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