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                 return '';
 439         }
 440
 441         /**
 442          * Check whether to enable recent changes patrol features
 443          * @return Boolean
 444          */
 445         public static function usePatrol() {
 446                 global $wgUser;
 447                 return $wgUser->useRCPatrol();
 448         }
 449
 450         /**
 451          * Returns the string which indicates the number of watching users
 452          * @return string
 453          */
 454         protected function numberofWatchingusers( $count ) {
 455                 static $cache = array();
 456                 if( $count > 0 ) {
 457                         if( !isset( $cache[$count] ) ) {
 458                                 $cache[$count] = $this->msg( 'number_of_watching_users_RCview' )->numParams( $count )->escaped();
 459                         }
 460                         return $cache[$count];
 461                 } else {
 462                         return '';
 463                 }
 464         }
 465
 466         /**
 467          * Determine if said field of a revision is hidden
 468          * @param $rc RCCacheEntry
 469          * @param $field Integer: one of DELETED_* bitfield constants
 470          * @return Boolean
 471          */
 472         public static function isDeleted( $rc, $field ) {
 473                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 474         }
 475
 476         /**
 477          * Determine if the current user is allowed to view a particular
 478          * field of this revision, if it's marked as deleted.
 479          * @param $rc RCCacheEntry
 480          * @param $field Integer
 481          * @param $user User object to check, or null to use $wgUser
 482          * @return Boolean
 483          */
 484         public static function userCan( $rc, $field, User $user = null ) {
 485                 if( $rc->mAttribs['rc_type'] == RC_LOG ) {
 486                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 487                 } else {
 488                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 489                 }
 490         }
 491
 492         /**
 493          * @param $link string
 494          * @param $watched bool
 495          * @return string
 496          */
 497         protected function maybeWatchedLink( $link, $watched = false ) {
 498                 if( $watched ) {
 499                         return '<strong class="mw-watched">' . $link . '</strong>';
 500                 } else {
 501                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 502                 }
 503         }
 504
 505         /** Inserts a rollback link
 506          *
 507          * @param $s string
 508          * @param $rc RecentChange
 509          */
 510         public function insertRollback( &$s, &$rc ) {
 511                 if( $rc->mAttribs['rc_type'] != RC_NEW && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 512                         $page = $rc->getTitle();
 513                         /** Check for rollback and edit permissions, disallow special pages, and only
 514                           * show a link on the top-most revision */
 515                         if ( $this->getUser()->isAllowed('rollback') && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 516                         {
 517                                 $rev = new Revision( array(
 518                                         'title'     => $page,
 519                                         'id'        => $rc->mAttribs['rc_this_oldid'],
 520                                         'user'      => $rc->mAttribs['rc_user'],
 521                                         'user_text' => $rc->mAttribs['rc_user_text'],
 522                                         'deleted'   => $rc->mAttribs['rc_deleted']
 523                                 ) );
 524                                 $s .= ' '.Linker::generateRollback( $rev, $this->getContext() );
 525                         }
 526                 }
 527         }
 528
 529         /**
 530          * @param $s string
 531          * @param $rc RecentChange
 532          * @param $classes
 533          */
 534         public function insertTags( &$s, &$rc, &$classes ) {
 535                 if ( empty($rc->mAttribs['ts_tags']) )
 536                         return;
 537
 538                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 539                 $classes = array_merge( $classes, $newClasses );
 540                 $s .= ' ' . $tagSummary;
 541         }
 542
 543         public function insertExtra( &$s, &$rc, &$classes ) {
 544                 ## Empty, used for subclassers to add anything special.
 545         }
 546
 547         protected function showAsUnpatrolled( RecentChange $rc ) {
 548                 $unpatrolled = false;
 549                 if ( !$rc->mAttribs['rc_patrolled'] ) {
 550                         if ( $this->getUser()->useRCPatrol() ) {
 551                                 $unpatrolled = true;
 552                         } elseif ( $this->getUser()->useNPPatrol() && $rc->mAttribs['rc_type'] == RC_NEW ) {
 553                                 $unpatrolled = true;
 554                         }
 555                 }
 556                 return $unpatrolled;
 557         }
 558 }
 559
 560
 561 /**
 562  * Generate a list of changes using the good old system (no javascript)
 563  */
 564 class OldChangesList extends ChangesList {
 565         /**
 566          * Format a line using the old system (aka without any javascript).
 567          *
 568          * @param $rc RecentChange, passed by reference
 569          * @param $watched Bool (default false)
 570          * @param $linenumber Int (default null)
 571          * @return string
 572          */
 573         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 574                 global $wgRCShowChangedSize;
 575                 wfProfileIn( __METHOD__ );
 576
 577                 # Should patrol-related stuff be shown?
 578                 $unpatrolled = $this->showAsUnpatrolled( $rc );
 579
 580                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 581                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 582
 583                 $s = '';
 584                 $classes = array();
 585                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 586                 if( $linenumber ) {
 587                         if( $linenumber & 1 ) {
 588                                 $classes[] = 'mw-line-odd';
 589                         }
 590                         else {
 591                                 $classes[] = 'mw-line-even';
 592                         }
 593                 }
 594
 595                 // Indicate watched status on the line to allow for more
 596                 // comprehensive styling.
 597                 $classes[] = $watched ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 598
 599                 // Moved pages (very very old, not supported anymore)
 600                 if( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 601                 // Log entries
 602                 } elseif( $rc->mAttribs['rc_log_type'] ) {
 603                         $logtitle = SpecialPage::getTitleFor( 'Log', $rc->mAttribs['rc_log_type'] );
 604                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 605                 // Log entries (old format) or log targets, and special pages
 606                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 607                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 608                         if( $name == 'Log' ) {
 609                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 610                         }
 611                 // Regular entries
 612                 } else {
 613                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 614                         # M, N, b and ! (minor, new, bot and unpatrolled)
 615                         $s .= $this->recentChangesFlags(
 616                                 array(
 617                                         'newpage' => $rc->mAttribs['rc_type'] == RC_NEW,
 618                                         'minor' => $rc->mAttribs['rc_minor'],
 619                                         'unpatrolled' => $unpatrolled,
 620                                         'bot' => $rc->mAttribs['rc_bot']
 621                                 ),
 622                                 ''
 623                         );
 624                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 625                 }
 626                 # Edit/log timestamp
 627                 $this->insertTimestamp( $s, $rc );
 628                 # Bytes added or removed
 629                 if ( $wgRCShowChangedSize ) {
 630                         $cd = $this->formatCharacterDifference( $rc );
 631                         if ( $cd !== '' ) {
 632                                 $s .= $cd . '  <span class="mw-changeslist-separator">. .</span> ';
 633                         }
 634                 }
 635
 636                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 637                         $s .= $this->insertLogEntry( $rc );
 638                 } else {
 639                         # User tool links
 640                         $this->insertUserRelatedLinks( $s, $rc );
 641                         # LTR/RTL direction mark
 642                         $s .= $this->getLanguage()->getDirMark();
 643                         $s .= $this->insertComment( $rc );
 644                 }
 645
 646                 # Tags
 647                 $this->insertTags( $s, $rc, $classes );
 648                 # Rollback
 649                 $this->insertRollback( $s, $rc );
 650                 # For subclasses
 651                 $this->insertExtra( $s, $rc, $classes );
 652
 653                 # How many users watch this page
 654                 if( $rc->numberofWatchingusers > 0 ) {
 655                         $s .= ' ' . $this->numberofWatchingusers( $rc->numberofWatchingusers );
 656                 }
 657
 658                 if( $this->watchlist ) {
 659                         $classes[] = Sanitizer::escapeClass( 'watchlist-'.$rc->mAttribs['rc_namespace'].'-'.$rc->mAttribs['rc_title'] );
 660                 }
 661
 662                 wfRunHooks( 'OldChangesListRecentChangesLine', array(&$this, &$s, $rc) );
 663
 664                 wfProfileOut( __METHOD__ );
 665                 return "$dateheader<li class=\"".implode( ' ', $classes )."\">".$s."</li>\n";
 666         }
 667 }
 668
 669
 670 /**
 671  * Generate a list of changes using an Enhanced system (uses javascript).
 672  */
 673 class EnhancedChangesList extends ChangesList {
 674
 675         protected $rc_cache;
 676
 677         /**
 678          * Add the JavaScript file for enhanced changeslist
 679          * @return String
 680          */
 681         public function beginRecentChangesList() {
 682                 $this->rc_cache = array();
 683                 $this->rcMoveIndex = 0;
 684                 $this->rcCacheIndex = 0;
 685                 $this->lastdate = '';
 686                 $this->rclistOpen = false;
 687                 $this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
 688                 return '';
 689         }
 690         /**
 691          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 692          *
 693          * @param $baseRC RecentChange
 694          * @param $watched bool
 695          *
 696          * @return string
 697          */
 698         public function recentChangesLine( &$baseRC, $watched = false ) {
 699                 wfProfileIn( __METHOD__ );
 700
 701                 # Create a specialised object
 702                 $rc = RCCacheEntry::newFromParent( $baseRC );
 703
 704                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 705
 706                 # If it's a new day, add the headline and flush the cache
 707                 $date = $this->getLanguage()->userDate( $rc->mAttribs['rc_timestamp'], $this->getUser() );
 708                 $ret = '';
 709                 if( $date != $this->lastdate ) {
 710                         # Process current cache
 711                         $ret = $this->recentChangesBlock();
 712                         $this->rc_cache = array();
 713                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 714                         $this->lastdate = $date;
 715                 }
 716
 717                 # Should patrol-related stuff be shown?
 718                 $rc->unpatrolled = $this->showAsUnpatrolled( $rc );
 719
 720                 $showdifflinks = true;
 721                 # Make article link
 722                 $type = $rc->mAttribs['rc_type'];
 723                 $logType = $rc->mAttribs['rc_log_type'];
 724                 // Page moves, very old style, not supported anymore
 725                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 726                 // New unpatrolled pages
 727                 } elseif( $rc->unpatrolled && $type == RC_NEW ) {
 728                         $clink = Linker::linkKnown( $rc->getTitle(), null, array(),
 729                                 array( 'rcid' => $rc->mAttribs['rc_id'] ) );
 730                 // Log entries
 731                 } elseif( $type == RC_LOG ) {
 732                         if( $logType ) {
 733                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 734                                 $logpage = new LogPage( $logType );
 735                                 $logname = $logpage->getName()->escaped();
 736                                 $clink = $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logtitle, $logname ) )->escaped();
 737                         } else {
 738                                 $clink = Linker::link( $rc->getTitle() );
 739                         }
 740                         $watched = false;
 741                 // Log entries (old format) and special pages
 742                 } elseif( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 743                         wfDebug( "Unexpected special page in recentchanges\n" );
 744                         $clink = '';
 745                 // Edits
 746                 } else {
 747                         $clink = Linker::linkKnown( $rc->getTitle() );
 748                 }
 749
 750                 # Don't show unusable diff links
 751                 if ( !ChangesList::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 752                         $showdifflinks = false;
 753                 }
 754
 755                 $time = $this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() );
 756                 $rc->watched = $watched;
 757                 $rc->link = $clink;
 758                 $rc->timestamp = $time;
 759                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 760
 761                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 762                 # called too many times (50% of CPU time on RecentChanges!).
 763                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 764                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 765                 if( $rc->unpatrolled ) {
 766                         $rcIdQuery = array( 'rcid' => $rc->mAttribs['rc_id'] );
 767                 } else {
 768                         $rcIdQuery = array();
 769                 }
 770                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 771                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' =>
 772                         $lastOldid ) + $rcIdQuery;
 773
 774                 if( !$showdifflinks ) {
 775                         $curLink = $this->message['cur'];
 776                         $diffLink = $this->message['diff'];
 777                 } elseif( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 778                         if ( $type != RC_NEW ) {
 779                                 $curLink = $this->message['cur'];
 780                         } else {
 781                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 782                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 783                         }
 784                         $diffLink = $this->message['diff'];
 785                 } else {
 786                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querydiff ) );
 787                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 788                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 789                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 790                 }
 791
 792                 # Make "last" link
 793                 if( !$showdifflinks || !$lastOldid ) {
 794                         $lastLink = $this->message['last'];
 795                 } elseif( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 796                         $lastLink = $this->message['last'];
 797                 } else {
 798                         $lastLink = Linker::linkKnown( $rc->getTitle(), $this->message['last'],
 799                                 array(), $curIdEq + array('diff' => $thisOldid, 'oldid' => $lastOldid) + $rcIdQuery );
 800                 }
 801
 802                 # Make user links
 803                 if( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 804                         $rc->userlink = ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 805                 } else {
 806                         $rc->userlink = Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 807                         $rc->usertalklink = Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 808                 }
 809
 810                 $rc->lastlink = $lastLink;
 811                 $rc->curlink  = $curLink;
 812                 $rc->difflink = $diffLink;
 813
 814                 # Put accumulated information into the cache, for later display
 815                 # Page moves go on their own line
 816                 $title = $rc->getTitle();
 817                 $secureName = $title->getPrefixedDBkey();
 818                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 819                         # Use an @ character to prevent collision with page names
 820                         $this->rc_cache['@@' . ($this->rcMoveIndex++)] = array($rc);
 821                 } else {
 822                         # Logs are grouped by type
 823                         if( $type == RC_LOG ){
 824                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 825                         }
 826                         if( !isset( $this->rc_cache[$secureName] ) ) {
 827                                 $this->rc_cache[$secureName] = array();
 828                         }
 829
 830                         array_push( $this->rc_cache[$secureName], $rc );
 831                 }
 832
 833                 wfProfileOut( __METHOD__ );
 834
 835                 return $ret;
 836         }
 837
 838         /**
 839          * Enhanced RC group
 840          * @return string
 841          */
 842         protected function recentChangesBlockGroup( $block ) {
 843                 global $wgRCShowChangedSize;
 844
 845                 wfProfileIn( __METHOD__ );
 846
 847                 # Add the namespace and title of the block as part of the class
 848                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 849                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 850                         # Log entry
 851                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 852                                         . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 853                 } else {
 854                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 855                                         . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 856                 }
 857                 $classes[] = $block[0]->watched ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 858                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 859                         Html::openElement( 'tr' );
 860
 861                 # Collate list of users
 862                 $userlinks = array();
 863                 # Other properties
 864                 $unpatrolled = false;
 865                 $isnew = false;
 866                 $allBots = true;
 867                 $allMinors = true;
 868                 $curId = $currentRevision = 0;
 869                 # Some catalyst variables...
 870                 $namehidden = true;
 871                 $allLogs = true;
 872                 foreach( $block as $rcObj ) {
 873                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 874                         if( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 875                                 $isnew = true;
 876                         }
 877                         // If all log actions to this page were hidden, then don't
 878                         // give the name of the affected page for this block!
 879                         if( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 880                                 $namehidden = false;
 881                         }
 882                         $u = $rcObj->userlink;
 883                         if( !isset( $userlinks[$u] ) ) {
 884                                 $userlinks[$u] = 0;
 885                         }
 886                         if( $rcObj->unpatrolled ) {
 887                                 $unpatrolled = true;
 888                         }
 889                         if( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 890                                 $allLogs = false;
 891                         }
 892                         # Get the latest entry with a page_id and oldid
 893                         # since logs may not have these.
 894                         if( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 895                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 896                         }
 897                         if( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 898                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 899                         }
 900
 901                         if( !$rcObj->mAttribs['rc_bot'] ) {
 902                                 $allBots = false;
 903                         }
 904                         if( !$rcObj->mAttribs['rc_minor'] ) {
 905                                 $allMinors = false;
 906                         }
 907
 908                         $userlinks[$u]++;
 909                 }
 910
 911                 # Sort the list and convert to text
 912                 krsort( $userlinks );
 913                 asort( $userlinks );
 914                 $users = array();
 915                 foreach( $userlinks as $userlink => $count) {
 916                         $text = $userlink;
 917                         $text .= $this->getLanguage()->getDirMark();
 918                         if( $count > 1 ) {
 919                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->formatNum( $count ) . '×' )->escaped();
 920                         }
 921                         array_push( $users, $text );
 922                 }
 923
 924                 $users = ' <span class="changedby">'
 925                         . $this->msg( 'brackets' )->rawParams(
 926                                 implode( $this->message['semicolon-separator'], $users )
 927                         )->escaped() . '</span>';
 928
 929                 $tl = '<span class="mw-collapsible-toggle mw-enhancedchanges-arrow"></span>';
 930                 $r .= "<td>$tl</td>";
 931
 932                 # Main line
 933                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 934                         'newpage' => $isnew, # show, when one have this flag
 935                         'minor' => $allMinors, # show only, when all have this flag
 936                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 937                         'bot' => $allBots, # show only, when all have this flag
 938                 ) );
 939
 940                 # Timestamp
 941                 $r .= '&#160;'.$block[0]->timestamp.'&#160;</td><td>';
 942
 943                 # Article link
 944                 if( $namehidden ) {
 945                         $r .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 946                 } elseif( $allLogs ) {
 947                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 948                 } else {
 949                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 950                 }
 951
 952                 $r .= $this->getLanguage()->getDirMark();
 953
 954                 $queryParams['curid'] = $curId;
 955                 # Changes message
 956                 $n = count($block);
 957                 static $nchanges = array();
 958                 if ( !isset( $nchanges[$n] ) ) {
 959                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 960                 }
 961                 # Total change link
 962                 $r .= ' ';
 963                 $logtext = '';
 964                 if( !$allLogs ) {
 965                         if( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 966                                 $logtext .= $nchanges[$n];
 967                         } elseif( $isnew ) {
 968                                 $logtext .= $nchanges[$n];
 969                         } else {
 970                                 $params = $queryParams;
 971                                 $params['diff'] = $currentRevision;
 972                                 $params['oldid'] = $oldid;
 973
 974                                 $logtext .= Linker::link(
 975                                         $block[0]->getTitle(),
 976                                         $nchanges[$n],
 977                                         array(),
 978                                         $params,
 979                                         array( 'known', 'noclasses' )
 980                                 );
 981                         }
 982                 }
 983
 984                 # History
 985                 if( $allLogs ) {
 986                         // don't show history link for logs
 987                 } elseif( $namehidden || !$block[0]->getTitle()->exists() ) {
 988                         $logtext .= $this->message['pipe-separator'] . $this->message['hist'];
 989                 } else {
 990                         $params = $queryParams;
 991                         $params['action'] = 'history';
 992
 993                         $logtext .= $this->message['pipe-separator'] .
 994                                 Linker::linkKnown(
 995                                         $block[0]->getTitle(),
 996                                         $this->message['hist'],
 997                                         array(),
 998                                         $params
 999                                 );
1000                 }
1001
1002                 if( $logtext !== '' ) {
1003                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
1004                 }
1005
1006                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1007
1008                 # Character difference (does not apply if only log items)
1009                 if( $wgRCShowChangedSize && !$allLogs ) {
1010                         $last = 0;
1011                         $first = count($block) - 1;
1012                         # Some events (like logs) have an "empty" size, so we need to skip those...
1013                         while( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
1014                                 $last++;
1015                         }
1016                         while( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
1017                                 $first--;
1018                         }
1019                         # Get net change
1020                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
1021
1022                         if( $chardiff == '' ) {
1023                                 $r .= ' ';
1024                         } else {
1025                                 $r .= ' ' . $chardiff. ' <span class="mw-changeslist-separator">. .</span> ';
1026                         }
1027                 }
1028
1029                 $r .= $users;
1030                 $r .= $this->numberofWatchingusers($block[0]->numberofWatchingusers);
1031
1032                 # Sub-entries
1033                 foreach( $block as $rcObj ) {
1034                         # Classes to apply -- TODO implement
1035                         $classes = array();
1036                         $type = $rcObj->mAttribs['rc_type'];
1037
1038                         $r .= '<tr><td></td><td class="mw-enhanced-rc">';
1039                         $r .= $this->recentChangesFlags( array(
1040                                 'newpage' => $type == RC_NEW,
1041                                 'minor' => $rcObj->mAttribs['rc_minor'],
1042                                 'unpatrolled' => $rcObj->unpatrolled,
1043                                 'bot' => $rcObj->mAttribs['rc_bot'],
1044                         ) );
1045                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
1046
1047                         $params = $queryParams;
1048
1049                         if( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
1050                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
1051                         }
1052
1053                         # Log timestamp
1054                         if( $type == RC_LOG ) {
1055                                 $link = $rcObj->timestamp;
1056                         # Revision link
1057                         } elseif( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
1058                                 $link = '<span class="history-deleted">'.$rcObj->timestamp.'</span> ';
1059                         } else {
1060                                 if ( $rcObj->unpatrolled && $type == RC_NEW) {
1061                                         $params['rcid'] = $rcObj->mAttribs['rc_id'];
1062                                 }
1063
1064                                 $link = Linker::linkKnown(
1065                                                 $rcObj->getTitle(),
1066                                                 $rcObj->timestamp,
1067                                                 array(),
1068                                                 $params
1069                                         );
1070                                 if( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
1071                                         $link = '<span class="history-deleted">'.$link.'</span> ';
1072                                 }
1073                         }
1074                         $r .= $link . '</span>';
1075
1076                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1077                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->curlink . $this->message['pipe-separator'] . $rcObj->lastlink )->escaped();
1078                         }
1079                         $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1080
1081                         # Character diff
1082                         if ( $wgRCShowChangedSize ) {
1083                                 $cd = $this->formatCharacterDifference( $rcObj );
1084                                 if ( $cd !== '' ) {
1085                                         $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
1086                                 }
1087                         }
1088
1089                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
1090                                 $r .= $this->insertLogEntry( $rcObj );
1091                         } else {
1092                                 # User links
1093                                 $r .= $rcObj->userlink;
1094                                 $r .= $rcObj->usertalklink;
1095                                 $r .= $this->insertComment( $rcObj );
1096                         }
1097
1098                         # Rollback
1099                         $this->insertRollback( $r, $rcObj );
1100                         # Tags
1101                         $this->insertTags( $r, $rcObj, $classes );
1102
1103                         $r .= "</td></tr>\n";
1104                 }
1105                 $r .= "</table>\n";
1106
1107                 $this->rcCacheIndex++;
1108
1109                 wfProfileOut( __METHOD__ );
1110
1111                 return $r;
1112         }
1113
1114         /**
1115          * Generate HTML for an arrow or placeholder graphic
1116          * @param $dir String: one of '', 'd', 'l', 'r'
1117          * @param $alt String: text
1118          * @param $title String: text
1119          * @return String: HTML "<img>" tag
1120          */
1121         protected function arrow( $dir, $alt='', $title='' ) {
1122                 global $wgStylePath;
1123                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1124                 $encAlt = htmlspecialchars( $alt );
1125                 $encTitle = htmlspecialchars( $title );
1126                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1127         }
1128
1129         /**
1130          * Generate HTML for a right- or left-facing arrow,
1131          * depending on language direction.
1132          * @return String: HTML "<img>" tag
1133          */
1134         protected function sideArrow() {
1135                 $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
1136                 return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
1137         }
1138
1139         /**
1140          * Generate HTML for a down-facing arrow
1141          * depending on language direction.
1142          * @return String: HTML "<img>" tag
1143          */
1144         protected function downArrow() {
1145                 return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
1146         }
1147
1148         /**
1149          * Generate HTML for a spacer image
1150          * @return String: HTML "<img>" tag
1151          */
1152         protected function spacerArrow() {
1153                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1154         }
1155
1156         /**
1157          * Enhanced RC ungrouped line.
1158          *
1159          * @param $rcObj RecentChange
1160          * @return String: a HTML formatted line (generated using $r)
1161          */
1162         protected function recentChangesBlockLine( $rcObj ) {
1163                 global $wgRCShowChangedSize;
1164
1165                 wfProfileIn( __METHOD__ );
1166                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1167
1168                 $type = $rcObj->mAttribs['rc_type'];
1169                 $logType = $rcObj->mAttribs['rc_log_type'];
1170                 $classes = array( 'mw-enhanced-rc' );
1171                 if( $logType ) {
1172                         # Log entry
1173                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
1174                                         . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1175                 } else {
1176                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
1177                                         $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1178                 }
1179                 $classes[] = $rcObj->watched ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
1180                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1181                         Html::openElement( 'tr' );
1182
1183                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
1184                 # Flag and Timestamp
1185                 if( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1186                         $r .= '&#160;&#160;&#160;&#160;'; // 4 flags -> 4 spaces
1187                 } else {
1188                         $r .= $this->recentChangesFlags( array(
1189                                 'newpage' => $type == RC_NEW,
1190                                 'minor' => $rcObj->mAttribs['rc_minor'],
1191                                 'unpatrolled' => $rcObj->unpatrolled,
1192                                 'bot' => $rcObj->mAttribs['rc_bot'],
1193                         ) );
1194                 }
1195                 $r .= '&#160;'.$rcObj->timestamp.'&#160;</td><td>';
1196                 # Article or log link
1197                 if( $logType ) {
1198                         $logPage = new LogPage( $logType );
1199                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
1200                         $logName = $logPage->getName()->escaped();
1201                         $r .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
1202                 } else {
1203                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1204                 }
1205                 # Diff and hist links
1206                 if ( $type != RC_LOG ) {
1207                         $query['action'] = 'history';
1208                         $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
1209                                 $rcObj->getTitle(),
1210                                 $this->message['hist'],
1211                                 array(),
1212                                 $query
1213                         ) )->escaped();
1214                 }
1215                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1216                 # Character diff
1217                 if ( $wgRCShowChangedSize ) {
1218                         $cd = $this->formatCharacterDifference( $rcObj );
1219                         if ( $cd !== '' ) {
1220                                 $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
1221                         }
1222                 }
1223
1224                 if ( $type == RC_LOG ) {
1225                         $r .= $this->insertLogEntry( $rcObj );
1226                 } else {
1227                         $r .= ' '.$rcObj->userlink . $rcObj->usertalklink;
1228                         $r .= $this->insertComment( $rcObj );
1229                         $this->insertRollback( $r, $rcObj );
1230                 }
1231
1232                 # Tags
1233                 $this->insertTags( $r, $rcObj, $classes );
1234                 # Show how many people are watching this if enabled
1235                 $r .= $this->numberofWatchingusers($rcObj->numberofWatchingusers);
1236
1237                 $r .= "</td></tr></table>\n";
1238
1239                 wfProfileOut( __METHOD__ );
1240
1241                 return $r;
1242         }
1243
1244         /**
1245          * If enhanced RC is in use, this function takes the previously cached
1246          * RC lines, arranges them, and outputs the HTML
1247          *
1248          * @return string
1249          */
1250         protected function recentChangesBlock() {
1251                 if( count ( $this->rc_cache ) == 0 ) {
1252                         return '';
1253                 }
1254
1255                 wfProfileIn( __METHOD__ );
1256
1257                 $blockOut = '';
1258                 foreach( $this->rc_cache as $block ) {
1259                         if( count( $block ) < 2 ) {
1260                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1261                         } else {
1262                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1263                         }
1264                 }
1265
1266                 wfProfileOut( __METHOD__ );
1267
1268                 return '<div>'.$blockOut.'</div>';
1269         }
1270
1271         /**
1272          * Returns text for the end of RC
1273          * If enhanced RC is in use, returns pretty much all the text
1274          * @return string
1275          */
1276         public function endRecentChangesList() {
1277                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1278         }
1279
1280 }