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