includes/ChangesList.php

   1 <?php
   2 /**
   3  * Classes to show various lists of changes:
   4  * - watchlist
   5  * - related changes
   6  * - recent changes
   7  *
   8  * @file
   9  */
  10
  11 /**
  12  * @todo document
  13  */
  14 class RCCacheEntry extends RecentChange {
  15         var $secureName, $link;
  16         var $curlink , $difflink, $lastlink, $usertalklink, $versionlink;
  17         var $userlink, $timestamp, $watched;
  18
  19         /**
  20          * @param $rc RecentChange
  21          * @return RCCacheEntry
  22          */
  23         static function newFromParent( $rc ) {
  24                 $rc2 = new RCCacheEntry;
  25                 $rc2->mAttribs = $rc->mAttribs;
  26                 $rc2->mExtra = $rc->mExtra;
  27                 return $rc2;
  28         }
  29 }
  30
  31 /**
  32  * Base class for all changes lists
  33  */
  34 class ChangesList extends ContextSource {
  35
  36         /**
  37          * @var Skin
  38          */
  39         public $skin;
  40
  41         protected $watchlist = false;
  42
  43         protected $message;
  44
  45         /**
  46          * Changeslist contructor
  47          *
  48          * @param $obj Skin or IContextSource
  49          */
  50         public function __construct( $obj ) {
  51                 if ( $obj instanceof IContextSource ) {
  52                         $this->setContext( $obj );
  53                         $this->skin = $obj->getSkin();
  54                 } else {
  55                         $this->setContext( $obj->getContext() );
  56                         $this->skin = $obj;
  57                 }
  58                 $this->preCacheMessages();
  59         }
  60
  61         /**
  62          * Fetch an appropriate changes list class for the main context
  63          * This first argument used to be an User object.
  64          *
  65          * @deprecated in 1.18; use newFromContext() instead
  66          * @param $unused Unused
  67          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  68          */
  69         public static function newFromUser( $unused ) {
  70                 wfDeprecated( __METHOD__, '1.18' );
  71                 return self::newFromContext( RequestContext::getMain() );
  72         }
  73
  74         /**
  75          * Fetch an appropriate changes list class for the specified context
  76          * Some users might want to use an enhanced list format, for instance
  77          *
  78          * @param $context IContextSource to use
  79          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  80          */
  81         public static function newFromContext( IContextSource $context ) {
  82                 $user = $context->getUser();
  83                 $sk = $context->getSkin();
  84                 $list = null;
  85                 if( wfRunHooks( 'FetchChangesList', array( $user, &$sk, &$list ) ) ) {
  86                         $new = $context->getRequest()->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
  87                         return $new ? new EnhancedChangesList( $context ) : new OldChangesList( $context );
  88                 } else {
  89                         return $list;
  90                 }
  91         }
  92
  93         /**
  94          * Sets the list to use a <li class="watchlist-(namespace)-(page)"> tag
  95          * @param $value Boolean
  96          */
  97         public function setWatchlistDivs( $value = true ) {
  98                 $this->watchlist = $value;
  99         }
 100
 101         /**
 102          * As we use the same small set of messages in various methods and that
 103          * they are called often, we call them once and save them in $this->message
 104          */
 105         private function preCacheMessages() {
 106                 if( !isset( $this->message ) ) {
 107                         foreach ( explode( ' ', 'cur diff hist last blocklink history ' .
 108                         'semicolon-separator pipe-separator' ) as $msg ) {
 109                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
 110                         }
 111                 }
 112         }
 113
 114         /**
 115          * Returns the appropriate flags for new page, minor change and patrolling
 116          * @param $flags Array Associative array of 'flag' => Bool
 117          * @param $nothing String to use for empty space
 118          * @return String
 119          */
 120         protected function recentChangesFlags( $flags, $nothing = '&#160;' ) {
 121                 $f = '';
 122                 foreach( array( 'newpage', 'minor', 'bot', 'unpatrolled' ) as $flag ){
 123                         $f .= isset( $flags[$flag] ) && $flags[$flag]
 124                                 ? self::flag( $flag )
 125                                 : $nothing;
 126                 }
 127                 return $f;
 128         }
 129
 130         /**
 131          * Provide the <abbr> element appropriate to a given abbreviated flag,
 132          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 133          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 134          * "!" respectively, plus it will have an appropriate title and class.
 135          *
 136          * @param $flag String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 137          * @return String: Raw HTML
 138          */
 139         public static function flag( $flag ) {
 140                 static $messages = null;
 141                 if ( is_null( $messages ) ) {
 142                         $messages = array(
 143                                 'newpage' => array( 'newpageletter', 'recentchanges-label-newpage' ),
 144                                 'minoredit' => array( 'minoreditletter', 'recentchanges-label-minor' ),
 145                                 'botedit' => array( 'boteditletter', 'recentchanges-label-bot' ),
 146                                 'unpatrolled' => array( 'unpatrolledletter', 'recentchanges-label-unpatrolled' ),
 147                         );
 148                         foreach( $messages as &$value ) {
 149                                 $value[0] = wfMsgExt( $value[0], 'escapenoentities' );
 150                                 $value[1] = wfMsgExt( $value[1], 'escapenoentities' );
 151                         }
 152                 }
 153
 154                 # Inconsistent naming, bleh
 155                 $map = array(
 156                         'newpage' => 'newpage',
 157                         'minor' => 'minoredit',
 158                         'bot' => 'botedit',
 159                         'unpatrolled' => 'unpatrolled',
 160                         'minoredit' => 'minoredit',
 161                         'botedit' => 'botedit',
 162                 );
 163                 $flag = $map[$flag];
 164
 165                 return "<abbr class='$flag' title='" . $messages[$flag][1] . "'>" . $messages[$flag][0] . '</abbr>';
 166         }
 167
 168         /**
 169          * Returns text for the start of the tabular part of RC
 170          * @return String
 171          */
 172         public function beginRecentChangesList() {
 173                 $this->rc_cache = array();
 174                 $this->rcMoveIndex = 0;
 175                 $this->rcCacheIndex = 0;
 176                 $this->lastdate = '';
 177                 $this->rclistOpen = false;
 178                 return '';
 179         }
 180
 181         /**
 182          * Show formatted char difference
 183          * @param $old Integer: bytes
 184          * @param $new Integer: bytes
 185          * @return String
 186          */
 187         public static function showCharacterDifference( $old, $new ) {
 188                 global $wgRCChangedSizeThreshold, $wgLang, $wgMiserMode;
 189                 $szdiff = $new - $old;
 190
 191                 $code = $wgLang->getCode();
 192                 static $fastCharDiff = array();
 193                 if ( !isset($fastCharDiff[$code]) ) {
 194                         $fastCharDiff[$code] = $wgMiserMode || wfMsgNoTrans( 'rc-change-size' ) === '$1';
 195                 }
 196
 197                 $formattedSize = $wgLang->formatNum($szdiff);
 198
 199                 if ( !$fastCharDiff[$code] ) {
 200                         $formattedSize = wfMsgExt( 'rc-change-size', array( 'parsemag' ), $formattedSize );
 201                 }
 202
 203                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 204                         $tag = 'strong';
 205                 } else {
 206                         $tag = 'span';
 207                 }
 208
 209                 if ( $szdiff === 0 ) {
 210                         $formattedSizeClass = 'mw-plusminus-null';
 211                 }
 212                 if ( $szdiff > 0 ) {
 213                         $formattedSize = '+' . $formattedSize;
 214                         $formattedSizeClass = 'mw-plusminus-pos';
 215                 }
 216                 if ( $szdiff < 0 ) {
 217                         $formattedSizeClass = 'mw-plusminus-neg';
 218                 }
 219
 220                 $formattedTotalSize = wfMsgExt( 'nbytes', 'parsemag', $wgLang->formatNum( $new ) );
 221
 222                 return Html::element( $tag,
 223                         array( 'dir' => 'ltr', 'class' => $formattedSizeClass, 'title' => $formattedTotalSize ),
 224                         wfMessage( 'parentheses', $formattedSize )->plain() ) . $wgLang->getDirMark();
 225         }
 226
 227         /**
 228          * Returns text for the end of RC
 229          * @return String
 230          */
 231         public function endRecentChangesList() {
 232                 if( $this->rclistOpen ) {
 233                         return "</ul>\n";
 234                 } else {
 235                         return '';
 236                 }
 237         }
 238
 239         public function insertDateHeader( &$s, $rc_timestamp ) {
 240                 # Make date header if necessary
 241                 $date = $this->getLanguage()->date( $rc_timestamp, true, true );
 242                 if( $date != $this->lastdate ) {
 243                         if( $this->lastdate != '' ) {
 244                                 $s .= "</ul>\n";
 245                         }
 246                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 247                         $this->lastdate = $date;
 248                         $this->rclistOpen = true;
 249                 }
 250         }
 251
 252         public function insertLog( &$s, $title, $logtype ) {
 253                 $page = new LogPage( $logtype );
 254                 $logname = $page->getName()->escaped();
 255                 $s .= '(' . Linker::linkKnown( $title, $logname ) . ')';
 256         }
 257
 258         /**
 259          * @param $s
 260          * @param $rc RecentChange
 261          * @param $unpatrolled
 262          * @return void
 263          */
 264         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 265                 # Diff link
 266                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 267                         $diffLink = $this->message['diff'];
 268                 } elseif ( !self::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 269                         $diffLink = $this->message['diff'];
 270                 } else {
 271                         $query = array(
 272                                 'curid' => $rc->mAttribs['rc_cur_id'],
 273                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 274                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 275                         );
 276
 277                         if( $unpatrolled ) {
 278                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 279                         };
 280
 281                         $diffLink = Linker::linkKnown(
 282                                 $rc->getTitle(),
 283                                 $this->message['diff'],
 284                                 array( 'tabindex' => $rc->counter ),
 285                                 $query
 286                         );
 287                 }
 288                 $s .= '(' . $diffLink . $this->message['pipe-separator'];
 289                 # History link
 290                 $s .= Linker::linkKnown(
 291                         $rc->getTitle(),
 292                         $this->message['hist'],
 293                         array(),
 294                         array(
 295                                 'curid' => $rc->mAttribs['rc_cur_id'],
 296                                 'action' => 'history'
 297                         )
 298                 );
 299                 $s .= ') . . ';
 300         }
 301
 302         /**
 303          * @param $s
 304          * @param $rc RecentChange
 305          * @param $unpatrolled
 306          * @param $watched
 307          * @return void
 308          */
 309         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 310                 # If it's a new article, there is no diff link, but if it hasn't been
 311                 # patrolled yet, we need to give users a way to do so
 312                 $params = array();
 313
 314                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 315                         $params['rcid'] = $rc->mAttribs['rc_id'];
 316                 }
 317
 318                 $articlelink = Linker::linkKnown(
 319                         $rc->getTitle(),
 320                         null,
 321                         array(),
 322                         $params
 323                 );
 324                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 325                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 326                 }
 327                 # Bolden pages watched by this user
 328                 if( $watched ) {
 329                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 330                 }
 331                 # RTL/LTR marker
 332                 $articlelink .= $this->getLanguage()->getDirMark();
 333
 334                 wfRunHooks( 'ChangesListInsertArticleLink',
 335                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 336
 337                 $s .= " $articlelink";
 338         }
 339
 340         /**
 341          * @param $s
 342          * @param $rc RecentChange
 343          * @return void
 344          */
 345         public function insertTimestamp( &$s, $rc ) {
 346                 $s .= $this->message['semicolon-separator'] .
 347                         $this->getLanguage()->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 348         }
 349
 350         /** Insert links to user page, user talk page and eventually a blocking link
 351          *
 352          * @param $rc RecentChange
 353          */
 354         public function insertUserRelatedLinks( &$s, &$rc ) {
 355                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 356                         $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 357                 } else {
 358                         $s .= $this->getLanguage()->getDirMark() . Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 359                         $s .= Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 360                 }
 361         }
 362
 363         /** insert a formatted action
 364          *
 365          * @param $rc RecentChange
 366          */
 367         public function insertLogEntry( $rc ) {
 368                 $formatter = LogFormatter::newFromRow( $rc->mAttribs );
 369                 $formatter->setShowUserToolLinks( true );
 370                 $mark = $this->getLanguage()->getDirMark();
 371                 return $formatter->getActionText() . " $mark" . $formatter->getComment();
 372         }
 373
 374         /**
 375          * Insert a formatted comment
 376          * @param $rc RecentChange
 377          */
 378         public function insertComment( $rc ) {
 379                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 380                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 381                                 return ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 382                         } else {
 383                                 return Linker::commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 384                         }
 385                 }
 386         }
 387
 388         /**
 389          * Check whether to enable recent changes patrol features
 390          * @return Boolean
 391          */
 392         public static function usePatrol() {
 393                 global $wgUser;
 394                 return $wgUser->useRCPatrol();
 395         }
 396
 397         /**
 398          * Returns the string which indicates the number of watching users
 399          */
 400         protected function numberofWatchingusers( $count ) {
 401                 static $cache = array();
 402                 if( $count > 0 ) {
 403                         if( !isset( $cache[$count] ) ) {
 404                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 405                                         array('parsemag', 'escape' ), $this->getLanguage()->formatNum( $count ) );
 406                         }
 407                         return $cache[$count];
 408                 } else {
 409                         return '';
 410                 }
 411         }
 412
 413         /**
 414          * Determine if said field of a revision is hidden
 415          * @param $rc RCCacheEntry
 416          * @param $field Integer: one of DELETED_* bitfield constants
 417          * @return Boolean
 418          */
 419         public static function isDeleted( $rc, $field ) {
 420                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 421         }
 422
 423         /**
 424          * Determine if the current user is allowed to view a particular
 425          * field of this revision, if it's marked as deleted.
 426          * @param $rc RCCacheEntry
 427          * @param $field Integer
 428          * @param $user User object to check, or null to use $wgUser
 429          * @return Boolean
 430          */
 431         public static function userCan( $rc, $field, User $user = null ) {
 432                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 433                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 434                 } else {
 435                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 436                 }
 437         }
 438
 439         protected function maybeWatchedLink( $link, $watched = false ) {
 440                 if( $watched ) {
 441                         return '<strong class="mw-watched">' . $link . '</strong>';
 442                 } else {
 443                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 444                 }
 445         }
 446
 447         /** Inserts a rollback link
 448          *
 449          * @param $s string
 450          * @param $rc RecentChange
 451          */
 452         public function insertRollback( &$s, &$rc ) {
 453                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 454                         $page = $rc->getTitle();
 455                         /** Check for rollback and edit permissions, disallow special pages, and only
 456                           * show a link on the top-most revision */
 457                         if ( $this->getUser()->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 458                         {
 459                                 $rev = new Revision( array(
 460                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 461                                         'user'      => $rc->mAttribs['rc_user'],
 462                                         'user_text' => $rc->mAttribs['rc_user_text'],
 463                                         'deleted'   => $rc->mAttribs['rc_deleted']
 464                                 ) );
 465                                 $rev->setTitle( $page );
 466                                 $s .= ' '.Linker::generateRollback( $rev, $this->getContext() );
 467                         }
 468                 }
 469         }
 470
 471         /**
 472          * @param $s string
 473          * @param $rc RecentChange
 474          * @param $classes
 475          */
 476         public function insertTags( &$s, &$rc, &$classes ) {
 477                 if ( empty($rc->mAttribs['ts_tags']) )
 478                         return;
 479
 480                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 481                 $classes = array_merge( $classes, $newClasses );
 482                 $s .= ' ' . $tagSummary;
 483         }
 484
 485         public function insertExtra( &$s, &$rc, &$classes ) {
 486                 ## Empty, used for subclassers to add anything special.
 487         }
 488
 489         protected function showAsUnpatrolled( RecentChange $rc ) {
 490                 $unpatrolled = false;
 491                 if ( !$rc->mAttribs['rc_patrolled'] ) {
 492                         if ( $this->getUser()->useRCPatrol() ) {
 493                                 $unpatrolled = true;
 494                         } elseif ( $this->getUser()->useNPPatrol() && $rc->mAttribs['rc_new'] ) {
 495                                 $unpatrolled = true;
 496                         }
 497                 }
 498                 return $unpatrolled;
 499         }
 500 }
 501
 502
 503 /**
 504  * Generate a list of changes using the good old system (no javascript)
 505  */
 506 class OldChangesList extends ChangesList {
 507         /**
 508          * Format a line using the old system (aka without any javascript).
 509          *
 510          * @param $rc RecentChange
 511          */
 512         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 513                 global $wgRCShowChangedSize;
 514                 wfProfileIn( __METHOD__ );
 515
 516                 # Should patrol-related stuff be shown?
 517                 $unpatrolled = $this->showAsUnpatrolled( $rc );
 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 (very very old, not supported anymore)
 535                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 536                 // Log entries
 537                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 538                         $logtitle = SpecialPage::getTitleFor( 'Log', $rc->mAttribs['rc_log_type'] );
 539                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 540                 // Log entries (old format) or log targets, and special pages
 541                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 542                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 543                         if( $name == 'Log' ) {
 544                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 545                         }
 546                 // Regular entries
 547                 } else {
 548                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 549                         # M, N, b and ! (minor, new, bot and unpatrolled)
 550                         $s .= $this->recentChangesFlags(
 551                                 array(
 552                                         'newpage' => $rc->mAttribs['rc_new'],
 553                                         'minor' => $rc->mAttribs['rc_minor'],
 554                                         'unpatrolled' => $unpatrolled,
 555                                         'bot' => $rc->mAttribs['rc_bot']
 556                                 ),
 557                                 ''
 558                         );
 559                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 560                 }
 561                 # Edit/log timestamp
 562                 $this->insertTimestamp( $s, $rc );
 563                 # Bytes added or removed
 564                 if( $wgRCShowChangedSize ) {
 565                         $cd = $rc->getCharacterDifference();
 566                         if( $cd != '' ) {
 567                                 $s .= "$cd  . . ";
 568                         }
 569                 }
 570
 571                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 572                         $s .= $this->insertLogEntry( $rc );
 573                 } else {
 574                         # User tool links
 575                         $this->insertUserRelatedLinks( $s, $rc );
 576                         # LTR/RTL direction mark
 577                         $s .= $this->getLanguage()->getDirMark();
 578                         $s .= $this->insertComment( $rc );
 579                 }
 580
 581                 # Tags
 582                 $this->insertTags( $s, $rc, $classes );
 583                 # Rollback
 584                 $this->insertRollback( $s, $rc );
 585                 # For subclasses
 586                 $this->insertExtra( $s, $rc, $classes );
 587
 588                 # How many users watch this page
 589                 if( $rc->numberofWatchingusers > 0 ) {
 590                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 591                                 array( 'parsemag', 'escape' ), $this->getLanguage()->formatNum( $rc->numberofWatchingusers ) );
 592                 }
 593
 594                 if( $this->watchlist ) {
 595                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 596                 }
 597
 598                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 599
 600                 wfProfileOut( __METHOD__ );
 601                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 602         }
 603 }
 604
 605
 606 /**
 607  * Generate a list of changes using an Enhanced system (uses javascript).
 608  */
 609 class EnhancedChangesList extends ChangesList {
 610         /**
 611          * Add the JavaScript file for enhanced changeslist
 612          * @return String
 613          */
 614         public function beginRecentChangesList() {
 615                 $this->rc_cache = array();
 616                 $this->rcMoveIndex = 0;
 617                 $this->rcCacheIndex = 0;
 618                 $this->lastdate = '';
 619                 $this->rclistOpen = false;
 620                 $this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
 621                 return '';
 622         }
 623         /**
 624          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 625          *
 626          * @param $baseRC RecentChange
 627          * @param $watched bool
 628          *
 629          * @return string
 630          */
 631         public function recentChangesLine( &$baseRC, $watched = false ) {
 632                 wfProfileIn( __METHOD__ );
 633
 634                 # Create a specialised object
 635                 $rc = RCCacheEntry::newFromParent( $baseRC );
 636
 637                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 638
 639                 # If it's a new day, add the headline and flush the cache
 640                 $date = $this->getLanguage()->date( $rc->mAttribs['rc_timestamp'], true );
 641                 $ret = '';
 642                 if( $date != $this->lastdate ) {
 643                         # Process current cache
 644                         $ret = $this->recentChangesBlock();
 645                         $this->rc_cache = array();
 646                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 647                         $this->lastdate = $date;
 648                 }
 649
 650                 # Should patrol-related stuff be shown?
 651                 $rc->unpatrolled = $this->showAsUnpatrolled( $rc );
 652
 653                 $showdifflinks = true;
 654                 # Make article link
 655                 $type = $rc->mAttribs['rc_type'];
 656                 $logType = $rc->mAttribs['rc_log_type'];
 657                 // Page moves, very old style, not supported anymore
 658                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 659                 // New unpatrolled pages
 660                 } elseif( $rc->unpatrolled && $type == RC_NEW ) {
 661                         $clink = Linker::linkKnown( $rc->getTitle(), null, array(),
 662                                 array( 'rcid' => $rc->mAttribs['rc_id'] ) );
 663                 // Log entries
 664                 } elseif( $type == RC_LOG ) {
 665                         if( $logType ) {
 666                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 667                                 $logpage = new LogPage( $logType );
 668                                 $logname = $logpage->getName()->escaped();
 669                                 $clink = '(' . Linker::linkKnown( $logtitle, $logname ) . ')';
 670                         } else {
 671                                 $clink = Linker::link( $rc->getTitle() );
 672                         }
 673                         $watched = false;
 674                 // Log entries (old format) and special pages
 675                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 676                         wfDebug( "Unexpected special page in recentchanges\n" );
 677                         $clink = '';
 678                 // Edits
 679                 } else {
 680                         $clink = Linker::linkKnown( $rc->getTitle() );
 681                 }
 682
 683                 # Don't show unusable diff links
 684                 if ( !ChangesList::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 685                         $showdifflinks = false;
 686                 }
 687
 688                 $time = $this->getLanguage()->time( $rc->mAttribs['rc_timestamp'], true, true );
 689                 $rc->watched = $watched;
 690                 $rc->link = $clink;
 691                 $rc->timestamp = $time;
 692                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 693
 694                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 695                 # called too many times (50% of CPU time on RecentChanges!).
 696                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 697                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 698                 if( $rc->unpatrolled ) {
 699                         $rcIdQuery = array( 'rcid' => $rc->mAttribs['rc_id'] );
 700                 } else {
 701                         $rcIdQuery = array();
 702                 }
 703                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 704                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' =>
 705                         $lastOldid ) + $rcIdQuery;
 706
 707                 if( !$showdifflinks ) {
 708                         $curLink = $this->message['cur'];
 709                         $diffLink = $this->message['diff'];
 710                 } elseif( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 711                         if ( $type != RC_NEW ) {
 712                                 $curLink = $this->message['cur'];
 713                         } else {
 714                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 715                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 716                         }
 717                         $diffLink = $this->message['diff'];
 718                 } else {
 719                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querydiff ) );
 720                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 721                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 722                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 723                 }
 724
 725                 # Make "last" link
 726                 if( !$showdifflinks || !$lastOldid ) {
 727                         $lastLink = $this->message['last'];
 728                 } elseif( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 729                         $lastLink = $this->message['last'];
 730                 } else {
 731                         $lastLink = Linker::linkKnown( $rc->getTitle(), $this->message['last'],
 732                                 array(), $curIdEq + array('diff' => $thisOldid, 'oldid' => $lastOldid) + $rcIdQuery );
 733                 }
 734
 735                 # Make user links
 736                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 737                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 738                 } else {
 739                         $rc->userlink = Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 740                         $rc->usertalklink = Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 741                 }
 742
 743                 $rc->lastlink = $lastLink;
 744                 $rc->curlink  = $curLink;
 745                 $rc->difflink = $diffLink;
 746
 747                 # Put accumulated information into the cache, for later display
 748                 # Page moves go on their own line
 749                 $title = $rc->getTitle();
 750                 $secureName = $title->getPrefixedDBkey();
 751                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 752                         # Use an @ character to prevent collision with page names
 753                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 754                 } else {
 755                         # Logs are grouped by type
 756                         if( $type == RC_LOG ){
 757                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 758                         }
 759                         if( !isset( $this->rc_cache[$secureName] ) ) {
 760                                 $this->rc_cache[$secureName] = array();
 761                         }
 762
 763                         array_push( $this->rc_cache[$secureName], $rc );
 764                 }
 765
 766                 wfProfileOut( __METHOD__ );
 767
 768                 return $ret;
 769         }
 770
 771         /**
 772          * Enhanced RC group
 773          */
 774         protected function recentChangesBlockGroup( $block ) {
 775                 global $wgRCShowChangedSize;
 776
 777                 wfProfileIn( __METHOD__ );
 778
 779                 # Add the namespace and title of the block as part of the class
 780                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 781                         # Log entry
 782                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 783                 } else {
 784                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 785                 }
 786                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 787                         Html::openElement( 'tr' );
 788
 789                 # Collate list of users
 790                 $userlinks = array();
 791                 # Other properties
 792                 $unpatrolled = false;
 793                 $isnew = false;
 794                 $curId = $currentRevision = 0;
 795                 # Some catalyst variables...
 796                 $namehidden = true;
 797                 $allLogs = true;
 798                 foreach( $block as $rcObj ) {
 799                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 800                         if( $rcObj->mAttribs['rc_new'] ) {
 801                                 $isnew = true;
 802                         }
 803                         // If all log actions to this page were hidden, then don't
 804                         // give the name of the affected page for this block!
 805                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 806                                 $namehidden = false;
 807                         }
 808                         $u = $rcObj->userlink;
 809                         if( !isset( $userlinks[$u] ) ) {
 810                                 $userlinks[$u] = 0;
 811                         }
 812                         if( $rcObj->unpatrolled ) {
 813                                 $unpatrolled = true;
 814                         }
 815                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 816                                 $allLogs = false;
 817                         }
 818                         # Get the latest entry with a page_id and oldid
 819                         # since logs may not have these.
 820                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 821                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 822                         }
 823                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 824                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 825                         }
 826
 827                         $bot = $rcObj->mAttribs['rc_bot'];
 828                         $userlinks[$u]++;
 829                 }
 830
 831                 # Sort the list and convert to text
 832                 krsort( $userlinks );
 833                 asort( $userlinks );
 834                 $users = array();
 835                 foreach( $userlinks as $userlink => $count) {
 836                         $text = $userlink;
 837                         $text .= $this->getLanguage()->getDirMark();
 838                         if( $count > 1 ) {
 839                                 $text .= ' (' . $this->getLanguage()->formatNum( $count ) . '×)';
 840                         }
 841                         array_push( $users, $text );
 842                 }
 843
 844                 $users = ' <span class="changedby">[' .
 845                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 846
 847                 # Title for <a> tags
 848                 $expandTitle = htmlspecialchars( wfMsg( 'rc-enhanced-expand' ) );
 849                 $closeTitle = htmlspecialchars( wfMsg( 'rc-enhanced-hide' ) );
 850
 851                 $tl = "<span class='mw-collapsible-toggle'>"
 852                         . "<span class='mw-rc-openarrow'>"
 853                         . "<a href='#' title='$expandTitle'>{$this->sideArrow()}</a>"
 854                         . "</span><span class='mw-rc-closearrow'>"
 855                         . "<a href='#' title='$closeTitle'>{$this->downArrow()}</a>"
 856                         . "</span></span>";
 857                 $r .= "<td>$tl</td>";
 858
 859                 # Main line
 860                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 861                         'newpage' => $isnew,
 862                         'minor' => false,
 863                         'unpatrolled' => $unpatrolled,
 864                         'bot' => $bot ,
 865                 ) );
 866
 867                 # Timestamp
 868                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td>';
 869
 870                 # Article link
 871                 if( $namehidden ) {
 872                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 873                 } elseif( $allLogs ) {
 874                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 875                 } else {
 876                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 877                 }
 878
 879                 $r .= $this->getLanguage()->getDirMark();
 880
 881                 $queryParams['curid'] = $curId;
 882                 # Changes message
 883                 $n = count($block);
 884                 static $nchanges = array();
 885                 if ( !isset( $nchanges[$n] ) ) {
 886                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $this->getLanguage()->formatNum( $n ) );
 887                 }
 888                 # Total change link
 889                 $r .= ' ';
 890                 if( !$allLogs ) {
 891                         $r .= '(';
 892                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 893                                 $r .= $nchanges[$n];
 894                         } elseif( $isnew ) {
 895                                 $r .= $nchanges[$n];
 896                         } else {
 897                                 $params = $queryParams;
 898                                 $params['diff'] = $currentRevision;
 899                                 $params['oldid'] = $oldid;
 900
 901                                 $r .= Linker::link(
 902                                         $block[0]->getTitle(),
 903                                         $nchanges[$n],
 904                                         array(),
 905                                         $params,
 906                                         array( 'known', 'noclasses' )
 907                                 );
 908                         }
 909                 }
 910
 911                 # History
 912                 if( $allLogs ) {
 913                         // don't show history link for logs
 914                 } elseif( $namehidden || !$block[0]->getTitle()->exists() ) {
 915                         $r .= $this->message['pipe-separator'] . $this->message['hist'] . ')';
 916                 } else {
 917                         $params = $queryParams;
 918                         $params['action'] = 'history';
 919
 920                         $r .= $this->message['pipe-separator'] .
 921                                 Linker::linkKnown(
 922                                         $block[0]->getTitle(),
 923                                         $this->message['hist'],
 924                                         array(),
 925                                         $params
 926                                 ) . ')';
 927                 }
 928                 $r .= ' . . ';
 929
 930                 # Character difference (does not apply if only log items)
 931                 if( $wgRCShowChangedSize && !$allLogs ) {
 932                         $last = 0;
 933                         $first = count($block) - 1;
 934                         # Some events (like logs) have an "empty" size, so we need to skip those...
 935                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 936                                 $last++;
 937                         }
 938                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 939                                 $first--;
 940                         }
 941                         # Get net change
 942                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 943                                 $block[$last]->mAttribs['rc_new_len'] );
 944
 945                         if( $chardiff == '' ) {
 946                                 $r .= ' ';
 947                         } else {
 948                                 $r .= ' ' . $chardiff. ' . . ';
 949                         }
 950                 }
 951
 952                 $r .= $users;
 953                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 954
 955                 # Sub-entries
 956                 foreach( $block as $rcObj ) {
 957                         # Classes to apply -- TODO implement
 958                         $classes = array();
 959                         $type = $rcObj->mAttribs['rc_type'];
 960
 961                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 962                         $r .= '<tr><td></td><td class="mw-enhanced-rc">';
 963                         $r .= $this->recentChangesFlags( array(
 964                                 'newpage' => $rcObj->mAttribs['rc_new'],
 965                                 'minor' => $rcObj->mAttribs['rc_minor'],
 966                                 'unpatrolled' => $rcObj->unpatrolled,
 967                                 'bot' => $rcObj->mAttribs['rc_bot'],
 968                         ) );
 969                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
 970
 971                         $params = $queryParams;
 972
 973                         if( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 974                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 975                         }
 976
 977                         # Log timestamp
 978                         if( $type == RC_LOG ) {
 979                                 $link = $rcObj->timestamp;
 980                         # Revision link
 981                         } elseif( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 982                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
 983                         } else {
 984                                 if ( $rcObj->unpatrolled && $type == RC_NEW) {
 985                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
 986                                 }
 987
 988                                 $link = Linker::linkKnown(
 989                                                 $rcObj->getTitle(),
 990                                                 $rcObj->timestamp,
 991                                                 array(),
 992                                                 $params
 993                                         );
 994                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
 995                                         $link = '<span class="history-deleted">'.$link.'</span> ';
 996                         }
 997                         $r .= $link . '</span>';
 998
 999                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1000                                 $r .= ' (';
1001                                 $r .= $rcObj->curlink;
1002                                 $r .= $this->message['pipe-separator'];
1003                                 $r .= $rcObj->lastlink;
1004                                 $r .= ')';
1005                         }
1006                         $r .= ' . . ';
1007
1008                         # Character diff
1009                         if( $wgRCShowChangedSize && $rcObj->getCharacterDifference() ) {
1010                                 $r .= $rcObj->getCharacterDifference() . ' . . ' ;
1011                         }
1012
1013                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
1014                                 $r .= $this->insertLogEntry( $rcObj );
1015                         } else {
1016                                 # User links
1017                                 $r .= $rcObj->userlink;
1018                                 $r .= $rcObj->usertalklink;
1019                                 $r .= $this->insertComment( $rcObj );
1020                         }
1021
1022                         # Rollback
1023                         $this->insertRollback( $r, $rcObj );
1024                         # Tags
1025                         $this->insertTags( $r, $rcObj, $classes );
1026
1027                         $r .= "</td></tr>\n";
1028                 }
1029                 $r .= "</table>\n";
1030
1031                 $this->rcCacheIndex++;
1032
1033                 wfProfileOut( __METHOD__ );
1034
1035                 return $r;
1036         }
1037
1038         /**
1039          * Generate HTML for an arrow or placeholder graphic
1040          * @param $dir String: one of '', 'd', 'l', 'r'
1041          * @param $alt String: text
1042          * @param $title String: text
1043          * @return String: HTML <img> tag
1044          */
1045         protected function arrow( $dir, $alt='', $title='' ) {
1046                 global $wgStylePath;
1047                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1048                 $encAlt = htmlspecialchars( $alt );
1049                 $encTitle = htmlspecialchars( $title );
1050                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1051         }
1052
1053         /**
1054          * Generate HTML for a right- or left-facing arrow,
1055          * depending on language direction.
1056          * @return String: HTML <img> tag
1057          */
1058         protected function sideArrow() {
1059                 global $wgLang;
1060                 $dir = $wgLang->isRTL() ? 'l' : 'r';
1061                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1062         }
1063
1064         /**
1065          * Generate HTML for a down-facing arrow
1066          * depending on language direction.
1067          * @return String: HTML <img> tag
1068          */
1069         protected function downArrow() {
1070                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1071         }
1072
1073         /**
1074          * Generate HTML for a spacer image
1075          * @return String: HTML <img> tag
1076          */
1077         protected function spacerArrow() {
1078                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1079         }
1080
1081         /**
1082          * Enhanced RC ungrouped line.
1083          *
1084          * @param $rcObj RecentChange
1085          * @return String: a HTML formatted line (generated using $r)
1086          */
1087         protected function recentChangesBlockLine( $rcObj ) {
1088                 global $wgRCShowChangedSize;
1089
1090                 wfProfileIn( __METHOD__ );
1091                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1092
1093                 $type = $rcObj->mAttribs['rc_type'];
1094                 $logType = $rcObj->mAttribs['rc_log_type'];
1095                 if( $logType ) {
1096                         # Log entry
1097                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1098                 } else {
1099                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1100                 }
1101                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1102                         Html::openElement( 'tr' );
1103
1104                 $r .= '<td class="mw-enhanced-rc">' . $this->spacerArrow();
1105                 # Flag and Timestamp
1106                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1107                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1108                 } else {
1109                         $r .= $this->recentChangesFlags( array(
1110                                 'newpage' => $type == RC_NEW,
1111                                 'minor' => $rcObj->mAttribs['rc_minor'],
1112                                 'unpatrolled' => $rcObj->unpatrolled,
1113                                 'bot' => $rcObj->mAttribs['rc_bot'],
1114                         ) );
1115                 }
1116                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td>';
1117                 # Article or log link
1118                 if( $logType ) {
1119                         $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
1120                         $logname = LogPage::logName( $logType );
1121                         $r .= '(' . Linker::linkKnown( $logtitle, htmlspecialchars( $logname ) ) . ')';
1122                 } else {
1123                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1124                 }
1125                 # Diff and hist links
1126                 if ( $type != RC_LOG ) {
1127                         $r .= ' ('. $rcObj->difflink . $this->message['pipe-separator'];
1128                         $query['action'] = 'history';
1129                         $r .= Linker::linkKnown(
1130                                 $rcObj->getTitle(),
1131                                 $this->message['hist'],
1132                                 array(),
1133                                 $query
1134                         ) . ')';
1135                 }
1136                 $r .= ' . . ';
1137                 # Character diff
1138                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1139                         $r .= "$cd . . ";
1140                 }
1141
1142                 if ( $type == RC_LOG ) {
1143                         $r .= $this->insertLogEntry( $rcObj );
1144                 } else {
1145                         $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1146                         $r .= $this->insertComment( $rcObj );
1147                         $r .= $this->insertRollback( $r, $rcObj );
1148                 }
1149
1150                 # Tags
1151                 $classes = explode( ' ', $classes );
1152                 $this->insertTags( $r, $rcObj, $classes );
1153                 # Show how many people are watching this if enabled
1154                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1155
1156                 $r .= "</td></tr></table>\n";
1157
1158                 wfProfileOut( __METHOD__ );
1159
1160                 return $r;
1161         }
1162
1163         /**
1164          * If enhanced RC is in use, this function takes the previously cached
1165          * RC lines, arranges them, and outputs the HTML
1166          *
1167          * @return string
1168          */
1169         protected function recentChangesBlock() {
1170                 if( count ( $this->rc_cache ) == 0 ) {
1171                         return '';
1172                 }
1173
1174                 wfProfileIn( __METHOD__ );
1175
1176                 $blockOut = '';
1177                 foreach( $this->rc_cache as $block ) {
1178                         if( count( $block ) < 2 ) {
1179                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1180                         } else {
1181                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1182                         }
1183                 }
1184
1185                 wfProfileOut( __METHOD__ );
1186
1187                 return '<div>'.$blockOut.'</div>';
1188         }
1189
1190         /**
1191          * Returns text for the end of RC
1192          * If enhanced RC is in use, returns pretty much all the text
1193          */
1194         public function endRecentChangesList() {
1195                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1196         }
1197
1198 }