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