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