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