includes/changes/ChangesList.php

   1 <?php
   2 /**
   3  * Base class for all changes lists.
   4  *
   5  * The class is used for formatting recent changes, related changes and watchlist.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  */
  24 use MediaWiki\Linker\LinkRenderer;
  25 use MediaWiki\MediaWikiServices;
  26 use Wikimedia\Rdbms\ResultWrapper;
  27
  28 class ChangesList extends ContextSource {
  29         const CSS_CLASS_PREFIX = 'mw-changeslist-';
  30
  31         /**
  32          * @var Skin
  33          */
  34         public $skin;
  35
  36         protected $watchlist = false;
  37         protected $lastdate;
  38         protected $message;
  39         protected $rc_cache;
  40         protected $rcCacheIndex;
  41         protected $rclistOpen;
  42         protected $rcMoveIndex;
  43
  44         /** @var BagOStuff */
  45         protected $watchMsgCache;
  46
  47         /**
  48          * @var LinkRenderer
  49          */
  50         protected $linkRenderer;
  51
  52         /**
  53          * @var array
  54          */
  55         protected $filterGroups;
  56
  57         /**
  58          * Changeslist constructor
  59          *
  60          * @param Skin|IContextSource $obj
  61          * @param array $filterGroups Array of ChangesListFilterGroup objects (currently optional)
  62          */
  63         public function __construct( $obj, array $filterGroups = [] ) {
  64                 if ( $obj instanceof IContextSource ) {
  65                         $this->setContext( $obj );
  66                         $this->skin = $obj->getSkin();
  67                 } else {
  68                         $this->setContext( $obj->getContext() );
  69                         $this->skin = $obj;
  70                 }
  71                 $this->preCacheMessages();
  72                 $this->watchMsgCache = new HashBagOStuff( [ 'maxKeys' => 50 ] );
  73                 $this->linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
  74                 $this->filterGroups = $filterGroups;
  75         }
  76
  77         /**
  78          * Fetch an appropriate changes list class for the specified context
  79          * Some users might want to use an enhanced list format, for instance
  80          *
  81          * @param IContextSource $context
  82          * @param array $groups Array of ChangesListFilterGroup objects (currently optional)
  83          * @return ChangesList
  84          */
  85         public static function newFromContext( IContextSource $context, array $groups = [] ) {
  86                 $user = $context->getUser();
  87                 $sk = $context->getSkin();
  88                 $list = null;
  89                 if ( Hooks::run( 'FetchChangesList', [ $user, &$sk, &$list ] ) ) {
  90                         $new = $context->getRequest()->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
  91
  92                         return $new ?
  93                                 new EnhancedChangesList( $context, $groups ) :
  94                                 new OldChangesList( $context, $groups );
  95                 } else {
  96                         return $list;
  97                 }
  98         }
  99
 100         /**
 101          * Format a line
 102          *
 103          * @since 1.27
 104          *
 105          * @param RecentChange $rc Passed by reference
 106          * @param bool $watched (default false)
 107          * @param int $linenumber (default null)
 108          *
 109          * @return string|bool
 110          */
 111         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 112                 throw new RuntimeException( 'recentChangesLine should be implemented' );
 113         }
 114
 115         /**
 116          * Sets the list to use a "<li class='watchlist-(namespace)-(page)'>" tag
 117          * @param bool $value
 118          */
 119         public function setWatchlistDivs( $value = true ) {
 120                 $this->watchlist = $value;
 121         }
 122
 123         /**
 124          * @return bool True when setWatchlistDivs has been called
 125          * @since 1.23
 126          */
 127         public function isWatchlist() {
 128                 return (bool)$this->watchlist;
 129         }
 130
 131         /**
 132          * As we use the same small set of messages in various methods and that
 133          * they are called often, we call them once and save them in $this->message
 134          */
 135         private function preCacheMessages() {
 136                 if ( !isset( $this->message ) ) {
 137                         foreach ( [
 138                                 'cur', 'diff', 'hist', 'enhancedrc-history', 'last', 'blocklink', 'history',
 139                                 'semicolon-separator', 'pipe-separator' ] as $msg
 140                         ) {
 141                                 $this->message[$msg] = $this->msg( $msg )->escaped();
 142                         }
 143                 }
 144         }
 145
 146         /**
 147          * Returns the appropriate flags for new page, minor change and patrolling
 148          * @param array $flags Associative array of 'flag' => Bool
 149          * @param string $nothing To use for empty space
 150          * @return string
 151          */
 152         public function recentChangesFlags( $flags, $nothing = '&#160;' ) {
 153                 $f = '';
 154                 foreach ( array_keys( $this->getConfig()->get( 'RecentChangesFlags' ) ) as $flag ) {
 155                         $f .= isset( $flags[$flag] ) && $flags[$flag]
 156                                 ? self::flag( $flag, $this->getContext() )
 157                                 : $nothing;
 158                 }
 159
 160                 return $f;
 161         }
 162
 163         /**
 164          * Get an array of default HTML class attributes for the change.
 165          *
 166          * @param RecentChange|RCCacheEntry $rc
 167          * @param string|bool $watched Optionally timestamp for adding watched class
 168          *
 169          * @return array of classes
 170          */
 171         protected function getHTMLClasses( $rc, $watched ) {
 172                 $classes = [];
 173                 $logType = $rc->mAttribs['rc_log_type'];
 174
 175                 if ( $logType ) {
 176                         $classes[] = Sanitizer::escapeClass( self::CSS_CLASS_PREFIX . 'log-' . $logType );
 177                 } else {
 178                         $classes[] = Sanitizer::escapeClass( self::CSS_CLASS_PREFIX . 'ns' .
 179                                 $rc->mAttribs['rc_namespace'] . '-' . $rc->mAttribs['rc_title'] );
 180                 }
 181
 182                 // Indicate watched status on the line to allow for more
 183                 // comprehensive styling.
 184                 $classes[] = $watched && $rc->mAttribs['rc_timestamp'] >= $watched
 185                         ? self::CSS_CLASS_PREFIX . 'line-watched'
 186                         : self::CSS_CLASS_PREFIX . 'line-not-watched';
 187
 188                 $classes = array_merge( $classes, $this->getHTMLClassesForFilters( $rc ) );
 189
 190                 return $classes;
 191         }
 192
 193         /**
 194          * Get an array of CSS classes attributed to filters for this row
 195          *
 196          * @param RecentChange $rc
 197          * @return array Array of CSS classes
 198          */
 199         protected function getHTMLClassesForFilters( $rc ) {
 200                 $classes = [];
 201
 202                 if ( $this->filterGroups !== null ) {
 203                         foreach ( $this->filterGroups as $filterGroup ) {
 204                                 foreach ( $filterGroup->getFilters() as $filter ) {
 205                                         $filter->applyCssClassIfNeeded( $this, $rc, $classes );
 206                                 }
 207                         }
 208                 }
 209
 210                 return $classes;
 211         }
 212
 213         /**
 214          * Make an "<abbr>" element for a given change flag. The flag indicating a new page, minor edit,
 215          * bot edit, or unpatrolled edit. In English it typically contains "N", "m", "b", or "!".
 216          *
 217          * @param string $flag One key of $wgRecentChangesFlags
 218          * @param IContextSource $context
 219          * @return string HTML
 220          */
 221         public static function flag( $flag, IContextSource $context = null ) {
 222                 static $map = [ 'minoredit' => 'minor', 'botedit' => 'bot' ];
 223                 static $flagInfos = null;
 224
 225                 if ( is_null( $flagInfos ) ) {
 226                         global $wgRecentChangesFlags;
 227                         $flagInfos = [];
 228                         foreach ( $wgRecentChangesFlags as $key => $value ) {
 229                                 $flagInfos[$key]['letter'] = $value['letter'];
 230                                 $flagInfos[$key]['title'] = $value['title'];
 231                                 // Allow customized class name, fall back to flag name
 232                                 $flagInfos[$key]['class'] = isset( $value['class'] ) ? $value['class'] : $key;
 233                         }
 234                 }
 235
 236                 $context = $context ?: RequestContext::getMain();
 237
 238                 // Inconsistent naming, kepted for b/c
 239                 if ( isset( $map[$flag] ) ) {
 240                         $flag = $map[$flag];
 241                 }
 242
 243                 $info = $flagInfos[$flag];
 244                 return Html::element( 'abbr', [
 245                         'class' => $info['class'],
 246                         'title' => wfMessage( $info['title'] )->setContext( $context )->text(),
 247                 ], wfMessage( $info['letter'] )->setContext( $context )->text() );
 248         }
 249
 250         /**
 251          * Returns text for the start of the tabular part of RC
 252          * @return string
 253          */
 254         public function beginRecentChangesList() {
 255                 $this->rc_cache = [];
 256                 $this->rcMoveIndex = 0;
 257                 $this->rcCacheIndex = 0;
 258                 $this->lastdate = '';
 259                 $this->rclistOpen = false;
 260                 $this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
 261
 262                 return '<div class="mw-changeslist">';
 263         }
 264
 265         /**
 266          * @param ResultWrapper|array $rows
 267          */
 268         public function initChangesListRows( $rows ) {
 269                 Hooks::run( 'ChangesListInitRows', [ $this, $rows ] );
 270         }
 271
 272         /**
 273          * Show formatted char difference
 274          *
 275          * Needs the css module 'mediawiki.special.changeslist' to style output
 276          *
 277          * @param int $old Number of bytes
 278          * @param int $new Number of bytes
 279          * @param IContextSource $context
 280          * @return string
 281          */
 282         public static function showCharacterDifference( $old, $new, IContextSource $context = null ) {
 283                 if ( !$context ) {
 284                         $context = RequestContext::getMain();
 285                 }
 286
 287                 $new = (int)$new;
 288                 $old = (int)$old;
 289                 $szdiff = $new - $old;
 290
 291                 $lang = $context->getLanguage();
 292                 $config = $context->getConfig();
 293                 $code = $lang->getCode();
 294                 static $fastCharDiff = [];
 295                 if ( !isset( $fastCharDiff[$code] ) ) {
 296                         $fastCharDiff[$code] = $config->get( 'MiserMode' )
 297                                 || $context->msg( 'rc-change-size' )->plain() === '$1';
 298                 }
 299
 300                 $formattedSize = $lang->formatNum( $szdiff );
 301
 302                 if ( !$fastCharDiff[$code] ) {
 303                         $formattedSize = $context->msg( 'rc-change-size', $formattedSize )->text();
 304                 }
 305
 306                 if ( abs( $szdiff ) > abs( $config->get( 'RCChangedSizeThreshold' ) ) ) {
 307                         $tag = 'strong';
 308                 } else {
 309                         $tag = 'span';
 310                 }
 311
 312                 if ( $szdiff === 0 ) {
 313                         $formattedSizeClass = 'mw-plusminus-null';
 314                 } elseif ( $szdiff > 0 ) {
 315                         $formattedSize = '+' . $formattedSize;
 316                         $formattedSizeClass = 'mw-plusminus-pos';
 317                 } else {
 318                         $formattedSizeClass = 'mw-plusminus-neg';
 319                 }
 320
 321                 $formattedTotalSize = $context->msg( 'rc-change-size-new' )->numParams( $new )->text();
 322
 323                 return Html::element( $tag,
 324                         [ 'dir' => 'ltr', 'class' => $formattedSizeClass, 'title' => $formattedTotalSize ],
 325                         $context->msg( 'parentheses', $formattedSize )->plain() ) . $lang->getDirMark();
 326         }
 327
 328         /**
 329          * Format the character difference of one or several changes.
 330          *
 331          * @param RecentChange $old
 332          * @param RecentChange $new Last change to use, if not provided, $old will be used
 333          * @return string HTML fragment
 334          */
 335         public function formatCharacterDifference( RecentChange $old, RecentChange $new = null ) {
 336                 $oldlen = $old->mAttribs['rc_old_len'];
 337
 338                 if ( $new ) {
 339                         $newlen = $new->mAttribs['rc_new_len'];
 340                 } else {
 341                         $newlen = $old->mAttribs['rc_new_len'];
 342                 }
 343
 344                 if ( $oldlen === null || $newlen === null ) {
 345                         return '';
 346                 }
 347
 348                 return self::showCharacterDifference( $oldlen, $newlen, $this->getContext() );
 349         }
 350
 351         /**
 352          * Returns text for the end of RC
 353          * @return string
 354          */
 355         public function endRecentChangesList() {
 356                 $out = $this->rclistOpen ? "</ul>\n" : '';
 357                 $out .= '</div>';
 358
 359                 return $out;
 360         }
 361
 362         /**
 363          * @param string $s HTML to update
 364          * @param mixed $rc_timestamp
 365          */
 366         public function insertDateHeader( &$s, $rc_timestamp ) {
 367                 # Make date header if necessary
 368                 $date = $this->getLanguage()->userDate( $rc_timestamp, $this->getUser() );
 369                 if ( $date != $this->lastdate ) {
 370                         if ( $this->lastdate != '' ) {
 371                                 $s .= "</ul>\n";
 372                         }
 373                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 374                         $this->lastdate = $date;
 375                         $this->rclistOpen = true;
 376                 }
 377         }
 378
 379         /**
 380          * @param string $s HTML to update
 381          * @param Title $title
 382          * @param string $logtype
 383          */
 384         public function insertLog( &$s, $title, $logtype ) {
 385                 $page = new LogPage( $logtype );
 386                 $logname = $page->getName()->setContext( $this->getContext() )->text();
 387                 $s .= $this->msg( 'parentheses' )->rawParams(
 388                         $this->linkRenderer->makeKnownLink( $title, $logname )
 389                 )->escaped();
 390         }
 391
 392         /**
 393          * @param string $s HTML to update
 394          * @param RecentChange $rc
 395          * @param bool|null $unpatrolled Unused variable, since 1.27.
 396          */
 397         public function insertDiffHist( &$s, &$rc, $unpatrolled = null ) {
 398                 # Diff link
 399                 if (
 400                         $rc->mAttribs['rc_type'] == RC_NEW ||
 401                         $rc->mAttribs['rc_type'] == RC_LOG ||
 402                         $rc->mAttribs['rc_type'] == RC_CATEGORIZE
 403                 ) {
 404                         $diffLink = $this->message['diff'];
 405                 } elseif ( !self::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 406                         $diffLink = $this->message['diff'];
 407                 } else {
 408                         $query = [
 409                                 'curid' => $rc->mAttribs['rc_cur_id'],
 410                                 'diff' => $rc->mAttribs['rc_this_oldid'],
 411                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 412                         ];
 413
 414                         $diffLink = $this->linkRenderer->makeKnownLink(
 415                                 $rc->getTitle(),
 416                                 new HtmlArmor( $this->message['diff'] ),
 417                                 [ 'class' => 'mw-changeslist-diff' ],
 418                                 $query
 419                         );
 420                 }
 421                 if ( $rc->mAttribs['rc_type'] == RC_CATEGORIZE ) {
 422                         $diffhist = $diffLink . $this->message['pipe-separator'] . $this->message['hist'];
 423                 } else {
 424                         $diffhist = $diffLink . $this->message['pipe-separator'];
 425                         # History link
 426                         $diffhist .= $this->linkRenderer->makeKnownLink(
 427                                 $rc->getTitle(),
 428                                 new HtmlArmor( $this->message['hist'] ),
 429                                 [ 'class' => 'mw-changeslist-history' ],
 430                                 [
 431                                         'curid' => $rc->mAttribs['rc_cur_id'],
 432                                         'action' => 'history'
 433                                 ]
 434                         );
 435                 }
 436
 437                 // @todo FIXME: Hard coded ". .". Is there a message for this? Should there be?
 438                 $s .= $this->msg( 'parentheses' )->rawParams( $diffhist )->escaped() .
 439                         ' <span class="mw-changeslist-separator">. .</span> ';
 440         }
 441
 442         /**
 443          * @param string $s Article link will be appended to this string, in place.
 444          * @param RecentChange $rc
 445          * @param bool $unpatrolled
 446          * @param bool $watched
 447          * @deprecated since 1.27, use getArticleLink instead.
 448          */
 449         public function insertArticleLink( &$s, RecentChange $rc, $unpatrolled, $watched ) {
 450                 $s .= $this->getArticleLink( $rc, $unpatrolled, $watched );
 451         }
 452
 453         /**
 454          * @param RecentChange $rc
 455          * @param bool $unpatrolled
 456          * @param bool $watched
 457          * @return string HTML
 458          * @since 1.26
 459          */
 460         public function getArticleLink( &$rc, $unpatrolled, $watched ) {
 461                 $params = [];
 462                 if ( $rc->getTitle()->isRedirect() ) {
 463                         $params = [ 'redirect' => 'no' ];
 464                 }
 465
 466                 $articlelink = $this->linkRenderer->makeLink(
 467                         $rc->getTitle(),
 468                         null,
 469                         [ 'class' => 'mw-changeslist-title' ],
 470                         $params
 471                 );
 472                 if ( $this->isDeleted( $rc, Revision::DELETED_TEXT ) ) {
 473                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 474                 }
 475                 # To allow for boldening pages watched by this user
 476                 $articlelink = "<span class=\"mw-title\">{$articlelink}</span>";
 477                 # RTL/LTR marker
 478                 $articlelink .= $this->getLanguage()->getDirMark();
 479
 480                 # TODO: Deprecate the $s argument, it seems happily unused.
 481                 $s = '';
 482                 # Avoid PHP 7.1 warning from passing $this by reference
 483                 $changesList = $this;
 484                 Hooks::run( 'ChangesListInsertArticleLink',
 485                         [ &$changesList, &$articlelink, &$s, &$rc, $unpatrolled, $watched ] );
 486
 487                 return "{$s} {$articlelink}";
 488         }
 489
 490         /**
 491          * Get the timestamp from $rc formatted with current user's settings
 492          * and a separator
 493          *
 494          * @param RecentChange $rc
 495          * @return string HTML fragment
 496          */
 497         public function getTimestamp( $rc ) {
 498                 // @todo FIXME: Hard coded ". .". Is there a message for this? Should there be?
 499                 return $this->message['semicolon-separator'] . '<span class="mw-changeslist-date">' .
 500                         $this->getLanguage()->userTime(
 501                                 $rc->mAttribs['rc_timestamp'],
 502                                 $this->getUser()
 503                         ) . '</span> <span class="mw-changeslist-separator">. .</span> ';
 504         }
 505
 506         /**
 507          * Insert time timestamp string from $rc into $s
 508          *
 509          * @param string $s HTML to update
 510          * @param RecentChange $rc
 511          */
 512         public function insertTimestamp( &$s, $rc ) {
 513                 $s .= $this->getTimestamp( $rc );
 514         }
 515
 516         /**
 517          * Insert links to user page, user talk page and eventually a blocking link
 518          *
 519          * @param string &$s HTML to update
 520          * @param RecentChange &$rc
 521          */
 522         public function insertUserRelatedLinks( &$s, &$rc ) {
 523                 if ( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 524                         $s .= ' <span class="history-deleted">' .
 525                                 $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 526                 } else {
 527                         $s .= $this->getLanguage()->getDirMark() . Linker::userLink( $rc->mAttribs['rc_user'],
 528                                 $rc->mAttribs['rc_user_text'] );
 529                         $s .= Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 530                 }
 531         }
 532
 533         /**
 534          * Insert a formatted action
 535          *
 536          * @param RecentChange $rc
 537          * @return string
 538          */
 539         public function insertLogEntry( $rc ) {
 540                 $formatter = LogFormatter::newFromRow( $rc->mAttribs );
 541                 $formatter->setContext( $this->getContext() );
 542                 $formatter->setShowUserToolLinks( true );
 543                 $mark = $this->getLanguage()->getDirMark();
 544
 545                 return $formatter->getActionText() . " $mark" . $formatter->getComment();
 546         }
 547
 548         /**
 549          * Insert a formatted comment
 550          * @param RecentChange $rc
 551          * @return string
 552          */
 553         public function insertComment( $rc ) {
 554                 if ( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 555                         return ' <span class="history-deleted">' .
 556                                 $this->msg( 'rev-deleted-comment' )->escaped() . '</span>';
 557                 } else {
 558                         return Linker::commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 559                 }
 560         }
 561
 562         /**
 563          * Returns the string which indicates the number of watching users
 564          * @param int $count Number of user watching a page
 565          * @return string
 566          */
 567         protected function numberofWatchingusers( $count ) {
 568                 if ( $count <= 0 ) {
 569                         return '';
 570                 }
 571                 $cache = $this->watchMsgCache;
 572                 return $cache->getWithSetCallback( $count, $cache::TTL_INDEFINITE,
 573                         function () use ( $count ) {
 574                                 return $this->msg( 'number_of_watching_users_RCview' )
 575                                         ->numParams( $count )->escaped();
 576                         }
 577                 );
 578         }
 579
 580         /**
 581          * Determine if said field of a revision is hidden
 582          * @param RCCacheEntry|RecentChange $rc
 583          * @param int $field One of DELETED_* bitfield constants
 584          * @return bool
 585          */
 586         public static function isDeleted( $rc, $field ) {
 587                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 588         }
 589
 590         /**
 591          * Determine if the current user is allowed to view a particular
 592          * field of this revision, if it's marked as deleted.
 593          * @param RCCacheEntry|RecentChange $rc
 594          * @param int $field
 595          * @param User $user User object to check, or null to use $wgUser
 596          * @return bool
 597          */
 598         public static function userCan( $rc, $field, User $user = null ) {
 599                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 600                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 601                 } else {
 602                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 603                 }
 604         }
 605
 606         /**
 607          * @param string $link
 608          * @param bool $watched
 609          * @return string
 610          */
 611         protected function maybeWatchedLink( $link, $watched = false ) {
 612                 if ( $watched ) {
 613                         return '<strong class="mw-watched">' . $link . '</strong>';
 614                 } else {
 615                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 616                 }
 617         }
 618
 619         /** Inserts a rollback link
 620          *
 621          * @param string $s
 622          * @param RecentChange $rc
 623          */
 624         public function insertRollback( &$s, &$rc ) {
 625                 if ( $rc->mAttribs['rc_type'] == RC_EDIT
 626                         && $rc->mAttribs['rc_this_oldid']
 627                         && $rc->mAttribs['rc_cur_id']
 628                 ) {
 629                         $page = $rc->getTitle();
 630                         /** Check for rollback and edit permissions, disallow special pages, and only
 631                          * show a link on the top-most revision */
 632                         if ( $this->getUser()->isAllowed( 'rollback' )
 633                                 && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid']
 634                         ) {
 635                                 $rev = new Revision( [
 636                                         'title' => $page,
 637                                         'id' => $rc->mAttribs['rc_this_oldid'],
 638                                         'user' => $rc->mAttribs['rc_user'],
 639                                         'user_text' => $rc->mAttribs['rc_user_text'],
 640                                         'deleted' => $rc->mAttribs['rc_deleted']
 641                                 ] );
 642                                 $s .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
 643                         }
 644                 }
 645         }
 646
 647         /**
 648          * @param RecentChange $rc
 649          * @return string
 650          * @since 1.26
 651          */
 652         public function getRollback( RecentChange $rc ) {
 653                 $s = '';
 654                 $this->insertRollback( $s, $rc );
 655                 return $s;
 656         }
 657
 658         /**
 659          * @param string $s
 660          * @param RecentChange $rc
 661          * @param array $classes
 662          */
 663         public function insertTags( &$s, &$rc, &$classes ) {
 664                 if ( empty( $rc->mAttribs['ts_tags'] ) ) {
 665                         return;
 666                 }
 667
 668                 list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow(
 669                         $rc->mAttribs['ts_tags'],
 670                         'changeslist',
 671                         $this->getContext()
 672                 );
 673                 $classes = array_merge( $classes, $newClasses );
 674                 $s .= ' ' . $tagSummary;
 675         }
 676
 677         /**
 678          * @param RecentChange $rc
 679          * @param array $classes
 680          * @return string
 681          * @since 1.26
 682          */
 683         public function getTags( RecentChange $rc, array &$classes ) {
 684                 $s = '';
 685                 $this->insertTags( $s, $rc, $classes );
 686                 return $s;
 687         }
 688
 689         public function insertExtra( &$s, &$rc, &$classes ) {
 690                 // Empty, used for subclasses to add anything special.
 691         }
 692
 693         protected function showAsUnpatrolled( RecentChange $rc ) {
 694                 return self::isUnpatrolled( $rc, $this->getUser() );
 695         }
 696
 697         /**
 698          * @param object|RecentChange $rc Database row from recentchanges or a RecentChange object
 699          * @param User $user
 700          * @return bool
 701          */
 702         public static function isUnpatrolled( $rc, User $user ) {
 703                 if ( $rc instanceof RecentChange ) {
 704                         $isPatrolled = $rc->mAttribs['rc_patrolled'];
 705                         $rcType = $rc->mAttribs['rc_type'];
 706                         $rcLogType = $rc->mAttribs['rc_log_type'];
 707                 } else {
 708                         $isPatrolled = $rc->rc_patrolled;
 709                         $rcType = $rc->rc_type;
 710                         $rcLogType = $rc->rc_log_type;
 711                 }
 712
 713                 if ( !$isPatrolled ) {
 714                         if ( $user->useRCPatrol() ) {
 715                                 return true;
 716                         }
 717                         if ( $user->useNPPatrol() && $rcType == RC_NEW ) {
 718                                 return true;
 719                         }
 720                         if ( $user->useFilePatrol() && $rcLogType == 'upload' ) {
 721                                 return true;
 722                         }
 723                 }
 724
 725                 return false;
 726         }
 727
 728         /**
 729          * Determines whether a revision is linked to this change; this may not be the case
 730          * when the categorization wasn't done by an edit but a conditional parser function
 731          *
 732          * @since 1.27
 733          *
 734          * @param RecentChange|RCCacheEntry $rcObj
 735          * @return bool
 736          */
 737         protected function isCategorizationWithoutRevision( $rcObj ) {
 738                 return intval( $rcObj->getAttribute( 'rc_type' ) ) === RC_CATEGORIZE
 739                         && intval( $rcObj->getAttribute( 'rc_this_oldid' ) ) === 0;
 740         }
 741
 742 }