mediawiki-skins-Vector/resources/skins.vector.js/skin.js

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JavaScript
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const languageButton = require( './languageButton.js' ),
limitedWidthToggle = require( './limitedWidthToggle.js' ),
pinnableElement = require( './pinnableElement.js' ),
searchToggle = require( './searchToggle.js' ),
echo = require( './echo.js' ),
initExperiment = require( './AB.js' ),
ABTestConfig = require( /** @type {string} */ ( './activeABTest.json' ) ),
initSearchLoader = require( './searchLoader.js' ).initSearchLoader,
portletsManager = require( './portlets.js' ),
dropdownMenus = require( './dropdownMenus.js' ).dropdownMenus,
watchstar = require( './watchstar.js' ).init,
setupIntersectionObservers = require( './setupIntersectionObservers.js' ),
menuTabs = require( './menuTabs.js' ),
legacyMessageBoxStyles = require( './legacyMessageBoxStyles.js' ),
teleportTarget = /** @type {HTMLElement} */require( /** @type {string} */ ( 'mediawiki.page.ready' ) ).teleportTarget;
/**
* Wait for first paint before calling this function. That's its whole purpose.
*
* Some CSS animations and transitions are "disabled" by default as a workaround to this old Chrome
* bug, https://bugs.chromium.org/p/chromium/issues/detail?id=332189, which otherwise causes them to
* render in their terminal state on page load. By adding the `vector-animations-ready` class to the
* `html` root element **after** first paint, the animation selectors suddenly match causing the
* animations to become "enabled" when they will work properly. A similar pattern is used in Minerva
* (see T234570#5779890, T246419).
*
* Example usage in Less:
*
* ```less
* .foo {
* color: #f00;
* transform: translateX( -100% );
* }
*
* // This transition will be disabled initially for JavaScript users. It will never be enabled for
* // non-JavaScript users.
* .vector-animations-ready .foo {
* transition: transform 100ms ease-out;
* }
* ```
*
* @param {Document} document
* @return {void}
*/
function enableCssAnimations( document ) {
document.documentElement.classList.add( 'vector-animations-ready' );
}
/**
* @param {Window} window
* @return {void}
*/
function main( window ) {
enableCssAnimations( window.document );
initSearchLoader( document );
languageButton();
echo();
portletsManager.main();
watchstar();
limitedWidthToggle();
// Initialize the search toggle for the main header only. The sticky header
// toggle is initialized after Codex search loads.
const searchToggleElement = document.querySelector( '.mw-header .search-toggle' );
if ( searchToggleElement ) {
searchToggle( searchToggleElement );
}
pinnableElement.initPinnableElement();
// Initializes the TOC and sticky header, behaviour of which depend on scroll behaviour.
setupIntersectionObservers.main();
// Apply body styles to teleported elements
teleportTarget.classList.add( 'vector-body' );
// Load client preferences
const clientPreferenceSelector = '#vector-client-prefs';
const clientPreferenceExists = document.querySelectorAll( clientPreferenceSelector ).length > 0;
if ( clientPreferenceExists ) {
mw.loader.using( [
'skins.vector.clientPreferences',
'skins.vector.search.codex.styles',
'skins.vector.search.codex.scripts'
] ).then( () => {
const clientPreferences = require( /** @type {string} */ ( 'skins.vector.clientPreferences' ) );
const clientPreferenceConfig = ( require( './clientPreferences.json' ) );
// Can be removed once wgVectorNightMode is removed.
if ( document.documentElement.classList.contains( 'vector-feature-night-mode-disabled' ) ) {
// @ts-ignore issues relating to delete operator are not relevant here.
delete clientPreferenceConfig[ 'skin-theme' ];
}
clientPreferences.render( clientPreferenceSelector, clientPreferenceConfig );
} );
}
dropdownMenus();
// menuTabs should follow `dropdownMenus` as that can move menu items from a
// tab menu to a dropdown.
menuTabs();
}
/**
* @param {Window} window
* @return {void}
*/
function init( window ) {
const now = mw.now();
legacyMessageBoxStyles();
// This is the earliest time we can run JS for users (and bucket anonymous
// users for A/B tests).
// Where the browser supports it, for a 10% sample of users
// we record a value to give us a sense of the expected delay in running A/B tests or
// disabling JS features. This will inform us on various things including what to expect
// with regards to delay while running A/B tests to anonymous users.
// When EventLogging is not available this will reject.
// This code can be removed by the end of the Desktop improvements project.
// https://www.mediawiki.org/wiki/Desktop_improvements
mw.loader.using( 'ext.eventLogging' ).then( function () {
if (
mw.eventLog &&
mw.eventLog.eventInSample( 100 /* 1 in 100 */ ) &&
window.performance &&
window.performance.timing &&
window.performance.timing.navigationStart
) {
mw.track( 'timing.Vector.ready', now - window.performance.timing.navigationStart ); // milliseconds
}
} );
}
init( window );
if ( ABTestConfig.enabled && !mw.user.isAnon() ) {
initExperiment( ABTestConfig, String( mw.user.getId() ) );
}
if ( document.readyState === 'interactive' || document.readyState === 'complete' ) {
main( window );
} else {
// This is needed when document.readyState === 'loading'.
document.addEventListener( 'DOMContentLoaded', function () {
main( window );
} );
}
// Provider of skins.vector.js module:
/**
* skins.vector.js
* @stable for use inside WikimediaEvents ONLY.
*/
module.exports = { pinnableElement };