includes/ChangesList.php

   1 <?php
   2
   3 /**
   4  * @todo document
   5  */
   6 class RCCacheEntry extends RecentChange {
   7         var $secureName, $link;
   8         var $curlink , $difflink, $lastlink, $usertalklink, $versionlink;
   9         var $userlink, $timestamp, $watched;
  10
  11         static function newFromParent( $rc ) {
  12                 $rc2 = new RCCacheEntry;
  13                 $rc2->mAttribs = $rc->mAttribs;
  14                 $rc2->mExtra = $rc->mExtra;
  15                 return $rc2;
  16         }
  17 }
  18
  19 /**
  20  * Class to show various lists of changes:
  21  * - what links here
  22  * - related changes
  23  * - recent changes
  24  */
  25 class ChangesList {
  26         # Called by history lists and recent changes
  27         public $skin;
  28         protected $watchlist = false;
  29
  30         /**
  31         * Changeslist contructor
  32         * @param $skin Skin
  33         */
  34         public function __construct( $skin ) {
  35                 $this->skin = $skin;
  36                 $this->preCacheMessages();
  37         }
  38
  39         /**
  40          * Fetch an appropriate changes list class for the specified user
  41          * Some users might want to use an enhanced list format, for instance
  42          *
  43          * @param $user User to fetch the list class for
  44          * @return ChangesList derivative
  45          */
  46         public static function newFromUser( &$user ) {
  47                 $sk = $user->getSkin();
  48                 $list = null;
  49                 if( wfRunHooks( 'FetchChangesList', array( &$user, &$sk, &$list ) ) ) {
  50                         return $user->getOption( 'usenewrc' ) ?
  51                                 new EnhancedChangesList( $sk ) : new OldChangesList( $sk );
  52                 } else {
  53                         return $list;
  54                 }
  55         }
  56
  57         /**
  58          * Sets the list to use a <li class="watchlist-(namespace)-(page)"> tag
  59          * @param $value Boolean
  60          */
  61         public function setWatchlistDivs( $value = true ) {
  62                 $this->watchlist = $value;
  63         }
  64
  65         /**
  66          * As we use the same small set of messages in various methods and that
  67          * they are called often, we call them once and save them in $this->message
  68          */
  69         private function preCacheMessages() {
  70                 if( !isset( $this->message ) ) {
  71                         foreach ( explode( ' ', 'cur diff hist last blocklink history ' .
  72                         'semicolon-separator pipe-separator' ) as $msg ) {
  73                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
  74                         }
  75                 }
  76         }
  77
  78
  79         /**
  80          * Returns the appropriate flags for new page, minor change and patrolling
  81          * @param $new Boolean
  82          * @param $minor Boolean
  83          * @param $patrolled Boolean
  84          * @param $nothing String to use for empty space
  85          * @param $bot Boolean
  86          * @return String
  87          */
  88         protected function recentChangesFlags( $new, $minor, $patrolled, $nothing = '&nbsp;', $bot = false ) {
  89                 $f = $new ? self::flag( 'newpage' ) : $nothing;
  90                 $f .= $minor ? self::flag( 'minor' ) : $nothing;
  91                 $f .= $bot ? self::flag( 'bot' ) : $nothing;
  92                 $f .= $patrolled ? self::flag( 'unpatrolled' ) : $nothing;
  93                 return $f;
  94         }
  95
  96         /**
  97          * Provide the <abbr> element appropriate to a given abbreviated flag,
  98          * namely the flag indicating a new page, a minor edit, a bot edit, or an
  99          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 100          * "!" respectively, plus it will have an appropriate title and class.
 101          *
 102          * @param $key String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 103          * @return String: Raw HTML
 104          */
 105         public static function flag( $key ) {
 106                 static $messages = null;
 107                 if ( is_null( $messages ) ) {
 108                         foreach ( explode( ' ', 'minoreditletter boteditletter newpageletter ' .
 109                         'unpatrolledletter recentchanges-label-minor recentchanges-label-bot ' .
 110                         'recentchanges-label-newpage recentchanges-label-unpatrolled' ) as $msg ) {
 111                                 $messages[$msg] = wfMsgExt( $msg, 'escapenoentities' );
 112                         }
 113                 }
 114                 # Inconsistent naming, bleh
 115                 if ( $key == 'newpage' || $key == 'unpatrolled' ) {
 116                         $key2 = $key;
 117                 } else {
 118                         $key2 = $key . 'edit';
 119                 }
 120                 return "<abbr class=\"$key\" title=\""
 121                         . $messages["recentchanges-label-$key"] . "\">"
 122                         . $messages["${key2}letter"]
 123                         . '</abbr>';
 124         }
 125
 126         /**
 127          * Some explanatory wrapper text for the given flag, to be used in a legend
 128          * explaining what the flags mean.  For instance, "N - new page".  See
 129          * also flag().
 130          *
 131          * @param $key String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 132          * @return String: Raw HTML
 133          */
 134         private static function flagLine( $key ) {
 135                 return wfMsgExt( "recentchanges-legend-$key", array( 'escapenoentities',
 136                         'replaceafter' ), self::flag( $key ) );
 137         }
 138
 139         /**
 140          * A handy legend to tell users what the little "m", "b", and so on mean.
 141          *
 142          * @return String: Raw HTML
 143          */
 144         public static function flagLegend() {
 145                 global $wgGroupPermissions, $wgLang;
 146
 147                 $flags = array( self::flagLine( 'newpage' ),
 148                         self::flagLine( 'minor' ) );
 149
 150                 # Don't show info on bot edits unless there's a bot group of some kind
 151                 foreach ( $wgGroupPermissions as $rights ) {
 152                         if ( isset( $rights['bot'] ) && $rights['bot'] ) {
 153                                 $flags[] = self::flagLine( 'bot' );
 154                                 break;
 155                         }
 156                 }
 157
 158                 if ( self::usePatrol() ) {
 159                         $flags[] = self::flagLine( 'unpatrolled' );
 160                 }
 161
 162                 return '<div class="mw-rc-label-legend">' .
 163                         wfMsgExt( 'recentchanges-label-legend', 'parseinline',
 164                         $wgLang->commaList( $flags ) ) . '</div>';
 165         }
 166
 167         /**
 168          * Returns text for the start of the tabular part of RC
 169          * @return String
 170          */
 171         public function beginRecentChangesList() {
 172                 $this->rc_cache = array();
 173                 $this->rcMoveIndex = 0;
 174                 $this->rcCacheIndex = 0;
 175                 $this->lastdate = '';
 176                 $this->rclistOpen = false;
 177                 return '';
 178         }
 179
 180         /**
 181          * Show formatted char difference
 182          * @param $old Integer: bytes
 183          * @param $new Integer: bytes
 184          * @returns String
 185          */
 186         public static function showCharacterDifference( $old, $new ) {
 187                 global $wgRCChangedSizeThreshold, $wgLang, $wgMiserMode;
 188                 $szdiff = $new - $old;
 189
 190                 $code = $wgLang->getCode();
 191                 static $fastCharDiff = array();
 192                 if ( !isset($fastCharDiff[$code]) ) {
 193                         $fastCharDiff[$code] = $wgMiserMode || wfMsgNoTrans( 'rc-change-size' ) === '$1';
 194                 }
 195
 196                 $formatedSize = $wgLang->formatNum($szdiff);
 197
 198                 if ( !$fastCharDiff[$code] ) {
 199                         $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape' ), $formatedSize );
 200                 }
 201
 202                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 203                         $tag = 'strong';
 204                 } else {
 205                     $tag = 'span';
 206                 }
 207                 if( $szdiff === 0 ) {
 208                         return "<$tag class='mw-plusminus-null'>($formatedSize)</$tag>";
 209                 } elseif( $szdiff > 0 ) {
 210                         return "<$tag class='mw-plusminus-pos'>(+$formatedSize)</$tag>";
 211             } else {
 212                         return "<$tag class='mw-plusminus-neg'>($formatedSize)</$tag>";
 213                 }
 214         }
 215
 216         /**
 217          * Returns text for the end of RC
 218          * @return String
 219          */
 220         public function endRecentChangesList() {
 221                 if( $this->rclistOpen ) {
 222                         return "</ul>\n";
 223                 } else {
 224                         return '';
 225                 }
 226         }
 227
 228         public function insertMove( &$s, $rc ) {
 229                 # Diff
 230                 $s .= '(' . $this->message['diff'] . ') (';
 231                 # Hist
 232                 $s .= $this->skin->link(
 233                         $rc->getMovedToTitle(),
 234                         $this->message['hist'],
 235                         array(),
 236                         array( 'action' => 'history' ),
 237                         array( 'known', 'noclasses' )
 238                 ) . ') . . ';
 239                 # "[[x]] moved to [[y]]"
 240                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 241                 $s .= wfMsg(
 242                         $msg,
 243                         $this->skin->link(
 244                                 $rc->getTitle(),
 245                                 null,
 246                                 array(),
 247                                 array( 'redirect' => 'no' ),
 248                                 array( 'known', 'noclasses' )
 249                         ),
 250                         $this->skin->link(
 251                                 $rc->getMovedToTitle(),
 252                                 null,
 253                                 array(),
 254                                 array(),
 255                                 array( 'known', 'noclasses' )
 256                         )
 257                 );
 258         }
 259
 260         public function insertDateHeader( &$s, $rc_timestamp ) {
 261                 global $wgLang;
 262                 # Make date header if necessary
 263                 $date = $wgLang->date( $rc_timestamp, true, true );
 264                 if( $date != $this->lastdate ) {
 265                         if( $this->lastdate != '' ) {
 266                                 $s .= "</ul>\n";
 267                         }
 268                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 269                         $this->lastdate = $date;
 270                         $this->rclistOpen = true;
 271                 }
 272         }
 273
 274         public function insertLog( &$s, $title, $logtype ) {
 275                 $logname = LogPage::logName( $logtype );
 276                 $s .= '(' . $this->skin->link(
 277                         $title,
 278                         $logname,
 279                         array(),
 280                         array(),
 281                         array( 'known', 'noclasses' )
 282                 ) . ')';
 283         }
 284
 285         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 286                 # Diff link
 287                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 288                         $diffLink = $this->message['diff'];
 289                 } else if( !self::userCan($rc,Revision::DELETED_TEXT) ) {
 290                         $diffLink = $this->message['diff'];
 291                 } else {
 292                         $query = array(
 293                                 'curid' => $rc->mAttribs['rc_cur_id'],
 294                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 295                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 296                         );
 297
 298                         if( $unpatrolled ) {
 299                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 300                         };
 301
 302                         $diffLink = $this->skin->link(
 303                                 $rc->getTitle(),
 304                                 $this->message['diff'],
 305                                 array( 'tabindex' => $rc->counter ),
 306                                 $query,
 307                                 array( 'known', 'noclasses' )
 308                         );
 309                 }
 310                 $s .= '(' . $diffLink . $this->message['pipe-separator'];
 311                 # History link
 312                 $s .= $this->skin->link(
 313                         $rc->getTitle(),
 314                         $this->message['hist'],
 315                         array(),
 316                         array(
 317                                 'curid' => $rc->mAttribs['rc_cur_id'],
 318                                 'action' => 'history'
 319                         ),
 320                         array( 'known', 'noclasses' )
 321                 );
 322                 $s .= ') . . ';
 323         }
 324
 325         public function insertArticleLink( &$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 .= " $articlelink";
 364         }
 365
 366         public function insertTimestamp( &$s, $rc ) {
 367                 global $wgLang;
 368                 $s .= $this->message['semicolon-separator'] .
 369                         $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 370         }
 371
 372         /** Insert links to user page, user talk page and eventually a blocking link */
 373         public function insertUserRelatedLinks( &$s, &$rc ) {
 374                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 375                    $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 376                 } else {
 377                   $s .= $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 378                   $s .= $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 379                 }
 380         }
 381
 382         /** insert a formatted action */
 383         public function insertAction( &$s, &$rc ) {
 384                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 385                         if( $this->isDeleted( $rc, LogPage::DELETED_ACTION ) ) {
 386                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 387                         } else {
 388                                 $s .= ' '.LogPage::actionText( $rc->mAttribs['rc_log_type'], $rc->mAttribs['rc_log_action'],
 389                                         $rc->getTitle(), $this->skin, LogPage::extractParams( $rc->mAttribs['rc_params'] ), true, true );
 390                         }
 391                 }
 392         }
 393
 394         /** insert a formatted comment */
 395         public function insertComment( &$s, &$rc ) {
 396                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 397                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 398                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 399                         } else {
 400                                 $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 401                         }
 402                 }
 403         }
 404
 405         /**
 406          * Check whether to enable recent changes patrol features
 407          * @return Boolean
 408          */
 409         public static function usePatrol() {
 410                 global $wgUser;
 411                 return $wgUser->useRCPatrol();
 412         }
 413
 414         /**
 415          * Returns the string which indicates the number of watching users
 416          */
 417         protected function numberofWatchingusers( $count ) {
 418                 global $wgLang;
 419                 static $cache = array();
 420                 if( $count > 0 ) {
 421                         if( !isset( $cache[$count] ) ) {
 422                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 423                                         array('parsemag', 'escape' ), $wgLang->formatNum( $count ) );
 424                         }
 425                         return $cache[$count];
 426                 } else {
 427                         return '';
 428                 }
 429         }
 430
 431         /**
 432          * Determine if said field of a revision is hidden
 433          * @param $rc RCCacheEntry
 434          * @param $field Integer: one of DELETED_* bitfield constants
 435          * @return Boolean
 436          */
 437         public static function isDeleted( $rc, $field ) {
 438                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 439         }
 440
 441         /**
 442          * Determine if the current user is allowed to view a particular
 443          * field of this revision, if it's marked as deleted.
 444          * @param $rc RCCacheEntry
 445          * @param $field Integer
 446          * @return Boolean
 447          */
 448         public static function userCan( $rc, $field ) {
 449                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 450                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 451                 } else {
 452                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 453                 }
 454         }
 455
 456         protected function maybeWatchedLink( $link, $watched = false ) {
 457                 if( $watched ) {
 458                         return '<strong class="mw-watched">' . $link . '</strong>';
 459                 } else {
 460                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 461                 }
 462         }
 463
 464         /** Inserts a rollback link */
 465         public function insertRollback( &$s, &$rc ) {
 466                 global $wgUser;
 467                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 468                         $page = $rc->getTitle();
 469                         /** Check for rollback and edit permissions, disallow special pages, and only
 470                           * show a link on the top-most revision */
 471                         if ($wgUser->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 472                         {
 473                                 $rev = new Revision( array(
 474                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 475                                         'user'      => $rc->mAttribs['rc_user'],
 476                                         'user_text' => $rc->mAttribs['rc_user_text'],
 477                                         'deleted'   => $rc->mAttribs['rc_deleted']
 478                                 ) );
 479                                 $rev->setTitle( $page );
 480                                 $s .= ' '.$this->skin->generateRollback( $rev );
 481                         }
 482                 }
 483         }
 484
 485         public function insertTags( &$s, &$rc, &$classes ) {
 486                 if ( empty($rc->mAttribs['ts_tags']) )
 487                         return;
 488
 489                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 490                 $classes = array_merge( $classes, $newClasses );
 491                 $s .= ' ' . $tagSummary;
 492         }
 493
 494         public function insertExtra( &$s, &$rc, &$classes ) {
 495                 ## Empty, used for subclassers to add anything special.
 496         }
 497 }
 498
 499
 500 /**
 501  * Generate a list of changes using the good old system (no javascript)
 502  */
 503 class OldChangesList extends ChangesList {
 504         /**
 505          * Format a line using the old system (aka without any javascript).
 506          */
 507         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 508                 global $wgLang, $wgRCShowChangedSize, $wgUser;
 509                 wfProfileIn( __METHOD__ );
 510                 # Should patrol-related stuff be shown?
 511                 $unpatrolled = $wgUser->useRCPatrol() && !$rc->mAttribs['rc_patrolled'];
 512
 513                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 514                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 515
 516                 $s = '';
 517                 $classes = array();
 518                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 519                 if( $linenumber ) {
 520                         if( $linenumber & 1 ) {
 521                                 $classes[] = 'mw-line-odd';
 522                         }
 523                         else {
 524                                 $classes[] = 'mw-line-even';
 525                         }
 526                 }
 527
 528                 // Moved pages
 529                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 530                         $this->insertMove( $s, $rc );
 531                 // Log entries
 532                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 533                         $logtitle = Title::newFromText( 'Log/'.$rc->mAttribs['rc_log_type'], NS_SPECIAL );
 534                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 535                 // Log entries (old format) or log targets, and special pages
 536                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 537                         list( $name, $subpage ) = SpecialPage::resolveAliasWithSubpage( $rc->mAttribs['rc_title'] );
 538                         if( $name == 'Log' ) {
 539                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 540                         }
 541                 // Regular entries
 542                 } else {
 543                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 544                         # M, N, b and ! (minor, new, bot and unpatrolled)
 545                         $s .= $this->recentChangesFlags( $rc->mAttribs['rc_new'], $rc->mAttribs['rc_minor'],
 546                                 $unpatrolled, '', $rc->mAttribs['rc_bot'] );
 547                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 548                 }
 549                 # Edit/log timestamp
 550                 $this->insertTimestamp( $s, $rc );
 551                 # Bytes added or removed
 552                 if( $wgRCShowChangedSize ) {
 553                         $cd = $rc->getCharacterDifference();
 554                         if( $cd != '' ) {
 555                                 $s .= "$cd  . . ";
 556                         }
 557                 }
 558                 # User tool links
 559                 $this->insertUserRelatedLinks( $s, $rc );
 560                 # Log action text (if any)
 561                 $this->insertAction( $s, $rc );
 562                 # Edit or log comment
 563                 $this->insertComment( $s, $rc );
 564                 # Tags
 565                 $this->insertTags( $s, $rc, $classes );
 566                 # Rollback
 567                 $this->insertRollback( $s, $rc );
 568                 # For subclasses
 569                 $this->insertExtra( $s, $rc, $classes );
 570
 571                 # How many users watch this page
 572                 if( $rc->numberofWatchingusers > 0 ) {
 573                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 574                                 array( 'parsemag', 'escape' ), $wgLang->formatNum( $rc->numberofWatchingusers ) );
 575                 }
 576
 577                 if( $this->watchlist ) {
 578                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 579                 }
 580
 581                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 582
 583                 wfProfileOut( __METHOD__ );
 584                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 585         }
 586 }
 587
 588
 589 /**
 590  * Generate a list of changes using an Enhanced system (uses javascript).
 591  */
 592 class EnhancedChangesList extends ChangesList {
 593         /**
 594          * Add the JavaScript file for enhanced changeslist
 595          * @return String
 596          */
 597         public function beginRecentChangesList() {
 598                 global $wgStylePath, $wgStyleVersion;
 599                 $this->rc_cache = array();
 600                 $this->rcMoveIndex = 0;
 601                 $this->rcCacheIndex = 0;
 602                 $this->lastdate = '';
 603                 $this->rclistOpen = false;
 604                 $script = Html::linkedScript( $wgStylePath . "/common/enhancedchanges.js?$wgStyleVersion" );
 605                 return $script;
 606         }
 607         /**
 608          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 609          */
 610         public function recentChangesLine( &$baseRC, $watched = false ) {
 611                 global $wgLang, $wgUser;
 612
 613                 wfProfileIn( __METHOD__ );
 614
 615                 # Create a specialised object
 616                 $rc = RCCacheEntry::newFromParent( $baseRC );
 617
 618                 # Extract fields from DB into the function scope (rc_xxxx variables)
 619                 // FIXME: Would be good to replace this extract() call with something
 620                 // that explicitly initializes variables.
 621                 extract( $rc->mAttribs );
 622                 $curIdEq = array( 'curid' => $rc_cur_id );
 623
 624                 # If it's a new day, add the headline and flush the cache
 625                 $date = $wgLang->date( $rc_timestamp, true );
 626                 $ret = '';
 627                 if( $date != $this->lastdate ) {
 628                         # Process current cache
 629                         $ret = $this->recentChangesBlock();
 630                         $this->rc_cache = array();
 631                         $ret .= Xml::element( 'h4', null, $date );
 632                         $this->lastdate = $date;
 633                 }
 634
 635                 # Should patrol-related stuff be shown?
 636                 if( $wgUser->useRCPatrol() ) {
 637                         $rc->unpatrolled = !$rc_patrolled;
 638                 } else {
 639                         $rc->unpatrolled = false;
 640                 }
 641
 642                 $showdifflinks = true;
 643                 # Make article link
 644                 // Page moves
 645                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 646                         $msg = ( $rc_type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 647                         $clink = wfMsg( $msg, $this->skin->linkKnown( $rc->getTitle(), null,
 648                                 array(), array( 'redirect' => 'no' ) ),
 649                                 $this->skin->linkKnown( $rc->getMovedToTitle() ) );
 650                 // New unpatrolled pages
 651                 } else if( $rc->unpatrolled && $rc_type == RC_NEW ) {
 652                         $clink = $this->skin->linkKnown( $rc->getTitle(), null, array(),
 653                                 array( 'rcid' => $rc_id ) );
 654                 // Log entries
 655                 } else if( $rc_type == RC_LOG ) {
 656                         if( $rc_log_type ) {
 657                                 $logtitle = SpecialPage::getTitleFor( 'Log', $rc_log_type );
 658                                 $clink = '(' . $this->skin->linkKnown( $logtitle,
 659                                         LogPage::logName($rc_log_type) ) . ')';
 660                         } else {
 661                                 $clink = $this->skin->link( $rc->getTitle() );
 662                         }
 663                         $watched = false;
 664                 // Log entries (old format) and special pages
 665                 } elseif( $rc_namespace == NS_SPECIAL ) {
 666                         list( $specialName, $logtype ) = SpecialPage::resolveAliasWithSubpage( $rc_title );
 667                         if ( $specialName == 'Log' ) {
 668                                 # Log updates, etc
 669                                 $logname = LogPage::logName( $logtype );
 670                                 $clink = '(' . $this->skin->linkKnown( $rc->getTitle(), $logname ) . ')';
 671                         } else {
 672                                 wfDebug( "Unexpected special page in recentchanges\n" );
 673                                 $clink = '';
 674                         }
 675                 // Edits
 676                 } else {
 677                         $clink = $this->skin->linkKnown( $rc->getTitle() );
 678                 }
 679
 680                 # Don't show unusable diff links
 681                 if ( !ChangesList::userCan($rc,Revision::DELETED_TEXT) ) {
 682                         $showdifflinks = false;
 683                 }
 684
 685                 $time = $wgLang->time( $rc_timestamp, true, true );
 686                 $rc->watched = $watched;
 687                 $rc->link = $clink;
 688                 $rc->timestamp = $time;
 689                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 690
 691                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 692                 # called too many times (50% of CPU time on RecentChanges!).
 693                 if( $rc->unpatrolled ) {
 694                         $rcIdQuery = array( 'rcid' => $rc_id );
 695                 } else {
 696                         $rcIdQuery = array();
 697                 }
 698                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $rc_this_oldid );
 699                 $querydiff = $curIdEq + array( 'diff' => $rc_this_oldid, 'oldid' =>
 700                         $rc_last_oldid ) + $rcIdQuery;
 701
 702                 if( !$showdifflinks ) {
 703                         $curLink = $this->message['cur'];
 704                         $diffLink = $this->message['diff'];
 705                 } else if( in_array( $rc_type, array(RC_NEW,RC_LOG,RC_MOVE,RC_MOVE_OVER_REDIRECT) ) ) {
 706                         if ( $rc_type != RC_NEW ) {
 707                                 $curLink = $this->message['cur'];
 708                         } else {
 709                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 710                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 711                         }
 712                         $diffLink = $this->message['diff'];
 713                 } else {
 714                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querydiff ) );
 715                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 716                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 717                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 718                 }
 719
 720                 # Make "last" link
 721                 if( !$showdifflinks || !$rc_last_oldid ) {
 722                         $lastLink = $this->message['last'];
 723                 } else if( $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 724                         $lastLink = $this->message['last'];
 725                 } else {
 726                         $lastLink = $this->skin->linkKnown( $rc->getTitle(), $this->message['last'],
 727                                 array(), $curIdEq + array('diff' => $rc_this_oldid, 'oldid' => $rc_last_oldid) + $rcIdQuery );
 728                 }
 729
 730                 # Make user links
 731                 if( $this->isDeleted($rc,Revision::DELETED_USER) ) {
 732                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 733                 } else {
 734                         $rc->userlink = $this->skin->userLink( $rc_user, $rc_user_text );
 735                         $rc->usertalklink = $this->skin->userToolLinks( $rc_user, $rc_user_text );
 736                 }
 737
 738                 $rc->lastlink = $lastLink;
 739                 $rc->curlink  = $curLink;
 740                 $rc->difflink = $diffLink;
 741
 742                 # Put accumulated information into the cache, for later display
 743                 # Page moves go on their own line
 744                 $title = $rc->getTitle();
 745                 $secureName = $title->getPrefixedDBkey();
 746                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 747                         # Use an @ character to prevent collision with page names
 748                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 749                 } else {
 750                         # Logs are grouped by type
 751                         if( $rc_type == RC_LOG ){
 752                                 $secureName = SpecialPage::getTitleFor( 'Log', $rc_log_type )->getPrefixedDBkey();
 753                         }
 754                         if( !isset( $this->rc_cache[$secureName] ) ) {
 755                                 $this->rc_cache[$secureName] = array();
 756                         }
 757
 758                         array_push( $this->rc_cache[$secureName], $rc );
 759                 }
 760
 761                 wfProfileOut( __METHOD__ );
 762
 763                 return $ret;
 764         }
 765
 766         /**
 767          * Enhanced RC group
 768          */
 769         protected function recentChangesBlockGroup( $block ) {
 770                 global $wgLang, $wgContLang, $wgRCShowChangedSize;
 771
 772                 wfProfileIn( __METHOD__ );
 773
 774                 $r = '<table class="mw-enhanced-rc"><tr>';
 775
 776                 # Collate list of users
 777                 $userlinks = array();
 778                 # Other properties
 779                 $unpatrolled = false;
 780                 $isnew = false;
 781                 $curId = $currentRevision = 0;
 782                 # Some catalyst variables...
 783                 $namehidden = true;
 784                 $allLogs = true;
 785                 foreach( $block as $rcObj ) {
 786                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 787                         if( $rcObj->mAttribs['rc_new'] ) {
 788                                 $isnew = true;
 789                         }
 790                         // If all log actions to this page were hidden, then don't
 791                         // give the name of the affected page for this block!
 792                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 793                                 $namehidden = false;
 794                         }
 795                         $u = $rcObj->userlink;
 796                         if( !isset( $userlinks[$u] ) ) {
 797                                 $userlinks[$u] = 0;
 798                         }
 799                         if( $rcObj->unpatrolled ) {
 800                                 $unpatrolled = true;
 801                         }
 802                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 803                                 $allLogs = false;
 804                         }
 805                         # Get the latest entry with a page_id and oldid
 806                         # since logs may not have these.
 807                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 808                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 809                         }
 810                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 811                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 812                         }
 813
 814                         $bot = $rcObj->mAttribs['rc_bot'];
 815                         $userlinks[$u]++;
 816                 }
 817
 818                 # Sort the list and convert to text
 819                 krsort( $userlinks );
 820                 asort( $userlinks );
 821                 $users = array();
 822                 foreach( $userlinks as $userlink => $count) {
 823                         $text = $userlink;
 824                         $text .= $wgContLang->getDirMark();
 825                         if( $count > 1 ) {
 826                                 $text .= ' (' . $wgLang->formatNum( $count ) . '×)';
 827                         }
 828                         array_push( $users, $text );
 829                 }
 830
 831                 $users = ' <span class="changedby">[' .
 832                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 833
 834                 # ID for JS visibility toggle
 835                 $jsid = $this->rcCacheIndex;
 836                 # onclick handler to toggle hidden/expanded
 837                 $toggleLink = "onclick='toggleVisibility($jsid); return false'";
 838                 # Title for <a> tags
 839                 $expandTitle = htmlspecialchars( wfMsg( 'rc-enhanced-expand' ) );
 840                 $closeTitle = htmlspecialchars( wfMsg( 'rc-enhanced-hide' ) );
 841
 842                 $tl = "<span id='mw-rc-openarrow-$jsid' class='mw-changeslist-expanded' style='visibility:hidden'><a href='#' $toggleLink title='$expandTitle'>" . $this->sideArrow() . "</a></span>";
 843                 $tl .= "<span id='mw-rc-closearrow-$jsid' class='mw-changeslist-hidden' style='display:none'><a href='#' $toggleLink title='$closeTitle'>" . $this->downArrow() . "</a></span>";
 844                 $r .= '<td class="mw-enhanced-rc">'.$tl.'&nbsp;';
 845
 846                 # Main line
 847                 $r .= $this->recentChangesFlags( $isnew, false, $unpatrolled, '&nbsp;', $bot );
 848
 849                 # Timestamp
 850                 $r .= '&nbsp;'.$block[0]->timestamp.'&nbsp;</td><td style="padding:0px;">';
 851
 852                 # Article link
 853                 if( $namehidden ) {
 854                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 855                 } else if( $allLogs ) {
 856                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 857                 } else {
 858                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 859                 }
 860
 861                 $r .= $wgContLang->getDirMark();
 862
 863                 $queryParams['curid'] = $curId;
 864                 # Changes message
 865                 $n = count($block);
 866                 static $nchanges = array();
 867                 if ( !isset( $nchanges[$n] ) ) {
 868                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) );
 869                 }
 870                 # Total change link
 871                 $r .= ' ';
 872                 if( !$allLogs ) {
 873                         $r .= '(';
 874                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT ) ) {
 875                                 $r .= $nchanges[$n];
 876                         } else if( $isnew ) {
 877                                 $r .= $nchanges[$n];
 878                         } else {
 879                                 $params = $queryParams;
 880                                 $params['diff'] = $currentRevision;
 881                                 $params['oldid'] = $oldid;
 882
 883                                 $r .= $this->skin->link(
 884                                         $block[0]->getTitle(),
 885                                         $nchanges[$n],
 886                                         array(),
 887                                         $params,
 888                                         array( 'known', 'noclasses' )
 889                                 );
 890                         }
 891                 }
 892
 893                 # History
 894                 if( $allLogs ) {
 895                         // don't show history link for logs
 896                 } else if( $namehidden || !$block[0]->getTitle()->exists() ) {
 897                         $r .= $this->message['pipe-separator'] . $this->message['hist'] . ')';
 898                 } else {
 899                         $params = $queryParams;
 900                         $params['action'] = 'history';
 901
 902                         $r .= $this->message['pipe-separator'] .
 903                                 $this->skin->link(
 904                                         $block[0]->getTitle(),
 905                                         $this->message['hist'],
 906                                         array(),
 907                                         $params,
 908                                         array( 'known', 'noclasses' )
 909                                 ) . ')';
 910                 }
 911                 $r .= ' . . ';
 912
 913                 # Character difference (does not apply if only log items)
 914                 if( $wgRCShowChangedSize && !$allLogs ) {
 915                         $last = 0;
 916                         $first = count($block) - 1;
 917                         # Some events (like logs) have an "empty" size, so we need to skip those...
 918                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 919                                 $last++;
 920                         }
 921                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 922                                 $first--;
 923                         }
 924                         # Get net change
 925                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 926                                 $block[$last]->mAttribs['rc_new_len'] );
 927
 928                         if( $chardiff == '' ) {
 929                                 $r .= ' ';
 930                         } else {
 931                                 $r .= ' ' . $chardiff. ' . . ';
 932                         }
 933                 }
 934
 935                 $r .= $users;
 936                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 937
 938                 $r .= "</td></tr></table>\n";
 939
 940                 # Sub-entries
 941                 $r .= '<div id="mw-rc-subentries-'.$jsid.'" class="mw-changeslist-hidden">';
 942                 $r .= '<table class="mw-enhanced-rc">';
 943                 foreach( $block as $rcObj ) {
 944                         # Extract fields from DB into the function scope (rc_xxxx variables)
 945                         // FIXME: Would be good to replace this extract() call with something
 946                         // that explicitly initializes variables.
 947                         # Classes to apply -- TODO implement
 948                         $classes = array();
 949                         extract( $rcObj->mAttribs );
 950
 951                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 952                         $r .= '<tr><td style="vertical-align:top;font-family:monospace; padding:0px;">';
 953                         $r .= $this->spacerIndent() . $this->spacerIndent();
 954                         $r .= $this->recentChangesFlags( $rc_new, $rc_minor, $rcObj->unpatrolled, '&nbsp;', $rc_bot );
 955                         $r .= '&nbsp;</td><td style="vertical-align:top; padding:0px;"><span style="font-family:monospace">';
 956
 957                         $params = $queryParams;
 958
 959                         if( $rc_this_oldid != 0 ) {
 960                                 $params['oldid'] = $rc_this_oldid;
 961                         }
 962
 963                         # Log timestamp
 964                         if( $rc_type == RC_LOG ) {
 965                                 $link = $rcObj->timestamp;
 966                         # Revision link
 967                         } else if( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
 968                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
 969                         } else {
 970                                 if ( $rcObj->unpatrolled && $rc_type == RC_NEW) {
 971                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
 972                                 }
 973
 974                                 $link = $this->skin->link(
 975                                                 $rcObj->getTitle(),
 976                                                 $rcObj->timestamp,
 977                                                 array(),
 978                                                 $params,
 979                                                 array( 'known', 'noclasses' )
 980                                         );
 981                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
 982                                         $link = '<span class="history-deleted">'.$link.'</span> ';
 983                         }
 984                         $r .= $link . '</span>';
 985
 986                         if ( !$rc_type == RC_LOG || $rc_type == RC_NEW ) {
 987                                 $r .= ' (';
 988                                 $r .= $rcObj->curlink;
 989                                 $r .= $this->message['pipe-separator'];
 990                                 $r .= $rcObj->lastlink;
 991                                 $r .= ')';
 992                         }
 993                         $r .= ' . . ';
 994
 995                         # Character diff
 996                         if( $wgRCShowChangedSize ) {
 997                                 $r .= ( $rcObj->getCharacterDifference() == '' ? '' : $rcObj->getCharacterDifference() . ' . . ' ) ;
 998                         }
 999                         # User links
1000                         $r .= $rcObj->userlink;
1001                         $r .= $rcObj->usertalklink;
1002                         // log action
1003                         $this->insertAction( $r, $rcObj );
1004                         // log comment
1005                         $this->insertComment( $r, $rcObj );
1006                         # Rollback
1007                         $this->insertRollback( $r, $rcObj );
1008                         # Tags
1009                         $this->insertTags( $r, $rcObj, $classes );
1010
1011                         $r .= "</td></tr>\n";
1012                 }
1013                 $r .= "</table></div>\n";
1014
1015                 $this->rcCacheIndex++;
1016
1017                 wfProfileOut( __METHOD__ );
1018
1019                 return $r;
1020         }
1021
1022         /**
1023          * Generate HTML for an arrow or placeholder graphic
1024          * @param $dir String: one of '', 'd', 'l', 'r'
1025          * @param $alt String: text
1026          * @param $title String: text
1027          * @return String: HTML <img> tag
1028          */
1029         protected function arrow( $dir, $alt='', $title='' ) {
1030                 global $wgStylePath;
1031                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1032                 $encAlt = htmlspecialchars( $alt );
1033                 $encTitle = htmlspecialchars( $title );
1034                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1035         }
1036
1037         /**
1038          * Generate HTML for a right- or left-facing arrow,
1039          * depending on language direction.
1040          * @return String: HTML <img> tag
1041          */
1042         protected function sideArrow() {
1043                 global $wgContLang;
1044                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
1045                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1046         }
1047
1048         /**
1049          * Generate HTML for a down-facing arrow
1050          * depending on language direction.
1051          * @return String: HTML <img> tag
1052          */
1053         protected function downArrow() {
1054                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1055         }
1056
1057         /**
1058          * Generate HTML for a spacer image
1059          * @return String: HTML <img> tag
1060          */
1061         protected function spacerArrow() {
1062                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1063         }
1064
1065         /**
1066          * Add a set of spaces
1067          * @return String: HTML <td> tag
1068          */
1069         protected function spacerIndent() {
1070                 return '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
1071         }
1072
1073         /**
1074          * Enhanced RC ungrouped line.
1075          * @return String: a HTML formated line (generated using $r)
1076          */
1077         protected function recentChangesBlockLine( $rcObj ) {
1078                 global $wgRCShowChangedSize;
1079
1080                 wfProfileIn( __METHOD__ );
1081
1082                 # Extract fields from DB into the function scope (rc_xxxx variables)
1083                 // FIXME: Would be good to replace this extract() call with something
1084                 // that explicitly initializes variables.
1085                 $classes = array(); // TODO implement
1086                 extract( $rcObj->mAttribs );
1087                 $query['curid'] = $rc_cur_id;
1088
1089                 $r = '<table class="mw-enhanced-rc"><tr>';
1090                 $r .= '<td class="mw-enhanced-rc">' . $this->spacerArrow() . '&nbsp;';
1091                 # Flag and Timestamp
1092                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
1093                         $r .= '&nbsp;&nbsp;&nbsp;&nbsp;'; // 4 flags -> 4 spaces
1094                 } else {
1095                         $r .= $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $rcObj->unpatrolled, '&nbsp;', $rc_bot );
1096                 }
1097                 $r .= '&nbsp;'.$rcObj->timestamp.'&nbsp;</td><td style="padding:0px;">';
1098                 # Article or log link
1099                 if( $rc_log_type ) {
1100                         $logtitle = Title::newFromText( "Log/$rc_log_type", NS_SPECIAL );
1101                         $logname = LogPage::logName( $rc_log_type );
1102                         $r .= '(' . $this->skin->link(
1103                                 $logtitle,
1104                                 $logname,
1105                                 array(),
1106                                 array(),
1107                                 array( 'known', 'noclasses' )
1108                         ) . ')';
1109                 } else {
1110                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1111                 }
1112                 # Diff and hist links
1113                 if ( $rc_type != RC_LOG ) {
1114                         $r .= ' ('. $rcObj->difflink . $this->message['pipe-separator'];
1115                         $query['action'] = 'history';
1116                         $r .= $this->skin->link(
1117                                 $rcObj->getTitle(),
1118                                 $this->message['hist'],
1119                                 array(),
1120                                 $query,
1121                                 array( 'known', 'noclasses' )
1122                         ) . ')';
1123                 }
1124                 $r .= ' . . ';
1125                 # Character diff
1126                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1127                         $r .= "$cd . . ";
1128                 }
1129                 # User/talk
1130                 $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1131                 # Log action (if any)
1132                 if( $rc_log_type ) {
1133                         if( $this->isDeleted($rcObj,LogPage::DELETED_ACTION) ) {
1134                                 $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
1135                         } else {
1136                                 $r .= ' ' . LogPage::actionText( $rc_log_type, $rc_log_action, $rcObj->getTitle(),
1137                                         $this->skin, LogPage::extractParams($rc_params), true, true );
1138                         }
1139                 }
1140                 $this->insertComment( $r, $rcObj );
1141                 $this->insertRollback( $r, $rcObj );
1142                 # Tags
1143                 $this->insertTags( $r, $rcObj, $classes );
1144                 # Show how many people are watching this if enabled
1145                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1146
1147                 $r .= "</td></tr></table>\n";
1148
1149                 wfProfileOut( __METHOD__ );
1150
1151                 return $r;
1152         }
1153
1154         /**
1155          * If enhanced RC is in use, this function takes the previously cached
1156          * RC lines, arranges them, and outputs the HTML
1157          */
1158         protected function recentChangesBlock() {
1159                 if( count ( $this->rc_cache ) == 0 ) {
1160                         return '';
1161                 }
1162
1163                 wfProfileIn( __METHOD__ );
1164
1165                 $blockOut = '';
1166                 foreach( $this->rc_cache as $block ) {
1167                         if( count( $block ) < 2 ) {
1168                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1169                         } else {
1170                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1171                         }
1172                 }
1173
1174                 wfProfileOut( __METHOD__ );
1175
1176                 return '<div>'.$blockOut.'</div>';
1177         }
1178
1179         /**
1180          * Returns text for the end of RC
1181          * If enhanced RC is in use, returns pretty much all the text
1182          */
1183         public function endRecentChangesList() {
1184                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1185         }
1186
1187 }