includes/changes/EnhancedChangesList.php

   1 <?php
   2 /**
   3  * Generates a list of changes using an Enhanced system (uses javascript).
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 class EnhancedChangesList extends ChangesList {
  24
  25         /**
  26          * @var RCCacheEntryFactory
  27          */
  28         protected $cacheEntryFactory;
  29
  30         /**
  31          * @var array Array of array of RCCacheEntry
  32          */
  33         protected $rc_cache;
  34
  35         /**
  36          * @param IContextSource|Skin $obj
  37          */
  38         public function __construct( $obj ) {
  39                 if ( $obj instanceof Skin ) {
  40                         // @todo: deprecate constructing with Skin
  41                         $context = $obj->getContext();
  42                 } else {
  43                         if ( ! $obj instanceof IContextSource ) {
  44                                 throw new MWException( 'EnhancedChangesList must be constructed with a '
  45                                         . 'context source or skin.' );
  46                         }
  47
  48                         $context = $obj;
  49                 }
  50
  51                 parent::__construct( $context );
  52
  53                 // message is set by the parent ChangesList class
  54                 $this->cacheEntryFactory = new RCCacheEntryFactory(
  55                         $context,
  56                         $this->message
  57                 );
  58         }
  59
  60         /**
  61          * Add the JavaScript file for enhanced changeslist
  62          *
  63          * @param ResultWrapper $res
  64          * @return string
  65          */
  66         public function beginRecentChangesList( $res ) {
  67                 $this->rc_cache = array();
  68                 $this->rcMoveIndex = 0;
  69                 $this->rcCacheIndex = 0;
  70                 $this->lastdate = '';
  71                 $this->rclistOpen = false;
  72                 $this->getOutput()->addModuleStyles( array(
  73                         'mediawiki.special.changeslist',
  74                         'mediawiki.special.changeslist.enhanced',
  75                 ) );
  76                 $this->getOutput()->addModules( array(
  77                         'jquery.makeCollapsible',
  78                         'mediawiki.icon',
  79                 ) );
  80
  81                 wfRunHooks( 'EnhancedChangesListBegin', array( $this, $res ) );
  82
  83                 return '<div class="mw-changeslist">';
  84         }
  85
  86         /**
  87          * Format a line for enhanced recentchange (aka with javascript and block of lines).
  88          *
  89          * @param RecentChange $baseRC
  90          * @param bool $watched
  91          *
  92          * @return string
  93          */
  94         public function recentChangesLine( &$baseRC, $watched = false ) {
  95                 wfProfileIn( __METHOD__ );
  96
  97                 # If it's a new day, add the headline and flush the cache
  98                 $date = $this->getLanguage()->userDate(
  99                         $baseRC->mAttribs['rc_timestamp'],
 100                         $this->getUser()
 101                 );
 102
 103                 $ret = '';
 104
 105                 if ( $date != $this->lastdate ) {
 106                         # Process current cache
 107                         $ret = $this->recentChangesBlock();
 108                         $this->rc_cache = array();
 109                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 110                         $this->lastdate = $date;
 111                 }
 112
 113                 $cacheEntry = $this->cacheEntryFactory->newFromRecentChange( $baseRC, $watched );
 114
 115                 # Put accumulated information into the cache, for later display
 116                 # Page moves go on their own line
 117                 $title = $cacheEntry->getTitle();
 118                 $secureName = $title->getPrefixedDBkey();
 119
 120                 $type = $cacheEntry->mAttribs['rc_type'];
 121
 122                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 123                         # Use an @ character to prevent collision with page names
 124                         $this->rc_cache['@@' . ( $this->rcMoveIndex++ )] = array( $cacheEntry );
 125                 } else {
 126                         # Logs are grouped by type
 127                         if ( $type == RC_LOG ) {
 128                                 $secureName = SpecialPage::getTitleFor(
 129                                         'Log',
 130                                         $cacheEntry->mAttribs['rc_log_type']
 131                                 )->getPrefixedDBkey();
 132                         }
 133                         if ( !isset( $this->rc_cache[$secureName] ) ) {
 134                                 $this->rc_cache[$secureName] = array();
 135                         }
 136
 137                         array_push( $this->rc_cache[$secureName], $cacheEntry );
 138                 }
 139
 140                 wfProfileOut( __METHOD__ );
 141
 142                 return $ret;
 143         }
 144
 145         /**
 146          * Enhanced RC group
 147          * @param RCCacheEntry[] $block
 148          * @return string
 149          */
 150         protected function recentChangesBlockGroup( $block ) {
 151                 global $wgRCShowChangedSize;
 152
 153                 wfProfileIn( __METHOD__ );
 154
 155                 # Add the namespace and title of the block as part of the class
 156                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 157                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 158                         # Log entry
 159                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 160                                 . $block[0]->mAttribs['rc_log_type'] );
 161                 } else {
 162                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 163                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 164                 }
 165                 $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 166                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 167                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 168                         Html::openElement( 'tr' );
 169
 170                 # Collate list of users
 171                 $userlinks = array();
 172                 # Other properties
 173                 $unpatrolled = false;
 174                 $isnew = false;
 175                 $allBots = true;
 176                 $allMinors = true;
 177                 $curId = $currentRevision = 0;
 178                 # Some catalyst variables...
 179                 $namehidden = true;
 180                 $allLogs = true;
 181                 $oldid = '';
 182                 foreach ( $block as $rcObj ) {
 183                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 184                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 185                                 $isnew = true;
 186                         }
 187                         // If all log actions to this page were hidden, then don't
 188                         // give the name of the affected page for this block!
 189                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 190                                 $namehidden = false;
 191                         }
 192                         $u = $rcObj->userlink;
 193                         if ( !isset( $userlinks[$u] ) ) {
 194                                 $userlinks[$u] = 0;
 195                         }
 196                         if ( $rcObj->unpatrolled ) {
 197                                 $unpatrolled = true;
 198                         }
 199                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 200                                 $allLogs = false;
 201                         }
 202                         # Get the latest entry with a page_id and oldid
 203                         # since logs may not have these.
 204                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 205                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 206                         }
 207                         if ( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 208                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 209                         }
 210
 211                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 212                                 $allBots = false;
 213                         }
 214                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 215                                 $allMinors = false;
 216                         }
 217
 218                         $userlinks[$u]++;
 219                 }
 220
 221                 # Sort the list and convert to text
 222                 krsort( $userlinks );
 223                 asort( $userlinks );
 224                 $users = array();
 225                 foreach ( $userlinks as $userlink => $count ) {
 226                         $text = $userlink;
 227                         $text .= $this->getLanguage()->getDirMark();
 228                         if ( $count > 1 ) {
 229                                 // @todo FIXME: Hardcoded '×'. Should be a message.
 230                                 $formattedCount = $this->getLanguage()->formatNum( $count ) . '×';
 231                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 232                         }
 233                         array_push( $users, $text );
 234                 }
 235
 236                 $users = ' <span class="changedby">'
 237                         . $this->msg( 'brackets' )->rawParams(
 238                                 implode( $this->message['semicolon-separator'], $users )
 239                         )->escaped() . '</span>';
 240
 241                 $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow ' .
 242                         'mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
 243                 $r .= "<td>$tl</td>";
 244
 245                 # Main line
 246                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 247                         'newpage' => $isnew, # show, when one have this flag
 248                         'minor' => $allMinors, # show only, when all have this flag
 249                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 250                         'bot' => $allBots, # show only, when all have this flag
 251                 ) );
 252
 253                 # Timestamp
 254                 $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';
 255
 256                 # Article link
 257                 if ( $namehidden ) {
 258                         $r .= ' <span class="history-deleted">' .
 259                                 $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 260                 } elseif ( $allLogs ) {
 261                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 262                 } else {
 263                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 264                 }
 265
 266                 $r .= $this->getLanguage()->getDirMark();
 267
 268                 $queryParams['curid'] = $curId;
 269
 270                 # Changes message
 271                 static $nchanges = array();
 272                 static $sinceLastVisitMsg = array();
 273
 274                 $n = count( $block );
 275                 if ( !isset( $nchanges[$n] ) ) {
 276                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 277                 }
 278
 279                 $sinceLast = 0;
 280                 $unvisitedOldid = null;
 281                 /** @var $rcObj RCCacheEntry */
 282                 foreach ( $block as $rcObj ) {
 283                         // Same logic as below inside main foreach
 284                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 285                                 $sinceLast++;
 286                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 287                         }
 288                 }
 289                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 290                         $sinceLastVisitMsg[$sinceLast] =
 291                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 292                 }
 293
 294                 # Total change link
 295                 $r .= ' ';
 296                 $logtext = '';
 297                 /** @var $block0 RecentChange */
 298                 $block0 = $block[0];
 299                 if ( !$allLogs ) {
 300                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 301                                 $logtext .= $nchanges[$n];
 302                         } elseif ( $isnew ) {
 303                                 $logtext .= $nchanges[$n];
 304                         } else {
 305                                 $logtext .= Linker::link(
 306                                         $block0->getTitle(),
 307                                         $nchanges[$n],
 308                                         array(),
 309                                         $queryParams + array(
 310                                                 'diff' => $currentRevision,
 311                                                 'oldid' => $oldid,
 312                                         ),
 313                                         array( 'known', 'noclasses' )
 314                                 );
 315                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 316                                         $logtext .= $this->message['pipe-separator'] . Linker::link(
 317                                                 $block0->getTitle(),
 318                                                 $sinceLastVisitMsg[$sinceLast],
 319                                                 array(),
 320                                                 $queryParams + array(
 321                                                         'diff' => $currentRevision,
 322                                                         'oldid' => $unvisitedOldid,
 323                                                 ),
 324                                                 array( 'known', 'noclasses' )
 325                                         );
 326                                 }
 327                         }
 328                 }
 329
 330                 # History
 331                 if ( $allLogs ) {
 332                         // don't show history link for logs
 333                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 334                         $logtext .= $this->message['pipe-separator'] . $this->message['enhancedrc-history'];
 335                 } else {
 336                         $params = $queryParams;
 337                         $params['action'] = 'history';
 338
 339                         $logtext .= $this->message['pipe-separator'] .
 340                                 Linker::linkKnown(
 341                                         $block0->getTitle(),
 342                                         $this->message['enhancedrc-history'],
 343                                         array(),
 344                                         $params
 345                                 );
 346                 }
 347
 348                 if ( $logtext !== '' ) {
 349                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 350                 }
 351
 352                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 353
 354                 # Character difference (does not apply if only log items)
 355                 if ( $wgRCShowChangedSize && !$allLogs ) {
 356                         $last = 0;
 357                         $first = count( $block ) - 1;
 358                         # Some events (like logs) have an "empty" size, so we need to skip those...
 359                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 360                                 $last++;
 361                         }
 362                         while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 363                                 $first--;
 364                         }
 365                         # Get net change
 366                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
 367
 368                         if ( $chardiff == '' ) {
 369                                 $r .= ' ';
 370                         } else {
 371                                 $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
 372                         }
 373                 }
 374
 375                 $r .= $users;
 376                 $r .= $this->numberofWatchingusers( $block0->numberofWatchingusers );
 377                 $r .= '</td></tr>';
 378
 379                 # Sub-entries
 380                 foreach ( $block as $rcObj ) {
 381                         # Classes to apply -- TODO implement
 382                         $classes = array();
 383                         $type = $rcObj->mAttribs['rc_type'];
 384
 385                         $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 386                                 ? ' class="mw-enhanced-watched"' : '';
 387
 388                         $r .= '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
 389                         $r .= $this->recentChangesFlags( array(
 390                                 'newpage' => $type == RC_NEW,
 391                                 'minor' => $rcObj->mAttribs['rc_minor'],
 392                                 'unpatrolled' => $rcObj->unpatrolled,
 393                                 'bot' => $rcObj->mAttribs['rc_bot'],
 394                         ) );
 395                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
 396
 397                         $params = $queryParams;
 398
 399                         if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 400                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 401                         }
 402
 403                         # Log timestamp
 404                         if ( $type == RC_LOG ) {
 405                                 $link = $rcObj->timestamp;
 406                         # Revision link
 407                         } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 408                                 $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 409                         } else {
 410
 411                                 $link = Linker::linkKnown(
 412                                         $rcObj->getTitle(),
 413                                         $rcObj->timestamp,
 414                                         array(),
 415                                         $params
 416                                 );
 417                                 if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 418                                         $link = '<span class="history-deleted">' . $link . '</span> ';
 419                                 }
 420                         }
 421                         $r .= $link . '</span>';
 422
 423                         if ( !$type == RC_LOG || $type == RC_NEW ) {
 424                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams(
 425                                         $rcObj->curlink .
 426                                                 $this->message['pipe-separator'] .
 427                                                 $rcObj->lastlink
 428                                 )->escaped();
 429                         }
 430                         $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 431
 432                         # Character diff
 433                         if ( $wgRCShowChangedSize ) {
 434                                 $cd = $this->formatCharacterDifference( $rcObj );
 435                                 if ( $cd !== '' ) {
 436                                         $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
 437                                 }
 438                         }
 439
 440                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 441                                 $r .= $this->insertLogEntry( $rcObj );
 442                         } else {
 443                                 # User links
 444                                 $r .= $rcObj->userlink;
 445                                 $r .= $rcObj->usertalklink;
 446                                 $r .= $this->insertComment( $rcObj );
 447                         }
 448
 449                         # Rollback
 450                         $this->insertRollback( $r, $rcObj );
 451                         # Tags
 452                         $this->insertTags( $r, $rcObj, $classes );
 453
 454                         $r .= "</td></tr>\n";
 455                 }
 456                 $r .= "</table>\n";
 457
 458                 $this->rcCacheIndex++;
 459
 460                 wfProfileOut( __METHOD__ );
 461
 462                 return $r;
 463         }
 464
 465         /**
 466          * Generate HTML for an arrow or placeholder graphic
 467          * @param string $dir One of '', 'd', 'l', 'r'
 468          * @param string $alt
 469          * @param string $title
 470          * @return string HTML "<img>" tag
 471          */
 472         protected function arrow( $dir, $alt = '', $title = '' ) {
 473                 global $wgStylePath;
 474                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
 475                 $encAlt = htmlspecialchars( $alt );
 476                 $encTitle = htmlspecialchars( $title );
 477
 478                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
 479         }
 480
 481         /**
 482          * Generate HTML for a right- or left-facing arrow,
 483          * depending on language direction.
 484          * @return string HTML "<img>" tag
 485          */
 486         protected function sideArrow() {
 487                 $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
 488
 489                 return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
 490         }
 491
 492         /**
 493          * Generate HTML for a down-facing arrow
 494          * depending on language direction.
 495          * @return string HTML "<img>" tag
 496          */
 497         protected function downArrow() {
 498                 return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
 499         }
 500
 501         /**
 502          * Generate HTML for a spacer image
 503          * @return string HTML "<img>" tag
 504          */
 505         protected function spacerArrow() {
 506                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
 507         }
 508
 509         /**
 510          * Enhanced RC ungrouped line.
 511          *
 512          * @param RecentChange|RCCacheEntry $rcObj
 513          * @return string A HTML formatted line (generated using $r)
 514          */
 515         protected function recentChangesBlockLine( $rcObj ) {
 516                 global $wgRCShowChangedSize;
 517
 518                 wfProfileIn( __METHOD__ );
 519                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 520
 521                 $type = $rcObj->mAttribs['rc_type'];
 522                 $logType = $rcObj->mAttribs['rc_log_type'];
 523                 $classes = array( 'mw-enhanced-rc' );
 524                 if ( $logType ) {
 525                         # Log entry
 526                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 527                 } else {
 528                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 529                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 530                 }
 531                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 532                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 533                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 534                         Html::openElement( 'tr' );
 535
 536                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 537                 # Flag and Timestamp
 538                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 539                         $r .= $this->recentChangesFlags( array() ); // no flags, but need the placeholders
 540                 } else {
 541                         $r .= $this->recentChangesFlags( array(
 542                                 'newpage' => $type == RC_NEW,
 543                                 'minor' => $rcObj->mAttribs['rc_minor'],
 544                                 'unpatrolled' => $rcObj->unpatrolled,
 545                                 'bot' => $rcObj->mAttribs['rc_bot'],
 546                         ) );
 547                 }
 548                 $r .= '&#160;' . $rcObj->timestamp . '&#160;</td><td>';
 549                 # Article or log link
 550                 if ( $logType ) {
 551                         $logPage = new LogPage( $logType );
 552                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 553                         $logName = $logPage->getName()->escaped();
 554                         $r .= $this->msg( 'parentheses' )
 555                                 ->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
 556                 } else {
 557                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 558                 }
 559                 # Diff and hist links
 560                 if ( $type != RC_LOG ) {
 561                         $query['action'] = 'history';
 562                         $r .= ' ' . $this->msg( 'parentheses' )
 563                                 ->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
 564                                         $rcObj->getTitle(),
 565                                         $this->message['hist'],
 566                                         array(),
 567                                         $query
 568                                 ) )->escaped();
 569                 }
 570                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 571                 # Character diff
 572                 if ( $wgRCShowChangedSize ) {
 573                         $cd = $this->formatCharacterDifference( $rcObj );
 574                         if ( $cd !== '' ) {
 575                                 $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
 576                         }
 577                 }
 578
 579                 if ( $type == RC_LOG ) {
 580                         $r .= $this->insertLogEntry( $rcObj );
 581                 } else {
 582                         $r .= ' ' . $rcObj->userlink . $rcObj->usertalklink;
 583                         $r .= $this->insertComment( $rcObj );
 584                         $this->insertRollback( $r, $rcObj );
 585                 }
 586
 587                 # Tags
 588                 $this->insertTags( $r, $rcObj, $classes );
 589                 # Show how many people are watching this if enabled
 590                 $r .= $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 591
 592                 $r .= "</td></tr></table>\n";
 593
 594                 wfProfileOut( __METHOD__ );
 595
 596                 return $r;
 597         }
 598
 599         /**
 600          * If enhanced RC is in use, this function takes the previously cached
 601          * RC lines, arranges them, and outputs the HTML
 602          *
 603          * @return string
 604          */
 605         protected function recentChangesBlock() {
 606                 if ( count( $this->rc_cache ) == 0 ) {
 607                         return '';
 608                 }
 609
 610                 wfProfileIn( __METHOD__ );
 611
 612                 $blockOut = '';
 613                 foreach ( $this->rc_cache as $block ) {
 614                         if ( count( $block ) < 2 ) {
 615                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 616                         } else {
 617                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 618                         }
 619                 }
 620
 621                 wfProfileOut( __METHOD__ );
 622
 623                 return '<div>' . $blockOut . '</div>';
 624         }
 625
 626         /**
 627          * Returns text for the end of RC
 628          * If enhanced RC is in use, returns pretty much all the text
 629          * @return string
 630          */
 631         public function endRecentChangesList() {
 632                 return $this->recentChangesBlock() . '</div>';
 633         }
 634 }