))}`); |
|
|
|
a.innerHTML = svg('octicon-link'); |
|
|
|
heading.prepend(a); |
|
|
|
} |
|
|
@@ -45,8 +45,7 @@ export function initMarkupAnchors() { |
|
|
|
for (const a of markupEl.querySelectorAll('a[href^="#"]')) { |
|
|
|
const href = a.getAttribute('href'); |
|
|
|
if (!href.startsWith('#user-content-')) continue; |
|
|
|
const originalId = href.replace(/^#user-content-/, ''); |
|
|
|
a.setAttribute('href', `#${originalId}`); |
|
|
|
a.setAttribute('href', `#${removePrefix(href.substring(1))}`); |
|
|
|
} |
|
|
|
|
|
|
|
// add `user-content-` prefix to user-generated `a[name]` link targets |
|
|
@@ -54,15 +53,18 @@ export function initMarkupAnchors() { |
|
|
|
for (const a of markupEl.querySelectorAll('a[name]')) { |
|
|
|
const name = a.getAttribute('name'); |
|
|
|
if (!name) continue; |
|
|
|
a.setAttribute('name', `user-content-${a.name}`); |
|
|
|
a.setAttribute('name', addPrefix(a.name)); |
|
|
|
} |
|
|
|
|
|
|
|
for (const a of markupEl.querySelectorAll('a[href^="#"]')) { |
|
|
|
a.addEventListener('click', (e) => { |
|
|
|
scrollToAnchor(e.currentTarget.getAttribute('href')?.substring(1), false); |
|
|
|
scrollToAnchor(e.currentTarget.getAttribute('href')?.substring(1)); |
|
|
|
}); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
|
scrollToAnchor(window.location.hash.substring(1), true); |
|
|
|
// scroll to anchor unless the browser has already scrolled somewhere during page load |
|
|
|
if (!document.querySelector(':target')) { |
|
|
|
scrollToAnchor(window.location.hash?.substring(1)); |
|
|
|
} |
|
|
|
} |