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1<?php
2
3use MediaWiki\Context\IContextSource;
4use MediaWiki\Html\Html;
5use MediaWiki\Html\TemplateParser;
6use MediaWiki\MainConfigNames;
7use MediaWiki\Parser\Sanitizer;
8use MediaWiki\Revision\RevisionRecord;
9use MediaWiki\SpecialPage\SpecialPage;
10use MediaWiki\Title\Title;
11
12/**
13 * Generates a list of changes using an Enhanced system (uses javascript).
14 *
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License as published by
17 * the Free Software Foundation; either version 2 of the License, or
18 * (at your option) any later version.
19 *
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
24 *
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, write to the Free Software Foundation, Inc.,
27 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
28 * http://www.gnu.org/copyleft/gpl.html
29 *
30 * @file
31 */
32
33class EnhancedChangesList extends ChangesList {
34
35    /**
36     * @var RCCacheEntryFactory
37     */
38    protected $cacheEntryFactory;
39
40    /**
41     * @var RCCacheEntry[][]
42     */
43    protected $rc_cache;
44
45    /**
46     * @var TemplateParser
47     */
48    protected $templateParser;
49
50    /**
51     * @param IContextSource $context
52     * @param ChangesListFilterGroup[] $filterGroups Array of ChangesListFilterGroup objects (currently optional)
53     */
54    public function __construct( $context, array $filterGroups = [] ) {
55        parent::__construct( $context, $filterGroups );
56
57        // message is set by the parent ChangesList class
58        $this->cacheEntryFactory = new RCCacheEntryFactory(
59            $context,
60            $this->message,
61            $this->linkRenderer
62        );
63        $this->templateParser = new TemplateParser();
64    }
65
66    /**
67     * Add the JavaScript file for enhanced changeslist
68     * @return string
69     */
70    public function beginRecentChangesList() {
71        $this->getOutput()->addModuleStyles( [
72            'mediawiki.special.changeslist.enhanced',
73        ] );
74
75        parent::beginRecentChangesList();
76        return '<div class="mw-changeslist" aria-live="polite">';
77    }
78
79    /**
80     * Format a line for enhanced recentchange (aka with javascript and block of lines).
81     *
82     * @param RecentChange &$rc
83     * @param bool $watched
84     * @param int|null $linenumber (default null)
85     *
86     * @return string
87     */
88    public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
89        $date = $this->getLanguage()->userDate(
90            $rc->mAttribs['rc_timestamp'],
91            $this->getUser()
92        );
93        if ( $this->lastdate === '' ) {
94            $this->lastdate = $date;
95        }
96
97        $ret = '';
98
99        # If it's a new day, flush the cache and update $this->lastdate
100        if ( $date !== $this->lastdate ) {
101            # Process current cache (uses $this->lastdate to generate a heading)
102            $ret = $this->recentChangesBlock();
103            $this->rc_cache = [];
104            $this->lastdate = $date;
105        }
106
107        $cacheEntry = $this->cacheEntryFactory->newFromRecentChange( $rc, $watched );
108        $this->addCacheEntry( $cacheEntry );
109
110        return $ret;
111    }
112
113    /**
114     * Put accumulated information into the cache, for later display.
115     * Page moves go on their own line.
116     *
117     * @param RCCacheEntry $cacheEntry
118     */
119    protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
120        $cacheGroupingKey = $this->makeCacheGroupingKey( $cacheEntry );
121        $this->rc_cache[$cacheGroupingKey][] = $cacheEntry;
122    }
123
124    /**
125     * @todo use rc_source to group, if set; fallback to rc_type
126     *
127     * @param RCCacheEntry $cacheEntry
128     *
129     * @return string
130     */
131    protected function makeCacheGroupingKey( RCCacheEntry $cacheEntry ) {
132        $title = $cacheEntry->getTitle();
133        $cacheGroupingKey = $title->getPrefixedDBkey();
134
135        $type = $cacheEntry->mAttribs['rc_type'];
136
137        if ( $type == RC_LOG ) {
138            // Group by log type
139            $cacheGroupingKey = SpecialPage::getTitleFor(
140                'Log',
141                $cacheEntry->mAttribs['rc_log_type']
142            )->getPrefixedDBkey();
143        }
144
145        return $cacheGroupingKey;
146    }
147
148    /**
149     * Enhanced RC group
150     * @param RCCacheEntry[] $block
151     * @return string
152     */
153    protected function recentChangesBlockGroup( $block ) {
154        $recentChangesFlags = $this->getConfig()->get( MainConfigNames::RecentChangesFlags );
155
156        # Add the namespace and title of the block as part of the class
157        $tableClasses = [ 'mw-enhanced-rc', 'mw-changeslist-line' ];
158        if ( $block[0]->mAttribs['rc_log_type'] ) {
159            # Log entry
160            $tableClasses[] = 'mw-changeslist-log';
161            $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
162                . $block[0]->mAttribs['rc_log_type'] );
163        } else {
164            $tableClasses[] = 'mw-changeslist-edit';
165            $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
166                . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
167        }
168        if ( $block[0]->watched ) {
169            $tableClasses[] = 'mw-changeslist-line-watched';
170        } else {
171            $tableClasses[] = 'mw-changeslist-line-not-watched';
172        }
173
174        # Collate list of users
175        $usercounts = [];
176        $userlinks = [];
177        # Some catalyst variables...
178        $namehidden = true;
179        $allLogs = true;
180        $RCShowChangedSize = $this->getConfig()->get( MainConfigNames::RCShowChangedSize );
181
182        # Default values for RC flags
183        $collectedRcFlags = [];
184        foreach ( $recentChangesFlags as $key => $value ) {
185            $flagGrouping = $value['grouping'] ?? 'any';
186            switch ( $flagGrouping ) {
187                case 'all':
188                    $collectedRcFlags[$key] = true;
189                    break;
190                case 'any':
191                    $collectedRcFlags[$key] = false;
192                    break;
193                default:
194                    throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
195            }
196        }
197        foreach ( $block as $rcObj ) {
198            // If all log actions to this page were hidden, then don't
199            // give the name of the affected page for this block!
200            if ( !static::isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
201                $namehidden = false;
202            }
203            $username = $rcObj->getPerformerIdentity()->getName();
204            $userlink = $rcObj->userlink;
205            if ( !isset( $usercounts[$username] ) ) {
206                $usercounts[$username] = 0;
207                $userlinks[$username] = $userlink;
208            }
209            if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
210                $allLogs = false;
211            }
212
213            $usercounts[$username]++;
214        }
215
216        # Sort the list and convert to text
217        krsort( $usercounts );
218        asort( $usercounts );
219        $users = [];
220        foreach ( $usercounts as $username => $count ) {
221            $text = $userlinks[$username];
222            $text .= $this->getLanguage()->getDirMark();
223            if ( $count > 1 ) {
224                $formattedCount = $this->msg( 'ntimes' )->numParams( $count )->escaped();
225                $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
226            }
227            $users[] = $text;
228        }
229
230        # Article link
231        $articleLink = '';
232        $revDeletedMsg = false;
233        if ( $namehidden ) {
234            $revDeletedMsg = $this->msg( 'rev-deleted-event' )->escaped();
235        } elseif ( $allLogs ) {
236            $articleLink = $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
237        } else {
238            $articleLink = $this->getArticleLink(
239                $block[0], $block[0]->unpatrolled, $block[0]->watched );
240        }
241
242        # Sub-entries
243        $lines = [];
244        $filterClasses = [];
245        foreach ( $block as $i => $rcObj ) {
246            $line = $this->getLineData( $block, $rcObj );
247            if ( !$line ) {
248                // completely ignore this RC entry if we don't want to render it
249                unset( $block[$i] );
250                continue;
251            }
252
253            // Roll up flags
254            foreach ( $line['recentChangesFlagsRaw'] as $key => $value ) {
255                $flagGrouping = ( $recentChangesFlags[$key]['grouping'] ?? 'any' );
256                switch ( $flagGrouping ) {
257                    case 'all':
258                        if ( !$value ) {
259                            $collectedRcFlags[$key] = false;
260                        }
261                        break;
262                    case 'any':
263                        if ( $value ) {
264                            $collectedRcFlags[$key] = true;
265                        }
266                        break;
267                    default:
268                        throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
269                }
270            }
271
272            // Roll up filter-based CSS classes
273            $filterClasses = array_merge( $filterClasses, $this->getHTMLClassesForFilters( $rcObj ) );
274            // Add classes for change tags separately, getHTMLClassesForFilters() doesn't add them
275            $this->getTags( $rcObj, $filterClasses );
276            $filterClasses = array_unique( $filterClasses );
277
278            $lines[] = $line;
279        }
280
281        // Further down are some assumptions that $block is a 0-indexed array
282        // with (count-1) as last key. Let's make sure it is.
283        $block = array_values( $block );
284        $filterClasses = array_values( $filterClasses );
285
286        if ( !$block || !$lines ) {
287            // if we can't show anything, don't display this block altogether
288            return '';
289        }
290
291        $logText = $this->getLogText( $block, [], $allLogs,
292            $collectedRcFlags['newpage'], $namehidden
293        );
294
295        # Character difference (does not apply if only log items)
296        $charDifference = false;
297        if ( $RCShowChangedSize && !$allLogs ) {
298            $last = 0;
299            $first = count( $block ) - 1;
300            # Some events (like logs and category changes) have an "empty" size, so we need to skip those...
301            while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
302                $last++;
303            }
304            while ( $last < $first && $block[$first]->mAttribs['rc_old_len'] === null ) {
305                $first--;
306            }
307            # Get net change
308            $charDifference = $this->formatCharacterDifference( $block[$first], $block[$last] ) ?: false;
309        }
310
311        $numberofWatchingusers = $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
312        $usersList = $this->msg( 'brackets' )->rawParams(
313            implode( $this->message['semicolon-separator'], $users )
314        )->escaped();
315
316        $prefix = '';
317        if ( is_callable( $this->changeLinePrefixer ) ) {
318            $prefix = call_user_func( $this->changeLinePrefixer, $block[0], $this, true );
319        }
320
321        $templateParams = [
322            'checkboxId' => 'mw-checkbox-' . base64_encode( random_bytes( 3 ) ),
323            'articleLink' => $articleLink,
324            'charDifference' => $charDifference,
325            'collectedRcFlags' => $this->recentChangesFlags( $collectedRcFlags ),
326            'filterClasses' => $filterClasses,
327            'languageDirMark' => $this->getLanguage()->getDirMark(),
328            'lines' => $lines,
329            'logText' => $logText,
330            'numberofWatchingusers' => $numberofWatchingusers,
331            'prefix' => $prefix,
332            'rev-deleted-event' => $revDeletedMsg,
333            'tableClasses' => $tableClasses,
334            'timestamp' => $block[0]->timestamp,
335            'fullTimestamp' => $block[0]->getAttribute( 'rc_timestamp' ),
336            'users' => $usersList,
337        ];
338
339        $this->rcCacheIndex++;
340
341        return $this->templateParser->processTemplate(
342            'EnhancedChangesListGroup',
343            $templateParams
344        );
345    }
346
347    /**
348     * @param RCCacheEntry[] $block
349     * @param RCCacheEntry $rcObj
350     * @param array $queryParams
351     * @return array
352     */
353    protected function getLineData( array $block, RCCacheEntry $rcObj, array $queryParams = [] ) {
354        $RCShowChangedSize = $this->getConfig()->get( MainConfigNames::RCShowChangedSize );
355
356        $type = $rcObj->mAttribs['rc_type'];
357        $data = [];
358        $lineParams = [ 'targetTitle' => $rcObj->getTitle() ];
359
360        $classes = [ 'mw-enhanced-rc' ];
361        if ( $rcObj->watched ) {
362            $classes[] = 'mw-enhanced-watched';
363        }
364        $classes = array_merge( $classes, $this->getHTMLClasses( $rcObj, $rcObj->watched ) );
365
366        $separator = ' <span class="mw-changeslist-separator"></span> ';
367
368        $data['recentChangesFlags'] = [
369            'newpage' => $type == RC_NEW,
370            'minor' => $rcObj->mAttribs['rc_minor'],
371            'unpatrolled' => $rcObj->unpatrolled,
372            'bot' => $rcObj->mAttribs['rc_bot'],
373        ];
374
375        # Log timestamp
376        if ( $type == RC_LOG ) {
377            $link = htmlspecialchars( $rcObj->timestamp );
378            # Revision link
379        } elseif ( !ChangesList::userCan( $rcObj, RevisionRecord::DELETED_TEXT, $this->getAuthority() ) ) {
380            $link = Html::element( 'span', [ 'class' => 'history-deleted' ], $rcObj->timestamp );
381        } else {
382            $params = [];
383            $params['curid'] = $rcObj->mAttribs['rc_cur_id'];
384            if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
385                $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
386            }
387            // FIXME: The link has incorrect "title=" when rc_type = RC_CATEGORIZE.
388            // rc_cur_id refers to the page that was categorized
389            // whereas RecentChange::getTitle refers to the category.
390            $link = $this->linkRenderer->makeKnownLink(
391                $rcObj->getTitle(),
392                $rcObj->timestamp,
393                [],
394                $params + $queryParams
395            );
396            if ( static::isDeleted( $rcObj, RevisionRecord::DELETED_TEXT ) ) {
397                $link = '<span class="history-deleted">' . $link . '</span> ';
398            }
399        }
400        $data['timestampLink'] = $link;
401
402        $currentAndLastLinks = '';
403        if ( $type == RC_EDIT || $type == RC_NEW ) {
404            $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
405                    $rcObj->curlink .
406                    $this->message['pipe-separator'] .
407                    $rcObj->lastlink
408                )->escaped();
409        }
410        $data['currentAndLastLinks'] = $currentAndLastLinks;
411        $data['separatorAfterCurrentAndLastLinks'] = $separator;
412
413        # Character diff
414        if ( $RCShowChangedSize ) {
415            $cd = $this->formatCharacterDifference( $rcObj );
416            if ( $cd !== '' ) {
417                $data['characterDiff'] = $cd;
418                $data['separatorAfterCharacterDiff'] = $separator;
419            }
420        }
421
422        if ( $type == RC_LOG ) {
423            $data['logEntry'] = $this->insertLogEntry( $rcObj );
424        } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
425            $data['comment'] = $this->insertComment( $rcObj );
426        } else {
427            # User links
428            $data['userLink'] = $rcObj->userlink;
429            $data['userTalkLink'] = $rcObj->usertalklink;
430            $data['comment'] = $this->insertComment( $rcObj );
431            if ( $type == RC_CATEGORIZE ) {
432                $data['historyLink'] = $this->getDiffHistLinks( $rcObj, false );
433            }
434            # Rollback, thanks etc...
435            $data['rollback'] = $this->getRollback( $rcObj );
436        }
437
438        # Tags
439        $data['tags'] = $this->getTags( $rcObj, $classes );
440
441        $attribs = $this->getDataAttributes( $rcObj );
442
443        // give the hook a chance to modify the data
444        $success = $this->getHookRunner()->onEnhancedChangesListModifyLineData(
445            $this, $data, $block, $rcObj, $classes, $attribs );
446        if ( !$success ) {
447            // skip entry if hook aborted it
448            return [];
449        }
450        $attribs = array_filter( $attribs,
451            [ Sanitizer::class, 'isReservedDataAttribute' ],
452            ARRAY_FILTER_USE_KEY
453        );
454
455        $lineParams['recentChangesFlagsRaw'] = [];
456        if ( isset( $data['recentChangesFlags'] ) ) {
457            $lineParams['recentChangesFlags'] = $this->recentChangesFlags( $data['recentChangesFlags'] );
458            # FIXME: This is used by logic, don't return it in the template params.
459            $lineParams['recentChangesFlagsRaw'] = $data['recentChangesFlags'];
460            unset( $data['recentChangesFlags'] );
461        }
462
463        if ( isset( $data['timestampLink'] ) ) {
464            $lineParams['timestampLink'] = $data['timestampLink'];
465            unset( $data['timestampLink'] );
466        }
467
468        $lineParams['classes'] = array_values( $classes );
469        $lineParams['attribs'] = Html::expandAttributes( $attribs );
470
471        // everything else: makes it easier for extensions to add or remove data
472        $lineParams['data'] = array_values( $data );
473
474        return $lineParams;
475    }
476
477    /**
478     * Generates amount of changes (linking to diff ) & link to history.
479     *
480     * @param RCCacheEntry[] $block
481     * @param array $queryParams
482     * @param bool $allLogs
483     * @param bool $isnew
484     * @param bool $namehidden
485     * @return string
486     */
487    protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
488        if ( !$block ) {
489            return '';
490        }
491
492        // Changes message
493        static $nchanges = [];
494        static $sinceLastVisitMsg = [];
495
496        $n = count( $block );
497        if ( !isset( $nchanges[$n] ) ) {
498            $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
499        }
500
501        $sinceLast = 0;
502        $unvisitedOldid = null;
503        $currentRevision = 0;
504        $previousRevision = 0;
505        $curId = 0;
506        $allCategorization = true;
507        /** @var RCCacheEntry $rcObj */
508        foreach ( $block as $rcObj ) {
509            // Fields of categorization entries refer to the changed page
510            // rather than the category for which we are building the log text.
511            if ( $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE ) {
512                continue;
513            }
514
515            $allCategorization = false;
516            $previousRevision = $rcObj->mAttribs['rc_last_oldid'];
517            // Same logic as below inside main foreach
518            if ( $rcObj->watched ) {
519                $sinceLast++;
520                $unvisitedOldid = $previousRevision;
521            }
522            if ( !$currentRevision ) {
523                $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
524            }
525            if ( !$curId ) {
526                $curId = $rcObj->mAttribs['rc_cur_id'];
527            }
528        }
529
530        // Total change link
531        $links = [];
532        $title = $block[0]->getTitle();
533        if ( !$allLogs ) {
534            // TODO: Disable the link if the user cannot see it (rc_deleted).
535            // Beware of possibly interspersed categorization entries.
536            if ( $isnew || $allCategorization ) {
537                $links['total-changes'] = Html::rawElement( 'span', [], $nchanges[$n] );
538            } else {
539                $links['total-changes'] = Html::rawElement( 'span', [],
540                    $this->linkRenderer->makeKnownLink(
541                        $title,
542                        new HtmlArmor( $nchanges[$n] ),
543                        [ 'class' => 'mw-changeslist-groupdiff' ],
544                        $queryParams + [
545                            'curid' => $curId,
546                            'diff' => $currentRevision,
547                            'oldid' => $previousRevision,
548                        ]
549                    )
550                );
551            }
552
553            if (
554                !$allCategorization &&
555                $sinceLast > 0 &&
556                $sinceLast < $n
557            ) {
558                if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
559                    $sinceLastVisitMsg[$sinceLast] =
560                        $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
561                }
562                $links['total-changes-since-last'] = Html::rawElement( 'span', [],
563                    $this->linkRenderer->makeKnownLink(
564                        $title,
565                        new HtmlArmor( $sinceLastVisitMsg[$sinceLast] ),
566                        [ 'class' => 'mw-changeslist-groupdiff' ],
567                        $queryParams + [
568                            'curid' => $curId,
569                            'diff' => $currentRevision,
570                            'oldid' => $unvisitedOldid,
571                        ]
572                    )
573                );
574            }
575        }
576
577        // History
578        if ( $allLogs || $allCategorization ) {
579            // don't show history link for logs
580        } elseif ( $namehidden || !$title->exists() ) {
581            $links['history'] = Html::rawElement( 'span', [], $this->message['enhancedrc-history'] );
582        } else {
583            $links['history'] = Html::rawElement( 'span', [],
584                $this->linkRenderer->makeKnownLink(
585                    $title,
586                    new HtmlArmor( $this->message['enhancedrc-history'] ),
587                    [ 'class' => 'mw-changeslist-history' ],
588                    [
589                        'curid' => $curId,
590                        'action' => 'history',
591                    ] + $queryParams
592                )
593            );
594        }
595
596        // Allow others to alter, remove or add to these links
597        $this->getHookRunner()->onEnhancedChangesList__getLogText( $this, $links, $block );
598
599        if ( !$links ) {
600            return '';
601        }
602
603        $logtext = Html::rawElement( 'span', [ 'class' => 'mw-changeslist-links' ],
604            implode( ' ', $links ) );
605        return ' ' . $logtext;
606    }
607
608    /**
609     * Enhanced RC ungrouped line.
610     *
611     * @param RecentChange|RCCacheEntry $rcObj
612     * @return string A HTML formatted line (generated using $r)
613     */
614    protected function recentChangesBlockLine( $rcObj ) {
615        $data = [];
616
617        $type = $rcObj->mAttribs['rc_type'];
618        $logType = $rcObj->mAttribs['rc_log_type'];
619        $classes = $this->getHTMLClasses( $rcObj, $rcObj->watched );
620        $classes[] = 'mw-enhanced-rc';
621
622        if ( $logType ) {
623            # Log entry
624            $classes[] = 'mw-changeslist-log';
625            $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
626        } else {
627            $classes[] = 'mw-changeslist-edit';
628            $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
629                $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
630        }
631
632        # Flag and Timestamp
633        $data['recentChangesFlags'] = [
634            'newpage' => $type == RC_NEW,
635            'minor' => $rcObj->mAttribs['rc_minor'],
636            'unpatrolled' => $rcObj->unpatrolled,
637            'bot' => $rcObj->mAttribs['rc_bot'],
638        ];
639        // timestamp is not really a link here, but is called timestampLink
640        // for consistency with EnhancedChangesListModifyLineData
641        $data['timestampLink'] = htmlspecialchars( $rcObj->timestamp );
642
643        # Article or log link
644        if ( $logType ) {
645            $logPage = new LogPage( $logType );
646            $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
647            $logName = $logPage->getName()->text();
648            $data['logLink'] = Html::rawElement( 'span', [ 'class' => 'mw-changeslist-links' ],
649                $this->linkRenderer->makeKnownLink( $logTitle, $logName )
650            );
651        } else {
652            $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
653        }
654
655        # Diff and hist links
656        if ( $type != RC_LOG && $type != RC_CATEGORIZE ) {
657            $data['historyLink'] = $this->getDiffHistLinks( $rcObj, false );
658        }
659        $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator"></span> ';
660
661        # Character diff
662        if ( $this->getConfig()->get( MainConfigNames::RCShowChangedSize ) ) {
663            $cd = $this->formatCharacterDifference( $rcObj );
664            if ( $cd !== '' ) {
665                $data['characterDiff'] = $cd;
666                $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator"></span> ';
667            }
668        }
669
670        if ( $type == RC_LOG ) {
671            $data['logEntry'] = $this->insertLogEntry( $rcObj );
672        } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
673            $data['comment'] = $this->insertComment( $rcObj );
674        } else {
675            $data['userLink'] = $rcObj->userlink;
676            $data['userTalkLink'] = $rcObj->usertalklink;
677            $data['comment'] = $this->insertComment( $rcObj );
678            if ( $type == RC_CATEGORIZE ) {
679                $data['historyLink'] = $this->getDiffHistLinks( $rcObj, false );
680            }
681            $data['rollback'] = $this->getRollback( $rcObj );
682        }
683
684        # Tags
685        $data['tags'] = $this->getTags( $rcObj, $classes );
686
687        # Show how many people are watching this if enabled
688        $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
689
690        $data['attribs'] = array_merge( $this->getDataAttributes( $rcObj ), [ 'class' => $classes ] );
691
692        // give the hook a chance to modify the data
693        $success = $this->getHookRunner()->onEnhancedChangesListModifyBlockLineData(
694            $this, $data, $rcObj );
695        if ( !$success ) {
696            // skip entry if hook aborted it
697            return '';
698        }
699        $attribs = $data['attribs'];
700        unset( $data['attribs'] );
701        $attribs = array_filter( $attribs, static function ( $key ) {
702            return $key === 'class' || Sanitizer::isReservedDataAttribute( $key );
703        }, ARRAY_FILTER_USE_KEY );
704
705        $prefix = '';
706        if ( is_callable( $this->changeLinePrefixer ) ) {
707            $prefix = call_user_func( $this->changeLinePrefixer, $rcObj, $this, false );
708        }
709
710        $line = Html::openElement( 'table', $attribs ) . Html::openElement( 'tr' );
711        // Highlight block
712        $line .= Html::rawElement( 'td', [],
713            $this->getHighlightsContainerDiv()
714        );
715
716        $line .= Html::rawElement( 'td', [], '<span class="mw-enhancedchanges-arrow-space"></span>' );
717        $line .= Html::rawElement( 'td', [ 'class' => 'mw-changeslist-line-prefix' ], $prefix );
718        $line .= '<td class="mw-enhanced-rc" colspan="2">';
719
720        if ( isset( $data['recentChangesFlags'] ) ) {
721            $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
722            unset( $data['recentChangesFlags'] );
723        }
724
725        if ( isset( $data['timestampLink'] ) ) {
726            $line .= "\u{00A0}" . $data['timestampLink'];
727            unset( $data['timestampLink'] );
728        }
729        $line .= "\u{00A0}</td>";
730        $line .= Html::openElement( 'td', [
731            'class' => 'mw-changeslist-line-inner',
732            // Used for reliable determination of the affiliated page
733            'data-target-page' => $rcObj->getTitle(),
734        ] );
735
736        // everything else: makes it easier for extensions to add or remove data
737        foreach ( $data as $key => $dataItem ) {
738            $line .= Html::rawElement( 'span', [
739                'class' => 'mw-changeslist-line-inner-' . $key,
740            ], $dataItem );
741        }
742
743        $line .= "</td></tr></table>\n";
744
745        return $line;
746    }
747
748    /**
749     * Returns value to be used in 'historyLink' element of $data param in
750     * EnhancedChangesListModifyBlockLineData hook.
751     *
752     * @since 1.27
753     *
754     * @param RCCacheEntry $rc
755     * @param bool|array|null $query deprecated
756     * @param bool|null $useParentheses (optional) Wrap comments in parentheses where needed
757     * @return string HTML
758     */
759    public function getDiffHistLinks( RCCacheEntry $rc, $query = null, $useParentheses = null ) {
760        if ( is_bool( $query ) ) {
761            $useParentheses = $query;
762        } elseif ( $query !== null ) {
763            wfDeprecated( __METHOD__ . ' with $query parameter', '1.36' );
764        }
765        $pageTitle = $rc->getTitle();
766        if ( $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE ) {
767            // For categorizations we must swap the category title with the page title!
768            $pageTitle = Title::newFromID( $rc->getAttribute( 'rc_cur_id' ) );
769            if ( !$pageTitle ) {
770                // The page has been deleted, but the RC entry
771                // deletion job has not run yet. Just skip.
772                return '';
773            }
774        }
775
776        $histLink = $this->linkRenderer->makeKnownLink(
777            $pageTitle,
778            new HtmlArmor( $this->message['hist'] ),
779            [ 'class' => 'mw-changeslist-history' ],
780            [
781                'curid' => $rc->getAttribute( 'rc_cur_id' ),
782                'action' => 'history'
783            ]
784        );
785        if ( $useParentheses !== false ) {
786            $retVal = $this->msg( 'parentheses' )
787            ->rawParams( $rc->difflink . $this->message['pipe-separator']
788                . $histLink )->escaped();
789        } else {
790            $retVal = Html::rawElement( 'span', [ 'class' => 'mw-changeslist-links' ],
791                Html::rawElement( 'span', [], $rc->difflink ) .
792                Html::rawElement( 'span', [], $histLink )
793            );
794        }
795        return ' ' . $retVal;
796    }
797
798    /**
799     * If enhanced RC is in use, this function takes the previously cached
800     * RC lines, arranges them, and outputs the HTML
801     *
802     * @return string
803     */
804    protected function recentChangesBlock() {
805        if ( count( $this->rc_cache ) == 0 ) {
806            return '';
807        }
808
809        $blockOut = '';
810        foreach ( $this->rc_cache as $block ) {
811            if ( count( $block ) < 2 ) {
812                $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
813            } else {
814                $blockOut .= $this->recentChangesBlockGroup( $block );
815            }
816        }
817
818        if ( $blockOut === '' ) {
819            return '';
820        }
821        // $this->lastdate is kept up to date by recentChangesLine()
822        return Html::element( 'h4', [], $this->lastdate ) . "\n<div>" . $blockOut . '</div>';
823    }
824
825    /**
826     * Returns text for the end of RC
827     * If enhanced RC is in use, returns pretty much all the text
828     * @return string
829     */
830    public function endRecentChangesList() {
831        return $this->recentChangesBlock() . '</div>';
832    }
833}