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more accessible heading-anchors w/ anchored-heading wrapper divs (#44)
* more accessible heading-anchors with anchored-heading wrapper divs see conversation on mastodon at: https://tweesecake.social/@weirdwriter/112939207207501581 * add --anchored-heading-offset for mobile safari * post + anchored-heading margin fixes and css cleanup * spaces to tabs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /** | ||
| * Thanks to @daviddarnes/heading-anchors 2.0.0 | ||
| * https://github.com/daviddarnes/heading-anchors | ||
| * and 11ty | ||
| * https://github.com/11ty/11ty-website/blob/main/src/_includes/components/heading-anchors.js | ||
| */ | ||
| class HeadingAnchors extends HTMLElement { | ||
| static register(tagName) { | ||
| if ("customElements" in window) { | ||
| customElements.define(tagName || "heading-anchors", HeadingAnchors); | ||
| } | ||
| } | ||
|
|
||
| connectedCallback() { | ||
| this.headings.forEach((heading) => { | ||
| if ( | ||
| heading.hasAttribute("data-heading-anchors-optout") === false | ||
| ) { | ||
| heading.insertAdjacentHTML(this.position, this.anchor(heading)); | ||
| heading.remove(); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| anchor(heading) { | ||
| // TODO this would be good use case for shadow dom | ||
| let anchor = document.createElement("a"); | ||
| anchor.setAttribute("data-pagefind-ignore", ""); | ||
| anchor.href = `#${heading.id}`; | ||
| anchor.classList.add("direct-link"); | ||
| anchor.innerHTML = `<span class="sr-only">Jump to heading</span><span aria-hidden="true">#</span>`; | ||
| let flexybox = document.createElement("div"); | ||
| flexybox.classList.add("anchored-heading"); | ||
| flexybox.innerHTML = `${heading.outerHTML}${anchor.outerHTML}`; | ||
| return flexybox.outerHTML; | ||
| } | ||
|
|
||
| get headings() { | ||
| return this.querySelectorAll( | ||
| this.selector.split(",").map((entry) => `${entry.trim()}[id]`) | ||
| ); | ||
| } | ||
|
|
||
| get selector() { | ||
| return this.getAttribute("selector") || "h1,h2,h3,h4"; | ||
| } | ||
|
|
||
| get position() { | ||
| return this.getAttribute("position") || "beforebegin"; | ||
| } | ||
| } | ||
|
|
||
| HeadingAnchors.register(); |