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         /**
  20          * @param $rc RecentChange
  21          * @return RCCacheEntry
  22          */
  23         static function newFromParent( $rc ) {
  24                 $rc2 = new RCCacheEntry;
  25                 $rc2->mAttribs = $rc->mAttribs;
  26                 $rc2->mExtra = $rc->mExtra;
  27                 return $rc2;
  28         }
  29 }
  30
  31 /**
  32  * Base class for all changes lists
  33  */
  34 class ChangesList {
  35
  36         /**
  37          * @var Skin
  38          */
  39         public $skin;
  40
  41         protected $watchlist = false;
  42
  43         protected $message;
  44
  45         /**
  46         * Changeslist contructor
  47         * @param $skin Skin
  48         */
  49         public function __construct( $skin ) {
  50                 $this->skin = $skin;
  51                 $this->preCacheMessages();
  52         }
  53
  54         /**
  55          * Fetch an appropriate changes list class for the specified user
  56          * Some users might want to use an enhanced list format, for instance
  57          *
  58          * @param $user User to fetch the list class for
  59          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  60          */
  61         public static function newFromUser( $user ) {
  62                 global $wgRequest;
  63
  64                 $sk = $user->getSkin();
  65                 $list = null;
  66                 if( wfRunHooks( 'FetchChangesList', array( $user, &$sk, &$list ) ) ) {
  67                         $new = $wgRequest->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
  68                         return $new ? new EnhancedChangesList( $sk ) : new OldChangesList( $sk );
  69                 } else {
  70                         return $list;
  71                 }
  72         }
  73
  74         /**
  75          * Sets the list to use a <li class="watchlist-(namespace)-(page)"> tag
  76          * @param $value Boolean
  77          */
  78         public function setWatchlistDivs( $value = true ) {
  79                 $this->watchlist = $value;
  80         }
  81
  82         /**
  83          * As we use the same small set of messages in various methods and that
  84          * they are called often, we call them once and save them in $this->message
  85          */
  86         private function preCacheMessages() {
  87                 if( !isset( $this->message ) ) {
  88                         foreach ( explode( ' ', 'cur diff hist last blocklink history ' .
  89                         'semicolon-separator pipe-separator' ) as $msg ) {
  90                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
  91                         }
  92                 }
  93         }
  94
  95         /**
  96          * Returns the appropriate flags for new page, minor change and patrolling
  97          * @param $flags Array Associative array of 'flag' => Bool
  98          * @param $nothing String to use for empty space
  99          * @return String
 100          */
 101         protected function recentChangesFlags( $flags, $nothing = '&#160;' ) {
 102                 $f = '';
 103                 foreach( array( 'newpage', 'minor', 'bot', 'unpatrolled' ) as $flag ){
 104                         $f .= isset( $flags[$flag] ) && $flags[$flag]
 105                                 ? self::flag( $flag )
 106                                 : $nothing;
 107                 }
 108                 return $f;
 109         }
 110
 111         /**
 112          * Provide the <abbr> element appropriate to a given abbreviated flag,
 113          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 114          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 115          * "!" respectively, plus it will have an appropriate title and class.
 116          *
 117          * @param $flag String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 118          * @return String: Raw HTML
 119          */
 120         public static function flag( $flag ) {
 121                 static $messages = null;
 122                 if ( is_null( $messages ) ) {
 123                         $messages = array(
 124                                 'newpage' => array( 'newpageletter', 'recentchanges-label-newpage' ),
 125                                 'minoredit' => array( 'minoreditletter', 'recentchanges-label-minor' ),
 126                                 'botedit' => array( 'boteditletter', 'recentchanges-label-bot' ),
 127                                 'unpatrolled' => array( 'unpatrolledletter', 'recentchanges-label-unpatrolled' ),
 128                         );
 129                         foreach( $messages as &$value ) {
 130                                 $value[0] = wfMsgExt( $value[0], 'escapenoentities' );
 131                                 $value[1] = wfMsgExt( $value[1], 'escapenoentities' );
 132                         }
 133                 }
 134
 135                 # Inconsistent naming, bleh
 136                 $map = array(
 137                         'newpage' => 'newpage',
 138                         'minor' => 'minoredit',
 139                         'bot' => 'botedit',
 140                         'unpatrolled' => 'unpatrolled',
 141                         'minoredit' => 'minoredit',
 142                         'botedit' => 'botedit',
 143                 );
 144                 $flag = $map[$flag];
 145
 146                 return "<abbr class='$flag' title='" . $messages[$flag][1] . "'>" . $messages[$flag][0] . '</abbr>';
 147         }
 148
 149         /**
 150          * Returns text for the start of the tabular part of RC
 151          * @return String
 152          */
 153         public function beginRecentChangesList() {
 154                 $this->rc_cache = array();
 155                 $this->rcMoveIndex = 0;
 156                 $this->rcCacheIndex = 0;
 157                 $this->lastdate = '';
 158                 $this->rclistOpen = false;
 159                 return '';
 160         }
 161
 162         /**
 163          * Show formatted char difference
 164          * @param $old Integer: bytes
 165          * @param $new Integer: bytes
 166          * @return String
 167          */
 168         public static function showCharacterDifference( $old, $new ) {
 169                 global $wgRCChangedSizeThreshold, $wgLang, $wgMiserMode;
 170                 $szdiff = $new - $old;
 171
 172                 $code = $wgLang->getCode();
 173                 static $fastCharDiff = array();
 174                 if ( !isset($fastCharDiff[$code]) ) {
 175                         $fastCharDiff[$code] = $wgMiserMode || wfMsgNoTrans( 'rc-change-size' ) === '$1';
 176                 }
 177
 178                 $formatedSize = $wgLang->formatNum($szdiff);
 179
 180                 if ( !$fastCharDiff[$code] ) {
 181                         $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape' ), $formatedSize );
 182                 }
 183
 184                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 185                         $tag = 'strong';
 186                 } else {
 187                     $tag = 'span';
 188                 }
 189                 if( $szdiff === 0 ) {
 190                         return "<$tag class='mw-plusminus-null'>($formatedSize)</$tag>";
 191                 } elseif( $szdiff > 0 ) {
 192                         return "<$tag class='mw-plusminus-pos'>(+$formatedSize)</$tag>";
 193             } else {
 194                         return "<$tag class='mw-plusminus-neg'>($formatedSize)</$tag>";
 195                 }
 196         }
 197
 198         /**
 199          * Returns text for the end of RC
 200          * @return String
 201          */
 202         public function endRecentChangesList() {
 203                 if( $this->rclistOpen ) {
 204                         return "</ul>\n";
 205                 } else {
 206                         return '';
 207                 }
 208         }
 209
 210         /**
 211          * @param $s
 212          * @param $rc RecentChange
 213          * @return void
 214          */
 215         public function insertMove( &$s, $rc ) {
 216                 # Diff
 217                 $s .= '(' . $this->message['diff'] . ') (';
 218                 # Hist
 219                 $s .= $this->skin->link(
 220                         $rc->getMovedToTitle(),
 221                         $this->message['hist'],
 222                         array(),
 223                         array( 'action' => 'history' ),
 224                         array( 'known', 'noclasses' )
 225                 ) . ') . . ';
 226                 # "[[x]] moved to [[y]]"
 227                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 228                 $s .= wfMsg(
 229                         $msg,
 230                         $this->skin->link(
 231                                 $rc->getTitle(),
 232                                 null,
 233                                 array(),
 234                                 array( 'redirect' => 'no' ),
 235                                 array( 'known', 'noclasses' )
 236                         ),
 237                         $this->skin->link(
 238                                 $rc->getMovedToTitle(),
 239                                 null,
 240                                 array(),
 241                                 array(),
 242                                 array( 'known', 'noclasses' )
 243                         )
 244                 );
 245         }
 246
 247         public function insertDateHeader( &$s, $rc_timestamp ) {
 248                 global $wgLang;
 249                 # Make date header if necessary
 250                 $date = $wgLang->date( $rc_timestamp, true, true );
 251                 if( $date != $this->lastdate ) {
 252                         if( $this->lastdate != '' ) {
 253                                 $s .= "</ul>\n";
 254                         }
 255                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 256                         $this->lastdate = $date;
 257                         $this->rclistOpen = true;
 258                 }
 259         }
 260
 261         public function insertLog( &$s, $title, $logtype ) {
 262                 $logname = LogPage::logName( $logtype );
 263                 $s .= '(' . $this->skin->link(
 264                         $title,
 265                         $logname,
 266                         array(),
 267                         array(),
 268                         array( 'known', 'noclasses' )
 269                 ) . ')';
 270         }
 271
 272         /**
 273          * @param $s
 274          * @param $rc RecentChange
 275          * @param $unpatrolled
 276          * @return void
 277          */
 278         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 279                 # Diff link
 280                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 281                         $diffLink = $this->message['diff'];
 282                 } else if( !self::userCan($rc,Revision::DELETED_TEXT) ) {
 283                         $diffLink = $this->message['diff'];
 284                 } else {
 285                         $query = array(
 286                                 'curid' => $rc->mAttribs['rc_cur_id'],
 287                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 288                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 289                         );
 290
 291                         if( $unpatrolled ) {
 292                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 293                         };
 294
 295                         $diffLink = $this->skin->link(
 296                                 $rc->getTitle(),
 297                                 $this->message['diff'],
 298                                 array( 'tabindex' => $rc->counter ),
 299                                 $query,
 300                                 array( 'known', 'noclasses' )
 301                         );
 302                 }
 303                 $s .= '(' . $diffLink . $this->message['pipe-separator'];
 304                 # History link
 305                 $s .= $this->skin->link(
 306                         $rc->getTitle(),
 307                         $this->message['hist'],
 308                         array(),
 309                         array(
 310                                 'curid' => $rc->mAttribs['rc_cur_id'],
 311                                 'action' => 'history'
 312                         ),
 313                         array( 'known', 'noclasses' )
 314                 );
 315                 $s .= ') . . ';
 316         }
 317
 318         /**
 319          * @param $s
 320          * @param $rc RecentChange
 321          * @param $unpatrolled
 322          * @param $watched
 323          * @return void
 324          */
 325         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 326                 global $wgContLang;
 327                 # If it's a new article, there is no diff link, but if it hasn't been
 328                 # patrolled yet, we need to give users a way to do so
 329                 $params = array();
 330
 331                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 332                         $params['rcid'] = $rc->mAttribs['rc_id'];
 333                 }
 334
 335                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 336                         $articlelink = $this->skin->link(
 337                                 $rc->getTitle(),
 338                                 null,
 339                                 array(),
 340                                 $params,
 341                                 array( 'known', 'noclasses' )
 342                         );
 343                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 344                 } else {
 345                         $articlelink = ' '. $this->skin->link(
 346                                 $rc->getTitle(),
 347                                 null,
 348                                 array(),
 349                                 $params,
 350                                 array( 'known', 'noclasses' )
 351                         );
 352                 }
 353                 # Bolden pages watched by this user
 354                 if( $watched ) {
 355                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 356                 }
 357                 # RTL/LTR marker
 358                 $articlelink .= $wgContLang->getDirMark();
 359
 360                 wfRunHooks( 'ChangesListInsertArticleLink',
 361                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 362
 363                 $s .= " $articlelink";
 364         }
 365
 366         /**
 367          * @param $s
 368          * @param $rc RecentChange
 369          * @return void
 370          */
 371         public function insertTimestamp( &$s, $rc ) {
 372                 global $wgLang;
 373                 $s .= $this->message['semicolon-separator'] .
 374                         $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 375         }
 376
 377         /** Insert links to user page, user talk page and eventually a blocking link
 378          *
 379          * @param $rc RecentChange
 380          */
 381         public function insertUserRelatedLinks( &$s, &$rc ) {
 382                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 383                         $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 384                 } else {
 385                         $s .= $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 386                         $s .= $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 387                 }
 388         }
 389
 390         /** insert a formatted action
 391          *
 392          * @param $rc RecentChange
 393          */
 394         public function insertAction( &$s, &$rc ) {
 395                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 396                         if( $this->isDeleted( $rc, LogPage::DELETED_ACTION ) ) {
 397                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 398                         } else {
 399                                 $s .= ' '.LogPage::actionText( $rc->mAttribs['rc_log_type'], $rc->mAttribs['rc_log_action'],
 400                                         $rc->getTitle(), $this->skin, LogPage::extractParams( $rc->mAttribs['rc_params'] ), true, true );
 401                         }
 402                 }
 403         }
 404
 405         /** insert a formatted comment
 406          *
 407          * @param $rc RecentChange
 408          */
 409         public function insertComment( &$s, &$rc ) {
 410                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 411                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 412                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 413                         } else {
 414                                 $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 415                         }
 416                 }
 417         }
 418
 419         /**
 420          * Check whether to enable recent changes patrol features
 421          * @return Boolean
 422          */
 423         public static function usePatrol() {
 424                 global $wgUser;
 425                 return $wgUser->useRCPatrol();
 426         }
 427
 428         /**
 429          * Returns the string which indicates the number of watching users
 430          */
 431         protected function numberofWatchingusers( $count ) {
 432                 global $wgLang;
 433                 static $cache = array();
 434                 if( $count > 0 ) {
 435                         if( !isset( $cache[$count] ) ) {
 436                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 437                                         array('parsemag', 'escape' ), $wgLang->formatNum( $count ) );
 438                         }
 439                         return $cache[$count];
 440                 } else {
 441                         return '';
 442                 }
 443         }
 444
 445         /**
 446          * Determine if said field of a revision is hidden
 447          * @param $rc RCCacheEntry
 448          * @param $field Integer: one of DELETED_* bitfield constants
 449          * @return Boolean
 450          */
 451         public static function isDeleted( $rc, $field ) {
 452                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 453         }
 454
 455         /**
 456          * Determine if the current user is allowed to view a particular
 457          * field of this revision, if it's marked as deleted.
 458          * @param $rc RCCacheEntry
 459          * @param $field Integer
 460          * @return Boolean
 461          */
 462         public static function userCan( $rc, $field ) {
 463                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 464                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 465                 } else {
 466                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 467                 }
 468         }
 469
 470         protected function maybeWatchedLink( $link, $watched = false ) {
 471                 if( $watched ) {
 472                         return '<strong class="mw-watched">' . $link . '</strong>';
 473                 } else {
 474                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 475                 }
 476         }
 477
 478         /** Inserts a rollback link
 479          *
 480          * @param $s
 481          * @param $rc RecentChange
 482          */
 483         public function insertRollback( &$s, &$rc ) {
 484                 global $wgUser;
 485                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 486                         $page = $rc->getTitle();
 487                         /** Check for rollback and edit permissions, disallow special pages, and only
 488                           * show a link on the top-most revision */
 489                         if ($wgUser->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 490                         {
 491                                 $rev = new Revision( array(
 492                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 493                                         'user'      => $rc->mAttribs['rc_user'],
 494                                         'user_text' => $rc->mAttribs['rc_user_text'],
 495                                         'deleted'   => $rc->mAttribs['rc_deleted']
 496                                 ) );
 497                                 $rev->setTitle( $page );
 498                                 $s .= ' '.$this->skin->generateRollback( $rev );
 499                         }
 500                 }
 501         }
 502
 503         /**
 504          * @param $s
 505          * @param $rc RecentChange
 506          * @param $classes
 507          * @return
 508          */
 509         public function insertTags( &$s, &$rc, &$classes ) {
 510                 if ( empty($rc->mAttribs['ts_tags']) )
 511                         return;
 512
 513                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 514                 $classes = array_merge( $classes, $newClasses );
 515                 $s .= ' ' . $tagSummary;
 516         }
 517
 518         public function insertExtra( &$s, &$rc, &$classes ) {
 519                 ## Empty, used for subclassers to add anything special.
 520         }
 521 }
 522
 523
 524 /**
 525  * Generate a list of changes using the good old system (no javascript)
 526  */
 527 class OldChangesList extends ChangesList {
 528         /**
 529          * Format a line using the old system (aka without any javascript).
 530          *
 531          * @param $rc RecentChange
 532          */
 533         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 534                 global $wgLang, $wgRCShowChangedSize, $wgUser;
 535                 wfProfileIn( __METHOD__ );
 536                 # Should patrol-related stuff be shown?
 537                 $unpatrolled = $wgUser->useRCPatrol() && !$rc->mAttribs['rc_patrolled'];
 538
 539                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 540                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 541
 542                 $s = '';
 543                 $classes = array();
 544                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 545                 if( $linenumber ) {
 546                         if( $linenumber & 1 ) {
 547                                 $classes[] = 'mw-line-odd';
 548                         }
 549                         else {
 550                                 $classes[] = 'mw-line-even';
 551                         }
 552                 }
 553
 554                 // Moved pages
 555                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 556                         $this->insertMove( $s, $rc );
 557                 // Log entries
 558                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 559                         $logtitle = Title::newFromText( 'Log/'.$rc->mAttribs['rc_log_type'], NS_SPECIAL );
 560                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 561                 // Log entries (old format) or log targets, and special pages
 562                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 563                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 564                         if( $name == 'Log' ) {
 565                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 566                         }
 567                 // Regular entries
 568                 } else {
 569                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 570                         # M, N, b and ! (minor, new, bot and unpatrolled)
 571                         $s .= $this->recentChangesFlags(
 572                                 array(
 573                                         'newpage' => $rc->mAttribs['rc_new'],
 574                                         'minor' => $rc->mAttribs['rc_minor'],
 575                                         'unpatrolled' => $unpatrolled,
 576                                         'bot' => $rc->mAttribs['rc_bot']
 577                                 ),
 578                                 ''
 579                         );
 580                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 581                 }
 582                 # Edit/log timestamp
 583                 $this->insertTimestamp( $s, $rc );
 584                 # Bytes added or removed
 585                 if( $wgRCShowChangedSize ) {
 586                         $cd = $rc->getCharacterDifference();
 587                         if( $cd != '' ) {
 588                                 $s .= "$cd  . . ";
 589                         }
 590                 }
 591                 # User tool links
 592                 $this->insertUserRelatedLinks( $s, $rc );
 593                 # Log action text (if any)
 594                 $this->insertAction( $s, $rc );
 595                 # Edit or log comment
 596                 $this->insertComment( $s, $rc );
 597                 # Tags
 598                 $this->insertTags( $s, $rc, $classes );
 599                 # Rollback
 600                 $this->insertRollback( $s, $rc );
 601                 # For subclasses
 602                 $this->insertExtra( $s, $rc, $classes );
 603
 604                 # How many users watch this page
 605                 if( $rc->numberofWatchingusers > 0 ) {
 606                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 607                                 array( 'parsemag', 'escape' ), $wgLang->formatNum( $rc->numberofWatchingusers ) );
 608                 }
 609
 610                 if( $this->watchlist ) {
 611                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 612                 }
 613
 614                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 615
 616                 wfProfileOut( __METHOD__ );
 617                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 618         }
 619 }
 620
 621
 622 /**
 623  * Generate a list of changes using an Enhanced system (uses javascript).
 624  */
 625 class EnhancedChangesList extends ChangesList {
 626         /**
 627          * Add the JavaScript file for enhanced changeslist
 628          * @return String
 629          */
 630         public function beginRecentChangesList() {
 631                 global $wgOut;
 632                 $this->rc_cache = array();
 633                 $this->rcMoveIndex = 0;
 634                 $this->rcCacheIndex = 0;
 635                 $this->lastdate = '';
 636                 $this->rclistOpen = false;
 637                 $wgOut->addModuleStyles( 'mediawiki.special.changeslist' );
 638                 return '';
 639         }
 640         /**
 641          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 642          *
 643          * @param $baseRC RecentChange
 644          * @param $watched bool
 645          *
 646          * @return string
 647          */
 648         public function recentChangesLine( &$baseRC, $watched = false ) {
 649                 global $wgLang, $wgUser;
 650
 651                 wfProfileIn( __METHOD__ );
 652
 653                 # Create a specialised object
 654                 $rc = RCCacheEntry::newFromParent( $baseRC );
 655
 656                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 657
 658                 # If it's a new day, add the headline and flush the cache
 659                 $date = $wgLang->date( $rc->mAttribs['rc_timestamp'], true );
 660                 $ret = '';
 661                 if( $date != $this->lastdate ) {
 662                         # Process current cache
 663                         $ret = $this->recentChangesBlock();
 664                         $this->rc_cache = array();
 665                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 666                         $this->lastdate = $date;
 667                 }
 668
 669                 # Should patrol-related stuff be shown?
 670                 if( $wgUser->useRCPatrol() ) {
 671                         $rc->unpatrolled = !$rc->mAttribs['rc_patrolled'];
 672                 } else {
 673                         $rc->unpatrolled = false;
 674                 }
 675
 676                 $showdifflinks = true;
 677                 # Make article link
 678                 $type = $rc->mAttribs['rc_type'];
 679                 $logType = $rc->mAttribs['rc_log_type'];
 680                 // Page moves
 681                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 682                         $msg = ( $type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 683                         $clink = wfMsg( $msg, $this->skin->linkKnown( $rc->getTitle(), null,
 684                                 array(), array( 'redirect' => 'no' ) ),
 685                                 $this->skin->linkKnown( $rc->getMovedToTitle() ) );
 686                 // New unpatrolled pages
 687                 } else if( $rc->unpatrolled && $type == RC_NEW ) {
 688                         $clink = $this->skin->linkKnown( $rc->getTitle(), null, array(),
 689                                 array( 'rcid' => $rc->mAttribs['rc_id'] ) );
 690                 // Log entries
 691                 } else if( $type == RC_LOG ) {
 692                         if( $logType ) {
 693                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 694                                 $clink = '(' . $this->skin->linkKnown( $logtitle,
 695                                         LogPage::logName( $logType ) ) . ')';
 696                         } else {
 697                                 $clink = $this->skin->link( $rc->getTitle() );
 698                         }
 699                         $watched = false;
 700                 // Log entries (old format) and special pages
 701                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 702                         list( $specialName, $logtype ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 703                         if ( $specialName == 'Log' ) {
 704                                 # Log updates, etc
 705                                 $logname = LogPage::logName( $logtype );
 706                                 $clink = '(' . $this->skin->linkKnown( $rc->getTitle(), $logname ) . ')';
 707                         } else {
 708                                 wfDebug( "Unexpected special page in recentchanges\n" );
 709                                 $clink = '';
 710                         }
 711                 // Edits
 712                 } else {
 713                         $clink = $this->skin->linkKnown( $rc->getTitle() );
 714                 }
 715
 716                 # Don't show unusable diff links
 717                 if ( !ChangesList::userCan($rc,Revision::DELETED_TEXT) ) {
 718                         $showdifflinks = false;
 719                 }
 720
 721                 $time = $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true );
 722                 $rc->watched = $watched;
 723                 $rc->link = $clink;
 724                 $rc->timestamp = $time;
 725                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 726
 727                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 728                 # called too many times (50% of CPU time on RecentChanges!).
 729                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 730                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 731                 if( $rc->unpatrolled ) {
 732                         $rcIdQuery = array( 'rcid' => $rc->mAttribs['rc_id'] );
 733                 } else {
 734                         $rcIdQuery = array();
 735                 }
 736                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 737                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' =>
 738                         $lastOldid ) + $rcIdQuery;
 739
 740                 if( !$showdifflinks ) {
 741                         $curLink = $this->message['cur'];
 742                         $diffLink = $this->message['diff'];
 743                 } else if( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 744                         if ( $type != RC_NEW ) {
 745                                 $curLink = $this->message['cur'];
 746                         } else {
 747                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 748                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 749                         }
 750                         $diffLink = $this->message['diff'];
 751                 } else {
 752                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querydiff ) );
 753                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 754                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 755                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 756                 }
 757
 758                 # Make "last" link
 759                 if( !$showdifflinks || !$lastOldid ) {
 760                         $lastLink = $this->message['last'];
 761                 } else if( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 762                         $lastLink = $this->message['last'];
 763                 } else {
 764                         $lastLink = $this->skin->linkKnown( $rc->getTitle(), $this->message['last'],
 765                                 array(), $curIdEq + array('diff' => $thisOldid, 'oldid' => $lastOldid) + $rcIdQuery );
 766                 }
 767
 768                 # Make user links
 769                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 770                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 771                 } else {
 772                         $rc->userlink = $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 773                         $rc->usertalklink = $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 774                 }
 775
 776                 $rc->lastlink = $lastLink;
 777                 $rc->curlink  = $curLink;
 778                 $rc->difflink = $diffLink;
 779
 780                 # Put accumulated information into the cache, for later display
 781                 # Page moves go on their own line
 782                 $title = $rc->getTitle();
 783                 $secureName = $title->getPrefixedDBkey();
 784                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 785                         # Use an @ character to prevent collision with page names
 786                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 787                 } else {
 788                         # Logs are grouped by type
 789                         if( $type == RC_LOG ){
 790                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 791                         }
 792                         if( !isset( $this->rc_cache[$secureName] ) ) {
 793                                 $this->rc_cache[$secureName] = array();
 794                         }
 795
 796                         array_push( $this->rc_cache[$secureName], $rc );
 797                 }
 798
 799                 wfProfileOut( __METHOD__ );
 800
 801                 return $ret;
 802         }
 803
 804         /**
 805          * Enhanced RC group
 806          */
 807         protected function recentChangesBlockGroup( $block ) {
 808                 global $wgLang, $wgContLang, $wgRCShowChangedSize;
 809
 810                 wfProfileIn( __METHOD__ );
 811
 812                 # Add the namespace and title of the block as part of the class
 813                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 814                         # Log entry
 815                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 816                 } else {
 817                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 818                 }
 819                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 820                         Html::openElement( 'tr' );
 821
 822                 # Collate list of users
 823                 $userlinks = array();
 824                 # Other properties
 825                 $unpatrolled = false;
 826                 $isnew = false;
 827                 $curId = $currentRevision = 0;
 828                 # Some catalyst variables...
 829                 $namehidden = true;
 830                 $allLogs = true;
 831                 foreach( $block as $rcObj ) {
 832                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 833                         if( $rcObj->mAttribs['rc_new'] ) {
 834                                 $isnew = true;
 835                         }
 836                         // If all log actions to this page were hidden, then don't
 837                         // give the name of the affected page for this block!
 838                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 839                                 $namehidden = false;
 840                         }
 841                         $u = $rcObj->userlink;
 842                         if( !isset( $userlinks[$u] ) ) {
 843                                 $userlinks[$u] = 0;
 844                         }
 845                         if( $rcObj->unpatrolled ) {
 846                                 $unpatrolled = true;
 847                         }
 848                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 849                                 $allLogs = false;
 850                         }
 851                         # Get the latest entry with a page_id and oldid
 852                         # since logs may not have these.
 853                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 854                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 855                         }
 856                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 857                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 858                         }
 859
 860                         $bot = $rcObj->mAttribs['rc_bot'];
 861                         $userlinks[$u]++;
 862                 }
 863
 864                 # Sort the list and convert to text
 865                 krsort( $userlinks );
 866                 asort( $userlinks );
 867                 $users = array();
 868                 foreach( $userlinks as $userlink => $count) {
 869                         $text = $userlink;
 870                         $text .= $wgContLang->getDirMark();
 871                         if( $count > 1 ) {
 872                                 $text .= ' (' . $wgLang->formatNum( $count ) . '×)';
 873                         }
 874                         array_push( $users, $text );
 875                 }
 876
 877                 $users = ' <span class="changedby">[' .
 878                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 879
 880                 # Title for <a> tags
 881                 $expandTitle = htmlspecialchars( wfMsg( 'rc-enhanced-expand' ) );
 882                 $closeTitle = htmlspecialchars( wfMsg( 'rc-enhanced-hide' ) );
 883
 884                 $tl = "<span class='mw-collapsible-toggle'>"
 885                         . "<span class='mw-rc-openarrow'>"
 886                         . "<a href='#' title='$expandTitle'>{$this->sideArrow()}</a>"
 887                         . "</span><span class='mw-rc-closearrow'>"
 888                         . "<a href='#' title='$closeTitle'>{$this->downArrow()}</a>"
 889                         . "</span></span>";
 890                 $r .= "<td>$tl</td>";
 891
 892                 # Main line
 893                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 894                         'newpage' => $isnew,
 895                         'minor' => false,
 896                         'unpatrolled' => $unpatrolled,
 897                         'bot' => $bot ,
 898                 ) );
 899
 900                 # Timestamp
 901                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td>';
 902
 903                 # Article link
 904                 if( $namehidden ) {
 905                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 906                 } else if( $allLogs ) {
 907                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 908                 } else {
 909                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 910                 }
 911
 912                 $r .= $wgContLang->getDirMark();
 913
 914                 $queryParams['curid'] = $curId;
 915                 # Changes message
 916                 $n = count($block);
 917                 static $nchanges = array();
 918                 if ( !isset( $nchanges[$n] ) ) {
 919                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) );
 920                 }
 921                 # Total change link
 922                 $r .= ' ';
 923                 if( !$allLogs ) {
 924                         $r .= '(';
 925                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT ) ) {
 926                                 $r .= $nchanges[$n];
 927                         } else if( $isnew ) {
 928                                 $r .= $nchanges[$n];
 929                         } else {
 930                                 $params = $queryParams;
 931                                 $params['diff'] = $currentRevision;
 932                                 $params['oldid'] = $oldid;
 933
 934                                 $r .= $this->skin->link(
 935                                         $block[0]->getTitle(),
 936                                         $nchanges[$n],
 937                                         array(),
 938                                         $params,
 939                                         array( 'known', 'noclasses' )
 940                                 );
 941                         }
 942                 }
 943
 944                 # History
 945                 if( $allLogs ) {
 946                         // don't show history link for logs
 947                 } else if( $namehidden || !$block[0]->getTitle()->exists() ) {
 948                         $r .= $this->message['pipe-separator'] . $this->message['hist'] . ')';
 949                 } else {
 950                         $params = $queryParams;
 951                         $params['action'] = 'history';
 952
 953                         $r .= $this->message['pipe-separator'] .
 954                                 $this->skin->link(
 955                                         $block[0]->getTitle(),
 956                                         $this->message['hist'],
 957                                         array(),
 958                                         $params,
 959                                         array( 'known', 'noclasses' )
 960                                 ) . ')';
 961                 }
 962                 $r .= ' . . ';
 963
 964                 # Character difference (does not apply if only log items)
 965                 if( $wgRCShowChangedSize && !$allLogs ) {
 966                         $last = 0;
 967                         $first = count($block) - 1;
 968                         # Some events (like logs) have an "empty" size, so we need to skip those...
 969                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 970                                 $last++;
 971                         }
 972                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 973                                 $first--;
 974                         }
 975                         # Get net change
 976                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 977                                 $block[$last]->mAttribs['rc_new_len'] );
 978
 979                         if( $chardiff == '' ) {
 980                                 $r .= ' ';
 981                         } else {
 982                                 $r .= ' ' . $chardiff. ' . . ';
 983                         }
 984                 }
 985
 986                 $r .= $users;
 987                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 988
 989                 # Sub-entries
 990                 foreach( $block as $rcObj ) {
 991                         # Classes to apply -- TODO implement
 992                         $classes = array();
 993                         $type = $rcObj->mAttribs['rc_type'];
 994
 995                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 996                         $r .= '<tr><td></td><td class="mw-enhanced-rc">';
 997                         $r .= $this->recentChangesFlags( array(
 998                                 'newpage' => $rcObj->mAttribs['rc_new'],
 999                                 'minor' => $rcObj->mAttribs['rc_minor'],
1000                                 'unpatrolled' => $rcObj->unpatrolled,
1001                                 'bot' => $rcObj->mAttribs['rc_bot'],
1002                         ) );
1003                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
1004
1005                         $params = $queryParams;
1006
1007                         if( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
1008                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
1009                         }
1010
1011                         # Log timestamp
1012                         if( $type == RC_LOG ) {
1013                                 $link = $rcObj->timestamp;
1014                         # Revision link
1015                         } else if( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
1016                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
1017                         } else {
1018                                 if ( $rcObj->unpatrolled && $type == RC_NEW) {
1019                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
1020                                 }
1021
1022                                 $link = $this->skin->link(
1023                                                 $rcObj->getTitle(),
1024                                                 $rcObj->timestamp,
1025                                                 array(),
1026                                                 $params,
1027                                                 array( 'known', 'noclasses' )
1028                                         );
1029                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
1030                                         $link = '<span class="history-deleted">'.$link.'</span> ';
1031                         }
1032                         $r .= $link . '</span>';
1033
1034                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1035                                 $r .= ' (';
1036                                 $r .= $rcObj->curlink;
1037                                 $r .= $this->message['pipe-separator'];
1038                                 $r .= $rcObj->lastlink;
1039                                 $r .= ')';
1040                         }
1041                         $r .= ' . . ';
1042
1043                         # Character diff
1044                         if( $wgRCShowChangedSize && $rcObj->getCharacterDifference() ) {
1045                                 $r .= $rcObj->getCharacterDifference() . ' . . ' ;
1046                         }
1047
1048                         # User links
1049                         $r .= $rcObj->userlink;
1050                         $r .= $rcObj->usertalklink;
1051                         // log action
1052                         $this->insertAction( $r, $rcObj );
1053                         // log comment
1054                         $this->insertComment( $r, $rcObj );
1055                         # Rollback
1056                         $this->insertRollback( $r, $rcObj );
1057                         # Tags
1058                         $this->insertTags( $r, $rcObj, $classes );
1059
1060                         $r .= "</td></tr>\n";
1061                 }
1062                 $r .= "</table>\n";
1063
1064                 $this->rcCacheIndex++;
1065
1066                 wfProfileOut( __METHOD__ );
1067
1068                 return $r;
1069         }
1070
1071         /**
1072          * Generate HTML for an arrow or placeholder graphic
1073          * @param $dir String: one of '', 'd', 'l', 'r'
1074          * @param $alt String: text
1075          * @param $title String: text
1076          * @return String: HTML <img> tag
1077          */
1078         protected function arrow( $dir, $alt='', $title='' ) {
1079                 global $wgStylePath;
1080                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1081                 $encAlt = htmlspecialchars( $alt );
1082                 $encTitle = htmlspecialchars( $title );
1083                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1084         }
1085
1086         /**
1087          * Generate HTML for a right- or left-facing arrow,
1088          * depending on language direction.
1089          * @return String: HTML <img> tag
1090          */
1091         protected function sideArrow() {
1092                 global $wgContLang;
1093                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
1094                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1095         }
1096
1097         /**
1098          * Generate HTML for a down-facing arrow
1099          * depending on language direction.
1100          * @return String: HTML <img> tag
1101          */
1102         protected function downArrow() {
1103                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1104         }
1105
1106         /**
1107          * Generate HTML for a spacer image
1108          * @return String: HTML <img> tag
1109          */
1110         protected function spacerArrow() {
1111                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1112         }
1113
1114         /**
1115          * Enhanced RC ungrouped line.
1116          *
1117          * @param $rcObj RecentChange
1118          * @return String: a HTML formated line (generated using $r)
1119          */
1120         protected function recentChangesBlockLine( $rcObj ) {
1121                 global $wgRCShowChangedSize;
1122
1123                 wfProfileIn( __METHOD__ );
1124                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1125
1126                 $type = $rcObj->mAttribs['rc_type'];
1127                 $logType = $rcObj->mAttribs['rc_log_type'];
1128                 if( $logType ) {
1129                         # Log entry
1130                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1131                 } else {
1132                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1133                 }
1134                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1135                         Html::openElement( 'tr' );
1136
1137                 $r .= '<td class="mw-enhanced-rc">' . $this->spacerArrow();
1138                 # Flag and Timestamp
1139                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1140                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1141                 } else {
1142                         $r .= $this->recentChangesFlags( array(
1143                                 'newpage' => $type == RC_NEW,
1144                                 'mino' => $rcObj->mAttribs['rc_minor'],
1145                                 'unpatrolled' => $rcObj->unpatrolled,
1146                                 'bot' => $rcObj->mAttribs['rc_bot'],
1147                         ) );
1148                 }
1149                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td>';
1150                 # Article or log link
1151                 if( $logType ) {
1152                         $logtitle = Title::newFromText( "Log/$logType", NS_SPECIAL );
1153                         $logname = LogPage::logName( $logType );
1154                         $r .= '(' . $this->skin->link(
1155                                 $logtitle,
1156                                 $logname,
1157                                 array(),
1158                                 array(),
1159                                 array( 'known', 'noclasses' )
1160                         ) . ')';
1161                 } else {
1162                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1163                 }
1164                 # Diff and hist links
1165                 if ( $type != RC_LOG ) {
1166                         $r .= ' ('. $rcObj->difflink . $this->message['pipe-separator'];
1167                         $query['action'] = 'history';
1168                         $r .= $this->skin->link(
1169                                 $rcObj->getTitle(),
1170                                 $this->message['hist'],
1171                                 array(),
1172                                 $query,
1173                                 array( 'known', 'noclasses' )
1174                         ) . ')';
1175                 }
1176                 $r .= ' . . ';
1177                 # Character diff
1178                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1179                         $r .= "$cd . . ";
1180                 }
1181                 # User/talk
1182                 $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1183                 # Log action (if any)
1184                 if( $logType ) {
1185                         if( $this->isDeleted($rcObj,LogPage::DELETED_ACTION) ) {
1186                                 $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
1187                         } else {
1188                                 $r .= ' ' . LogPage::actionText( $logType, $rcObj->mAttribs['rc_log_action'], $rcObj->getTitle(),
1189                                         $this->skin, LogPage::extractParams( $rcObj->mAttribs['rc_params'] ), true, true );
1190                         }
1191                 }
1192                 $this->insertComment( $r, $rcObj );
1193                 $this->insertRollback( $r, $rcObj );
1194                 # Tags
1195                 $classes = explode( ' ', $classes );
1196                 $this->insertTags( $r, $rcObj, $classes );
1197                 # Show how many people are watching this if enabled
1198                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1199
1200                 $r .= "</td></tr></table>\n";
1201
1202                 wfProfileOut( __METHOD__ );
1203
1204                 return $r;
1205         }
1206
1207         /**
1208          * If enhanced RC is in use, this function takes the previously cached
1209          * RC lines, arranges them, and outputs the HTML
1210          *
1211          * @return string
1212          */
1213         protected function recentChangesBlock() {
1214                 if( count ( $this->rc_cache ) == 0 ) {
1215                         return '';
1216                 }
1217
1218                 wfProfileIn( __METHOD__ );
1219
1220                 $blockOut = '';
1221                 foreach( $this->rc_cache as $block ) {
1222                         if( count( $block ) < 2 ) {
1223                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1224                         } else {
1225                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1226                         }
1227                 }
1228
1229                 wfProfileOut( __METHOD__ );
1230
1231                 return '<div>'.$blockOut.'</div>';
1232         }
1233
1234         /**
1235          * Returns text for the end of RC
1236          * If enhanced RC is in use, returns pretty much all the text
1237          */
1238         public function endRecentChangesList() {
1239                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1240         }
1241
1242 }