includes/ChangesList.php

   1 <?php
   2 /**
   3  * Classes to show various lists of changes:
   4  * - watchlist
   5  * - related changes
   6  * - recent changes
   7  *
   8  * @file
   9  */
  10
  11 /**
  12  * @todo document
  13  */
  14 class RCCacheEntry extends RecentChange {
  15         var $secureName, $link;
  16         var $curlink , $difflink, $lastlink, $usertalklink, $versionlink;
  17         var $userlink, $timestamp, $watched;
  18
  19         /**
  20          * @param $rc RecentChange
  21          * @return RCCacheEntry
  22          */
  23         static function newFromParent( $rc ) {
  24                 $rc2 = new RCCacheEntry;
  25                 $rc2->mAttribs = $rc->mAttribs;
  26                 $rc2->mExtra = $rc->mExtra;
  27                 return $rc2;
  28         }
  29 }
  30
  31 /**
  32  * Base class for all changes lists
  33  */
  34 class ChangesList {
  35
  36         /**
  37          * @var Skin
  38          */
  39         public $skin;
  40
  41         protected $watchlist = false;
  42
  43         protected $message;
  44
  45         /**
  46         * Changeslist contructor
  47         * @param $skin Skin
  48         */
  49         public function __construct( $skin ) {
  50                 $this->skin = $skin;
  51                 $this->preCacheMessages();
  52         }
  53
  54         /**
  55          * Fetch an appropriate changes list class for the specified user
  56          * Some users might want to use an enhanced list format, for instance
  57          *
  58          * @param $user User to fetch the list class for
  59          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  60          */
  61         public static function newFromUser( $user ) {
  62                 global $wgRequest;
  63
  64                 $sk = $user->getSkin();
  65                 $list = null;
  66                 if( wfRunHooks( 'FetchChangesList', array( $user, &$sk, &$list ) ) ) {
  67                         $new = $wgRequest->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
  68                         return $new ? new EnhancedChangesList( $sk ) : new OldChangesList( $sk );
  69                 } else {
  70                         return $list;
  71                 }
  72         }
  73
  74         /**
  75          * Sets the list to use a <li class="watchlist-(namespace)-(page)"> tag
  76          * @param $value Boolean
  77          */
  78         public function setWatchlistDivs( $value = true ) {
  79                 $this->watchlist = $value;
  80         }
  81
  82         /**
  83          * As we use the same small set of messages in various methods and that
  84          * they are called often, we call them once and save them in $this->message
  85          */
  86         private function preCacheMessages() {
  87                 if( !isset( $this->message ) ) {
  88                         foreach ( explode( ' ', 'cur diff hist last blocklink history ' .
  89                         'semicolon-separator pipe-separator' ) as $msg ) {
  90                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
  91                         }
  92                 }
  93         }
  94
  95         /**
  96          * Returns the appropriate flags for new page, minor change and patrolling
  97          * @param $flags Array Associative array of 'flag' => Bool
  98          * @param $nothing String to use for empty space
  99          * @return String
 100          */
 101         protected function recentChangesFlags( $flags, $nothing = '&#160;' ) {
 102                 $f = '';
 103                 foreach( array( 'newpage', 'minor', 'bot', 'unpatrolled' ) as $flag ){
 104                         $f .= isset( $flags[$flag] ) && $flags[$flag]
 105                                 ? self::flag( $flag )
 106                                 : $nothing;
 107                 }
 108                 return $f;
 109         }
 110
 111         /**
 112          * Provide the <abbr> element appropriate to a given abbreviated flag,
 113          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 114          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 115          * "!" respectively, plus it will have an appropriate title and class.
 116          *
 117          * @param $flag String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 118          * @return String: Raw HTML
 119          */
 120         public static function flag( $flag ) {
 121                 static $messages = null;
 122                 if ( is_null( $messages ) ) {
 123                         $messages = array(
 124                                 'newpage' => array( 'newpageletter', 'recentchanges-label-newpage' ),
 125                                 'minoredit' => array( 'minoreditletter', 'recentchanges-label-minor' ),
 126                                 'botedit' => array( 'boteditletter', 'recentchanges-label-bot' ),
 127                                 'unpatrolled' => array( 'unpatrolledletter', 'recentchanges-label-unpatrolled' ),
 128                         );
 129                         foreach( $messages as &$value ) {
 130                                 $value[0] = wfMsgExt( $value[0], 'escapenoentities' );
 131                                 $value[1] = wfMsgExt( $value[1], 'escapenoentities' );
 132                         }
 133                 }
 134
 135                 # Inconsistent naming, bleh
 136                 $map = array(
 137                         'newpage' => 'newpage',
 138                         'minor' => 'minoredit',
 139                         'bot' => 'botedit',
 140                         'unpatrolled' => 'unpatrolled',
 141                         'minoredit' => 'minoredit',
 142                         'botedit' => 'botedit',
 143                 );
 144                 $flag = $map[$flag];
 145
 146                 return "<abbr class='$flag' title='" . $messages[$flag][1] . "'>" . $messages[$flag][0] . '</abbr>';
 147         }
 148
 149         /**
 150          * Returns text for the start of the tabular part of RC
 151          * @return String
 152          */
 153         public function beginRecentChangesList() {
 154                 $this->rc_cache = array();
 155                 $this->rcMoveIndex = 0;
 156                 $this->rcCacheIndex = 0;
 157                 $this->lastdate = '';
 158                 $this->rclistOpen = false;
 159                 return '';
 160         }
 161
 162         /**
 163          * Show formatted char difference
 164          * @param $old Integer: bytes
 165          * @param $new Integer: bytes
 166          * @return String
 167          */
 168         public static function showCharacterDifference( $old, $new ) {
 169                 global $wgRCChangedSizeThreshold, $wgLang, $wgMiserMode;
 170                 $szdiff = $new - $old;
 171
 172                 $code = $wgLang->getCode();
 173                 static $fastCharDiff = array();
 174                 if ( !isset($fastCharDiff[$code]) ) {
 175                         $fastCharDiff[$code] = $wgMiserMode || wfMsgNoTrans( 'rc-change-size' ) === '$1';
 176                 }
 177
 178                 $formatedSize = $wgLang->formatNum($szdiff);
 179
 180                 if ( !$fastCharDiff[$code] ) {
 181                         $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape' ), $formatedSize );
 182                 }
 183
 184                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 185                         $tag = 'strong';
 186                 } else {
 187                         $tag = 'span';
 188                 }
 189                 if( $szdiff === 0 ) {
 190                         return "<$tag class='mw-plusminus-null'>($formatedSize)</$tag>";
 191                 } elseif( $szdiff > 0 ) {
 192                         return "<$tag class='mw-plusminus-pos'>(+$formatedSize)</$tag>";
 193                 } else {
 194                         return "<$tag class='mw-plusminus-neg'>($formatedSize)</$tag>";
 195                 }
 196         }
 197
 198         /**
 199          * Returns text for the end of RC
 200          * @return String
 201          */
 202         public function endRecentChangesList() {
 203                 if( $this->rclistOpen ) {
 204                         return "</ul>\n";
 205                 } else {
 206                         return '';
 207                 }
 208         }
 209
 210         /**
 211          * @param $s
 212          * @param $rc RecentChange
 213          * @return void
 214          */
 215         public function insertMove( &$s, $rc ) {
 216                 # Diff
 217                 $s .= '(' . $this->message['diff'] . ') (';
 218                 # Hist
 219                 $s .= $this->skin->link(
 220                         $rc->getMovedToTitle(),
 221                         $this->message['hist'],
 222                         array(),
 223                         array( 'action' => 'history' ),
 224                         array( 'known', 'noclasses' )
 225                 ) . ') . . ';
 226                 # "[[x]] moved to [[y]]"
 227                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 228                 $s .= wfMsg(
 229                         $msg,
 230                         $this->skin->link(
 231                                 $rc->getTitle(),
 232                                 null,
 233                                 array(),
 234                                 array( 'redirect' => 'no' ),
 235                                 array( 'known', 'noclasses' )
 236                         ),
 237                         $this->skin->link(
 238                                 $rc->getMovedToTitle(),
 239                                 null,
 240                                 array(),
 241                                 array(),
 242                                 array( 'known', 'noclasses' )
 243                         )
 244                 );
 245         }
 246
 247         public function insertDateHeader( &$s, $rc_timestamp ) {
 248                 global $wgLang;
 249                 # Make date header if necessary
 250                 $date = $wgLang->date( $rc_timestamp, true, true );
 251                 if( $date != $this->lastdate ) {
 252                         if( $this->lastdate != '' ) {
 253                                 $s .= "</ul>\n";
 254                         }
 255                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 256                         $this->lastdate = $date;
 257                         $this->rclistOpen = true;
 258                 }
 259         }
 260
 261         public function insertLog( &$s, $title, $logtype ) {
 262                 $logname = LogPage::logName( $logtype );
 263                 $s .= '(' . $this->skin->link(
 264                         $title,
 265                         $logname,
 266                         array(),
 267                         array(),
 268                         array( 'known', 'noclasses' )
 269                 ) . ')';
 270         }
 271
 272         /**
 273          * @param $s
 274          * @param $rc RecentChange
 275          * @param $unpatrolled
 276          * @return void
 277          */
 278         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 279                 # Diff link
 280                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 281                         $diffLink = $this->message['diff'];
 282                 } elseif( !self::userCan($rc,Revision::DELETED_TEXT) ) {
 283                         $diffLink = $this->message['diff'];
 284                 } else {
 285                         $query = array(
 286                                 'curid' => $rc->mAttribs['rc_cur_id'],
 287                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 288                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 289                         );
 290
 291                         if( $unpatrolled ) {
 292                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 293                         };
 294
 295                         $diffLink = $this->skin->link(
 296                                 $rc->getTitle(),
 297                                 $this->message['diff'],
 298                                 array( 'tabindex' => $rc->counter ),
 299                                 $query,
 300                                 array( 'known', 'noclasses' )
 301                         );
 302                 }
 303                 $s .= '(' . $diffLink . $this->message['pipe-separator'];
 304                 # History link
 305                 $s .= $this->skin->link(
 306                         $rc->getTitle(),
 307                         $this->message['hist'],
 308                         array(),
 309                         array(
 310                                 'curid' => $rc->mAttribs['rc_cur_id'],
 311                                 'action' => 'history'
 312                         ),
 313                         array( 'known', 'noclasses' )
 314                 );
 315                 $s .= ') . . ';
 316         }
 317
 318         /**
 319          * @param $s
 320          * @param $rc RecentChange
 321          * @param $unpatrolled
 322          * @param $watched
 323          * @return void
 324          */
 325         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 326                 # If it's a new article, there is no diff link, but if it hasn't been
 327                 # patrolled yet, we need to give users a way to do so
 328                 $params = array();
 329
 330                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 331                         $params['rcid'] = $rc->mAttribs['rc_id'];
 332                 }
 333
 334                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 335                         $articlelink = $this->skin->link(
 336                                 $rc->getTitle(),
 337                                 null,
 338                                 array(),
 339                                 $params,
 340                                 array( 'known', 'noclasses' )
 341                         );
 342                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 343                 } else {
 344                         $articlelink = ' '. $this->skin->link(
 345                                 $rc->getTitle(),
 346                                 null,
 347                                 array(),
 348                                 $params,
 349                                 array( 'known', 'noclasses' )
 350                         );
 351                 }
 352                 # Bolden pages watched by this user
 353                 if( $watched ) {
 354                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 355                 }
 356                 # RTL/LTR marker
 357                 $articlelink .= wfUILang()->getDirMark();
 358
 359                 wfRunHooks( 'ChangesListInsertArticleLink',
 360                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 361
 362                 $s .= " $articlelink";
 363         }
 364
 365         /**
 366          * @param $s
 367          * @param $rc RecentChange
 368          * @return void
 369          */
 370         public function insertTimestamp( &$s, $rc ) {
 371                 global $wgLang;
 372                 $s .= $this->message['semicolon-separator'] .
 373                         $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 374         }
 375
 376         /** Insert links to user page, user talk page and eventually a blocking link
 377          *
 378          * @param $rc RecentChange
 379          */
 380         public function insertUserRelatedLinks( &$s, &$rc ) {
 381                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 382                         $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 383                 } else {
 384                         $s .= $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 385                         $s .= $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 386                 }
 387         }
 388
 389         /** insert a formatted action
 390          *
 391          * @param $rc RecentChange
 392          */
 393         public function insertAction( &$s, &$rc ) {
 394                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 395                         if( $this->isDeleted( $rc, LogPage::DELETED_ACTION ) ) {
 396                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 397                         } else {
 398                                 $s .= ' '.LogPage::actionText( $rc->mAttribs['rc_log_type'], $rc->mAttribs['rc_log_action'],
 399                                         $rc->getTitle(), $this->skin, LogPage::extractParams( $rc->mAttribs['rc_params'] ), true, true );
 400                         }
 401                 }
 402         }
 403
 404         /** insert a formatted comment
 405          *
 406          * @param $rc RecentChange
 407          */
 408         public function insertComment( &$s, &$rc ) {
 409                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 410                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 411                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 412                         } else {
 413                                 $s .= $this->skin->commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 414                         }
 415                 }
 416         }
 417
 418         /**
 419          * Check whether to enable recent changes patrol features
 420          * @return Boolean
 421          */
 422         public static function usePatrol() {
 423                 global $wgUser;
 424                 return $wgUser->useRCPatrol();
 425         }
 426
 427         /**
 428          * Returns the string which indicates the number of watching users
 429          */
 430         protected function numberofWatchingusers( $count ) {
 431                 global $wgLang;
 432                 static $cache = array();
 433                 if( $count > 0 ) {
 434                         if( !isset( $cache[$count] ) ) {
 435                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 436                                         array('parsemag', 'escape' ), $wgLang->formatNum( $count ) );
 437                         }
 438                         return $cache[$count];
 439                 } else {
 440                         return '';
 441                 }
 442         }
 443
 444         /**
 445          * Determine if said field of a revision is hidden
 446          * @param $rc RCCacheEntry
 447          * @param $field Integer: one of DELETED_* bitfield constants
 448          * @return Boolean
 449          */
 450         public static function isDeleted( $rc, $field ) {
 451                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 452         }
 453
 454         /**
 455          * Determine if the current user is allowed to view a particular
 456          * field of this revision, if it's marked as deleted.
 457          * @param $rc RCCacheEntry
 458          * @param $field Integer
 459          * @return Boolean
 460          */
 461         public static function userCan( $rc, $field ) {
 462                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 463                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 464                 } else {
 465                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 466                 }
 467         }
 468
 469         protected function maybeWatchedLink( $link, $watched = false ) {
 470                 if( $watched ) {
 471                         return '<strong class="mw-watched">' . $link . '</strong>';
 472                 } else {
 473                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 474                 }
 475         }
 476
 477         /** Inserts a rollback link
 478          *
 479          * @param $s
 480          * @param $rc RecentChange
 481          */
 482         public function insertRollback( &$s, &$rc ) {
 483                 global $wgUser;
 484                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 485                         $page = $rc->getTitle();
 486                         /** Check for rollback and edit permissions, disallow special pages, and only
 487                           * show a link on the top-most revision */
 488                         if ($wgUser->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 489                         {
 490                                 $rev = new Revision( array(
 491                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 492                                         'user'      => $rc->mAttribs['rc_user'],
 493                                         'user_text' => $rc->mAttribs['rc_user_text'],
 494                                         'deleted'   => $rc->mAttribs['rc_deleted']
 495                                 ) );
 496                                 $rev->setTitle( $page );
 497                                 $s .= ' '.$this->skin->generateRollback( $rev );
 498                         }
 499                 }
 500         }
 501
 502         /**
 503          * @param $s
 504          * @param $rc RecentChange
 505          * @param $classes
 506          * @return
 507          */
 508         public function insertTags( &$s, &$rc, &$classes ) {
 509                 if ( empty($rc->mAttribs['ts_tags']) )
 510                         return;
 511
 512                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 513                 $classes = array_merge( $classes, $newClasses );
 514                 $s .= ' ' . $tagSummary;
 515         }
 516
 517         public function insertExtra( &$s, &$rc, &$classes ) {
 518                 ## Empty, used for subclassers to add anything special.
 519         }
 520 }
 521
 522
 523 /**
 524  * Generate a list of changes using the good old system (no javascript)
 525  */
 526 class OldChangesList extends ChangesList {
 527         /**
 528          * Format a line using the old system (aka without any javascript).
 529          *
 530          * @param $rc RecentChange
 531          */
 532         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 533                 global $wgLang, $wgRCShowChangedSize, $wgUser;
 534                 wfProfileIn( __METHOD__ );
 535                 # Should patrol-related stuff be shown?
 536                 $unpatrolled = $wgUser->useRCPatrol() && !$rc->mAttribs['rc_patrolled'];
 537
 538                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 539                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 540
 541                 $s = '';
 542                 $classes = array();
 543                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 544                 if( $linenumber ) {
 545                         if( $linenumber & 1 ) {
 546                                 $classes[] = 'mw-line-odd';
 547                         }
 548                         else {
 549                                 $classes[] = 'mw-line-even';
 550                         }
 551                 }
 552
 553                 // Moved pages
 554                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 555                         $this->insertMove( $s, $rc );
 556                 // Log entries
 557                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 558                         $logtitle = Title::newFromText( 'Log/'.$rc->mAttribs['rc_log_type'], NS_SPECIAL );
 559                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 560                 // Log entries (old format) or log targets, and special pages
 561                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 562                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 563                         if( $name == 'Log' ) {
 564                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 565                         }
 566                 // Regular entries
 567                 } else {
 568                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 569                         # M, N, b and ! (minor, new, bot and unpatrolled)
 570                         $s .= $this->recentChangesFlags(
 571                                 array(
 572                                         'newpage' => $rc->mAttribs['rc_new'],
 573                                         'minor' => $rc->mAttribs['rc_minor'],
 574                                         'unpatrolled' => $unpatrolled,
 575                                         'bot' => $rc->mAttribs['rc_bot']
 576                                 ),
 577                                 ''
 578                         );
 579                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 580                 }
 581                 # Edit/log timestamp
 582                 $this->insertTimestamp( $s, $rc );
 583                 # Bytes added or removed
 584                 if( $wgRCShowChangedSize ) {
 585                         $cd = $rc->getCharacterDifference();
 586                         if( $cd != '' ) {
 587                                 $s .= "$cd  . . ";
 588                         }
 589                 }
 590                 # User tool links
 591                 $this->insertUserRelatedLinks( $s, $rc );
 592                 # LTR/RTL direction mark
 593                 $s .= wfUILang()->getDirMark();
 594                 # Log action text (if any)
 595                 $this->insertAction( $s, $rc );
 596                 # Edit or log comment
 597                 $this->insertComment( $s, $rc );
 598                 # Tags
 599                 $this->insertTags( $s, $rc, $classes );
 600                 # Rollback
 601                 $this->insertRollback( $s, $rc );
 602                 # For subclasses
 603                 $this->insertExtra( $s, $rc, $classes );
 604
 605                 # How many users watch this page
 606                 if( $rc->numberofWatchingusers > 0 ) {
 607                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 608                                 array( 'parsemag', 'escape' ), $wgLang->formatNum( $rc->numberofWatchingusers ) );
 609                 }
 610
 611                 if( $this->watchlist ) {
 612                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 613                 }
 614
 615                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 616
 617                 wfProfileOut( __METHOD__ );
 618                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 619         }
 620 }
 621
 622
 623 /**
 624  * Generate a list of changes using an Enhanced system (uses javascript).
 625  */
 626 class EnhancedChangesList extends ChangesList {
 627         /**
 628          * Add the JavaScript file for enhanced changeslist
 629          * @return String
 630          */
 631         public function beginRecentChangesList() {
 632                 global $wgOut;
 633                 $this->rc_cache = array();
 634                 $this->rcMoveIndex = 0;
 635                 $this->rcCacheIndex = 0;
 636                 $this->lastdate = '';
 637                 $this->rclistOpen = false;
 638                 $wgOut->addModuleStyles( 'mediawiki.special.changeslist' );
 639                 return '';
 640         }
 641         /**
 642          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 643          *
 644          * @param $baseRC RecentChange
 645          * @param $watched bool
 646          *
 647          * @return string
 648          */
 649         public function recentChangesLine( &$baseRC, $watched = false ) {
 650                 global $wgLang, $wgUser;
 651
 652                 wfProfileIn( __METHOD__ );
 653
 654                 # Create a specialised object
 655                 $rc = RCCacheEntry::newFromParent( $baseRC );
 656
 657                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 658
 659                 # If it's a new day, add the headline and flush the cache
 660                 $date = $wgLang->date( $rc->mAttribs['rc_timestamp'], true );
 661                 $ret = '';
 662                 if( $date != $this->lastdate ) {
 663                         # Process current cache
 664                         $ret = $this->recentChangesBlock();
 665                         $this->rc_cache = array();
 666                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 667                         $this->lastdate = $date;
 668                 }
 669
 670                 # Should patrol-related stuff be shown?
 671                 if( $wgUser->useRCPatrol() ) {
 672                         $rc->unpatrolled = !$rc->mAttribs['rc_patrolled'];
 673                 } else {
 674                         $rc->unpatrolled = false;
 675                 }
 676
 677                 $showdifflinks = true;
 678                 # Make article link
 679                 $type = $rc->mAttribs['rc_type'];
 680                 $logType = $rc->mAttribs['rc_log_type'];
 681                 // Page moves
 682                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 683                         $msg = ( $type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 684                         $clink = wfMsg( $msg, $this->skin->linkKnown( $rc->getTitle(), null,
 685                                 array(), array( 'redirect' => 'no' ) ),
 686                                 $this->skin->linkKnown( $rc->getMovedToTitle() ) );
 687                 // New unpatrolled pages
 688                 } elseif( $rc->unpatrolled && $type == RC_NEW ) {
 689                         $clink = $this->skin->linkKnown( $rc->getTitle(), null, array(),
 690                                 array( 'rcid' => $rc->mAttribs['rc_id'] ) );
 691                 // Log entries
 692                 } elseif( $type == RC_LOG ) {
 693                         if( $logType ) {
 694                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 695                                 $clink = '(' . $this->skin->linkKnown( $logtitle,
 696                                         LogPage::logName( $logType ) ) . ')';
 697                         } else {
 698                                 $clink = $this->skin->link( $rc->getTitle() );
 699                         }
 700                         $watched = false;
 701                 // Log entries (old format) and special pages
 702                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 703                         list( $specialName, $logtype ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 704                         if ( $specialName == 'Log' ) {
 705                                 # Log updates, etc
 706                                 $logname = LogPage::logName( $logtype );
 707                                 $clink = '(' . $this->skin->linkKnown( $rc->getTitle(), $logname ) . ')';
 708                         } else {
 709                                 wfDebug( "Unexpected special page in recentchanges\n" );
 710                                 $clink = '';
 711                         }
 712                 // Edits
 713                 } else {
 714                         $clink = $this->skin->linkKnown( $rc->getTitle() );
 715                 }
 716
 717                 # Don't show unusable diff links
 718                 if ( !ChangesList::userCan($rc,Revision::DELETED_TEXT) ) {
 719                         $showdifflinks = false;
 720                 }
 721
 722                 $time = $wgLang->time( $rc->mAttribs['rc_timestamp'], true, true );
 723                 $rc->watched = $watched;
 724                 $rc->link = $clink;
 725                 $rc->timestamp = $time;
 726                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 727
 728                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 729                 # called too many times (50% of CPU time on RecentChanges!).
 730                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 731                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 732                 if( $rc->unpatrolled ) {
 733                         $rcIdQuery = array( 'rcid' => $rc->mAttribs['rc_id'] );
 734                 } else {
 735                         $rcIdQuery = array();
 736                 }
 737                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 738                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' =>
 739                         $lastOldid ) + $rcIdQuery;
 740
 741                 if( !$showdifflinks ) {
 742                         $curLink = $this->message['cur'];
 743                         $diffLink = $this->message['diff'];
 744                 } elseif( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 745                         if ( $type != RC_NEW ) {
 746                                 $curLink = $this->message['cur'];
 747                         } else {
 748                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 749                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 750                         }
 751                         $diffLink = $this->message['diff'];
 752                 } else {
 753                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querydiff ) );
 754                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 755                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 756                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 757                 }
 758
 759                 # Make "last" link
 760                 if( !$showdifflinks || !$lastOldid ) {
 761                         $lastLink = $this->message['last'];
 762                 } elseif( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 763                         $lastLink = $this->message['last'];
 764                 } else {
 765                         $lastLink = $this->skin->linkKnown( $rc->getTitle(), $this->message['last'],
 766                                 array(), $curIdEq + array('diff' => $thisOldid, 'oldid' => $lastOldid) + $rcIdQuery );
 767                 }
 768
 769                 # Make user links
 770                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 771                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 772                 } else {
 773                         $rc->userlink = $this->skin->userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 774                         $rc->usertalklink = $this->skin->userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 775                 }
 776
 777                 $rc->lastlink = $lastLink;
 778                 $rc->curlink  = $curLink;
 779                 $rc->difflink = $diffLink;
 780
 781                 # Put accumulated information into the cache, for later display
 782                 # Page moves go on their own line
 783                 $title = $rc->getTitle();
 784                 $secureName = $title->getPrefixedDBkey();
 785                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 786                         # Use an @ character to prevent collision with page names
 787                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 788                 } else {
 789                         # Logs are grouped by type
 790                         if( $type == RC_LOG ){
 791                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 792                         }
 793                         if( !isset( $this->rc_cache[$secureName] ) ) {
 794                                 $this->rc_cache[$secureName] = array();
 795                         }
 796
 797                         array_push( $this->rc_cache[$secureName], $rc );
 798                 }
 799
 800                 wfProfileOut( __METHOD__ );
 801
 802                 return $ret;
 803         }
 804
 805         /**
 806          * Enhanced RC group
 807          */
 808         protected function recentChangesBlockGroup( $block ) {
 809                 global $wgLang, $wgRCShowChangedSize;
 810
 811                 wfProfileIn( __METHOD__ );
 812
 813                 # Add the namespace and title of the block as part of the class
 814                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 815                         # Log entry
 816                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 817                 } else {
 818                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 819                 }
 820                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 821                         Html::openElement( 'tr' );
 822
 823                 # Collate list of users
 824                 $userlinks = array();
 825                 # Other properties
 826                 $unpatrolled = false;
 827                 $isnew = false;
 828                 $curId = $currentRevision = 0;
 829                 # Some catalyst variables...
 830                 $namehidden = true;
 831                 $allLogs = true;
 832                 foreach( $block as $rcObj ) {
 833                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 834                         if( $rcObj->mAttribs['rc_new'] ) {
 835                                 $isnew = true;
 836                         }
 837                         // If all log actions to this page were hidden, then don't
 838                         // give the name of the affected page for this block!
 839                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 840                                 $namehidden = false;
 841                         }
 842                         $u = $rcObj->userlink;
 843                         if( !isset( $userlinks[$u] ) ) {
 844                                 $userlinks[$u] = 0;
 845                         }
 846                         if( $rcObj->unpatrolled ) {
 847                                 $unpatrolled = true;
 848                         }
 849                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 850                                 $allLogs = false;
 851                         }
 852                         # Get the latest entry with a page_id and oldid
 853                         # since logs may not have these.
 854                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 855                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 856                         }
 857                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 858                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 859                         }
 860
 861                         $bot = $rcObj->mAttribs['rc_bot'];
 862                         $userlinks[$u]++;
 863                 }
 864
 865                 # Sort the list and convert to text
 866                 krsort( $userlinks );
 867                 asort( $userlinks );
 868                 $users = array();
 869                 foreach( $userlinks as $userlink => $count) {
 870                         $text = $userlink;
 871                         $text .= wfUILang()->getDirMark();
 872                         if( $count > 1 ) {
 873                                 $text .= ' (' . $wgLang->formatNum( $count ) . '×)';
 874                         }
 875                         array_push( $users, $text );
 876                 }
 877
 878                 $users = ' <span class="changedby">[' .
 879                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 880
 881                 # Title for <a> tags
 882                 $expandTitle = htmlspecialchars( wfMsg( 'rc-enhanced-expand' ) );
 883                 $closeTitle = htmlspecialchars( wfMsg( 'rc-enhanced-hide' ) );
 884
 885                 $tl = "<span class='mw-collapsible-toggle'>"
 886                         . "<span class='mw-rc-openarrow'>"
 887                         . "<a href='#' title='$expandTitle'>{$this->sideArrow()}</a>"
 888                         . "</span><span class='mw-rc-closearrow'>"
 889                         . "<a href='#' title='$closeTitle'>{$this->downArrow()}</a>"
 890                         . "</span></span>";
 891                 $r .= "<td>$tl</td>";
 892
 893                 # Main line
 894                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 895                         'newpage' => $isnew,
 896                         'minor' => false,
 897                         'unpatrolled' => $unpatrolled,
 898                         'bot' => $bot ,
 899                 ) );
 900
 901                 # Timestamp
 902                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td>';
 903
 904                 # Article link
 905                 if( $namehidden ) {
 906                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 907                 } elseif( $allLogs ) {
 908                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 909                 } else {
 910                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 911                 }
 912
 913                 $r .= wfUILang()->getDirMark();
 914
 915                 $queryParams['curid'] = $curId;
 916                 # Changes message
 917                 $n = count($block);
 918                 static $nchanges = array();
 919                 if ( !isset( $nchanges[$n] ) ) {
 920                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $wgLang->formatNum( $n ) );
 921                 }
 922                 # Total change link
 923                 $r .= ' ';
 924                 if( !$allLogs ) {
 925                         $r .= '(';
 926                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT ) ) {
 927                                 $r .= $nchanges[$n];
 928                         } elseif( $isnew ) {
 929                                 $r .= $nchanges[$n];
 930                         } else {
 931                                 $params = $queryParams;
 932                                 $params['diff'] = $currentRevision;
 933                                 $params['oldid'] = $oldid;
 934
 935                                 $r .= $this->skin->link(
 936                                         $block[0]->getTitle(),
 937                                         $nchanges[$n],
 938                                         array(),
 939                                         $params,
 940                                         array( 'known', 'noclasses' )
 941                                 );
 942                         }
 943                 }
 944
 945                 # History
 946                 if( $allLogs ) {
 947                         // don't show history link for logs
 948                 } elseif( $namehidden || !$block[0]->getTitle()->exists() ) {
 949                         $r .= $this->message['pipe-separator'] . $this->message['hist'] . ')';
 950                 } else {
 951                         $params = $queryParams;
 952                         $params['action'] = 'history';
 953
 954                         $r .= $this->message['pipe-separator'] .
 955                                 $this->skin->link(
 956                                         $block[0]->getTitle(),
 957                                         $this->message['hist'],
 958                                         array(),
 959                                         $params,
 960                                         array( 'known', 'noclasses' )
 961                                 ) . ')';
 962                 }
 963                 $r .= ' . . ';
 964
 965                 # Character difference (does not apply if only log items)
 966                 if( $wgRCShowChangedSize && !$allLogs ) {
 967                         $last = 0;
 968                         $first = count($block) - 1;
 969                         # Some events (like logs) have an "empty" size, so we need to skip those...
 970                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 971                                 $last++;
 972                         }
 973                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 974                                 $first--;
 975                         }
 976                         # Get net change
 977                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 978                                 $block[$last]->mAttribs['rc_new_len'] );
 979
 980                         if( $chardiff == '' ) {
 981                                 $r .= ' ';
 982                         } else {
 983                                 $r .= ' ' . $chardiff. ' . . ';
 984                         }
 985                 }
 986
 987                 $r .= $users;
 988                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 989
 990                 # Sub-entries
 991                 foreach( $block as $rcObj ) {
 992                         # Classes to apply -- TODO implement
 993                         $classes = array();
 994                         $type = $rcObj->mAttribs['rc_type'];
 995
 996                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 997                         $r .= '<tr><td></td><td class="mw-enhanced-rc">';
 998                         $r .= $this->recentChangesFlags( array(
 999                                 'newpage' => $rcObj->mAttribs['rc_new'],
1000                                 'minor' => $rcObj->mAttribs['rc_minor'],
1001                                 'unpatrolled' => $rcObj->unpatrolled,
1002                                 'bot' => $rcObj->mAttribs['rc_bot'],
1003                         ) );
1004                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
1005
1006                         $params = $queryParams;
1007
1008                         if( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
1009                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
1010                         }
1011
1012                         # Log timestamp
1013                         if( $type == RC_LOG ) {
1014                                 $link = $rcObj->timestamp;
1015                         # Revision link
1016                         } elseif( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
1017                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
1018                         } else {
1019                                 if ( $rcObj->unpatrolled && $type == RC_NEW) {
1020                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
1021                                 }
1022
1023                                 $link = $this->skin->link(
1024                                                 $rcObj->getTitle(),
1025                                                 $rcObj->timestamp,
1026                                                 array(),
1027                                                 $params,
1028                                                 array( 'known', 'noclasses' )
1029                                         );
1030                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
1031                                         $link = '<span class="history-deleted">'.$link.'</span> ';
1032                         }
1033                         $r .= $link . '</span>';
1034
1035                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1036                                 $r .= ' (';
1037                                 $r .= $rcObj->curlink;
1038                                 $r .= $this->message['pipe-separator'];
1039                                 $r .= $rcObj->lastlink;
1040                                 $r .= ')';
1041                         }
1042                         $r .= ' . . ';
1043
1044                         # Character diff
1045                         if( $wgRCShowChangedSize && $rcObj->getCharacterDifference() ) {
1046                                 $r .= $rcObj->getCharacterDifference() . ' . . ' ;
1047                         }
1048
1049                         # User links
1050                         $r .= $rcObj->userlink;
1051                         $r .= $rcObj->usertalklink;
1052                         // log action
1053                         $this->insertAction( $r, $rcObj );
1054                         // log comment
1055                         $this->insertComment( $r, $rcObj );
1056                         # Rollback
1057                         $this->insertRollback( $r, $rcObj );
1058                         # Tags
1059                         $this->insertTags( $r, $rcObj, $classes );
1060
1061                         $r .= "</td></tr>\n";
1062                 }
1063                 $r .= "</table>\n";
1064
1065                 $this->rcCacheIndex++;
1066
1067                 wfProfileOut( __METHOD__ );
1068
1069                 return $r;
1070         }
1071
1072         /**
1073          * Generate HTML for an arrow or placeholder graphic
1074          * @param $dir String: one of '', 'd', 'l', 'r'
1075          * @param $alt String: text
1076          * @param $title String: text
1077          * @return String: HTML <img> tag
1078          */
1079         protected function arrow( $dir, $alt='', $title='' ) {
1080                 global $wgStylePath;
1081                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1082                 $encAlt = htmlspecialchars( $alt );
1083                 $encTitle = htmlspecialchars( $title );
1084                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1085         }
1086
1087         /**
1088          * Generate HTML for a right- or left-facing arrow,
1089          * depending on language direction.
1090          * @return String: HTML <img> tag
1091          */
1092         protected function sideArrow() {
1093                 global $wgContLang;
1094                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
1095                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1096         }
1097
1098         /**
1099          * Generate HTML for a down-facing arrow
1100          * depending on language direction.
1101          * @return String: HTML <img> tag
1102          */
1103         protected function downArrow() {
1104                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1105         }
1106
1107         /**
1108          * Generate HTML for a spacer image
1109          * @return String: HTML <img> tag
1110          */
1111         protected function spacerArrow() {
1112                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1113         }
1114
1115         /**
1116          * Enhanced RC ungrouped line.
1117          *
1118          * @param $rcObj RecentChange
1119          * @return String: a HTML formated line (generated using $r)
1120          */
1121         protected function recentChangesBlockLine( $rcObj ) {
1122                 global $wgRCShowChangedSize;
1123
1124                 wfProfileIn( __METHOD__ );
1125                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1126
1127                 $type = $rcObj->mAttribs['rc_type'];
1128                 $logType = $rcObj->mAttribs['rc_log_type'];
1129                 if( $logType ) {
1130                         # Log entry
1131                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1132                 } else {
1133                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1134                 }
1135                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1136                         Html::openElement( 'tr' );
1137
1138                 $r .= '<td class="mw-enhanced-rc">' . $this->spacerArrow();
1139                 # Flag and Timestamp
1140                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1141                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1142                 } else {
1143                         $r .= $this->recentChangesFlags( array(
1144                                 'newpage' => $type == RC_NEW,
1145                                 'mino' => $rcObj->mAttribs['rc_minor'],
1146                                 'unpatrolled' => $rcObj->unpatrolled,
1147                                 'bot' => $rcObj->mAttribs['rc_bot'],
1148                         ) );
1149                 }
1150                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td>';
1151                 # Article or log link
1152                 if( $logType ) {
1153                         $logtitle = Title::newFromText( "Log/$logType", NS_SPECIAL );
1154                         $logname = LogPage::logName( $logType );
1155                         $r .= '(' . $this->skin->link(
1156                                 $logtitle,
1157                                 $logname,
1158                                 array(),
1159                                 array(),
1160                                 array( 'known', 'noclasses' )
1161                         ) . ')';
1162                 } else {
1163                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1164                 }
1165                 # Diff and hist links
1166                 if ( $type != RC_LOG ) {
1167                         $r .= ' ('. $rcObj->difflink . $this->message['pipe-separator'];
1168                         $query['action'] = 'history';
1169                         $r .= $this->skin->link(
1170                                 $rcObj->getTitle(),
1171                                 $this->message['hist'],
1172                                 array(),
1173                                 $query,
1174                                 array( 'known', 'noclasses' )
1175                         ) . ')';
1176                 }
1177                 $r .= ' . . ';
1178                 # Character diff
1179                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1180                         $r .= "$cd . . ";
1181                 }
1182                 # User/talk
1183                 $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1184                 # Log action (if any)
1185                 if( $logType ) {
1186                         if( $this->isDeleted($rcObj,LogPage::DELETED_ACTION) ) {
1187                                 $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
1188                         } else {
1189                                 $r .= ' ' . LogPage::actionText( $logType, $rcObj->mAttribs['rc_log_action'], $rcObj->getTitle(),
1190                                         $this->skin, LogPage::extractParams( $rcObj->mAttribs['rc_params'] ), true, true );
1191                         }
1192                 }
1193                 $this->insertComment( $r, $rcObj );
1194                 $this->insertRollback( $r, $rcObj );
1195                 # Tags
1196                 $classes = explode( ' ', $classes );
1197                 $this->insertTags( $r, $rcObj, $classes );
1198                 # Show how many people are watching this if enabled
1199                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1200
1201                 $r .= "</td></tr></table>\n";
1202
1203                 wfProfileOut( __METHOD__ );
1204
1205                 return $r;
1206         }
1207
1208         /**
1209          * If enhanced RC is in use, this function takes the previously cached
1210          * RC lines, arranges them, and outputs the HTML
1211          *
1212          * @return string
1213          */
1214         protected function recentChangesBlock() {
1215                 if( count ( $this->rc_cache ) == 0 ) {
1216                         return '';
1217                 }
1218
1219                 wfProfileIn( __METHOD__ );
1220
1221                 $blockOut = '';
1222                 foreach( $this->rc_cache as $block ) {
1223                         if( count( $block ) < 2 ) {
1224                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1225                         } else {
1226                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1227                         }
1228                 }
1229
1230                 wfProfileOut( __METHOD__ );
1231
1232                 return '<div>'.$blockOut.'</div>';
1233         }
1234
1235         /**
1236          * Returns text for the end of RC
1237          * If enhanced RC is in use, returns pretty much all the text
1238          */
1239         public function endRecentChangesList() {
1240                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1241         }
1242
1243 }