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