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