includes/changes/EnhancedChangesList.php

   1 <?php
   2 /**
   3  * Generates a list of changes using an Enhanced system (uses javascript).
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 class EnhancedChangesList extends ChangesList {
  24
  25         /**
  26          * @var RCCacheEntryFactory
  27          */
  28         protected $cacheEntryFactory;
  29
  30         /**
  31          * @var array Array of array of RCCacheEntry
  32          */
  33         protected $rc_cache;
  34
  35         /**
  36          * @var TemplateParser
  37          */
  38         protected $templateParser;
  39
  40         /**
  41          * @param IContextSource|Skin $obj
  42          * @param array $filterGroups Array of ChangesListFilterGroup objects (currently optional)
  43          * @throws MWException
  44          */
  45         public function __construct( $obj, array $filterGroups = [] ) {
  46                 if ( $obj instanceof Skin ) {
  47                         // @todo: deprecate constructing with Skin
  48                         $context = $obj->getContext();
  49                 } else {
  50                         if ( !$obj instanceof IContextSource ) {
  51                                 throw new MWException( 'EnhancedChangesList must be constructed with a '
  52                                         . 'context source or skin.' );
  53                         }
  54
  55                         $context = $obj;
  56                 }
  57
  58                 parent::__construct( $context, $filterGroups );
  59
  60                 // message is set by the parent ChangesList class
  61                 $this->cacheEntryFactory = new RCCacheEntryFactory(
  62                         $context,
  63                         $this->message,
  64                         $this->linkRenderer
  65                 );
  66                 $this->templateParser = new TemplateParser();
  67         }
  68
  69         /**
  70          * Add the JavaScript file for enhanced changeslist
  71          * @return string
  72          */
  73         public function beginRecentChangesList() {
  74                 $this->rc_cache = [];
  75                 $this->rcMoveIndex = 0;
  76                 $this->rcCacheIndex = 0;
  77                 $this->lastdate = '';
  78                 $this->rclistOpen = false;
  79                 $this->getOutput()->addModuleStyles( [
  80                         'mediawiki.special.changeslist',
  81                         'mediawiki.special.changeslist.enhanced',
  82                 ] );
  83                 $this->getOutput()->addModules( [
  84                         'jquery.makeCollapsible',
  85                         'mediawiki.icon',
  86                 ] );
  87
  88                 return '<div class="mw-changeslist">';
  89         }
  90
  91         /**
  92          * Format a line for enhanced recentchange (aka with javascript and block of lines).
  93          *
  94          * @param RecentChange $rc
  95          * @param bool $watched
  96          * @param int $linenumber (default null)
  97          *
  98          * @return string
  99          */
 100         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 101                 $date = $this->getLanguage()->userDate(
 102                         $rc->mAttribs['rc_timestamp'],
 103                         $this->getUser()
 104                 );
 105                 if ( $this->lastdate === '' ) {
 106                         $this->lastdate = $date;
 107                 }
 108
 109                 $ret = '';
 110
 111                 # If it's a new day, flush the cache and update $this->lastdate
 112                 if ( $date !== $this->lastdate ) {
 113                         # Process current cache (uses $this->lastdate to generate a heading)
 114                         $ret = $this->recentChangesBlock();
 115                         $this->rc_cache = [];
 116                         $this->lastdate = $date;
 117                 }
 118
 119                 $cacheEntry = $this->cacheEntryFactory->newFromRecentChange( $rc, $watched );
 120                 $this->addCacheEntry( $cacheEntry );
 121
 122                 return $ret;
 123         }
 124
 125         /**
 126          * Put accumulated information into the cache, for later display.
 127          * Page moves go on their own line.
 128          *
 129          * @param RCCacheEntry $cacheEntry
 130          */
 131         protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
 132                 $cacheGroupingKey = $this->makeCacheGroupingKey( $cacheEntry );
 133
 134                 if ( !isset( $this->rc_cache[$cacheGroupingKey] ) ) {
 135                         $this->rc_cache[$cacheGroupingKey] = [];
 136                 }
 137
 138                 array_push( $this->rc_cache[$cacheGroupingKey], $cacheEntry );
 139         }
 140
 141         /**
 142          * @todo use rc_source to group, if set; fallback to rc_type
 143          *
 144          * @param RCCacheEntry $cacheEntry
 145          *
 146          * @return string
 147          */
 148         protected function makeCacheGroupingKey( RCCacheEntry $cacheEntry ) {
 149                 $title = $cacheEntry->getTitle();
 150                 $cacheGroupingKey = $title->getPrefixedDBkey();
 151
 152                 $type = $cacheEntry->mAttribs['rc_type'];
 153
 154                 if ( $type == RC_LOG ) {
 155                         // Group by log type
 156                         $cacheGroupingKey = SpecialPage::getTitleFor(
 157                                 'Log',
 158                                 $cacheEntry->mAttribs['rc_log_type']
 159                         )->getPrefixedDBkey();
 160                 }
 161
 162                 return $cacheGroupingKey;
 163         }
 164
 165         /**
 166          * Enhanced RC group
 167          * @param RCCacheEntry[] $block
 168          * @return string
 169          * @throws DomainException
 170          */
 171         protected function recentChangesBlockGroup( $block ) {
 172                 $recentChangesFlags = $this->getConfig()->get( 'RecentChangesFlags' );
 173
 174                 # Add the namespace and title of the block as part of the class
 175                 $tableClasses = [ 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' ];
 176                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 177                         # Log entry
 178                         $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 179                                 . $block[0]->mAttribs['rc_log_type'] );
 180                 } else {
 181                         $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 182                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 183                 }
 184                 if ( $block[0]->watched
 185                         && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 186                 ) {
 187                         $tableClasses[] = 'mw-changeslist-line-watched';
 188                 } else {
 189                         $tableClasses[] = 'mw-changeslist-line-not-watched';
 190                 }
 191
 192                 # Collate list of users
 193                 $userlinks = [];
 194                 # Other properties
 195                 $curId = 0;
 196                 # Some catalyst variables...
 197                 $namehidden = true;
 198                 $allLogs = true;
 199                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 200
 201                 # Default values for RC flags
 202                 $collectedRcFlags = [];
 203                 foreach ( $recentChangesFlags as $key => $value ) {
 204                         $flagGrouping = ( isset( $recentChangesFlags[$key]['grouping'] ) ?
 205                                         $recentChangesFlags[$key]['grouping'] : 'any' );
 206                         switch ( $flagGrouping ) {
 207                                 case 'all':
 208                                         $collectedRcFlags[$key] = true;
 209                                         break;
 210                                 case 'any':
 211                                         $collectedRcFlags[$key] = false;
 212                                         break;
 213                                 default:
 214                                         throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
 215                         }
 216                 }
 217                 foreach ( $block as $rcObj ) {
 218                         // If all log actions to this page were hidden, then don't
 219                         // give the name of the affected page for this block!
 220                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 221                                 $namehidden = false;
 222                         }
 223                         $u = $rcObj->userlink;
 224                         if ( !isset( $userlinks[$u] ) ) {
 225                                 $userlinks[$u] = 0;
 226                         }
 227                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 228                                 $allLogs = false;
 229                         }
 230                         # Get the latest entry with a page_id and oldid
 231                         # since logs may not have these.
 232                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 233                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 234                         }
 235
 236                         $userlinks[$u]++;
 237                 }
 238
 239                 # Sort the list and convert to text
 240                 krsort( $userlinks );
 241                 asort( $userlinks );
 242                 $users = [];
 243                 foreach ( $userlinks as $userlink => $count ) {
 244                         $text = $userlink;
 245                         $text .= $this->getLanguage()->getDirMark();
 246                         if ( $count > 1 ) {
 247                                 $formattedCount = $this->msg( 'ntimes' )->numParams( $count )->escaped();
 248                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 249                         }
 250                         array_push( $users, $text );
 251                 }
 252
 253                 # Article link
 254                 $articleLink = '';
 255                 $revDeletedMsg = false;
 256                 if ( $namehidden ) {
 257                         $revDeletedMsg = $this->msg( 'rev-deleted-event' )->escaped();
 258                 } elseif ( $allLogs ) {
 259                         $articleLink = $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 260                 } else {
 261                         $articleLink = $this->getArticleLink( $block[0], $block[0]->unpatrolled, $block[0]->watched );
 262                 }
 263
 264                 $queryParams['curid'] = $curId;
 265
 266                 # Sub-entries
 267                 $lines = [];
 268                 foreach ( $block as $i => $rcObj ) {
 269                         $line = $this->getLineData( $block, $rcObj, $queryParams );
 270                         if ( !$line ) {
 271                                 // completely ignore this RC entry if we don't want to render it
 272                                 unset( $block[$i] );
 273                                 continue;
 274                         }
 275
 276                         // Roll up flags
 277                         foreach ( $line['recentChangesFlagsRaw'] as $key => $value ) {
 278                                 $flagGrouping = ( isset( $recentChangesFlags[$key]['grouping'] ) ?
 279                                         $recentChangesFlags[$key]['grouping'] : 'any' );
 280                                 switch ( $flagGrouping ) {
 281                                         case 'all':
 282                                                 if ( !$value ) {
 283                                                         $collectedRcFlags[$key] = false;
 284                                                 }
 285                                                 break;
 286                                         case 'any':
 287                                                 if ( $value ) {
 288                                                         $collectedRcFlags[$key] = true;
 289                                                 }
 290                                                 break;
 291                                         default:
 292                                                 throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
 293                                 }
 294                         }
 295
 296                         $lines[] = $line;
 297                 }
 298
 299                 // Further down are some assumptions that $block is a 0-indexed array
 300                 // with (count-1) as last key. Let's make sure it is.
 301                 $block = array_values( $block );
 302
 303                 if ( empty( $block ) || !$lines ) {
 304                         // if we can't show anything, don't display this block altogether
 305                         return '';
 306                 }
 307
 308                 $logText = $this->getLogText( $block, $queryParams, $allLogs,
 309                         $collectedRcFlags['newpage'], $namehidden
 310                 );
 311
 312                 # Character difference (does not apply if only log items)
 313                 $charDifference = false;
 314                 if ( $RCShowChangedSize && !$allLogs ) {
 315                         $last = 0;
 316                         $first = count( $block ) - 1;
 317                         # Some events (like logs and category changes) have an "empty" size, so we need to skip those...
 318                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 319                                 $last++;
 320                         }
 321                         while ( $last < $first && $block[$first]->mAttribs['rc_old_len'] === null ) {
 322                                 $first--;
 323                         }
 324                         # Get net change
 325                         $charDifference = $this->formatCharacterDifference( $block[$first], $block[$last] );
 326                 }
 327
 328                 $numberofWatchingusers = $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
 329                 $usersList = $this->msg( 'brackets' )->rawParams(
 330                         implode( $this->message['semicolon-separator'], $users )
 331                 )->escaped();
 332
 333                 $templateParams = [
 334                         'articleLink' => $articleLink,
 335                         'charDifference' => $charDifference,
 336                         'collectedRcFlags' => $this->recentChangesFlags( $collectedRcFlags ),
 337                         'languageDirMark' => $this->getLanguage()->getDirMark(),
 338                         'lines' => $lines,
 339                         'logText' => $logText,
 340                         'numberofWatchingusers' => $numberofWatchingusers,
 341                         'rev-deleted-event' => $revDeletedMsg,
 342                         'tableClasses' => $tableClasses,
 343                         'timestamp' => $block[0]->timestamp,
 344                         'users' => $usersList,
 345                 ];
 346
 347                 $this->rcCacheIndex++;
 348
 349                 return $this->templateParser->processTemplate(
 350                         'EnhancedChangesListGroup',
 351                         $templateParams
 352                 );
 353         }
 354
 355         /**
 356          * @param RCCacheEntry[] $block
 357          * @param RCCacheEntry $rcObj
 358          * @param array $queryParams
 359          * @return array
 360          * @throws Exception
 361          * @throws FatalError
 362          * @throws MWException
 363          */
 364         protected function getLineData( array $block, RCCacheEntry $rcObj, array $queryParams = [] ) {
 365                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 366
 367                 $type = $rcObj->mAttribs['rc_type'];
 368                 $data = [];
 369                 $lineParams = [];
 370
 371                 $classes = [ 'mw-enhanced-rc' ];
 372                 if ( $rcObj->watched
 373                         && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 374                 ) {
 375                         $classes[] = 'mw-enhanced-watched';
 376                 }
 377                 $classes = array_merge( $classes, $this->getHTMLClassesForFilters( $rcObj ) );
 378
 379                 $separator = ' <span class="mw-changeslist-separator">. .</span> ';
 380
 381                 $data['recentChangesFlags'] = [
 382                         'newpage' => $type == RC_NEW,
 383                         'minor' => $rcObj->mAttribs['rc_minor'],
 384                         'unpatrolled' => $rcObj->unpatrolled,
 385                         'bot' => $rcObj->mAttribs['rc_bot'],
 386                 ];
 387
 388                 $params = $queryParams;
 389
 390                 if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 391                         $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 392                 }
 393
 394                 # Log timestamp
 395                 if ( $type == RC_LOG ) {
 396                         $link = $rcObj->timestamp;
 397                         # Revision link
 398                 } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 399                         $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 400                 } else {
 401                         $link = $this->linkRenderer->makeKnownLink(
 402                                 $rcObj->getTitle(),
 403                                 new HtmlArmor( $rcObj->timestamp ),
 404                                 [],
 405                                 $params
 406                         );
 407                         if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 408                                 $link = '<span class="history-deleted">' . $link . '</span> ';
 409                         }
 410                 }
 411                 $data['timestampLink'] = $link;
 412
 413                 $currentAndLastLinks = '';
 414                 if ( !$type == RC_LOG || $type == RC_NEW ) {
 415                         $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
 416                                         $rcObj->curlink .
 417                                         $this->message['pipe-separator'] .
 418                                         $rcObj->lastlink
 419                                 )->escaped();
 420                 }
 421                 $data['currentAndLastLinks'] = $currentAndLastLinks;
 422                 $data['separatorAfterCurrentAndLastLinks'] = $separator;
 423
 424                 # Character diff
 425                 if ( $RCShowChangedSize ) {
 426                         $cd = $this->formatCharacterDifference( $rcObj );
 427                         if ( $cd !== '' ) {
 428                                 $data['characterDiff'] = $cd;
 429                                 $data['separatorAfterCharacterDiff'] = $separator;
 430                         }
 431                 }
 432
 433                 if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 434                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 435                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 436                         $data['comment'] = $this->insertComment( $rcObj );
 437                 } else {
 438                         # User links
 439                         $data['userLink'] = $rcObj->userlink;
 440                         $data['userTalkLink'] = $rcObj->usertalklink;
 441                         $data['comment'] = $this->insertComment( $rcObj );
 442                 }
 443
 444                 # Rollback
 445                 $data['rollback'] = $this->getRollback( $rcObj );
 446
 447                 # Tags
 448                 $data['tags'] = $this->getTags( $rcObj, $classes );
 449
 450                 $attribs = $this->getDataAttributes( $rcObj );
 451
 452                 // give the hook a chance to modify the data
 453                 $success = Hooks::run( 'EnhancedChangesListModifyLineData',
 454                         [ $this, &$data, $block, $rcObj, &$classes, &$attribs ] );
 455                 if ( !$success ) {
 456                         // skip entry if hook aborted it
 457                         return [];
 458                 }
 459                 $attribs = wfArrayFilterByKey( $attribs, [ Sanitizer::class, 'isReservedDataAttribute' ] );
 460
 461                 $lineParams['recentChangesFlagsRaw'] = [];
 462                 if ( isset( $data['recentChangesFlags'] ) ) {
 463                         $lineParams['recentChangesFlags'] = $this->recentChangesFlags( $data['recentChangesFlags'] );
 464                         # FIXME: This is used by logic, don't return it in the template params.
 465                         $lineParams['recentChangesFlagsRaw'] = $data['recentChangesFlags'];
 466                         unset( $data['recentChangesFlags'] );
 467                 }
 468
 469                 if ( isset( $data['timestampLink'] ) ) {
 470                         $lineParams['timestampLink'] = $data['timestampLink'];
 471                         unset( $data['timestampLink'] );
 472                 }
 473
 474                 $lineParams['classes'] = array_values( $classes );
 475                 $lineParams['attribs'] = Html::expandAttributes( $attribs );
 476
 477                 // everything else: makes it easier for extensions to add or remove data
 478                 $lineParams['data'] = array_values( $data );
 479
 480                 return $lineParams;
 481         }
 482
 483         /**
 484          * Generates amount of changes (linking to diff ) & link to history.
 485          *
 486          * @param array $block
 487          * @param array $queryParams
 488          * @param bool $allLogs
 489          * @param bool $isnew
 490          * @param bool $namehidden
 491          * @return string
 492          */
 493         protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
 494                 if ( empty( $block ) ) {
 495                         return '';
 496                 }
 497
 498                 # Changes message
 499                 static $nchanges = [];
 500                 static $sinceLastVisitMsg = [];
 501
 502                 $n = count( $block );
 503                 if ( !isset( $nchanges[$n] ) ) {
 504                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 505                 }
 506
 507                 $sinceLast = 0;
 508                 $unvisitedOldid = null;
 509                 /** @var $rcObj RCCacheEntry */
 510                 foreach ( $block as $rcObj ) {
 511                         // Same logic as below inside main foreach
 512                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 513                                 $sinceLast++;
 514                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 515                         }
 516                 }
 517                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 518                         $sinceLastVisitMsg[$sinceLast] =
 519                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 520                 }
 521
 522                 $currentRevision = 0;
 523                 foreach ( $block as $rcObj ) {
 524                         if ( !$currentRevision ) {
 525                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 526                         }
 527                 }
 528
 529                 # Total change link
 530                 $links = [];
 531                 /** @var $block0 RecentChange */
 532                 $block0 = $block[0];
 533                 $last = $block[count( $block ) - 1];
 534                 if ( !$allLogs ) {
 535                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ||
 536                                 $isnew ||
 537                                 $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE
 538                         ) {
 539                                 $links['total-changes'] = $nchanges[$n];
 540                         } else {
 541                                 $links['total-changes'] = $this->linkRenderer->makeKnownLink(
 542                                         $block0->getTitle(),
 543                                         new HtmlArmor( $nchanges[$n] ),
 544                                         [ 'class' => 'mw-changeslist-groupdiff' ],
 545                                         $queryParams + [
 546                                                 'diff' => $currentRevision,
 547                                                 'oldid' => $last->mAttribs['rc_last_oldid'],
 548                                         ]
 549                                 );
 550                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 551                                         $links['total-changes-since-last'] = $this->linkRenderer->makeKnownLink(
 552                                                         $block0->getTitle(),
 553                                                         new HtmlArmor( $sinceLastVisitMsg[$sinceLast] ),
 554                                                         [ 'class' => 'mw-changeslist-groupdiff' ],
 555                                                         $queryParams + [
 556                                                                 'diff' => $currentRevision,
 557                                                                 'oldid' => $unvisitedOldid,
 558                                                         ]
 559                                                 );
 560                                 }
 561                         }
 562                 }
 563
 564                 # History
 565                 if ( $allLogs || $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE ) {
 566                         // don't show history link for logs
 567                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 568                         $links['history'] = $this->message['enhancedrc-history'];
 569                 } else {
 570                         $params = $queryParams;
 571                         $params['action'] = 'history';
 572
 573                         $links['history'] = $this->linkRenderer->makeKnownLink(
 574                                         $block0->getTitle(),
 575                                         new HtmlArmor( $this->message['enhancedrc-history'] ),
 576                                         [ 'class' => 'mw-changeslist-history' ],
 577                                         $params
 578                                 );
 579                 }
 580
 581                 # Allow others to alter, remove or add to these links
 582                 Hooks::run( 'EnhancedChangesList::getLogText',
 583                         [ $this, &$links, $block ] );
 584
 585                 if ( !$links ) {
 586                         return '';
 587                 }
 588
 589                 $logtext = implode( $this->message['pipe-separator'], $links );
 590                 $logtext = $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 591                 return ' ' . $logtext;
 592         }
 593
 594         /**
 595          * Enhanced RC ungrouped line.
 596          *
 597          * @param RecentChange|RCCacheEntry $rcObj
 598          * @return string A HTML formatted line (generated using $r)
 599          */
 600         protected function recentChangesBlockLine( $rcObj ) {
 601                 $data = [];
 602
 603                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 604
 605                 $type = $rcObj->mAttribs['rc_type'];
 606                 $logType = $rcObj->mAttribs['rc_log_type'];
 607                 $classes = $this->getHTMLClasses( $rcObj, $rcObj->watched );
 608                 $classes[] = 'mw-enhanced-rc';
 609
 610                 if ( $logType ) {
 611                         # Log entry
 612                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 613                 } else {
 614                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 615                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 616                 }
 617
 618                 # Flag and Timestamp
 619                 $data['recentChangesFlags'] = [
 620                         'newpage' => $type == RC_NEW,
 621                         'minor' => $rcObj->mAttribs['rc_minor'],
 622                         'unpatrolled' => $rcObj->unpatrolled,
 623                         'bot' => $rcObj->mAttribs['rc_bot'],
 624                 ];
 625                 // timestamp is not really a link here, but is called timestampLink
 626                 // for consistency with EnhancedChangesListModifyLineData
 627                 $data['timestampLink'] = $rcObj->timestamp;
 628
 629                 # Article or log link
 630                 if ( $logType ) {
 631                         $logPage = new LogPage( $logType );
 632                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 633                         $logName = $logPage->getName()->text();
 634                         $data['logLink'] = $this->msg( 'parentheses' )
 635                                 ->rawParams(
 636                                         $this->linkRenderer->makeKnownLink( $logTitle, $logName )
 637                                 )->escaped();
 638                 } else {
 639                         $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 640                 }
 641
 642                 # Diff and hist links
 643                 if ( $type != RC_LOG && $type != RC_CATEGORIZE ) {
 644                         $query['action'] = 'history';
 645                         $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 646                 }
 647                 $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator">. .</span> ';
 648
 649                 # Character diff
 650                 if ( $this->getConfig()->get( 'RCShowChangedSize' ) ) {
 651                         $cd = $this->formatCharacterDifference( $rcObj );
 652                         if ( $cd !== '' ) {
 653                                 $data['characterDiff'] = $cd;
 654                                 $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator">. .</span> ';
 655                         }
 656                 }
 657
 658                 if ( $type == RC_LOG ) {
 659                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 660                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 661                         $data['comment'] = $this->insertComment( $rcObj );
 662                 } else {
 663                         $data['userLink'] = $rcObj->userlink;
 664                         $data['userTalkLink'] = $rcObj->usertalklink;
 665                         $data['comment'] = $this->insertComment( $rcObj );
 666                         if ( $type == RC_CATEGORIZE ) {
 667                                 $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 668                         }
 669                         $data['rollback'] = $this->getRollback( $rcObj );
 670                 }
 671
 672                 # Tags
 673                 $data['tags'] = $this->getTags( $rcObj, $classes );
 674
 675                 # Show how many people are watching this if enabled
 676                 $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 677
 678                 $data['attribs'] = array_merge( $this->getDataAttributes( $rcObj ), [ 'class' => $classes ] );
 679
 680                 // give the hook a chance to modify the data
 681                 $success = Hooks::run( 'EnhancedChangesListModifyBlockLineData',
 682                         [ $this, &$data, $rcObj ] );
 683                 if ( !$success ) {
 684                         // skip entry if hook aborted it
 685                         return '';
 686                 }
 687                 $attribs = $data['attribs'];
 688                 unset( $data['attribs'] );
 689                 $attribs = wfArrayFilterByKey( $attribs, function ( $key ) {
 690                         return $key === 'class' || Sanitizer::isReservedDataAttribute( $key );
 691                 } );
 692
 693                 $line = Html::openElement( 'table', $attribs ) . Html::openElement( 'tr' );
 694                 $line .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 695
 696                 if ( isset( $data['recentChangesFlags'] ) ) {
 697                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 698                         unset( $data['recentChangesFlags'] );
 699                 }
 700
 701                 if ( isset( $data['timestampLink'] ) ) {
 702                         $line .= '&#160;' . $data['timestampLink'];
 703                         unset( $data['timestampLink'] );
 704                 }
 705                 $line .= '&#160;</td><td>';
 706
 707                 // everything else: makes it easier for extensions to add or remove data
 708                 $line .= implode( '', $data );
 709
 710                 $line .= "</td></tr></table>\n";
 711
 712                 return $line;
 713         }
 714
 715         /**
 716          * Returns value to be used in 'historyLink' element of $data param in
 717          * EnhancedChangesListModifyBlockLineData hook.
 718          *
 719          * @since 1.27
 720          *
 721          * @param RCCacheEntry $rc
 722          * @param array $query array of key/value pairs to append as a query string
 723          * @return string HTML
 724          */
 725         public function getDiffHistLinks( RCCacheEntry $rc, array $query ) {
 726                 $pageTitle = $rc->getTitle();
 727                 if ( $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE ) {
 728                         // For categorizations we must swap the category title with the page title!
 729                         $pageTitle = Title::newFromID( $rc->getAttribute( 'rc_cur_id' ) );
 730                         if ( !$pageTitle ) {
 731                                 // The page has been deleted, but the RC entry
 732                                 // deletion job has not run yet. Just skip.
 733                                 return '';
 734                         }
 735                 }
 736
 737                 $retVal = ' ' . $this->msg( 'parentheses' )
 738                                 ->rawParams( $rc->difflink . $this->message['pipe-separator']
 739                                         . $this->linkRenderer->makeKnownLink(
 740                                                 $pageTitle,
 741                                                 new HtmlArmor( $this->message['hist'] ),
 742                                                 [ 'class' => 'mw-changeslist-history' ],
 743                                                 $query
 744                                         ) )->escaped();
 745                 return $retVal;
 746         }
 747
 748         /**
 749          * If enhanced RC is in use, this function takes the previously cached
 750          * RC lines, arranges them, and outputs the HTML
 751          *
 752          * @return string
 753          */
 754         protected function recentChangesBlock() {
 755                 if ( count( $this->rc_cache ) == 0 ) {
 756                         return '';
 757                 }
 758
 759                 $blockOut = '';
 760                 foreach ( $this->rc_cache as $block ) {
 761                         if ( count( $block ) < 2 ) {
 762                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 763                         } else {
 764                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 765                         }
 766                 }
 767
 768                 if ( $blockOut === '' ) {
 769                         return '';
 770                 }
 771                 // $this->lastdate is kept up to date by recentChangesLine()
 772                 return Xml::element( 'h4', null, $this->lastdate ) . "\n<div>" . $blockOut . '</div>';
 773         }
 774
 775         /**
 776          * Returns text for the end of RC
 777          * If enhanced RC is in use, returns pretty much all the text
 778          * @return string
 779          */
 780         public function endRecentChangesList() {
 781                 return $this->recentChangesBlock() . '</div>';
 782         }
 783 }