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          * @param IContextSource|Skin $obj
  37          * @throws MWException
  38          */
  39         public function __construct( $obj ) {
  40                 if ( $obj instanceof Skin ) {
  41                         // @todo: deprecate constructing with Skin
  42                         $context = $obj->getContext();
  43                 } else {
  44                         if ( !$obj instanceof IContextSource ) {
  45                                 throw new MWException( 'EnhancedChangesList must be constructed with a '
  46                                         . 'context source or skin.' );
  47                         }
  48
  49                         $context = $obj;
  50                 }
  51
  52                 parent::__construct( $context );
  53
  54                 // message is set by the parent ChangesList class
  55                 $this->cacheEntryFactory = new RCCacheEntryFactory(
  56                         $context,
  57                         $this->message
  58                 );
  59         }
  60
  61         /**
  62          * Add the JavaScript file for enhanced changeslist
  63          * @return string
  64          */
  65         public function beginRecentChangesList() {
  66                 $this->rc_cache = [];
  67                 $this->rcMoveIndex = 0;
  68                 $this->rcCacheIndex = 0;
  69                 $this->lastdate = '';
  70                 $this->rclistOpen = false;
  71                 $this->getOutput()->addModuleStyles( [
  72                         'mediawiki.special.changeslist',
  73                         'mediawiki.special.changeslist.enhanced',
  74                 ] );
  75                 $this->getOutput()->addModules( [
  76                         'jquery.makeCollapsible',
  77                         'mediawiki.icon',
  78                 ] );
  79
  80                 return '<div class="mw-changeslist">';
  81         }
  82
  83         /**
  84          * Format a line for enhanced recentchange (aka with javascript and block of lines).
  85          *
  86          * @param RecentChange $rc
  87          * @param bool $watched
  88          * @param int $linenumber (default null)
  89          *
  90          * @return string
  91          */
  92         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
  93
  94                 $date = $this->getLanguage()->userDate(
  95                         $rc->mAttribs['rc_timestamp'],
  96                         $this->getUser()
  97                 );
  98
  99                 $ret = '';
 100
 101                 # If it's a new day, add the headline and flush the cache
 102                 if ( $date != $this->lastdate ) {
 103                         # Process current cache
 104                         $ret = $this->recentChangesBlock();
 105                         $this->rc_cache = [];
 106                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 107                         $this->lastdate = $date;
 108                 }
 109
 110                 $cacheEntry = $this->cacheEntryFactory->newFromRecentChange( $rc, $watched );
 111                 $this->addCacheEntry( $cacheEntry );
 112
 113                 return $ret;
 114         }
 115
 116         /**
 117          * Put accumulated information into the cache, for later display.
 118          * Page moves go on their own line.
 119          *
 120          * @param RCCacheEntry $cacheEntry
 121          */
 122         protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
 123                 $cacheGroupingKey = $this->makeCacheGroupingKey( $cacheEntry );
 124
 125                 if ( !isset( $this->rc_cache[$cacheGroupingKey] ) ) {
 126                         $this->rc_cache[$cacheGroupingKey] = [];
 127                 }
 128
 129                 array_push( $this->rc_cache[$cacheGroupingKey], $cacheEntry );
 130         }
 131
 132         /**
 133          * @todo use rc_source to group, if set; fallback to rc_type
 134          *
 135          * @param RCCacheEntry $cacheEntry
 136          *
 137          * @return string
 138          */
 139         protected function makeCacheGroupingKey( RCCacheEntry $cacheEntry ) {
 140                 $title = $cacheEntry->getTitle();
 141                 $cacheGroupingKey = $title->getPrefixedDBkey();
 142
 143                 $type = $cacheEntry->mAttribs['rc_type'];
 144
 145                 if ( $type == RC_LOG ) {
 146                         // Group by log type
 147                         $cacheGroupingKey = SpecialPage::getTitleFor(
 148                                 'Log',
 149                                 $cacheEntry->mAttribs['rc_log_type']
 150                         )->getPrefixedDBkey();
 151                 }
 152
 153                 return $cacheGroupingKey;
 154         }
 155
 156         /**
 157          * Enhanced RC group
 158          * @param RCCacheEntry[] $block
 159          * @return string
 160          */
 161         protected function recentChangesBlockGroup( $block ) {
 162
 163                 # Add the namespace and title of the block as part of the class
 164                 $tableClasses = [ 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' ];
 165                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 166                         # Log entry
 167                         $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 168                                 . $block[0]->mAttribs['rc_log_type'] );
 169                 } else {
 170                         $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 171                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 172                 }
 173                 if ( $block[0]->watched
 174                         && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 175                 ) {
 176                         $tableClasses[] = 'mw-changeslist-line-watched';
 177                 } else {
 178                         $tableClasses[] = 'mw-changeslist-line-not-watched';
 179                 }
 180
 181                 # Collate list of users
 182                 $userlinks = [];
 183                 # Other properties
 184                 $curId = 0;
 185                 # Some catalyst variables...
 186                 $namehidden = true;
 187                 $allLogs = true;
 188                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 189                 $collectedRcFlags = [
 190                         // All are by bots?
 191                         'bot' => true,
 192                         // Includes a new page?
 193                         'newpage' => false,
 194                         // All are minor edits?
 195                         'minor' => true,
 196                         // Contains an unpatrolled edit?
 197                         'unpatrolled' => false,
 198                 ];
 199                 foreach ( $block as $rcObj ) {
 200                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 201                                 $collectedRcFlags['newpage'] = true;
 202                         }
 203                         // If all log actions to this page were hidden, then don't
 204                         // give the name of the affected page for this block!
 205                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 206                                 $namehidden = false;
 207                         }
 208                         $u = $rcObj->userlink;
 209                         if ( !isset( $userlinks[$u] ) ) {
 210                                 $userlinks[$u] = 0;
 211                         }
 212                         if ( $rcObj->unpatrolled ) {
 213                                 $collectedRcFlags['unpatrolled'] = true;
 214                         }
 215                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 216                                 $allLogs = false;
 217                         }
 218                         # Get the latest entry with a page_id and oldid
 219                         # since logs may not have these.
 220                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 221                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 222                         }
 223
 224                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 225                                 $collectedRcFlags['bot'] = false;
 226                         }
 227                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 228                                 $collectedRcFlags['minor'] = false;
 229                         }
 230
 231                         $userlinks[$u]++;
 232                 }
 233
 234                 # Sort the list and convert to text
 235                 krsort( $userlinks );
 236                 asort( $userlinks );
 237                 $users = [];
 238                 foreach ( $userlinks as $userlink => $count ) {
 239                         $text = $userlink;
 240                         $text .= $this->getLanguage()->getDirMark();
 241                         if ( $count > 1 ) {
 242                                 // @todo FIXME: Hardcoded '×'. Should be a message.
 243                                 $formattedCount = $this->getLanguage()->formatNum( $count ) . '×';
 244                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 245                         }
 246                         array_push( $users, $text );
 247                 }
 248
 249                 # Article link
 250                 $articleLink = '';
 251                 $revDeletedMsg = false;
 252                 if ( $namehidden ) {
 253                         $revDeletedMsg = $this->msg( 'rev-deleted-event' )->escaped();
 254                 } elseif ( $allLogs ) {
 255                         $articleLink = $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 256                 } else {
 257                         $articleLink = $this->getArticleLink( $block[0], $block[0]->unpatrolled, $block[0]->watched );
 258                 }
 259
 260                 $queryParams['curid'] = $curId;
 261
 262                 # Sub-entries
 263                 $lines = [];
 264                 foreach ( $block as $i => $rcObj ) {
 265                         $line = $this->getLineData( $block, $rcObj, $queryParams );
 266                         if ( !$line ) {
 267                                 // completely ignore this RC entry if we don't want to render it
 268                                 unset( $block[$i] );
 269                         }
 270                         $lines[] = $line;
 271                 }
 272                 // Further down are some assumptions that $block is a 0-indexed array
 273                 // with (count-1) as last key. Let's make sure it is.
 274                 $block = array_values( $block );
 275
 276                 if ( empty( $block ) || !$lines ) {
 277                         // if we can't show anything, don't display this block altogether
 278                         return '';
 279                 }
 280
 281                 $logText = $this->getLogText( $block, $queryParams, $allLogs,
 282                         $collectedRcFlags['newpage'], $namehidden
 283                 );
 284
 285                 # Character difference (does not apply if only log items)
 286                 $charDifference = false;
 287                 if ( $RCShowChangedSize && !$allLogs ) {
 288                         $last = 0;
 289                         $first = count( $block ) - 1;
 290                         # Some events (like logs and category changes) have an "empty" size, so we need to skip those...
 291                         while ( $last < $first && (
 292                                         $block[$last]->mAttribs['rc_new_len'] === null ||
 293                                         # TODO kill the below check after March 2016 - https://phabricator.wikimedia.org/T126428
 294                                         $block[$last]->mAttribs['rc_type'] == RC_CATEGORIZE
 295                                 ) ) {
 296                                 $last++;
 297                         }
 298                         while ( $last < $first && (
 299                                         $block[$first]->mAttribs['rc_old_len'] === null ||
 300                                         # TODO kill the below check after March 2016 - https://phabricator.wikimedia.org/T126428
 301                                         $block[$first]->mAttribs['rc_type'] == RC_CATEGORIZE
 302                                 ) ) {
 303                                 $first--;
 304                         }
 305                         # Get net change
 306                         $charDifference = $this->formatCharacterDifference( $block[$first], $block[$last] );
 307                 }
 308
 309                 $numberofWatchingusers = $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
 310                 $usersList = $this->msg( 'brackets' )->rawParams(
 311                         implode( $this->message['semicolon-separator'], $users )
 312                 )->escaped();
 313
 314                 $templateParams = [
 315                         'articleLink' => $articleLink,
 316                         'charDifference' => $charDifference,
 317                         'collectedRcFlags' => $this->recentChangesFlags( $collectedRcFlags ),
 318                         'languageDirMark' => $this->getLanguage()->getDirMark(),
 319                         'lines' => $lines,
 320                         'logText' => $logText,
 321                         'numberofWatchingusers' => $numberofWatchingusers,
 322                         'rev-deleted-event' => $revDeletedMsg,
 323                         'tableClasses' => $tableClasses,
 324                         'timestamp' => $block[0]->timestamp,
 325                         'users' => $usersList,
 326                 ];
 327
 328                 $this->rcCacheIndex++;
 329
 330                 $templateParser = new TemplateParser();
 331                 return $templateParser->processTemplate(
 332                         'EnhancedChangesListGroup',
 333                         $templateParams
 334                 );
 335         }
 336
 337         /**
 338          * @param RCCacheEntry[] $block
 339          * @param RCCacheEntry $rcObj
 340          * @param array $queryParams
 341          * @return array
 342          * @throws Exception
 343          * @throws FatalError
 344          * @throws MWException
 345          */
 346         protected function getLineData( array $block, RCCacheEntry $rcObj, array $queryParams = [] ) {
 347                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 348
 349                 # Classes to apply -- TODO implement
 350                 $classes = [];
 351                 $type = $rcObj->mAttribs['rc_type'];
 352                 $data = [];
 353                 $lineParams = [];
 354
 355                 if ( $rcObj->watched
 356                         && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 357                 ) {
 358                         $lineParams['classes'] = [ 'mw-enhanced-watched' ];
 359                 }
 360                 $separator = ' <span class="mw-changeslist-separator">. .</span> ';
 361
 362                 $data['recentChangesFlags'] = [
 363                         'newpage' => $type == RC_NEW,
 364                         'minor' => $rcObj->mAttribs['rc_minor'],
 365                         'unpatrolled' => $rcObj->unpatrolled,
 366                         'bot' => $rcObj->mAttribs['rc_bot'],
 367                 ];
 368
 369                 $params = $queryParams;
 370
 371                 if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 372                         $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 373                 }
 374
 375                 # Log timestamp
 376                 if ( $type == RC_LOG ) {
 377                         $link = $rcObj->timestamp;
 378                         # Revision link
 379                 } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 380                         $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 381                 } else {
 382                         $link = Linker::linkKnown(
 383                                 $rcObj->getTitle(),
 384                                 $rcObj->timestamp,
 385                                 [],
 386                                 $params
 387                         );
 388                         if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 389                                 $link = '<span class="history-deleted">' . $link . '</span> ';
 390                         }
 391                 }
 392                 $data['timestampLink'] = $link;
 393
 394                 $currentAndLastLinks = '';
 395                 if ( !$type == RC_LOG || $type == RC_NEW ) {
 396                         $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
 397                                         $rcObj->curlink .
 398                                         $this->message['pipe-separator'] .
 399                                         $rcObj->lastlink
 400                                 )->escaped();
 401                 }
 402                 $data['currentAndLastLinks'] = $currentAndLastLinks;
 403                 $data['separatorAfterCurrentAndLastLinks'] = $separator;
 404
 405                 # Character diff
 406                 if ( $RCShowChangedSize ) {
 407                         $cd = $this->formatCharacterDifference( $rcObj );
 408                         if ( $cd !== '' ) {
 409                                 $data['characterDiff'] = $cd;
 410                                 $data['separatorAfterCharacterDiff'] = $separator;
 411                         }
 412                 }
 413
 414                 if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 415                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 416                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 417                         $data['comment'] = $this->insertComment( $rcObj );
 418                 } else {
 419                         # User links
 420                         $data['userLink'] = $rcObj->userlink;
 421                         $data['userTalkLink'] = $rcObj->usertalklink;
 422                         $data['comment'] = $this->insertComment( $rcObj );
 423                 }
 424
 425                 # Rollback
 426                 $data['rollback'] = $this->getRollback( $rcObj );
 427
 428                 # Tags
 429                 $data['tags'] = $this->getTags( $rcObj, $classes );
 430
 431                 // give the hook a chance to modify the data
 432                 $success = Hooks::run( 'EnhancedChangesListModifyLineData',
 433                         [ $this, &$data, $block, $rcObj ] );
 434                 if ( !$success ) {
 435                         // skip entry if hook aborted it
 436                         return [];
 437                 }
 438
 439                 if ( isset( $data['recentChangesFlags'] ) ) {
 440                         $lineParams['recentChangesFlags'] = $this->recentChangesFlags( $data['recentChangesFlags'] );
 441                         unset( $data['recentChangesFlags'] );
 442                 }
 443
 444                 if ( isset( $data['timestampLink'] ) ) {
 445                         $lineParams['timestampLink'] = $data['timestampLink'];
 446                         unset( $data['timestampLink'] );
 447                 }
 448
 449                 // everything else: makes it easier for extensions to add or remove data
 450                 $lineParams['data'] = array_values( $data );
 451
 452                 return $lineParams;
 453         }
 454
 455         /**
 456          * Generates amount of changes (linking to diff ) & link to history.
 457          *
 458          * @param array $block
 459          * @param array $queryParams
 460          * @param bool $allLogs
 461          * @param bool $isnew
 462          * @param bool $namehidden
 463          * @return string
 464          */
 465         protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
 466                 if ( empty( $block ) ) {
 467                         return '';
 468                 }
 469
 470                 # Changes message
 471                 static $nchanges = [];
 472                 static $sinceLastVisitMsg = [];
 473
 474                 $n = count( $block );
 475                 if ( !isset( $nchanges[$n] ) ) {
 476                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 477                 }
 478
 479                 $sinceLast = 0;
 480                 $unvisitedOldid = null;
 481                 /** @var $rcObj RCCacheEntry */
 482                 foreach ( $block as $rcObj ) {
 483                         // Same logic as below inside main foreach
 484                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 485                                 $sinceLast++;
 486                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 487                         }
 488                 }
 489                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 490                         $sinceLastVisitMsg[$sinceLast] =
 491                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 492                 }
 493
 494                 $currentRevision = 0;
 495                 foreach ( $block as $rcObj ) {
 496                         if ( !$currentRevision ) {
 497                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 498                         }
 499                 }
 500
 501                 # Total change link
 502                 $links = [];
 503                 /** @var $block0 RecentChange */
 504                 $block0 = $block[0];
 505                 $last = $block[count( $block ) - 1];
 506                 if ( !$allLogs && $rcObj->mAttribs['rc_type'] != RC_CATEGORIZE ) {
 507                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 508                                 $links['total-changes'] = $nchanges[$n];
 509                         } elseif ( $isnew ) {
 510                                 $links['total-changes'] = $nchanges[$n];
 511                         } else {
 512                                 $links['total-changes'] = Linker::link(
 513                                         $block0->getTitle(),
 514                                         $nchanges[$n],
 515                                         [],
 516                                         $queryParams + [
 517                                                 'diff' => $currentRevision,
 518                                                 'oldid' => $last->mAttribs['rc_last_oldid'],
 519                                         ],
 520                                         [ 'known', 'noclasses' ]
 521                                 );
 522                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 523                                         $links['total-changes-since-last'] = Linker::link(
 524                                                         $block0->getTitle(),
 525                                                         $sinceLastVisitMsg[$sinceLast],
 526                                                         [],
 527                                                         $queryParams + [
 528                                                                 'diff' => $currentRevision,
 529                                                                 'oldid' => $unvisitedOldid,
 530                                                         ],
 531                                                         [ 'known', 'noclasses' ]
 532                                                 );
 533                                 }
 534                         }
 535                 }
 536
 537                 # History
 538                 if ( $allLogs || $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE ) {
 539                         // don't show history link for logs
 540                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 541                         $links['history'] = $this->message['enhancedrc-history'];
 542                 } else {
 543                         $params = $queryParams;
 544                         $params['action'] = 'history';
 545
 546                         $links['history'] = Linker::linkKnown(
 547                                         $block0->getTitle(),
 548                                         $this->message['enhancedrc-history'],
 549                                         [],
 550                                         $params
 551                                 );
 552                 }
 553
 554                 # Allow others to alter, remove or add to these links
 555                 Hooks::run( 'EnhancedChangesList::getLogText',
 556                         [ $this, &$links, $block ] );
 557
 558                 if ( !$links ) {
 559                         return '';
 560                 }
 561
 562                 $logtext = implode( $this->message['pipe-separator'], $links );
 563                 $logtext = $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 564                 return ' ' . $logtext;
 565         }
 566
 567         /**
 568          * Enhanced RC ungrouped line.
 569          *
 570          * @param RecentChange|RCCacheEntry $rcObj
 571          * @return string A HTML formatted line (generated using $r)
 572          */
 573         protected function recentChangesBlockLine( $rcObj ) {
 574                 $data = [];
 575
 576                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 577
 578                 $type = $rcObj->mAttribs['rc_type'];
 579                 $logType = $rcObj->mAttribs['rc_log_type'];
 580                 $classes = [ 'mw-enhanced-rc' ];
 581                 if ( $logType ) {
 582                         # Log entry
 583                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 584                 } else {
 585                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 586                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 587                 }
 588                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 589                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 590
 591                 # Flag and Timestamp
 592                 $data['recentChangesFlags'] = [
 593                         'newpage' => $type == RC_NEW,
 594                         'minor' => $rcObj->mAttribs['rc_minor'],
 595                         'unpatrolled' => $rcObj->unpatrolled,
 596                         'bot' => $rcObj->mAttribs['rc_bot'],
 597                 ];
 598                 // timestamp is not really a link here, but is called timestampLink
 599                 // for consistency with EnhancedChangesListModifyLineData
 600                 $data['timestampLink'] = $rcObj->timestamp;
 601
 602                 # Article or log link
 603                 if ( $logType ) {
 604                         $logPage = new LogPage( $logType );
 605                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 606                         $logName = $logPage->getName()->escaped();
 607                         $data['logLink'] = $this->msg( 'parentheses' )
 608                                 ->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
 609                 } else {
 610                         $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 611                 }
 612
 613                 # Diff and hist links
 614                 if ( $type != RC_LOG && $type != RC_CATEGORIZE ) {
 615                         $query['action'] = 'history';
 616                         $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 617                 }
 618                 $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator">. .</span> ';
 619
 620                 # Character diff
 621                 if ( $this->getConfig()->get( 'RCShowChangedSize' ) ) {
 622                         $cd = $this->formatCharacterDifference( $rcObj );
 623                         if ( $cd !== '' ) {
 624                                 $data['characterDiff'] = $cd;
 625                                 $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator">. .</span> ';
 626                         }
 627                 }
 628
 629                 if ( $type == RC_LOG ) {
 630                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 631                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 632                         $data['comment'] = $this->insertComment( $rcObj );
 633                 } else {
 634                         $data['userLink'] = $rcObj->userlink;
 635                         $data['userTalkLink'] = $rcObj->usertalklink;
 636                         $data['comment'] = $this->insertComment( $rcObj );
 637                         if ( $type == RC_CATEGORIZE ) {
 638                                 $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 639                         }
 640                         $data['rollback'] = $this->getRollback( $rcObj );
 641                 }
 642
 643                 # Tags
 644                 $data['tags'] = $this->getTags( $rcObj, $classes );
 645
 646                 # Show how many people are watching this if enabled
 647                 $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 648
 649                 // give the hook a chance to modify the data
 650                 $success = Hooks::run( 'EnhancedChangesListModifyBlockLineData',
 651                         [ $this, &$data, $rcObj ] );
 652                 if ( !$success ) {
 653                         // skip entry if hook aborted it
 654                         return '';
 655                 }
 656
 657                 $line = Html::openElement( 'table', [ 'class' => $classes ] ) .
 658                         Html::openElement( 'tr' );
 659                 $line .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 660
 661                 if ( isset( $data['recentChangesFlags'] ) ) {
 662                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 663                         unset( $data['recentChangesFlags'] );
 664                 }
 665
 666                 if ( isset( $data['timestampLink'] ) ) {
 667                         $line .= '&#160;' . $data['timestampLink'];
 668                         unset( $data['timestampLink'] );
 669                 }
 670                 $line .= '&#160;</td><td>';
 671
 672                 // everything else: makes it easier for extensions to add or remove data
 673                 $line .= implode( '', $data );
 674
 675                 $line .= "</td></tr></table>\n";
 676
 677                 return $line;
 678         }
 679
 680         /**
 681          * Returns value to be used in 'historyLink' element of $data param in
 682          * EnhancedChangesListModifyBlockLineData hook.
 683          *
 684          * @since 1.27
 685          *
 686          * @param RCCacheEntry $rc
 687          * @param array $query array of key/value pairs to append as a query string
 688          * @return string HTML
 689          */
 690         public function getDiffHistLinks( RCCacheEntry $rc, array $query ) {
 691                 $pageTitle = $rc->getTitle();
 692                 if ( $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE ) {
 693                         // For categorizations we must swap the category title with the page title!
 694                         $pageTitle = Title::newFromID( $rc->getAttribute( 'rc_cur_id' ) );
 695                 }
 696
 697                 $retVal = ' ' . $this->msg( 'parentheses' )
 698                                 ->rawParams( $rc->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
 699                                                 $pageTitle,
 700                                                 $this->message['hist'],
 701                                                 [],
 702                                                 $query
 703                                         ) )->escaped();
 704                 return $retVal;
 705         }
 706
 707         /**
 708          * If enhanced RC is in use, this function takes the previously cached
 709          * RC lines, arranges them, and outputs the HTML
 710          *
 711          * @return string
 712          */
 713         protected function recentChangesBlock() {
 714                 if ( count( $this->rc_cache ) == 0 ) {
 715                         return '';
 716                 }
 717
 718                 $blockOut = '';
 719                 foreach ( $this->rc_cache as $block ) {
 720                         if ( count( $block ) < 2 ) {
 721                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 722                         } else {
 723                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 724                         }
 725                 }
 726
 727                 return '<div>' . $blockOut . '</div>';
 728         }
 729
 730         /**
 731          * Returns text for the end of RC
 732          * If enhanced RC is in use, returns pretty much all the text
 733          * @return string
 734          */
 735         public function endRecentChangesList() {
 736                 return $this->recentChangesBlock() . '</div>';
 737         }
 738 }