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          * Returns the appropriate flags for new page, minor change and patrolling
  86          * @param $flags Associative array of 'flag' => Bool
  87          * @param $nothing String to use for empty space
  88          * @return String
  89          */
  90         protected function recentChangesFlags( $flags, $nothing = '&#160;' ) {
  91                 $f = '';
  92                 foreach( array( 'newpage', 'minor', 'bot', 'unpatrolled' ) as $flag ){
  93                         $f .= isset( $flags[$flag] ) && $flags[$flag]
  94                                 ? self::flag( $flag )
  95                                 : $nothing;
  96                 }
  97                 return $f;
  98         }
  99
 100         /**
 101          * Provide the <abbr> element appropriate to a given abbreviated flag,
 102          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 103          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 104          * "!" respectively, plus it will have an appropriate title and class.
 105          *
 106          * @param $key String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 107          * @return String: Raw HTML
 108          */
 109         public static function flag( $flag ) {
 110                 static $messages = null;
 111                 if ( is_null( $messages ) ) {
 112                         $messages = array(
 113                                 'newpage' => array( 'newpageletter', 'recentchanges-label-newpage' ),
 114                                 'minoredit' => array( 'minoreditletter', 'recentchanges-label-minor' ),
 115                                 'botedit' => array( 'boteditletter', 'recentchanges-label-bot' ),
 116                                 'unpatrolled' => array( 'unpatrolledletter', 'recentchanges-label-unpatrolled' ),
 117                         );
 118                         foreach( $messages as $key => &$value ) {
 119                                 $value[0] = wfMsgExt( $value[0], 'escapenoentities' );
 120                                 $value[1] = wfMsgExt( $value[1], 'escapenoentities' );
 121                         }
 122                 }
 123
 124                 # Inconsistent naming, bleh
 125                 $map = array(
 126                         'newpage' => 'newpage',
 127                         'minor' => 'minoredit',
 128                         'bot' => 'botedit',
 129                         'unpatrolled' => 'unpatrolled',
 130                         'minoredit' => 'minoredit',
 131                         'botedit' => 'botedit',
 132                 );
 133                 $flag = $map[$flag];
 134
 135                 return "<abbr class='$flag' title='" . $messages[$flag][1] . "'>" . $messages[$flag][0] . '</abbr>';
 136         }
 137
 138         /**
 139          * Returns text for the start of the tabular part of RC
 140          * @return String
 141          */
 142         public function beginRecentChangesList() {
 143                 $this->rc_cache = array();
 144                 $this->rcMoveIndex = 0;
 145                 $this->rcCacheIndex = 0;
 146                 $this->lastdate = '';
 147                 $this->rclistOpen = false;
 148                 return '';
 149         }
 150
 151         /**
 152          * Show formatted char difference
 153          * @param $old Integer: bytes
 154          * @param $new Integer: bytes
 155          * @returns String
 156          */
 157         public static function showCharacterDifference( $old, $new ) {
 158                 global $wgRCChangedSizeThreshold, $wgLang, $wgMiserMode;
 159                 $szdiff = $new - $old;
 160
 161                 $code = $wgLang->getCode();
 162                 static $fastCharDiff = array();
 163                 if ( !isset($fastCharDiff[$code]) ) {
 164                         $fastCharDiff[$code] = $wgMiserMode || wfMsgNoTrans( 'rc-change-size' ) === '$1';
 165                 }
 166
 167                 $formatedSize = $wgLang->formatNum($szdiff);
 168
 169                 if ( !$fastCharDiff[$code] ) {
 170                         $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape' ), $formatedSize );
 171                 }
 172
 173                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 174                         $tag = 'strong';
 175                 } else {
 176                     $tag = 'span';
 177                 }
 178                 if( $szdiff === 0 ) {
 179                         return "<$tag class='mw-plusminus-null'>($formatedSize)</$tag>";
 180                 } elseif( $szdiff > 0 ) {
 181                         return "<$tag class='mw-plusminus-pos'>(+$formatedSize)</$tag>";
 182             } else {
 183                         return "<$tag class='mw-plusminus-neg'>($formatedSize)</$tag>";
 184                 }
 185         }
 186
 187         /**
 188          * Returns text for the end of RC
 189          * @return String
 190          */
 191         public function endRecentChangesList() {
 192                 if( $this->rclistOpen ) {
 193                         return "</ul>\n";
 194                 } else {
 195                         return '';
 196                 }
 197         }
 198
 199         public function insertMove( &$s, $rc ) {
 200                 # Diff
 201                 $s .= '(' . $this->message['diff'] . ') (';
 202                 # Hist
 203                 $s .= $this->skin->link(
 204                         $rc->getMovedToTitle(),
 205                         $this->message['hist'],
 206                         array(),
 207                         array( 'action' => 'history' ),
 208                         array( 'known', 'noclasses' )
 209                 ) . ') . . ';
 210                 # "[[x]] moved to [[y]]"
 211                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 212                 $s .= wfMsg(
 213                         $msg,
 214                         $this->skin->link(
 215                                 $rc->getTitle(),
 216                                 null,
 217                                 array(),
 218                                 array( 'redirect' => 'no' ),
 219                                 array( 'known', 'noclasses' )
 220                         ),
 221                         $this->skin->link(
 222                                 $rc->getMovedToTitle(),
 223                                 null,
 224                                 array(),
 225                                 array(),
 226                                 array( 'known', 'noclasses' )
 227                         )
 228                 );
 229         }
 230
 231         public function insertDateHeader( &$s, $rc_timestamp ) {
 232                 global $wgLang;
 233                 # Make date header if necessary
 234                 $date = $wgLang->date( $rc_timestamp, true, true );
 235                 if( $date != $this->lastdate ) {
 236                         if( $this->lastdate != '' ) {
 237                                 $s .= "</ul>\n";
 238                         }
 239                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 240                         $this->lastdate = $date;
 241                         $this->rclistOpen = true;
 242                 }
 243         }
 244
 245         public function insertLog( &$s, $title, $logtype ) {
 246                 $logname = LogPage::logName( $logtype );
 247                 $s .= '(' . $this->skin->link(
 248                         $title,
 249                         $logname,
 250                         array(),
 251                         array(),
 252                         array( 'known', 'noclasses' )
 253                 ) . ')';
 254         }
 255
 256         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 257                 # Diff link
 258                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 259                         $diffLink = $this->message['diff'];
 260                 } else if( !self::userCan($rc,Revision::DELETED_TEXT) ) {
 261                         $diffLink = $this->message['diff'];
 262                 } else {
 263                         $query = array(
 264                                 'curid' => $rc->mAttribs['rc_cur_id'],
 265                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 266                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 267                         );
 268
 269                         if( $unpatrolled ) {
 270                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 271                         };
 272
 273                         $diffLink = $this->skin->link(
 274                                 $rc->getTitle(),
 275                                 $this->message['diff'],
 276                                 array( 'tabindex' => $rc->counter ),
 277                                 $query,
 278                                 array( 'known', 'noclasses' )
 279                         );
 280                 }
 281                 $s .= '(' . $diffLink . $this->message['pipe-separator'];
 282                 # History link
 283                 $s .= $this->skin->link(
 284                         $rc->getTitle(),
 285                         $this->message['hist'],
 286                         array(),
 287                         array(
 288                                 'curid' => $rc->mAttribs['rc_cur_id'],
 289                                 'action' => 'history'
 290                         ),
 291                         array( 'known', 'noclasses' )
 292                 );
 293                 $s .= ') . . ';
 294         }
 295
 296         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 297                 global $wgContLang;
 298                 # If it's a new article, there is no diff link, but if it hasn't been
 299                 # patrolled yet, we need to give users a way to do so
 300                 $params = array();
 301
 302                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 303                         $params['rcid'] = $rc->mAttribs['rc_id'];
 304                 }
 305
 306                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 307                         $articlelink = $this->skin->link(
 308                                 $rc->getTitle(),
 309                                 null,
 310                                 array(),
 311                                 $params,
 312                                 array( 'known', 'noclasses' )
 313                         );
 314                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 315                 } else {
 316                         $articlelink = ' '. $this->skin->link(
 317                                 $rc->getTitle(),
 318                                 null,
 319                                 array(),
 320                                 $params,
 321                                 array( 'known', 'noclasses' )
 322                         );
 323                 }
 324                 # Bolden pages watched by this user
 325                 if( $watched ) {
 326                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 327                 }
 328                 # RTL/LTR marker
 329                 $articlelink .= $wgContLang->getDirMark();
 330
 331                 wfRunHooks( 'ChangesListInsertArticleLink',
 332                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 333
 334                 $s .= " $articlelink";
 335         }
 336
 337         public function insertTimestamp( &$s, $rc ) {
 338                 global $wgLang;
 339                 $s .= $this->message['semicolon-separator'] .
 340                         $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 341         }
 342
 343         /** Insert links to user page, user talk page and eventually a blocking link */
 344         public function insertUserRelatedLinks( &$s, &$rc ) {
 345                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 346                    $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 347                 } else {
 348                   $s .= $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 349                   $s .= $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 350                 }
 351         }
 352
 353         /** insert a formatted action */
 354         public function insertAction( &$s, &$rc ) {
 355                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 356                         if( $this->isDeleted( $rc, LogPage::DELETED_ACTION ) ) {
 357                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 358                         } else {
 359                                 $s .= ' '.LogPage::actionText( $rc->mAttribs['rc_log_type'], $rc->mAttribs['rc_log_action'],
 360                                         $rc->getTitle(), $this->skin, LogPage::extractParams( $rc->mAttribs['rc_params'] ), true, true );
 361                         }
 362                 }
 363         }
 364
 365         /** insert a formatted comment */
 366         public function insertComment( &$s, &$rc ) {
 367                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 368                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 369                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 370                         } else {
 371                                 $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 372                         }
 373                 }
 374         }
 375
 376         /**
 377          * Check whether to enable recent changes patrol features
 378          * @return Boolean
 379          */
 380         public static function usePatrol() {
 381                 global $wgUser;
 382                 return $wgUser->useRCPatrol();
 383         }
 384
 385         /**
 386          * Returns the string which indicates the number of watching users
 387          */
 388         protected function numberofWatchingusers( $count ) {
 389                 global $wgLang;
 390                 static $cache = array();
 391                 if( $count > 0 ) {
 392                         if( !isset( $cache[$count] ) ) {
 393                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 394                                         array('parsemag', 'escape' ), $wgLang->formatNum( $count ) );
 395                         }
 396                         return $cache[$count];
 397                 } else {
 398                         return '';
 399                 }
 400         }
 401
 402         /**
 403          * Determine if said field of a revision is hidden
 404          * @param $rc RCCacheEntry
 405          * @param $field Integer: one of DELETED_* bitfield constants
 406          * @return Boolean
 407          */
 408         public static function isDeleted( $rc, $field ) {
 409                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 410         }
 411
 412         /**
 413          * Determine if the current user is allowed to view a particular
 414          * field of this revision, if it's marked as deleted.
 415          * @param $rc RCCacheEntry
 416          * @param $field Integer
 417          * @return Boolean
 418          */
 419         public static function userCan( $rc, $field ) {
 420                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 421                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 422                 } else {
 423                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 424                 }
 425         }
 426
 427         protected function maybeWatchedLink( $link, $watched = false ) {
 428                 if( $watched ) {
 429                         return '<strong class="mw-watched">' . $link . '</strong>';
 430                 } else {
 431                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 432                 }
 433         }
 434
 435         /** Inserts a rollback link */
 436         public function insertRollback( &$s, &$rc ) {
 437                 global $wgUser;
 438                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 439                         $page = $rc->getTitle();
 440                         /** Check for rollback and edit permissions, disallow special pages, and only
 441                           * show a link on the top-most revision */
 442                         if ($wgUser->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 443                         {
 444                                 $rev = new Revision( array(
 445                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 446                                         'user'      => $rc->mAttribs['rc_user'],
 447                                         'user_text' => $rc->mAttribs['rc_user_text'],
 448                                         'deleted'   => $rc->mAttribs['rc_deleted']
 449                                 ) );
 450                                 $rev->setTitle( $page );
 451                                 $s .= ' '.$this->skin->generateRollback( $rev );
 452                         }
 453                 }
 454         }
 455
 456         public function insertTags( &$s, &$rc, &$classes ) {
 457                 if ( empty($rc->mAttribs['ts_tags']) )
 458                         return;
 459
 460                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 461                 $classes = array_merge( $classes, $newClasses );
 462                 $s .= ' ' . $tagSummary;
 463         }
 464
 465         public function insertExtra( &$s, &$rc, &$classes ) {
 466                 ## Empty, used for subclassers to add anything special.
 467         }
 468 }
 469
 470
 471 /**
 472  * Generate a list of changes using the good old system (no javascript)
 473  */
 474 class OldChangesList extends ChangesList {
 475         /**
 476          * Format a line using the old system (aka without any javascript).
 477          */
 478         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 479                 global $wgLang, $wgRCShowChangedSize, $wgUser;
 480                 wfProfileIn( __METHOD__ );
 481                 # Should patrol-related stuff be shown?
 482                 $unpatrolled = $wgUser->useRCPatrol() && !$rc->mAttribs['rc_patrolled'];
 483
 484                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 485                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 486
 487                 $s = '';
 488                 $classes = array();
 489                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 490                 if( $linenumber ) {
 491                         if( $linenumber & 1 ) {
 492                                 $classes[] = 'mw-line-odd';
 493                         }
 494                         else {
 495                                 $classes[] = 'mw-line-even';
 496                         }
 497                 }
 498
 499                 // Moved pages
 500                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 501                         $this->insertMove( $s, $rc );
 502                 // Log entries
 503                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 504                         $logtitle = Title::newFromText( 'Log/'.$rc->mAttribs['rc_log_type'], NS_SPECIAL );
 505                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 506                 // Log entries (old format) or log targets, and special pages
 507                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 508                         list( $name, $subpage ) = SpecialPage::resolveAliasWithSubpage( $rc->mAttribs['rc_title'] );
 509                         if( $name == 'Log' ) {
 510                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 511                         }
 512                 // Regular entries
 513                 } else {
 514                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 515                         # M, N, b and ! (minor, new, bot and unpatrolled)
 516                         $s .= $this->recentChangesFlags(
 517                                 array(
 518                                         'newpage' => $rc->mAttribs['rc_new'],
 519                                         'minor' => $rc->mAttribs['rc_minor'],
 520                                         'unpatrolled' => $unpatrolled,
 521                                         'bot' => $rc->mAttribs['rc_bot']
 522                                 ),
 523                                 ''
 524                         );
 525                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 526                 }
 527                 # Edit/log timestamp
 528                 $this->insertTimestamp( $s, $rc );
 529                 # Bytes added or removed
 530                 if( $wgRCShowChangedSize ) {
 531                         $cd = $rc->getCharacterDifference();
 532                         if( $cd != '' ) {
 533                                 $s .= "$cd  . . ";
 534                         }
 535                 }
 536                 # User tool links
 537                 $this->insertUserRelatedLinks( $s, $rc );
 538                 # Log action text (if any)
 539                 $this->insertAction( $s, $rc );
 540                 # Edit or log comment
 541                 $this->insertComment( $s, $rc );
 542                 # Tags
 543                 $this->insertTags( $s, $rc, $classes );
 544                 # Rollback
 545                 $this->insertRollback( $s, $rc );
 546                 # For subclasses
 547                 $this->insertExtra( $s, $rc, $classes );
 548
 549                 # How many users watch this page
 550                 if( $rc->numberofWatchingusers > 0 ) {
 551                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 552                                 array( 'parsemag', 'escape' ), $wgLang->formatNum( $rc->numberofWatchingusers ) );
 553                 }
 554
 555                 if( $this->watchlist ) {
 556                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 557                 }
 558
 559                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 560
 561                 wfProfileOut( __METHOD__ );
 562                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 563         }
 564 }
 565
 566
 567 /**
 568  * Generate a list of changes using an Enhanced system (uses javascript).
 569  */
 570 class EnhancedChangesList extends ChangesList {
 571         /**
 572          * Add the JavaScript file for enhanced changeslist
 573          * @return String
 574          */
 575         public function beginRecentChangesList() {
 576                 global $wgOut;
 577                 $this->rc_cache = array();
 578                 $this->rcMoveIndex = 0;
 579                 $this->rcCacheIndex = 0;
 580                 $this->lastdate = '';
 581                 $this->rclistOpen = false;
 582                 $wgOut->addModuleStyles( 'mediawiki.special.changeslist' );
 583                 return '';
 584         }
 585         /**
 586          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 587          */
 588         public function recentChangesLine( &$baseRC, $watched = false ) {
 589                 global $wgLang, $wgUser;
 590
 591                 wfProfileIn( __METHOD__ );
 592
 593                 # Create a specialised object
 594                 $rc = RCCacheEntry::newFromParent( $baseRC );
 595
 596                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 597
 598                 # If it's a new day, add the headline and flush the cache
 599                 $date = $wgLang->date( $rc->mAttribs['rc_timestamp'], true );
 600                 $ret = '';
 601                 if( $date != $this->lastdate ) {
 602                         # Process current cache
 603                         $ret = $this->recentChangesBlock();
 604                         $this->rc_cache = array();
 605                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 606                         $this->lastdate = $date;
 607                 }
 608
 609                 # Should patrol-related stuff be shown?
 610                 if( $wgUser->useRCPatrol() ) {
 611                         $rc->unpatrolled = !$rc->mAttribs['rc_patrolled'];
 612                 } else {
 613                         $rc->unpatrolled = false;
 614                 }
 615
 616                 $showdifflinks = true;
 617                 # Make article link
 618                 $type = $rc->mAttribs['rc_type'];
 619                 $logType = $rc->mAttribs['rc_log_type'];
 620                 // Page moves
 621                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 622                         $msg = ( $type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 623                         $clink = wfMsg( $msg, $this->skin->linkKnown( $rc->getTitle(), null,
 624                                 array(), array( 'redirect' => 'no' ) ),
 625                                 $this->skin->linkKnown( $rc->getMovedToTitle() ) );
 626                 // New unpatrolled pages
 627                 } else if( $rc->unpatrolled && $type == RC_NEW ) {
 628                         $clink = $this->skin->linkKnown( $rc->getTitle(), null, array(),
 629                                 array( 'rcid' => $rc->mAttribs['rc_id'] ) );
 630                 // Log entries
 631                 } else if( $type == RC_LOG ) {
 632                         if( $logType ) {
 633                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 634                                 $clink = '(' . $this->skin->linkKnown( $logtitle,
 635                                         LogPage::logName( $logType ) ) . ')';
 636                         } else {
 637                                 $clink = $this->skin->link( $rc->getTitle() );
 638                         }
 639                         $watched = false;
 640                 // Log entries (old format) and special pages
 641                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 642                         list( $specialName, $logtype ) = SpecialPage::resolveAliasWithSubpage( $rc->mAttribs['rc_title'] );
 643                         if ( $specialName == 'Log' ) {
 644                                 # Log updates, etc
 645                                 $logname = LogPage::logName( $logtype );
 646                                 $clink = '(' . $this->skin->linkKnown( $rc->getTitle(), $logname ) . ')';
 647                         } else {
 648                                 wfDebug( "Unexpected special page in recentchanges\n" );
 649                                 $clink = '';
 650                         }
 651                 // Edits
 652                 } else {
 653                         $clink = $this->skin->linkKnown( $rc->getTitle() );
 654                 }
 655
 656                 # Don't show unusable diff links
 657                 if ( !ChangesList::userCan($rc,Revision::DELETED_TEXT) ) {
 658                         $showdifflinks = false;
 659                 }
 660
 661                 $time = $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true );
 662                 $rc->watched = $watched;
 663                 $rc->link = $clink;
 664                 $rc->timestamp = $time;
 665                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 666
 667                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 668                 # called too many times (50% of CPU time on RecentChanges!).
 669                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 670                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 671                 if( $rc->unpatrolled ) {
 672                         $rcIdQuery = array( 'rcid' => $rc->mAttribs['rc_id'] );
 673                 } else {
 674                         $rcIdQuery = array();
 675                 }
 676                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 677                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' =>
 678                         $lastOldid ) + $rcIdQuery;
 679
 680                 if( !$showdifflinks ) {
 681                         $curLink = $this->message['cur'];
 682                         $diffLink = $this->message['diff'];
 683                 } else if( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 684                         if ( $type != RC_NEW ) {
 685                                 $curLink = $this->message['cur'];
 686                         } else {
 687                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 688                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 689                         }
 690                         $diffLink = $this->message['diff'];
 691                 } else {
 692                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querydiff ) );
 693                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 694                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 695                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 696                 }
 697
 698                 # Make "last" link
 699                 if( !$showdifflinks || !$lastOldid ) {
 700                         $lastLink = $this->message['last'];
 701                 } else if( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 702                         $lastLink = $this->message['last'];
 703                 } else {
 704                         $lastLink = $this->skin->linkKnown( $rc->getTitle(), $this->message['last'],
 705                                 array(), $curIdEq + array('diff' => $thisOldid, 'oldid' => $lastOldid) + $rcIdQuery );
 706                 }
 707
 708                 # Make user links
 709                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 710                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 711                 } else {
 712                         $rc->userlink = $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 713                         $rc->usertalklink = $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 714                 }
 715
 716                 $rc->lastlink = $lastLink;
 717                 $rc->curlink  = $curLink;
 718                 $rc->difflink = $diffLink;
 719
 720                 # Put accumulated information into the cache, for later display
 721                 # Page moves go on their own line
 722                 $title = $rc->getTitle();
 723                 $secureName = $title->getPrefixedDBkey();
 724                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 725                         # Use an @ character to prevent collision with page names
 726                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 727                 } else {
 728                         # Logs are grouped by type
 729                         if( $type == RC_LOG ){
 730                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 731                         }
 732                         if( !isset( $this->rc_cache[$secureName] ) ) {
 733                                 $this->rc_cache[$secureName] = array();
 734                         }
 735
 736                         array_push( $this->rc_cache[$secureName], $rc );
 737                 }
 738
 739                 wfProfileOut( __METHOD__ );
 740
 741                 return $ret;
 742         }
 743
 744         /**
 745          * Enhanced RC group
 746          */
 747         protected function recentChangesBlockGroup( $block ) {
 748                 global $wgLang, $wgContLang, $wgRCShowChangedSize;
 749
 750                 wfProfileIn( __METHOD__ );
 751
 752                 # Add the namespace and title of the block as part of the class
 753                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 754                         # Log entry
 755                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 756                 } else {
 757                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 758                 }
 759                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 760                         Html::openElement( 'tr' );
 761
 762                 # Collate list of users
 763                 $userlinks = array();
 764                 # Other properties
 765                 $unpatrolled = false;
 766                 $isnew = false;
 767                 $curId = $currentRevision = 0;
 768                 # Some catalyst variables...
 769                 $namehidden = true;
 770                 $allLogs = true;
 771                 foreach( $block as $rcObj ) {
 772                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 773                         if( $rcObj->mAttribs['rc_new'] ) {
 774                                 $isnew = true;
 775                         }
 776                         // If all log actions to this page were hidden, then don't
 777                         // give the name of the affected page for this block!
 778                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 779                                 $namehidden = false;
 780                         }
 781                         $u = $rcObj->userlink;
 782                         if( !isset( $userlinks[$u] ) ) {
 783                                 $userlinks[$u] = 0;
 784                         }
 785                         if( $rcObj->unpatrolled ) {
 786                                 $unpatrolled = true;
 787                         }
 788                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 789                                 $allLogs = false;
 790                         }
 791                         # Get the latest entry with a page_id and oldid
 792                         # since logs may not have these.
 793                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 794                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 795                         }
 796                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 797                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 798                         }
 799
 800                         $bot = $rcObj->mAttribs['rc_bot'];
 801                         $userlinks[$u]++;
 802                 }
 803
 804                 # Sort the list and convert to text
 805                 krsort( $userlinks );
 806                 asort( $userlinks );
 807                 $users = array();
 808                 foreach( $userlinks as $userlink => $count) {
 809                         $text = $userlink;
 810                         $text .= $wgContLang->getDirMark();
 811                         if( $count > 1 ) {
 812                                 $text .= ' (' . $wgLang->formatNum( $count ) . '×)';
 813                         }
 814                         array_push( $users, $text );
 815                 }
 816
 817                 $users = ' <span class="changedby">[' .
 818                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 819
 820                 # Title for <a> tags
 821                 $expandTitle = htmlspecialchars( wfMsg( 'rc-enhanced-expand' ) );
 822                 $closeTitle = htmlspecialchars( wfMsg( 'rc-enhanced-hide' ) );
 823
 824                 $tl = "<span class='mw-collapsible-toggle'>"
 825                         . "<span class='mw-rc-openarrow'>"
 826                         . "<a href='#' title='$expandTitle'>{$this->sideArrow()}</a>"
 827                         . "</span><span class='mw-rc-closearrow'>"
 828                         . "<a href='#' title='$closeTitle'>{$this->downArrow()}</a>"
 829                         . "</span></span>";
 830                 $r .= "<td>$tl</td>";
 831
 832                 # Main line
 833                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 834                         'newpage' => $isnew,
 835                         'minor' => false,
 836                         'unpatrolled' => $unpatrolled,
 837                         'bot' => $bot ,
 838                 ) );
 839
 840                 # Timestamp
 841                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td>';
 842
 843                 # Article link
 844                 if( $namehidden ) {
 845                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 846                 } else if( $allLogs ) {
 847                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 848                 } else {
 849                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 850                 }
 851
 852                 $r .= $wgContLang->getDirMark();
 853
 854                 $queryParams['curid'] = $curId;
 855                 # Changes message
 856                 $n = count($block);
 857                 static $nchanges = array();
 858                 if ( !isset( $nchanges[$n] ) ) {
 859                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) );
 860                 }
 861                 # Total change link
 862                 $r .= ' ';
 863                 if( !$allLogs ) {
 864                         $r .= '(';
 865                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT ) ) {
 866                                 $r .= $nchanges[$n];
 867                         } else if( $isnew ) {
 868                                 $r .= $nchanges[$n];
 869                         } else {
 870                                 $params = $queryParams;
 871                                 $params['diff'] = $currentRevision;
 872                                 $params['oldid'] = $oldid;
 873
 874                                 $r .= $this->skin->link(
 875                                         $block[0]->getTitle(),
 876                                         $nchanges[$n],
 877                                         array(),
 878                                         $params,
 879                                         array( 'known', 'noclasses' )
 880                                 );
 881                         }
 882                 }
 883
 884                 # History
 885                 if( $allLogs ) {
 886                         // don't show history link for logs
 887                 } else if( $namehidden || !$block[0]->getTitle()->exists() ) {
 888                         $r .= $this->message['pipe-separator'] . $this->message['hist'] . ')';
 889                 } else {
 890                         $params = $queryParams;
 891                         $params['action'] = 'history';
 892
 893                         $r .= $this->message['pipe-separator'] .
 894                                 $this->skin->link(
 895                                         $block[0]->getTitle(),
 896                                         $this->message['hist'],
 897                                         array(),
 898                                         $params,
 899                                         array( 'known', 'noclasses' )
 900                                 ) . ')';
 901                 }
 902                 $r .= ' . . ';
 903
 904                 # Character difference (does not apply if only log items)
 905                 if( $wgRCShowChangedSize && !$allLogs ) {
 906                         $last = 0;
 907                         $first = count($block) - 1;
 908                         # Some events (like logs) have an "empty" size, so we need to skip those...
 909                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 910                                 $last++;
 911                         }
 912                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 913                                 $first--;
 914                         }
 915                         # Get net change
 916                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 917                                 $block[$last]->mAttribs['rc_new_len'] );
 918
 919                         if( $chardiff == '' ) {
 920                                 $r .= ' ';
 921                         } else {
 922                                 $r .= ' ' . $chardiff. ' . . ';
 923                         }
 924                 }
 925
 926                 $r .= $users;
 927                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 928
 929                 # Sub-entries
 930                 foreach( $block as $rcObj ) {
 931                         # Classes to apply -- TODO implement
 932                         $classes = array();
 933                         $type = $rcObj->mAttribs['rc_type'];
 934
 935                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 936                         $r .= '<tr><td></td><td class="mw-enhanced-rc">';
 937                         $r .= $this->recentChangesFlags( array(
 938                                 'newpage' => $rcObj->mAttribs['rc_new'],
 939                                 'minor' => $rcObj->mAttribs['rc_minor'],
 940                                 'unpatrolled' => $rcObj->unpatrolled,
 941                                 'bot' => $rcObj->mAttribs['rc_bot'],
 942                         ) );
 943                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
 944
 945                         $params = $queryParams;
 946
 947                         if( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 948                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 949                         }
 950
 951                         # Log timestamp
 952                         if( $type == RC_LOG ) {
 953                                 $link = $rcObj->timestamp;
 954                         # Revision link
 955                         } else if( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
 956                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
 957                         } else {
 958                                 if ( $rcObj->unpatrolled && $type == RC_NEW) {
 959                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
 960                                 }
 961
 962                                 $link = $this->skin->link(
 963                                                 $rcObj->getTitle(),
 964                                                 $rcObj->timestamp,
 965                                                 array(),
 966                                                 $params,
 967                                                 array( 'known', 'noclasses' )
 968                                         );
 969                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
 970                                         $link = '<span class="history-deleted">'.$link.'</span> ';
 971                         }
 972                         $r .= $link . '</span>';
 973
 974                         if ( !$type == RC_LOG || $type == RC_NEW ) {
 975                                 $r .= ' (';
 976                                 $r .= $rcObj->curlink;
 977                                 $r .= $this->message['pipe-separator'];
 978                                 $r .= $rcObj->lastlink;
 979                                 $r .= ')';
 980                         }
 981                         $r .= ' . . ';
 982
 983                         # Character diff
 984                         if( $wgRCShowChangedSize && $rcObj->getCharacterDifference() ) {
 985                                 $r .= $rcObj->getCharacterDifference() . ' . . ' ;
 986                         }
 987
 988                         # User links
 989                         $r .= $rcObj->userlink;
 990                         $r .= $rcObj->usertalklink;
 991                         // log action
 992                         $this->insertAction( $r, $rcObj );
 993                         // log comment
 994                         $this->insertComment( $r, $rcObj );
 995                         # Rollback
 996                         $this->insertRollback( $r, $rcObj );
 997                         # Tags
 998                         $this->insertTags( $r, $rcObj, $classes );
 999
1000                         $r .= "</td></tr>\n";
1001                 }
1002                 $r .= "</table>\n";
1003
1004                 $this->rcCacheIndex++;
1005
1006                 wfProfileOut( __METHOD__ );
1007
1008                 return $r;
1009         }
1010
1011         /**
1012          * Generate HTML for an arrow or placeholder graphic
1013          * @param $dir String: one of '', 'd', 'l', 'r'
1014          * @param $alt String: text
1015          * @param $title String: text
1016          * @return String: HTML <img> tag
1017          */
1018         protected function arrow( $dir, $alt='', $title='' ) {
1019                 global $wgStylePath;
1020                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1021                 $encAlt = htmlspecialchars( $alt );
1022                 $encTitle = htmlspecialchars( $title );
1023                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1024         }
1025
1026         /**
1027          * Generate HTML for a right- or left-facing arrow,
1028          * depending on language direction.
1029          * @return String: HTML <img> tag
1030          */
1031         protected function sideArrow() {
1032                 global $wgContLang;
1033                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
1034                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1035         }
1036
1037         /**
1038          * Generate HTML for a down-facing arrow
1039          * depending on language direction.
1040          * @return String: HTML <img> tag
1041          */
1042         protected function downArrow() {
1043                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1044         }
1045
1046         /**
1047          * Generate HTML for a spacer image
1048          * @return String: HTML <img> tag
1049          */
1050         protected function spacerArrow() {
1051                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1052         }
1053
1054         /**
1055          * Enhanced RC ungrouped line.
1056          * @return String: a HTML formated line (generated using $r)
1057          */
1058         protected function recentChangesBlockLine( $rcObj ) {
1059                 global $wgRCShowChangedSize;
1060
1061                 wfProfileIn( __METHOD__ );
1062                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1063
1064                 $type = $rcObj->mAttribs['rc_type'];
1065                 $logType = $rcObj->mAttribs['rc_log_type'];
1066                 if( $logType ) {
1067                         # Log entry
1068                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1069                 } else {
1070                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1071                 }
1072                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1073                         Html::openElement( 'tr' );
1074
1075                 $r .= '<td class="mw-enhanced-rc">' . $this->spacerArrow();
1076                 # Flag and Timestamp
1077                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1078                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1079                 } else {
1080                         $r .= $this->recentChangesFlags( array(
1081                                 'newpage' => $type == RC_NEW,
1082                                 'mino' => $rcObj->mAttribs['rc_minor'],
1083                                 'unpatrolled' => $rcObj->unpatrolled,
1084                                 'bot' => $rcObj->mAttribs['rc_bot'],
1085                         ) );
1086                 }
1087                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td>';
1088                 # Article or log link
1089                 if( $logType ) {
1090                         $logtitle = Title::newFromText( "Log/$logType", NS_SPECIAL );
1091                         $logname = LogPage::logName( $logType );
1092                         $r .= '(' . $this->skin->link(
1093                                 $logtitle,
1094                                 $logname,
1095                                 array(),
1096                                 array(),
1097                                 array( 'known', 'noclasses' )
1098                         ) . ')';
1099                 } else {
1100                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1101                 }
1102                 # Diff and hist links
1103                 if ( $type != RC_LOG ) {
1104                         $r .= ' ('. $rcObj->difflink . $this->message['pipe-separator'];
1105                         $query['action'] = 'history';
1106                         $r .= $this->skin->link(
1107                                 $rcObj->getTitle(),
1108                                 $this->message['hist'],
1109                                 array(),
1110                                 $query,
1111                                 array( 'known', 'noclasses' )
1112                         ) . ')';
1113                 }
1114                 $r .= ' . . ';
1115                 # Character diff
1116                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1117                         $r .= "$cd . . ";
1118                 }
1119                 # User/talk
1120                 $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1121                 # Log action (if any)
1122                 if( $logType ) {
1123                         if( $this->isDeleted($rcObj,LogPage::DELETED_ACTION) ) {
1124                                 $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
1125                         } else {
1126                                 $r .= ' ' . LogPage::actionText( $logType, $rcObj->mAttribs['rc_log_action'], $rcObj->getTitle(),
1127                                         $this->skin, LogPage::extractParams( $rcObj->mAttribs['rc_params'] ), true, true );
1128                         }
1129                 }
1130                 $this->insertComment( $r, $rcObj );
1131                 $this->insertRollback( $r, $rcObj );
1132                 # Tags
1133                 $this->insertTags( $r, $rcObj, $classes );
1134                 # Show how many people are watching this if enabled
1135                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1136
1137                 $r .= "</td></tr></table>\n";
1138
1139                 wfProfileOut( __METHOD__ );
1140
1141                 return $r;
1142         }
1143
1144         /**
1145          * If enhanced RC is in use, this function takes the previously cached
1146          * RC lines, arranges them, and outputs the HTML
1147          */
1148         protected function recentChangesBlock() {
1149                 if( count ( $this->rc_cache ) == 0 ) {
1150                         return '';
1151                 }
1152
1153                 wfProfileIn( __METHOD__ );
1154
1155                 $blockOut = '';
1156                 foreach( $this->rc_cache as $block ) {
1157                         if( count( $block ) < 2 ) {
1158                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1159                         } else {
1160                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1161                         }
1162                 }
1163
1164                 wfProfileOut( __METHOD__ );
1165
1166                 return '<div>'.$blockOut.'</div>';
1167         }
1168
1169         /**
1170          * Returns text for the end of RC
1171          * If enhanced RC is in use, returns pretty much all the text
1172          */
1173         public function endRecentChangesList() {
1174                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1175         }
1176
1177 }