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