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          * @throws MWException
  38          */
  39         public function __construct( $obj ) {
  40                 if ( $obj instanceof Skin ) {
  41                         // @todo: deprecate constructing with Skin
  42                         $context = $obj->getContext();
  43                 } else {
  44                         if ( !$obj instanceof IContextSource ) {
  45                                 throw new MWException( 'EnhancedChangesList must be constructed with a '
  46                                         . 'context source or skin.' );
  47                         }
  48
  49                         $context = $obj;
  50                 }
  51
  52                 parent::__construct( $context );
  53
  54                 // message is set by the parent ChangesList class
  55                 $this->cacheEntryFactory = new RCCacheEntryFactory(
  56                         $context,
  57                         $this->message
  58                 );
  59         }
  60
  61         /**
  62          * Add the JavaScript file for enhanced changeslist
  63          * @return string
  64          */
  65         public function beginRecentChangesList() {
  66                 $this->rc_cache = array();
  67                 $this->rcMoveIndex = 0;
  68                 $this->rcCacheIndex = 0;
  69                 $this->lastdate = '';
  70                 $this->rclistOpen = false;
  71                 $this->getOutput()->addModuleStyles( array(
  72                         'mediawiki.special.changeslist',
  73                         'mediawiki.special.changeslist.enhanced',
  74                 ) );
  75                 $this->getOutput()->addModules( array(
  76                         'jquery.makeCollapsible',
  77                         'mediawiki.icon',
  78                 ) );
  79
  80                 return '<div class="mw-changeslist">';
  81         }
  82
  83         /**
  84          * Format a line for enhanced recentchange (aka with javascript and block of lines).
  85          *
  86          * @param RecentChange $baseRC
  87          * @param bool $watched
  88          *
  89          * @return string
  90          */
  91         public function recentChangesLine( &$baseRC, $watched = false ) {
  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                 return $ret;
 113         }
 114
 115         /**
 116          * Put accumulated information into the cache, for later display.
 117          * Page moves go on their own line.
 118          *
 119          * @param RCCacheEntry $cacheEntry
 120          */
 121         protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
 122                 $cacheGroupingKey = $this->makeCacheGroupingKey( $cacheEntry );
 123
 124                 if ( !isset( $this->rc_cache[$cacheGroupingKey] ) ) {
 125                         $this->rc_cache[$cacheGroupingKey] = array();
 126                 }
 127
 128                 array_push( $this->rc_cache[$cacheGroupingKey], $cacheEntry );
 129         }
 130
 131         /**
 132          * @todo use rc_source to group, if set; fallback to rc_type
 133          *
 134          * @param RCCacheEntry $cacheEntry
 135          *
 136          * @return string
 137          */
 138         protected function makeCacheGroupingKey( RCCacheEntry $cacheEntry ) {
 139                 $title = $cacheEntry->getTitle();
 140                 $cacheGroupingKey = $title->getPrefixedDBkey();
 141
 142                 $type = $cacheEntry->mAttribs['rc_type'];
 143
 144                 if ( $type == RC_LOG ) {
 145                         // Group by log type
 146                         $cacheGroupingKey = SpecialPage::getTitleFor(
 147                                 'Log',
 148                                 $cacheEntry->mAttribs['rc_log_type']
 149                         )->getPrefixedDBkey();
 150                 }
 151
 152                 return $cacheGroupingKey;
 153         }
 154
 155         /**
 156          * Enhanced RC group
 157          * @param RCCacheEntry[] $block
 158          * @return string
 159          */
 160         protected function recentChangesBlockGroup( $block ) {
 161
 162                 # Add the namespace and title of the block as part of the class
 163                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 164                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 165                         # Log entry
 166                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 167                                 . $block[0]->mAttribs['rc_log_type'] );
 168                 } else {
 169                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 170                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 171                 }
 172                 $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 173                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 174                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 175                         Html::openElement( 'tr' );
 176
 177                 # Collate list of users
 178                 $userlinks = array();
 179                 # Other properties
 180                 $unpatrolled = false;
 181                 $isnew = false;
 182                 $allBots = true;
 183                 $allMinors = true;
 184                 $curId = 0;
 185                 # Some catalyst variables...
 186                 $namehidden = true;
 187                 $allLogs = true;
 188                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 189                 foreach ( $block as $rcObj ) {
 190                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 191                                 $isnew = true;
 192                         }
 193                         // If all log actions to this page were hidden, then don't
 194                         // give the name of the affected page for this block!
 195                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 196                                 $namehidden = false;
 197                         }
 198                         $u = $rcObj->userlink;
 199                         if ( !isset( $userlinks[$u] ) ) {
 200                                 $userlinks[$u] = 0;
 201                         }
 202                         if ( $rcObj->unpatrolled ) {
 203                                 $unpatrolled = true;
 204                         }
 205                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 206                                 $allLogs = false;
 207                         }
 208                         # Get the latest entry with a page_id and oldid
 209                         # since logs may not have these.
 210                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 211                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 212                         }
 213
 214                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 215                                 $allBots = false;
 216                         }
 217                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 218                                 $allMinors = false;
 219                         }
 220
 221                         $userlinks[$u]++;
 222                 }
 223
 224                 # Sort the list and convert to text
 225                 krsort( $userlinks );
 226                 asort( $userlinks );
 227                 $users = array();
 228                 foreach ( $userlinks as $userlink => $count ) {
 229                         $text = $userlink;
 230                         $text .= $this->getLanguage()->getDirMark();
 231                         if ( $count > 1 ) {
 232                                 // @todo FIXME: Hardcoded '×'. Should be a message.
 233                                 $formattedCount = $this->getLanguage()->formatNum( $count ) . '×';
 234                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 235                         }
 236                         array_push( $users, $text );
 237                 }
 238
 239                 $users = ' <span class="changedby">'
 240                         . $this->msg( 'brackets' )->rawParams(
 241                                 implode( $this->message['semicolon-separator'], $users )
 242                         )->escaped() . '</span>';
 243
 244                 $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow ' .
 245                         'mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
 246                 $r .= "<td>$tl</td>";
 247
 248                 # Main line
 249                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 250                         'newpage' => $isnew, # show, when one have this flag
 251                         'minor' => $allMinors, # show only, when all have this flag
 252                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 253                         'bot' => $allBots, # show only, when all have this flag
 254                 ) );
 255
 256                 # Timestamp
 257                 $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';
 258
 259                 # Article link
 260                 if ( $namehidden ) {
 261                         $r .= ' <span class="history-deleted">' .
 262                                 $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 263                 } elseif ( $allLogs ) {
 264                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 265                 } else {
 266                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 267                 }
 268
 269                 $r .= $this->getLanguage()->getDirMark();
 270
 271                 $queryParams['curid'] = $curId;
 272
 273                 # Sub-entries
 274                 $lines = '';
 275                 foreach ( $block as $i => $rcObj ) {
 276                         $line = $this->getLineData( $block, $rcObj, $queryParams );
 277                         $lines .= $line;
 278                         if ( !$line ) {
 279                                 // completely ignore this RC entry if we don't want to render it
 280                                 unset( $block[$i] );
 281                         }
 282                 }
 283                 // Further down are some assumptions that $block is a 0-indexed array
 284                 // with (count-1) as last key. Let's make sure it is.
 285                 $block = array_values( $block );
 286
 287                 $r .= $this->getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden );
 288
 289                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 290
 291                 # Character difference (does not apply if only log items)
 292                 if ( $RCShowChangedSize && !$allLogs ) {
 293                         $last = 0;
 294                         $first = count( $block ) - 1;
 295                         # Some events (like logs) have an "empty" size, so we need to skip those...
 296                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 297                                 $last++;
 298                         }
 299                         while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 300                                 $first--;
 301                         }
 302                         # Get net change
 303                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
 304
 305                         if ( $chardiff == '' ) {
 306                                 $r .= ' ';
 307                         } else {
 308                                 $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
 309                         }
 310                 }
 311
 312                 $r .= $users;
 313                 $r .= $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
 314                 $r .= '</td></tr>';
 315
 316                 if ( !$lines ) {
 317                         // if there are no lines to be rendered (all aborted by hook), don't render the block
 318                         return '';
 319                 }
 320
 321                 $r .= $lines;
 322                 $r .= "</table>\n";
 323
 324                 $this->rcCacheIndex++;
 325
 326                 return $r;
 327         }
 328
 329         /**
 330          * @param RCCacheEntry[] $block
 331          * @param RCCacheEntry $rcObj
 332          * @param array $queryParams
 333          * @return string
 334          * @throws Exception
 335          * @throws FatalError
 336          * @throws MWException
 337          */
 338         protected function getLineData( array $block, RCCacheEntry $rcObj, array $queryParams = array() ) {
 339                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 340
 341                 # Classes to apply -- TODO implement
 342                 $classes = array();
 343                 $type = $rcObj->mAttribs['rc_type'];
 344                 $data = array();
 345
 346                 $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 347                         ? ' class="mw-enhanced-watched"' : '';
 348                 $separator = ' <span class="mw-changeslist-separator">. .</span> ';
 349
 350                 $data['recentChangesFlags'] = array(
 351                         'newpage' => $type == RC_NEW,
 352                         'minor' => $rcObj->mAttribs['rc_minor'],
 353                         'unpatrolled' => $rcObj->unpatrolled,
 354                         'bot' => $rcObj->mAttribs['rc_bot'],
 355                 );
 356
 357                 $params = $queryParams;
 358
 359                 if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 360                         $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 361                 }
 362
 363                 # Log timestamp
 364                 if ( $type == RC_LOG ) {
 365                         $link = $rcObj->timestamp;
 366                         # Revision link
 367                 } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 368                         $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 369                 } else {
 370                         $link = Linker::linkKnown(
 371                                 $rcObj->getTitle(),
 372                                 $rcObj->timestamp,
 373                                 array(),
 374                                 $params
 375                         );
 376                         if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 377                                 $link = '<span class="history-deleted">' . $link . '</span> ';
 378                         }
 379                 }
 380                 $data['timestampLink'] = $link;
 381
 382                 $currentAndLastLinks = '';
 383                 if ( !$type == RC_LOG || $type == RC_NEW ) {
 384                         $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
 385                                         $rcObj->curlink .
 386                                         $this->message['pipe-separator'] .
 387                                         $rcObj->lastlink
 388                                 )->escaped();
 389                 }
 390                 $data['currentAndLastLinks'] = $currentAndLastLinks;
 391                 $data['separatorAfterCurrentAndLastLinks'] = $separator;
 392
 393                 # Character diff
 394                 if ( $RCShowChangedSize ) {
 395                         $cd = $this->formatCharacterDifference( $rcObj );
 396                         if ( $cd !== '' ) {
 397                                 $data['characterDiff'] = $cd;
 398                                 $data['separatorAfterCharacterDiff'] = $separator;
 399                         }
 400                 }
 401
 402                 if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 403                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 404                 } else {
 405                         # User links
 406                         $data['userLink'] = $rcObj->userlink;
 407                         $data['userTalkLink'] = $rcObj->usertalklink;
 408                         $data['comment'] = $this->insertComment( $rcObj );
 409                 }
 410
 411                 # Rollback
 412                 $data['rollback'] = $this->getRollback( $rcObj );
 413
 414                 # Tags
 415                 $data['tags'] = $this->getTags( $rcObj, $classes );
 416
 417                 // give the hook a chance to modify the data
 418                 $success = Hooks::run( 'EnhancedChangesListModifyLineData',
 419                         array( $this, &$data, $block, $rcObj ) );
 420                 if ( !$success ) {
 421                         // skip entry if hook aborted it
 422                         return '';
 423                 }
 424
 425                 $line = '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
 426                 if ( isset( $data['recentChangesFlags'] ) ) {
 427                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 428                         unset( $data['recentChangesFlags'] );
 429                 }
 430                 $line .= '&#160;</td><td class="mw-enhanced-rc-nested">';
 431
 432                 if ( isset( $data['timestampLink'] ) ) {
 433                         $line .= '<span class="mw-enhanced-rc-time">' . $data['timestampLink'] . '</span>';
 434                         unset( $data['timestampLink'] );
 435                 }
 436
 437                 // everything else: makes it easier for extensions to add or remove data
 438                 $line .= implode( '', $data );
 439
 440                 $line .= "</td></tr>\n";
 441
 442                 return $line;
 443         }
 444
 445         /**
 446          * Generates amount of changes (linking to diff ) & link to history.
 447          *
 448          * @param array $block
 449          * @param array $queryParams
 450          * @param bool $allLogs
 451          * @param bool $isnew
 452          * @param bool $namehidden
 453          * @return string
 454          */
 455         protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
 456                 # Changes message
 457                 static $nchanges = array();
 458                 static $sinceLastVisitMsg = array();
 459
 460                 $n = count( $block );
 461                 if ( !isset( $nchanges[$n] ) ) {
 462                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 463                 }
 464
 465                 $sinceLast = 0;
 466                 $unvisitedOldid = null;
 467                 /** @var $rcObj RCCacheEntry */
 468                 foreach ( $block as $rcObj ) {
 469                         // Same logic as below inside main foreach
 470                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 471                                 $sinceLast++;
 472                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 473                         }
 474                 }
 475                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 476                         $sinceLastVisitMsg[$sinceLast] =
 477                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 478                 }
 479
 480                 $currentRevision = 0;
 481                 foreach ( $block as $rcObj ) {
 482                         if ( !$currentRevision ) {
 483                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 484                         }
 485                 }
 486
 487                 # Total change link
 488                 $links = array();
 489                 /** @var $block0 RecentChange */
 490                 $block0 = $block[0];
 491                 $last = $block[count( $block ) - 1];
 492                 if ( !$allLogs ) {
 493                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 494                                 $links['total-changes'] = $nchanges[$n];
 495                         } elseif ( $isnew ) {
 496                                 $links['total-changes'] = $nchanges[$n];
 497                         } else {
 498                                 $links['total-changes'] = Linker::link(
 499                                         $block0->getTitle(),
 500                                         $nchanges[$n],
 501                                         array(),
 502                                         $queryParams + array(
 503                                                 'diff' => $currentRevision,
 504                                                 'oldid' => $last->mAttribs['rc_last_oldid'],
 505                                         ),
 506                                         array( 'known', 'noclasses' )
 507                                 );
 508                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 509                                         $links['total-changes-since-last'] = Linker::link(
 510                                                         $block0->getTitle(),
 511                                                         $sinceLastVisitMsg[$sinceLast],
 512                                                         array(),
 513                                                         $queryParams + array(
 514                                                                 'diff' => $currentRevision,
 515                                                                 'oldid' => $unvisitedOldid,
 516                                                         ),
 517                                                         array( 'known', 'noclasses' )
 518                                                 );
 519                                 }
 520                         }
 521                 }
 522
 523                 # History
 524                 if ( $allLogs ) {
 525                         // don't show history link for logs
 526                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 527                         $links['history'] = $this->message['enhancedrc-history'];
 528                 } else {
 529                         $params = $queryParams;
 530                         $params['action'] = 'history';
 531
 532                         $links['history'] = Linker::linkKnown(
 533                                         $block0->getTitle(),
 534                                         $this->message['enhancedrc-history'],
 535                                         array(),
 536                                         $params
 537                                 );
 538                 }
 539
 540                 # Allow others to alter, remove or add to these links
 541                 Hooks::run( 'EnhancedChangesList::getLogText',
 542                         array( $this, &$links, $block ) );
 543
 544                 if ( !$links ) {
 545                         return '';
 546                 }
 547
 548                 $logtext = implode( $this->message['pipe-separator'], $links );
 549                 $logtext = $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 550                 return ' ' . $logtext;
 551         }
 552
 553         /**
 554          * Enhanced RC ungrouped line.
 555          *
 556          * @param RecentChange|RCCacheEntry $rcObj
 557          * @return string A HTML formatted line (generated using $r)
 558          */
 559         protected function recentChangesBlockLine( $rcObj ) {
 560                 $data = array();
 561
 562                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 563
 564                 $type = $rcObj->mAttribs['rc_type'];
 565                 $logType = $rcObj->mAttribs['rc_log_type'];
 566                 $classes = array( 'mw-enhanced-rc' );
 567                 if ( $logType ) {
 568                         # Log entry
 569                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 570                 } else {
 571                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 572                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 573                 }
 574                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 575                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 576
 577                 # Flag and Timestamp
 578                 $data['recentChangesFlags'] = array(
 579                         'newpage' => $type == RC_NEW,
 580                         'minor' => $rcObj->mAttribs['rc_minor'],
 581                         'unpatrolled' => $rcObj->unpatrolled,
 582                         'bot' => $rcObj->mAttribs['rc_bot'],
 583                 );
 584                 // timestamp is not really a link here, but is called timestampLink
 585                 // for consistency with EnhancedChangesListModifyLineData
 586                 $data['timestampLink'] = $rcObj->timestamp;
 587
 588                 # Article or log link
 589                 if ( $logType ) {
 590                         $logPage = new LogPage( $logType );
 591                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 592                         $logName = $logPage->getName()->escaped();
 593                         $data['logLink'] = $this->msg( 'parentheses' )
 594                                 ->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
 595                 } else {
 596                         $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 597                 }
 598
 599                 # Diff and hist links
 600                 if ( $type != RC_LOG ) {
 601                         $query['action'] = 'history';
 602                         $data['historyLink'] = ' ' . $this->msg( 'parentheses' )
 603                                 ->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
 604                                         $rcObj->getTitle(),
 605                                         $this->message['hist'],
 606                                         array(),
 607                                         $query
 608                                 ) )->escaped();
 609                 }
 610                 $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator">. .</span> ';
 611
 612                 # Character diff
 613                 if ( $this->getConfig()->get( 'RCShowChangedSize' ) ) {
 614                         $cd = $this->formatCharacterDifference( $rcObj );
 615                         if ( $cd !== '' ) {
 616                                 $data['characterDiff'] = $cd;
 617                                 $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator">. .</span> ';
 618                         }
 619                 }
 620
 621                 if ( $type == RC_LOG ) {
 622                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 623                 } else {
 624                         $data['userLink'] = $rcObj->userlink;
 625                         $data['userTalkLink'] = $rcObj->usertalklink;
 626                         $data['comment'] = $this->insertComment( $rcObj );
 627                         $data['rollback'] = $this->getRollback( $rcObj );
 628                 }
 629
 630                 # Tags
 631                 $data['tags'] = $this->getTags( $rcObj, $classes );
 632
 633                 # Show how many people are watching this if enabled
 634                 $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 635
 636                 // give the hook a chance to modify the data
 637                 $success = Hooks::run( 'EnhancedChangesListModifyBlockLineData',
 638                         array( $this, &$data, $rcObj ) );
 639                 if ( !$success ) {
 640                         // skip entry if hook aborted it
 641                         return '';
 642                 }
 643
 644                 $line = Html::openElement( 'table', array( 'class' => $classes ) ) .
 645                         Html::openElement( 'tr' );
 646                 $line .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 647
 648                 if ( isset( $data['recentChangesFlags'] ) ) {
 649                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 650                         unset( $data['recentChangesFlags'] );
 651                 }
 652
 653                 if ( isset( $data['timestampLink'] ) ) {
 654                         $line .= '&#160;' . $data['timestampLink'];
 655                         unset( $data['timestampLink'] );
 656                 }
 657                 $line .= '&#160;</td><td>';
 658
 659                 // everything else: makes it easier for extensions to add or remove data
 660                 $line .= implode( '', $data );
 661
 662                 $line .= "</td></tr></table>\n";
 663
 664                 return $line;
 665         }
 666
 667         /**
 668          * If enhanced RC is in use, this function takes the previously cached
 669          * RC lines, arranges them, and outputs the HTML
 670          *
 671          * @return string
 672          */
 673         protected function recentChangesBlock() {
 674                 if ( count( $this->rc_cache ) == 0 ) {
 675                         return '';
 676                 }
 677
 678                 $blockOut = '';
 679                 foreach ( $this->rc_cache as $block ) {
 680                         if ( count( $block ) < 2 ) {
 681                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 682                         } else {
 683                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 684                         }
 685                 }
 686
 687                 return '<div>' . $blockOut . '</div>';
 688         }
 689
 690         /**
 691          * Returns text for the end of RC
 692          * If enhanced RC is in use, returns pretty much all the text
 693          * @return string
 694          */
 695         public function endRecentChangesList() {
 696                 return $this->recentChangesBlock() . '</div>';
 697         }
 698 }