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                 $date = $this->getLanguage()->userDate(
  94                         $baseRC->mAttribs['rc_timestamp'],
  95                         $this->getUser()
  96                 );
  97
  98                 $ret = '';
  99
 100                 # If it's a new day, add the headline and flush the cache
 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                 $this->addCacheEntry( $cacheEntry );
 111
 112                 wfProfileOut( __METHOD__ );
 113
 114                 return $ret;
 115         }
 116
 117         /**
 118          * Put accumulated information into the cache, for later display.
 119          * Page moves go on their own line.
 120          *
 121          * @param RCCacheEntry $cacheEntry
 122          */
 123         protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
 124                 $cacheGroupingKey = $this->makeCacheGroupingKey( $cacheEntry );
 125
 126                 if ( !isset( $this->rc_cache[$cacheGroupingKey] ) ) {
 127                         $this->rc_cache[$cacheGroupingKey] = array();
 128                 }
 129
 130                 array_push( $this->rc_cache[$cacheGroupingKey], $cacheEntry );
 131         }
 132
 133         /**
 134          * @todo use rc_source to group, if set; fallback to rc_type
 135          *
 136          * @param RCCacheEntry $cacheEntry
 137          *
 138          * @return string
 139          */
 140         protected function makeCacheGroupingKey( RCCacheEntry $cacheEntry ) {
 141                 $title = $cacheEntry->getTitle();
 142                 $cacheGroupingKey = $title->getPrefixedDBkey();
 143
 144                 $type = $cacheEntry->mAttribs['rc_type'];
 145
 146                 // @todo remove handling for RC_MOVE and RC_MOVE_OVER_REDIRECT (bug 63755)
 147                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 148                         // Use an # character to prevent collision with page names
 149                         $cacheGroupingKey = '##' . ( $this->rcMoveIndex++ );
 150                 } elseif ( $type == RC_LOG ) {
 151                         // Group by log type
 152                         $cacheGroupingKey = SpecialPage::getTitleFor(
 153                                 'Log',
 154                                 $cacheEntry->mAttribs['rc_log_type']
 155                         )->getPrefixedDBkey();
 156                 }
 157
 158                 return $cacheGroupingKey;
 159         }
 160
 161         /**
 162          * Enhanced RC group
 163          * @param RCCacheEntry[] $block
 164          * @return string
 165          */
 166         protected function recentChangesBlockGroup( $block ) {
 167                 global $wgRCShowChangedSize;
 168
 169                 wfProfileIn( __METHOD__ );
 170
 171                 # Add the namespace and title of the block as part of the class
 172                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 173                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 174                         # Log entry
 175                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 176                                 . $block[0]->mAttribs['rc_log_type'] );
 177                 } else {
 178                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 179                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 180                 }
 181                 $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 182                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 183                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 184                         Html::openElement( 'tr' );
 185
 186                 # Collate list of users
 187                 $userlinks = array();
 188                 # Other properties
 189                 $unpatrolled = false;
 190                 $isnew = false;
 191                 $allBots = true;
 192                 $allMinors = true;
 193                 $curId = $currentRevision = 0;
 194                 # Some catalyst variables...
 195                 $namehidden = true;
 196                 $allLogs = true;
 197                 $oldid = '';
 198                 foreach ( $block as $rcObj ) {
 199                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 200                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 201                                 $isnew = true;
 202                         }
 203                         // If all log actions to this page were hidden, then don't
 204                         // give the name of the affected page for this block!
 205                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 206                                 $namehidden = false;
 207                         }
 208                         $u = $rcObj->userlink;
 209                         if ( !isset( $userlinks[$u] ) ) {
 210                                 $userlinks[$u] = 0;
 211                         }
 212                         if ( $rcObj->unpatrolled ) {
 213                                 $unpatrolled = true;
 214                         }
 215                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 216                                 $allLogs = false;
 217                         }
 218                         # Get the latest entry with a page_id and oldid
 219                         # since logs may not have these.
 220                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 221                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 222                         }
 223                         if ( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 224                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 225                         }
 226
 227                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 228                                 $allBots = false;
 229                         }
 230                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 231                                 $allMinors = false;
 232                         }
 233
 234                         $userlinks[$u]++;
 235                 }
 236
 237                 # Sort the list and convert to text
 238                 krsort( $userlinks );
 239                 asort( $userlinks );
 240                 $users = array();
 241                 foreach ( $userlinks as $userlink => $count ) {
 242                         $text = $userlink;
 243                         $text .= $this->getLanguage()->getDirMark();
 244                         if ( $count > 1 ) {
 245                                 // @todo FIXME: Hardcoded '×'. Should be a message.
 246                                 $formattedCount = $this->getLanguage()->formatNum( $count ) . '×';
 247                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 248                         }
 249                         array_push( $users, $text );
 250                 }
 251
 252                 $users = ' <span class="changedby">'
 253                         . $this->msg( 'brackets' )->rawParams(
 254                                 implode( $this->message['semicolon-separator'], $users )
 255                         )->escaped() . '</span>';
 256
 257                 $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow ' .
 258                         'mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
 259                 $r .= "<td>$tl</td>";
 260
 261                 # Main line
 262                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 263                         'newpage' => $isnew, # show, when one have this flag
 264                         'minor' => $allMinors, # show only, when all have this flag
 265                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 266                         'bot' => $allBots, # show only, when all have this flag
 267                 ) );
 268
 269                 # Timestamp
 270                 $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';
 271
 272                 # Article link
 273                 if ( $namehidden ) {
 274                         $r .= ' <span class="history-deleted">' .
 275                                 $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 276                 } elseif ( $allLogs ) {
 277                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 278                 } else {
 279                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 280                 }
 281
 282                 $r .= $this->getLanguage()->getDirMark();
 283
 284                 $queryParams['curid'] = $curId;
 285
 286                 # Changes message
 287                 static $nchanges = array();
 288                 static $sinceLastVisitMsg = array();
 289
 290                 $n = count( $block );
 291                 if ( !isset( $nchanges[$n] ) ) {
 292                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 293                 }
 294
 295                 $sinceLast = 0;
 296                 $unvisitedOldid = null;
 297                 /** @var $rcObj RCCacheEntry */
 298                 foreach ( $block as $rcObj ) {
 299                         // Same logic as below inside main foreach
 300                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 301                                 $sinceLast++;
 302                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 303                         }
 304                 }
 305                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 306                         $sinceLastVisitMsg[$sinceLast] =
 307                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 308                 }
 309
 310                 # Total change link
 311                 $r .= ' ';
 312                 $logtext = '';
 313                 /** @var $block0 RecentChange */
 314                 $block0 = $block[0];
 315                 if ( !$allLogs ) {
 316                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 317                                 $logtext .= $nchanges[$n];
 318                         } elseif ( $isnew ) {
 319                                 $logtext .= $nchanges[$n];
 320                         } else {
 321                                 $logtext .= Linker::link(
 322                                         $block0->getTitle(),
 323                                         $nchanges[$n],
 324                                         array(),
 325                                         $queryParams + array(
 326                                                 'diff' => $currentRevision,
 327                                                 'oldid' => $oldid,
 328                                         ),
 329                                         array( 'known', 'noclasses' )
 330                                 );
 331                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 332                                         $logtext .= $this->message['pipe-separator'] . Linker::link(
 333                                                 $block0->getTitle(),
 334                                                 $sinceLastVisitMsg[$sinceLast],
 335                                                 array(),
 336                                                 $queryParams + array(
 337                                                         'diff' => $currentRevision,
 338                                                         'oldid' => $unvisitedOldid,
 339                                                 ),
 340                                                 array( 'known', 'noclasses' )
 341                                         );
 342                                 }
 343                         }
 344                 }
 345
 346                 # History
 347                 if ( $allLogs ) {
 348                         // don't show history link for logs
 349                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 350                         $logtext .= $this->message['pipe-separator'] . $this->message['enhancedrc-history'];
 351                 } else {
 352                         $params = $queryParams;
 353                         $params['action'] = 'history';
 354
 355                         $logtext .= $this->message['pipe-separator'] .
 356                                 Linker::linkKnown(
 357                                         $block0->getTitle(),
 358                                         $this->message['enhancedrc-history'],
 359                                         array(),
 360                                         $params
 361                                 );
 362                 }
 363
 364                 if ( $logtext !== '' ) {
 365                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 366                 }
 367
 368                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 369
 370                 # Character difference (does not apply if only log items)
 371                 if ( $wgRCShowChangedSize && !$allLogs ) {
 372                         $last = 0;
 373                         $first = count( $block ) - 1;
 374                         # Some events (like logs) have an "empty" size, so we need to skip those...
 375                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 376                                 $last++;
 377                         }
 378                         while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 379                                 $first--;
 380                         }
 381                         # Get net change
 382                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
 383
 384                         if ( $chardiff == '' ) {
 385                                 $r .= ' ';
 386                         } else {
 387                                 $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
 388                         }
 389                 }
 390
 391                 $r .= $users;
 392                 $r .= $this->numberofWatchingusers( $block0->numberofWatchingusers );
 393                 $r .= '</td></tr>';
 394
 395                 # Sub-entries
 396                 foreach ( $block as $rcObj ) {
 397                         # Classes to apply -- TODO implement
 398                         $classes = array();
 399                         $type = $rcObj->mAttribs['rc_type'];
 400
 401                         $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 402                                 ? ' class="mw-enhanced-watched"' : '';
 403
 404                         $r .= '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
 405                         $r .= $this->recentChangesFlags( array(
 406                                 'newpage' => $type == RC_NEW,
 407                                 'minor' => $rcObj->mAttribs['rc_minor'],
 408                                 'unpatrolled' => $rcObj->unpatrolled,
 409                                 'bot' => $rcObj->mAttribs['rc_bot'],
 410                         ) );
 411                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
 412
 413                         $params = $queryParams;
 414
 415                         if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 416                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 417                         }
 418
 419                         # Log timestamp
 420                         if ( $type == RC_LOG ) {
 421                                 $link = $rcObj->timestamp;
 422                         # Revision link
 423                         } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 424                                 $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 425                         } else {
 426
 427                                 $link = Linker::linkKnown(
 428                                         $rcObj->getTitle(),
 429                                         $rcObj->timestamp,
 430                                         array(),
 431                                         $params
 432                                 );
 433                                 if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 434                                         $link = '<span class="history-deleted">' . $link . '</span> ';
 435                                 }
 436                         }
 437                         $r .= $link . '</span>';
 438
 439                         if ( !$type == RC_LOG || $type == RC_NEW ) {
 440                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams(
 441                                         $rcObj->curlink .
 442                                                 $this->message['pipe-separator'] .
 443                                                 $rcObj->lastlink
 444                                 )->escaped();
 445                         }
 446                         $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 447
 448                         # Character diff
 449                         if ( $wgRCShowChangedSize ) {
 450                                 $cd = $this->formatCharacterDifference( $rcObj );
 451                                 if ( $cd !== '' ) {
 452                                         $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
 453                                 }
 454                         }
 455
 456                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 457                                 $r .= $this->insertLogEntry( $rcObj );
 458                         } else {
 459                                 # User links
 460                                 $r .= $rcObj->userlink;
 461                                 $r .= $rcObj->usertalklink;
 462                                 $r .= $this->insertComment( $rcObj );
 463                         }
 464
 465                         # Rollback
 466                         $this->insertRollback( $r, $rcObj );
 467                         # Tags
 468                         $this->insertTags( $r, $rcObj, $classes );
 469
 470                         $r .= "</td></tr>\n";
 471                 }
 472                 $r .= "</table>\n";
 473
 474                 $this->rcCacheIndex++;
 475
 476                 wfProfileOut( __METHOD__ );
 477
 478                 return $r;
 479         }
 480
 481         /**
 482          * Generate HTML for an arrow or placeholder graphic
 483          * @param string $dir One of '', 'd', 'l', 'r'
 484          * @param string $alt
 485          * @param string $title
 486          * @return string HTML "<img>" tag
 487          */
 488         protected function arrow( $dir, $alt = '', $title = '' ) {
 489                 global $wgStylePath;
 490                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
 491                 $encAlt = htmlspecialchars( $alt );
 492                 $encTitle = htmlspecialchars( $title );
 493
 494                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
 495         }
 496
 497         /**
 498          * Generate HTML for a right- or left-facing arrow,
 499          * depending on language direction.
 500          * @return string HTML "<img>" tag
 501          */
 502         protected function sideArrow() {
 503                 $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
 504
 505                 return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
 506         }
 507
 508         /**
 509          * Generate HTML for a down-facing arrow
 510          * depending on language direction.
 511          * @return string HTML "<img>" tag
 512          */
 513         protected function downArrow() {
 514                 return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
 515         }
 516
 517         /**
 518          * Generate HTML for a spacer image
 519          * @return string HTML "<img>" tag
 520          */
 521         protected function spacerArrow() {
 522                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
 523         }
 524
 525         /**
 526          * Enhanced RC ungrouped line.
 527          *
 528          * @param RecentChange|RCCacheEntry $rcObj
 529          * @return string A HTML formatted line (generated using $r)
 530          */
 531         protected function recentChangesBlockLine( $rcObj ) {
 532                 global $wgRCShowChangedSize;
 533
 534                 wfProfileIn( __METHOD__ );
 535                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 536
 537                 $type = $rcObj->mAttribs['rc_type'];
 538                 $logType = $rcObj->mAttribs['rc_log_type'];
 539                 $classes = array( 'mw-enhanced-rc' );
 540                 if ( $logType ) {
 541                         # Log entry
 542                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 543                 } else {
 544                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 545                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 546                 }
 547                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 548                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 549                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 550                         Html::openElement( 'tr' );
 551
 552                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 553                 # Flag and Timestamp
 554                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 555                         $r .= $this->recentChangesFlags( array() ); // no flags, but need the placeholders
 556                 } else {
 557                         $r .= $this->recentChangesFlags( array(
 558                                 'newpage' => $type == RC_NEW,
 559                                 'minor' => $rcObj->mAttribs['rc_minor'],
 560                                 'unpatrolled' => $rcObj->unpatrolled,
 561                                 'bot' => $rcObj->mAttribs['rc_bot'],
 562                         ) );
 563                 }
 564                 $r .= '&#160;' . $rcObj->timestamp . '&#160;</td><td>';
 565                 # Article or log link
 566                 if ( $logType ) {
 567                         $logPage = new LogPage( $logType );
 568                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 569                         $logName = $logPage->getName()->escaped();
 570                         $r .= $this->msg( 'parentheses' )
 571                                 ->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
 572                 } else {
 573                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 574                 }
 575                 # Diff and hist links
 576                 if ( $type != RC_LOG ) {
 577                         $query['action'] = 'history';
 578                         $r .= ' ' . $this->msg( 'parentheses' )
 579                                 ->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
 580                                         $rcObj->getTitle(),
 581                                         $this->message['hist'],
 582                                         array(),
 583                                         $query
 584                                 ) )->escaped();
 585                 }
 586                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 587                 # Character diff
 588                 if ( $wgRCShowChangedSize ) {
 589                         $cd = $this->formatCharacterDifference( $rcObj );
 590                         if ( $cd !== '' ) {
 591                                 $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
 592                         }
 593                 }
 594
 595                 if ( $type == RC_LOG ) {
 596                         $r .= $this->insertLogEntry( $rcObj );
 597                 } else {
 598                         $r .= ' ' . $rcObj->userlink . $rcObj->usertalklink;
 599                         $r .= $this->insertComment( $rcObj );
 600                         $this->insertRollback( $r, $rcObj );
 601                 }
 602
 603                 # Tags
 604                 $this->insertTags( $r, $rcObj, $classes );
 605                 # Show how many people are watching this if enabled
 606                 $r .= $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 607
 608                 $r .= "</td></tr></table>\n";
 609
 610                 wfProfileOut( __METHOD__ );
 611
 612                 return $r;
 613         }
 614
 615         /**
 616          * If enhanced RC is in use, this function takes the previously cached
 617          * RC lines, arranges them, and outputs the HTML
 618          *
 619          * @return string
 620          */
 621         protected function recentChangesBlock() {
 622                 if ( count( $this->rc_cache ) == 0 ) {
 623                         return '';
 624                 }
 625
 626                 wfProfileIn( __METHOD__ );
 627
 628                 $blockOut = '';
 629                 foreach ( $this->rc_cache as $block ) {
 630                         if ( count( $block ) < 2 ) {
 631                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 632                         } else {
 633                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 634                         }
 635                 }
 636
 637                 wfProfileOut( __METHOD__ );
 638
 639                 return '<div>' . $blockOut . '</div>';
 640         }
 641
 642         /**
 643          * Returns text for the end of RC
 644          * If enhanced RC is in use, returns pretty much all the text
 645          * @return string
 646          */
 647         public function endRecentChangesList() {
 648                 return $this->recentChangesBlock() . '</div>';
 649         }
 650 }