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                 $separator = ' <span class="mw-changeslist-separator">. .</span> ';
 373
 374                 $data['recentChangesFlags'] = [
 375                         'newpage' => $type == RC_NEW,
 376                         'minor' => $rcObj->mAttribs['rc_minor'],
 377                         'unpatrolled' => $rcObj->unpatrolled,
 378                         'bot' => $rcObj->mAttribs['rc_bot'],
 379                 ];
 380
 381                 $params = $queryParams;
 382
 383                 if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 384                         $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 385                 }
 386
 387                 # Log timestamp
 388                 if ( $type == RC_LOG ) {
 389                         $link = $rcObj->timestamp;
 390                         # Revision link
 391                 } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 392                         $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 393                 } else {
 394                         $link = $this->linkRenderer->makeKnownLink(
 395                                 $rcObj->getTitle(),
 396                                 new HtmlArmor( $rcObj->timestamp ),
 397                                 [],
 398                                 $params
 399                         );
 400                         if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 401                                 $link = '<span class="history-deleted">' . $link . '</span> ';
 402                         }
 403                 }
 404                 $data['timestampLink'] = $link;
 405
 406                 $currentAndLastLinks = '';
 407                 if ( !$type == RC_LOG || $type == RC_NEW ) {
 408                         $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
 409                                         $rcObj->curlink .
 410                                         $this->message['pipe-separator'] .
 411                                         $rcObj->lastlink
 412                                 )->escaped();
 413                 }
 414                 $data['currentAndLastLinks'] = $currentAndLastLinks;
 415                 $data['separatorAfterCurrentAndLastLinks'] = $separator;
 416
 417                 # Character diff
 418                 if ( $RCShowChangedSize ) {
 419                         $cd = $this->formatCharacterDifference( $rcObj );
 420                         if ( $cd !== '' ) {
 421                                 $data['characterDiff'] = $cd;
 422                                 $data['separatorAfterCharacterDiff'] = $separator;
 423                         }
 424                 }
 425
 426                 if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 427                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 428                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 429                         $data['comment'] = $this->insertComment( $rcObj );
 430                 } else {
 431                         # User links
 432                         $data['userLink'] = $rcObj->userlink;
 433                         $data['userTalkLink'] = $rcObj->usertalklink;
 434                         $data['comment'] = $this->insertComment( $rcObj );
 435                 }
 436
 437                 # Rollback
 438                 $data['rollback'] = $this->getRollback( $rcObj );
 439
 440                 # Tags
 441                 $data['tags'] = $this->getTags( $rcObj, $classes );
 442
 443                 // give the hook a chance to modify the data
 444                 $success = Hooks::run( 'EnhancedChangesListModifyLineData',
 445                         [ $this, &$data, $block, $rcObj ] );
 446                 if ( !$success ) {
 447                         // skip entry if hook aborted it
 448                         return [];
 449                 }
 450
 451                 $lineParams['recentChangesFlagsRaw'] = [];
 452                 if ( isset( $data['recentChangesFlags'] ) ) {
 453                         $lineParams['recentChangesFlags'] = $this->recentChangesFlags( $data['recentChangesFlags'] );
 454                         # FIXME: This is used by logic, don't return it in the template params.
 455                         $lineParams['recentChangesFlagsRaw'] = $data['recentChangesFlags'];
 456                         unset( $data['recentChangesFlags'] );
 457                 }
 458
 459                 if ( isset( $data['timestampLink'] ) ) {
 460                         $lineParams['timestampLink'] = $data['timestampLink'];
 461                         unset( $data['timestampLink'] );
 462                 }
 463
 464                 // everything else: makes it easier for extensions to add or remove data
 465                 $lineParams['data'] = array_values( $data );
 466
 467                 return $lineParams;
 468         }
 469
 470         /**
 471          * Generates amount of changes (linking to diff ) & link to history.
 472          *
 473          * @param array $block
 474          * @param array $queryParams
 475          * @param bool $allLogs
 476          * @param bool $isnew
 477          * @param bool $namehidden
 478          * @return string
 479          */
 480         protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
 481                 if ( empty( $block ) ) {
 482                         return '';
 483                 }
 484
 485                 # Changes message
 486                 static $nchanges = [];
 487                 static $sinceLastVisitMsg = [];
 488
 489                 $n = count( $block );
 490                 if ( !isset( $nchanges[$n] ) ) {
 491                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 492                 }
 493
 494                 $sinceLast = 0;
 495                 $unvisitedOldid = null;
 496                 /** @var $rcObj RCCacheEntry */
 497                 foreach ( $block as $rcObj ) {
 498                         // Same logic as below inside main foreach
 499                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 500                                 $sinceLast++;
 501                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 502                         }
 503                 }
 504                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 505                         $sinceLastVisitMsg[$sinceLast] =
 506                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 507                 }
 508
 509                 $currentRevision = 0;
 510                 foreach ( $block as $rcObj ) {
 511                         if ( !$currentRevision ) {
 512                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 513                         }
 514                 }
 515
 516                 # Total change link
 517                 $links = [];
 518                 /** @var $block0 RecentChange */
 519                 $block0 = $block[0];
 520                 $last = $block[count( $block ) - 1];
 521                 if ( !$allLogs ) {
 522                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ||
 523                                 $isnew ||
 524                                 $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE
 525                         ) {
 526                                 $links['total-changes'] = $nchanges[$n];
 527                         } else {
 528                                 $links['total-changes'] = $this->linkRenderer->makeKnownLink(
 529                                         $block0->getTitle(),
 530                                         new HtmlArmor( $nchanges[$n] ),
 531                                         [],
 532                                         $queryParams + [
 533                                                 'diff' => $currentRevision,
 534                                                 'oldid' => $last->mAttribs['rc_last_oldid'],
 535                                         ]
 536                                 );
 537                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 538                                         $links['total-changes-since-last'] = $this->linkRenderer->makeKnownLink(
 539                                                         $block0->getTitle(),
 540                                                         new HtmlArmor( $sinceLastVisitMsg[$sinceLast] ),
 541                                                         [],
 542                                                         $queryParams + [
 543                                                                 'diff' => $currentRevision,
 544                                                                 'oldid' => $unvisitedOldid,
 545                                                         ]
 546                                                 );
 547                                 }
 548                         }
 549                 }
 550
 551                 # History
 552                 if ( $allLogs || $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE ) {
 553                         // don't show history link for logs
 554                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 555                         $links['history'] = $this->message['enhancedrc-history'];
 556                 } else {
 557                         $params = $queryParams;
 558                         $params['action'] = 'history';
 559
 560                         $links['history'] = $this->linkRenderer->makeKnownLink(
 561                                         $block0->getTitle(),
 562                                         new HtmlArmor( $this->message['enhancedrc-history'] ),
 563                                         [],
 564                                         $params
 565                                 );
 566                 }
 567
 568                 # Allow others to alter, remove or add to these links
 569                 Hooks::run( 'EnhancedChangesList::getLogText',
 570                         [ $this, &$links, $block ] );
 571
 572                 if ( !$links ) {
 573                         return '';
 574                 }
 575
 576                 $logtext = implode( $this->message['pipe-separator'], $links );
 577                 $logtext = $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 578                 return ' ' . $logtext;
 579         }
 580
 581         /**
 582          * Enhanced RC ungrouped line.
 583          *
 584          * @param RecentChange|RCCacheEntry $rcObj
 585          * @return string A HTML formatted line (generated using $r)
 586          */
 587         protected function recentChangesBlockLine( $rcObj ) {
 588                 $data = [];
 589
 590                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 591
 592                 $type = $rcObj->mAttribs['rc_type'];
 593                 $logType = $rcObj->mAttribs['rc_log_type'];
 594                 $classes = $this->getHTMLClasses( $rcObj, $rcObj->watched );
 595                 $classes[] = 'mw-enhanced-rc';
 596
 597                 if ( $logType ) {
 598                         # Log entry
 599                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 600                 } else {
 601                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 602                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 603                 }
 604
 605                 # Flag and Timestamp
 606                 $data['recentChangesFlags'] = [
 607                         'newpage' => $type == RC_NEW,
 608                         'minor' => $rcObj->mAttribs['rc_minor'],
 609                         'unpatrolled' => $rcObj->unpatrolled,
 610                         'bot' => $rcObj->mAttribs['rc_bot'],
 611                 ];
 612                 // timestamp is not really a link here, but is called timestampLink
 613                 // for consistency with EnhancedChangesListModifyLineData
 614                 $data['timestampLink'] = $rcObj->timestamp;
 615
 616                 # Article or log link
 617                 if ( $logType ) {
 618                         $logPage = new LogPage( $logType );
 619                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 620                         $logName = $logPage->getName()->text();
 621                         $data['logLink'] = $this->msg( 'parentheses' )
 622                                 ->rawParams(
 623                                         $this->linkRenderer->makeKnownLink( $logTitle, $logName )
 624                                 )->escaped();
 625                 } else {
 626                         $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 627                 }
 628
 629                 # Diff and hist links
 630                 if ( $type != RC_LOG && $type != RC_CATEGORIZE ) {
 631                         $query['action'] = 'history';
 632                         $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 633                 }
 634                 $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator">. .</span> ';
 635
 636                 # Character diff
 637                 if ( $this->getConfig()->get( 'RCShowChangedSize' ) ) {
 638                         $cd = $this->formatCharacterDifference( $rcObj );
 639                         if ( $cd !== '' ) {
 640                                 $data['characterDiff'] = $cd;
 641                                 $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator">. .</span> ';
 642                         }
 643                 }
 644
 645                 if ( $type == RC_LOG ) {
 646                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 647                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 648                         $data['comment'] = $this->insertComment( $rcObj );
 649                 } else {
 650                         $data['userLink'] = $rcObj->userlink;
 651                         $data['userTalkLink'] = $rcObj->usertalklink;
 652                         $data['comment'] = $this->insertComment( $rcObj );
 653                         if ( $type == RC_CATEGORIZE ) {
 654                                 $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 655                         }
 656                         $data['rollback'] = $this->getRollback( $rcObj );
 657                 }
 658
 659                 # Tags
 660                 $data['tags'] = $this->getTags( $rcObj, $classes );
 661
 662                 # Show how many people are watching this if enabled
 663                 $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 664
 665                 // give the hook a chance to modify the data
 666                 $success = Hooks::run( 'EnhancedChangesListModifyBlockLineData',
 667                         [ $this, &$data, $rcObj ] );
 668                 if ( !$success ) {
 669                         // skip entry if hook aborted it
 670                         return '';
 671                 }
 672
 673                 $line = Html::openElement( 'table', [ 'class' => $classes ] ) .
 674                         Html::openElement( 'tr' );
 675                 $line .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 676
 677                 if ( isset( $data['recentChangesFlags'] ) ) {
 678                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 679                         unset( $data['recentChangesFlags'] );
 680                 }
 681
 682                 if ( isset( $data['timestampLink'] ) ) {
 683                         $line .= '&#160;' . $data['timestampLink'];
 684                         unset( $data['timestampLink'] );
 685                 }
 686                 $line .= '&#160;</td><td>';
 687
 688                 // everything else: makes it easier for extensions to add or remove data
 689                 $line .= implode( '', $data );
 690
 691                 $line .= "</td></tr></table>\n";
 692
 693                 return $line;
 694         }
 695
 696         /**
 697          * Returns value to be used in 'historyLink' element of $data param in
 698          * EnhancedChangesListModifyBlockLineData hook.
 699          *
 700          * @since 1.27
 701          *
 702          * @param RCCacheEntry $rc
 703          * @param array $query array of key/value pairs to append as a query string
 704          * @return string HTML
 705          */
 706         public function getDiffHistLinks( RCCacheEntry $rc, array $query ) {
 707                 $pageTitle = $rc->getTitle();
 708                 if ( $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE ) {
 709                         // For categorizations we must swap the category title with the page title!
 710                         $pageTitle = Title::newFromID( $rc->getAttribute( 'rc_cur_id' ) );
 711                 }
 712
 713                 $retVal = ' ' . $this->msg( 'parentheses' )
 714                                 ->rawParams( $rc->difflink . $this->message['pipe-separator']
 715                                         . $this->linkRenderer->makeKnownLink(
 716                                                 $pageTitle,
 717                                                 new HtmlArmor( $this->message['hist'] ),
 718                                                 [],
 719                                                 $query
 720                                         ) )->escaped();
 721                 return $retVal;
 722         }
 723
 724         /**
 725          * If enhanced RC is in use, this function takes the previously cached
 726          * RC lines, arranges them, and outputs the HTML
 727          *
 728          * @return string
 729          */
 730         protected function recentChangesBlock() {
 731                 if ( count( $this->rc_cache ) == 0 ) {
 732                         return '';
 733                 }
 734
 735                 $blockOut = '';
 736                 foreach ( $this->rc_cache as $block ) {
 737                         if ( count( $block ) < 2 ) {
 738                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 739                         } else {
 740                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 741                         }
 742                 }
 743
 744                 return '<div>' . $blockOut . '</div>';
 745         }
 746
 747         /**
 748          * Returns text for the end of RC
 749          * If enhanced RC is in use, returns pretty much all the text
 750          * @return string
 751          */
 752         public function endRecentChangesList() {
 753                 return $this->recentChangesBlock() . '</div>';
 754         }
 755 }