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

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var collapsibleTabs = require( '../skins.vector.legacy.js/collapsibleTabs.js' ),
vector = require( '../skins.vector.legacy.js/vector.js' ),
languageButton = require( './languageButton.js' ),
initSearchLoader = require( './searchLoader.js' ).initSearchLoader,
dropdownMenus = require( './dropdownMenus.js' ),
sidebar = require( './sidebar.js' );
/**
* 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
* // no-JS 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 ) {
var now = mw.now();
// 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
}
} );
enableCssAnimations( window.document );
collapsibleTabs.init();
sidebar.init( window );
dropdownMenus();
$( vector.init );
initSearchLoader( document );
languageButton();
}
main( window );