User:Nardog/dark-mode-toggle.js

/** * Enables or disables the dark-mode gadget. * * Authors: User:SD0001, User:Nardog */

// 'Dark mode' and 'Light mode' messages must match the ::before content in // MediaWiki:Gadget-dark-mode-toggle-pagestyles.css and MediaWiki:Gadget-dark-mode.css, respectively. // Don't overwrite existing messages, if already set on a foreign wiki prior to loading this file if (!mw.messages.get('darkmode-turn-on-label')) { mw.messages.set({		'darkmode-turn-on-label': 'Dark mode',		'darkmode-turn-on-tooltip': 'Turn dark mode on',		'darkmode-turn-off-label': 'Light mode',		'darkmode-turn-off-tooltip': 'Turn dark mode off',	}); }

var isOn = mw.loader.getState('ext.gadget.dark-mode') === 'ready';

var broadcastChannel = new BroadcastChannel('gadget-dark-mode');

function setThemeColor { // Update the theme-color used by some browsers for coloration of the tab headers and surrounding UI $('meta[name="theme-color"]').attr('content', isOn ? '#000000' : '#eaecf0'); }

function setHtmlClass { // CSS class for externally styling elements in dark mode via TemplateStyles (or CSS from other gadgets or common.css) // A brief flash of the original styles will occur, so this is only suitable for style changes for which flashes are tolerable. // For others, update Gadget-dark-mode.css directly which is loaded without FOUCs $(document.documentElement).toggleClass('client-dark-mode', isOn); }

function vectorStickyCallback { mw.hook('vector.page_title_scroll').remove(vectorStickyCallback); if (document.getElementById('pt-darkmode-sticky-header')) return; makePortletLink('p-personal-sticky-header', 'pt-darkmode-sticky-header', '#pt-watchlist-sticky-header'); }

function addPortlets { makePortletLink('p-personal', 'pt-darkmode', '#pt-watchlist');

if (mw.config.get('skin') === 'vector-2022') { mw.hook('vector.page_title_scroll').add(vectorStickyCallback); } }

function getMsg(suffix) { var key = 'darkmode-turn-' + (isOn ? 'off' : 'on') + '-' + suffix; return mw.msg(key); }

function makePortletLink(portletId, portletLinkId, nextnode) { var label = getMsg('label'); var tooltip = getMsg('tooltip'); $(mw.util.addPortletLink(portletId, '#', label, portletLinkId, tooltip, '', nextnode)) .children.on('click', function (e) {			e.preventDefault;			toggleMode;		}); }

function togglePortlets { var labelSelector; switch (mw.config.get('skin')) { case 'vector': case 'vector-2022': case 'minerva': labelSelector = '#pt-darkmode span:not(:empty), #pt-darkmode-sticky-header span:not(:empty)'; break; default: labelSelector = '#pt-darkmode a'; }	$(labelSelector).text(getMsg('label')); $('#pt-darkmode a, #pt-darkmode-sticky-header a') .attr('title', getMsg('tooltip')); }

function actuallyToggleDarkMode { // Modify the element on the page to include/exclude dark-mode styles // We can't use mw.loader as it doesn't work both ways (see talk page) var scriptPath = mw.util.wikiScript('load'); var $gadgetsLink = $('link[rel="stylesheet"][href^="' + scriptPath + '?"][href*="ext.gadget."]'); if ($gadgetsLink.length) { var uri = new mw.Uri($gadgetsLink.prop('href')); if (isOn) { uri.query.modules += ',dark-mode'; } else { if (uri.query.modules === 'ext.gadget.dark-mode') { // dark-mode is the only module in this link $gadgetsLink.remove; return; }			uri.query.modules = uri.query.modules .replace('ext.gadget.dark-mode,', 'ext.gadget.') // dark-mode is first in the gadget list .replace(/,dark-mode(,|$)/, '$1'); // dark-mode is in middle or end of the list }		$gadgetsLink.prop('href', uri.getRelativePath); } else { // No gadget-containing styles are enabled $(' ').attr({			rel: 'stylesheet',			href: scriptPath + '?lang=' + mw.config.get('wgUserLanguage') +				'&modules=ext.gadget.dark-mode&only=styles&skin=' + mw.config.get('skin')		}).appendTo(document.head); } }

function savePreference { new mw.Api.saveOption('gadget-dark-mode', isOn ? '1' : '0'); }

function savePreferenceLocally { mw.user.options.set('gadget-dark-mode', Number(isOn));

// In case the user navigates to another page too quickly mw.storage.session.set('dark-mode-toggled', isOn ? '1' : '0'); }

function notifyOtherTabs { // Broadcast state change to other tabs broadcastChannel.postMessage(isOn); }

function toggleMode(offline) { isOn = !isOn; if (!offline) { savePreference; notifyOtherTabs; }	setHtmlClass; setThemeColor; savePreferenceLocally; togglePortlets; actuallyToggleDarkMode; }

function toggleBasedOnSystemColourScheme { var systemSchemeNow = matchMedia('(prefers-color-scheme: dark)').matches; var systemSchemeLast = mw.storage.get('dark-mode-system-scheme') === '1';

if (systemSchemeNow !== systemSchemeLast) { if (systemSchemeNow !== isOn) { toggleMode; }		mw.requestIdleCallback(function {			mw.storage.set('dark-mode-system-scheme', systemSchemeNow ? '1' : '0');		});	} }

$.when($.ready, mw.loader.using(['mediawiki.util', 'mediawiki.api', 'mediawiki.Uri', 'mediawiki.storage'])).then(function {	setHtmlClass;	setThemeColor;	addPortlets;

// Recover state if the navigation was too quick var storageState = mw.storage.session.get('dark-mode-toggled'); if (storageState && Number(storageState) !== Number(isOn)) { toggleMode(true); }

// Listen to dark mode state change made on other tabs broadcastChannel.onmessage = function (msg) { if (msg.data !== isOn) { toggleMode(true); }	};

if (window.wpDarkModeAutoToggle) { toggleBasedOnSystemColourScheme;

// If system colour scheme changes while user is viewing, toggle immediately var mediaQuery = matchMedia('(prefers-color-scheme: dark)'); if (mediaQuery.addEventListener) { mediaQuery.addEventListener('change', toggleBasedOnSystemColourScheme); } else if (mediaQuery.addListener) { // Safari 13 and older mediaQuery.addListener(toggleBasedOnSystemColourScheme); }	} });