mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/DiscussionTools
synced 2024-11-15 03:44:02 +00:00
5e2b209314
Remove hacks marked as 'TEMPORARY' now that we consider the HTML to be stable enough. This will avoid issues with HTML/CSS being out of sync in future deployments. Bug: T313560 Change-Id: Ie00ff38a422f241add19d500adaf22dfeee10e8c
616 lines
21 KiB
PHP
616 lines
21 KiB
PHP
<?php
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namespace MediaWiki\Extension\DiscussionTools;
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use Html;
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use Language;
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use MediaWiki\Extension\DiscussionTools\Hooks\HookUtils;
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use MediaWiki\Extension\DiscussionTools\ThreadItem\ContentCommentItem;
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use MediaWiki\Extension\DiscussionTools\ThreadItem\ContentHeadingItem;
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use MediaWiki\MediaWikiServices;
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use MediaWiki\User\UserIdentity;
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use MWExceptionHandler;
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use MWTimestamp;
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use ParserOutput;
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use Throwable;
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use Title;
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use WebRequest;
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use Wikimedia\Assert\Assert;
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use Wikimedia\Parsoid\DOM\Element;
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use Wikimedia\Parsoid\Utils\DOMCompat;
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use Wikimedia\Parsoid\Utils\DOMUtils;
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use Wikimedia\Parsoid\Wt2Html\XMLSerializer;
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class CommentFormatter {
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// List of features which, when enabled, cause the comment formatter to run
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public const USE_WITH_FEATURES = [
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HookUtils::REPLYTOOL,
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HookUtils::TOPICSUBSCRIPTION,
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HookUtils::VISUALENHANCEMENTS
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];
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/**
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* Get a comment parser object for a DOM element
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*
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* This method exists so it can mocked in tests.
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*
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* @return CommentParser
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*/
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protected static function getParser(): CommentParser {
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return MediaWikiServices::getInstance()->getService( 'DiscussionTools.CommentParser' );
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}
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/**
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* Add discussion tools to some HTML
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*
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* @param string &$text Parser text output (modified by reference)
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* @param ParserOutput $pout ParserOutput object for metadata, e.g. parser limit report
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* @param Title $title
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*/
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public static function addDiscussionTools( string &$text, ParserOutput $pout, Title $title ): void {
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$start = microtime( true );
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$requestId = null;
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try {
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$text = static::addDiscussionToolsInternal( $text, $title );
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} catch ( Throwable $e ) {
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// Catch errors, so that they don't cause the entire page to not display.
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// Log it and report the request ID to make it easier to find in the logs.
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MWExceptionHandler::logException( $e );
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$requestId = WebRequest::getRequestId();
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}
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$duration = microtime( true ) - $start;
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$stats = MediaWikiServices::getInstance()->getStatsdDataFactory();
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$stats->timing( 'discussiontools.addReplyLinks', $duration * 1000 );
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// How long this method took, in seconds
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$pout->setLimitReportData(
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'discussiontools-limitreport-timeusage',
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sprintf( '%.3f', $duration )
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);
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if ( $requestId ) {
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// Request ID where errors were logged (only if an error occurred)
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$pout->setLimitReportData(
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'discussiontools-limitreport-errorreqid',
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$requestId
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);
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}
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}
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/**
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* Add a topic container around a heading element
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*
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* @param Element $headingElement Heading element
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* @param ContentHeadingItem|null $headingItem Heading item
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*/
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protected static function addTopicContainer( Element $headingElement, ?ContentHeadingItem $headingItem = null ) {
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$doc = $headingElement->ownerDocument;
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DOMCompat::getClassList( $headingElement )->add( 'ext-discussiontools-init-section' );
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if ( !$headingItem ) {
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return;
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}
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$headingNameEscaped = htmlspecialchars( $headingItem->getName(), ENT_NOQUOTES );
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// Replaced in ::postprocessTopicSubscription() as the text depends on user state
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$subscribeLink = $doc->createComment( '__DTSUBSCRIBELINK__' . $headingNameEscaped );
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if ( $headingItem->isSubscribable() ) {
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$headingElement->insertBefore( $subscribeLink, $headingElement->firstChild );
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}
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$subscribeButton = $doc->createComment( '__DTSUBSCRIBEBUTTONDESKTOP__' . $headingNameEscaped );
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$headingElement->insertBefore( $subscribeButton, $headingElement->firstChild );
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// Visual enhancements: topic containers
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$summary = $headingItem->getThreadSummary();
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if ( $summary['commentCount'] ) {
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$latestReplyJSON = static::getJsonForCommentMarker( $summary['latestReply'] );
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$latestReply = $doc->createComment(
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// Timestamp output varies by user timezone, so is formatted later
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'__DTLATESTCOMMENTTHREAD__' . htmlspecialchars( $latestReplyJSON, ENT_NOQUOTES ) . '__'
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);
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$commentCount = $doc->createComment(
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'__DTCOMMENTCOUNT__' . $summary['commentCount'] . '__'
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);
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$authorCount = $doc->createComment(
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'__DTAUTHORCOUNT__' . count( $summary['authors'] ) . '__'
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);
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// Topic subscriptions
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$subscribeButton = $doc->createComment( '__DTSUBSCRIBEBUTTONMOBILE__' . $headingNameEscaped );
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$ellipsisButton = $doc->createComment( '__DTELLIPSISBUTTON__' );
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$metadata = $doc->createElement( 'div' );
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$metadata->setAttribute(
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'class',
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'ext-discussiontools-init-section-metadata'
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);
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$metadata->appendChild( $latestReply );
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$metadata->appendChild( $commentCount );
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$metadata->appendChild( $authorCount );
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$actions = $doc->createElement( 'div' );
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$actions->setAttribute(
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'class',
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'ext-discussiontools-init-section-actions'
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);
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if ( $headingItem->isSubscribable() ) {
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$actions->appendChild( $subscribeButton );
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}
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$bar = $doc->createElement( 'div' );
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$bar->setAttribute(
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'class',
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'ext-discussiontools-init-section-bar'
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);
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$bar->appendChild( $metadata );
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$bar->appendChild( $actions );
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$headingElement->appendChild( $ellipsisButton );
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$headingElement->appendChild( $bar );
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}
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}
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/**
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* Add discussion tools to some HTML
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*
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* @param string $html HTML
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* @param Title $title
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* @return string HTML with discussion tools
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*/
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protected static function addDiscussionToolsInternal( string $html, Title $title ): string {
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// The output of this method can end up in the HTTP cache (Varnish). Avoid changing it;
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// and when doing so, ensure that frontend code can handle both the old and new outputs.
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// See controller#init in JS.
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$doc = DOMUtils::parseHTML( $html );
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$container = DOMCompat::getBody( $doc );
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$threadItemSet = static::getParser()->parse( $container, $title->getTitleValue() );
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$threadItems = $threadItemSet->getThreadItems();
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// Iterate in reverse order, because adding the range markers for a thread item
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// can invalidate the ranges of subsequent thread items (T298096)
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foreach ( array_reverse( $threadItems ) as $threadItem ) {
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// TODO: Consider not attaching JSON data to the DOM.
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// Create a dummy node to attach data to.
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if ( $threadItem instanceof ContentHeadingItem && $threadItem->isPlaceholderHeading() ) {
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$node = $doc->createElement( 'span' );
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$container->insertBefore( $node, $container->firstChild );
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$threadItem->setRange( new ImmutableRange( $node, 0, $node, 0 ) );
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}
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// Add start and end markers to range
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$id = $threadItem->getId();
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$range = $threadItem->getRange();
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$startMarker = $doc->createElement( 'span' );
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$startMarker->setAttribute( 'data-mw-comment-start', '' );
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$startMarker->setAttribute( 'id', $id );
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$endMarker = $doc->createElement( 'span' );
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$endMarker->setAttribute( 'data-mw-comment-end', $id );
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// Extend the range if the start or end is inside an element which can't have element children.
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// (There may be other problematic elements... but this seems like a good start.)
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while ( CommentUtils::cantHaveElementChildren( $range->startContainer ) ) {
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$range = $range->setStart(
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$range->startContainer->parentNode,
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CommentUtils::childIndexOf( $range->startContainer )
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);
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}
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while ( CommentUtils::cantHaveElementChildren( $range->endContainer ) ) {
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$range = $range->setEnd(
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$range->endContainer->parentNode,
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CommentUtils::childIndexOf( $range->endContainer ) + 1
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);
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}
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$range->setStart( $range->endContainer, $range->endOffset )->insertNode( $endMarker );
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$range->insertNode( $startMarker );
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$itemData = $threadItem->jsonSerialize();
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$itemJSON = json_encode( $itemData );
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if ( $threadItem instanceof ContentHeadingItem ) {
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// <span class="mw-headline" …>, or <hN …> in Parsoid HTML
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$headline = $threadItem->getRange()->endContainer;
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Assert::precondition( $headline instanceof Element, 'HeadingItem refers to an element node' );
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$headline->setAttribute( 'data-mw-comment', $itemJSON );
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if ( $threadItem->getHeadingLevel() === 2 ) {
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$headingElement = CommentUtils::closestElement( $headline, [ 'h2' ] );
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if ( $headingElement ) {
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static::addTopicContainer( $headingElement, $threadItem );
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}
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}
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} elseif ( $threadItem instanceof ContentCommentItem ) {
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$replyLinkButtons = $doc->createElement( 'span' );
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$replyLinkButtons->setAttribute( 'class', 'ext-discussiontools-init-replylink-buttons' );
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// Reply
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$replyLink = $doc->createElement( 'a' );
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$replyLink->setAttribute( 'class', 'ext-discussiontools-init-replylink-reply' );
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$replyLink->setAttribute( 'role', 'button' );
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$replyLink->setAttribute( 'tabindex', '0' );
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$replyLink->setAttribute( 'data-mw-comment', $itemJSON );
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// Set empty 'href' to avoid a:not([href]) selector in MobileFrontend
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$replyLink->setAttribute( 'href', '' );
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// Replaced in ::postprocessReplyTool() as the label depends on user language
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$replyText = $doc->createComment( '__DTREPLY__' );
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$replyLink->appendChild( $replyText );
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$bracket = $doc->createElement( 'span' );
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$bracket->setAttribute( 'class', 'ext-discussiontools-init-replylink-bracket' );
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$bracketOpen = $bracket->cloneNode( false );
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$bracketClose = $bracket->cloneNode( false );
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// Replaced in ::postprocessReplyTool() to avoid displaying empty brackets in various
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// contexts where parser output is used (API T292345, search T294168, action=render)
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$bracketOpen->appendChild( $doc->createComment( '__DTREPLYBRACKETOPEN__' ) );
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$bracketClose->appendChild( $doc->createComment( '__DTREPLYBRACKETCLOSE__' ) );
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$replyLinkButtons->appendChild( $bracketOpen );
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$replyLinkButtons->appendChild( $replyLink );
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$replyLinkButtons->appendChild( $bracketClose );
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CommentModifier::addReplyLink( $threadItem, $replyLinkButtons );
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}
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}
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// Enhance other <h2>'s which aren't part of a thread
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$headings = DOMCompat::querySelectorAll( $container, 'h2' );
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foreach ( $headings as $headingElement ) {
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static::addTopicContainer( $headingElement );
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}
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if ( count( $threadItems ) === 0 ) {
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$container->appendChild( $doc->createComment( '__DTEMPTYTALKPAGE__' ) );
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}
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// Like DOMCompat::getInnerHTML(), but disable 'smartQuote' for compatibility with
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// ParserOutput::EDITSECTION_REGEX matching 'mw:editsection' tags (T274709)
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return XMLSerializer::serialize( $container, [ 'innerXML' => true, 'smartQuote' => false ] )['html'];
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}
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/**
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* Replace placeholders for all interactive tools with nothing. This is intended for cases where
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* interaction is unexpected, e.g. reply links while previewing an edit.
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*
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* @param string $text
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* @return string
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*/
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public static function removeInteractiveTools( string $text ) {
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$text = strtr( $text, [
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'<!--__DTREPLY__-->' => '',
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'<!--__DTREPLYBRACKETOPEN__-->' => '',
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'<!--__DTREPLYBRACKETCLOSE__-->' => '',
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'<!--__DTELLIPSISBUTTON__-->' => '',
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'<!--__DTEMPTYTALKPAGE__-->' => '',
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] );
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$text = preg_replace( '/<!--__DTSUBSCRIBE__(.*?)-->/', '', $text );
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$text = preg_replace( '/<!--__DTSUBSCRIBELINK__(.*?)-->/', '', $text );
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// (DESKTOP|MOBILE)? can be made unconditional once the un-suffixed buttons have cleared from the cache
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$text = preg_replace( '/<!--__DTSUBSCRIBEBUTTON(DESKTOP|MOBILE)?__(.*?)-->/', '', $text );
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return $text;
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}
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/**
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* Replace placeholders for topic subscription buttons with the real thing.
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*
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* @param string $text
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* @param Language $lang
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* @param SubscriptionStore $subscriptionStore
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* @param UserIdentity $user
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* @param bool $isMobile
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* @return string
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*/
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public static function postprocessTopicSubscription(
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string $text, Language $lang, SubscriptionStore $subscriptionStore, UserIdentity $user, bool $isMobile
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): string {
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$doc = DOMCompat::newDocument( true );
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$matches = [];
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preg_match_all( '/<!--__DTSUBSCRIBE(LINK)?__(.*?)-->/', $text, $matches );
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$itemNames = array_map(
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static function ( string $itemName, string $link ): string {
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return $link ? htmlspecialchars_decode( $itemName ) : $itemName;
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},
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$matches[2], $matches[1]
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);
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// TODO: Remove (LINK)? from regex once parser cache has expired (a few weeks):
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// preg_match_all( '/<!--__DTSUBSCRIBELINK__(.*?)-->/', $text, $matches );
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// $itemNames = array_map(
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// static function ( string $itemName ): string {
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// return htmlspecialchars_decode( $itemName );
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// },
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// $matches[1]
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// );
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$items = $subscriptionStore->getSubscriptionItemsForUser(
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$user,
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$itemNames
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);
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$itemsByName = [];
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foreach ( $items as $item ) {
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$itemsByName[ $item->getItemName() ] = $item;
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}
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$text = preg_replace_callback(
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'/<!--__DTSUBSCRIBE(LINK)?__(.*?)-->/',
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static function ( $matches ) use ( $doc, $itemsByName, $lang ) {
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// TODO: Remove (LINK)? from regex
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$itemName = $matches[1] ? htmlspecialchars_decode( $matches[2] ) : $matches[2];
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$isSubscribed = isset( $itemsByName[ $itemName ] ) && !$itemsByName[ $itemName ]->isMuted();
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$subscribedState = isset( $itemsByName[ $itemName ] ) ? $itemsByName[ $itemName ]->getState() : null;
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$subscribe = $doc->createElement( 'span' );
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$subscribe->setAttribute(
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'class',
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'ext-discussiontools-init-section-subscribe mw-editsection-like'
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);
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$subscribeLink = $doc->createElement( 'a' );
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// Set empty 'href' to avoid a:not([href]) selector in MobileFrontend
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$subscribeLink->setAttribute( 'href', '' );
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$subscribeLink->setAttribute( 'class', 'ext-discussiontools-init-section-subscribe-link' );
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$subscribeLink->setAttribute( 'role', 'button' );
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$subscribeLink->setAttribute( 'tabindex', '0' );
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$subscribeLink->setAttribute( 'title', wfMessage(
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$isSubscribed ?
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'discussiontools-topicsubscription-button-unsubscribe-tooltip' :
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'discussiontools-topicsubscription-button-subscribe-tooltip'
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)->inLanguage( $lang )->text() );
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$subscribeLink->nodeValue = wfMessage(
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$isSubscribed ?
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'discussiontools-topicsubscription-button-unsubscribe' :
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'discussiontools-topicsubscription-button-subscribe'
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)->inLanguage( $lang )->text();
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if ( $subscribedState !== null ) {
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$subscribeLink->setAttribute( 'data-mw-subscribed', (string)$subscribedState );
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}
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$bracket = $doc->createElement( 'span' );
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$bracket->setAttribute( 'class', 'ext-discussiontools-init-section-subscribe-bracket' );
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$bracketOpen = $bracket->cloneNode( false );
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$bracketOpen->nodeValue = '[';
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$bracketClose = $bracket->cloneNode( false );
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$bracketClose->nodeValue = ']';
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$subscribe->appendChild( $bracketOpen );
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$subscribe->appendChild( $subscribeLink );
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$subscribe->appendChild( $bracketClose );
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return DOMCompat::getOuterHTML( $subscribe );
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},
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$text
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);
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$text = preg_replace_callback(
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// (DESKTOP|MOBILE)? can be made unconditional once the un-suffixed buttons have cleared from the cache
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'/<!--__DTSUBSCRIBEBUTTON(DESKTOP|MOBILE)?__(.*?)-->/',
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static function ( $matches ) use ( $doc, $itemsByName, $lang, $isMobile ) {
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if ( $matches[1] ) {
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$buttonIsMobile = $matches[1] === 'MOBILE';
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if ( $buttonIsMobile !== $isMobile ) {
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return '';
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}
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}
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$itemName = htmlspecialchars_decode( $matches[2] );
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$isSubscribed = isset( $itemsByName[ $itemName ] ) && !$itemsByName[ $itemName ]->isMuted();
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$subscribedState = isset( $itemsByName[ $itemName ] ) ? $itemsByName[ $itemName ]->getState() : null;
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$subscribe = new \OOUI\ButtonWidget( [
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'classes' => [ 'ext-discussiontools-init-section-subscribeButton' ],
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'framed' => false,
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'icon' => $isSubscribed ? 'bell' : 'bellOutline',
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'flags' => [ 'progressive' ],
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'label' => wfMessage( $isSubscribed ?
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'discussiontools-topicsubscription-button-unsubscribe-label' :
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'discussiontools-topicsubscription-button-subscribe-label'
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)->inLanguage( $lang )->text(),
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'title' => wfMessage( $isSubscribed ?
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'discussiontools-topicsubscription-button-unsubscribe-tooltip' :
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'discussiontools-topicsubscription-button-subscribe-tooltip'
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)->inLanguage( $lang )->text(),
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'infusable' => true,
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] );
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if ( $subscribedState !== null ) {
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$subscribe->setAttributes( [ 'data-mw-subscribed' => (string)$subscribedState ] );
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}
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return $subscribe->toString();
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},
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$text
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);
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return $text;
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}
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/**
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* Replace placeholders for reply links with the real thing.
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*
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* @param string $text
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* @param Language $lang
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* @return string
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*/
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public static function postprocessReplyTool(
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string $text, Language $lang
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): string {
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$replyText = wfMessage( 'discussiontools-replylink' )->inLanguage( $lang )->escaped();
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$text = strtr( $text, [
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'<!--__DTREPLY__-->' => $replyText,
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'<!--__DTREPLYBRACKETOPEN__-->' => '[',
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'<!--__DTREPLYBRACKETCLOSE__-->' => ']',
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] );
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return $text;
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}
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/**
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* Create a meta item label
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*
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* @param string $className
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* @param string|\OOUI\HtmlSnippet $label Label
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* @return \OOUI\Tag
|
|
*/
|
|
private static function metaLabel( string $className, $label ): \OOUI\Tag {
|
|
return ( new \OOUI\Tag( 'span' ) )
|
|
->addClasses( [ 'ext-discussiontools-init-section-metaitem', $className ] )
|
|
->appendContent( $label );
|
|
}
|
|
|
|
/**
|
|
* Get JSON for a commentItem that can be inserted into a comment marker
|
|
*
|
|
* @param ContentCommentItem $commentItem Comment item
|
|
* @return string
|
|
*/
|
|
private static function getJsonForCommentMarker( ContentCommentItem $commentItem ): string {
|
|
$JSON = [
|
|
'id' => $commentItem->getId(),
|
|
'timestamp' => $commentItem->getTimestampString()
|
|
];
|
|
return json_encode( $JSON );
|
|
}
|
|
|
|
/**
|
|
* Get a relative timestamp from a signature timestamp.
|
|
*
|
|
* Signature timestamps don't have seconds-level accuracy, so any
|
|
* time difference of less than 120 seconds is treated as being
|
|
* posted "just now".
|
|
*
|
|
* @param MWTimestamp $timestamp
|
|
* @param Language $lang
|
|
* @param UserIdentity $user
|
|
* @return string
|
|
*/
|
|
public static function getSignatureRelativeTime(
|
|
MWTimestamp $timestamp, Language $lang, UserIdentity $user
|
|
): string {
|
|
if ( time() - intval( $timestamp->getTimestamp() ) < 120 ) {
|
|
$timestamp = new MWTimestamp();
|
|
}
|
|
return $lang->getHumanTimestamp( $timestamp, null, $user );
|
|
}
|
|
|
|
/**
|
|
* Post-process timestamps
|
|
*
|
|
* @param string $text
|
|
* @param Language $lang
|
|
* @param UserIdentity $user
|
|
* @return string
|
|
*/
|
|
public static function postprocessVisualEnhancements(
|
|
string $text, Language $lang, UserIdentity $user
|
|
): string {
|
|
$text = preg_replace_callback(
|
|
'/<!--__DTLATESTCOMMENTTHREAD__(.*?)__-->/',
|
|
static function ( $matches ) use ( $lang, $user ) {
|
|
$itemData = json_decode( htmlspecialchars_decode( $matches[1] ), true );
|
|
if ( $itemData && $itemData['timestamp'] && $itemData['id'] ) {
|
|
$relativeTime = static::getSignatureRelativeTime(
|
|
new MWTimestamp( $itemData['timestamp'] ),
|
|
$lang,
|
|
$user
|
|
);
|
|
$commentLink = Html::element( 'a', [
|
|
'href' => '#' . $itemData['id']
|
|
], $relativeTime );
|
|
|
|
$label = wfMessage( 'discussiontools-topicheader-latestcomment' )
|
|
->rawParams( $commentLink )
|
|
->inLanguage( $lang )->escaped();
|
|
|
|
return CommentFormatter::metaLabel(
|
|
'ext-discussiontools-init-section-timestampLabel',
|
|
new \OOUI\HtmlSnippet( $label )
|
|
);
|
|
}
|
|
},
|
|
$text
|
|
);
|
|
$text = preg_replace_callback(
|
|
'/<!--__DTCOMMENTCOUNT__([0-9]+)__-->/',
|
|
static function ( $matches ) use ( $lang, $user ) {
|
|
$count = $lang->formatNum( $matches[1] );
|
|
$label = wfMessage(
|
|
'discussiontools-topicheader-commentcount',
|
|
$count
|
|
)->inLanguage( $lang )->text();
|
|
return CommentFormatter::metaLabel(
|
|
'ext-discussiontools-init-section-commentCountLabel',
|
|
$label
|
|
);
|
|
},
|
|
$text
|
|
);
|
|
$text = preg_replace_callback(
|
|
'/<!--__DTAUTHORCOUNT__([0-9]+)__-->/',
|
|
static function ( $matches ) use ( $lang, $user ) {
|
|
$count = $lang->formatNum( $matches[1] );
|
|
$label = wfMessage(
|
|
'discussiontools-topicheader-authorcount',
|
|
$count
|
|
)->inLanguage( $lang )->text();
|
|
return CommentFormatter::metaLabel(
|
|
'ext-discussiontools-init-section-authorCountLabel',
|
|
$label
|
|
);
|
|
},
|
|
$text
|
|
);
|
|
$text = preg_replace_callback(
|
|
'/<!--__DTELLIPSISBUTTON__-->/',
|
|
static function ( $matches ) {
|
|
$ellipsis = new ButtonMenuSelectWidget( [
|
|
'classes' => [ 'ext-discussiontools-init-section-ellipsisButton' ],
|
|
'framed' => false,
|
|
'icon' => 'ellipsis',
|
|
'infusable' => true,
|
|
] );
|
|
|
|
return $ellipsis->toString();
|
|
},
|
|
$text
|
|
);
|
|
return $text;
|
|
}
|
|
|
|
/**
|
|
* Check if the talk page had no comments or headings.
|
|
*
|
|
* @param string $text
|
|
* @return bool
|
|
*/
|
|
public static function isEmptyTalkPage( string $text ): bool {
|
|
return strpos( $text, '<!--__DTEMPTYTALKPAGE__-->' ) !== false;
|
|
}
|
|
|
|
/**
|
|
* Append content to an empty talk page
|
|
*
|
|
* @param string $text
|
|
* @param string $content
|
|
* @return string
|
|
*/
|
|
public static function appendToEmptyTalkPage( string $text, string $content ): string {
|
|
return str_replace( '<!--__DTEMPTYTALKPAGE__-->', $content, $text );
|
|
}
|
|
|
|
}
|