mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/RelatedArticles
synced 2024-12-03 20:36:50 +00:00
f748c5907e
Using MakeGlobalVariablesScript hook will add config variables to the HTML meaning cached HTML will not be able to access it leaving it as undefined. This will mess up any existing caching. Additional changes: Because I'm paranoid, make sure that value is never undefined. Bug: T170648 Change-Id: Icb8e34104c57b1e69b7e035ef89d5b4c3371132f
94 lines
2.8 KiB
JavaScript
94 lines
2.8 KiB
JavaScript
( function ( $, mw ) {
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var relatedPages = new mw.relatedPages.RelatedPagesGateway(
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new mw.Api(),
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mw.config.get( 'wgPageName' ),
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mw.config.get( 'wgRelatedArticles' ),
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mw.config.get( 'wgRelatedArticlesUseCirrusSearch' ),
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mw.config.get( 'wgRelatedArticlesOnlyUseCirrusSearch' )
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),
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// Make sure this is never undefined as I'm paranoid
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LIMIT = mw.config.get( 'wgRelatedArticlesCardLimit', 3 ),
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debouncedLoad = $.debounce( 100, function () {
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loadRelatedArticles(); // eslint-disable-line
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} ),
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$window = $( window ),
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shouldShowReadMore;
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/**
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* Gets whether the feature is enabled for the user.
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*
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* The user's session ID is used to determine the eligibility for
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* RelatedArticles functionality, based on the value of
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* `$wgRelatedArticlesEnabledBucketSize`. The result of the function will be
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* the same for the duration of their session.
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*
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* @return {boolean}
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*/
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function isEnabledForCurrentUser() {
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var bucket,
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bucketSize = mw.config.get( 'wgRelatedArticlesEnabledBucketSize', 1 );
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bucket = mw.experiments.getBucket( {
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name: 'ext.relatedArticles.visibility',
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enabled: true,
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buckets: {
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control: 1 - bucketSize,
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A: bucketSize
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}
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}, mw.user.sessionId() );
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return bucket === 'A';
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}
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/**
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* Load related articles when the user scrolls past half of the window height.
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*
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* @ignore
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*/
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function loadRelatedArticles() {
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var readMore = $( '.read-more-container' ).get( 0 ),
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scrollThreshold = $window.height() * 2;
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if ( mw.viewport.isElementCloseToViewport( readMore, scrollThreshold ) ) {
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$.when(
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// Note we load dependencies here rather than ResourceLoader
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// to avoid PHP exceptions when Cards not installed
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// which should never happen given the if statement.
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mw.loader.using( [
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'ext.relatedArticles.cards',
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'ext.relatedArticles.readMore'
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] ),
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relatedPages.getForCurrentPage( LIMIT )
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).done( function ( _, pages ) {
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if ( pages.length ) {
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mw.track( 'ext.relatedArticles.init', pages );
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} else {
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readMore.remove();
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}
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} );
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// detach handler to stop subsequent loads on scroll
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$window.off( 'scroll', debouncedLoad );
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}
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}
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shouldShowReadMore = isEnabledForCurrentUser();
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if ( shouldShowReadMore ) {
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// Add container to DOM for checking distance on scroll
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// If a skin has marked up a footer content area prepend it there
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if ( $( '.footer-content' ).length ) {
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$( '<div class="read-more-container" />' ).prependTo( '.footer-content' );
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} else {
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$( '<div class="read-more-container post-content" />' )
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.insertAfter( '#content' );
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}
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// try related articles load on scroll
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$window.on( 'scroll', debouncedLoad );
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// try an initial load, in case of no scroll
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loadRelatedArticles();
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}
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mw.track( 'ext.relatedArticles.logEnabled', { isEnabled: shouldShowReadMore } );
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}( jQuery, mediaWiki ) );
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