User:Michael/dark-mode-toggle.js
From McGough's Recipes
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/**
* Enables or disables the dark mode gadget.
*/
mw.messages.set({
'darkmode-turn-on-label': 'Dark mode',
'darkmode-turn-on-tooltip': 'Turn on dark mode',
'darkmode-turn-off-label': 'Light mode',
'darkmode-turn-off-tooltip': 'Turn off dark mode',
'darkmode-turning-on': 'Enabling dark mode ...',
'darkmode-turning-off': 'Disabling dark mode ...'
});
$.when($.ready, mw.loader.using(['mediawiki.util', 'mediawiki.api'])).then(function() {
var inDarkMode = !!mw.user.options.get('gadget-dark-mode');
var linkText = inDarkMode ? mw.msg('darkmode-turn-off-label') : mw.msg('darkmode-turn-on-label');
mw.util.addPortletLink('p-cactions', '#', linkText, 'pt-darkmode', inDarkMode ? mw.msg('darkmode-turn-off-tooltip') : mw.msg('darkmode-turn-on-tooltip'), 'np');
$('#pt-darkmode').on('click', function(e) {
e.preventDefault();
mw.notify(inDarkMode ? mw.msg('darkmode-turning-off') : mw.msg('darkmode-turning-on'));
new mw.Api().saveOption('gadget-dark-mode', inDarkMode ? '0' : '1').then(function() {
location.reload();
});
});
});