includes/changes/EnhancedChangesList.php

   1 <?php
   2
   3 use MediaWiki\Storage\RevisionRecord;
   4
   5 /**
   6  * Generates a list of changes using an Enhanced system (uses javascript).
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  */
  25
  26 class EnhancedChangesList extends ChangesList {
  27
  28         /**
  29          * @var RCCacheEntryFactory
  30          */
  31         protected $cacheEntryFactory;
  32
  33         /**
  34          * @var array Array of array of RCCacheEntry
  35          */
  36         protected $rc_cache;
  37
  38         /**
  39          * @var TemplateParser
  40          */
  41         protected $templateParser;
  42
  43         /**
  44          * @param IContextSource|Skin $obj
  45          * @param array $filterGroups Array of ChangesListFilterGroup objects (currently optional)
  46          * @throws MWException
  47          */
  48         public function __construct( $obj, array $filterGroups = [] ) {
  49                 if ( $obj instanceof Skin ) {
  50                         // @todo: deprecate constructing with Skin
  51                         $context = $obj->getContext();
  52                 } else {
  53                         if ( !$obj instanceof IContextSource ) {
  54                                 throw new MWException( 'EnhancedChangesList must be constructed with a '
  55                                         . 'context source or skin.' );
  56                         }
  57
  58                         $context = $obj;
  59                 }
  60
  61                 parent::__construct( $context, $filterGroups );
  62
  63                 // message is set by the parent ChangesList class
  64                 $this->cacheEntryFactory = new RCCacheEntryFactory(
  65                         $context,
  66                         $this->message,
  67                         $this->linkRenderer
  68                 );
  69                 $this->templateParser = new TemplateParser();
  70         }
  71
  72         /**
  73          * Add the JavaScript file for enhanced changeslist
  74          * @return string
  75          */
  76         public function beginRecentChangesList() {
  77                 $this->rc_cache = [];
  78                 $this->rcMoveIndex = 0;
  79                 $this->rcCacheIndex = 0;
  80                 $this->lastdate = '';
  81                 $this->rclistOpen = false;
  82                 $this->getOutput()->addModuleStyles( [
  83                         'mediawiki.icon',
  84                         'mediawiki.interface.helpers.styles',
  85                         'mediawiki.special.changeslist',
  86                         'mediawiki.special.changeslist.enhanced',
  87                 ] );
  88                 $this->getOutput()->addModules( [
  89                         'jquery.makeCollapsible',
  90                 ] );
  91
  92                 return '<div class="mw-changeslist">';
  93         }
  94
  95         /**
  96          * Format a line for enhanced recentchange (aka with javascript and block of lines).
  97          *
  98          * @param RecentChange &$rc
  99          * @param bool $watched
 100          * @param int|null $linenumber (default null)
 101          *
 102          * @return string
 103          */
 104         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 105                 $date = $this->getLanguage()->userDate(
 106                         $rc->mAttribs['rc_timestamp'],
 107                         $this->getUser()
 108                 );
 109                 if ( $this->lastdate === '' ) {
 110                         $this->lastdate = $date;
 111                 }
 112
 113                 $ret = '';
 114
 115                 # If it's a new day, flush the cache and update $this->lastdate
 116                 if ( $date !== $this->lastdate ) {
 117                         # Process current cache (uses $this->lastdate to generate a heading)
 118                         $ret = $this->recentChangesBlock();
 119                         $this->rc_cache = [];
 120                         $this->lastdate = $date;
 121                 }
 122
 123                 $cacheEntry = $this->cacheEntryFactory->newFromRecentChange( $rc, $watched );
 124                 $this->addCacheEntry( $cacheEntry );
 125
 126                 return $ret;
 127         }
 128
 129         /**
 130          * Put accumulated information into the cache, for later display.
 131          * Page moves go on their own line.
 132          *
 133          * @param RCCacheEntry $cacheEntry
 134          */
 135         protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
 136                 $cacheGroupingKey = $this->makeCacheGroupingKey( $cacheEntry );
 137
 138                 if ( !isset( $this->rc_cache[$cacheGroupingKey] ) ) {
 139                         $this->rc_cache[$cacheGroupingKey] = [];
 140                 }
 141
 142                 array_push( $this->rc_cache[$cacheGroupingKey], $cacheEntry );
 143         }
 144
 145         /**
 146          * @todo use rc_source to group, if set; fallback to rc_type
 147          *
 148          * @param RCCacheEntry $cacheEntry
 149          *
 150          * @return string
 151          */
 152         protected function makeCacheGroupingKey( RCCacheEntry $cacheEntry ) {
 153                 $title = $cacheEntry->getTitle();
 154                 $cacheGroupingKey = $title->getPrefixedDBkey();
 155
 156                 $type = $cacheEntry->mAttribs['rc_type'];
 157
 158                 if ( $type == RC_LOG ) {
 159                         // Group by log type
 160                         $cacheGroupingKey = SpecialPage::getTitleFor(
 161                                 'Log',
 162                                 $cacheEntry->mAttribs['rc_log_type']
 163                         )->getPrefixedDBkey();
 164                 }
 165
 166                 return $cacheGroupingKey;
 167         }
 168
 169         /**
 170          * Enhanced RC group
 171          * @param RCCacheEntry[] $block
 172          * @return string
 173          * @throws DomainException
 174          */
 175         protected function recentChangesBlockGroup( $block ) {
 176                 $recentChangesFlags = $this->getConfig()->get( 'RecentChangesFlags' );
 177
 178                 # Add the namespace and title of the block as part of the class
 179                 $tableClasses = [ 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc', 'mw-changeslist-line' ];
 180                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 181                         # Log entry
 182                         $tableClasses[] = 'mw-changeslist-log';
 183                         $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 184                                 . $block[0]->mAttribs['rc_log_type'] );
 185                 } else {
 186                         $tableClasses[] = 'mw-changeslist-edit';
 187                         $tableClasses[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 188                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 189                 }
 190                 if ( $block[0]->watched ) {
 191                         $tableClasses[] = 'mw-changeslist-line-watched';
 192                 } else {
 193                         $tableClasses[] = 'mw-changeslist-line-not-watched';
 194                 }
 195
 196                 # Collate list of users
 197                 $userlinks = [];
 198                 # Other properties
 199                 $curId = 0;
 200                 # Some catalyst variables...
 201                 $namehidden = true;
 202                 $allLogs = true;
 203                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 204
 205                 # Default values for RC flags
 206                 $collectedRcFlags = [];
 207                 foreach ( $recentChangesFlags as $key => $value ) {
 208                         $flagGrouping = ( $recentChangesFlags[$key]['grouping'] ?? 'any' );
 209                         switch ( $flagGrouping ) {
 210                                 case 'all':
 211                                         $collectedRcFlags[$key] = true;
 212                                         break;
 213                                 case 'any':
 214                                         $collectedRcFlags[$key] = false;
 215                                         break;
 216                                 default:
 217                                         throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
 218                         }
 219                 }
 220                 foreach ( $block as $rcObj ) {
 221                         // If all log actions to this page were hidden, then don't
 222                         // give the name of the affected page for this block!
 223                         if ( !static::isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 224                                 $namehidden = false;
 225                         }
 226                         $u = $rcObj->userlink;
 227                         if ( !isset( $userlinks[$u] ) ) {
 228                                 $userlinks[$u] = 0;
 229                         }
 230                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 231                                 $allLogs = false;
 232                         }
 233                         # Get the latest entry with a page_id and oldid
 234                         # since logs may not have these.
 235                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 236                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 237                         }
 238
 239                         $userlinks[$u]++;
 240                 }
 241
 242                 # Sort the list and convert to text
 243                 krsort( $userlinks );
 244                 asort( $userlinks );
 245                 $users = [];
 246                 foreach ( $userlinks as $userlink => $count ) {
 247                         $text = $userlink;
 248                         $text .= $this->getLanguage()->getDirMark();
 249                         if ( $count > 1 ) {
 250                                 $formattedCount = $this->msg( 'ntimes' )->numParams( $count )->escaped();
 251                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 252                         }
 253                         array_push( $users, $text );
 254                 }
 255
 256                 # Article link
 257                 $articleLink = '';
 258                 $revDeletedMsg = false;
 259                 if ( $namehidden ) {
 260                         $revDeletedMsg = $this->msg( 'rev-deleted-event' )->escaped();
 261                 } elseif ( $allLogs ) {
 262                         $articleLink = $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 263                 } else {
 264                         $articleLink = $this->getArticleLink(
 265                                 $block[0], $block[0]->unpatrolled, $block[0]->watched );
 266                 }
 267
 268                 $queryParams['curid'] = $curId;
 269
 270                 # Sub-entries
 271                 $lines = [];
 272                 $filterClasses = [];
 273                 foreach ( $block as $i => $rcObj ) {
 274                         $line = $this->getLineData( $block, $rcObj, $queryParams );
 275                         if ( !$line ) {
 276                                 // completely ignore this RC entry if we don't want to render it
 277                                 unset( $block[$i] );
 278                                 continue;
 279                         }
 280
 281                         // Roll up flags
 282                         foreach ( $line['recentChangesFlagsRaw'] as $key => $value ) {
 283                                 $flagGrouping = ( $recentChangesFlags[$key]['grouping'] ?? 'any' );
 284                                 switch ( $flagGrouping ) {
 285                                         case 'all':
 286                                                 if ( !$value ) {
 287                                                         $collectedRcFlags[$key] = false;
 288                                                 }
 289                                                 break;
 290                                         case 'any':
 291                                                 if ( $value ) {
 292                                                         $collectedRcFlags[$key] = true;
 293                                                 }
 294                                                 break;
 295                                         default:
 296                                                 throw new DomainException( "Unknown grouping type \"{$flagGrouping}\"" );
 297                                 }
 298                         }
 299
 300                         // Roll up filter-based CSS classes
 301                         $filterClasses = array_merge( $filterClasses, $this->getHTMLClassesForFilters( $rcObj ) );
 302                         // Add classes for change tags separately, getHTMLClassesForFilters() doesn't add them
 303                         $this->getTags( $rcObj, $filterClasses );
 304                         $filterClasses = array_unique( $filterClasses );
 305
 306                         $lines[] = $line;
 307                 }
 308
 309                 // Further down are some assumptions that $block is a 0-indexed array
 310                 // with (count-1) as last key. Let's make sure it is.
 311                 $block = array_values( $block );
 312                 $filterClasses = array_values( $filterClasses );
 313
 314                 if ( empty( $block ) || !$lines ) {
 315                         // if we can't show anything, don't display this block altogether
 316                         return '';
 317                 }
 318
 319                 $logText = $this->getLogText( $block, $queryParams, $allLogs,
 320                         $collectedRcFlags['newpage'], $namehidden
 321                 );
 322
 323                 # Character difference (does not apply if only log items)
 324                 $charDifference = false;
 325                 if ( $RCShowChangedSize && !$allLogs ) {
 326                         $last = 0;
 327                         $first = count( $block ) - 1;
 328                         # Some events (like logs and category changes) have an "empty" size, so we need to skip those...
 329                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 330                                 $last++;
 331                         }
 332                         while ( $last < $first && $block[$first]->mAttribs['rc_old_len'] === null ) {
 333                                 $first--;
 334                         }
 335                         # Get net change
 336                         $charDifference = $this->formatCharacterDifference( $block[$first], $block[$last] ) ?: false;
 337                 }
 338
 339                 $numberofWatchingusers = $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
 340                 $usersList = $this->msg( 'brackets' )->rawParams(
 341                         implode( $this->message['semicolon-separator'], $users )
 342                 )->escaped();
 343
 344                 $prefix = '';
 345                 if ( is_callable( $this->changeLinePrefixer ) ) {
 346                         $prefix = call_user_func( $this->changeLinePrefixer, $block[0], $this, true );
 347                 }
 348
 349                 $templateParams = [
 350                         'articleLink' => $articleLink,
 351                         'charDifference' => $charDifference,
 352                         'collectedRcFlags' => $this->recentChangesFlags( $collectedRcFlags ),
 353                         'filterClasses' => $filterClasses,
 354                         'languageDirMark' => $this->getLanguage()->getDirMark(),
 355                         'lines' => $lines,
 356                         'logText' => $logText,
 357                         'numberofWatchingusers' => $numberofWatchingusers,
 358                         'prefix' => $prefix,
 359                         'rev-deleted-event' => $revDeletedMsg,
 360                         'tableClasses' => $tableClasses,
 361                         'timestamp' => $block[0]->timestamp,
 362                         'fullTimestamp' => $block[0]->getAttribute( 'rc_timestamp' ),
 363                         'users' => $usersList,
 364                 ];
 365
 366                 $this->rcCacheIndex++;
 367
 368                 return $this->templateParser->processTemplate(
 369                         'EnhancedChangesListGroup',
 370                         $templateParams
 371                 );
 372         }
 373
 374         /**
 375          * @param RCCacheEntry[] $block
 376          * @param RCCacheEntry $rcObj
 377          * @param array $queryParams
 378          * @return array
 379          * @throws Exception
 380          * @throws FatalError
 381          * @throws MWException
 382          */
 383         protected function getLineData( array $block, RCCacheEntry $rcObj, array $queryParams = [] ) {
 384                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 385
 386                 $type = $rcObj->mAttribs['rc_type'];
 387                 $data = [];
 388                 $lineParams = [ 'targetTitle' => $rcObj->getTitle() ];
 389
 390                 $classes = [ 'mw-enhanced-rc' ];
 391                 if ( $rcObj->watched ) {
 392                         $classes[] = 'mw-enhanced-watched';
 393                 }
 394                 $classes = array_merge( $classes, $this->getHTMLClasses( $rcObj, $rcObj->watched ) );
 395
 396                 $separator = ' <span class="mw-changeslist-separator"></span> ';
 397
 398                 $data['recentChangesFlags'] = [
 399                         'newpage' => $type == RC_NEW,
 400                         'minor' => $rcObj->mAttribs['rc_minor'],
 401                         'unpatrolled' => $rcObj->unpatrolled,
 402                         'bot' => $rcObj->mAttribs['rc_bot'],
 403                 ];
 404
 405                 $params = $queryParams;
 406
 407                 if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 408                         $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 409                 }
 410
 411                 # Log timestamp
 412                 if ( $type == RC_LOG ) {
 413                         $link = htmlspecialchars( $rcObj->timestamp );
 414                         # Revision link
 415                 } elseif ( !ChangesList::userCan( $rcObj, RevisionRecord::DELETED_TEXT, $this->getUser() ) ) {
 416                         $link = Html::element( 'span', [ 'class' => 'history-deleted' ], $rcObj->timestamp );
 417                 } else {
 418                         $link = $this->linkRenderer->makeKnownLink(
 419                                 $rcObj->getTitle(),
 420                                 $rcObj->timestamp,
 421                                 [],
 422                                 $params
 423                         );
 424                         if ( static::isDeleted( $rcObj, RevisionRecord::DELETED_TEXT ) ) {
 425                                 $link = '<span class="history-deleted">' . $link . '</span> ';
 426                         }
 427                 }
 428                 $data['timestampLink'] = $link;
 429
 430                 $currentAndLastLinks = '';
 431                 if ( !$type == RC_LOG || $type == RC_NEW ) {
 432                         $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
 433                                         $rcObj->curlink .
 434                                         $this->message['pipe-separator'] .
 435                                         $rcObj->lastlink
 436                                 )->escaped();
 437                 }
 438                 $data['currentAndLastLinks'] = $currentAndLastLinks;
 439                 $data['separatorAfterCurrentAndLastLinks'] = $separator;
 440
 441                 # Character diff
 442                 if ( $RCShowChangedSize ) {
 443                         $cd = $this->formatCharacterDifference( $rcObj );
 444                         if ( $cd !== '' ) {
 445                                 $data['characterDiff'] = $cd;
 446                                 $data['separatorAfterCharacterDiff'] = $separator;
 447                         }
 448                 }
 449
 450                 if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 451                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 452                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 453                         $data['comment'] = $this->insertComment( $rcObj );
 454                 } else {
 455                         # User links
 456                         $data['userLink'] = $rcObj->userlink;
 457                         $data['userTalkLink'] = $rcObj->usertalklink;
 458                         $data['comment'] = $this->insertComment( $rcObj );
 459                 }
 460
 461                 # Rollback
 462                 $data['rollback'] = $this->getRollback( $rcObj );
 463
 464                 # Tags
 465                 $data['tags'] = $this->getTags( $rcObj, $classes );
 466
 467                 $attribs = $this->getDataAttributes( $rcObj );
 468
 469                 // give the hook a chance to modify the data
 470                 $success = Hooks::run( 'EnhancedChangesListModifyLineData',
 471                         [ $this, &$data, $block, $rcObj, &$classes, &$attribs ] );
 472                 if ( !$success ) {
 473                         // skip entry if hook aborted it
 474                         return [];
 475                 }
 476                 $attribs = array_filter( $attribs,
 477                         [ Sanitizer::class, 'isReservedDataAttribute' ],
 478                         ARRAY_FILTER_USE_KEY
 479                 );
 480
 481                 $lineParams['recentChangesFlagsRaw'] = [];
 482                 if ( isset( $data['recentChangesFlags'] ) ) {
 483                         $lineParams['recentChangesFlags'] = $this->recentChangesFlags( $data['recentChangesFlags'] );
 484                         # FIXME: This is used by logic, don't return it in the template params.
 485                         $lineParams['recentChangesFlagsRaw'] = $data['recentChangesFlags'];
 486                         unset( $data['recentChangesFlags'] );
 487                 }
 488
 489                 if ( isset( $data['timestampLink'] ) ) {
 490                         $lineParams['timestampLink'] = $data['timestampLink'];
 491                         unset( $data['timestampLink'] );
 492                 }
 493
 494                 $lineParams['classes'] = array_values( $classes );
 495                 $lineParams['attribs'] = Html::expandAttributes( $attribs );
 496
 497                 // everything else: makes it easier for extensions to add or remove data
 498                 $lineParams['data'] = array_values( $data );
 499
 500                 return $lineParams;
 501         }
 502
 503         /**
 504          * Generates amount of changes (linking to diff ) & link to history.
 505          *
 506          * @param RCCacheEntry[] $block
 507          * @param array $queryParams
 508          * @param bool $allLogs
 509          * @param bool $isnew
 510          * @param bool $namehidden
 511          * @return string
 512          */
 513         protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
 514                 if ( empty( $block ) ) {
 515                         return '';
 516                 }
 517
 518                 # Changes message
 519                 static $nchanges = [];
 520                 static $sinceLastVisitMsg = [];
 521
 522                 $n = count( $block );
 523                 if ( !isset( $nchanges[$n] ) ) {
 524                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 525                 }
 526
 527                 $sinceLast = 0;
 528                 $unvisitedOldid = null;
 529                 /** @var RCCacheEntry $rcObj */
 530                 foreach ( $block as $rcObj ) {
 531                         // Same logic as below inside main foreach
 532                         if ( $rcObj->watched ) {
 533                                 $sinceLast++;
 534                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 535                         }
 536                 }
 537                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 538                         $sinceLastVisitMsg[$sinceLast] =
 539                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 540                 }
 541
 542                 $currentRevision = 0;
 543                 foreach ( $block as $rcObj ) {
 544                         if ( !$currentRevision ) {
 545                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 546                         }
 547                 }
 548
 549                 # Total change link
 550                 $links = [];
 551                 /** @var RecentChange $block0 */
 552                 $block0 = $block[0];
 553                 $last = $block[count( $block ) - 1];
 554                 if ( !$allLogs ) {
 555                         if (
 556                                 $isnew ||
 557                                 $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE ||
 558                                 !ChangesList::userCan( $rcObj, RevisionRecord::DELETED_TEXT, $this->getUser() )
 559                         ) {
 560                                 $links['total-changes'] = Html::rawElement( 'span', [], $nchanges[$n] );
 561                         } else {
 562                                 $links['total-changes'] = Html::rawElement( 'span', [],
 563                                         $this->linkRenderer->makeKnownLink(
 564                                                 $block0->getTitle(),
 565                                                 new HtmlArmor( $nchanges[$n] ),
 566                                                 [ 'class' => 'mw-changeslist-groupdiff' ],
 567                                                 $queryParams + [
 568                                                         'diff' => $currentRevision,
 569                                                         'oldid' => $last->mAttribs['rc_last_oldid'],
 570                                                 ]
 571                                         )
 572                                 );
 573                         }
 574
 575                         if (
 576                                 $rcObj->mAttribs['rc_type'] != RC_CATEGORIZE &&
 577                                 $sinceLast > 0 &&
 578                                 $sinceLast < $n
 579                         ) {
 580                                 $links['total-changes-since-last'] = Html::rawElement( 'span', [],
 581                                         $this->linkRenderer->makeKnownLink(
 582                                                 $block0->getTitle(),
 583                                                 new HtmlArmor( $sinceLastVisitMsg[$sinceLast] ),
 584                                                 [ 'class' => 'mw-changeslist-groupdiff' ],
 585                                                 $queryParams + [
 586                                                         'diff' => $currentRevision,
 587                                                         'oldid' => $unvisitedOldid,
 588                                                 ]
 589                                         )
 590                                 );
 591                         }
 592                 }
 593
 594                 # History
 595                 if ( $allLogs || $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE ) {
 596                         // don't show history link for logs
 597                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 598                         $links['history'] = Html::rawElement( 'span', [], $this->message['enhancedrc-history'] );
 599                 } else {
 600                         $params = $queryParams;
 601                         $params['action'] = 'history';
 602
 603                         $links['history'] = Html::rawElement( 'span', [],
 604                                 $this->linkRenderer->makeKnownLink(
 605                                         $block0->getTitle(),
 606                                         new HtmlArmor( $this->message['enhancedrc-history'] ),
 607                                         [ 'class' => 'mw-changeslist-history' ],
 608                                         $params
 609                                 )
 610                         );
 611                 }
 612
 613                 # Allow others to alter, remove or add to these links
 614                 Hooks::run( 'EnhancedChangesList::getLogText',
 615                         [ $this, &$links, $block ] );
 616
 617                 if ( !$links ) {
 618                         return '';
 619                 }
 620
 621                 $logtext = Html::rawElement( 'span', [ 'class' => 'mw-changeslist-links' ],
 622                         implode( ' ', $links ) );
 623                 return ' ' . $logtext;
 624         }
 625
 626         /**
 627          * Enhanced RC ungrouped line.
 628          *
 629          * @param RecentChange|RCCacheEntry $rcObj
 630          * @return string A HTML formatted line (generated using $r)
 631          */
 632         protected function recentChangesBlockLine( $rcObj ) {
 633                 $data = [];
 634
 635                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 636
 637                 $type = $rcObj->mAttribs['rc_type'];
 638                 $logType = $rcObj->mAttribs['rc_log_type'];
 639                 $classes = $this->getHTMLClasses( $rcObj, $rcObj->watched );
 640                 $classes[] = 'mw-enhanced-rc';
 641
 642                 if ( $logType ) {
 643                         # Log entry
 644                         $classes[] = 'mw-changeslist-log';
 645                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 646                 } else {
 647                         $classes[] = 'mw-changeslist-edit';
 648                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 649                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 650                 }
 651
 652                 # Flag and Timestamp
 653                 $data['recentChangesFlags'] = [
 654                         'newpage' => $type == RC_NEW,
 655                         'minor' => $rcObj->mAttribs['rc_minor'],
 656                         'unpatrolled' => $rcObj->unpatrolled,
 657                         'bot' => $rcObj->mAttribs['rc_bot'],
 658                 ];
 659                 // timestamp is not really a link here, but is called timestampLink
 660                 // for consistency with EnhancedChangesListModifyLineData
 661                 $data['timestampLink'] = htmlspecialchars( $rcObj->timestamp );
 662
 663                 # Article or log link
 664                 if ( $logType ) {
 665                         $logPage = new LogPage( $logType );
 666                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 667                         $logName = $logPage->getName()->text();
 668                         $data['logLink'] = Html::rawElement( 'span', [ 'class' => 'mw-changeslist-links' ],
 669                                 $this->linkRenderer->makeKnownLink( $logTitle, $logName )
 670                         );
 671                 } else {
 672                         $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 673                 }
 674
 675                 # Diff and hist links
 676                 if ( $type != RC_LOG && $type != RC_CATEGORIZE ) {
 677                         $query['action'] = 'history';
 678                         $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query, false );
 679                 }
 680                 $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator"></span> ';
 681
 682                 # Character diff
 683                 if ( $this->getConfig()->get( 'RCShowChangedSize' ) ) {
 684                         $cd = $this->formatCharacterDifference( $rcObj );
 685                         if ( $cd !== '' ) {
 686                                 $data['characterDiff'] = $cd;
 687                                 $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator"></span> ';
 688                         }
 689                 }
 690
 691                 if ( $type == RC_LOG ) {
 692                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 693                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 694                         $data['comment'] = $this->insertComment( $rcObj );
 695                 } else {
 696                         $data['userLink'] = $rcObj->userlink;
 697                         $data['userTalkLink'] = $rcObj->usertalklink;
 698                         $data['comment'] = $this->insertComment( $rcObj );
 699                         if ( $type == RC_CATEGORIZE ) {
 700                                 $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query, false );
 701                         }
 702                         $data['rollback'] = $this->getRollback( $rcObj );
 703                 }
 704
 705                 # Tags
 706                 $data['tags'] = $this->getTags( $rcObj, $classes );
 707
 708                 # Show how many people are watching this if enabled
 709                 $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 710
 711                 $data['attribs'] = array_merge( $this->getDataAttributes( $rcObj ), [ 'class' => $classes ] );
 712
 713                 // give the hook a chance to modify the data
 714                 $success = Hooks::run( 'EnhancedChangesListModifyBlockLineData',
 715                         [ $this, &$data, $rcObj ] );
 716                 if ( !$success ) {
 717                         // skip entry if hook aborted it
 718                         return '';
 719                 }
 720                 $attribs = $data['attribs'];
 721                 unset( $data['attribs'] );
 722                 $attribs = array_filter( $attribs, function ( $key ) {
 723                         return $key === 'class' || Sanitizer::isReservedDataAttribute( $key );
 724                 }, ARRAY_FILTER_USE_KEY );
 725
 726                 $prefix = '';
 727                 if ( is_callable( $this->changeLinePrefixer ) ) {
 728                         $prefix = call_user_func( $this->changeLinePrefixer, $rcObj, $this, false );
 729                 }
 730
 731                 $line = Html::openElement( 'table', $attribs ) . Html::openElement( 'tr' );
 732                 // Highlight block
 733                 $line .= Html::rawElement( 'td', [],
 734                         $this->getHighlightsContainerDiv()
 735                 );
 736
 737                 $line .= Html::rawElement( 'td', [], '<span class="mw-enhancedchanges-arrow-space"></span>' );
 738                 $line .= Html::rawElement( 'td', [ 'class' => 'mw-changeslist-line-prefix' ], $prefix );
 739                 $line .= '<td class="mw-enhanced-rc" colspan="2">';
 740
 741                 if ( isset( $data['recentChangesFlags'] ) ) {
 742                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 743                         unset( $data['recentChangesFlags'] );
 744                 }
 745
 746                 if ( isset( $data['timestampLink'] ) ) {
 747                         $line .= "\u{00A0}" . $data['timestampLink'];
 748                         unset( $data['timestampLink'] );
 749                 }
 750                 $line .= "\u{00A0}</td>";
 751                 $line .= Html::openElement( 'td', [
 752                         'class' => 'mw-changeslist-line-inner',
 753                         // Used for reliable determination of the affiliated page
 754                         'data-target-page' => $rcObj->getTitle(),
 755                 ] );
 756
 757                 // everything else: makes it easier for extensions to add or remove data
 758                 foreach ( $data as $key => $dataItem ) {
 759                         $line .= Html::rawElement( 'span', [
 760                                 'class' => 'mw-changeslist-line-inner-' . $key,
 761                         ], $dataItem );
 762                 }
 763
 764                 $line .= "</td></tr></table>\n";
 765
 766                 return $line;
 767         }
 768
 769         /**
 770          * Returns value to be used in 'historyLink' element of $data param in
 771          * EnhancedChangesListModifyBlockLineData hook.
 772          *
 773          * @since 1.27
 774          *
 775          * @param RCCacheEntry $rc
 776          * @param array $query array of key/value pairs to append as a query string
 777          * @param bool $useParentheses (optional) Wrap comments in parentheses where needed
 778          * @return string HTML
 779          */
 780         public function getDiffHistLinks( RCCacheEntry $rc, array $query, $useParentheses = true ) {
 781                 $pageTitle = $rc->getTitle();
 782                 if ( $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE ) {
 783                         // For categorizations we must swap the category title with the page title!
 784                         $pageTitle = Title::newFromID( $rc->getAttribute( 'rc_cur_id' ) );
 785                         if ( !$pageTitle ) {
 786                                 // The page has been deleted, but the RC entry
 787                                 // deletion job has not run yet. Just skip.
 788                                 return '';
 789                         }
 790                 }
 791
 792                 $histLink = $this->linkRenderer->makeKnownLink(
 793                         $pageTitle,
 794                         new HtmlArmor( $this->message['hist'] ),
 795                         [ 'class' => 'mw-changeslist-history' ],
 796                         $query
 797                 );
 798                 if ( $useParentheses ) {
 799                         $retVal = $this->msg( 'parentheses' )
 800                         ->rawParams( $rc->difflink . $this->message['pipe-separator']
 801                                 . $histLink )->escaped();
 802                 } else {
 803                         $retVal = Html::rawElement( 'span', [ 'class' => 'mw-changeslist-links' ],
 804                                 Html::rawElement( 'span', [], $rc->difflink ) .
 805                                 Html::rawElement( 'span', [], $histLink )
 806                         );
 807                 }
 808                 return ' ' . $retVal;
 809         }
 810
 811         /**
 812          * If enhanced RC is in use, this function takes the previously cached
 813          * RC lines, arranges them, and outputs the HTML
 814          *
 815          * @return string
 816          */
 817         protected function recentChangesBlock() {
 818                 if ( count( $this->rc_cache ) == 0 ) {
 819                         return '';
 820                 }
 821
 822                 $blockOut = '';
 823                 foreach ( $this->rc_cache as $block ) {
 824                         if ( count( $block ) < 2 ) {
 825                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 826                         } else {
 827                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 828                         }
 829                 }
 830
 831                 if ( $blockOut === '' ) {
 832                         return '';
 833                 }
 834                 // $this->lastdate is kept up to date by recentChangesLine()
 835                 return Xml::element( 'h4', null, $this->lastdate ) . "\n<div>" . $blockOut . '</div>';
 836         }
 837
 838         /**
 839          * Returns text for the end of RC
 840          * If enhanced RC is in use, returns pretty much all the text
 841          * @return string
 842          */
 843         public function endRecentChangesList() {
 844                 return $this->recentChangesBlock() . '</div>';
 845         }
 846 }