MediaWiki:Common.js

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/* EDFM: small, purely presentational enhancements. None are required
 * for the site to function -- all degrade gracefully with JS off -- and
 * none are achievable in pure CSS, which is why they exist here instead
 * of in MediaWiki:Common.css. Kept deliberately tiny: no framework, no
 * build step, vanilla DOM APIs only.
 */
( function () {
	'use strict';

	/* 1. Eyebrow placement (see Template:Article header, .edfm-eyebrow in
	 * Common.css). MediaWiki always renders the real #firstHeading (the
	 * page's H1) before the article body in the DOM -- there is no
	 * template or CSS hook that lets wikitext content appear earlier than
	 * that. The eyebrow is authored as ordinary wikitext at the top of the
	 * article; this just moves that already-rendered, already-accessible
	 * element to sit visually above the title instead of below it. If this
	 * script doesn't run for any reason, the eyebrow still renders --
	 * directly under the title rather than above it -- so nothing breaks,
	 * this only affects placement.
	 */
	function placeEyebrow() {
		var eyebrow = document.querySelector( '.edfm-eyebrow' );
		var heading = document.getElementById( 'firstHeading' );
		if ( eyebrow && heading && heading.parentNode ) {
			heading.parentNode.insertBefore( eyebrow, heading );
		}
	}

	/* 2. "You are here" sidebar highlighting. MediaWiki's default sidebar
	 * has no built-in current-page indication -- this compares each
	 * sidebar link's URL to the current page and flags the match so
	 * Common.css can style it (see .edfm-nav-current). Wrapped in try/catch
	 * per-link only so one malformed href can't stop the rest from being
	 * checked.
	 */
	function highlightCurrentNavLink() {
		var links = document.querySelectorAll( '#mw-panel .vector-menu-content-list a[href]' );
		/* Compare pathname *and* query string, not just pathname. Most
		 * content pages use clean /wiki/Page_Name URLs where pathname alone
		 * is unambiguous, but action views (edit, history, diff, page
		 * info, ...) all route through the same /index.php pathname and
		 * are only distinguished by their query string (?action=edit vs
		 * ?action=info etc.) -- comparing pathname only would wrongly
		 * highlight every sidebar link that happens to also point at
		 * /index.php, e.g. "Page information" while actually viewing the
		 * edit-source screen.
		 */
		var here = window.location.pathname + window.location.search;
		for ( var i = 0; i < links.length; i++ ) {
			var a = links[ i ];
			try {
				var target = new URL( a.href, window.location.href );
				if ( target.pathname + target.search === here ) {
					a.parentNode.classList.add( 'edfm-nav-current' );
				}
			} catch ( e ) {
				/* malformed href on this one link -- skip it, not fatal */
			}
		}
	}

	/* 3. Jump-nav label shortening (2026-08-08, Engineer article layout
	 * pass). MediaWiki's native table of contents always mirrors a
	 * section's real ==Heading== text exactly -- there's no template or
	 * markup mechanism for a heading to carry a separate "short nav
	 * label". Article headings stay full and descriptive (e.g. "How to
	 * Receive an Invitation") since that's what reads well in the article
	 * body; this only shortens the *jump-nav tile* text afterwards, so the
	 * dense tile grid doesn't force long headings to wrap across two
	 * lines. Keyed by exact heading text, shared across all Engineer
	 * articles (same section names throughout, see Template:New engineer
	 * page) rather than being specific to any one page. Anything not in
	 * this list is left exactly as MediaWiki rendered it -- this only ever
	 * shortens, never invents nav text for a heading it doesn't recognise.
	 */
	var TOC_SHORT_LABELS = {
		'How to Discover This Engineer': 'Discovery',
		'How to Receive an Invitation': 'Invitation',
		'How to Unlock This Engineer': 'Unlock',
		'Engineer Unlock Chain': 'Unlock Chain',
		'Available Engineering': 'Engineering',
		'Experimental Effects': 'Experimentals',
		'Increasing Engineer Reputation': 'Reputation',
		'Recommended Blueprint to Pin': 'Blueprint Pinning'
	};

	function shortenTocLabels() {
		var toctexts = document.querySelectorAll( '#toc .toctext, .toc .toctext' );
		for ( var i = 0; i < toctexts.length; i++ ) {
			var el = toctexts[ i ];
			var full = el.textContent.trim();
			if ( Object.prototype.hasOwnProperty.call( TOC_SHORT_LABELS, full ) ) {
				el.textContent = TOC_SHORT_LABELS[ full ];
			}
		}
	}


	/* 4. Desktop top-bar clocks. RuneScape.wiki has a compact utility strip
	 * in the personal-toolbar tier; EDFM only needs time readouts there.
	 * UTC is synced once from MediaWiki's API curtimestamp (server-side UTC)
	 * and then advanced locally each second; local time uses the visitor's
	 * browser timezone. If the API request fails, the UTC clock falls back to
	 * the browser clock in UTC rather than leaving a blank control.
	 */
	function initTopBarClocks() {
		var personal = document.getElementById( 'p-personal' );
		if ( !personal || document.querySelector( '.edfm-topbar-clocks' ) ) {
			return;
		}

		var clocks = document.createElement( 'div' );
		clocks.className = 'edfm-topbar-clocks';
		clocks.setAttribute( 'aria-label', 'Current time' );

		var utcClock = document.createElement( 'span' );
		utcClock.className = 'edfm-topbar-clock edfm-topbar-clock-utc';
		utcClock.innerHTML = '<span class="edfm-topbar-clock-label">UTC</span> <time>--:--</time>';

		var localClock = document.createElement( 'span' );
		localClock.className = 'edfm-topbar-clock edfm-topbar-clock-local';
		localClock.innerHTML = '<span class="edfm-topbar-clock-label">Local</span> <time>--:--</time>';

		clocks.appendChild( utcClock );
		clocks.appendChild( localClock );
		personal.insertBefore( clocks, personal.firstChild );

		var utcOffset = 0;
		var utcTime = utcClock.querySelector( 'time' );
		var localTime = localClock.querySelector( 'time' );

		function twoDigits( number ) {
			return String( number ).padStart( 2, '0' );
		}
		function render() {
			var localNow = new Date();
			var utcNow = new Date( Date.now() + utcOffset );
			var utcText = twoDigits( utcNow.getUTCHours() ) + ':' + twoDigits( utcNow.getUTCMinutes() );
			var localText = twoDigits( localNow.getHours() ) + ':' + twoDigits( localNow.getMinutes() );

			utcTime.textContent = utcText;
			utcTime.setAttribute( 'datetime', utcNow.toISOString() );
			utcTime.setAttribute( 'title', 'Server time (UTC): ' + utcNow.toUTCString() );

			localTime.textContent = localText;
			localTime.setAttribute( 'datetime', localNow.toISOString() );
			localTime.setAttribute( 'title', 'Your local time: ' + localNow.toLocaleString() );
		}

		function syncServerTime() {
			if ( !window.fetch || !window.mw || !mw.util ) {
				render();
				return;
			}
			var apiUrl = mw.util.wikiScript( 'api' ) + '?action=query&format=json&curtimestamp=1';
			fetch( apiUrl, { credentials: 'same-origin' } )
				.then( function ( response ) { return response.json(); } )
				.then( function ( data ) {
					if ( data && data.curtimestamp ) {
						utcOffset = Date.parse( data.curtimestamp ) - Date.now();
					}
					render();
				} )
				.catch( render );
		}

		syncServerTime();
		window.setInterval( render, 1000 );
	}

	/* 5. Mobile app shell. Vector legacy was built for desktop; this adds a
	 * small progressive-enhancement shell on phones: hamburger drawer using
	 * the real #mw-panel links, a search button that reveals/focuses the
	 * existing MediaWiki search input, ESC/scrim close behavior, and ARIA
	 * state updates. With JS off the CSS fallback remains the existing stacked
	 * Vector mobile layout.
	 */
	function initMobileChrome() {
		var navigation = document.getElementById( 'mw-navigation' );
		var panel = document.getElementById( 'mw-panel' );
		var searchInput = document.getElementById( 'searchInput' );
		if ( !navigation || !panel || document.querySelector( '.edfm-mobile-appbar' ) ) {
			return;
		}

		var appbar = document.createElement( 'div' );
		appbar.className = 'edfm-mobile-appbar';

		var menuButton = document.createElement( 'button' );
		menuButton.type = 'button';
		menuButton.className = 'edfm-mobile-menu-button';
		menuButton.setAttribute( 'aria-label', 'Open navigation menu' );
		menuButton.setAttribute( 'aria-controls', 'mw-panel' );
		menuButton.setAttribute( 'aria-expanded', 'false' );

		var brand = document.createElement( 'a' );
		brand.className = 'edfm-mobile-brand';
		brand.href = mw && mw.util ? mw.util.getUrl( 'Main Page' ) : '/wiki/Main_Page';
		brand.textContent = 'Field Manual';

		var searchButton = document.createElement( 'button' );
		searchButton.type = 'button';
		searchButton.className = 'edfm-mobile-search-button';
		searchButton.setAttribute( 'aria-label', 'Search the Field Manual' );
		searchButton.setAttribute( 'aria-expanded', 'false' );

		appbar.appendChild( menuButton );
		appbar.appendChild( brand );
		appbar.appendChild( searchButton );
		navigation.insertBefore( appbar, navigation.firstChild );

		var closeButton = document.createElement( 'button' );
		closeButton.type = 'button';
		closeButton.className = 'edfm-mobile-close-button';
		closeButton.setAttribute( 'aria-label', 'Close navigation menu' );
		panel.insertBefore( closeButton, panel.firstChild );

		var scrim = document.createElement( 'button' );
		scrim.type = 'button';
		scrim.className = 'edfm-mobile-scrim';
		scrim.setAttribute( 'aria-label', 'Close navigation menu' );
		document.body.appendChild( scrim );

		function setMenuOpen( open ) {
			document.body.classList.toggle( 'edfm-mobile-menu-open', open );
			menuButton.setAttribute( 'aria-expanded', open ? 'true' : 'false' );
		}
		function setSearchOpen( open ) {
			document.body.classList.toggle( 'edfm-mobile-search-open', open );
			searchButton.setAttribute( 'aria-expanded', open ? 'true' : 'false' );
			if ( open && searchInput ) {
				window.setTimeout( function () { searchInput.focus(); }, 0 );
			}
		}

		menuButton.addEventListener( 'click', function () { setMenuOpen( true ); } );
		closeButton.addEventListener( 'click', function () { setMenuOpen( false ); } );
		scrim.addEventListener( 'click', function () { setMenuOpen( false ); } );
		searchButton.addEventListener( 'click', function () {
			setSearchOpen( !document.body.classList.contains( 'edfm-mobile-search-open' ) );
		} );
		panel.addEventListener( 'click', function ( event ) {
			if ( event.target && event.target.closest && event.target.closest( 'a' ) ) {
				setMenuOpen( false );
			}
		} );
		document.addEventListener( 'keydown', function ( event ) {
			if ( event.key === 'Escape' ) {
				setMenuOpen( false );
				setSearchOpen( false );
			}
		} );
	}

	if ( document.readyState === 'loading' ) {
		document.addEventListener( 'DOMContentLoaded', function () {
			placeEyebrow();
			highlightCurrentNavLink();
			shortenTocLabels();
			initTopBarClocks();
			initMobileChrome();
		} );
	} else {
		placeEyebrow();
		highlightCurrentNavLink();
		shortenTocLabels();
		initTopBarClocks();
		initMobileChrome();
	}
}() );