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 string|User 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( 'rc-change-size-new', '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 .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $title, $logname ) )->escaped();
 256         }
 257
 258         /**
 259          * @param $s
 260          * @param $rc RecentChange
 261          * @param $unpatrolled
 262          */
 263         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 264                 # Diff link
 265                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 266                         $diffLink = $this->message['diff'];
 267                 } elseif ( !self::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 268                         $diffLink = $this->message['diff'];
 269                 } else {
 270                         $query = array(
 271                                 'curid' => $rc->mAttribs['rc_cur_id'],
 272                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 273                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 274                         );
 275
 276                         if( $unpatrolled ) {
 277                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 278                         };
 279
 280                         $diffLink = Linker::linkKnown(
 281                                 $rc->getTitle(),
 282                                 $this->message['diff'],
 283                                 array( 'tabindex' => $rc->counter ),
 284                                 $query
 285                         );
 286                 }
 287                 $diffhist = $diffLink . $this->message['pipe-separator'];
 288                 # History link
 289                 $diffhist .= Linker::linkKnown(
 290                         $rc->getTitle(),
 291                         $this->message['hist'],
 292                         array(),
 293                         array(
 294                                 'curid' => $rc->mAttribs['rc_cur_id'],
 295                                 'action' => 'history'
 296                         )
 297                 );
 298                 $s .= $this->msg( 'parentheses' )->rawParams( $diffhist )->escaped() . ' . . ';
 299         }
 300
 301         /**
 302          * @param $s
 303          * @param $rc RecentChange
 304          * @param $unpatrolled
 305          * @param $watched
 306          */
 307         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 308                 # If it's a new article, there is no diff link, but if it hasn't been
 309                 # patrolled yet, we need to give users a way to do so
 310                 $params = array();
 311
 312                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 313                         $params['rcid'] = $rc->mAttribs['rc_id'];
 314                 }
 315
 316                 $articlelink = Linker::linkKnown(
 317                         $rc->getTitle(),
 318                         null,
 319                         array(),
 320                         $params
 321                 );
 322                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 323                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 324                 }
 325                 # Bolden pages watched by this user
 326                 if( $watched ) {
 327                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 328                 }
 329                 # RTL/LTR marker
 330                 $articlelink .= $this->getLanguage()->getDirMark();
 331
 332                 wfRunHooks( 'ChangesListInsertArticleLink',
 333                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 334
 335                 $s .= " $articlelink";
 336         }
 337
 338         /**
 339          * @param $s
 340          * @param $rc RecentChange
 341          */
 342         public function insertTimestamp( &$s, $rc ) {
 343                 $s .= $this->message['semicolon-separator'] .
 344                         $this->getLanguage()->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 345         }
 346
 347         /**
 348          * Insert links to user page, user talk page and eventually a blocking link
 349          *
 350          * @param &$s String HTML to update
 351          * @param &$rc RecentChange
 352          */
 353         public function insertUserRelatedLinks( &$s, &$rc ) {
 354                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 355                         $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 356                 } else {
 357                         $s .= $this->getLanguage()->getDirMark() . Linker::userLink( $rc->mAttribs['rc_user'],
 358                                 $rc->mAttribs['rc_user_text'] );
 359                         $s .= Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 360                 }
 361         }
 362
 363         /**
 364          * Insert a formatted action
 365          *
 366          * @param $rc RecentChange
 367          * @return string
 368          */
 369         public function insertLogEntry( $rc ) {
 370                 $formatter = LogFormatter::newFromRow( $rc->mAttribs );
 371                 $formatter->setShowUserToolLinks( true );
 372                 $mark = $this->getLanguage()->getDirMark();
 373                 return $formatter->getActionText() . " $mark" . $formatter->getComment();
 374         }
 375
 376         /**
 377          * Insert a formatted comment
 378          * @param $rc RecentChange
 379          * @return string
 380          */
 381         public function insertComment( $rc ) {
 382                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 383                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 384                                 return ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 385                         } else {
 386                                 return Linker::commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 387                         }
 388                 }
 389         }
 390
 391         /**
 392          * Check whether to enable recent changes patrol features
 393          * @return Boolean
 394          */
 395         public static function usePatrol() {
 396                 global $wgUser;
 397                 return $wgUser->useRCPatrol();
 398         }
 399
 400         /**
 401          * Returns the string which indicates the number of watching users
 402          * @return string
 403          */
 404         protected function numberofWatchingusers( $count ) {
 405                 static $cache = array();
 406                 if( $count > 0 ) {
 407                         if( !isset( $cache[$count] ) ) {
 408                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 409                                         array('parsemag', 'escape' ), $this->getLanguage()->formatNum( $count ) );
 410                         }
 411                         return $cache[$count];
 412                 } else {
 413                         return '';
 414                 }
 415         }
 416
 417         /**
 418          * Determine if said field of a revision is hidden
 419          * @param $rc RCCacheEntry
 420          * @param $field Integer: one of DELETED_* bitfield constants
 421          * @return Boolean
 422          */
 423         public static function isDeleted( $rc, $field ) {
 424                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 425         }
 426
 427         /**
 428          * Determine if the current user is allowed to view a particular
 429          * field of this revision, if it's marked as deleted.
 430          * @param $rc RCCacheEntry
 431          * @param $field Integer
 432          * @param $user User object to check, or null to use $wgUser
 433          * @return Boolean
 434          */
 435         public static function userCan( $rc, $field, User $user = null ) {
 436                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 437                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 438                 } else {
 439                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 440                 }
 441         }
 442
 443         /**
 444          * @param $link string
 445          * @param $watched bool
 446          * @return string
 447          */
 448         protected function maybeWatchedLink( $link, $watched = false ) {
 449                 if( $watched ) {
 450                         return '<strong class="mw-watched">' . $link . '</strong>';
 451                 } else {
 452                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 453                 }
 454         }
 455
 456         /** Inserts a rollback link
 457          *
 458          * @param $s string
 459          * @param $rc RecentChange
 460          */
 461         public function insertRollback( &$s, &$rc ) {
 462                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 463                         $page = $rc->getTitle();
 464                         /** Check for rollback and edit permissions, disallow special pages, and only
 465                           * show a link on the top-most revision */
 466                         if ( $this->getUser()->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 467                         {
 468                                 $rev = new Revision( array(
 469                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 470                                         'user'      => $rc->mAttribs['rc_user'],
 471                                         'user_text' => $rc->mAttribs['rc_user_text'],
 472                                         'deleted'   => $rc->mAttribs['rc_deleted']
 473                                 ) );
 474                                 $rev->setTitle( $page );
 475                                 $s .= ' '.Linker::generateRollback( $rev, $this->getContext() );
 476                         }
 477                 }
 478         }
 479
 480         /**
 481          * @param $s string
 482          * @param $rc RecentChange
 483          * @param $classes
 484          */
 485         public function insertTags( &$s, &$rc, &$classes ) {
 486                 if ( empty($rc->mAttribs['ts_tags']) )
 487                         return;
 488
 489                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 490                 $classes = array_merge( $classes, $newClasses );
 491                 $s .= ' ' . $tagSummary;
 492         }
 493
 494         public function insertExtra( &$s, &$rc, &$classes ) {
 495                 ## Empty, used for subclassers to add anything special.
 496         }
 497
 498         protected function showAsUnpatrolled( RecentChange $rc ) {
 499                 $unpatrolled = false;
 500                 if ( !$rc->mAttribs['rc_patrolled'] ) {
 501                         if ( $this->getUser()->useRCPatrol() ) {
 502                                 $unpatrolled = true;
 503                         } elseif ( $this->getUser()->useNPPatrol() && $rc->mAttribs['rc_new'] ) {
 504                                 $unpatrolled = true;
 505                         }
 506                 }
 507                 return $unpatrolled;
 508         }
 509 }
 510
 511
 512 /**
 513  * Generate a list of changes using the good old system (no javascript)
 514  */
 515 class OldChangesList extends ChangesList {
 516         /**
 517          * Format a line using the old system (aka without any javascript).
 518          *
 519          * @param $rc RecentChange
 520          * @return string
 521          */
 522         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 523                 global $wgRCShowChangedSize;
 524                 wfProfileIn( __METHOD__ );
 525
 526                 # Should patrol-related stuff be shown?
 527                 $unpatrolled = $this->showAsUnpatrolled( $rc );
 528
 529                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 530                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 531
 532                 $s = '';
 533                 $classes = array();
 534                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 535                 if( $linenumber ) {
 536                         if( $linenumber & 1 ) {
 537                                 $classes[] = 'mw-line-odd';
 538                         }
 539                         else {
 540                                 $classes[] = 'mw-line-even';
 541                         }
 542                 }
 543
 544                 // Moved pages (very very old, not supported anymore)
 545                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 546                 // Log entries
 547                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 548                         $logtitle = SpecialPage::getTitleFor( 'Log', $rc->mAttribs['rc_log_type'] );
 549                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 550                 // Log entries (old format) or log targets, and special pages
 551                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 552                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 553                         if( $name == 'Log' ) {
 554                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 555                         }
 556                 // Regular entries
 557                 } else {
 558                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 559                         # M, N, b and ! (minor, new, bot and unpatrolled)
 560                         $s .= $this->recentChangesFlags(
 561                                 array(
 562                                         'newpage' => $rc->mAttribs['rc_new'],
 563                                         'minor' => $rc->mAttribs['rc_minor'],
 564                                         'unpatrolled' => $unpatrolled,
 565                                         'bot' => $rc->mAttribs['rc_bot']
 566                                 ),
 567                                 ''
 568                         );
 569                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 570                 }
 571                 # Edit/log timestamp
 572                 $this->insertTimestamp( $s, $rc );
 573                 # Bytes added or removed
 574                 if( $wgRCShowChangedSize ) {
 575                         $cd = $rc->getCharacterDifference();
 576                         if( $cd != '' ) {
 577                                 $s .= "$cd  . . ";
 578                         }
 579                 }
 580
 581                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 582                         $s .= $this->insertLogEntry( $rc );
 583                 } else {
 584                         # User tool links
 585                         $this->insertUserRelatedLinks( $s, $rc );
 586                         # LTR/RTL direction mark
 587                         $s .= $this->getLanguage()->getDirMark();
 588                         $s .= $this->insertComment( $rc );
 589                 }
 590
 591                 # Tags
 592                 $this->insertTags( $s, $rc, $classes );
 593                 # Rollback
 594                 $this->insertRollback( $s, $rc );
 595                 # For subclasses
 596                 $this->insertExtra( $s, $rc, $classes );
 597
 598                 # How many users watch this page
 599                 if( $rc->numberofWatchingusers > 0 ) {
 600                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 601                                 array( 'parsemag', 'escape' ), $this->getLanguage()->formatNum( $rc->numberofWatchingusers ) );
 602                 }
 603
 604                 if( $this->watchlist ) {
 605                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 606                 }
 607
 608                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 609
 610                 wfProfileOut( __METHOD__ );
 611                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 612         }
 613 }
 614
 615
 616 /**
 617  * Generate a list of changes using an Enhanced system (uses javascript).
 618  */
 619 class EnhancedChangesList extends ChangesList {
 620
 621         protected $rc_cache;
 622
 623         /**
 624          * Add the JavaScript file for enhanced changeslist
 625          * @return String
 626          */
 627         public function beginRecentChangesList() {
 628                 $this->rc_cache = array();
 629                 $this->rcMoveIndex = 0;
 630                 $this->rcCacheIndex = 0;
 631                 $this->lastdate = '';
 632                 $this->rclistOpen = false;
 633                 $this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
 634                 return '';
 635         }
 636         /**
 637          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 638          *
 639          * @param $baseRC RecentChange
 640          * @param $watched bool
 641          *
 642          * @return string
 643          */
 644         public function recentChangesLine( &$baseRC, $watched = false ) {
 645                 wfProfileIn( __METHOD__ );
 646
 647                 # Create a specialised object
 648                 $rc = RCCacheEntry::newFromParent( $baseRC );
 649
 650                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 651
 652                 # If it's a new day, add the headline and flush the cache
 653                 $date = $this->getLanguage()->date( $rc->mAttribs['rc_timestamp'], true );
 654                 $ret = '';
 655                 if( $date != $this->lastdate ) {
 656                         # Process current cache
 657                         $ret = $this->recentChangesBlock();
 658                         $this->rc_cache = array();
 659                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 660                         $this->lastdate = $date;
 661                 }
 662
 663                 # Should patrol-related stuff be shown?
 664                 $rc->unpatrolled = $this->showAsUnpatrolled( $rc );
 665
 666                 $showdifflinks = true;
 667                 # Make article link
 668                 $type = $rc->mAttribs['rc_type'];
 669                 $logType = $rc->mAttribs['rc_log_type'];
 670                 // Page moves, very old style, not supported anymore
 671                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 672                 // New unpatrolled pages
 673                 } elseif( $rc->unpatrolled && $type == RC_NEW ) {
 674                         $clink = Linker::linkKnown( $rc->getTitle(), null, array(),
 675                                 array( 'rcid' => $rc->mAttribs['rc_id'] ) );
 676                 // Log entries
 677                 } elseif( $type == RC_LOG ) {
 678                         if( $logType ) {
 679                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 680                                 $logpage = new LogPage( $logType );
 681                                 $logname = $logpage->getName()->escaped();
 682                                 $clink = $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logtitle, $logname ) )->escaped();
 683                         } else {
 684                                 $clink = Linker::link( $rc->getTitle() );
 685                         }
 686                         $watched = false;
 687                 // Log entries (old format) and special pages
 688                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 689                         wfDebug( "Unexpected special page in recentchanges\n" );
 690                         $clink = '';
 691                 // Edits
 692                 } else {
 693                         $clink = Linker::linkKnown( $rc->getTitle() );
 694                 }
 695
 696                 # Don't show unusable diff links
 697                 if ( !ChangesList::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 698                         $showdifflinks = false;
 699                 }
 700
 701                 $time = $this->getLanguage()->time( $rc->mAttribs['rc_timestamp'], true, true );
 702                 $rc->watched = $watched;
 703                 $rc->link = $clink;
 704                 $rc->timestamp = $time;
 705                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 706
 707                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 708                 # called too many times (50% of CPU time on RecentChanges!).
 709                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 710                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 711                 if( $rc->unpatrolled ) {
 712                         $rcIdQuery = array( 'rcid' => $rc->mAttribs['rc_id'] );
 713                 } else {
 714                         $rcIdQuery = array();
 715                 }
 716                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 717                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' =>
 718                         $lastOldid ) + $rcIdQuery;
 719
 720                 if( !$showdifflinks ) {
 721                         $curLink = $this->message['cur'];
 722                         $diffLink = $this->message['diff'];
 723                 } elseif( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 724                         if ( $type != RC_NEW ) {
 725                                 $curLink = $this->message['cur'];
 726                         } else {
 727                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 728                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 729                         }
 730                         $diffLink = $this->message['diff'];
 731                 } else {
 732                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querydiff ) );
 733                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 734                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 735                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 736                 }
 737
 738                 # Make "last" link
 739                 if( !$showdifflinks || !$lastOldid ) {
 740                         $lastLink = $this->message['last'];
 741                 } elseif( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 742                         $lastLink = $this->message['last'];
 743                 } else {
 744                         $lastLink = Linker::linkKnown( $rc->getTitle(), $this->message['last'],
 745                                 array(), $curIdEq + array('diff' => $thisOldid, 'oldid' => $lastOldid) + $rcIdQuery );
 746                 }
 747
 748                 # Make user links
 749                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 750                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 751                 } else {
 752                         $rc->userlink = Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 753                         $rc->usertalklink = Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 754                 }
 755
 756                 $rc->lastlink = $lastLink;
 757                 $rc->curlink  = $curLink;
 758                 $rc->difflink = $diffLink;
 759
 760                 # Put accumulated information into the cache, for later display
 761                 # Page moves go on their own line
 762                 $title = $rc->getTitle();
 763                 $secureName = $title->getPrefixedDBkey();
 764                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 765                         # Use an @ character to prevent collision with page names
 766                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 767                 } else {
 768                         # Logs are grouped by type
 769                         if( $type == RC_LOG ){
 770                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 771                         }
 772                         if( !isset( $this->rc_cache[$secureName] ) ) {
 773                                 $this->rc_cache[$secureName] = array();
 774                         }
 775
 776                         array_push( $this->rc_cache[$secureName], $rc );
 777                 }
 778
 779                 wfProfileOut( __METHOD__ );
 780
 781                 return $ret;
 782         }
 783
 784         /**
 785          * Enhanced RC group
 786          * @return string
 787          */
 788         protected function recentChangesBlockGroup( $block ) {
 789                 global $wgRCShowChangedSize;
 790
 791                 wfProfileIn( __METHOD__ );
 792
 793                 # Add the namespace and title of the block as part of the class
 794                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 795                         # Log entry
 796                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-'
 797                                         . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 798                 } else {
 799                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns'
 800                                         . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 801                 }
 802                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 803                         Html::openElement( 'tr' );
 804
 805                 # Collate list of users
 806                 $userlinks = array();
 807                 # Other properties
 808                 $unpatrolled = false;
 809                 $isnew = false;
 810                 $curId = $currentRevision = 0;
 811                 # Some catalyst variables...
 812                 $namehidden = true;
 813                 $allLogs = true;
 814                 foreach( $block as $rcObj ) {
 815                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 816                         if( $rcObj->mAttribs['rc_new'] ) {
 817                                 $isnew = true;
 818                         }
 819                         // If all log actions to this page were hidden, then don't
 820                         // give the name of the affected page for this block!
 821                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 822                                 $namehidden = false;
 823                         }
 824                         $u = $rcObj->userlink;
 825                         if( !isset( $userlinks[$u] ) ) {
 826                                 $userlinks[$u] = 0;
 827                         }
 828                         if( $rcObj->unpatrolled ) {
 829                                 $unpatrolled = true;
 830                         }
 831                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 832                                 $allLogs = false;
 833                         }
 834                         # Get the latest entry with a page_id and oldid
 835                         # since logs may not have these.
 836                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 837                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 838                         }
 839                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 840                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 841                         }
 842
 843                         $bot = $rcObj->mAttribs['rc_bot'];
 844                         $userlinks[$u]++;
 845                 }
 846
 847                 # Sort the list and convert to text
 848                 krsort( $userlinks );
 849                 asort( $userlinks );
 850                 $users = array();
 851                 foreach( $userlinks as $userlink => $count) {
 852                         $text = $userlink;
 853                         $text .= $this->getLanguage()->getDirMark();
 854                         if( $count > 1 ) {
 855                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->formatNum( $count ) . '×' )->escaped();
 856                         }
 857                         array_push( $users, $text );
 858                 }
 859
 860                 $users = ' <span class="changedby">[' .
 861                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 862
 863                 $tl = '<span class="mw-collapsible-toggle mw-enhancedchanges-arrow"></span>';
 864                 $r .= "<td>$tl</td>";
 865
 866                 # Main line
 867                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 868                         'newpage' => $isnew,
 869                         'minor' => false,
 870                         'unpatrolled' => $unpatrolled,
 871                         'bot' => $bot ,
 872                 ) );
 873
 874                 # Timestamp
 875                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td>';
 876
 877                 # Article link
 878                 if( $namehidden ) {
 879                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 880                 } elseif( $allLogs ) {
 881                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 882                 } else {
 883                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 884                 }
 885
 886                 $r .= $this->getLanguage()->getDirMark();
 887
 888                 $queryParams['curid'] = $curId;
 889                 # Changes message
 890                 $n = count($block);
 891                 static $nchanges = array();
 892                 if ( !isset( $nchanges[$n] ) ) {
 893                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $this->getLanguage()->formatNum( $n ) );
 894                 }
 895                 # Total change link
 896                 $r .= ' ';
 897                 $logtext = '';
 898                 if( !$allLogs ) {
 899                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 900                                 $logtext .= $nchanges[$n];
 901                         } elseif( $isnew ) {
 902                                 $logtext .= $nchanges[$n];
 903                         } else {
 904                                 $params = $queryParams;
 905                                 $params['diff'] = $currentRevision;
 906                                 $params['oldid'] = $oldid;
 907
 908                                 $logtext .= Linker::link(
 909                                         $block[0]->getTitle(),
 910                                         $nchanges[$n],
 911                                         array(),
 912                                         $params,
 913                                         array( 'known', 'noclasses' )
 914                                 );
 915                         }
 916                 }
 917
 918                 # History
 919                 if( $allLogs ) {
 920                         // don't show history link for logs
 921                 } elseif( $namehidden || !$block[0]->getTitle()->exists() ) {
 922                         $logtext .= $this->message['pipe-separator'] . $this->message['hist'];
 923                 } else {
 924                         $params = $queryParams;
 925                         $params['action'] = 'history';
 926
 927                         $logtext .= $this->message['pipe-separator'] .
 928                                 Linker::linkKnown(
 929                                         $block[0]->getTitle(),
 930                                         $this->message['hist'],
 931                                         array(),
 932                                         $params
 933                                 );
 934                 }
 935
 936                 if( $logtext !== '' ) {
 937                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 938                 }
 939
 940                 $r .= ' . . ';
 941
 942                 # Character difference (does not apply if only log items)
 943                 if( $wgRCShowChangedSize && !$allLogs ) {
 944                         $last = 0;
 945                         $first = count($block) - 1;
 946                         # Some events (like logs) have an "empty" size, so we need to skip those...
 947                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 948                                 $last++;
 949                         }
 950                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 951                                 $first--;
 952                         }
 953                         # Get net change
 954                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 955                                 $block[$last]->mAttribs['rc_new_len'] );
 956
 957                         if( $chardiff == '' ) {
 958                                 $r .= ' ';
 959                         } else {
 960                                 $r .= ' ' . $chardiff. ' . . ';
 961                         }
 962                 }
 963
 964                 $r .= $users;
 965                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 966
 967                 # Sub-entries
 968                 foreach( $block as $rcObj ) {
 969                         # Classes to apply -- TODO implement
 970                         $classes = array();
 971                         $type = $rcObj->mAttribs['rc_type'];
 972
 973                         $r .= '<tr><td></td><td class="mw-enhanced-rc">';
 974                         $r .= $this->recentChangesFlags( array(
 975                                 'newpage' => $rcObj->mAttribs['rc_new'],
 976                                 'minor' => $rcObj->mAttribs['rc_minor'],
 977                                 'unpatrolled' => $rcObj->unpatrolled,
 978                                 'bot' => $rcObj->mAttribs['rc_bot'],
 979                         ) );
 980                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
 981
 982                         $params = $queryParams;
 983
 984                         if( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 985                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 986                         }
 987
 988                         # Log timestamp
 989                         if( $type == RC_LOG ) {
 990                                 $link = $rcObj->timestamp;
 991                         # Revision link
 992                         } elseif( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 993                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
 994                         } else {
 995                                 if ( $rcObj->unpatrolled && $type == RC_NEW) {
 996                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
 997                                 }
 998
 999                                 $link = Linker::linkKnown(
1000                                                 $rcObj->getTitle(),
1001                                                 $rcObj->timestamp,
1002                                                 array(),
1003                                                 $params
1004                                         );
1005                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
1006                                         $link = '<span class="history-deleted">'.$link.'</span> ';
1007                         }
1008                         $r .= $link . '</span>';
1009
1010                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1011                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->curlink . $this->message['pipe-separator'] . $rcObj->lastlink )->escaped();
1012                         }
1013                         $r .= ' . . ';
1014
1015                         # Character diff
1016                         if( $wgRCShowChangedSize && $rcObj->getCharacterDifference() ) {
1017                                 $r .= $rcObj->getCharacterDifference() . ' . . ' ;
1018                         }
1019
1020                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
1021                                 $r .= $this->insertLogEntry( $rcObj );
1022                         } else {
1023                                 # User links
1024                                 $r .= $rcObj->userlink;
1025                                 $r .= $rcObj->usertalklink;
1026                                 $r .= $this->insertComment( $rcObj );
1027                         }
1028
1029                         # Rollback
1030                         $this->insertRollback( $r, $rcObj );
1031                         # Tags
1032                         $this->insertTags( $r, $rcObj, $classes );
1033
1034                         $r .= "</td></tr>\n";
1035                 }
1036                 $r .= "</table>\n";
1037
1038                 $this->rcCacheIndex++;
1039
1040                 wfProfileOut( __METHOD__ );
1041
1042                 return $r;
1043         }
1044
1045         /**
1046          * Generate HTML for an arrow or placeholder graphic
1047          * @param $dir String: one of '', 'd', 'l', 'r'
1048          * @param $alt String: text
1049          * @param $title String: text
1050          * @return String: HTML <img> tag
1051          */
1052         protected function arrow( $dir, $alt='', $title='' ) {
1053                 global $wgStylePath;
1054                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1055                 $encAlt = htmlspecialchars( $alt );
1056                 $encTitle = htmlspecialchars( $title );
1057                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1058         }
1059
1060         /**
1061          * Generate HTML for a right- or left-facing arrow,
1062          * depending on language direction.
1063          * @return String: HTML <img> tag
1064          */
1065         protected function sideArrow() {
1066                 global $wgLang;
1067                 $dir = $wgLang->isRTL() ? 'l' : 'r';
1068                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1069         }
1070
1071         /**
1072          * Generate HTML for a down-facing arrow
1073          * depending on language direction.
1074          * @return String: HTML <img> tag
1075          */
1076         protected function downArrow() {
1077                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1078         }
1079
1080         /**
1081          * Generate HTML for a spacer image
1082          * @return String: HTML <img> tag
1083          */
1084         protected function spacerArrow() {
1085                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1086         }
1087
1088         /**
1089          * Enhanced RC ungrouped line.
1090          *
1091          * @param $rcObj RecentChange
1092          * @return String: a HTML formatted line (generated using $r)
1093          */
1094         protected function recentChangesBlockLine( $rcObj ) {
1095                 global $wgRCShowChangedSize;
1096
1097                 wfProfileIn( __METHOD__ );
1098                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1099
1100                 $type = $rcObj->mAttribs['rc_type'];
1101                 $logType = $rcObj->mAttribs['rc_log_type'];
1102                 if( $logType ) {
1103                         # Log entry
1104                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-'
1105                                         . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1106                 } else {
1107                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' .
1108                                         $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1109                 }
1110                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1111                         Html::openElement( 'tr' );
1112
1113                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
1114                 # Flag and Timestamp
1115                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1116                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1117                 } else {
1118                         $r .= $this->recentChangesFlags( array(
1119                                 'newpage' => $type == RC_NEW,
1120                                 'minor' => $rcObj->mAttribs['rc_minor'],
1121                                 'unpatrolled' => $rcObj->unpatrolled,
1122                                 'bot' => $rcObj->mAttribs['rc_bot'],
1123                         ) );
1124                 }
1125                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td>';
1126                 # Article or log link
1127                 if( $logType ) {
1128                         $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
1129                         $logname = LogPage::logName( $logType );
1130                         $r .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logtitle, htmlspecialchars( $logname ) ) )->escaped();
1131                 } else {
1132                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1133                 }
1134                 # Diff and hist links
1135                 if ( $type != RC_LOG ) {
1136                         $query['action'] = 'history';
1137                         $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
1138                                 $rcObj->getTitle(),
1139                                 $this->message['hist'],
1140                                 array(),
1141                                 $query
1142                         ) )->escaped();
1143                 }
1144                 $r .= ' . . ';
1145                 # Character diff
1146                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1147                         $r .= "$cd . . ";
1148                 }
1149
1150                 if ( $type == RC_LOG ) {
1151                         $r .= $this->insertLogEntry( $rcObj );
1152                 } else {
1153                         $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1154                         $r .= $this->insertComment( $rcObj );
1155                         $r .= $this->insertRollback( $r, $rcObj );
1156                 }
1157
1158                 # Tags
1159                 $classes = explode( ' ', $classes );
1160                 $this->insertTags( $r, $rcObj, $classes );
1161                 # Show how many people are watching this if enabled
1162                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1163
1164                 $r .= "</td></tr></table>\n";
1165
1166                 wfProfileOut( __METHOD__ );
1167
1168                 return $r;
1169         }
1170
1171         /**
1172          * If enhanced RC is in use, this function takes the previously cached
1173          * RC lines, arranges them, and outputs the HTML
1174          *
1175          * @return string
1176          */
1177         protected function recentChangesBlock() {
1178                 if( count ( $this->rc_cache ) == 0 ) {
1179                         return '';
1180                 }
1181
1182                 wfProfileIn( __METHOD__ );
1183
1184                 $blockOut = '';
1185                 foreach( $this->rc_cache as $block ) {
1186                         if( count( $block ) < 2 ) {
1187                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1188                         } else {
1189                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1190                         }
1191                 }
1192
1193                 wfProfileOut( __METHOD__ );
1194
1195                 return '<div>'.$blockOut.'</div>';
1196         }
1197
1198         /**
1199          * Returns text for the end of RC
1200          * If enhanced RC is in use, returns pretty much all the text
1201          * @return string
1202          */
1203         public function endRecentChangesList() {
1204                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1205         }
1206
1207 }