includes/ChangesList.php

   1 <?php
   2 /**
   3  * Classes to show lists of changes.
   4  *
   5  * These can be:
   6  * - watchlist
   7  * - related changes
   8  * - recent changes
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  *
  25  * @file
  26  */
  27
  28 /**
  29  * @todo document
  30  */
  31 class RCCacheEntry extends RecentChange {
  32         var $secureName, $link;
  33         var $curlink , $difflink, $lastlink, $usertalklink, $versionlink;
  34         var $userlink, $timestamp, $watched;
  35
  36         /**
  37          * @param $rc RecentChange
  38          * @return RCCacheEntry
  39          */
  40         static function newFromParent( $rc ) {
  41                 $rc2 = new RCCacheEntry;
  42                 $rc2->mAttribs = $rc->mAttribs;
  43                 $rc2->mExtra = $rc->mExtra;
  44                 return $rc2;
  45         }
  46 }
  47
  48 /**
  49  * Base class for all changes lists
  50  */
  51 class ChangesList extends ContextSource {
  52
  53         /**
  54          * @var Skin
  55          */
  56         public $skin;
  57
  58         protected $watchlist = false;
  59
  60         protected $message;
  61
  62         /**
  63          * Changeslist contructor
  64          *
  65          * @param $obj Skin or IContextSource
  66          */
  67         public function __construct( $obj ) {
  68                 if ( $obj instanceof IContextSource ) {
  69                         $this->setContext( $obj );
  70                         $this->skin = $obj->getSkin();
  71                 } else {
  72                         $this->setContext( $obj->getContext() );
  73                         $this->skin = $obj;
  74                 }
  75                 $this->preCacheMessages();
  76         }
  77
  78         /**
  79          * Fetch an appropriate changes list class for the main context
  80          * This first argument used to be an User object.
  81          *
  82          * @deprecated in 1.18; use newFromContext() instead
  83          * @param $unused string|User Unused
  84          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  85          */
  86         public static function newFromUser( $unused ) {
  87                 wfDeprecated( __METHOD__, '1.18' );
  88                 return self::newFromContext( RequestContext::getMain() );
  89         }
  90
  91         /**
  92          * Fetch an appropriate changes list class for the specified context
  93          * Some users might want to use an enhanced list format, for instance
  94          *
  95          * @param $context IContextSource to use
  96          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  97          */
  98         public static function newFromContext( IContextSource $context ) {
  99                 $user = $context->getUser();
 100                 $sk = $context->getSkin();
 101                 $list = null;
 102                 if( wfRunHooks( 'FetchChangesList', array( $user, &$sk, &$list ) ) ) {
 103                         $new = $context->getRequest()->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
 104                         return $new ? new EnhancedChangesList( $context ) : new OldChangesList( $context );
 105                 } else {
 106                         return $list;
 107                 }
 108         }
 109
 110         /**
 111          * Sets the list to use a "<li class='watchlist-(namespace)-(page)'>" tag
 112          * @param $value Boolean
 113          */
 114         public function setWatchlistDivs( $value = true ) {
 115                 $this->watchlist = $value;
 116         }
 117
 118         /**
 119          * As we use the same small set of messages in various methods and that
 120          * they are called often, we call them once and save them in $this->message
 121          */
 122         private function preCacheMessages() {
 123                 if( !isset( $this->message ) ) {
 124                         foreach ( explode( ' ', 'cur diff hist last blocklink history ' .
 125                         'semicolon-separator pipe-separator' ) as $msg ) {
 126                                 $this->message[$msg] = $this->msg( $msg )->escaped();
 127                         }
 128                 }
 129         }
 130
 131         /**
 132          * Returns the appropriate flags for new page, minor change and patrolling
 133          * @param $flags Array Associative array of 'flag' => Bool
 134          * @param $nothing String to use for empty space
 135          * @return String
 136          */
 137         protected function recentChangesFlags( $flags, $nothing = '&#160;' ) {
 138                 $f = '';
 139                 foreach( array( 'newpage', 'minor', 'bot', 'unpatrolled' ) as $flag ){
 140                         $f .= isset( $flags[$flag] ) && $flags[$flag]
 141                                 ? self::flag( $flag )
 142                                 : $nothing;
 143                 }
 144                 return $f;
 145         }
 146
 147         /**
 148          * Provide the "<abbr>" element appropriate to a given abbreviated flag,
 149          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 150          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 151          * "!" respectively, plus it will have an appropriate title and class.
 152          *
 153          * @param $flag String: 'newpage', 'unpatrolled', 'minor', or 'bot'
 154          * @return String: Raw HTML
 155          */
 156         public static function flag( $flag ) {
 157                 static $messages = null;
 158                 if ( is_null( $messages ) ) {
 159                         $messages = array(
 160                                 'newpage' => array( 'newpageletter', 'recentchanges-label-newpage' ),
 161                                 'minoredit' => array( 'minoreditletter', 'recentchanges-label-minor' ),
 162                                 'botedit' => array( 'boteditletter', 'recentchanges-label-bot' ),
 163                                 'unpatrolled' => array( 'unpatrolledletter', 'recentchanges-label-unpatrolled' ),
 164                         );
 165                         foreach( $messages as &$value ) {
 166                                 $value[0] = wfMessage( $value[0] )->escaped();
 167                                 $value[1] = wfMessage( $value[1] )->escaped();
 168                         }
 169                 }
 170
 171                 # Inconsistent naming, bleh
 172                 $map = array(
 173                         'newpage' => 'newpage',
 174                         'minor' => 'minoredit',
 175                         'bot' => 'botedit',
 176                         'unpatrolled' => 'unpatrolled',
 177                         'minoredit' => 'minoredit',
 178                         'botedit' => 'botedit',
 179                 );
 180                 $flag = $map[$flag];
 181
 182                 return "<abbr class='$flag' title='" . $messages[$flag][1] . "'>" . $messages[$flag][0] . '</abbr>';
 183         }
 184
 185         /**
 186          * Returns text for the start of the tabular part of RC
 187          * @return String
 188          */
 189         public function beginRecentChangesList() {
 190                 $this->rc_cache = array();
 191                 $this->rcMoveIndex = 0;
 192                 $this->rcCacheIndex = 0;
 193                 $this->lastdate = '';
 194                 $this->rclistOpen = false;
 195                 $this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
 196                 return '';
 197         }
 198
 199         /**
 200          * Show formatted char difference
 201          * @param $old Integer: bytes
 202          * @param $new Integer: bytes
 203          * @param $context IContextSource context to use
 204          * @return String
 205          */
 206         public static function showCharacterDifference( $old, $new, IContextSource $context = null ) {
 207                 global $wgRCChangedSizeThreshold, $wgMiserMode;
 208
 209                 if ( !$context ) {
 210                         $context = RequestContext::getMain();
 211                 }
 212
 213                 $new = (int)$new;
 214                 $old = (int)$old;
 215                 $szdiff = $new - $old;
 216
 217                 $lang = $context->getLanguage();
 218                 $code = $lang->getCode();
 219                 static $fastCharDiff = array();
 220                 if ( !isset($fastCharDiff[$code]) ) {
 221                         $fastCharDiff[$code] = $wgMiserMode || $context->msg( 'rc-change-size' )->plain() === '$1';
 222                 }
 223
 224                 $formattedSize = $lang->formatNum( $szdiff );
 225
 226                 if ( !$fastCharDiff[$code] ) {
 227                         $formattedSize = $context->msg( 'rc-change-size', $formattedSize )->text();
 228                 }
 229
 230                 if( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 231                         $tag = 'strong';
 232                 } else {
 233                         $tag = 'span';
 234                 }
 235
 236                 if ( $szdiff === 0 ) {
 237                         $formattedSizeClass = 'mw-plusminus-null';
 238                 }
 239                 if ( $szdiff > 0 ) {
 240                         $formattedSize = '+' . $formattedSize;
 241                         $formattedSizeClass = 'mw-plusminus-pos';
 242                 }
 243                 if ( $szdiff < 0 ) {
 244                         $formattedSizeClass = 'mw-plusminus-neg';
 245                 }
 246
 247                 $formattedTotalSize = $context->msg( 'rc-change-size-new' )->numParams( $new )->text();
 248
 249                 return Html::element( $tag,
 250                         array( 'dir' => 'ltr', 'class' => $formattedSizeClass, 'title' => $formattedTotalSize ),
 251                         $context->msg( 'parentheses', $formattedSize )->plain() ) . $lang->getDirMark();
 252         }
 253
 254         /**
 255          * Format the character difference of one or several changes.
 256          *
 257          * @param $old RecentChange
 258          * @param $new RecentChange last change to use, if not provided, $old will be used
 259          * @return string HTML fragment
 260          */
 261         public function formatCharacterDifference( RecentChange $old, RecentChange $new = null ) {
 262                 $oldlen = $old->mAttribs['rc_old_len'];
 263
 264                 if ( $new ) {
 265                         $newlen = $new->mAttribs['rc_new_len'];
 266                 } else {
 267                         $newlen = $old->mAttribs['rc_new_len'];
 268                 }
 269
 270                 if( $oldlen === null || $newlen === null ) {
 271                         return '';
 272                 }
 273
 274                 return self::showCharacterDifference( $oldlen, $newlen, $this->getContext() );
 275         }
 276
 277         /**
 278          * Returns text for the end of RC
 279          * @return String
 280          */
 281         public function endRecentChangesList() {
 282                 if( $this->rclistOpen ) {
 283                         return "</ul>\n";
 284                 } else {
 285                         return '';
 286                 }
 287         }
 288
 289         public function insertDateHeader( &$s, $rc_timestamp ) {
 290                 # Make date header if necessary
 291                 $date = $this->getLanguage()->userDate( $rc_timestamp, $this->getUser() );
 292                 if( $date != $this->lastdate ) {
 293                         if( $this->lastdate != '' ) {
 294                                 $s .= "</ul>\n";
 295                         }
 296                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 297                         $this->lastdate = $date;
 298                         $this->rclistOpen = true;
 299                 }
 300         }
 301
 302         public function insertLog( &$s, $title, $logtype ) {
 303                 $page = new LogPage( $logtype );
 304                 $logname = $page->getName()->escaped();
 305                 $s .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $title, $logname ) )->escaped();
 306         }
 307
 308         /**
 309          * @param $s
 310          * @param $rc RecentChange
 311          * @param $unpatrolled
 312          */
 313         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 314                 # Diff link
 315                 if( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 316                         $diffLink = $this->message['diff'];
 317                 } elseif ( !self::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 318                         $diffLink = $this->message['diff'];
 319                 } else {
 320                         $query = array(
 321                                 'curid' => $rc->mAttribs['rc_cur_id'],
 322                                 'diff'  => $rc->mAttribs['rc_this_oldid'],
 323                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 324                         );
 325
 326                         if( $unpatrolled ) {
 327                                 $query['rcid'] = $rc->mAttribs['rc_id'];
 328                         };
 329
 330                         $diffLink = Linker::linkKnown(
 331                                 $rc->getTitle(),
 332                                 $this->message['diff'],
 333                                 array( 'tabindex' => $rc->counter ),
 334                                 $query
 335                         );
 336                 }
 337                 $diffhist = $diffLink . $this->message['pipe-separator'];
 338                 # History link
 339                 $diffhist .= Linker::linkKnown(
 340                         $rc->getTitle(),
 341                         $this->message['hist'],
 342                         array(),
 343                         array(
 344                                 'curid' => $rc->mAttribs['rc_cur_id'],
 345                                 'action' => 'history'
 346                         )
 347                 );
 348                 $s .= $this->msg( 'parentheses' )->rawParams( $diffhist )->escaped() . ' <span class="mw-changeslist-separator">. .</span> ';
 349         }
 350
 351         /**
 352          * @param $s
 353          * @param $rc RecentChange
 354          * @param $unpatrolled
 355          * @param $watched
 356          */
 357         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 358                 # If it's a new article, there is no diff link, but if it hasn't been
 359                 # patrolled yet, we need to give users a way to do so
 360                 $params = array();
 361
 362                 if ( $unpatrolled && $rc->mAttribs['rc_type'] == RC_NEW ) {
 363                         $params['rcid'] = $rc->mAttribs['rc_id'];
 364                 }
 365
 366                 $articlelink = Linker::linkKnown(
 367                         $rc->getTitle(),
 368                         null,
 369                         array( 'class' => 'mw-changeslist-title' ),
 370                         $params
 371                 );
 372                 if( $this->isDeleted($rc,Revision::DELETED_TEXT) ) {
 373                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 374                 }
 375                 # To allow for boldening pages watched by this user
 376                 $articlelink = "<span class=\"mw-title\">{$articlelink}</span>";
 377                 # RTL/LTR marker
 378                 $articlelink .= $this->getLanguage()->getDirMark();
 379
 380                 wfRunHooks( 'ChangesListInsertArticleLink',
 381                         array(&$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched) );
 382
 383                 $s .= " $articlelink";
 384         }
 385
 386         /**
 387          * @param $s
 388          * @param $rc RecentChange
 389          */
 390         public function insertTimestamp( &$s, $rc ) {
 391                 $s .= $this->message['semicolon-separator'] . '<span class="mw-changeslist-date">' .
 392                         $this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() ) . '</span> <span class="mw-changeslist-separator">. .</span> ';
 393         }
 394
 395         /**
 396          * Insert links to user page, user talk page and eventually a blocking link
 397          *
 398          * @param &$s String HTML to update
 399          * @param &$rc RecentChange
 400          */
 401         public function insertUserRelatedLinks( &$s, &$rc ) {
 402                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 403                         $s .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 404                 } else {
 405                         $s .= $this->getLanguage()->getDirMark() . Linker::userLink( $rc->mAttribs['rc_user'],
 406                                 $rc->mAttribs['rc_user_text'] );
 407                         $s .= Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 408                 }
 409         }
 410
 411         /**
 412          * Insert a formatted action
 413          *
 414          * @param $rc RecentChange
 415          * @return string
 416          */
 417         public function insertLogEntry( $rc ) {
 418                 $formatter = LogFormatter::newFromRow( $rc->mAttribs );
 419                 $formatter->setContext( $this->getContext() );
 420                 $formatter->setShowUserToolLinks( true );
 421                 $mark = $this->getLanguage()->getDirMark();
 422                 return $formatter->getActionText() . " $mark" . $formatter->getComment();
 423         }
 424
 425         /**
 426          * Insert a formatted comment
 427          * @param $rc RecentChange
 428          * @return string
 429          */
 430         public function insertComment( $rc ) {
 431                 if( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 432                         if( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 433                                 return ' <span class="history-deleted">' . $this->msg( 'rev-deleted-comment' )->escaped() . '</span>';
 434                         } else {
 435                                 return Linker::commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 436                         }
 437                 }
 438         }
 439
 440         /**
 441          * Check whether to enable recent changes patrol features
 442          * @return Boolean
 443          */
 444         public static function usePatrol() {
 445                 global $wgUser;
 446                 return $wgUser->useRCPatrol();
 447         }
 448
 449         /**
 450          * Returns the string which indicates the number of watching users
 451          * @return string
 452          */
 453         protected function numberofWatchingusers( $count ) {
 454                 static $cache = array();
 455                 if( $count > 0 ) {
 456                         if( !isset( $cache[$count] ) ) {
 457                                 $cache[$count] = $this->msg( 'number_of_watching_users_RCview' )->numParams( $count )->escaped();
 458                         }
 459                         return $cache[$count];
 460                 } else {
 461                         return '';
 462                 }
 463         }
 464
 465         /**
 466          * Determine if said field of a revision is hidden
 467          * @param $rc RCCacheEntry
 468          * @param $field Integer: one of DELETED_* bitfield constants
 469          * @return Boolean
 470          */
 471         public static function isDeleted( $rc, $field ) {
 472                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 473         }
 474
 475         /**
 476          * Determine if the current user is allowed to view a particular
 477          * field of this revision, if it's marked as deleted.
 478          * @param $rc RCCacheEntry
 479          * @param $field Integer
 480          * @param $user User object to check, or null to use $wgUser
 481          * @return Boolean
 482          */
 483         public static function userCan( $rc, $field, User $user = null ) {
 484                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 485                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 486                 } else {
 487                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 488                 }
 489         }
 490
 491         /**
 492          * @param $link string
 493          * @param $watched bool
 494          * @return string
 495          */
 496         protected function maybeWatchedLink( $link, $watched = false ) {
 497                 if( $watched ) {
 498                         return '<strong class="mw-watched">' . $link . '</strong>';
 499                 } else {
 500                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 501                 }
 502         }
 503
 504         /** Inserts a rollback link
 505          *
 506          * @param $s string
 507          * @param $rc RecentChange
 508          */
 509         public function insertRollback( &$s, &$rc ) {
 510                 if( $rc->mAttribs['rc_type'] != RC_NEW && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 511                         $page = $rc->getTitle();
 512                         /** Check for rollback and edit permissions, disallow special pages, and only
 513                           * show a link on the top-most revision */
 514                         if ( $this->getUser()->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 515                         {
 516                                 $rev = new Revision( array(
 517                                         'title'     => $page,
 518                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 519                                         'user'      => $rc->mAttribs['rc_user'],
 520                                         'user_text' => $rc->mAttribs['rc_user_text'],
 521                                         'deleted'   => $rc->mAttribs['rc_deleted']
 522                                 ) );
 523                                 $s .= ' '.Linker::generateRollback( $rev, $this->getContext() );
 524                         }
 525                 }
 526         }
 527
 528         /**
 529          * @param $s string
 530          * @param $rc RecentChange
 531          * @param $classes
 532          */
 533         public function insertTags( &$s, &$rc, &$classes ) {
 534                 if ( empty($rc->mAttribs['ts_tags']) )
 535                         return;
 536
 537                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 538                 $classes = array_merge( $classes, $newClasses );
 539                 $s .= ' ' . $tagSummary;
 540         }
 541
 542         public function insertExtra( &$s, &$rc, &$classes ) {
 543                 ## Empty, used for subclassers to add anything special.
 544         }
 545
 546         protected function showAsUnpatrolled( RecentChange $rc ) {
 547                 $unpatrolled = false;
 548                 if ( !$rc->mAttribs['rc_patrolled'] ) {
 549                         if ( $this->getUser()->useRCPatrol() ) {
 550                                 $unpatrolled = true;
 551                         } elseif ( $this->getUser()->useNPPatrol() && $rc->mAttribs['rc_type'] == RC_NEW ) {
 552                                 $unpatrolled = true;
 553                         }
 554                 }
 555                 return $unpatrolled;
 556         }
 557 }
 558
 559
 560 /**
 561  * Generate a list of changes using the good old system (no javascript)
 562  */
 563 class OldChangesList extends ChangesList {
 564         /**
 565          * Format a line using the old system (aka without any javascript).
 566          *
 567          * @param $rc RecentChange, passed by reference
 568          * @param $watched Bool (default false)
 569          * @param $linenumber Int (default null)
 570          * @return string
 571          */
 572         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 573                 global $wgRCShowChangedSize;
 574                 wfProfileIn( __METHOD__ );
 575
 576                 # Should patrol-related stuff be shown?
 577                 $unpatrolled = $this->showAsUnpatrolled( $rc );
 578
 579                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 580                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 581
 582                 $s = '';
 583                 $classes = array();
 584                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 585                 if( $linenumber ) {
 586                         if( $linenumber & 1 ) {
 587                                 $classes[] = 'mw-line-odd';
 588                         }
 589                         else {
 590                                 $classes[] = 'mw-line-even';
 591                         }
 592                 }
 593
 594                 // Indicate watched status on the line to allow for more
 595                 // comprehensive styling.
 596                 $classes[] = $watched ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 597
 598                 // Moved pages (very very old, not supported anymore)
 599                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 600                 // Log entries
 601                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 602                         $logtitle = SpecialPage::getTitleFor( 'Log', $rc->mAttribs['rc_log_type'] );
 603                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 604                 // Log entries (old format) or log targets, and special pages
 605                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 606                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 607                         if( $name == 'Log' ) {
 608                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 609                         }
 610                 // Regular entries
 611                 } else {
 612                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 613                         # M, N, b and ! (minor, new, bot and unpatrolled)
 614                         $s .= $this->recentChangesFlags(
 615                                 array(
 616                                         'newpage' => $rc->mAttribs['rc_type'] == RC_NEW,
 617                                         'minor' => $rc->mAttribs['rc_minor'],
 618                                         'unpatrolled' => $unpatrolled,
 619                                         'bot' => $rc->mAttribs['rc_bot']
 620                                 ),
 621                                 ''
 622                         );
 623                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 624                 }
 625                 # Edit/log timestamp
 626                 $this->insertTimestamp( $s, $rc );
 627                 # Bytes added or removed
 628                 if ( $wgRCShowChangedSize ) {
 629                         $cd = $this->formatCharacterDifference( $rc );
 630                         if ( $cd !== '' ) {
 631                                 $s .= $cd . '  <span class="mw-changeslist-separator">. .</span> ';
 632                         }
 633                 }
 634
 635                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 636                         $s .= $this->insertLogEntry( $rc );
 637                 } else {
 638                         # User tool links
 639                         $this->insertUserRelatedLinks( $s, $rc );
 640                         # LTR/RTL direction mark
 641                         $s .= $this->getLanguage()->getDirMark();
 642                         $s .= $this->insertComment( $rc );
 643                 }
 644
 645                 # Tags
 646                 $this->insertTags( $s, $rc, $classes );
 647                 # Rollback
 648                 $this->insertRollback( $s, $rc );
 649                 # For subclasses
 650                 $this->insertExtra( $s, $rc, $classes );
 651
 652                 # How many users watch this page
 653                 if( $rc->numberofWatchingusers > 0 ) {
 654                         $s .= ' ' . $this->numberofWatchingusers( $rc->numberofWatchingusers );
 655                 }
 656
 657                 if( $this->watchlist ) {
 658                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 659                 }
 660
 661                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 662
 663                 wfProfileOut( __METHOD__ );
 664                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 665         }
 666 }
 667
 668
 669 /**
 670  * Generate a list of changes using an Enhanced system (uses javascript).
 671  */
 672 class EnhancedChangesList extends ChangesList {
 673
 674         protected $rc_cache;
 675
 676         /**
 677          * Add the JavaScript file for enhanced changeslist
 678          * @return String
 679          */
 680         public function beginRecentChangesList() {
 681                 $this->rc_cache = array();
 682                 $this->rcMoveIndex = 0;
 683                 $this->rcCacheIndex = 0;
 684                 $this->lastdate = '';
 685                 $this->rclistOpen = false;
 686                 $this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
 687                 return '';
 688         }
 689         /**
 690          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 691          *
 692          * @param $baseRC RecentChange
 693          * @param $watched bool
 694          *
 695          * @return string
 696          */
 697         public function recentChangesLine( &$baseRC, $watched = false ) {
 698                 wfProfileIn( __METHOD__ );
 699
 700                 # Create a specialised object
 701                 $rc = RCCacheEntry::newFromParent( $baseRC );
 702
 703                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 704
 705                 # If it's a new day, add the headline and flush the cache
 706                 $date = $this->getLanguage()->userDate( $rc->mAttribs['rc_timestamp'], $this->getUser() );
 707                 $ret = '';
 708                 if( $date != $this->lastdate ) {
 709                         # Process current cache
 710                         $ret = $this->recentChangesBlock();
 711                         $this->rc_cache = array();
 712                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 713                         $this->lastdate = $date;
 714                 }
 715
 716                 # Should patrol-related stuff be shown?
 717                 $rc->unpatrolled = $this->showAsUnpatrolled( $rc );
 718
 719                 $showdifflinks = true;
 720                 # Make article link
 721                 $type = $rc->mAttribs['rc_type'];
 722                 $logType = $rc->mAttribs['rc_log_type'];
 723                 // Page moves, very old style, not supported anymore
 724                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 725                 // New unpatrolled pages
 726                 } elseif( $rc->unpatrolled && $type == RC_NEW ) {
 727                         $clink = Linker::linkKnown( $rc->getTitle(), null, array(),
 728                                 array( 'rcid' => $rc->mAttribs['rc_id'] ) );
 729                 // Log entries
 730                 } elseif( $type == RC_LOG ) {
 731                         if( $logType ) {
 732                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 733                                 $logpage = new LogPage( $logType );
 734                                 $logname = $logpage->getName()->escaped();
 735                                 $clink = $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logtitle, $logname ) )->escaped();
 736                         } else {
 737                                 $clink = Linker::link( $rc->getTitle() );
 738                         }
 739                         $watched = false;
 740                 // Log entries (old format) and special pages
 741                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 742                         wfDebug( "Unexpected special page in recentchanges\n" );
 743                         $clink = '';
 744                 // Edits
 745                 } else {
 746                         $clink = Linker::linkKnown( $rc->getTitle() );
 747                 }
 748
 749                 # Don't show unusable diff links
 750                 if ( !ChangesList::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 751                         $showdifflinks = false;
 752                 }
 753
 754                 $time = $this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() );
 755                 $rc->watched = $watched;
 756                 $rc->link = $clink;
 757                 $rc->timestamp = $time;
 758                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 759
 760                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 761                 # called too many times (50% of CPU time on RecentChanges!).
 762                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 763                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 764                 if( $rc->unpatrolled ) {
 765                         $rcIdQuery = array( 'rcid' => $rc->mAttribs['rc_id'] );
 766                 } else {
 767                         $rcIdQuery = array();
 768                 }
 769                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 770                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' =>
 771                         $lastOldid ) + $rcIdQuery;
 772
 773                 if( !$showdifflinks ) {
 774                         $curLink = $this->message['cur'];
 775                         $diffLink = $this->message['diff'];
 776                 } elseif( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 777                         if ( $type != RC_NEW ) {
 778                                 $curLink = $this->message['cur'];
 779                         } else {
 780                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 781                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 782                         }
 783                         $diffLink = $this->message['diff'];
 784                 } else {
 785                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querydiff ) );
 786                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 787                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 788                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 789                 }
 790
 791                 # Make "last" link
 792                 if( !$showdifflinks || !$lastOldid ) {
 793                         $lastLink = $this->message['last'];
 794                 } elseif( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 795                         $lastLink = $this->message['last'];
 796                 } else {
 797                         $lastLink = Linker::linkKnown( $rc->getTitle(), $this->message['last'],
 798                                 array(), $curIdEq + array('diff' => $thisOldid, 'oldid' => $lastOldid) + $rcIdQuery );
 799                 }
 800
 801                 # Make user links
 802                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 803                         $rc->userlink = ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 804                 } else {
 805                         $rc->userlink = Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 806                         $rc->usertalklink = Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 807                 }
 808
 809                 $rc->lastlink = $lastLink;
 810                 $rc->curlink  = $curLink;
 811                 $rc->difflink = $diffLink;
 812
 813                 # Put accumulated information into the cache, for later display
 814                 # Page moves go on their own line
 815                 $title = $rc->getTitle();
 816                 $secureName = $title->getPrefixedDBkey();
 817                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 818                         # Use an @ character to prevent collision with page names
 819                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 820                 } else {
 821                         # Logs are grouped by type
 822                         if( $type == RC_LOG ){
 823                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 824                         }
 825                         if( !isset( $this->rc_cache[$secureName] ) ) {
 826                                 $this->rc_cache[$secureName] = array();
 827                         }
 828
 829                         array_push( $this->rc_cache[$secureName], $rc );
 830                 }
 831
 832                 wfProfileOut( __METHOD__ );
 833
 834                 return $ret;
 835         }
 836
 837         /**
 838          * Enhanced RC group
 839          * @return string
 840          */
 841         protected function recentChangesBlockGroup( $block ) {
 842                 global $wgRCShowChangedSize;
 843
 844                 wfProfileIn( __METHOD__ );
 845
 846                 # Add the namespace and title of the block as part of the class
 847                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 848                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 849                         # Log entry
 850                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 851                                         . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 852                 } else {
 853                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 854                                         . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 855                 }
 856                 $classes[] = $block[0]->watched ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 857                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 858                         Html::openElement( 'tr' );
 859
 860                 # Collate list of users
 861                 $userlinks = array();
 862                 # Other properties
 863                 $unpatrolled = false;
 864                 $isnew = false;
 865                 $allBots = true;
 866                 $allMinors = true;
 867                 $curId = $currentRevision = 0;
 868                 # Some catalyst variables...
 869                 $namehidden = true;
 870                 $allLogs = true;
 871                 foreach( $block as $rcObj ) {
 872                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 873                         if( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 874                                 $isnew = true;
 875                         }
 876                         // If all log actions to this page were hidden, then don't
 877                         // give the name of the affected page for this block!
 878                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 879                                 $namehidden = false;
 880                         }
 881                         $u = $rcObj->userlink;
 882                         if( !isset( $userlinks[$u] ) ) {
 883                                 $userlinks[$u] = 0;
 884                         }
 885                         if( $rcObj->unpatrolled ) {
 886                                 $unpatrolled = true;
 887                         }
 888                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 889                                 $allLogs = false;
 890                         }
 891                         # Get the latest entry with a page_id and oldid
 892                         # since logs may not have these.
 893                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 894                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 895                         }
 896                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 897                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 898                         }
 899
 900                         if( !$rcObj->mAttribs['rc_bot'] ) {
 901                                 $allBots = false;
 902                         }
 903                         if( !$rcObj->mAttribs['rc_minor'] ) {
 904                                 $allMinors = false;
 905                         }
 906
 907                         $userlinks[$u]++;
 908                 }
 909
 910                 # Sort the list and convert to text
 911                 krsort( $userlinks );
 912                 asort( $userlinks );
 913                 $users = array();
 914                 foreach( $userlinks as $userlink => $count) {
 915                         $text = $userlink;
 916                         $text .= $this->getLanguage()->getDirMark();
 917                         if( $count > 1 ) {
 918                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->formatNum( $count ) . '×' )->escaped();
 919                         }
 920                         array_push( $users, $text );
 921                 }
 922
 923                 $users = ' <span class="changedby">'
 924                         . $this->msg( 'brackets' )->rawParams(
 925                                 implode( $this->message['semicolon-separator'], $users )
 926                         )->escaped() . '</span>';
 927
 928                 $tl = '<span class="mw-collapsible-toggle mw-enhancedchanges-arrow"></span>';
 929                 $r .= "<td>$tl</td>";
 930
 931                 # Main line
 932                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 933                         'newpage' => $isnew, # show, when one have this flag
 934                         'minor' => $allMinors, # show only, when all have this flag
 935                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 936                         'bot' => $allBots, # show only, when all have this flag
 937                 ) );
 938
 939                 # Timestamp
 940                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td>';
 941
 942                 # Article link
 943                 if( $namehidden ) {
 944                         $r .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 945                 } elseif( $allLogs ) {
 946                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 947                 } else {
 948                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 949                 }
 950
 951                 $r .= $this->getLanguage()->getDirMark();
 952
 953                 $queryParams['curid'] = $curId;
 954                 # Changes message
 955                 $n = count($block);
 956                 static $nchanges = array();
 957                 if ( !isset( $nchanges[$n] ) ) {
 958                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 959                 }
 960                 # Total change link
 961                 $r .= ' ';
 962                 $logtext = '';
 963                 if( !$allLogs ) {
 964                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 965                                 $logtext .= $nchanges[$n];
 966                         } elseif( $isnew ) {
 967                                 $logtext .= $nchanges[$n];
 968                         } else {
 969                                 $params = $queryParams;
 970                                 $params['diff'] = $currentRevision;
 971                                 $params['oldid'] = $oldid;
 972
 973                                 $logtext .= Linker::link(
 974                                         $block[0]->getTitle(),
 975                                         $nchanges[$n],
 976                                         array(),
 977                                         $params,
 978                                         array( 'known', 'noclasses' )
 979                                 );
 980                         }
 981                 }
 982
 983                 # History
 984                 if( $allLogs ) {
 985                         // don't show history link for logs
 986                 } elseif( $namehidden || !$block[0]->getTitle()->exists() ) {
 987                         $logtext .= $this->message['pipe-separator'] . $this->message['hist'];
 988                 } else {
 989                         $params = $queryParams;
 990                         $params['action'] = 'history';
 991
 992                         $logtext .= $this->message['pipe-separator'] .
 993                                 Linker::linkKnown(
 994                                         $block[0]->getTitle(),
 995                                         $this->message['hist'],
 996                                         array(),
 997                                         $params
 998                                 );
 999                 }
1000
1001                 if( $logtext !== '' ) {
1002                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
1003                 }
1004
1005                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1006
1007                 # Character difference (does not apply if only log items)
1008                 if( $wgRCShowChangedSize && !$allLogs ) {
1009                         $last = 0;
1010                         $first = count($block) - 1;
1011                         # Some events (like logs) have an "empty" size, so we need to skip those...
1012                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
1013                                 $last++;
1014                         }
1015                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
1016                                 $first--;
1017                         }
1018                         # Get net change
1019                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
1020
1021                         if( $chardiff == '' ) {
1022                                 $r .= ' ';
1023                         } else {
1024                                 $r .= ' ' . $chardiff. ' <span class="mw-changeslist-separator">. .</span> ';
1025                         }
1026                 }
1027
1028                 $r .= $users;
1029                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
1030
1031                 # Sub-entries
1032                 foreach( $block as $rcObj ) {
1033                         # Classes to apply -- TODO implement
1034                         $classes = array();
1035                         $type = $rcObj->mAttribs['rc_type'];
1036
1037                         $r .= '<tr><td></td><td class="mw-enhanced-rc">';
1038                         $r .= $this->recentChangesFlags( array(
1039                                 'newpage' => $type == RC_NEW,
1040                                 'minor' => $rcObj->mAttribs['rc_minor'],
1041                                 'unpatrolled' => $rcObj->unpatrolled,
1042                                 'bot' => $rcObj->mAttribs['rc_bot'],
1043                         ) );
1044                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
1045
1046                         $params = $queryParams;
1047
1048                         if( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
1049                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
1050                         }
1051
1052                         # Log timestamp
1053                         if( $type == RC_LOG ) {
1054                                 $link = $rcObj->timestamp;
1055                         # Revision link
1056                         } elseif( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
1057                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
1058                         } else {
1059                                 if ( $rcObj->unpatrolled && $type == RC_NEW) {
1060                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
1061                                 }
1062
1063                                 $link = Linker::linkKnown(
1064                                                 $rcObj->getTitle(),
1065                                                 $rcObj->timestamp,
1066                                                 array(),
1067                                                 $params
1068                                         );
1069                                 if( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
1070                                         $link = '<span class="history-deleted">'.$link.'</span> ';
1071                                 }
1072                         }
1073                         $r .= $link . '</span>';
1074
1075                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1076                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->curlink . $this->message['pipe-separator'] . $rcObj->lastlink )->escaped();
1077                         }
1078                         $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1079
1080                         # Character diff
1081                         if ( $wgRCShowChangedSize ) {
1082                                 $cd = $this->formatCharacterDifference( $rcObj );
1083                                 if ( $cd !== '' ) {
1084                                         $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
1085                                 }
1086                         }
1087
1088                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
1089                                 $r .= $this->insertLogEntry( $rcObj );
1090                         } else {
1091                                 # User links
1092                                 $r .= $rcObj->userlink;
1093                                 $r .= $rcObj->usertalklink;
1094                                 $r .= $this->insertComment( $rcObj );
1095                         }
1096
1097                         # Rollback
1098                         $this->insertRollback( $r, $rcObj );
1099                         # Tags
1100                         $this->insertTags( $r, $rcObj, $classes );
1101
1102                         $r .= "</td></tr>\n";
1103                 }
1104                 $r .= "</table>\n";
1105
1106                 $this->rcCacheIndex++;
1107
1108                 wfProfileOut( __METHOD__ );
1109
1110                 return $r;
1111         }
1112
1113         /**
1114          * Generate HTML for an arrow or placeholder graphic
1115          * @param $dir String: one of '', 'd', 'l', 'r'
1116          * @param $alt String: text
1117          * @param $title String: text
1118          * @return String: HTML "<img>" tag
1119          */
1120         protected function arrow( $dir, $alt='', $title='' ) {
1121                 global $wgStylePath;
1122                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1123                 $encAlt = htmlspecialchars( $alt );
1124                 $encTitle = htmlspecialchars( $title );
1125                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1126         }
1127
1128         /**
1129          * Generate HTML for a right- or left-facing arrow,
1130          * depending on language direction.
1131          * @return String: HTML "<img>" tag
1132          */
1133         protected function sideArrow() {
1134                 $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
1135                 return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
1136         }
1137
1138         /**
1139          * Generate HTML for a down-facing arrow
1140          * depending on language direction.
1141          * @return String: HTML "<img>" tag
1142          */
1143         protected function downArrow() {
1144                 return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
1145         }
1146
1147         /**
1148          * Generate HTML for a spacer image
1149          * @return String: HTML "<img>" tag
1150          */
1151         protected function spacerArrow() {
1152                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1153         }
1154
1155         /**
1156          * Enhanced RC ungrouped line.
1157          *
1158          * @param $rcObj RecentChange
1159          * @return String: a HTML formatted line (generated using $r)
1160          */
1161         protected function recentChangesBlockLine( $rcObj ) {
1162                 global $wgRCShowChangedSize;
1163
1164                 wfProfileIn( __METHOD__ );
1165                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1166
1167                 $type = $rcObj->mAttribs['rc_type'];
1168                 $logType = $rcObj->mAttribs['rc_log_type'];
1169                 $classes = array( 'mw-enhanced-rc' );
1170                 if( $logType ) {
1171                         # Log entry
1172                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
1173                                         . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1174                 } else {
1175                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
1176                                         $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1177                 }
1178                 $classes[] = $rcObj->watched ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
1179                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1180                         Html::openElement( 'tr' );
1181
1182                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
1183                 # Flag and Timestamp
1184                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1185                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1186                 } else {
1187                         $r .= $this->recentChangesFlags( array(
1188                                 'newpage' => $type == RC_NEW,
1189                                 'minor' => $rcObj->mAttribs['rc_minor'],
1190                                 'unpatrolled' => $rcObj->unpatrolled,
1191                                 'bot' => $rcObj->mAttribs['rc_bot'],
1192                         ) );
1193                 }
1194                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td>';
1195                 # Article or log link
1196                 if( $logType ) {
1197                         $logPage = new LogPage( $logType );
1198                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
1199                         $logName = $logPage->getName()->escaped();
1200                         $r .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
1201                 } else {
1202                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1203                 }
1204                 # Diff and hist links
1205                 if ( $type != RC_LOG ) {
1206                         $query['action'] = 'history';
1207                         $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
1208                                 $rcObj->getTitle(),
1209                                 $this->message['hist'],
1210                                 array(),
1211                                 $query
1212                         ) )->escaped();
1213                 }
1214                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1215                 # Character diff
1216                 if ( $wgRCShowChangedSize ) {
1217                         $cd = $this->formatCharacterDifference( $rcObj );
1218                         if ( $cd !== '' ) {
1219                                 $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
1220                         }
1221                 }
1222
1223                 if ( $type == RC_LOG ) {
1224                         $r .= $this->insertLogEntry( $rcObj );
1225                 } else {
1226                         $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1227                         $r .= $this->insertComment( $rcObj );
1228                         $this->insertRollback( $r, $rcObj );
1229                 }
1230
1231                 # Tags
1232                 $this->insertTags( $r, $rcObj, $classes );
1233                 # Show how many people are watching this if enabled
1234                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1235
1236                 $r .= "</td></tr></table>\n";
1237
1238                 wfProfileOut( __METHOD__ );
1239
1240                 return $r;
1241         }
1242
1243         /**
1244          * If enhanced RC is in use, this function takes the previously cached
1245          * RC lines, arranges them, and outputs the HTML
1246          *
1247          * @return string
1248          */
1249         protected function recentChangesBlock() {
1250                 if( count ( $this->rc_cache ) == 0 ) {
1251                         return '';
1252                 }
1253
1254                 wfProfileIn( __METHOD__ );
1255
1256                 $blockOut = '';
1257                 foreach( $this->rc_cache as $block ) {
1258                         if( count( $block ) < 2 ) {
1259                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1260                         } else {
1261                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1262                         }
1263                 }
1264
1265                 wfProfileOut( __METHOD__ );
1266
1267                 return '<div>'.$blockOut.'</div>';
1268         }
1269
1270         /**
1271          * Returns text for the end of RC
1272          * If enhanced RC is in use, returns pretty much all the text
1273          * @return string
1274          */
1275         public function endRecentChangesList() {
1276                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1277         }
1278
1279 }