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 RequestContext
  49          */
  50         public function __construct( $obj ) {
  51                 if ( $obj instanceof RequestContext ) {
  52                         $this->setContext( $obj );
  53                         $this->skin = $obj->getSkin();
  54                 } else {
  55                         $this->setContext( $obj->getContext() );
  56                         $this->skin = $obj;
  57                 }
  58                 $this->preCacheMessages();
  59         }
  60
  61         /**
  62          * Fetch an appropriate changes list class for the main context
  63          * This first argument used to be an User object.
  64          *
  65          * @deprecated in 1.18; use newFromContext() instead
  66          * @param $unused Unused
  67          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  68          */
  69         public static function newFromUser( $unused ) {
  70                 return self::newFromContext( RequestContext::getMain() );
  71         }
  72
  73         /**
  74          * Fetch an appropriate changes list class for the specified context
  75          * Some users might want to use an enhanced list format, for instance
  76          *
  77          * @param $context RequestContext to use
  78          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  79          */
  80         public static function newFromContext( RequestContext $context ) {
  81                 $user = $context->getUser();
  82                 $sk = $context->getSkin();
  83                 $list = null;
  84                 if( wfRunHooks( 'FetchChangesList', array( $user, &$sk, &$list ) ) ) {
  85                         $new = $context->getRequest()->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
  86                         return $new ? new EnhancedChangesList( $context ) : new OldChangesList( $context );
  87                 } else {
  88                         return $list;
  89                 }
  90         }
  91
  92         /**
  93          * Sets the list to use a <li class="watchlist-(namespace)-(page)"> tag
  94          * @param $value Boolean
  95          */
  96         public function setWatchlistDivs( $value = true ) {
  97                 $this->watchlist = $value;
  98         }
  99
 100         /**
 101          * As we use the same small set of messages in various methods and that
 102          * they are called often, we call them once and save them in $this->message
 103          */
 104         private function preCacheMessages() {
 105                 if( !isset( $this->message ) ) {
 106                         foreach ( explode( ' ', 'cur diff hist last blocklink history ' .
 107                         'semicolon-separator pipe-separator' ) as $msg ) {
 108                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
 109                         }
 110                 }
 111         }
 112
 113         /**
 114          * Returns the appropriate flags for new page, minor change and patrolling
 115          * @param $flags Array Associative array of 'flag' => Bool
 116          * @param $nothing String to use for empty space
 117          * @return String
 118          */
 119         protected function recentChangesFlags( $flags, $nothing = '&#160;' ) {
 120                 $f = '';
 121                 foreach( array( 'newpage', 'minor', 'bot', 'unpatrolled' ) as $flag ){
 122                         $f .= isset( $flags[$flag] ) && $flags[$flag]
 123                                 ? self::flag( $flag )
 124                                 : $nothing;
 125                 }
 126                 return $f;
 127         }
 128
 129         /**
 130          * Provide the <abbr> element appropriate to a given abbreviated flag,
 131          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 132          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 133          * "!" respectively, plus it will have an appropriate title and class.
 134          *
 135          * @param $flag String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 136          * @return String: Raw HTML
 137          */
 138         public static function flag( $flag ) {
 139                 static $messages = null;
 140                 if ( is_null( $messages ) ) {
 141                         $messages = array(
 142                                 'newpage' => array( 'newpageletter', 'recentchanges-label-newpage' ),
 143                                 'minoredit' => array( 'minoreditletter', 'recentchanges-label-minor' ),
 144                                 'botedit' => array( 'boteditletter', 'recentchanges-label-bot' ),
 145                                 'unpatrolled' => array( 'unpatrolledletter', 'recentchanges-label-unpatrolled' ),
 146                         );
 147                         foreach( $messages as &$value ) {
 148                                 $value[0] = wfMsgExt( $value[0], 'escapenoentities' );
 149                                 $value[1] = wfMsgExt( $value[1], 'escapenoentities' );
 150                         }
 151                 }
 152
 153                 # Inconsistent naming, bleh
 154                 $map = array(
 155                         'newpage' => 'newpage',
 156                         'minor' => 'minoredit',
 157                         'bot' => 'botedit',
 158                         'unpatrolled' => 'unpatrolled',
 159                         'minoredit' => 'minoredit',
 160                         'botedit' => 'botedit',
 161                 );
 162                 $flag = $map[$flag];
 163
 164                 return "<abbr class='$flag' title='" . $messages[$flag][1] . "'>" . $messages[$flag][0] . '</abbr>';
 165         }
 166
 167         /**
 168          * Returns text for the start of the tabular part of RC
 169          * @return String
 170          */
 171         public function beginRecentChangesList() {
 172                 $this->rc_cache = array();
 173                 $this->rcMoveIndex = 0;
 174                 $this->rcCacheIndex = 0;
 175                 $this->lastdate = '';
 176                 $this->rclistOpen = false;
 177                 return '';
 178         }
 179
 180         /**
 181          * Show formatted char difference
 182          * @param $old Integer: bytes
 183          * @param $new Integer: bytes
 184          * @return String
 185          */
 186         public static function showCharacterDifference( $old, $new ) {
 187                 global $wgRCChangedSizeThreshold, $wgLang, $wgMiserMode;
 188                 $szdiff = $new - $old;
 189
 190                 $code = $wgLang->getCode();
 191                 static $fastCharDiff = array();
 192                 if ( !isset($fastCharDiff[$code]) ) {
 193                         $fastCharDiff[$code] = $wgMiserMode || wfMsgNoTrans( 'rc-change-size' ) === '$1';
 194                 }
 195
 196                 $formatedSize = $wgLang->formatNum($szdiff);
 197
 198                 if ( !$fastCharDiff[$code] ) {
 199                         $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape' ), $formatedSize );
 200                 }
 201
 202                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 203                         $tag = 'strong';
 204                 } else {
 205                         $tag = 'span';
 206                 }
 207                 if( $szdiff === 0 ) {
 208                         return "<$tag class='mw-plusminus-null'>($formatedSize)</$tag>";
 209                 } elseif( $szdiff > 0 ) {
 210                         return "<$tag class='mw-plusminus-pos'>(+$formatedSize)</$tag>";
 211                 } else {
 212                         return "<$tag class='mw-plusminus-neg'>($formatedSize)</$tag>";
 213                 }
 214         }
 215
 216         /**
 217          * Returns text for the end of RC
 218          * @return String
 219          */
 220         public function endRecentChangesList() {
 221                 if( $this->rclistOpen ) {
 222                         return "</ul>\n";
 223                 } else {
 224                         return '';
 225                 }
 226         }
 227
 228         /**
 229          * @param $s
 230          * @param $rc RecentChange
 231          * @return void
 232          */
 233         public function insertMove( &$s, $rc ) {
 234                 # Diff
 235                 $s .= '(' . $this->message['diff'] . ') (';
 236                 # Hist
 237                 $s .= Linker::linkKnown(
 238                         $rc->getMovedToTitle(),
 239                         $this->message['hist'],
 240                         array(),
 241                         array( 'action' => 'history' )
 242                 ) . ') . . ';
 243                 # "[[x]] moved to [[y]]"
 244                 $msg = ( $rc->mAttribs['rc_type'] == RC_MOVE ) ? '1movedto2' : '1movedto2_redir';
 245                 $s .= wfMsgHtml(
 246                         $msg,
 247                         Linker::linkKnown(
 248                                 $rc->getTitle(),
 249                                 null,
 250                                 array(),
 251                                 array( 'redirect' => 'no' )
 252                         ),
 253                         Linker::linkKnown( $rc->getMovedToTitle() )
 254                 );
 255         }
 256
 257         public function insertDateHeader( &$s, $rc_timestamp ) {
 258                 # Make date header if necessary
 259                 $date = $this->getLang()->date( $rc_timestamp, true, true );
 260                 if( $date != $this->lastdate ) {
 261                         if( $this->lastdate != '' ) {
 262                                 $s .= "</ul>\n";
 263                         }
 264                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 265                         $this->lastdate = $date;
 266                         $this->rclistOpen = true;
 267                 }
 268         }
 269
 270         public function insertLog( &$s, $title, $logtype ) {
 271                 $logname = LogPage::logName( $logtype );
 272                 $s .= '(' . Linker::linkKnown( $title, htmlspecialchars( $logname ) ) . ')';
 273         }
 274
 275         /**
 276          * @param $s
 277          * @param $rc RecentChange
 278          * @param $unpatrolled
 279          * @return void
 280          */
 281         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 282                 # Diff link
 283                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 284                         $diffLink = $this->message['diff'];
 285                 } elseif( !self::userCan($rc,Revision::DELETED_TEXT) ) {
 286                         $diffLink = $this->message['diff'];
 287                 } else {
 288                         $query = array(
 289                                 'curid' => $rc->mAttribs['rc_cur_id'],
 290                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 291                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 292                         );
 293
 294                         if( $unpatrolled ) {
 295                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 296                         };
 297
 298                         $diffLink = Linker::linkKnown(
 299                                 $rc->getTitle(),
 300                                 $this->message['diff'],
 301                                 array( 'tabindex' => $rc->counter ),
 302                                 $query
 303                         );
 304                 }
 305                 $s .= '(' . $diffLink . $this->message['pipe-separator'];
 306                 # History link
 307                 $s .= Linker::linkKnown(
 308                         $rc->getTitle(),
 309                         $this->message['hist'],
 310                         array(),
 311                         array(
 312                                 'curid' => $rc->mAttribs['rc_cur_id'],
 313                                 'action' => 'history'
 314                         )
 315                 );
 316                 $s .= ') . . ';
 317         }
 318
 319         /**
 320          * @param $s
 321          * @param $rc RecentChange
 322          * @param $unpatrolled
 323          * @param $watched
 324          * @return void
 325          */
 326         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 327                 # If it's a new article, there is no diff link, but if it hasn't been
 328                 # patrolled yet, we need to give users a way to do so
 329                 $params = array();
 330
 331                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 332                         $params['rcid'] = $rc->mAttribs['rc_id'];
 333                 }
 334
 335                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 336                         $articlelink = Linker::linkKnown(
 337                                 $rc->getTitle(),
 338                                 null,
 339                                 array(),
 340                                 $params
 341                         );
 342                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 343                 } else {
 344                         $articlelink = ' '. Linker::linkKnown(
 345                                 $rc->getTitle(),
 346                                 null,
 347                                 array(),
 348                                 $params
 349                         );
 350                 }
 351                 # Bolden pages watched by this user
 352                 if( $watched ) {
 353                         $articlelink = "<strong class=\"mw-watched\">{$articlelink}</strong>";
 354                 }
 355                 # RTL/LTR marker
 356                 $articlelink .= $this->getLang()->getDirMark();
 357
 358                 wfRunHooks( 'ChangesListInsertArticleLink',
 359                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 360
 361                 $s .= " $articlelink";
 362         }
 363
 364         /**
 365          * @param $s
 366          * @param $rc RecentChange
 367          * @return void
 368          */
 369         public function insertTimestamp( &$s, $rc ) {
 370                 $s .= $this->message['semicolon-separator'] .
 371                         $this->getLang()->time( $rc->mAttribs['rc_timestamp'], true, true ) . ' . . ';
 372         }
 373
 374         /** Insert links to user page, user talk page and eventually a blocking link
 375          *
 376          * @param $rc RecentChange
 377          */
 378         public function insertUserRelatedLinks( &$s, &$rc ) {
 379                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 380                         $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 381                 } else {
 382                         $s .= Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 383                         $s .= Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 384                 }
 385         }
 386
 387         /** insert a formatted action
 388          *
 389          * @param $rc RecentChange
 390          */
 391         public function insertAction( &$s, &$rc ) {
 392                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 393                         if( $this->isDeleted( $rc, LogPage::DELETED_ACTION ) ) {
 394                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 395                         } else {
 396                                 $s .= ' '.LogPage::actionText( $rc->mAttribs['rc_log_type'], $rc->mAttribs['rc_log_action'],
 397                                         $rc->getTitle(), $this->getSkin(), LogPage::extractParams( $rc->mAttribs['rc_params'] ), true, true );
 398                         }
 399                 }
 400         }
 401
 402         /** insert a formatted comment
 403          *
 404          * @param $rc RecentChange
 405          */
 406         public function insertComment( &$s, &$rc ) {
 407                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 408                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 409                                 $s .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
 410                         } else {
 411                                 $s .= Linker::commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 412                         }
 413                 }
 414         }
 415
 416         /**
 417          * Check whether to enable recent changes patrol features
 418          * @return Boolean
 419          */
 420         public static function usePatrol() {
 421                 global $wgUser;
 422                 return $wgUser->useRCPatrol();
 423         }
 424
 425         /**
 426          * Returns the string which indicates the number of watching users
 427          */
 428         protected function numberofWatchingusers( $count ) {
 429                 static $cache = array();
 430                 if( $count > 0 ) {
 431                         if( !isset( $cache[$count] ) ) {
 432                                 $cache[$count] = wfMsgExt( 'number_of_watching_users_RCview',
 433                                         array('parsemag', 'escape' ), $this->getLang()->formatNum( $count ) );
 434                         }
 435                         return $cache[$count];
 436                 } else {
 437                         return '';
 438                 }
 439         }
 440
 441         /**
 442          * Determine if said field of a revision is hidden
 443          * @param $rc RCCacheEntry
 444          * @param $field Integer: one of DELETED_* bitfield constants
 445          * @return Boolean
 446          */
 447         public static function isDeleted( $rc, $field ) {
 448                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 449         }
 450
 451         /**
 452          * Determine if the current user is allowed to view a particular
 453          * field of this revision, if it's marked as deleted.
 454          * @param $rc RCCacheEntry
 455          * @param $field Integer
 456          * @return Boolean
 457          */
 458         public static function userCan( $rc, $field ) {
 459                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 460                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 461                 } else {
 462                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field );
 463                 }
 464         }
 465
 466         protected function maybeWatchedLink( $link, $watched = false ) {
 467                 if( $watched ) {
 468                         return '<strong class="mw-watched">' . $link . '</strong>';
 469                 } else {
 470                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 471                 }
 472         }
 473
 474         /** Inserts a rollback link
 475          *
 476          * @param $s
 477          * @param $rc RecentChange
 478          */
 479         public function insertRollback( &$s, &$rc ) {
 480                 if( !$rc->mAttribs['rc_new'] && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 481                         $page = $rc->getTitle();
 482                         /** Check for rollback and edit permissions, disallow special pages, and only
 483                           * show a link on the top-most revision */
 484                         if ( $this->getUser()->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 485                         {
 486                                 $rev = new Revision( array(
 487                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 488                                         'user'      => $rc->mAttribs['rc_user'],
 489                                         'user_text' => $rc->mAttribs['rc_user_text'],
 490                                         'deleted'   => $rc->mAttribs['rc_deleted']
 491                                 ) );
 492                                 $rev->setTitle( $page );
 493                                 $s .= ' '.Linker::generateRollback( $rev, $this->getContext() );
 494                         }
 495                 }
 496         }
 497
 498         /**
 499          * @param $s
 500          * @param $rc RecentChange
 501          * @param $classes
 502          * @return
 503          */
 504         public function insertTags( &$s, &$rc, &$classes ) {
 505                 if ( empty($rc->mAttribs['ts_tags']) )
 506                         return;
 507
 508                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 509                 $classes = array_merge( $classes, $newClasses );
 510                 $s .= ' ' . $tagSummary;
 511         }
 512
 513         public function insertExtra( &$s, &$rc, &$classes ) {
 514                 ## Empty, used for subclassers to add anything special.
 515         }
 516 }
 517
 518
 519 /**
 520  * Generate a list of changes using the good old system (no javascript)
 521  */
 522 class OldChangesList extends ChangesList {
 523         /**
 524          * Format a line using the old system (aka without any javascript).
 525          *
 526          * @param $rc RecentChange
 527          */
 528         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 529                 global $wgRCShowChangedSize;
 530                 wfProfileIn( __METHOD__ );
 531                 # Should patrol-related stuff be shown?
 532                 $unpatrolled = $this->getUser()->useRCPatrol() && !$rc->mAttribs['rc_patrolled'];
 533
 534                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 535                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 536
 537                 $s = '';
 538                 $classes = array();
 539                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 540                 if( $linenumber ) {
 541                         if( $linenumber & 1 ) {
 542                                 $classes[] = 'mw-line-odd';
 543                         }
 544                         else {
 545                                 $classes[] = 'mw-line-even';
 546                         }
 547                 }
 548
 549                 // Moved pages
 550                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 551                         $this->insertMove( $s, $rc );
 552                 // Log entries
 553                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 554                         $logtitle = Title::newFromText( 'Log/'.$rc->mAttribs['rc_log_type'], NS_SPECIAL );
 555                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 556                 // Log entries (old format) or log targets, and special pages
 557                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 558                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 559                         if( $name == 'Log' ) {
 560                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 561                         }
 562                 // Regular entries
 563                 } else {
 564                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 565                         # M, N, b and ! (minor, new, bot and unpatrolled)
 566                         $s .= $this->recentChangesFlags(
 567                                 array(
 568                                         'newpage' => $rc->mAttribs['rc_new'],
 569                                         'minor' => $rc->mAttribs['rc_minor'],
 570                                         'unpatrolled' => $unpatrolled,
 571                                         'bot' => $rc->mAttribs['rc_bot']
 572                                 ),
 573                                 ''
 574                         );
 575                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 576                 }
 577                 # Edit/log timestamp
 578                 $this->insertTimestamp( $s, $rc );
 579                 # Bytes added or removed
 580                 if( $wgRCShowChangedSize ) {
 581                         $cd = $rc->getCharacterDifference();
 582                         if( $cd != '' ) {
 583                                 $s .= "$cd  . . ";
 584                         }
 585                 }
 586                 # User tool links
 587                 $this->insertUserRelatedLinks( $s, $rc );
 588                 # LTR/RTL direction mark
 589                 $s .= $this->getLang()->getDirMark();
 590                 # Log action text (if any)
 591                 $this->insertAction( $s, $rc );
 592                 # LTR/RTL direction mark
 593                 $s .= $this->getLang()->getDirMark();
 594                 # Edit or log comment
 595                 $this->insertComment( $s, $rc );
 596                 # Tags
 597                 $this->insertTags( $s, $rc, $classes );
 598                 # Rollback
 599                 $this->insertRollback( $s, $rc );
 600                 # For subclasses
 601                 $this->insertExtra( $s, $rc, $classes );
 602
 603                 # How many users watch this page
 604                 if( $rc->numberofWatchingusers > 0 ) {
 605                         $s .= ' ' . wfMsgExt( 'number_of_watching_users_RCview',
 606                                 array( 'parsemag', 'escape' ), $this->getLang()->formatNum( $rc->numberofWatchingusers ) );
 607                 }
 608
 609                 if( $this->watchlist ) {
 610                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 611                 }
 612
 613                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 614
 615                 wfProfileOut( __METHOD__ );
 616                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 617         }
 618 }
 619
 620
 621 /**
 622  * Generate a list of changes using an Enhanced system (uses javascript).
 623  */
 624 class EnhancedChangesList extends ChangesList {
 625         /**
 626          * Add the JavaScript file for enhanced changeslist
 627          * @return String
 628          */
 629         public function beginRecentChangesList() {
 630                 $this->rc_cache = array();
 631                 $this->rcMoveIndex = 0;
 632                 $this->rcCacheIndex = 0;
 633                 $this->lastdate = '';
 634                 $this->rclistOpen = false;
 635                 $this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
 636                 return '';
 637         }
 638         /**
 639          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 640          *
 641          * @param $baseRC RecentChange
 642          * @param $watched bool
 643          *
 644          * @return string
 645          */
 646         public function recentChangesLine( &$baseRC, $watched = false ) {
 647                 wfProfileIn( __METHOD__ );
 648
 649                 # Create a specialised object
 650                 $rc = RCCacheEntry::newFromParent( $baseRC );
 651
 652                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 653
 654                 # If it's a new day, add the headline and flush the cache
 655                 $date = $this->getLang()->date( $rc->mAttribs['rc_timestamp'], true );
 656                 $ret = '';
 657                 if( $date != $this->lastdate ) {
 658                         # Process current cache
 659                         $ret = $this->recentChangesBlock();
 660                         $this->rc_cache = array();
 661                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 662                         $this->lastdate = $date;
 663                 }
 664
 665                 # Should patrol-related stuff be shown?
 666                 if( $this->getUser()->useRCPatrol() ) {
 667                         $rc->unpatrolled = !$rc->mAttribs['rc_patrolled'];
 668                 } else {
 669                         $rc->unpatrolled = false;
 670                 }
 671
 672                 $showdifflinks = true;
 673                 # Make article link
 674                 $type = $rc->mAttribs['rc_type'];
 675                 $logType = $rc->mAttribs['rc_log_type'];
 676                 // Page moves
 677                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 678                         $msg = ( $type == RC_MOVE ) ? "1movedto2" : "1movedto2_redir";
 679                         $clink = wfMsg( $msg, Linker::linkKnown( $rc->getTitle(), null,
 680                                 array(), array( 'redirect' => 'no' ) ),
 681                                 Linker::linkKnown( $rc->getMovedToTitle() ) );
 682                 // New unpatrolled pages
 683                 } elseif( $rc->unpatrolled && $type == RC_NEW ) {
 684                         $clink = Linker::linkKnown( $rc->getTitle(), null, array(),
 685                                 array( 'rcid' => $rc->mAttribs['rc_id'] ) );
 686                 // Log entries
 687                 } elseif( $type == RC_LOG ) {
 688                         if( $logType ) {
 689                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 690                                 $clink = '(' . Linker::linkKnown( $logtitle,
 691                                         LogPage::logName( $logType ) ) . ')';
 692                         } else {
 693                                 $clink = Linker::link( $rc->getTitle() );
 694                         }
 695                         $watched = false;
 696                 // Log entries (old format) and special pages
 697                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 698                         list( $specialName, $logtype ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 699                         if ( $specialName == 'Log' ) {
 700                                 # Log updates, etc
 701                                 $logname = LogPage::logName( $logtype );
 702                                 $clink = '(' . Linker::linkKnown( $rc->getTitle(), $logname ) . ')';
 703                         } else {
 704                                 wfDebug( "Unexpected special page in recentchanges\n" );
 705                                 $clink = '';
 706                         }
 707                 // Edits
 708                 } else {
 709                         $clink = Linker::linkKnown( $rc->getTitle() );
 710                 }
 711
 712                 # Don't show unusable diff links
 713                 if ( !ChangesList::userCan($rc,Revision::DELETED_TEXT) ) {
 714                         $showdifflinks = false;
 715                 }
 716
 717                 $time = $this->getLang()->time( $rc->mAttribs['rc_timestamp'], true, true );
 718                 $rc->watched = $watched;
 719                 $rc->link = $clink;
 720                 $rc->timestamp = $time;
 721                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 722
 723                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 724                 # called too many times (50% of CPU time on RecentChanges!).
 725                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 726                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 727                 if( $rc->unpatrolled ) {
 728                         $rcIdQuery = array( 'rcid' => $rc->mAttribs['rc_id'] );
 729                 } else {
 730                         $rcIdQuery = array();
 731                 }
 732                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 733                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' =>
 734                         $lastOldid ) + $rcIdQuery;
 735
 736                 if( !$showdifflinks ) {
 737                         $curLink = $this->message['cur'];
 738                         $diffLink = $this->message['diff'];
 739                 } elseif( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 740                         if ( $type != RC_NEW ) {
 741                                 $curLink = $this->message['cur'];
 742                         } else {
 743                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 744                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 745                         }
 746                         $diffLink = $this->message['diff'];
 747                 } else {
 748                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querydiff ) );
 749                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkUrl( $querycur ) );
 750                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 751                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 752                 }
 753
 754                 # Make "last" link
 755                 if( !$showdifflinks || !$lastOldid ) {
 756                         $lastLink = $this->message['last'];
 757                 } elseif( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 758                         $lastLink = $this->message['last'];
 759                 } else {
 760                         $lastLink = Linker::linkKnown( $rc->getTitle(), $this->message['last'],
 761                                 array(), $curIdEq + array('diff' => $thisOldid, 'oldid' => $lastOldid) + $rcIdQuery );
 762                 }
 763
 764                 # Make user links
 765                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 766                         $rc->userlink = ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 767                 } else {
 768                         $rc->userlink = Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 769                         $rc->usertalklink = Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 770                 }
 771
 772                 $rc->lastlink = $lastLink;
 773                 $rc->curlink  = $curLink;
 774                 $rc->difflink = $diffLink;
 775
 776                 # Put accumulated information into the cache, for later display
 777                 # Page moves go on their own line
 778                 $title = $rc->getTitle();
 779                 $secureName = $title->getPrefixedDBkey();
 780                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 781                         # Use an @ character to prevent collision with page names
 782                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 783                 } else {
 784                         # Logs are grouped by type
 785                         if( $type == RC_LOG ){
 786                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 787                         }
 788                         if( !isset( $this->rc_cache[$secureName] ) ) {
 789                                 $this->rc_cache[$secureName] = array();
 790                         }
 791
 792                         array_push( $this->rc_cache[$secureName], $rc );
 793                 }
 794
 795                 wfProfileOut( __METHOD__ );
 796
 797                 return $ret;
 798         }
 799
 800         /**
 801          * Enhanced RC group
 802          */
 803         protected function recentChangesBlockGroup( $block ) {
 804                 global $wgRCShowChangedSize;
 805
 806                 wfProfileIn( __METHOD__ );
 807
 808                 # Add the namespace and title of the block as part of the class
 809                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 810                         # Log entry
 811                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 812                 } else {
 813                         $classes = 'mw-collapsible mw-collapsed mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 814                 }
 815                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 816                         Html::openElement( 'tr' );
 817
 818                 # Collate list of users
 819                 $userlinks = array();
 820                 # Other properties
 821                 $unpatrolled = false;
 822                 $isnew = false;
 823                 $curId = $currentRevision = 0;
 824                 # Some catalyst variables...
 825                 $namehidden = true;
 826                 $allLogs = true;
 827                 foreach( $block as $rcObj ) {
 828                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 829                         if( $rcObj->mAttribs['rc_new'] ) {
 830                                 $isnew = true;
 831                         }
 832                         // If all log actions to this page were hidden, then don't
 833                         // give the name of the affected page for this block!
 834                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 835                                 $namehidden = false;
 836                         }
 837                         $u = $rcObj->userlink;
 838                         if( !isset( $userlinks[$u] ) ) {
 839                                 $userlinks[$u] = 0;
 840                         }
 841                         if( $rcObj->unpatrolled ) {
 842                                 $unpatrolled = true;
 843                         }
 844                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 845                                 $allLogs = false;
 846                         }
 847                         # Get the latest entry with a page_id and oldid
 848                         # since logs may not have these.
 849                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 850                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 851                         }
 852                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 853                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 854                         }
 855
 856                         $bot = $rcObj->mAttribs['rc_bot'];
 857                         $userlinks[$u]++;
 858                 }
 859
 860                 # Sort the list and convert to text
 861                 krsort( $userlinks );
 862                 asort( $userlinks );
 863                 $users = array();
 864                 foreach( $userlinks as $userlink => $count) {
 865                         $text = $userlink;
 866                         $text .= $this->getLang()->getDirMark();
 867                         if( $count > 1 ) {
 868                                 $text .= ' (' . $this->getLang()->formatNum( $count ) . '×)';
 869                         }
 870                         array_push( $users, $text );
 871                 }
 872
 873                 $users = ' <span class="changedby">[' .
 874                         implode( $this->message['semicolon-separator'], $users ) . ']</span>';
 875
 876                 # Title for <a> tags
 877                 $expandTitle = htmlspecialchars( wfMsg( 'rc-enhanced-expand' ) );
 878                 $closeTitle = htmlspecialchars( wfMsg( 'rc-enhanced-hide' ) );
 879
 880                 $tl = "<span class='mw-collapsible-toggle'>"
 881                         . "<span class='mw-rc-openarrow'>"
 882                         . "<a href='#' title='$expandTitle'>{$this->sideArrow()}</a>"
 883                         . "</span><span class='mw-rc-closearrow'>"
 884                         . "<a href='#' title='$closeTitle'>{$this->downArrow()}</a>"
 885                         . "</span></span>";
 886                 $r .= "<td>$tl</td>";
 887
 888                 # Main line
 889                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 890                         'newpage' => $isnew,
 891                         'minor' => false,
 892                         'unpatrolled' => $unpatrolled,
 893                         'bot' => $bot ,
 894                 ) );
 895
 896                 # Timestamp
 897                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td>';
 898
 899                 # Article link
 900                 if( $namehidden ) {
 901                         $r .= ' <span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
 902                 } elseif( $allLogs ) {
 903                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 904                 } else {
 905                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 906                 }
 907
 908                 $r .= $this->getLang()->getDirMark();
 909
 910                 $queryParams['curid'] = $curId;
 911                 # Changes message
 912                 $n = count($block);
 913                 static $nchanges = array();
 914                 if ( !isset( $nchanges[$n] ) ) {
 915                         $nchanges[$n] = wfMsgExt( 'nchanges', array( 'parsemag', 'escape' ), $this->getLang()->formatNum( $n ) );
 916                 }
 917                 # Total change link
 918                 $r .= ' ';
 919                 if( !$allLogs ) {
 920                         $r .= '(';
 921                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT ) ) {
 922                                 $r .= $nchanges[$n];
 923                         } elseif( $isnew ) {
 924                                 $r .= $nchanges[$n];
 925                         } else {
 926                                 $params = $queryParams;
 927                                 $params['diff'] = $currentRevision;
 928                                 $params['oldid'] = $oldid;
 929
 930                                 $r .= Linker::link(
 931                                         $block[0]->getTitle(),
 932                                         $nchanges[$n],
 933                                         array(),
 934                                         $params,
 935                                         array( 'known', 'noclasses' )
 936                                 );
 937                         }
 938                 }
 939
 940                 # History
 941                 if( $allLogs ) {
 942                         // don't show history link for logs
 943                 } elseif( $namehidden || !$block[0]->getTitle()->exists() ) {
 944                         $r .= $this->message['pipe-separator'] . $this->message['hist'] . ')';
 945                 } else {
 946                         $params = $queryParams;
 947                         $params['action'] = 'history';
 948
 949                         $r .= $this->message['pipe-separator'] .
 950                                 Linker::linkKnown(
 951                                         $block[0]->getTitle(),
 952                                         $this->message['hist'],
 953                                         array(),
 954                                         $params
 955                                 ) . ')';
 956                 }
 957                 $r .= ' . . ';
 958
 959                 # Character difference (does not apply if only log items)
 960                 if( $wgRCShowChangedSize && !$allLogs ) {
 961                         $last = 0;
 962                         $first = count($block) - 1;
 963                         # Some events (like logs) have an "empty" size, so we need to skip those...
 964                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 965                                 $last++;
 966                         }
 967                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 968                                 $first--;
 969                         }
 970                         # Get net change
 971                         $chardiff = $rcObj->getCharacterDifference( $block[$first]->mAttribs['rc_old_len'],
 972                                 $block[$last]->mAttribs['rc_new_len'] );
 973
 974                         if( $chardiff == '' ) {
 975                                 $r .= ' ';
 976                         } else {
 977                                 $r .= ' ' . $chardiff. ' . . ';
 978                         }
 979                 }
 980
 981                 $r .= $users;
 982                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
 983
 984                 # Sub-entries
 985                 foreach( $block as $rcObj ) {
 986                         # Classes to apply -- TODO implement
 987                         $classes = array();
 988                         $type = $rcObj->mAttribs['rc_type'];
 989
 990                         #$r .= '<tr><td valign="top">'.$this->spacerArrow();
 991                         $r .= '<tr><td></td><td class="mw-enhanced-rc">';
 992                         $r .= $this->recentChangesFlags( array(
 993                                 'newpage' => $rcObj->mAttribs['rc_new'],
 994                                 'minor' => $rcObj->mAttribs['rc_minor'],
 995                                 'unpatrolled' => $rcObj->unpatrolled,
 996                                 'bot' => $rcObj->mAttribs['rc_bot'],
 997                         ) );
 998                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
 999
1000                         $params = $queryParams;
1001
1002                         if( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
1003                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
1004                         }
1005
1006                         # Log timestamp
1007                         if( $type == RC_LOG ) {
1008                                 $link = $rcObj->timestamp;
1009                         # Revision link
1010                         } elseif( !ChangesList::userCan($rcObj,Revision::DELETED_TEXT) ) {
1011                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
1012                         } else {
1013                                 if ( $rcObj->unpatrolled && $type == RC_NEW) {
1014                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
1015                                 }
1016
1017                                 $link = Linker::linkKnown(
1018                                                 $rcObj->getTitle(),
1019                                                 $rcObj->timestamp,
1020                                                 array(),
1021                                                 $params
1022                                         );
1023                                 if( $this->isDeleted($rcObj,Revision::DELETED_TEXT) )
1024                                         $link = '<span class="history-deleted">'.$link.'</span> ';
1025                         }
1026                         $r .= $link . '</span>';
1027
1028                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1029                                 $r .= ' (';
1030                                 $r .= $rcObj->curlink;
1031                                 $r .= $this->message['pipe-separator'];
1032                                 $r .= $rcObj->lastlink;
1033                                 $r .= ')';
1034                         }
1035                         $r .= ' . . ';
1036
1037                         # Character diff
1038                         if( $wgRCShowChangedSize && $rcObj->getCharacterDifference() ) {
1039                                 $r .= $rcObj->getCharacterDifference() . ' . . ' ;
1040                         }
1041
1042                         # User links
1043                         $r .= $rcObj->userlink;
1044                         $r .= $rcObj->usertalklink;
1045                         // log action
1046                         $this->insertAction( $r, $rcObj );
1047                         // log comment
1048                         $this->insertComment( $r, $rcObj );
1049                         # Rollback
1050                         $this->insertRollback( $r, $rcObj );
1051                         # Tags
1052                         $this->insertTags( $r, $rcObj, $classes );
1053
1054                         $r .= "</td></tr>\n";
1055                 }
1056                 $r .= "</table>\n";
1057
1058                 $this->rcCacheIndex++;
1059
1060                 wfProfileOut( __METHOD__ );
1061
1062                 return $r;
1063         }
1064
1065         /**
1066          * Generate HTML for an arrow or placeholder graphic
1067          * @param $dir String: one of '', 'd', 'l', 'r'
1068          * @param $alt String: text
1069          * @param $title String: text
1070          * @return String: HTML <img> tag
1071          */
1072         protected function arrow( $dir, $alt='', $title='' ) {
1073                 global $wgStylePath;
1074                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1075                 $encAlt = htmlspecialchars( $alt );
1076                 $encTitle = htmlspecialchars( $title );
1077                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1078         }
1079
1080         /**
1081          * Generate HTML for a right- or left-facing arrow,
1082          * depending on language direction.
1083          * @return String: HTML <img> tag
1084          */
1085         protected function sideArrow() {
1086                 global $wgContLang;
1087                 $dir = $wgContLang->isRTL() ? 'l' : 'r';
1088                 return $this->arrow( $dir, '+', wfMsg( 'rc-enhanced-expand' ) );
1089         }
1090
1091         /**
1092          * Generate HTML for a down-facing arrow
1093          * depending on language direction.
1094          * @return String: HTML <img> tag
1095          */
1096         protected function downArrow() {
1097                 return $this->arrow( 'd', '-', wfMsg( 'rc-enhanced-hide' ) );
1098         }
1099
1100         /**
1101          * Generate HTML for a spacer image
1102          * @return String: HTML <img> tag
1103          */
1104         protected function spacerArrow() {
1105                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1106         }
1107
1108         /**
1109          * Enhanced RC ungrouped line.
1110          *
1111          * @param $rcObj RecentChange
1112          * @return String: a HTML formated line (generated using $r)
1113          */
1114         protected function recentChangesBlockLine( $rcObj ) {
1115                 global $wgRCShowChangedSize;
1116
1117                 wfProfileIn( __METHOD__ );
1118                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1119
1120                 $type = $rcObj->mAttribs['rc_type'];
1121                 $logType = $rcObj->mAttribs['rc_log_type'];
1122                 if( $logType ) {
1123                         # Log entry
1124                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1125                 } else {
1126                         $classes = 'mw-enhanced-rc ' . Sanitizer::escapeClass( 'mw-changeslist-ns' . $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1127                 }
1128                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1129                         Html::openElement( 'tr' );
1130
1131                 $r .= '<td class="mw-enhanced-rc">' . $this->spacerArrow();
1132                 # Flag and Timestamp
1133                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1134                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1135                 } else {
1136                         $r .= $this->recentChangesFlags( array(
1137                                 'newpage' => $type == RC_NEW,
1138                                 'mino' => $rcObj->mAttribs['rc_minor'],
1139                                 'unpatrolled' => $rcObj->unpatrolled,
1140                                 'bot' => $rcObj->mAttribs['rc_bot'],
1141                         ) );
1142                 }
1143                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td>';
1144                 # Article or log link
1145                 if( $logType ) {
1146                         $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
1147                         $logname = LogPage::logName( $logType );
1148                         $r .= '(' . Linker::linkKnown( $logtitle, htmlspecialchars( $logname ) ) . ')';
1149                 } else {
1150                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1151                 }
1152                 # Diff and hist links
1153                 if ( $type != RC_LOG ) {
1154                         $r .= ' ('. $rcObj->difflink . $this->message['pipe-separator'];
1155                         $query['action'] = 'history';
1156                         $r .= Linker::linkKnown(
1157                                 $rcObj->getTitle(),
1158                                 $this->message['hist'],
1159                                 array(),
1160                                 $query
1161                         ) . ')';
1162                 }
1163                 $r .= ' . . ';
1164                 # Character diff
1165                 if( $wgRCShowChangedSize && ($cd = $rcObj->getCharacterDifference()) ) {
1166                         $r .= "$cd . . ";
1167                 }
1168                 # User/talk
1169                 $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1170                 # Log action (if any)
1171                 if( $logType ) {
1172                         if( $this->isDeleted($rcObj,LogPage::DELETED_ACTION) ) {
1173                                 $r .= ' <span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
1174                         } else {
1175                                 $r .= ' ' . LogPage::actionText( $logType, $rcObj->mAttribs['rc_log_action'], $rcObj->getTitle(),
1176                                         $this->getSkin(), LogPage::extractParams( $rcObj->mAttribs['rc_params'] ), true, true );
1177                         }
1178                 }
1179                 $this->insertComment( $r, $rcObj );
1180                 $this->insertRollback( $r, $rcObj );
1181                 # Tags
1182                 $classes = explode( ' ', $classes );
1183                 $this->insertTags( $r, $rcObj, $classes );
1184                 # Show how many people are watching this if enabled
1185                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1186
1187                 $r .= "</td></tr></table>\n";
1188
1189                 wfProfileOut( __METHOD__ );
1190
1191                 return $r;
1192         }
1193
1194         /**
1195          * If enhanced RC is in use, this function takes the previously cached
1196          * RC lines, arranges them, and outputs the HTML
1197          *
1198          * @return string
1199          */
1200         protected function recentChangesBlock() {
1201                 if( count ( $this->rc_cache ) == 0 ) {
1202                         return '';
1203                 }
1204
1205                 wfProfileIn( __METHOD__ );
1206
1207                 $blockOut = '';
1208                 foreach( $this->rc_cache as $block ) {
1209                         if( count( $block ) < 2 ) {
1210                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1211                         } else {
1212                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1213                         }
1214                 }
1215
1216                 wfProfileOut( __METHOD__ );
1217
1218                 return '<div>'.$blockOut.'</div>';
1219         }
1220
1221         /**
1222          * Returns text for the end of RC
1223          * If enhanced RC is in use, returns pretty much all the text
1224          */
1225         public function endRecentChangesList() {
1226                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1227         }
1228
1229 }