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                                 continue;
 266                         }
 267
 268                         // Roll up flags
 269                         foreach ( $line['recentChangesFlagsRaw'] as $key => $value ) {
 270                                 $flagGrouping = ( isset( $recentChangesFlags[$key]['grouping'] ) ?
 271                                         $recentChangesFlags[$key]['grouping'] : 'any' );
 272                                 switch ( $flagGrouping ) {
 273                                         case 'all':
 274                                                 if ( !$value ) {
 275                                                         $collectedRcFlags[$key] = false;
 276                                                 }
 277                                                 break;
 278                                         case 'any':
 279                                                 if ( $value ) {
 280                                                         $collectedRcFlags[$key] = true;
 281                                                 }
 282                                                 break;
 283                                         default:
 284                                                 throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
 285                                 }
 286                         }
 287
 288                         $lines[] = $line;
 289                 }
 290
 291                 // Further down are some assumptions that $block is a 0-indexed array
 292                 // with (count-1) as last key. Let's make sure it is.
 293                 $block = array_values( $block );
 294
 295                 if ( empty( $block ) || !$lines ) {
 296                         // if we can't show anything, don't display this block altogether
 297                         return '';
 298                 }
 299
 300                 $logText = $this->getLogText( $block, $queryParams, $allLogs,
 301                         $collectedRcFlags['newpage'], $namehidden
 302                 );
 303
 304                 # Character difference (does not apply if only log items)
 305                 $charDifference = false;
 306                 if ( $RCShowChangedSize && !$allLogs ) {
 307                         $last = 0;
 308                         $first = count( $block ) - 1;
 309                         # Some events (like logs and category changes) have an "empty" size, so we need to skip those...
 310                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 311                                 $last++;
 312                         }
 313                         while ( $last < $first && $block[$first]->mAttribs['rc_old_len'] === null ) {
 314                                 $first--;
 315                         }
 316                         # Get net change
 317                         $charDifference = $this->formatCharacterDifference( $block[$first], $block[$last] );
 318                 }
 319
 320                 $numberofWatchingusers = $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
 321                 $usersList = $this->msg( 'brackets' )->rawParams(
 322                         implode( $this->message['semicolon-separator'], $users )
 323                 )->escaped();
 324
 325                 $templateParams = [
 326                         'articleLink' => $articleLink,
 327                         'charDifference' => $charDifference,
 328                         'collectedRcFlags' => $this->recentChangesFlags( $collectedRcFlags ),
 329                         'languageDirMark' => $this->getLanguage()->getDirMark(),
 330                         'lines' => $lines,
 331                         'logText' => $logText,
 332                         'numberofWatchingusers' => $numberofWatchingusers,
 333                         'rev-deleted-event' => $revDeletedMsg,
 334                         'tableClasses' => $tableClasses,
 335                         'timestamp' => $block[0]->timestamp,
 336                         'users' => $usersList,
 337                 ];
 338
 339                 $this->rcCacheIndex++;
 340
 341                 $templateParser = new TemplateParser();
 342                 return $templateParser->processTemplate(
 343                         'EnhancedChangesListGroup',
 344                         $templateParams
 345                 );
 346         }
 347
 348         /**
 349          * @param RCCacheEntry[] $block
 350          * @param RCCacheEntry $rcObj
 351          * @param array $queryParams
 352          * @return array
 353          * @throws Exception
 354          * @throws FatalError
 355          * @throws MWException
 356          */
 357         protected function getLineData( array $block, RCCacheEntry $rcObj, array $queryParams = [] ) {
 358                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 359
 360                 # Classes to apply -- TODO implement
 361                 $classes = [];
 362                 $type = $rcObj->mAttribs['rc_type'];
 363                 $data = [];
 364                 $lineParams = [];
 365
 366                 if ( $rcObj->watched
 367                         && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 368                 ) {
 369                         $lineParams['classes'] = [ 'mw-enhanced-watched' ];
 370                 }
 371                 $separator = ' <span class="mw-changeslist-separator">. .</span> ';
 372
 373                 $data['recentChangesFlags'] = [
 374                         'newpage' => $type == RC_NEW,
 375                         'minor' => $rcObj->mAttribs['rc_minor'],
 376                         'unpatrolled' => $rcObj->unpatrolled,
 377                         'bot' => $rcObj->mAttribs['rc_bot'],
 378                 ];
 379
 380                 $params = $queryParams;
 381
 382                 if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 383                         $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 384                 }
 385
 386                 # Log timestamp
 387                 if ( $type == RC_LOG ) {
 388                         $link = $rcObj->timestamp;
 389                         # Revision link
 390                 } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 391                         $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 392                 } else {
 393                         $link = Linker::linkKnown(
 394                                 $rcObj->getTitle(),
 395                                 $rcObj->timestamp,
 396                                 [],
 397                                 $params
 398                         );
 399                         if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 400                                 $link = '<span class="history-deleted">' . $link . '</span> ';
 401                         }
 402                 }
 403                 $data['timestampLink'] = $link;
 404
 405                 $currentAndLastLinks = '';
 406                 if ( !$type == RC_LOG || $type == RC_NEW ) {
 407                         $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
 408                                         $rcObj->curlink .
 409                                         $this->message['pipe-separator'] .
 410                                         $rcObj->lastlink
 411                                 )->escaped();
 412                 }
 413                 $data['currentAndLastLinks'] = $currentAndLastLinks;
 414                 $data['separatorAfterCurrentAndLastLinks'] = $separator;
 415
 416                 # Character diff
 417                 if ( $RCShowChangedSize ) {
 418                         $cd = $this->formatCharacterDifference( $rcObj );
 419                         if ( $cd !== '' ) {
 420                                 $data['characterDiff'] = $cd;
 421                                 $data['separatorAfterCharacterDiff'] = $separator;
 422                         }
 423                 }
 424
 425                 if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 426                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 427                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 428                         $data['comment'] = $this->insertComment( $rcObj );
 429                 } else {
 430                         # User links
 431                         $data['userLink'] = $rcObj->userlink;
 432                         $data['userTalkLink'] = $rcObj->usertalklink;
 433                         $data['comment'] = $this->insertComment( $rcObj );
 434                 }
 435
 436                 # Rollback
 437                 $data['rollback'] = $this->getRollback( $rcObj );
 438
 439                 # Tags
 440                 $data['tags'] = $this->getTags( $rcObj, $classes );
 441
 442                 // give the hook a chance to modify the data
 443                 $success = Hooks::run( 'EnhancedChangesListModifyLineData',
 444                         [ $this, &$data, $block, $rcObj ] );
 445                 if ( !$success ) {
 446                         // skip entry if hook aborted it
 447                         return [];
 448                 }
 449
 450                 $lineParams['recentChangesFlagsRaw'] = [];
 451                 if ( isset( $data['recentChangesFlags'] ) ) {
 452                         $lineParams['recentChangesFlags'] = $this->recentChangesFlags( $data['recentChangesFlags'] );
 453                         # FIXME: This is used by logic, don't return it in the template params.
 454                         $lineParams['recentChangesFlagsRaw'] = $data['recentChangesFlags'];
 455                         unset( $data['recentChangesFlags'] );
 456                 }
 457
 458                 if ( isset( $data['timestampLink'] ) ) {
 459                         $lineParams['timestampLink'] = $data['timestampLink'];
 460                         unset( $data['timestampLink'] );
 461                 }
 462
 463                 // everything else: makes it easier for extensions to add or remove data
 464                 $lineParams['data'] = array_values( $data );
 465
 466                 return $lineParams;
 467         }
 468
 469         /**
 470          * Generates amount of changes (linking to diff ) & link to history.
 471          *
 472          * @param array $block
 473          * @param array $queryParams
 474          * @param bool $allLogs
 475          * @param bool $isnew
 476          * @param bool $namehidden
 477          * @return string
 478          */
 479         protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
 480                 if ( empty( $block ) ) {
 481                         return '';
 482                 }
 483
 484                 # Changes message
 485                 static $nchanges = [];
 486                 static $sinceLastVisitMsg = [];
 487
 488                 $n = count( $block );
 489                 if ( !isset( $nchanges[$n] ) ) {
 490                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 491                 }
 492
 493                 $sinceLast = 0;
 494                 $unvisitedOldid = null;
 495                 /** @var $rcObj RCCacheEntry */
 496                 foreach ( $block as $rcObj ) {
 497                         // Same logic as below inside main foreach
 498                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 499                                 $sinceLast++;
 500                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 501                         }
 502                 }
 503                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 504                         $sinceLastVisitMsg[$sinceLast] =
 505                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 506                 }
 507
 508                 $currentRevision = 0;
 509                 foreach ( $block as $rcObj ) {
 510                         if ( !$currentRevision ) {
 511                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 512                         }
 513                 }
 514
 515                 # Total change link
 516                 $links = [];
 517                 /** @var $block0 RecentChange */
 518                 $block0 = $block[0];
 519                 $last = $block[count( $block ) - 1];
 520                 if ( !$allLogs ) {
 521                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ||
 522                                 $isnew ||
 523                                 $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE
 524                         ) {
 525                                 $links['total-changes'] = $nchanges[$n];
 526                         } else {
 527                                 $links['total-changes'] = Linker::link(
 528                                         $block0->getTitle(),
 529                                         $nchanges[$n],
 530                                         [],
 531                                         $queryParams + [
 532                                                 'diff' => $currentRevision,
 533                                                 'oldid' => $last->mAttribs['rc_last_oldid'],
 534                                         ],
 535                                         [ 'known', 'noclasses' ]
 536                                 );
 537                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 538                                         $links['total-changes-since-last'] = Linker::link(
 539                                                         $block0->getTitle(),
 540                                                         $sinceLastVisitMsg[$sinceLast],
 541                                                         [],
 542                                                         $queryParams + [
 543                                                                 'diff' => $currentRevision,
 544                                                                 'oldid' => $unvisitedOldid,
 545                                                         ],
 546                                                         [ 'known', 'noclasses' ]
 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'] = Linker::linkKnown(
 562                                         $block0->getTitle(),
 563                                         $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()->escaped();
 622                         $data['logLink'] = $this->msg( 'parentheses' )
 623                                 ->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
 624                 } else {
 625                         $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 626                 }
 627
 628                 # Diff and hist links
 629                 if ( $type != RC_LOG && $type != RC_CATEGORIZE ) {
 630                         $query['action'] = 'history';
 631                         $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 632                 }
 633                 $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator">. .</span> ';
 634
 635                 # Character diff
 636                 if ( $this->getConfig()->get( 'RCShowChangedSize' ) ) {
 637                         $cd = $this->formatCharacterDifference( $rcObj );
 638                         if ( $cd !== '' ) {
 639                                 $data['characterDiff'] = $cd;
 640                                 $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator">. .</span> ';
 641                         }
 642                 }
 643
 644                 if ( $type == RC_LOG ) {
 645                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 646                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 647                         $data['comment'] = $this->insertComment( $rcObj );
 648                 } else {
 649                         $data['userLink'] = $rcObj->userlink;
 650                         $data['userTalkLink'] = $rcObj->usertalklink;
 651                         $data['comment'] = $this->insertComment( $rcObj );
 652                         if ( $type == RC_CATEGORIZE ) {
 653                                 $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 654                         }
 655                         $data['rollback'] = $this->getRollback( $rcObj );
 656                 }
 657
 658                 # Tags
 659                 $data['tags'] = $this->getTags( $rcObj, $classes );
 660
 661                 # Show how many people are watching this if enabled
 662                 $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 663
 664                 // give the hook a chance to modify the data
 665                 $success = Hooks::run( 'EnhancedChangesListModifyBlockLineData',
 666                         [ $this, &$data, $rcObj ] );
 667                 if ( !$success ) {
 668                         // skip entry if hook aborted it
 669                         return '';
 670                 }
 671
 672                 $line = Html::openElement( 'table', [ 'class' => $classes ] ) .
 673                         Html::openElement( 'tr' );
 674                 $line .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 675
 676                 if ( isset( $data['recentChangesFlags'] ) ) {
 677                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 678                         unset( $data['recentChangesFlags'] );
 679                 }
 680
 681                 if ( isset( $data['timestampLink'] ) ) {
 682                         $line .= '&#160;' . $data['timestampLink'];
 683                         unset( $data['timestampLink'] );
 684                 }
 685                 $line .= '&#160;</td><td>';
 686
 687                 // everything else: makes it easier for extensions to add or remove data
 688                 $line .= implode( '', $data );
 689
 690                 $line .= "</td></tr></table>\n";
 691
 692                 return $line;
 693         }
 694
 695         /**
 696          * Returns value to be used in 'historyLink' element of $data param in
 697          * EnhancedChangesListModifyBlockLineData hook.
 698          *
 699          * @since 1.27
 700          *
 701          * @param RCCacheEntry $rc
 702          * @param array $query array of key/value pairs to append as a query string
 703          * @return string HTML
 704          */
 705         public function getDiffHistLinks( RCCacheEntry $rc, array $query ) {
 706                 $pageTitle = $rc->getTitle();
 707                 if ( $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE ) {
 708                         // For categorizations we must swap the category title with the page title!
 709                         $pageTitle = Title::newFromID( $rc->getAttribute( 'rc_cur_id' ) );
 710                 }
 711
 712                 $retVal = ' ' . $this->msg( 'parentheses' )
 713                                 ->rawParams( $rc->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
 714                                                 $pageTitle,
 715                                                 $this->message['hist'],
 716                                                 [],
 717                                                 $query
 718                                         ) )->escaped();
 719                 return $retVal;
 720         }
 721
 722         /**
 723          * If enhanced RC is in use, this function takes the previously cached
 724          * RC lines, arranges them, and outputs the HTML
 725          *
 726          * @return string
 727          */
 728         protected function recentChangesBlock() {
 729                 if ( count( $this->rc_cache ) == 0 ) {
 730                         return '';
 731                 }
 732
 733                 $blockOut = '';
 734                 foreach ( $this->rc_cache as $block ) {
 735                         if ( count( $block ) < 2 ) {
 736                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 737                         } else {
 738                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 739                         }
 740                 }
 741
 742                 return '<div>' . $blockOut . '</div>';
 743         }
 744
 745         /**
 746          * Returns text for the end of RC
 747          * If enhanced RC is in use, returns pretty much all the text
 748          * @return string
 749          */
 750         public function endRecentChangesList() {
 751                 return $this->recentChangesBlock() . '</div>';
 752         }
 753 }