MediaWiki:Gadget-UTCLiveClock.js

/** * Warning! Global gadget file! * * This gadget adds a clock in the personal toolbar that shows the current time * in UTC (or a different timezone of your choosing), and also provides a link * to purge the current page. * * Revision: July 2020 * Source: https://www.mediawiki.org/wiki/MediaWiki:Gadget-UTCLiveClock.js * * Installation: * * 1. Copy the JS page at https://www.mediawiki.org/wiki/MediaWiki:Gadget-UTCLiveClock.js * to the page MediaWiki:Gadget-UTCLiveClock.js on your wiki. * * 2. Copy the CSS page at https://www.mediawiki.org/wiki/MediaWiki:Gadget-UTCLiveClock.css * to the page MediaWiki:Gadget-UTCLiveClock.css on your wiki. * * 3. Copy the CSS page at https://www.mediawiki.org/wiki/MediaWiki:Gadget-UTCLiveClock-pagestyles.css * to the page MediaWiki:Gadget-UTCLiveClock-pagestyles.css on your wiki. * * 4. Add a description of the gadget to the page MediaWiki:Gadget-UTCLiveClock * on your wiki. You can use https://www.mediawiki.org/wiki/MediaWiki:Gadget-UTCLiveClock * as a template. * * 5. Add the following code to your wiki's MediaWiki:Gadgets-definition: * *     * UTCLiveClock[ResourceLoader|type=general|dependencies=mediawiki.util,mediawiki.api|peers=UTCLiveClock-pagestyles]|UTCLiveClock.js|UTCLiveClock.css *    * UTCLiveClock-pagestyles[hidden|skins=vector,monobook]|UTCLiveClock-pagestyles.css * *  * To set the timezone used to one other than UTC, set window.LiveClockTimeZone to * the desired timezone. For example, adding the following to your common.js *     window.LiveClockTimeZone = 'America/Los_Angeles'; * would result in the local time in Los Angeles being shown. See * w:List of tz database time zones for valid options (use the TZ database name). */ /*global mw, $ */ mw.loader.using( ['mediawiki.util', 'mediawiki.api'] ).then( function {

function padWithZeroes( num ) { // Pad a number with zeroes. The number must be an integer where // 0 <= num < 100. return num < 10 ? '0' + num.toString : num.toString; }

function showTime( $target ) { var now = new Date; var timezone = window.LiveClockTimeZone || 'UTC';

// Set the time. var hh, mm, ss; if ( timezone === "UTC" ) { hh = now.getUTCHours; mm = now.getUTCMinutes; ss = now.getUTCSeconds; } else if ( timezone === "local" ) { hh = now.getHours; mm = now.getMinutes; ss = now.getSeconds; } else { var newNow; try { newNow = new Date(				now.toLocaleString( "en-US", { timeZone: timezone } )			);			hh = newNow.getHours; mm = newNow.getMinutes; ss = newNow.getSeconds; } catch ( err ) { console.log( "LiveClock - error creating Date object with timezone '" + timezone + "': " + err.name); timezone = "UTC"; newNow = now; hh = now.getUTCHours; mm = now.getUTCMinutes; ss = now.getUTCSeconds; }	}	var time = padWithZeroes( hh ) + ':' + padWithZeroes( mm ) + ':' + padWithZeroes( ss ); $target.text( time );

// Schedule the next time change. // 	// We schedule the change for 100 ms _after_ the next clock tick. The delay // from setTimeout is not precise, and if we aim exactly for the tick, there // is a chance that the function will run slightly before it. If this // happens, we will display the same time for two seconds in a row - not // good. By scheduling 100 ms after the tick, we will always be about 100 ms // late, but we are also very likely to display a new time every second. var ms = now.getUTCMilliseconds; setTimeout( function {		showTime( $target );	}, 1100 - ms ); }

function liveClock { // Set CSS styles. We do this here instead of on the CSS page because some // wikis load this page directly, without loading the accompanying CSS. mw.util.addCSS( '#utcdate a { font-weight:bolder; font-size:120%; }' );

// Reset whitespace that was set in the peer CSS gadget; this prevents the // effect of the p-personal menu jumping to the left when the JavaScript // loads. $( '.client-js > body.skin-vector #p-personal ul' ).css( 'margin-right', 'initial' ); $( '.client-js > body.skin-monobook #p-personal ul' ).css( 'margin-right', 'initial' );

// Add the portlet link. var node = mw.util.addPortletLink(		// Sometimes the p-personal menu is a dropdown e.g. vector-2022 skin		document.getElementById( 'p-personal-more' ) ? 'p-personal-more' : 'p-personal',		mw.util.getUrl( null, { action: 'purge' } ),		'',		'utcdate'	); if ( !node ) { return; }

// Purge the page when the clock is clicked. We have to do this through the // API, as purge URLs now make people click through a confirmation screen. $( node ).on( 'click', function ( e ) {		new mw.Api.post( { action: 'purge', titles: mw.config.get( 'wgPageName' ) } ).then( function { location.reload; }, function { mw.notify( 'Purge failed', { type: 'error' } ); } );		e.preventDefault;	} );

// Show the clock. showTime( $( node ).find( 'a:first' ) ); }

$( liveClock ); } );