includes/ChangesList.php

   1 <?php
   2 /**
   3  * Classes to show various lists of changes:
   4  * - watchlist
   5  * - related changes
   6  * - recent changes
   7  *
   8  * @file
   9  */
  10
  11 /**
  12  * @todo document
  13  */
  14 class RCCacheEntry extends RecentChange {
  15         var $secureName, $link;
  16         var $curlink , $difflink, $lastlink, $usertalklink, $versionlink;
  17         var $userlink, $timestamp, $watched;
  18
  19         static function newFromParent( $rc ) {
  20                 $rc2 = new RCCacheEntry;
  21                 $rc2->mAttribs = $rc->mAttribs;
  22                 $rc2->mExtra = $rc->mExtra;
  23                 return $rc2;
  24         }
  25 }
  26
  27 /**
  28  * Base class for all changes lists
  29  */
  30 class ChangesList {
  31         public $skin;
  32         protected $watchlist = false;
  33
  34         /**
  35         * Changeslist contructor
  36         * @param $skin Skin
  37         */
  38         public function __construct( $skin ) {
  39                 $this->skin = $skin;
  40                 $this->preCacheMessages();
  41         }
  42
  43         /**
  44          * Fetch an appropriate changes list class for the specified user
  45          * Some users might want to use an enhanced list format, for instance
  46          *
  47          * @param $user User to fetch the list class for
  48          * @return ChangesList derivative
  49          */
  50         public static function newFromUser( &$user ) {
  51                 global $wgRequest;
  52
  53                 $sk = $user->getSkin();
  54                 $list = null;
  55                 if( wfRunHooks( 'FetchChangesList', array( &$user, &$sk, &$list ) ) ) {
  56                         $new = $wgRequest->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
  57                         return $new ? new EnhancedChangesList( $sk ) : new OldChangesList( $sk );
  58                 } else {
  59                         return $list;
  60                 }
  61         }
  62
  63         /**
  64          * Sets the list to use a <li class="watchlist-(namespace)-(page)"> tag
  65          * @param $value Boolean
  66          */
  67         public function setWatchlistDivs( $value = true ) {
  68                 $this->watchlist = $value;
  69         }
  70
  71         /**
  72          * As we use the same small set of messages in various methods and that
  73          * they are called often, we call them once and save them in $this->message
  74          */
  75         private function preCacheMessages() {
  76                 if( !isset( $this->message ) ) {
  77                         foreach ( explode( ' ', 'cur diff hist last blocklink history ' .
  78                         'semicolon-separator pipe-separator' ) as $msg ) {
  79                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
  80                         }
  81                 }
  82         }
  83
  84
  85         /**
  86          * Returns the appropriate flags for new page, minor change and patrolling
  87          * @param $new Boolean
  88          * @param $minor Boolean
  89          * @param $patrolled Boolean
  90          * @param $nothing String to use for empty space
  91          * @param $bot Boolean
  92          * @return String
  93          */
  94         protected function recentChangesFlags( $new, $minor, $patrolled, $nothing = '&#160;', $bot = false ) {
  95                 $f = $new ? self::flag( 'newpage' ) : $nothing;
  96                 $f .= $minor ? self::flag( 'minor' ) : $nothing;
  97                 $f .= $bot ? self::flag( 'bot' ) : $nothing;
  98                 $f .= $patrolled ? self::flag( 'unpatrolled' ) : $nothing;
  99                 return $f;
 100         }
 101
 102         /**
 103          * Provide the <abbr> element appropriate to a given abbreviated flag,
 104          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 105          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 106          * "!" respectively, plus it will have an appropriate title and class.
 107          *
 108          * @param $key String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 109          * @return String: Raw HTML
 110          */
 111         public static function flag( $key ) {
 112                 static $messages = null;
 113                 if ( is_null( $messages ) ) {
 114                         foreach ( explode( ' ', 'minoreditletter boteditletter newpageletter ' .
 115                         'unpatrolledletter recentchanges-label-minor recentchanges-label-bot ' .
 116                         'recentchanges-label-newpage recentchanges-label-unpatrolled' ) as $msg ) {
 117                                 $messages[$msg] = wfMsgExt( $msg, 'escapenoentities' );
 118                         }
 119                 }
 120                 # Inconsistent naming, bleh
 121                 if ( $key == 'newpage' || $key == 'unpatrolled' ) {
 122                         $key2 = $key;
 123                 } else {
 124                         $key2 = $key . 'edit';
 125                 }
 126                 return "<abbr class=\"$key\" title=\""
 127                         . $messages["recentchanges-label-$key"] . "\">"
 128                         . $messages["${key2}letter"]
 129                         . '</abbr>';
 130         }
 131
 132         /**
 133          * Returns text for the start of the tabular part of RC
 134          * @return String
 135          */
 136         public function beginRecentChangesList() {
 137                 $this->rc_cache = array();
 138                 $this->rcMoveIndex = 0;
 139                 $this->rcCacheIndex = 0;
 140                 $this->lastdate = '';
 141                 $this->rclistOpen = false;
 142                 return '';
 143         }
 144
 145         /**
 146          * Show formatted char difference
 147          * @param $old Integer: bytes
 148          * @param $new Integer: bytes
 149          * @returns String
 150          */
 151         public static function showCharacterDifference( $old, $new ) {
 152                 global $wgRCChangedSizeThreshold, $wgLang, $wgMiserMode;
 153                 $szdiff = $new - $old;
 154
 155                 $code = $wgLang->getCode();
 156                 static $fastCharDiff = array();
 157                 if ( !isset($fastCharDiff[$code]) ) {
 158                         $fastCharDiff[$code] = $wgMiserMode || wfMsgNoTrans( 'rc-change-size' ) === '$1';
 159                 }
 160
 161                 $formatedSize = $wgLang->formatNum($szdiff);
 162
 163                 if ( !$fastCharDiff[$code] ) {
 164                         $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape' ), $formatedSize );
 165                 }
 166
 167                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 168                         $tag = 'strong';
 169                 } else {
 170                     $tag = 'span';
 171                 }
 172                 if( $szdiff === 0 ) {
 173                         return "<$tag class='mw-plusminus-null'>($formatedSize)</$tag>";
 174                 } elseif( $szdiff > 0 ) {
 175                         return "<$tag class='mw-plusminus-pos'>(+$formatedSize)</$tag>";
 176             } else {
 177                         return "<$tag class='mw-plusminus-neg'>($formatedSize)</$tag>";
 178                 }
 179         }
 180
 181         /**
 182          * Returns text for the end of RC
 183          * @return String
 184          */
 185         public function endRecentChangesList() {
 186                 if( $this->rclistOpen ) {
 187                         return "</ul>\n";
 188                 } else {
 189                         return '';
 190                 }
 191         }
 192
 193         public function insertMove( &$s, $rc ) {
 194                 # Diff
 195                 $s .= '(' . $this->message['diff'] . ') (';
 196                 # Hist
 197                 $s .= $this->skin->link(
 198                         $rc->getMovedToTitle(),
 199                         $this->message['hist'],
 200                         array(),
 201                         array( 'action' => 'history' ),
 202                         array( 'known', 'noclasses' )
 203                 ) . ') . . ';
 204                 # "[[x]] moved to [[y]]"
 205                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 206                 $s .= wfMsg(
 207                         $msg,
 208                         $this->skin->link(
 209                                 $rc->getTitle(),
 210                                 null,
 211                                 array(),
 212                                 array( 'redirect' => 'no' ),
 213                                 array( 'known', 'noclasses' )
 214                         ),
 215                         $this->skin->link(
 216                                 $rc->getMovedToTitle(),
 217                                 null,
 218                                 array(),
 219                                 array(),
 220                                 array( 'known', 'noclasses' )
 221                         )
 222                 );
 223         }
 224
 225         public function insertDateHeader( &$s, $rc_timestamp ) {
 226                 global $wgLang;
 227                 # Make date header if necessary
 228                 $date = $wgLang->date( $rc_timestamp, true, true );
 229                 if( $date != $this->lastdate ) {
 230                         if( $this->lastdate != '' ) {
 231                                 $s .= "</ul>\n";
 232                         }
 233                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 234                         $this->lastdate = $date;
 235                         $this->rclistOpen = true;
 236                 }
 237         }
 238
 239         public function insertLog( &$s, $title, $logtype ) {
 240                 $logname = LogPage::logName( $logtype );
 241                 $s .= '(' . $this->skin->link(
 242                         $title,
 243                         $logname,
 244                         array(),
 245                         array(),
 246                         array( 'known', 'noclasses' )
 247                 ) . ')';
 248         }
 249
 250         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 251                 # Diff link
 252                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 253                         $diffLink = $this->message['diff'];
 254                 } else if( !self::userCan($rc,Revision::DELETED_TEXT) ) {
 255                         $diffLink = $this->message['diff'];
 256                 } else {
 257                         $query = array(
 258                                 'curid' => $rc->mAttribs['rc_cur_id'],
 259                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 260                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 261                         );
 262
 263                         if( $unpatrolled ) {
 264                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 265                         };
 266
 267                         $diffLink = $this->skin->link(
 268                                 $rc->getTitle(),
 269                                 $this->message['diff'],
 270                                 array( 'tabindex' => $rc->counter ),
 271                                 $query,
 272                                 array( 'known', 'noclasses' )
 273                         );
 274                 }
 275                 $s .= '(' . $diffLink . $this->message['pipe-separator'];
 276                 # History link
 277                 $s .= $this->skin->link(
 278                         $rc->getTitle(),
 279                         $this->message['hist'],
 280                         array(),
 281                         array(
 282                                 'curid' => $rc->mAttribs['rc_cur_id'],
 283                                 'action' => 'history'
 284                         ),
 285                         array( 'known', 'noclasses' )
 286                 );
 287                 $s .= ') . . ';
 288         }
 289
 290         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 291                 global $wgContLang;
 292                 # If it's a new article, there is no diff link, but if it hasn't been
 293                 # patrolled yet, we need to give users a way to do so
 294                 $params = array();
 295
 296                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 297                         $params['rcid'] = $rc->mAttribs['rc_id'];
 298                 }
 299
 300                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 301                         $articlelink = $this->skin->link(
 302                                 $rc->getTitle(),
 303                                 null,
 304                                 array(),
 305                                 $params,
 306                                 array( 'known', 'noclasses' )
 307                         );
 308                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 309                 } else {
 310                         $articlelink = ' '. $this->skin->link(
 311                                 $rc->getTitle(),
 312                                 null,
 313                                 array(),
 314                                 $params,
 315                                 array( 'known', 'noclasses' )
 316                         );
 317                 }
 318                 # Bolden pages watched by this user
 319                 if( $watched ) {
 320                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 321                 }
 322                 # RTL/LTR marker
 323                 $articlelink .= $wgContLang->getDirMark();
 324
 325                 wfRunHooks( 'ChangesListInsertArticleLink',
 326                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 327
 328                 $s .= " $articlelink";
 329         }
 330
 331         public function insertTimestamp( &$s, $rc ) {
 332                 global $wgLang;
 333                 $s .= $this->message['semicolon-separator'] .
 334                         $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 335         }
 336
 337         /** Insert links to user page, user talk page and eventually a blocking link */
 338         public function insertUserRelatedLinks( &$s, &$rc ) {
 339                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 340                    $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 341                 } else {
 342                   $s .= $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 343                   $s .= $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 344                 }
 345         }
 346
 347         /** insert a formatted action */
 348         public function insertAction( &$s, &$rc ) {
 349                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 350                         if( $this->isDeleted( $rc, LogPage::DELETED_ACTION ) ) {
 351                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 352                         } else {
 353                                 $s .= ' '.LogPage::actionText( $rc->mAttribs['rc_log_type'], $rc->mAttribs['rc_log_action'],
 354                                         $rc->getTitle(), $this->skin, LogPage::extractParams( $rc->mAttribs['rc_params'] ), true, true );
 355                         }
 356                 }
 357         }
 358
 359         /** insert a formatted comment */
 360         public function insertComment( &$s, &$rc ) {
 361                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 362                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 363                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 364                         } else {
 365                                 $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 366                         }
 367                 }
 368         }
 369
 370         /**
 371          * Check whether to enable recent changes patrol features
 372          * @return Boolean
 373          */
 374         public static function usePatrol() {
 375                 global $wgUser;
 376                 return $wgUser->useRCPatrol();
 377         }
 378
 379         /**
 380          * Returns the string which indicates the number of watching users
 381          */
 382         protected function numberofWatchingusers( $count ) {
 383                 global $wgLang;
 384                 static $cache = array();
 385                 if( $count > 0 ) {
 386                         if( !isset( $cache[$count] ) ) {
 387                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 388                                         array('parsemag', 'escape' ), $wgLang->formatNum( $count ) );
 389                         }
 390                         return $cache[$count];
 391                 } else {
 392                         return '';
 393                 }
 394         }
 395
 396         /**
 397          * Determine if said field of a revision is hidden
 398          * @param $rc RCCacheEntry
 399          * @param $field Integer: one of DELETED_* bitfield constants
 400          * @return Boolean
 401          */
 402         public static function isDeleted( $rc, $field ) {
 403                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 404         }
 405
 406         /**
 407          * Determine if the current user is allowed to view a particular
 408          * field of this revision, if it's marked as deleted.
 409          * @param $rc RCCacheEntry
 410          * @param $field Integer
 411          * @return Boolean
 412          */
 413         public static function userCan( $rc, $field ) {
 414                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 415                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 416                 } else {
 417                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 418                 }
 419         }
 420
 421         protected function maybeWatchedLink( $link, $watched = false ) {
 422                 if( $watched ) {
 423                         return '<strong class="mw-watched">' . $link . '</strong>';
 424                 } else {
 425                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 426                 }
 427         }
 428
 429         /** Inserts a rollback link */
 430         public function insertRollback( &$s, &$rc ) {
 431                 global $wgUser;
 432                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 433                         $page = $rc->getTitle();
 434                         /** Check for rollback and edit permissions, disallow special pages, and only
 435                           * show a link on the top-most revision */
 436                         if ($wgUser->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 437                         {
 438                                 $rev = new Revision( array(
 439                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 440                                         'user'      => $rc->mAttribs['rc_user'],
 441                                         'user_text' => $rc->mAttribs['rc_user_text'],
 442                                         'deleted'   => $rc->mAttribs['rc_deleted']
 443                                 ) );
 444                                 $rev->setTitle( $page );
 445                                 $s .= ' '.$this->skin->generateRollback( $rev );
 446                         }
 447                 }
 448         }
 449
 450         public function insertTags( &$s, &$rc, &$classes ) {
 451                 if ( empty($rc->mAttribs['ts_tags']) )
 452                         return;
 453
 454                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 455                 $classes = array_merge( $classes, $newClasses );
 456                 $s .= ' ' . $tagSummary;
 457         }
 458
 459         public function insertExtra( &$s, &$rc, &$classes ) {
 460                 ## Empty, used for subclassers to add anything special.
 461         }
 462 }
 463
 464
 465 /**
 466  * Generate a list of changes using the good old system (no javascript)
 467  */
 468 class OldChangesList extends ChangesList {
 469         /**
 470          * Format a line using the old system (aka without any javascript).
 471          */
 472         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 473                 global $wgLang, $wgRCShowChangedSize, $wgUser;
 474                 wfProfileIn( __METHOD__ );
 475                 # Should patrol-related stuff be shown?
 476                 $unpatrolled = $wgUser->useRCPatrol() && !$rc->mAttribs['rc_patrolled'];
 477
 478                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 479                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 480
 481                 $s = '';
 482                 $classes = array();
 483                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 484                 if( $linenumber ) {
 485                         if( $linenumber & 1 ) {
 486                                 $classes[] = 'mw-line-odd';
 487                         }
 488                         else {
 489                                 $classes[] = 'mw-line-even';
 490                         }
 491                 }
 492
 493                 // Moved pages
 494                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 495                         $this->insertMove( $s, $rc );
 496                 // Log entries
 497                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 498                         $logtitle = Title::newFromText( 'Log/'.$rc->mAttribs['rc_log_type'], NS_SPECIAL );
 499                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 500                 // Log entries (old format) or log targets, and special pages
 501                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 502                         list( $name, $subpage ) = SpecialPage::resolveAliasWithSubpage( $rc->mAttribs['rc_title'] );
 503                         if( $name == 'Log' ) {
 504                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 505                         }
 506                 // Regular entries
 507                 } else {
 508                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 509                         # M, N, b and ! (minor, new, bot and unpatrolled)
 510                         $s .= $this->recentChangesFlags( $rc->mAttribs['rc_new'], $rc->mAttribs['rc_minor'],
 511                                 $unpatrolled, '', $rc->mAttribs['rc_bot'] );
 512                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 513                 }
 514                 # Edit/log timestamp
 515                 $this->insertTimestamp( $s, $rc );
 516                 # Bytes added or removed
 517                 if( $wgRCShowChangedSize ) {
 518                         $cd = $rc->getCharacterDifference();
 519                         if( $cd != '' ) {
 520                                 $s .= "$cd  . . ";
 521                         }
 522                 }
 523                 # User tool links
 524                 $this->insertUserRelatedLinks( $s, $rc );
 525                 # Log action text (if any)
 526                 $this->insertAction( $s, $rc );
 527                 # Edit or log comment
 528                 $this->insertComment( $s, $rc );
 529                 # Tags
 530                 $this->insertTags( $s, $rc, $classes );
 531                 # Rollback
 532                 $this->insertRollback( $s, $rc );
 533                 # For subclasses
 534                 $this->insertExtra( $s, $rc, $classes );
 535
 536                 # How many users watch this page
 537                 if( $rc->numberofWatchingusers > 0 ) {
 538                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 539                                 array( 'parsemag', 'escape' ), $wgLang->formatNum( $rc->numberofWatchingusers ) );
 540                 }
 541
 542                 if( $this->watchlist ) {
 543                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 544                 }
 545
 546                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 547
 548                 wfProfileOut( __METHOD__ );
 549                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 550         }
 551 }
 552
 553
 554 /**
 555  * Generate a list of changes using an Enhanced system (uses javascript).
 556  */
 557 class EnhancedChangesList extends ChangesList {
 558         /**
 559          * Add the JavaScript file for enhanced changeslist
 560          * @return String
 561          */
 562         public function beginRecentChangesList() {
 563                 global $wgOut;
 564                 $this->rc_cache = array();
 565                 $this->rcMoveIndex = 0;
 566                 $this->rcCacheIndex = 0;
 567                 $this->lastdate = '';
 568                 $this->rclistOpen = false;
 569                 $wgOut->addModules( 'mediawiki.legacy.enhancedchanges' );
 570                 return '';
 571         }
 572         /**
 573          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 574          */
 575         public function recentChangesLine( &$baseRC, $watched = false ) {
 576                 global $wgLang, $wgUser;
 577
 578                 wfProfileIn( __METHOD__ );
 579
 580                 # Create a specialised object
 581                 $rc = RCCacheEntry::newFromParent( $baseRC );
 582
 583                 # Extract fields from DB into the function scope (rc_xxxx variables)
 584                 // FIXME: Would be good to replace this extract() call with something
 585                 // that explicitly initializes variables.
 586                 extract( $rc->mAttribs );
 587                 $curIdEq = array( 'curid' => $rc_cur_id );
 588
 589                 # If it's a new day, add the headline and flush the cache
 590                 $date = $wgLang->date( $rc_timestamp, true );
 591                 $ret = '';
 592                 if( $date != $this->lastdate ) {
 593                         # Process current cache
 594                         $ret = $this->recentChangesBlock();
 595                         $this->rc_cache = array();
 596                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 597                         $this->lastdate = $date;
 598                 }
 599
 600                 # Should patrol-related stuff be shown?
 601                 if( $wgUser->useRCPatrol() ) {
 602                         $rc->unpatrolled = !$rc_patrolled;
 603                 } else {
 604                         $rc->unpatrolled = false;
 605                 }
 606
 607                 $showdifflinks = true;
 608                 # Make article link
 609                 // Page moves
 610                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 611                         $msg = ( $rc_type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 612                         $clink = wfMsg( $msg, $this->skin->linkKnown( $rc->getTitle(), null,
 613                                 array(), array( 'redirect' => 'no' ) ),
 614                                 $this->skin->linkKnown( $rc->getMovedToTitle() ) );
 615                 // New unpatrolled pages
 616                 } else if( $rc->unpatrolled && $rc_type == RC_NEW ) {
 617                         $clink = $this->skin->linkKnown( $rc->getTitle(), null, array(),
 618                                 array( 'rcid' => $rc_id ) );
 619                 // Log entries
 620                 } else if( $rc_type == RC_LOG ) {
 621                         if( $rc_log_type ) {
 622                                 $logtitle = SpecialPage::getTitleFor( 'Log', $rc_log_type );
 623                                 $clink = '(' . $this->skin->linkKnown( $logtitle,
 624                                         LogPage::logName($rc_log_type) ) . ')';
 625                         } else {
 626                                 $clink = $this->skin->link( $rc->getTitle() );
 627                         }
 628                         $watched = false;
 629                 // Log entries (old format) and special pages
 630                 } elseif( $rc_namespace == NS_SPECIAL ) {
 631                         list( $specialName, $logtype ) = SpecialPage::resolveAliasWithSubpage( $rc_title );
 632                         if ( $specialName == 'Log' ) {
 633                                 # Log updates, etc
 634                                 $logname = LogPage::logName( $logtype );
 635                                 $clink = '(' . $this->skin->linkKnown( $rc->getTitle(), $logname ) . ')';
 636                         } else {
 637                                 wfDebug( "Unexpected special page in recentchanges\n" );
 638                                 $clink = '';
 639                         }
 640                 // Edits
 641                 } else {
 642                         $clink = $this->skin->linkKnown( $rc->getTitle() );
 643                 }
 644
 645                 # Don't show unusable diff links
 646                 if ( !ChangesList::userCan($rc,Revision::DELETED_TEXT) ) {
 647                         $showdifflinks = false;
 648                 }
 649
 650                 $time = $wgLang->time( $rc_timestamp, true, true );
 651                 $rc->watched = $watched;
 652                 $rc->link = $clink;
 653                 $rc->timestamp = $time;
 654                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 655
 656                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 657                 # called too many times (50% of CPU time on RecentChanges!).
 658                 if( $rc->unpatrolled ) {
 659                         $rcIdQuery = array( 'rcid' => $rc_id );
 660                 } else {
 661                         $rcIdQuery = array();
 662                 }
 663                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $rc_this_oldid );
 664                 $querydiff = $curIdEq + array( 'diff' => $rc_this_oldid, 'oldid' =>
 665                         $rc_last_oldid ) + $rcIdQuery;
 666
 667                 if( !$showdifflinks ) {
 668                         $curLink = $this->message['cur'];
 669                         $diffLink = $this->message['diff'];
 670                 } else if( in_array( $rc_type, array(RC_NEW,RC_LOG,RC_MOVE,RC_MOVE_OVER_REDIRECT) ) ) {
 671                         if ( $rc_type != RC_NEW ) {
 672                                 $curLink = $this->message['cur'];
 673                         } else {
 674                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 675                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 676                         }
 677                         $diffLink = $this->message['diff'];
 678                 } else {
 679                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querydiff ) );
 680                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 681                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 682                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 683                 }
 684
 685                 # Make "last" link
 686                 if( !$showdifflinks || !$rc_last_oldid ) {
 687                         $lastLink = $this->message['last'];
 688                 } else if( $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 689                         $lastLink = $this->message['last'];
 690                 } else {
 691                         $lastLink = $this->skin->linkKnown( $rc->getTitle(), $this->message['last'],
 692                                 array(), $curIdEq + array('diff' => $rc_this_oldid, 'oldid' => $rc_last_oldid) + $rcIdQuery );
 693                 }
 694
 695                 # Make user links
 696                 if( $this->isDeleted($rc,Revision::DELETED_USER) ) {
 697                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 698                 } else {
 699                         $rc->userlink = $this->skin->userLink( $rc_user, $rc_user_text );
 700                         $rc->usertalklink = $this->skin->userToolLinks( $rc_user, $rc_user_text );
 701                 }
 702
 703                 $rc->lastlink = $lastLink;
 704                 $rc->curlink  = $curLink;
 705                 $rc->difflink = $diffLink;
 706
 707                 # Put accumulated information into the cache, for later display
 708                 # Page moves go on their own line
 709                 $title = $rc->getTitle();
 710                 $secureName = $title->getPrefixedDBkey();
 711                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 712                         # Use an @ character to prevent collision with page names
 713                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 714                 } else {
 715                         # Logs are grouped by type
 716                         if( $rc_type == RC_LOG ){
 717                                 $secureName = SpecialPage::getTitleFor( 'Log', $rc_log_type )->getPrefixedDBkey();
 718                         }
 719                         if( !isset( $this->rc_cache[$secureName] ) ) {
 720                                 $this->rc_cache[$secureName] = array();
 721                         }
 722
 723                         array_push( $this->rc_cache[$secureName], $rc );
 724                 }
 725
 726                 wfProfileOut( __METHOD__ );
 727
 728                 return $ret;
 729         }
 730
 731         /**
 732          * Enhanced RC group
 733          */
 734         protected function recentChangesBlockGroup( $block ) {
 735                 global $wgLang, $wgContLang, $wgRCShowChangedSize;
 736
 737                 wfProfileIn( __METHOD__ );
 738
 739                 # Add the namespace and title of the block as part of the class
 740                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 741                         # Log entry
 742                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 743                 } else {
 744                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 745                 }
 746                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 747                         Html::openElement( 'tr' );
 748
 749                 # Collate list of users
 750                 $userlinks = array();
 751                 # Other properties
 752                 $unpatrolled = false;
 753                 $isnew = false;
 754                 $curId = $currentRevision = 0;
 755                 # Some catalyst variables...
 756                 $namehidden = true;
 757                 $allLogs = true;
 758                 foreach( $block as $rcObj ) {
 759                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 760                         if( $rcObj->mAttribs['rc_new'] ) {
 761                                 $isnew = true;
 762                         }
 763                         // If all log actions to this page were hidden, then don't
 764                         // give the name of the affected page for this block!
 765                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 766                                 $namehidden = false;
 767                         }
 768                         $u = $rcObj->userlink;
 769                         if( !isset( $userlinks[$u] ) ) {
 770                                 $userlinks[$u] = 0;
 771                         }
 772                         if( $rcObj->unpatrolled ) {
 773                                 $unpatrolled = true;
 774                         }
 775                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 776                                 $allLogs = false;
 777                         }
 778                         # Get the latest entry with a page_id and oldid
 779                         # since logs may not have these.
 780                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 781                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 782                         }
 783                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 784                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 785                         }
 786
 787                         $bot = $rcObj->mAttribs['rc_bot'];
 788                         $userlinks[$u]++;
 789                 }
 790
 791                 # Sort the list and convert to text
 792                 krsort( $userlinks );
 793                 asort( $userlinks );
 794                 $users = array();
 795                 foreach( $userlinks as $userlink => $count) {
 796                         $text = $userlink;
 797                         $text .= $wgContLang->getDirMark();
 798                         if( $count > 1 ) {
 799                                 $text .= ' (' . $wgLang->formatNum( $count ) . '×)';
 800                         }
 801                         array_push( $users, $text );
 802                 }
 803
 804                 $users = ' <span class="changedby">[' .
 805                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 806
 807                 # ID for JS visibility toggle
 808                 $jsid = $this->rcCacheIndex;
 809                 # onclick handler to toggle hidden/expanded
 810                 $toggleLink = "onclick='toggleVisibility($jsid); return false'";
 811                 # Title for <a> tags
 812                 $expandTitle = htmlspecialchars( wfMsg( 'rc-enhanced-expand' ) );
 813                 $closeTitle = htmlspecialchars( wfMsg( 'rc-enhanced-hide' ) );
 814
 815                 $tl = "<span id='mw-rc-openarrow-$jsid' class='mw-changeslist-expanded' style='visibility:hidden'><a href='#' $toggleLink title='$expandTitle'>" . $this->sideArrow() . "</a></span>";
 816                 $tl .= "<span id='mw-rc-closearrow-$jsid' class='mw-changeslist-hidden' style='display:none'><a href='#' $toggleLink title='$closeTitle'>" . $this->downArrow() . "</a></span>";
 817                 $r .= '<td class="mw-enhanced-rc">'.$tl.'&#160;';
 818
 819                 # Main line
 820                 $r .= $this->recentChangesFlags( $isnew, false, $unpatrolled, '&#160;', $bot );
 821
 822                 # Timestamp
 823                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td style="padding:0px;">';
 824
 825                 # Article link
 826                 if( $namehidden ) {
 827                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 828                 } else if( $allLogs ) {
 829                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 830                 } else {
 831                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 832                 }
 833
 834                 $r .= $wgContLang->getDirMark();
 835
 836                 $queryParams['curid'] = $curId;
 837                 # Changes message
 838                 $n = count($block);
 839                 static $nchanges = array();
 840                 if ( !isset( $nchanges[$n] ) ) {
 841                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) );
 842                 }
 843                 # Total change link
 844                 $r .= ' ';
 845                 if( !$allLogs ) {
 846                         $r .= '(';
 847                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT ) ) {
 848                                 $r .= $nchanges[$n];
 849                         } else if( $isnew ) {
 850                                 $r .= $nchanges[$n];
 851                         } else {
 852                                 $params = $queryParams;
 853                                 $params['diff'] = $currentRevision;
 854                                 $params['oldid'] = $oldid;
 855
 856                                 $r .= $this->skin->link(
 857                                         $block[0]->getTitle(),
 858                                         $nchanges[$n],
 859                                         array(),
 860                                         $params,
 861                                         array( 'known', 'noclasses' )
 862                                 );
 863                         }
 864                 }
 865
 866                 # History
 867                 if( $allLogs ) {
 868                         // don't show history link for logs
 869                 } else if( $namehidden || !$block[0]->getTitle()->exists() ) {
 870                         $r .= $this->message['pipe-separator'] . $this->message['hist'] . ')';
 871                 } else {
 872                         $params = $queryParams;
 873                         $params['action'] = 'history';
 874
 875                         $r .= $this->message['pipe-separator'] .
 876                                 $this->skin->link(
 877                                         $block[0]->getTitle(),
 878                                         $this->message['hist'],
 879                                         array(),
 880                                         $params,
 881                                         array( 'known', 'noclasses' )
 882                                 ) . ')';
 883                 }
 884                 $r .= ' . . ';
 885
 886                 # Character difference (does not apply if only log items)
 887                 if( $wgRCShowChangedSize && !$allLogs ) {
 888                         $last = 0;
 889                         $first = count($block) - 1;
 890                         # Some events (like logs) have an "empty" size, so we need to skip those...
 891                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 892                                 $last++;
 893                         }
 894                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 895                                 $first--;
 896                         }
 897                         # Get net change
 898                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 899                                 $block[$last]->mAttribs['rc_new_len'] );
 900
 901                         if( $chardiff == '' ) {
 902                                 $r .= ' ';
 903                         } else {
 904                                 $r .= ' ' . $chardiff. ' . . ';
 905                         }
 906                 }
 907
 908                 $r .= $users;
 909                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 910
 911                 $r .= "</td></tr></table>\n";
 912
 913                 # Sub-entries
 914                 $r .= '<div id="mw-rc-subentries-'.$jsid.'" class="mw-changeslist-hidden">';
 915                 $r .= '<table class="mw-enhanced-rc">';
 916                 foreach( $block as $rcObj ) {
 917                         # Extract fields from DB into the function scope (rc_xxxx variables)
 918                         // FIXME: Would be good to replace this extract() call with something
 919                         // that explicitly initializes variables.
 920                         # Classes to apply -- TODO implement
 921                         $classes = array();
 922                         extract( $rcObj->mAttribs );
 923
 924                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 925                         $r .= '<tr><td style="vertical-align:top;font-family:monospace; padding:0px;">';
 926                         $r .= $this->spacerIndent() . $this->spacerIndent();
 927                         $r .= $this->recentChangesFlags( $rc_new, $rc_minor, $rcObj->unpatrolled, '&#160;', $rc_bot );
 928                         $r .= '&#160;</td><td style="vertical-align:top; padding:0px;"><span style="font-family:monospace">';
 929
 930                         $params = $queryParams;
 931
 932                         if( $rc_this_oldid != 0 ) {
 933                                 $params['oldid'] = $rc_this_oldid;
 934                         }
 935
 936                         # Log timestamp
 937                         if( $rc_type == RC_LOG ) {
 938                                 $link = $rcObj->timestamp;
 939                         # Revision link
 940                         } else if( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
 941                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
 942                         } else {
 943                                 if ( $rcObj->unpatrolled && $rc_type == RC_NEW) {
 944                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
 945                                 }
 946
 947                                 $link = $this->skin->link(
 948                                                 $rcObj->getTitle(),
 949                                                 $rcObj->timestamp,
 950                                                 array(),
 951                                                 $params,
 952                                                 array( 'known', 'noclasses' )
 953                                         );
 954                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
 955                                         $link = '<span class="history-deleted">'.$link.'</span> ';
 956                         }
 957                         $r .= $link . '</span>';
 958
 959                         if ( !$rc_type == RC_LOG || $rc_type == RC_NEW ) {
 960                                 $r .= ' (';
 961                                 $r .= $rcObj->curlink;
 962                                 $r .= $this->message['pipe-separator'];
 963                                 $r .= $rcObj->lastlink;
 964                                 $r .= ')';
 965                         }
 966                         $r .= ' . . ';
 967
 968                         # Character diff
 969                         if( $wgRCShowChangedSize ) {
 970                                 $r .= ( $rcObj->getCharacterDifference() == '' ? '' : $rcObj->getCharacterDifference() . ' . . ' ) ;
 971                         }
 972                         # User links
 973                         $r .= $rcObj->userlink;
 974                         $r .= $rcObj->usertalklink;
 975                         // log action
 976                         $this->insertAction( $r, $rcObj );
 977                         // log comment
 978                         $this->insertComment( $r, $rcObj );
 979                         # Rollback
 980                         $this->insertRollback( $r, $rcObj );
 981                         # Tags
 982                         $this->insertTags( $r, $rcObj, $classes );
 983
 984                         $r .= "</td></tr>\n";
 985                 }
 986                 $r .= "</table></div>\n";
 987
 988                 $this->rcCacheIndex++;
 989
 990                 wfProfileOut( __METHOD__ );
 991
 992                 return $r;
 993         }
 994
 995         /**
 996          * Generate HTML for an arrow or placeholder graphic
 997          * @param $dir String: one of '', 'd', 'l', 'r'
 998          * @param $alt String: text
 999          * @param $title String: text
1000          * @return String: HTML <img> tag
1001          */
1002         protected function arrow( $dir, $alt='', $title='' ) {
1003                 global $wgStylePath;
1004                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1005                 $encAlt = htmlspecialchars( $alt );
1006                 $encTitle = htmlspecialchars( $title );
1007                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1008         }
1009
1010         /**
1011          * Generate HTML for a right- or left-facing arrow,
1012          * depending on language direction.
1013          * @return String: HTML <img> tag
1014          */
1015         protected function sideArrow() {
1016                 global $wgContLang;
1017                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
1018                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1019         }
1020
1021         /**
1022          * Generate HTML for a down-facing arrow
1023          * depending on language direction.
1024          * @return String: HTML <img> tag
1025          */
1026         protected function downArrow() {
1027                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1028         }
1029
1030         /**
1031          * Generate HTML for a spacer image
1032          * @return String: HTML <img> tag
1033          */
1034         protected function spacerArrow() {
1035                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1036         }
1037
1038         /**
1039          * Add a set of spaces
1040          * @return String: HTML <td> tag
1041          */
1042         protected function spacerIndent() {
1043                 return '&#160;&#160;&#160;&#160;&#160;';
1044         }
1045
1046         /**
1047          * Enhanced RC ungrouped line.
1048          * @return String: a HTML formated line (generated using $r)
1049          */
1050         protected function recentChangesBlockLine( $rcObj ) {
1051                 global $wgRCShowChangedSize;
1052
1053                 wfProfileIn( __METHOD__ );
1054
1055                 # Extract fields from DB into the function scope (rc_xxxx variables)
1056                 // FIXME: Would be good to replace this extract() call with something
1057                 // that explicitly initializes variables.
1058                 // TODO implement
1059                 extract( $rcObj->mAttribs );
1060                 $query['curid'] = $rc_cur_id;
1061
1062                 if( $rc_log_type ) {
1063                         # Log entry
1064                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $rc_log_type . '-' . $rcObj->mAttribs['rc_title'] );
1065                 } else {
1066                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1067                 }
1068                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1069                         Html::openElement( 'tr' );
1070
1071                 $r .= '<td class="mw-enhanced-rc">' . $this->spacerArrow() . '&#160;';
1072                 # Flag and Timestamp
1073                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
1074                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1075                 } else {
1076                         $r .= $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $rcObj->unpatrolled, '&#160;', $rc_bot );
1077                 }
1078                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td style="padding:0px;">';
1079                 # Article or log link
1080                 if( $rc_log_type ) {
1081                         $logtitle = Title::newFromText( "Log/$rc_log_type", NS_SPECIAL );
1082                         $logname = LogPage::logName( $rc_log_type );
1083                         $r .= '(' . $this->skin->link(
1084                                 $logtitle,
1085                                 $logname,
1086                                 array(),
1087                                 array(),
1088                                 array( 'known', 'noclasses' )
1089                         ) . ')';
1090                 } else {
1091                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1092                 }
1093                 # Diff and hist links
1094                 if ( $rc_type != RC_LOG ) {
1095                         $r .= ' ('. $rcObj->difflink . $this->message['pipe-separator'];
1096                         $query['action'] = 'history';
1097                         $r .= $this->skin->link(
1098                                 $rcObj->getTitle(),
1099                                 $this->message['hist'],
1100                                 array(),
1101                                 $query,
1102                                 array( 'known', 'noclasses' )
1103                         ) . ')';
1104                 }
1105                 $r .= ' . . ';
1106                 # Character diff
1107                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1108                         $r .= "$cd . . ";
1109                 }
1110                 # User/talk
1111                 $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1112                 # Log action (if any)
1113                 if( $rc_log_type ) {
1114                         if( $this->isDeleted($rcObj,LogPage::DELETED_ACTION) ) {
1115                                 $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
1116                         } else {
1117                                 $r .= ' ' . LogPage::actionText( $rc_log_type, $rc_log_action, $rcObj->getTitle(),
1118                                         $this->skin, LogPage::extractParams($rc_params), true, true );
1119                         }
1120                 }
1121                 $this->insertComment( $r, $rcObj );
1122                 $this->insertRollback( $r, $rcObj );
1123                 # Tags
1124                 $this->insertTags( $r, $rcObj, $classes );
1125                 # Show how many people are watching this if enabled
1126                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1127
1128                 $r .= "</td></tr></table>\n";
1129
1130                 wfProfileOut( __METHOD__ );
1131
1132                 return $r;
1133         }
1134
1135         /**
1136          * If enhanced RC is in use, this function takes the previously cached
1137          * RC lines, arranges them, and outputs the HTML
1138          */
1139         protected function recentChangesBlock() {
1140                 if( count ( $this->rc_cache ) == 0 ) {
1141                         return '';
1142                 }
1143
1144                 wfProfileIn( __METHOD__ );
1145
1146                 $blockOut = '';
1147                 foreach( $this->rc_cache as $block ) {
1148                         if( count( $block ) < 2 ) {
1149                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1150                         } else {
1151                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1152                         }
1153                 }
1154
1155                 wfProfileOut( __METHOD__ );
1156
1157                 return '<div>'.$blockOut.'</div>';
1158         }
1159
1160         /**
1161          * Returns text for the end of RC
1162          * If enhanced RC is in use, returns pretty much all the text
1163          */
1164         public function endRecentChangesList() {
1165                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1166         }
1167
1168 }