MediaWiki:Gadget-vector-headanchor.js
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/*!
* Vector HeadAnchors gadget
*
* Copyright 2013 Timo Tijhof, https://mediawiki.org/wiki/MediaWiki:Gadget-vector-headanchor.js
* SPDX-License-Identifier: MIT
* License: https://opensource.org/licenses/MIT
*/
mw.hook( 'wikipage.content' ).add( function ( $content ) {
$content.find( 'div.mw-heading' ).each( function ( i, heading ) {
var el = heading.querySelector( '[id]:is(h1,h2,h3,h4,h5,h6)' );
if ( !el || heading.querySelector( '.tpl-vheadanchor') ) {
// No anchor possible, or anchor already inserted
return;
}
// Support legacy Parser (wgParserEnableLegacyHeadingDOM=false):
// <div class=mw-heading><h2 id>Headline</h2></div>
//
// Support Parsoid:
// <section>
// <div class=mw-heading><h2 id>Headline</h2></div>
// </section>
//
// Support DiscussionTools:
// - DiscussionTools wraps H2 into DIV.mw-heading, setting overflow:hidden on
// the outer DIV instead of H2. Our override has to match to avoid clipping
// the anchor.
// - DiscussionTools inserts an element with [id] before H2, so the above selector
// for `el` must hardcode all heading tags instead of just [id].
// <div class=mw-heading>
// <span id="ooui-php-1" class="ext-discussiontools-init-section-subscribeButton"><a href>Subscribe</a></span>
// <h2 id><span>…</span>Headline<span>…</span></h2>
// </div>
heading.classList.add( 'tpl-vheadanchor-heading' );
// Insert anchor.
anchor = document.createElement( 'a' );
anchor.href = '#' + el.id;
anchor.textContent = '#';
anchor.title = 'Link to this section';
anchor.className = 'tpl-vheadanchor';
heading.insertBefore( anchor, el.nextSibling );
} );
} );