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          * @param array $filterGroups Array of ChangesListFilterGroup objects (currently optional)
  38          * @throws MWException
  39          */
  40         public function __construct( $obj, array $filterGroups = [] ) {
  41                 if ( $obj instanceof Skin ) {
  42                         // @todo: deprecate constructing with Skin
  43                         $context = $obj->getContext();
  44                 } else {
  45                         if ( !$obj instanceof IContextSource ) {
  46                                 throw new MWException( 'EnhancedChangesList must be constructed with a '
  47                                         . 'context source or skin.' );
  48                         }
  49
  50                         $context = $obj;
  51                 }
  52
  53                 parent::__construct( $context, $filterGroups );
  54
  55                 // message is set by the parent ChangesList class
  56                 $this->cacheEntryFactory = new RCCacheEntryFactory(
  57                         $context,
  58                         $this->message,
  59                         $this->linkRenderer
  60                 );
  61         }
  62
  63         /**
  64          * Add the JavaScript file for enhanced changeslist
  65          * @return string
  66          */
  67         public function beginRecentChangesList() {
  68                 $this->rc_cache = [];
  69                 $this->rcMoveIndex = 0;
  70                 $this->rcCacheIndex = 0;
  71                 $this->lastdate = '';
  72                 $this->rclistOpen = false;
  73                 $this->getOutput()->addModuleStyles( [
  74                         'mediawiki.special.changeslist',
  75                         'mediawiki.special.changeslist.enhanced',
  76                 ] );
  77                 $this->getOutput()->addModules( [
  78                         'jquery.makeCollapsible',
  79                         'mediawiki.icon',
  80                 ] );
  81
  82                 return '<div class="mw-changeslist">';
  83         }
  84
  85         /**
  86          * Format a line for enhanced recentchange (aka with javascript and block of lines).
  87          *
  88          * @param RecentChange $rc
  89          * @param bool $watched
  90          * @param int $linenumber (default null)
  91          *
  92          * @return string
  93          */
  94         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
  95
  96                 $date = $this->getLanguage()->userDate(
  97                         $rc->mAttribs['rc_timestamp'],
  98                         $this->getUser()
  99                 );
 100
 101                 $ret = '';
 102
 103                 # If it's a new day, add the headline and flush the cache
 104                 if ( $date != $this->lastdate ) {
 105                         # Process current cache
 106                         $ret = $this->recentChangesBlock();
 107                         $this->rc_cache = [];
 108                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 109                         $this->lastdate = $date;
 110                 }
 111
 112                 $cacheEntry = $this->cacheEntryFactory->newFromRecentChange( $rc, $watched );
 113                 $this->addCacheEntry( $cacheEntry );
 114
 115                 return $ret;
 116         }
 117
 118         /**
 119          * Put accumulated information into the cache, for later display.
 120          * Page moves go on their own line.
 121          *
 122          * @param RCCacheEntry $cacheEntry
 123          */
 124         protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
 125                 $cacheGroupingKey = $this->makeCacheGroupingKey( $cacheEntry );
 126
 127                 if ( !isset( $this->rc_cache[$cacheGroupingKey] ) ) {
 128                         $this->rc_cache[$cacheGroupingKey] = [];
 129                 }
 130
 131                 array_push( $this->rc_cache[$cacheGroupingKey], $cacheEntry );
 132         }
 133
 134         /**
 135          * @todo use rc_source to group, if set; fallback to rc_type
 136          *
 137          * @param RCCacheEntry $cacheEntry
 138          *
 139          * @return string
 140          */
 141         protected function makeCacheGroupingKey( RCCacheEntry $cacheEntry ) {
 142                 $title = $cacheEntry->getTitle();
 143                 $cacheGroupingKey = $title->getPrefixedDBkey();
 144
 145                 $type = $cacheEntry->mAttribs['rc_type'];
 146
 147                 if ( $type == RC_LOG ) {
 148                         // Group by log type
 149                         $cacheGroupingKey = SpecialPage::getTitleFor(
 150                                 'Log',
 151                                 $cacheEntry->mAttribs['rc_log_type']
 152                         )->getPrefixedDBkey();
 153                 }
 154
 155                 return $cacheGroupingKey;
 156         }
 157
 158         /**
 159          * Enhanced RC group
 160          * @param RCCacheEntry[] $block
 161          * @return string
 162          * @throws DomainException
 163          */
 164         protected function recentChangesBlockGroup( $block ) {
 165                 $recentChangesFlags = $this->getConfig()->get( 'RecentChangesFlags' );
 166
 167                 # Add the namespace and title of the block as part of the class
 168                 $tableClasses = [ 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' ];
 169                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 170                         # Log entry
 171                         $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 172                                 . $block[0]->mAttribs['rc_log_type'] );
 173                 } else {
 174                         $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 175                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 176                 }
 177                 if ( $block[0]->watched
 178                         && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 179                 ) {
 180                         $tableClasses[] = 'mw-changeslist-line-watched';
 181                 } else {
 182                         $tableClasses[] = 'mw-changeslist-line-not-watched';
 183                 }
 184
 185                 # Collate list of users
 186                 $userlinks = [];
 187                 # Other properties
 188                 $curId = 0;
 189                 # Some catalyst variables...
 190                 $namehidden = true;
 191                 $allLogs = true;
 192                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 193
 194                 # Default values for RC flags
 195                 $collectedRcFlags = [];
 196                 foreach ( $recentChangesFlags as $key => $value ) {
 197                         $flagGrouping = ( isset( $recentChangesFlags[$key]['grouping'] ) ?
 198                                         $recentChangesFlags[$key]['grouping'] : 'any' );
 199                         switch ( $flagGrouping ) {
 200                                 case 'all':
 201                                         $collectedRcFlags[$key] = true;
 202                                         break;
 203                                 case 'any':
 204                                         $collectedRcFlags[$key] = false;
 205                                         break;
 206                                 default:
 207                                         throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
 208                         }
 209                 }
 210                 foreach ( $block as $rcObj ) {
 211                         // If all log actions to this page were hidden, then don't
 212                         // give the name of the affected page for this block!
 213                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 214                                 $namehidden = false;
 215                         }
 216                         $u = $rcObj->userlink;
 217                         if ( !isset( $userlinks[$u] ) ) {
 218                                 $userlinks[$u] = 0;
 219                         }
 220                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 221                                 $allLogs = false;
 222                         }
 223                         # Get the latest entry with a page_id and oldid
 224                         # since logs may not have these.
 225                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 226                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 227                         }
 228
 229                         $userlinks[$u]++;
 230                 }
 231
 232                 # Sort the list and convert to text
 233                 krsort( $userlinks );
 234                 asort( $userlinks );
 235                 $users = [];
 236                 foreach ( $userlinks as $userlink => $count ) {
 237                         $text = $userlink;
 238                         $text .= $this->getLanguage()->getDirMark();
 239                         if ( $count > 1 ) {
 240                                 // @todo FIXME: Hardcoded '×'. Should be a message.
 241                                 $formattedCount = $this->getLanguage()->formatNum( $count ) . '×';
 242                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 243                         }
 244                         array_push( $users, $text );
 245                 }
 246
 247                 # Article link
 248                 $articleLink = '';
 249                 $revDeletedMsg = false;
 250                 if ( $namehidden ) {
 251                         $revDeletedMsg = $this->msg( 'rev-deleted-event' )->escaped();
 252                 } elseif ( $allLogs ) {
 253                         $articleLink = $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 254                 } else {
 255                         $articleLink = $this->getArticleLink( $block[0], $block[0]->unpatrolled, $block[0]->watched );
 256                 }
 257
 258                 $queryParams['curid'] = $curId;
 259
 260                 # Sub-entries
 261                 $lines = [];
 262                 foreach ( $block as $i => $rcObj ) {
 263                         $line = $this->getLineData( $block, $rcObj, $queryParams );
 264                         if ( !$line ) {
 265                                 // completely ignore this RC entry if we don't want to render it
 266                                 unset( $block[$i] );
 267                                 continue;
 268                         }
 269
 270                         // Roll up flags
 271                         foreach ( $line['recentChangesFlagsRaw'] as $key => $value ) {
 272                                 $flagGrouping = ( isset( $recentChangesFlags[$key]['grouping'] ) ?
 273                                         $recentChangesFlags[$key]['grouping'] : 'any' );
 274                                 switch ( $flagGrouping ) {
 275                                         case 'all':
 276                                                 if ( !$value ) {
 277                                                         $collectedRcFlags[$key] = false;
 278                                                 }
 279                                                 break;
 280                                         case 'any':
 281                                                 if ( $value ) {
 282                                                         $collectedRcFlags[$key] = true;
 283                                                 }
 284                                                 break;
 285                                         default:
 286                                                 throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
 287                                 }
 288                         }
 289
 290                         $lines[] = $line;
 291                 }
 292
 293                 // Further down are some assumptions that $block is a 0-indexed array
 294                 // with (count-1) as last key. Let's make sure it is.
 295                 $block = array_values( $block );
 296
 297                 if ( empty( $block ) || !$lines ) {
 298                         // if we can't show anything, don't display this block altogether
 299                         return '';
 300                 }
 301
 302                 $logText = $this->getLogText( $block, $queryParams, $allLogs,
 303                         $collectedRcFlags['newpage'], $namehidden
 304                 );
 305
 306                 # Character difference (does not apply if only log items)
 307                 $charDifference = false;
 308                 if ( $RCShowChangedSize && !$allLogs ) {
 309                         $last = 0;
 310                         $first = count( $block ) - 1;
 311                         # Some events (like logs and category changes) have an "empty" size, so we need to skip those...
 312                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 313                                 $last++;
 314                         }
 315                         while ( $last < $first && $block[$first]->mAttribs['rc_old_len'] === null ) {
 316                                 $first--;
 317                         }
 318                         # Get net change
 319                         $charDifference = $this->formatCharacterDifference( $block[$first], $block[$last] );
 320                 }
 321
 322                 $numberofWatchingusers = $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
 323                 $usersList = $this->msg( 'brackets' )->rawParams(
 324                         implode( $this->message['semicolon-separator'], $users )
 325                 )->escaped();
 326
 327                 $templateParams = [
 328                         'articleLink' => $articleLink,
 329                         'charDifference' => $charDifference,
 330                         'collectedRcFlags' => $this->recentChangesFlags( $collectedRcFlags ),
 331                         'languageDirMark' => $this->getLanguage()->getDirMark(),
 332                         'lines' => $lines,
 333                         'logText' => $logText,
 334                         'numberofWatchingusers' => $numberofWatchingusers,
 335                         'rev-deleted-event' => $revDeletedMsg,
 336                         'tableClasses' => $tableClasses,
 337                         'timestamp' => $block[0]->timestamp,
 338                         'users' => $usersList,
 339                 ];
 340
 341                 $this->rcCacheIndex++;
 342
 343                 $templateParser = new TemplateParser();
 344                 return $templateParser->processTemplate(
 345                         'EnhancedChangesListGroup',
 346                         $templateParams
 347                 );
 348         }
 349
 350         /**
 351          * @param RCCacheEntry[] $block
 352          * @param RCCacheEntry $rcObj
 353          * @param array $queryParams
 354          * @return array
 355          * @throws Exception
 356          * @throws FatalError
 357          * @throws MWException
 358          */
 359         protected function getLineData( array $block, RCCacheEntry $rcObj, array $queryParams = [] ) {
 360                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 361
 362                 $type = $rcObj->mAttribs['rc_type'];
 363                 $data = [];
 364                 $lineParams = [];
 365
 366                 $classes = [ 'mw-enhanced-rc' ];
 367                 if ( $rcObj->watched
 368                         && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 369                 ) {
 370                         $classes[] = 'mw-enhanced-watched';
 371                 }
 372                 $classes = array_merge( $classes, $this->getHTMLClassesForFilters( $rcObj ) );
 373
 374                 $separator = ' <span class="mw-changeslist-separator">. .</span> ';
 375
 376                 $data['recentChangesFlags'] = [
 377                         'newpage' => $type == RC_NEW,
 378                         'minor' => $rcObj->mAttribs['rc_minor'],
 379                         'unpatrolled' => $rcObj->unpatrolled,
 380                         'bot' => $rcObj->mAttribs['rc_bot'],
 381                 ];
 382
 383                 $params = $queryParams;
 384
 385                 if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 386                         $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 387                 }
 388
 389                 # Log timestamp
 390                 if ( $type == RC_LOG ) {
 391                         $link = $rcObj->timestamp;
 392                         # Revision link
 393                 } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 394                         $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 395                 } else {
 396                         $link = $this->linkRenderer->makeKnownLink(
 397                                 $rcObj->getTitle(),
 398                                 new HtmlArmor( $rcObj->timestamp ),
 399                                 [],
 400                                 $params
 401                         );
 402                         if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 403                                 $link = '<span class="history-deleted">' . $link . '</span> ';
 404                         }
 405                 }
 406                 $data['timestampLink'] = $link;
 407
 408                 $currentAndLastLinks = '';
 409                 if ( !$type == RC_LOG || $type == RC_NEW ) {
 410                         $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
 411                                         $rcObj->curlink .
 412                                         $this->message['pipe-separator'] .
 413                                         $rcObj->lastlink
 414                                 )->escaped();
 415                 }
 416                 $data['currentAndLastLinks'] = $currentAndLastLinks;
 417                 $data['separatorAfterCurrentAndLastLinks'] = $separator;
 418
 419                 # Character diff
 420                 if ( $RCShowChangedSize ) {
 421                         $cd = $this->formatCharacterDifference( $rcObj );
 422                         if ( $cd !== '' ) {
 423                                 $data['characterDiff'] = $cd;
 424                                 $data['separatorAfterCharacterDiff'] = $separator;
 425                         }
 426                 }
 427
 428                 if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 429                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 430                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 431                         $data['comment'] = $this->insertComment( $rcObj );
 432                 } else {
 433                         # User links
 434                         $data['userLink'] = $rcObj->userlink;
 435                         $data['userTalkLink'] = $rcObj->usertalklink;
 436                         $data['comment'] = $this->insertComment( $rcObj );
 437                 }
 438
 439                 # Rollback
 440                 $data['rollback'] = $this->getRollback( $rcObj );
 441
 442                 # Tags
 443                 $data['tags'] = $this->getTags( $rcObj, $classes );
 444
 445                 // give the hook a chance to modify the data
 446                 $success = Hooks::run( 'EnhancedChangesListModifyLineData',
 447                         [ $this, &$data, $block, $rcObj, &$classes ] );
 448                 if ( !$success ) {
 449                         // skip entry if hook aborted it
 450                         return [];
 451                 }
 452
 453                 $lineParams['recentChangesFlagsRaw'] = [];
 454                 if ( isset( $data['recentChangesFlags'] ) ) {
 455                         $lineParams['recentChangesFlags'] = $this->recentChangesFlags( $data['recentChangesFlags'] );
 456                         # FIXME: This is used by logic, don't return it in the template params.
 457                         $lineParams['recentChangesFlagsRaw'] = $data['recentChangesFlags'];
 458                         unset( $data['recentChangesFlags'] );
 459                 }
 460
 461                 if ( isset( $data['timestampLink'] ) ) {
 462                         $lineParams['timestampLink'] = $data['timestampLink'];
 463                         unset( $data['timestampLink'] );
 464                 }
 465
 466                 $lineParams['classes'] = array_values( $classes );
 467
 468                 // everything else: makes it easier for extensions to add or remove data
 469                 $lineParams['data'] = array_values( $data );
 470
 471                 return $lineParams;
 472         }
 473
 474         /**
 475          * Generates amount of changes (linking to diff ) & link to history.
 476          *
 477          * @param array $block
 478          * @param array $queryParams
 479          * @param bool $allLogs
 480          * @param bool $isnew
 481          * @param bool $namehidden
 482          * @return string
 483          */
 484         protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
 485                 if ( empty( $block ) ) {
 486                         return '';
 487                 }
 488
 489                 # Changes message
 490                 static $nchanges = [];
 491                 static $sinceLastVisitMsg = [];
 492
 493                 $n = count( $block );
 494                 if ( !isset( $nchanges[$n] ) ) {
 495                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 496                 }
 497
 498                 $sinceLast = 0;
 499                 $unvisitedOldid = null;
 500                 /** @var $rcObj RCCacheEntry */
 501                 foreach ( $block as $rcObj ) {
 502                         // Same logic as below inside main foreach
 503                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 504                                 $sinceLast++;
 505                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 506                         }
 507                 }
 508                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 509                         $sinceLastVisitMsg[$sinceLast] =
 510                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 511                 }
 512
 513                 $currentRevision = 0;
 514                 foreach ( $block as $rcObj ) {
 515                         if ( !$currentRevision ) {
 516                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 517                         }
 518                 }
 519
 520                 # Total change link
 521                 $links = [];
 522                 /** @var $block0 RecentChange */
 523                 $block0 = $block[0];
 524                 $last = $block[count( $block ) - 1];
 525                 if ( !$allLogs ) {
 526                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ||
 527                                 $isnew ||
 528                                 $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE
 529                         ) {
 530                                 $links['total-changes'] = $nchanges[$n];
 531                         } else {
 532                                 $links['total-changes'] = $this->linkRenderer->makeKnownLink(
 533                                         $block0->getTitle(),
 534                                         new HtmlArmor( $nchanges[$n] ),
 535                                         [ 'class' => 'mw-changeslist-groupdiff' ],
 536                                         $queryParams + [
 537                                                 'diff' => $currentRevision,
 538                                                 'oldid' => $last->mAttribs['rc_last_oldid'],
 539                                         ]
 540                                 );
 541                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 542                                         $links['total-changes-since-last'] = $this->linkRenderer->makeKnownLink(
 543                                                         $block0->getTitle(),
 544                                                         new HtmlArmor( $sinceLastVisitMsg[$sinceLast] ),
 545                                                         [ 'class' => 'mw-changeslist-groupdiff' ],
 546                                                         $queryParams + [
 547                                                                 'diff' => $currentRevision,
 548                                                                 'oldid' => $unvisitedOldid,
 549                                                         ]
 550                                                 );
 551                                 }
 552                         }
 553                 }
 554
 555                 # History
 556                 if ( $allLogs || $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE ) {
 557                         // don't show history link for logs
 558                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 559                         $links['history'] = $this->message['enhancedrc-history'];
 560                 } else {
 561                         $params = $queryParams;
 562                         $params['action'] = 'history';
 563
 564                         $links['history'] = $this->linkRenderer->makeKnownLink(
 565                                         $block0->getTitle(),
 566                                         new HtmlArmor( $this->message['enhancedrc-history'] ),
 567                                         [ 'class' => 'mw-changeslist-history' ],
 568                                         $params
 569                                 );
 570                 }
 571
 572                 # Allow others to alter, remove or add to these links
 573                 Hooks::run( 'EnhancedChangesList::getLogText',
 574                         [ $this, &$links, $block ] );
 575
 576                 if ( !$links ) {
 577                         return '';
 578                 }
 579
 580                 $logtext = implode( $this->message['pipe-separator'], $links );
 581                 $logtext = $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 582                 return ' ' . $logtext;
 583         }
 584
 585         /**
 586          * Enhanced RC ungrouped line.
 587          *
 588          * @param RecentChange|RCCacheEntry $rcObj
 589          * @return string A HTML formatted line (generated using $r)
 590          */
 591         protected function recentChangesBlockLine( $rcObj ) {
 592                 $data = [];
 593
 594                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 595
 596                 $type = $rcObj->mAttribs['rc_type'];
 597                 $logType = $rcObj->mAttribs['rc_log_type'];
 598                 $classes = $this->getHTMLClasses( $rcObj, $rcObj->watched );
 599                 $classes[] = 'mw-enhanced-rc';
 600
 601                 if ( $logType ) {
 602                         # Log entry
 603                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 604                 } else {
 605                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 606                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 607                 }
 608
 609                 # Flag and Timestamp
 610                 $data['recentChangesFlags'] = [
 611                         'newpage' => $type == RC_NEW,
 612                         'minor' => $rcObj->mAttribs['rc_minor'],
 613                         'unpatrolled' => $rcObj->unpatrolled,
 614                         'bot' => $rcObj->mAttribs['rc_bot'],
 615                 ];
 616                 // timestamp is not really a link here, but is called timestampLink
 617                 // for consistency with EnhancedChangesListModifyLineData
 618                 $data['timestampLink'] = $rcObj->timestamp;
 619
 620                 # Article or log link
 621                 if ( $logType ) {
 622                         $logPage = new LogPage( $logType );
 623                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 624                         $logName = $logPage->getName()->text();
 625                         $data['logLink'] = $this->msg( 'parentheses' )
 626                                 ->rawParams(
 627                                         $this->linkRenderer->makeKnownLink( $logTitle, $logName )
 628                                 )->escaped();
 629                 } else {
 630                         $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 631                 }
 632
 633                 # Diff and hist links
 634                 if ( $type != RC_LOG && $type != RC_CATEGORIZE ) {
 635                         $query['action'] = 'history';
 636                         $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 637                 }
 638                 $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator">. .</span> ';
 639
 640                 # Character diff
 641                 if ( $this->getConfig()->get( 'RCShowChangedSize' ) ) {
 642                         $cd = $this->formatCharacterDifference( $rcObj );
 643                         if ( $cd !== '' ) {
 644                                 $data['characterDiff'] = $cd;
 645                                 $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator">. .</span> ';
 646                         }
 647                 }
 648
 649                 if ( $type == RC_LOG ) {
 650                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 651                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 652                         $data['comment'] = $this->insertComment( $rcObj );
 653                 } else {
 654                         $data['userLink'] = $rcObj->userlink;
 655                         $data['userTalkLink'] = $rcObj->usertalklink;
 656                         $data['comment'] = $this->insertComment( $rcObj );
 657                         if ( $type == RC_CATEGORIZE ) {
 658                                 $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 659                         }
 660                         $data['rollback'] = $this->getRollback( $rcObj );
 661                 }
 662
 663                 # Tags
 664                 $data['tags'] = $this->getTags( $rcObj, $classes );
 665
 666                 # Show how many people are watching this if enabled
 667                 $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 668
 669                 // give the hook a chance to modify the data
 670                 $success = Hooks::run( 'EnhancedChangesListModifyBlockLineData',
 671                         [ $this, &$data, $rcObj ] );
 672                 if ( !$success ) {
 673                         // skip entry if hook aborted it
 674                         return '';
 675                 }
 676
 677                 $line = Html::openElement( 'table', [ 'class' => $classes ] ) .
 678                         Html::openElement( 'tr' );
 679                 $line .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 680
 681                 if ( isset( $data['recentChangesFlags'] ) ) {
 682                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 683                         unset( $data['recentChangesFlags'] );
 684                 }
 685
 686                 if ( isset( $data['timestampLink'] ) ) {
 687                         $line .= '&#160;' . $data['timestampLink'];
 688                         unset( $data['timestampLink'] );
 689                 }
 690                 $line .= '&#160;</td><td>';
 691
 692                 // everything else: makes it easier for extensions to add or remove data
 693                 $line .= implode( '', $data );
 694
 695                 $line .= "</td></tr></table>\n";
 696
 697                 return $line;
 698         }
 699
 700         /**
 701          * Returns value to be used in 'historyLink' element of $data param in
 702          * EnhancedChangesListModifyBlockLineData hook.
 703          *
 704          * @since 1.27
 705          *
 706          * @param RCCacheEntry $rc
 707          * @param array $query array of key/value pairs to append as a query string
 708          * @return string HTML
 709          */
 710         public function getDiffHistLinks( RCCacheEntry $rc, array $query ) {
 711                 $pageTitle = $rc->getTitle();
 712                 if ( $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE ) {
 713                         // For categorizations we must swap the category title with the page title!
 714                         $pageTitle = Title::newFromID( $rc->getAttribute( 'rc_cur_id' ) );
 715                 }
 716
 717                 $retVal = ' ' . $this->msg( 'parentheses' )
 718                                 ->rawParams( $rc->difflink . $this->message['pipe-separator']
 719                                         . $this->linkRenderer->makeKnownLink(
 720                                                 $pageTitle,
 721                                                 new HtmlArmor( $this->message['hist'] ),
 722                                                 [ 'class' => 'mw-changeslist-history' ],
 723                                                 $query
 724                                         ) )->escaped();
 725                 return $retVal;
 726         }
 727
 728         /**
 729          * If enhanced RC is in use, this function takes the previously cached
 730          * RC lines, arranges them, and outputs the HTML
 731          *
 732          * @return string
 733          */
 734         protected function recentChangesBlock() {
 735                 if ( count( $this->rc_cache ) == 0 ) {
 736                         return '';
 737                 }
 738
 739                 $blockOut = '';
 740                 foreach ( $this->rc_cache as $block ) {
 741                         if ( count( $block ) < 2 ) {
 742                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 743                         } else {
 744                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 745                         }
 746                 }
 747
 748                 return '<div>' . $blockOut . '</div>';
 749         }
 750
 751         /**
 752          * Returns text for the end of RC
 753          * If enhanced RC is in use, returns pretty much all the text
 754          * @return string
 755          */
 756         public function endRecentChangesList() {
 757                 return $this->recentChangesBlock() . '</div>';
 758         }
 759 }