includes/ChangesList.php

   1 <?php
   2 /**
   3  * Classes to show various lists of changes:
   4  * - what links here
   5  * - related changes
   6  * - recent changes
   7  *
   8  * @file
   9  */
  10
  11 /**
  12  * @todo document
  13  */
  14 class RCCacheEntry extends RecentChange {
  15         var $secureName, $link;
  16         var $curlink , $difflink, $lastlink, $usertalklink, $versionlink;
  17         var $userlink, $timestamp, $watched;
  18
  19         static function newFromParent( $rc ) {
  20                 $rc2 = new RCCacheEntry;
  21                 $rc2->mAttribs = $rc->mAttribs;
  22                 $rc2->mExtra = $rc->mExtra;
  23                 return $rc2;
  24         }
  25 }
  26
  27 /**
  28  * Base class for all changes lists
  29  */
  30 class ChangesList {
  31         public $skin;
  32         protected $watchlist = false;
  33
  34         /**
  35         * Changeslist contructor
  36         * @param $skin Skin
  37         */
  38         public function __construct( $skin ) {
  39                 $this->skin = $skin;
  40                 $this->preCacheMessages();
  41         }
  42
  43         /**
  44          * Fetch an appropriate changes list class for the specified user
  45          * Some users might want to use an enhanced list format, for instance
  46          *
  47          * @param $user User to fetch the list class for
  48          * @return ChangesList derivative
  49          */
  50         public static function newFromUser( &$user ) {
  51                 global $wgRequest;
  52
  53                 $sk = $user->getSkin();
  54                 $list = null;
  55                 if( wfRunHooks( 'FetchChangesList', array( &$user, &$sk, &$list ) ) ) {
  56                         $new = $wgRequest->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
  57                         return $new ? new EnhancedChangesList( $sk ) : new OldChangesList( $sk );
  58                 } else {
  59                         return $list;
  60                 }
  61         }
  62
  63         /**
  64          * Sets the list to use a <li class="watchlist-(namespace)-(page)"> tag
  65          * @param $value Boolean
  66          */
  67         public function setWatchlistDivs( $value = true ) {
  68                 $this->watchlist = $value;
  69         }
  70
  71         /**
  72          * As we use the same small set of messages in various methods and that
  73          * they are called often, we call them once and save them in $this->message
  74          */
  75         private function preCacheMessages() {
  76                 if( !isset( $this->message ) ) {
  77                         foreach ( explode( ' ', 'cur diff hist last blocklink history ' .
  78                         'semicolon-separator pipe-separator' ) as $msg ) {
  79                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
  80                         }
  81                 }
  82         }
  83
  84
  85         /**
  86          * Returns the appropriate flags for new page, minor change and patrolling
  87          * @param $new Boolean
  88          * @param $minor Boolean
  89          * @param $patrolled Boolean
  90          * @param $nothing String to use for empty space
  91          * @param $bot Boolean
  92          * @return String
  93          */
  94         protected function recentChangesFlags( $new, $minor, $patrolled, $nothing = '&#160;', $bot = false ) {
  95                 $f = $new ? self::flag( 'newpage' ) : $nothing;
  96                 $f .= $minor ? self::flag( 'minor' ) : $nothing;
  97                 $f .= $bot ? self::flag( 'bot' ) : $nothing;
  98                 $f .= $patrolled ? self::flag( 'unpatrolled' ) : $nothing;
  99                 return $f;
 100         }
 101
 102         /**
 103          * Provide the <abbr> element appropriate to a given abbreviated flag,
 104          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 105          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 106          * "!" respectively, plus it will have an appropriate title and class.
 107          *
 108          * @param $key String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 109          * @return String: Raw HTML
 110          */
 111         public static function flag( $key ) {
 112                 static $messages = null;
 113                 if ( is_null( $messages ) ) {
 114                         foreach ( explode( ' ', 'minoreditletter boteditletter newpageletter ' .
 115                         'unpatrolledletter recentchanges-label-minor recentchanges-label-bot ' .
 116                         'recentchanges-label-newpage recentchanges-label-unpatrolled' ) as $msg ) {
 117                                 $messages[$msg] = wfMsgExt( $msg, 'escapenoentities' );
 118                         }
 119                 }
 120                 # Inconsistent naming, bleh
 121                 if ( $key == 'newpage' || $key == 'unpatrolled' ) {
 122                         $key2 = $key;
 123                 } else {
 124                         $key2 = $key . 'edit';
 125                 }
 126                 return "<abbr class=\"$key\" title=\""
 127                         . $messages["recentchanges-label-$key"] . "\">"
 128                         . $messages["${key2}letter"]
 129                         . '</abbr>';
 130         }
 131
 132         /**
 133          * Some explanatory wrapper text for the given flag, to be used in a legend
 134          * explaining what the flags mean.  For instance, "N - new page".  See
 135          * also flag().
 136          *
 137          * @param $key String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 138          * @return String: Raw HTML
 139          */
 140         private static function flagLine( $key ) {
 141                 return wfMsgExt( "recentchanges-legend-$key", array( 'escapenoentities',
 142                         'replaceafter' ), self::flag( $key ) );
 143         }
 144
 145         /**
 146          * A handy legend to tell users what the little "m", "b", and so on mean.
 147          *
 148          * @return String: Raw HTML
 149          */
 150         public static function flagLegend() {
 151                 global $wgGroupPermissions, $wgLang;
 152
 153                 $flags = array( self::flagLine( 'newpage' ),
 154                         self::flagLine( 'minor' ) );
 155
 156                 # Don't show info on bot edits unless there's a bot group of some kind
 157                 foreach ( $wgGroupPermissions as $rights ) {
 158                         if ( isset( $rights['bot'] ) && $rights['bot'] ) {
 159                                 $flags[] = self::flagLine( 'bot' );
 160                                 break;
 161                         }
 162                 }
 163
 164                 if ( self::usePatrol() ) {
 165                         $flags[] = self::flagLine( 'unpatrolled' );
 166                 }
 167
 168                 return '<div class="mw-rc-label-legend">' .
 169                         wfMsgExt( 'recentchanges-label-legend', 'parseinline',
 170                         $wgLang->commaList( $flags ) ) . '</div>';
 171         }
 172
 173         /**
 174          * Returns text for the start of the tabular part of RC
 175          * @return String
 176          */
 177         public function beginRecentChangesList() {
 178                 $this->rc_cache = array();
 179                 $this->rcMoveIndex = 0;
 180                 $this->rcCacheIndex = 0;
 181                 $this->lastdate = '';
 182                 $this->rclistOpen = false;
 183                 return '';
 184         }
 185
 186         /**
 187          * Show formatted char difference
 188          * @param $old Integer: bytes
 189          * @param $new Integer: bytes
 190          * @returns String
 191          */
 192         public static function showCharacterDifference( $old, $new ) {
 193                 global $wgRCChangedSizeThreshold, $wgLang, $wgMiserMode;
 194                 $szdiff = $new - $old;
 195
 196                 $code = $wgLang->getCode();
 197                 static $fastCharDiff = array();
 198                 if ( !isset($fastCharDiff[$code]) ) {
 199                         $fastCharDiff[$code] = $wgMiserMode || wfMsgNoTrans( 'rc-change-size' ) === '$1';
 200                 }
 201
 202                 $formatedSize = $wgLang->formatNum($szdiff);
 203
 204                 if ( !$fastCharDiff[$code] ) {
 205                         $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape' ), $formatedSize );
 206                 }
 207
 208                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 209                         $tag = 'strong';
 210                 } else {
 211                     $tag = 'span';
 212                 }
 213                 if( $szdiff === 0 ) {
 214                         return "<$tag class='mw-plusminus-null'>($formatedSize)</$tag>";
 215                 } elseif( $szdiff > 0 ) {
 216                         return "<$tag class='mw-plusminus-pos'>(+$formatedSize)</$tag>";
 217             } else {
 218                         return "<$tag class='mw-plusminus-neg'>($formatedSize)</$tag>";
 219                 }
 220         }
 221
 222         /**
 223          * Returns text for the end of RC
 224          * @return String
 225          */
 226         public function endRecentChangesList() {
 227                 if( $this->rclistOpen ) {
 228                         return "</ul>\n";
 229                 } else {
 230                         return '';
 231                 }
 232         }
 233
 234         public function insertMove( &$s, $rc ) {
 235                 # Diff
 236                 $s .= '(' . $this->message['diff'] . ') (';
 237                 # Hist
 238                 $s .= $this->skin->link(
 239                         $rc->getMovedToTitle(),
 240                         $this->message['hist'],
 241                         array(),
 242                         array( 'action' => 'history' ),
 243                         array( 'known', 'noclasses' )
 244                 ) . ') . . ';
 245                 # "[[x]] moved to [[y]]"
 246                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 247                 $s .= wfMsg(
 248                         $msg,
 249                         $this->skin->link(
 250                                 $rc->getTitle(),
 251                                 null,
 252                                 array(),
 253                                 array( 'redirect' => 'no' ),
 254                                 array( 'known', 'noclasses' )
 255                         ),
 256                         $this->skin->link(
 257                                 $rc->getMovedToTitle(),
 258                                 null,
 259                                 array(),
 260                                 array(),
 261                                 array( 'known', 'noclasses' )
 262                         )
 263                 );
 264         }
 265
 266         public function insertDateHeader( &$s, $rc_timestamp ) {
 267                 global $wgLang;
 268                 # Make date header if necessary
 269                 $date = $wgLang->date( $rc_timestamp, true, true );
 270                 if( $date != $this->lastdate ) {
 271                         if( $this->lastdate != '' ) {
 272                                 $s .= "</ul>\n";
 273                         }
 274                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 275                         $this->lastdate = $date;
 276                         $this->rclistOpen = true;
 277                 }
 278         }
 279
 280         public function insertLog( &$s, $title, $logtype ) {
 281                 $logname = LogPage::logName( $logtype );
 282                 $s .= '(' . $this->skin->link(
 283                         $title,
 284                         $logname,
 285                         array(),
 286                         array(),
 287                         array( 'known', 'noclasses' )
 288                 ) . ')';
 289         }
 290
 291         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 292                 # Diff link
 293                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 294                         $diffLink = $this->message['diff'];
 295                 } else if( !self::userCan($rc,Revision::DELETED_TEXT) ) {
 296                         $diffLink = $this->message['diff'];
 297                 } else {
 298                         $query = array(
 299                                 'curid' => $rc->mAttribs['rc_cur_id'],
 300                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 301                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 302                         );
 303
 304                         if( $unpatrolled ) {
 305                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 306                         };
 307
 308                         $diffLink = $this->skin->link(
 309                                 $rc->getTitle(),
 310                                 $this->message['diff'],
 311                                 array( 'tabindex' => $rc->counter ),
 312                                 $query,
 313                                 array( 'known', 'noclasses' )
 314                         );
 315                 }
 316                 $s .= '(' . $diffLink . $this->message['pipe-separator'];
 317                 # History link
 318                 $s .= $this->skin->link(
 319                         $rc->getTitle(),
 320                         $this->message['hist'],
 321                         array(),
 322                         array(
 323                                 'curid' => $rc->mAttribs['rc_cur_id'],
 324                                 'action' => 'history'
 325                         ),
 326                         array( 'known', 'noclasses' )
 327                 );
 328                 $s .= ') . . ';
 329         }
 330
 331         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 332                 global $wgContLang;
 333                 # If it's a new article, there is no diff link, but if it hasn't been
 334                 # patrolled yet, we need to give users a way to do so
 335                 $params = array();
 336
 337                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 338                         $params['rcid'] = $rc->mAttribs['rc_id'];
 339                 }
 340
 341                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 342                         $articlelink = $this->skin->link(
 343                                 $rc->getTitle(),
 344                                 null,
 345                                 array(),
 346                                 $params,
 347                                 array( 'known', 'noclasses' )
 348                         );
 349                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 350                 } else {
 351                         $articlelink = ' '. $this->skin->link(
 352                                 $rc->getTitle(),
 353                                 null,
 354                                 array(),
 355                                 $params,
 356                                 array( 'known', 'noclasses' )
 357                         );
 358                 }
 359                 # Bolden pages watched by this user
 360                 if( $watched ) {
 361                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 362                 }
 363                 # RTL/LTR marker
 364                 $articlelink .= $wgContLang->getDirMark();
 365
 366                 wfRunHooks( 'ChangesListInsertArticleLink',
 367                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 368
 369                 $s .= " $articlelink";
 370         }
 371
 372         public function insertTimestamp( &$s, $rc ) {
 373                 global $wgLang;
 374                 $s .= $this->message['semicolon-separator'] .
 375                         $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 376         }
 377
 378         /** Insert links to user page, user talk page and eventually a blocking link */
 379         public function insertUserRelatedLinks( &$s, &$rc ) {
 380                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 381                    $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 382                 } else {
 383                   $s .= $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 384                   $s .= $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 385                 }
 386         }
 387
 388         /** insert a formatted action */
 389         public function insertAction( &$s, &$rc ) {
 390                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 391                         if( $this->isDeleted( $rc, LogPage::DELETED_ACTION ) ) {
 392                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 393                         } else {
 394                                 $s .= ' '.LogPage::actionText( $rc->mAttribs['rc_log_type'], $rc->mAttribs['rc_log_action'],
 395                                         $rc->getTitle(), $this->skin, LogPage::extractParams( $rc->mAttribs['rc_params'] ), true, true );
 396                         }
 397                 }
 398         }
 399
 400         /** insert a formatted comment */
 401         public function insertComment( &$s, &$rc ) {
 402                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 403                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 404                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 405                         } else {
 406                                 $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 407                         }
 408                 }
 409         }
 410
 411         /**
 412          * Check whether to enable recent changes patrol features
 413          * @return Boolean
 414          */
 415         public static function usePatrol() {
 416                 global $wgUser;
 417                 return $wgUser->useRCPatrol();
 418         }
 419
 420         /**
 421          * Returns the string which indicates the number of watching users
 422          */
 423         protected function numberofWatchingusers( $count ) {
 424                 global $wgLang;
 425                 static $cache = array();
 426                 if( $count > 0 ) {
 427                         if( !isset( $cache[$count] ) ) {
 428                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 429                                         array('parsemag', 'escape' ), $wgLang->formatNum( $count ) );
 430                         }
 431                         return $cache[$count];
 432                 } else {
 433                         return '';
 434                 }
 435         }
 436
 437         /**
 438          * Determine if said field of a revision is hidden
 439          * @param $rc RCCacheEntry
 440          * @param $field Integer: one of DELETED_* bitfield constants
 441          * @return Boolean
 442          */
 443         public static function isDeleted( $rc, $field ) {
 444                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 445         }
 446
 447         /**
 448          * Determine if the current user is allowed to view a particular
 449          * field of this revision, if it's marked as deleted.
 450          * @param $rc RCCacheEntry
 451          * @param $field Integer
 452          * @return Boolean
 453          */
 454         public static function userCan( $rc, $field ) {
 455                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 456                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 457                 } else {
 458                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 459                 }
 460         }
 461
 462         protected function maybeWatchedLink( $link, $watched = false ) {
 463                 if( $watched ) {
 464                         return '<strong class="mw-watched">' . $link . '</strong>';
 465                 } else {
 466                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 467                 }
 468         }
 469
 470         /** Inserts a rollback link */
 471         public function insertRollback( &$s, &$rc ) {
 472                 global $wgUser;
 473                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 474                         $page = $rc->getTitle();
 475                         /** Check for rollback and edit permissions, disallow special pages, and only
 476                           * show a link on the top-most revision */
 477                         if ($wgUser->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 478                         {
 479                                 $rev = new Revision( array(
 480                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 481                                         'user'      => $rc->mAttribs['rc_user'],
 482                                         'user_text' => $rc->mAttribs['rc_user_text'],
 483                                         'deleted'   => $rc->mAttribs['rc_deleted']
 484                                 ) );
 485                                 $rev->setTitle( $page );
 486                                 $s .= ' '.$this->skin->generateRollback( $rev );
 487                         }
 488                 }
 489         }
 490
 491         public function insertTags( &$s, &$rc, &$classes ) {
 492                 if ( empty($rc->mAttribs['ts_tags']) )
 493                         return;
 494
 495                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 496                 $classes = array_merge( $classes, $newClasses );
 497                 $s .= ' ' . $tagSummary;
 498         }
 499
 500         public function insertExtra( &$s, &$rc, &$classes ) {
 501                 ## Empty, used for subclassers to add anything special.
 502         }
 503 }
 504
 505
 506 /**
 507  * Generate a list of changes using the good old system (no javascript)
 508  */
 509 class OldChangesList extends ChangesList {
 510         /**
 511          * Format a line using the old system (aka without any javascript).
 512          */
 513         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 514                 global $wgLang, $wgRCShowChangedSize, $wgUser;
 515                 wfProfileIn( __METHOD__ );
 516                 # Should patrol-related stuff be shown?
 517                 $unpatrolled = $wgUser->useRCPatrol() && !$rc->mAttribs['rc_patrolled'];
 518
 519                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 520                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 521
 522                 $s = '';
 523                 $classes = array();
 524                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 525                 if( $linenumber ) {
 526                         if( $linenumber & 1 ) {
 527                                 $classes[] = 'mw-line-odd';
 528                         }
 529                         else {
 530                                 $classes[] = 'mw-line-even';
 531                         }
 532                 }
 533
 534                 // Moved pages
 535                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 536                         $this->insertMove( $s, $rc );
 537                 // Log entries
 538                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 539                         $logtitle = Title::newFromText( 'Log/'.$rc->mAttribs['rc_log_type'], NS_SPECIAL );
 540                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 541                 // Log entries (old format) or log targets, and special pages
 542                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 543                         list( $name, $subpage ) = SpecialPage::resolveAliasWithSubpage( $rc->mAttribs['rc_title'] );
 544                         if( $name == 'Log' ) {
 545                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 546                         }
 547                 // Regular entries
 548                 } else {
 549                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 550                         # M, N, b and ! (minor, new, bot and unpatrolled)
 551                         $s .= $this->recentChangesFlags( $rc->mAttribs['rc_new'], $rc->mAttribs['rc_minor'],
 552                                 $unpatrolled, '', $rc->mAttribs['rc_bot'] );
 553                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 554                 }
 555                 # Edit/log timestamp
 556                 $this->insertTimestamp( $s, $rc );
 557                 # Bytes added or removed
 558                 if( $wgRCShowChangedSize ) {
 559                         $cd = $rc->getCharacterDifference();
 560                         if( $cd != '' ) {
 561                                 $s .= "$cd  . . ";
 562                         }
 563                 }
 564                 # User tool links
 565                 $this->insertUserRelatedLinks( $s, $rc );
 566                 # Log action text (if any)
 567                 $this->insertAction( $s, $rc );
 568                 # Edit or log comment
 569                 $this->insertComment( $s, $rc );
 570                 # Tags
 571                 $this->insertTags( $s, $rc, $classes );
 572                 # Rollback
 573                 $this->insertRollback( $s, $rc );
 574                 # For subclasses
 575                 $this->insertExtra( $s, $rc, $classes );
 576
 577                 # How many users watch this page
 578                 if( $rc->numberofWatchingusers > 0 ) {
 579                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 580                                 array( 'parsemag', 'escape' ), $wgLang->formatNum( $rc->numberofWatchingusers ) );
 581                 }
 582
 583                 if( $this->watchlist ) {
 584                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 585                 }
 586
 587                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 588
 589                 wfProfileOut( __METHOD__ );
 590                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 591         }
 592 }
 593
 594
 595 /**
 596  * Generate a list of changes using an Enhanced system (uses javascript).
 597  */
 598 class EnhancedChangesList extends ChangesList {
 599         /**
 600          * Add the JavaScript file for enhanced changeslist
 601          * @return String
 602          */
 603         public function beginRecentChangesList() {
 604                 global $wgOut;
 605                 $this->rc_cache = array();
 606                 $this->rcMoveIndex = 0;
 607                 $this->rcCacheIndex = 0;
 608                 $this->lastdate = '';
 609                 $this->rclistOpen = false;
 610                 $wgOut->addModules( 'mediawiki.legacy.enhancedchanges' );
 611                 return '';
 612         }
 613         /**
 614          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 615          */
 616         public function recentChangesLine( &$baseRC, $watched = false ) {
 617                 global $wgLang, $wgUser;
 618
 619                 wfProfileIn( __METHOD__ );
 620
 621                 # Create a specialised object
 622                 $rc = RCCacheEntry::newFromParent( $baseRC );
 623
 624                 # Extract fields from DB into the function scope (rc_xxxx variables)
 625                 // FIXME: Would be good to replace this extract() call with something
 626                 // that explicitly initializes variables.
 627                 extract( $rc->mAttribs );
 628                 $curIdEq = array( 'curid' => $rc_cur_id );
 629
 630                 # If it's a new day, add the headline and flush the cache
 631                 $date = $wgLang->date( $rc_timestamp, true );
 632                 $ret = '';
 633                 if( $date != $this->lastdate ) {
 634                         # Process current cache
 635                         $ret = $this->recentChangesBlock();
 636                         $this->rc_cache = array();
 637                         $ret .= Xml::element( 'h4', null, $date );
 638                         $this->lastdate = $date;
 639                 }
 640
 641                 # Should patrol-related stuff be shown?
 642                 if( $wgUser->useRCPatrol() ) {
 643                         $rc->unpatrolled = !$rc_patrolled;
 644                 } else {
 645                         $rc->unpatrolled = false;
 646                 }
 647
 648                 $showdifflinks = true;
 649                 # Make article link
 650                 // Page moves
 651                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 652                         $msg = ( $rc_type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 653                         $clink = wfMsg( $msg, $this->skin->linkKnown( $rc->getTitle(), null,
 654                                 array(), array( 'redirect' => 'no' ) ),
 655                                 $this->skin->linkKnown( $rc->getMovedToTitle() ) );
 656                 // New unpatrolled pages
 657                 } else if( $rc->unpatrolled && $rc_type == RC_NEW ) {
 658                         $clink = $this->skin->linkKnown( $rc->getTitle(), null, array(),
 659                                 array( 'rcid' => $rc_id ) );
 660                 // Log entries
 661                 } else if( $rc_type == RC_LOG ) {
 662                         if( $rc_log_type ) {
 663                                 $logtitle = SpecialPage::getTitleFor( 'Log', $rc_log_type );
 664                                 $clink = '(' . $this->skin->linkKnown( $logtitle,
 665                                         LogPage::logName($rc_log_type) ) . ')';
 666                         } else {
 667                                 $clink = $this->skin->link( $rc->getTitle() );
 668                         }
 669                         $watched = false;
 670                 // Log entries (old format) and special pages
 671                 } elseif( $rc_namespace == NS_SPECIAL ) {
 672                         list( $specialName, $logtype ) = SpecialPage::resolveAliasWithSubpage( $rc_title );
 673                         if ( $specialName == 'Log' ) {
 674                                 # Log updates, etc
 675                                 $logname = LogPage::logName( $logtype );
 676                                 $clink = '(' . $this->skin->linkKnown( $rc->getTitle(), $logname ) . ')';
 677                         } else {
 678                                 wfDebug( "Unexpected special page in recentchanges\n" );
 679                                 $clink = '';
 680                         }
 681                 // Edits
 682                 } else {
 683                         $clink = $this->skin->linkKnown( $rc->getTitle() );
 684                 }
 685
 686                 # Don't show unusable diff links
 687                 if ( !ChangesList::userCan($rc,Revision::DELETED_TEXT) ) {
 688                         $showdifflinks = false;
 689                 }
 690
 691                 $time = $wgLang->time( $rc_timestamp, true, true );
 692                 $rc->watched = $watched;
 693                 $rc->link = $clink;
 694                 $rc->timestamp = $time;
 695                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 696
 697                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 698                 # called too many times (50% of CPU time on RecentChanges!).
 699                 if( $rc->unpatrolled ) {
 700                         $rcIdQuery = array( 'rcid' => $rc_id );
 701                 } else {
 702                         $rcIdQuery = array();
 703                 }
 704                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $rc_this_oldid );
 705                 $querydiff = $curIdEq + array( 'diff' => $rc_this_oldid, 'oldid' =>
 706                         $rc_last_oldid ) + $rcIdQuery;
 707
 708                 if( !$showdifflinks ) {
 709                         $curLink = $this->message['cur'];
 710                         $diffLink = $this->message['diff'];
 711                 } else if( in_array( $rc_type, array(RC_NEW,RC_LOG,RC_MOVE,RC_MOVE_OVER_REDIRECT) ) ) {
 712                         if ( $rc_type != RC_NEW ) {
 713                                 $curLink = $this->message['cur'];
 714                         } else {
 715                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 716                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 717                         }
 718                         $diffLink = $this->message['diff'];
 719                 } else {
 720                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querydiff ) );
 721                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 722                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 723                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 724                 }
 725
 726                 # Make "last" link
 727                 if( !$showdifflinks || !$rc_last_oldid ) {
 728                         $lastLink = $this->message['last'];
 729                 } else if( $rc_type == RC_LOG || $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 730                         $lastLink = $this->message['last'];
 731                 } else {
 732                         $lastLink = $this->skin->linkKnown( $rc->getTitle(), $this->message['last'],
 733                                 array(), $curIdEq + array('diff' => $rc_this_oldid, 'oldid' => $rc_last_oldid) + $rcIdQuery );
 734                 }
 735
 736                 # Make user links
 737                 if( $this->isDeleted($rc,Revision::DELETED_USER) ) {
 738                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 739                 } else {
 740                         $rc->userlink = $this->skin->userLink( $rc_user, $rc_user_text );
 741                         $rc->usertalklink = $this->skin->userToolLinks( $rc_user, $rc_user_text );
 742                 }
 743
 744                 $rc->lastlink = $lastLink;
 745                 $rc->curlink  = $curLink;
 746                 $rc->difflink = $diffLink;
 747
 748                 # Put accumulated information into the cache, for later display
 749                 # Page moves go on their own line
 750                 $title = $rc->getTitle();
 751                 $secureName = $title->getPrefixedDBkey();
 752                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
 753                         # Use an @ character to prevent collision with page names
 754                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 755                 } else {
 756                         # Logs are grouped by type
 757                         if( $rc_type == RC_LOG ){
 758                                 $secureName = SpecialPage::getTitleFor( 'Log', $rc_log_type )->getPrefixedDBkey();
 759                         }
 760                         if( !isset( $this->rc_cache[$secureName] ) ) {
 761                                 $this->rc_cache[$secureName] = array();
 762                         }
 763
 764                         array_push( $this->rc_cache[$secureName], $rc );
 765                 }
 766
 767                 wfProfileOut( __METHOD__ );
 768
 769                 return $ret;
 770         }
 771
 772         /**
 773          * Enhanced RC group
 774          */
 775         protected function recentChangesBlockGroup( $block ) {
 776                 global $wgLang, $wgContLang, $wgRCShowChangedSize;
 777
 778                 wfProfileIn( __METHOD__ );
 779
 780                 $r = '<table class="mw-enhanced-rc"><tr>';
 781
 782                 # Collate list of users
 783                 $userlinks = array();
 784                 # Other properties
 785                 $unpatrolled = false;
 786                 $isnew = false;
 787                 $curId = $currentRevision = 0;
 788                 # Some catalyst variables...
 789                 $namehidden = true;
 790                 $allLogs = true;
 791                 foreach( $block as $rcObj ) {
 792                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 793                         if( $rcObj->mAttribs['rc_new'] ) {
 794                                 $isnew = true;
 795                         }
 796                         // If all log actions to this page were hidden, then don't
 797                         // give the name of the affected page for this block!
 798                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 799                                 $namehidden = false;
 800                         }
 801                         $u = $rcObj->userlink;
 802                         if( !isset( $userlinks[$u] ) ) {
 803                                 $userlinks[$u] = 0;
 804                         }
 805                         if( $rcObj->unpatrolled ) {
 806                                 $unpatrolled = true;
 807                         }
 808                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 809                                 $allLogs = false;
 810                         }
 811                         # Get the latest entry with a page_id and oldid
 812                         # since logs may not have these.
 813                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 814                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 815                         }
 816                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 817                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 818                         }
 819
 820                         $bot = $rcObj->mAttribs['rc_bot'];
 821                         $userlinks[$u]++;
 822                 }
 823
 824                 # Sort the list and convert to text
 825                 krsort( $userlinks );
 826                 asort( $userlinks );
 827                 $users = array();
 828                 foreach( $userlinks as $userlink => $count) {
 829                         $text = $userlink;
 830                         $text .= $wgContLang->getDirMark();
 831                         if( $count > 1 ) {
 832                                 $text .= ' (' . $wgLang->formatNum( $count ) . '×)';
 833                         }
 834                         array_push( $users, $text );
 835                 }
 836
 837                 $users = ' <span class="changedby">[' .
 838                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 839
 840                 # ID for JS visibility toggle
 841                 $jsid = $this->rcCacheIndex;
 842                 # onclick handler to toggle hidden/expanded
 843                 $toggleLink = "onclick='toggleVisibility($jsid); return false'";
 844                 # Title for <a> tags
 845                 $expandTitle = htmlspecialchars( wfMsg( 'rc-enhanced-expand' ) );
 846                 $closeTitle = htmlspecialchars( wfMsg( 'rc-enhanced-hide' ) );
 847
 848                 $tl = "<span id='mw-rc-openarrow-$jsid' class='mw-changeslist-expanded' style='visibility:hidden'><a href='#' $toggleLink title='$expandTitle'>" . $this->sideArrow() . "</a></span>";
 849                 $tl .= "<span id='mw-rc-closearrow-$jsid' class='mw-changeslist-hidden' style='display:none'><a href='#' $toggleLink title='$closeTitle'>" . $this->downArrow() . "</a></span>";
 850                 $r .= '<td class="mw-enhanced-rc">'.$tl.'&#160;';
 851
 852                 # Main line
 853                 $r .= $this->recentChangesFlags( $isnew, false, $unpatrolled, '&#160;', $bot );
 854
 855                 # Timestamp
 856                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td style="padding:0px;">';
 857
 858                 # Article link
 859                 if( $namehidden ) {
 860                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 861                 } else if( $allLogs ) {
 862                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 863                 } else {
 864                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 865                 }
 866
 867                 $r .= $wgContLang->getDirMark();
 868
 869                 $queryParams['curid'] = $curId;
 870                 # Changes message
 871                 $n = count($block);
 872                 static $nchanges = array();
 873                 if ( !isset( $nchanges[$n] ) ) {
 874                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) );
 875                 }
 876                 # Total change link
 877                 $r .= ' ';
 878                 if( !$allLogs ) {
 879                         $r .= '(';
 880                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT ) ) {
 881                                 $r .= $nchanges[$n];
 882                         } else if( $isnew ) {
 883                                 $r .= $nchanges[$n];
 884                         } else {
 885                                 $params = $queryParams;
 886                                 $params['diff'] = $currentRevision;
 887                                 $params['oldid'] = $oldid;
 888
 889                                 $r .= $this->skin->link(
 890                                         $block[0]->getTitle(),
 891                                         $nchanges[$n],
 892                                         array(),
 893                                         $params,
 894                                         array( 'known', 'noclasses' )
 895                                 );
 896                         }
 897                 }
 898
 899                 # History
 900                 if( $allLogs ) {
 901                         // don't show history link for logs
 902                 } else if( $namehidden || !$block[0]->getTitle()->exists() ) {
 903                         $r .= $this->message['pipe-separator'] . $this->message['hist'] . ')';
 904                 } else {
 905                         $params = $queryParams;
 906                         $params['action'] = 'history';
 907
 908                         $r .= $this->message['pipe-separator'] .
 909                                 $this->skin->link(
 910                                         $block[0]->getTitle(),
 911                                         $this->message['hist'],
 912                                         array(),
 913                                         $params,
 914                                         array( 'known', 'noclasses' )
 915                                 ) . ')';
 916                 }
 917                 $r .= ' . . ';
 918
 919                 # Character difference (does not apply if only log items)
 920                 if( $wgRCShowChangedSize && !$allLogs ) {
 921                         $last = 0;
 922                         $first = count($block) - 1;
 923                         # Some events (like logs) have an "empty" size, so we need to skip those...
 924                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 925                                 $last++;
 926                         }
 927                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 928                                 $first--;
 929                         }
 930                         # Get net change
 931                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 932                                 $block[$last]->mAttribs['rc_new_len'] );
 933
 934                         if( $chardiff == '' ) {
 935                                 $r .= ' ';
 936                         } else {
 937                                 $r .= ' ' . $chardiff. ' . . ';
 938                         }
 939                 }
 940
 941                 $r .= $users;
 942                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 943
 944                 $r .= "</td></tr></table>\n";
 945
 946                 # Sub-entries
 947                 $r .= '<div id="mw-rc-subentries-'.$jsid.'" class="mw-changeslist-hidden">';
 948                 $r .= '<table class="mw-enhanced-rc">';
 949                 foreach( $block as $rcObj ) {
 950                         # Extract fields from DB into the function scope (rc_xxxx variables)
 951                         // FIXME: Would be good to replace this extract() call with something
 952                         // that explicitly initializes variables.
 953                         # Classes to apply -- TODO implement
 954                         $classes = array();
 955                         extract( $rcObj->mAttribs );
 956
 957                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 958                         $r .= '<tr><td style="vertical-align:top;font-family:monospace; padding:0px;">';
 959                         $r .= $this->spacerIndent() . $this->spacerIndent();
 960                         $r .= $this->recentChangesFlags( $rc_new, $rc_minor, $rcObj->unpatrolled, '&#160;', $rc_bot );
 961                         $r .= '&#160;</td><td style="vertical-align:top; padding:0px;"><span style="font-family:monospace">';
 962
 963                         $params = $queryParams;
 964
 965                         if( $rc_this_oldid != 0 ) {
 966                                 $params['oldid'] = $rc_this_oldid;
 967                         }
 968
 969                         # Log timestamp
 970                         if( $rc_type == RC_LOG ) {
 971                                 $link = $rcObj->timestamp;
 972                         # Revision link
 973                         } else if( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
 974                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
 975                         } else {
 976                                 if ( $rcObj->unpatrolled && $rc_type == RC_NEW) {
 977                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
 978                                 }
 979
 980                                 $link = $this->skin->link(
 981                                                 $rcObj->getTitle(),
 982                                                 $rcObj->timestamp,
 983                                                 array(),
 984                                                 $params,
 985                                                 array( 'known', 'noclasses' )
 986                                         );
 987                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
 988                                         $link = '<span class="history-deleted">'.$link.'</span> ';
 989                         }
 990                         $r .= $link . '</span>';
 991
 992                         if ( !$rc_type == RC_LOG || $rc_type == RC_NEW ) {
 993                                 $r .= ' (';
 994                                 $r .= $rcObj->curlink;
 995                                 $r .= $this->message['pipe-separator'];
 996                                 $r .= $rcObj->lastlink;
 997                                 $r .= ')';
 998                         }
 999                         $r .= ' . . ';
1000
1001                         # Character diff
1002                         if( $wgRCShowChangedSize ) {
1003                                 $r .= ( $rcObj->getCharacterDifference() == '' ? '' : $rcObj->getCharacterDifference() . ' . . ' ) ;
1004                         }
1005                         # User links
1006                         $r .= $rcObj->userlink;
1007                         $r .= $rcObj->usertalklink;
1008                         // log action
1009                         $this->insertAction( $r, $rcObj );
1010                         // log comment
1011                         $this->insertComment( $r, $rcObj );
1012                         # Rollback
1013                         $this->insertRollback( $r, $rcObj );
1014                         # Tags
1015                         $this->insertTags( $r, $rcObj, $classes );
1016
1017                         $r .= "</td></tr>\n";
1018                 }
1019                 $r .= "</table></div>\n";
1020
1021                 $this->rcCacheIndex++;
1022
1023                 wfProfileOut( __METHOD__ );
1024
1025                 return $r;
1026         }
1027
1028         /**
1029          * Generate HTML for an arrow or placeholder graphic
1030          * @param $dir String: one of '', 'd', 'l', 'r'
1031          * @param $alt String: text
1032          * @param $title String: text
1033          * @return String: HTML <img> tag
1034          */
1035         protected function arrow( $dir, $alt='', $title='' ) {
1036                 global $wgStylePath;
1037                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1038                 $encAlt = htmlspecialchars( $alt );
1039                 $encTitle = htmlspecialchars( $title );
1040                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1041         }
1042
1043         /**
1044          * Generate HTML for a right- or left-facing arrow,
1045          * depending on language direction.
1046          * @return String: HTML <img> tag
1047          */
1048         protected function sideArrow() {
1049                 global $wgContLang;
1050                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
1051                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1052         }
1053
1054         /**
1055          * Generate HTML for a down-facing arrow
1056          * depending on language direction.
1057          * @return String: HTML <img> tag
1058          */
1059         protected function downArrow() {
1060                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1061         }
1062
1063         /**
1064          * Generate HTML for a spacer image
1065          * @return String: HTML <img> tag
1066          */
1067         protected function spacerArrow() {
1068                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1069         }
1070
1071         /**
1072          * Add a set of spaces
1073          * @return String: HTML <td> tag
1074          */
1075         protected function spacerIndent() {
1076                 return '&#160;&#160;&#160;&#160;&#160;';
1077         }
1078
1079         /**
1080          * Enhanced RC ungrouped line.
1081          * @return String: a HTML formated line (generated using $r)
1082          */
1083         protected function recentChangesBlockLine( $rcObj ) {
1084                 global $wgRCShowChangedSize;
1085
1086                 wfProfileIn( __METHOD__ );
1087
1088                 # Extract fields from DB into the function scope (rc_xxxx variables)
1089                 // FIXME: Would be good to replace this extract() call with something
1090                 // that explicitly initializes variables.
1091                 $classes = array(); // TODO implement
1092                 extract( $rcObj->mAttribs );
1093                 $query['curid'] = $rc_cur_id;
1094
1095                 $r = '<table class="mw-enhanced-rc"><tr>';
1096                 $r .= '<td class="mw-enhanced-rc">' . $this->spacerArrow() . '&#160;';
1097                 # Flag and Timestamp
1098                 if( $rc_type == RC_MOVE || $rc_type == RC_MOVE_OVER_REDIRECT ) {
1099                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1100                 } else {
1101                         $r .= $this->recentChangesFlags( $rc_type == RC_NEW, $rc_minor, $rcObj->unpatrolled, '&#160;', $rc_bot );
1102                 }
1103                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td style="padding:0px;">';
1104                 # Article or log link
1105                 if( $rc_log_type ) {
1106                         $logtitle = Title::newFromText( "Log/$rc_log_type", NS_SPECIAL );
1107                         $logname = LogPage::logName( $rc_log_type );
1108                         $r .= '(' . $this->skin->link(
1109                                 $logtitle,
1110                                 $logname,
1111                                 array(),
1112                                 array(),
1113                                 array( 'known', 'noclasses' )
1114                         ) . ')';
1115                 } else {
1116                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1117                 }
1118                 # Diff and hist links
1119                 if ( $rc_type != RC_LOG ) {
1120                         $r .= ' ('. $rcObj->difflink . $this->message['pipe-separator'];
1121                         $query['action'] = 'history';
1122                         $r .= $this->skin->link(
1123                                 $rcObj->getTitle(),
1124                                 $this->message['hist'],
1125                                 array(),
1126                                 $query,
1127                                 array( 'known', 'noclasses' )
1128                         ) . ')';
1129                 }
1130                 $r .= ' . . ';
1131                 # Character diff
1132                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1133                         $r .= "$cd . . ";
1134                 }
1135                 # User/talk
1136                 $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1137                 # Log action (if any)
1138                 if( $rc_log_type ) {
1139                         if( $this->isDeleted($rcObj,LogPage::DELETED_ACTION) ) {
1140                                 $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
1141                         } else {
1142                                 $r .= ' ' . LogPage::actionText( $rc_log_type, $rc_log_action, $rcObj->getTitle(),
1143                                         $this->skin, LogPage::extractParams($rc_params), true, true );
1144                         }
1145                 }
1146                 $this->insertComment( $r, $rcObj );
1147                 $this->insertRollback( $r, $rcObj );
1148                 # Tags
1149                 $this->insertTags( $r, $rcObj, $classes );
1150                 # Show how many people are watching this if enabled
1151                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1152
1153                 $r .= "</td></tr></table>\n";
1154
1155                 wfProfileOut( __METHOD__ );
1156
1157                 return $r;
1158         }
1159
1160         /**
1161          * If enhanced RC is in use, this function takes the previously cached
1162          * RC lines, arranges them, and outputs the HTML
1163          */
1164         protected function recentChangesBlock() {
1165                 if( count ( $this->rc_cache ) == 0 ) {
1166                         return '';
1167                 }
1168
1169                 wfProfileIn( __METHOD__ );
1170
1171                 $blockOut = '';
1172                 foreach( $this->rc_cache as $block ) {
1173                         if( count( $block ) < 2 ) {
1174                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1175                         } else {
1176                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1177                         }
1178                 }
1179
1180                 wfProfileOut( __METHOD__ );
1181
1182                 return '<div>'.$blockOut.'</div>';
1183         }
1184
1185         /**
1186          * Returns text for the end of RC
1187          * If enhanced RC is in use, returns pretty much all the text
1188          */
1189         public function endRecentChangesList() {
1190                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1191         }
1192
1193 }