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 $rc
  87          * @param bool $watched
  88          * @param int $linenumber (default null)
  89          *
  90          * @return string
  91          */
  92         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
  93
  94                 $date = $this->getLanguage()->userDate(
  95                         $rc->mAttribs['rc_timestamp'],
  96                         $this->getUser()
  97                 );
  98
  99                 $ret = '';
 100
 101                 # If it's a new day, add the headline and flush the cache
 102                 if ( $date != $this->lastdate ) {
 103                         # Process current cache
 104                         $ret = $this->recentChangesBlock();
 105                         $this->rc_cache = array();
 106                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 107                         $this->lastdate = $date;
 108                 }
 109
 110                 $cacheEntry = $this->cacheEntryFactory->newFromRecentChange( $rc, $watched );
 111                 $this->addCacheEntry( $cacheEntry );
 112
 113                 return $ret;
 114         }
 115
 116         /**
 117          * Put accumulated information into the cache, for later display.
 118          * Page moves go on their own line.
 119          *
 120          * @param RCCacheEntry $cacheEntry
 121          */
 122         protected function addCacheEntry( RCCacheEntry $cacheEntry ) {
 123                 $cacheGroupingKey = $this->makeCacheGroupingKey( $cacheEntry );
 124
 125                 if ( !isset( $this->rc_cache[$cacheGroupingKey] ) ) {
 126                         $this->rc_cache[$cacheGroupingKey] = array();
 127                 }
 128
 129                 array_push( $this->rc_cache[$cacheGroupingKey], $cacheEntry );
 130         }
 131
 132         /**
 133          * @todo use rc_source to group, if set; fallback to rc_type
 134          *
 135          * @param RCCacheEntry $cacheEntry
 136          *
 137          * @return string
 138          */
 139         protected function makeCacheGroupingKey( RCCacheEntry $cacheEntry ) {
 140                 $title = $cacheEntry->getTitle();
 141                 $cacheGroupingKey = $title->getPrefixedDBkey();
 142
 143                 $type = $cacheEntry->mAttribs['rc_type'];
 144
 145                 if ( $type == RC_LOG ) {
 146                         // Group by log type
 147                         $cacheGroupingKey = SpecialPage::getTitleFor(
 148                                 'Log',
 149                                 $cacheEntry->mAttribs['rc_log_type']
 150                         )->getPrefixedDBkey();
 151                 }
 152
 153                 return $cacheGroupingKey;
 154         }
 155
 156         /**
 157          * Enhanced RC group
 158          * @param RCCacheEntry[] $block
 159          * @return string
 160          */
 161         protected function recentChangesBlockGroup( $block ) {
 162
 163                 # Add the namespace and title of the block as part of the class
 164                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 165                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 166                         # Log entry
 167                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 168                                 . $block[0]->mAttribs['rc_log_type'] );
 169                 } else {
 170                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 171                                 . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 172                 }
 173                 $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 174                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 175                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 176                         Html::openElement( 'tr' );
 177
 178                 # Collate list of users
 179                 $userlinks = array();
 180                 # Other properties
 181                 $curId = 0;
 182                 # Some catalyst variables...
 183                 $namehidden = true;
 184                 $allLogs = true;
 185                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 186                 $collectedRcFlags = array(
 187                         // All are by bots?
 188                         'bot' => true,
 189                         // Includes a new page?
 190                         'newpage' => false,
 191                         // All are minor edits?
 192                         'minor' => true,
 193                         // Contains an unpatrolled edit?
 194                         'unpatrolled' => false,
 195                 );
 196                 foreach ( $block as $rcObj ) {
 197                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 198                                 $collectedRcFlags['newpage'] = true;
 199                         }
 200                         // If all log actions to this page were hidden, then don't
 201                         // give the name of the affected page for this block!
 202                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 203                                 $namehidden = false;
 204                         }
 205                         $u = $rcObj->userlink;
 206                         if ( !isset( $userlinks[$u] ) ) {
 207                                 $userlinks[$u] = 0;
 208                         }
 209                         if ( $rcObj->unpatrolled ) {
 210                                 $collectedRcFlags['unpatrolled'] = true;
 211                         }
 212                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 213                                 $allLogs = false;
 214                         }
 215                         # Get the latest entry with a page_id and oldid
 216                         # since logs may not have these.
 217                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 218                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 219                         }
 220
 221                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 222                                 $collectedRcFlags['bot'] = false;
 223                         }
 224                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 225                                 $collectedRcFlags['minor'] = false;
 226                         }
 227
 228                         $userlinks[$u]++;
 229                 }
 230
 231                 # Sort the list and convert to text
 232                 krsort( $userlinks );
 233                 asort( $userlinks );
 234                 $users = array();
 235                 foreach ( $userlinks as $userlink => $count ) {
 236                         $text = $userlink;
 237                         $text .= $this->getLanguage()->getDirMark();
 238                         if ( $count > 1 ) {
 239                                 // @todo FIXME: Hardcoded '×'. Should be a message.
 240                                 $formattedCount = $this->getLanguage()->formatNum( $count ) . '×';
 241                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $formattedCount )->escaped();
 242                         }
 243                         array_push( $users, $text );
 244                 }
 245
 246                 $users = ' <span class="changedby">'
 247                         . $this->msg( 'brackets' )->rawParams(
 248                                 implode( $this->message['semicolon-separator'], $users )
 249                         )->escaped() . '</span>';
 250
 251                 $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow ' .
 252                         'mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
 253                 $r .= "<td>$tl</td>";
 254
 255                 # Main line
 256                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags(
 257                         $collectedRcFlags
 258                 );
 259
 260                 # Timestamp
 261                 $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';
 262
 263                 # Article link
 264                 if ( $namehidden ) {
 265                         $r .= ' <span class="history-deleted">' .
 266                                 $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 267                 } elseif ( $allLogs ) {
 268                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 269                 } else {
 270                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 271                 }
 272
 273                 $r .= $this->getLanguage()->getDirMark();
 274
 275                 $queryParams['curid'] = $curId;
 276
 277                 # Sub-entries
 278                 $lines = '';
 279                 foreach ( $block as $i => $rcObj ) {
 280                         $line = $this->getLineData( $block, $rcObj, $queryParams );
 281                         $lines .= $line;
 282                         if ( !$line ) {
 283                                 // completely ignore this RC entry if we don't want to render it
 284                                 unset( $block[$i] );
 285                         }
 286                 }
 287                 // Further down are some assumptions that $block is a 0-indexed array
 288                 // with (count-1) as last key. Let's make sure it is.
 289                 $block = array_values( $block );
 290                 if ( empty( $block ) ) {
 291                         // if we can't show anything, don't display this block altogether
 292                         return '';
 293                 }
 294
 295                 $r .= $this->getLogText( $block, $queryParams, $allLogs,
 296                         $collectedRcFlags['newpage'], $namehidden );
 297
 298                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 299
 300                 # Character difference (does not apply if only log items)
 301                 if ( $RCShowChangedSize && !$allLogs ) {
 302                         $last = 0;
 303                         $first = count( $block ) - 1;
 304                         # Some events (like logs) have an "empty" size, so we need to skip those...
 305                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 306                                 $last++;
 307                         }
 308                         while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 309                                 $first--;
 310                         }
 311                         # Get net change
 312                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
 313
 314                         if ( $chardiff == '' ) {
 315                                 $r .= ' ';
 316                         } else {
 317                                 $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
 318                         }
 319                 }
 320
 321                 $r .= $users;
 322                 $r .= $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
 323                 $r .= '</td></tr>';
 324
 325                 if ( !$lines ) {
 326                         // if there are no lines to be rendered (all aborted by hook), don't render the block
 327                         return '';
 328                 }
 329
 330                 $r .= $lines;
 331                 $r .= "</table>\n";
 332
 333                 $this->rcCacheIndex++;
 334
 335                 return $r;
 336         }
 337
 338         /**
 339          * @param RCCacheEntry[] $block
 340          * @param RCCacheEntry $rcObj
 341          * @param array $queryParams
 342          * @return string
 343          * @throws Exception
 344          * @throws FatalError
 345          * @throws MWException
 346          */
 347         protected function getLineData( array $block, RCCacheEntry $rcObj, array $queryParams = array() ) {
 348                 $RCShowChangedSize = $this->getConfig()->get( 'RCShowChangedSize' );
 349
 350                 # Classes to apply -- TODO implement
 351                 $classes = array();
 352                 $type = $rcObj->mAttribs['rc_type'];
 353                 $data = array();
 354
 355                 $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 356                         ? ' class="mw-enhanced-watched"' : '';
 357                 $separator = ' <span class="mw-changeslist-separator">. .</span> ';
 358
 359                 $data['recentChangesFlags'] = array(
 360                         'newpage' => $type == RC_NEW,
 361                         'minor' => $rcObj->mAttribs['rc_minor'],
 362                         'unpatrolled' => $rcObj->unpatrolled,
 363                         'bot' => $rcObj->mAttribs['rc_bot'],
 364                 );
 365
 366                 $params = $queryParams;
 367
 368                 if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 369                         $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 370                 }
 371
 372                 # Log timestamp
 373                 if ( $type == RC_LOG ) {
 374                         $link = $rcObj->timestamp;
 375                         # Revision link
 376                 } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 377                         $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 378                 } else {
 379                         $link = Linker::linkKnown(
 380                                 $rcObj->getTitle(),
 381                                 $rcObj->timestamp,
 382                                 array(),
 383                                 $params
 384                         );
 385                         if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 386                                 $link = '<span class="history-deleted">' . $link . '</span> ';
 387                         }
 388                 }
 389                 $data['timestampLink'] = $link;
 390
 391                 $currentAndLastLinks = '';
 392                 if ( !$type == RC_LOG || $type == RC_NEW ) {
 393                         $currentAndLastLinks .= ' ' . $this->msg( 'parentheses' )->rawParams(
 394                                         $rcObj->curlink .
 395                                         $this->message['pipe-separator'] .
 396                                         $rcObj->lastlink
 397                                 )->escaped();
 398                 }
 399                 $data['currentAndLastLinks'] = $currentAndLastLinks;
 400                 $data['separatorAfterCurrentAndLastLinks'] = $separator;
 401
 402                 # Character diff
 403                 if ( $RCShowChangedSize ) {
 404                         $cd = $this->formatCharacterDifference( $rcObj );
 405                         if ( $cd !== '' ) {
 406                                 $data['characterDiff'] = $cd;
 407                                 $data['separatorAfterCharacterDiff'] = $separator;
 408                         }
 409                 }
 410
 411                 if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 412                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 413                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 414                         $data['comment'] = $this->insertComment( $rcObj );
 415                 } else {
 416                         # User links
 417                         $data['userLink'] = $rcObj->userlink;
 418                         $data['userTalkLink'] = $rcObj->usertalklink;
 419                         $data['comment'] = $this->insertComment( $rcObj );
 420                 }
 421
 422                 # Rollback
 423                 $data['rollback'] = $this->getRollback( $rcObj );
 424
 425                 # Tags
 426                 $data['tags'] = $this->getTags( $rcObj, $classes );
 427
 428                 // give the hook a chance to modify the data
 429                 $success = Hooks::run( 'EnhancedChangesListModifyLineData',
 430                         array( $this, &$data, $block, $rcObj ) );
 431                 if ( !$success ) {
 432                         // skip entry if hook aborted it
 433                         return '';
 434                 }
 435
 436                 $line = '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
 437                 if ( isset( $data['recentChangesFlags'] ) ) {
 438                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 439                         unset( $data['recentChangesFlags'] );
 440                 }
 441                 $line .= '&#160;</td><td class="mw-enhanced-rc-nested">';
 442
 443                 if ( isset( $data['timestampLink'] ) ) {
 444                         $line .= '<span class="mw-enhanced-rc-time">' . $data['timestampLink'] . '</span>';
 445                         unset( $data['timestampLink'] );
 446                 }
 447
 448                 // everything else: makes it easier for extensions to add or remove data
 449                 $line .= implode( '', $data );
 450
 451                 $line .= "</td></tr>\n";
 452
 453                 return $line;
 454         }
 455
 456         /**
 457          * Generates amount of changes (linking to diff ) & link to history.
 458          *
 459          * @param array $block
 460          * @param array $queryParams
 461          * @param bool $allLogs
 462          * @param bool $isnew
 463          * @param bool $namehidden
 464          * @return string
 465          */
 466         protected function getLogText( $block, $queryParams, $allLogs, $isnew, $namehidden ) {
 467                 if ( empty( $block ) ) {
 468                         return '';
 469                 }
 470
 471                 # Changes message
 472                 static $nchanges = array();
 473                 static $sinceLastVisitMsg = array();
 474
 475                 $n = count( $block );
 476                 if ( !isset( $nchanges[$n] ) ) {
 477                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 478                 }
 479
 480                 $sinceLast = 0;
 481                 $unvisitedOldid = null;
 482                 /** @var $rcObj RCCacheEntry */
 483                 foreach ( $block as $rcObj ) {
 484                         // Same logic as below inside main foreach
 485                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 486                                 $sinceLast++;
 487                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 488                         }
 489                 }
 490                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 491                         $sinceLastVisitMsg[$sinceLast] =
 492                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 493                 }
 494
 495                 $currentRevision = 0;
 496                 foreach ( $block as $rcObj ) {
 497                         if ( !$currentRevision ) {
 498                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 499                         }
 500                 }
 501
 502                 # Total change link
 503                 $links = array();
 504                 /** @var $block0 RecentChange */
 505                 $block0 = $block[0];
 506                 $last = $block[count( $block ) - 1];
 507                 if ( !$allLogs && $rcObj->mAttribs['rc_type'] != RC_CATEGORIZE ) {
 508                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 509                                 $links['total-changes'] = $nchanges[$n];
 510                         } elseif ( $isnew ) {
 511                                 $links['total-changes'] = $nchanges[$n];
 512                         } else {
 513                                 $links['total-changes'] = Linker::link(
 514                                         $block0->getTitle(),
 515                                         $nchanges[$n],
 516                                         array(),
 517                                         $queryParams + array(
 518                                                 'diff' => $currentRevision,
 519                                                 'oldid' => $last->mAttribs['rc_last_oldid'],
 520                                         ),
 521                                         array( 'known', 'noclasses' )
 522                                 );
 523                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 524                                         $links['total-changes-since-last'] = Linker::link(
 525                                                         $block0->getTitle(),
 526                                                         $sinceLastVisitMsg[$sinceLast],
 527                                                         array(),
 528                                                         $queryParams + array(
 529                                                                 'diff' => $currentRevision,
 530                                                                 'oldid' => $unvisitedOldid,
 531                                                         ),
 532                                                         array( 'known', 'noclasses' )
 533                                                 );
 534                                 }
 535                         }
 536                 }
 537
 538                 # History
 539                 if ( $allLogs || $rcObj->mAttribs['rc_type'] == RC_CATEGORIZE ) {
 540                         // don't show history link for logs
 541                 } elseif ( $namehidden || !$block0->getTitle()->exists() ) {
 542                         $links['history'] = $this->message['enhancedrc-history'];
 543                 } else {
 544                         $params = $queryParams;
 545                         $params['action'] = 'history';
 546
 547                         $links['history'] = Linker::linkKnown(
 548                                         $block0->getTitle(),
 549                                         $this->message['enhancedrc-history'],
 550                                         array(),
 551                                         $params
 552                                 );
 553                 }
 554
 555                 # Allow others to alter, remove or add to these links
 556                 Hooks::run( 'EnhancedChangesList::getLogText',
 557                         array( $this, &$links, $block ) );
 558
 559                 if ( !$links ) {
 560                         return '';
 561                 }
 562
 563                 $logtext = implode( $this->message['pipe-separator'], $links );
 564                 $logtext = $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 565                 return ' ' . $logtext;
 566         }
 567
 568         /**
 569          * Enhanced RC ungrouped line.
 570          *
 571          * @param RecentChange|RCCacheEntry $rcObj
 572          * @return string A HTML formatted line (generated using $r)
 573          */
 574         protected function recentChangesBlockLine( $rcObj ) {
 575                 $data = array();
 576
 577                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 578
 579                 $type = $rcObj->mAttribs['rc_type'];
 580                 $logType = $rcObj->mAttribs['rc_log_type'];
 581                 $classes = array( 'mw-enhanced-rc' );
 582                 if ( $logType ) {
 583                         # Log entry
 584                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-' . $logType );
 585                 } else {
 586                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 587                                 $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 588                 }
 589                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 590                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 591
 592                 # Flag and Timestamp
 593                 $data['recentChangesFlags'] = array(
 594                         'newpage' => $type == RC_NEW,
 595                         'minor' => $rcObj->mAttribs['rc_minor'],
 596                         'unpatrolled' => $rcObj->unpatrolled,
 597                         'bot' => $rcObj->mAttribs['rc_bot'],
 598                 );
 599                 // timestamp is not really a link here, but is called timestampLink
 600                 // for consistency with EnhancedChangesListModifyLineData
 601                 $data['timestampLink'] = $rcObj->timestamp;
 602
 603                 # Article or log link
 604                 if ( $logType ) {
 605                         $logPage = new LogPage( $logType );
 606                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 607                         $logName = $logPage->getName()->escaped();
 608                         $data['logLink'] = $this->msg( 'parentheses' )
 609                                 ->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
 610                 } else {
 611                         $data['articleLink'] = $this->getArticleLink( $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 612                 }
 613
 614                 # Diff and hist links
 615                 if ( $type != RC_LOG && $type != RC_CATEGORIZE ) {
 616                         $query['action'] = 'history';
 617                         $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 618                 }
 619                 $data['separatorAfterLinks'] = ' <span class="mw-changeslist-separator">. .</span> ';
 620
 621                 # Character diff
 622                 if ( $this->getConfig()->get( 'RCShowChangedSize' ) ) {
 623                         $cd = $this->formatCharacterDifference( $rcObj );
 624                         if ( $cd !== '' ) {
 625                                 $data['characterDiff'] = $cd;
 626                                 $data['separatorAftercharacterDiff'] = ' <span class="mw-changeslist-separator">. .</span> ';
 627                         }
 628                 }
 629
 630                 if ( $type == RC_LOG ) {
 631                         $data['logEntry'] = $this->insertLogEntry( $rcObj );
 632                 } elseif ( $this->isCategorizationWithoutRevision( $rcObj ) ) {
 633                         $data['comment'] = $this->insertComment( $rcObj );
 634                 } else {
 635                         $data['userLink'] = $rcObj->userlink;
 636                         $data['userTalkLink'] = $rcObj->usertalklink;
 637                         $data['comment'] = $this->insertComment( $rcObj );
 638                         if ( $type == RC_CATEGORIZE ) {
 639                                 $data['historyLink'] = $this->getDiffHistLinks( $rcObj, $query );
 640                         }
 641                         $data['rollback'] = $this->getRollback( $rcObj );
 642                 }
 643
 644                 # Tags
 645                 $data['tags'] = $this->getTags( $rcObj, $classes );
 646
 647                 # Show how many people are watching this if enabled
 648                 $data['watchingUsers'] = $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 649
 650                 // give the hook a chance to modify the data
 651                 $success = Hooks::run( 'EnhancedChangesListModifyBlockLineData',
 652                         array( $this, &$data, $rcObj ) );
 653                 if ( !$success ) {
 654                         // skip entry if hook aborted it
 655                         return '';
 656                 }
 657
 658                 $line = Html::openElement( 'table', array( 'class' => $classes ) ) .
 659                         Html::openElement( 'tr' );
 660                 $line .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 661
 662                 if ( isset( $data['recentChangesFlags'] ) ) {
 663                         $line .= $this->recentChangesFlags( $data['recentChangesFlags'] );
 664                         unset( $data['recentChangesFlags'] );
 665                 }
 666
 667                 if ( isset( $data['timestampLink'] ) ) {
 668                         $line .= '&#160;' . $data['timestampLink'];
 669                         unset( $data['timestampLink'] );
 670                 }
 671                 $line .= '&#160;</td><td>';
 672
 673                 // everything else: makes it easier for extensions to add or remove data
 674                 $line .= implode( '', $data );
 675
 676                 $line .= "</td></tr></table>\n";
 677
 678                 return $line;
 679         }
 680
 681         /**
 682          * Returns value to be used in 'historyLink' element of $data param in
 683          * EnhancedChangesListModifyBlockLineData hook.
 684          *
 685          * @since 1.27
 686          *
 687          * @param RCCacheEntry $rc
 688          * @param array $query array of key/value pairs to append as a query string
 689          * @return string HTML
 690          */
 691         public function getDiffHistLinks( RCCacheEntry $rc, array $query ) {
 692                 $pageTitle = $rc->getTitle();
 693                 if ( $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE ) {
 694                         // For categorizations we must swap the category title with the page title!
 695                         $pageTitle = Title::newFromID( $rc->getAttribute( 'rc_cur_id' ) );
 696                 }
 697
 698                 $retVal = ' ' . $this->msg( 'parentheses' )
 699                                 ->rawParams( $rc->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
 700                                                 $pageTitle,
 701                                                 $this->message['hist'],
 702                                                 array(),
 703                                                 $query
 704                                         ) )->escaped();
 705                 return $retVal;
 706         }
 707
 708         /**
 709          * If enhanced RC is in use, this function takes the previously cached
 710          * RC lines, arranges them, and outputs the HTML
 711          *
 712          * @return string
 713          */
 714         protected function recentChangesBlock() {
 715                 if ( count( $this->rc_cache ) == 0 ) {
 716                         return '';
 717                 }
 718
 719                 $blockOut = '';
 720                 foreach ( $this->rc_cache as $block ) {
 721                         if ( count( $block ) < 2 ) {
 722                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 723                         } else {
 724                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 725                         }
 726                 }
 727
 728                 return '<div>' . $blockOut . '</div>';
 729         }
 730
 731         /**
 732          * Returns text for the end of RC
 733          * If enhanced RC is in use, returns pretty much all the text
 734          * @return string
 735          */
 736         public function endRecentChangesList() {
 737                 return $this->recentChangesBlock() . '</div>';
 738         }
 739 }