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         protected $rc_cache;
  26
  27         /**
  28          * Add the JavaScript file for enhanced changeslist
  29          * @return String
  30          */
  31         public function beginRecentChangesList() {
  32                 $this->rc_cache = array();
  33                 $this->rcMoveIndex = 0;
  34                 $this->rcCacheIndex = 0;
  35                 $this->lastdate = '';
  36                 $this->rclistOpen = false;
  37                 $this->getOutput()->addModuleStyles( array(
  38                         'mediawiki.special.changeslist',
  39                         'mediawiki.special.changeslist.enhanced',
  40                 ) );
  41                 $this->getOutput()->addModules( array(
  42                         'jquery.makeCollapsible',
  43                         'mediawiki.icon',
  44                 ) );
  45
  46                 return '';
  47         }
  48
  49         /**
  50          * Format a line for enhanced recentchange (aka with javascript and block of lines).
  51          *
  52          * @param $baseRC RecentChange
  53          * @param $watched bool
  54          *
  55          * @return string
  56          */
  57         public function recentChangesLine( &$baseRC, $watched = false ) {
  58                 wfProfileIn( __METHOD__ );
  59
  60                 # Create a specialised object
  61                 $cacheEntry = RCCacheEntry::newFromParent( $baseRC );
  62
  63                 $curIdEq = array( 'curid' => $cacheEntry->mAttribs['rc_cur_id'] );
  64
  65                 # If it's a new day, add the headline and flush the cache
  66                 $date = $this->getLanguage()->userDate(
  67                         $cacheEntry->mAttribs['rc_timestamp'],
  68                         $this->getUser()
  69                 );
  70
  71                 $ret = '';
  72
  73                 if ( $date != $this->lastdate ) {
  74                         # Process current cache
  75                         $ret = $this->recentChangesBlock();
  76                         $this->rc_cache = array();
  77                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
  78                         $this->lastdate = $date;
  79                 }
  80
  81                 # Should patrol-related stuff be shown?
  82                 $cacheEntry->unpatrolled = $this->showAsUnpatrolled( $cacheEntry );
  83
  84                 $showdifflinks = true;
  85
  86                 # Make article link
  87                 $type = $cacheEntry->mAttribs['rc_type'];
  88                 $logType = $cacheEntry->mAttribs['rc_log_type'];
  89
  90                 // Page moves, very old style, not supported anymore
  91                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
  92                 // New unpatrolled pages
  93                 } elseif ( $cacheEntry->unpatrolled && $type == RC_NEW ) {
  94                         $clink = Linker::linkKnown( $cacheEntry->getTitle() );
  95                 // Log entries
  96                 } elseif ( $type == RC_LOG ) {
  97                         if ( $logType ) {
  98                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
  99                                 $logpage = new LogPage( $logType );
 100                                 $logname = $logpage->getName()->escaped();
 101                                 $clink = $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logtitle, $logname ) )->escaped();
 102                         } else {
 103                                 $clink = Linker::link( $cacheEntry->getTitle() );
 104                         }
 105                         $watched = false;
 106                 // Log entries (old format) and special pages
 107                 } elseif ( $cacheEntry->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 108                         wfDebug( "Unexpected special page in recentchanges\n" );
 109                         $clink = '';
 110                 // Edits
 111                 } else {
 112                         $clink = Linker::linkKnown( $cacheEntry->getTitle() );
 113                 }
 114
 115                 # Don't show unusable diff links
 116                 if ( !ChangesList::userCan( $cacheEntry, Revision::DELETED_TEXT, $this->getUser() ) ) {
 117                         $showdifflinks = false;
 118                 }
 119
 120                 $time = $this->getLanguage()->userTime( $cacheEntry->mAttribs['rc_timestamp'], $this->getUser() );
 121
 122                 $cacheEntry->watched = $watched;
 123                 $cacheEntry->link = $clink;
 124                 $cacheEntry->timestamp = $time;
 125                 $cacheEntry->numberofWatchingusers = $baseRC->numberofWatchingusers;
 126
 127                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 128                 # called too many times (50% of CPU time on RecentChanges!).
 129                 $thisOldid = $cacheEntry->mAttribs['rc_this_oldid'];
 130                 $lastOldid = $cacheEntry->mAttribs['rc_last_oldid'];
 131
 132                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 133                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid );
 134
 135                 if ( !$showdifflinks ) {
 136                         $curLink = $this->message['cur'];
 137                         $diffLink = $this->message['diff'];
 138                 } elseif ( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 139                         if ( $type != RC_NEW ) {
 140                                 $curLink = $this->message['cur'];
 141                         } else {
 142                                 $curUrl = htmlspecialchars( $cacheEntry->getTitle()->getLinkURL( $querycur ) );
 143                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 144                         }
 145                         $diffLink = $this->message['diff'];
 146                 } else {
 147                         $diffUrl = htmlspecialchars( $cacheEntry->getTitle()->getLinkURL( $querydiff ) );
 148                         $curUrl = htmlspecialchars( $cacheEntry->getTitle()->getLinkURL( $querycur ) );
 149                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 150                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 151                 }
 152
 153                 # Make "last" link
 154                 if ( !$showdifflinks || !$lastOldid ) {
 155                         $lastLink = $this->message['last'];
 156                 } elseif ( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 157                         $lastLink = $this->message['last'];
 158                 } else {
 159                         $lastLink = Linker::linkKnown( $cacheEntry->getTitle(), $this->message['last'],
 160                                 array(), $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid ) );
 161                 }
 162
 163                 # Make user links
 164                 if ( $this->isDeleted( $cacheEntry, Revision::DELETED_USER ) ) {
 165                         $cacheEntry->userlink = ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 166                 } else {
 167                         $cacheEntry->userlink = Linker::userLink(
 168                                 $cacheEntry->mAttribs['rc_user'],
 169                                 $cacheEntry->mAttribs['rc_user_text']
 170                         );
 171
 172                         $cacheEntry->usertalklink = Linker::userToolLinks(
 173                                 $cacheEntry->mAttribs['rc_user'],
 174                                 $cacheEntry->mAttribs['rc_user_text']
 175                         );
 176                 }
 177
 178                 $cacheEntry->lastlink = $lastLink;
 179                 $cacheEntry->curlink = $curLink;
 180                 $cacheEntry->difflink = $diffLink;
 181
 182                 # Put accumulated information into the cache, for later display
 183                 # Page moves go on their own line
 184                 $title = $cacheEntry->getTitle();
 185                 $secureName = $title->getPrefixedDBkey();
 186
 187                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 188                         # Use an @ character to prevent collision with page names
 189                         $this->rc_cache['@@' . ( $this->rcMoveIndex++ )] = array( $cacheEntry );
 190                 } else {
 191                         # Logs are grouped by type
 192                         if ( $type == RC_LOG ) {
 193                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 194                         }
 195                         if ( !isset( $this->rc_cache[$secureName] ) ) {
 196                                 $this->rc_cache[$secureName] = array();
 197                         }
 198
 199                         array_push( $this->rc_cache[$secureName], $cacheEntry );
 200                 }
 201
 202                 wfProfileOut( __METHOD__ );
 203
 204                 return $ret;
 205         }
 206
 207         /**
 208          * Enhanced RC group
 209          * @return string
 210          */
 211         protected function recentChangesBlockGroup( $block ) {
 212                 global $wgRCShowChangedSize;
 213
 214                 wfProfileIn( __METHOD__ );
 215
 216                 # Add the namespace and title of the block as part of the class
 217                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 218                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 219                         # Log entry
 220                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 221                                         . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 222                 } else {
 223                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 224                                         . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 225                 }
 226                 $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 227                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 228                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 229                         Html::openElement( 'tr' );
 230
 231                 # Collate list of users
 232                 $userlinks = array();
 233                 # Other properties
 234                 $unpatrolled = false;
 235                 $isnew = false;
 236                 $allBots = true;
 237                 $allMinors = true;
 238                 $curId = $currentRevision = 0;
 239                 # Some catalyst variables...
 240                 $namehidden = true;
 241                 $allLogs = true;
 242                 foreach ( $block as $rcObj ) {
 243                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 244                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 245                                 $isnew = true;
 246                         }
 247                         // If all log actions to this page were hidden, then don't
 248                         // give the name of the affected page for this block!
 249                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 250                                 $namehidden = false;
 251                         }
 252                         $u = $rcObj->userlink;
 253                         if ( !isset( $userlinks[$u] ) ) {
 254                                 $userlinks[$u] = 0;
 255                         }
 256                         if ( $rcObj->unpatrolled ) {
 257                                 $unpatrolled = true;
 258                         }
 259                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 260                                 $allLogs = false;
 261                         }
 262                         # Get the latest entry with a page_id and oldid
 263                         # since logs may not have these.
 264                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 265                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 266                         }
 267                         if ( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 268                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 269                         }
 270
 271                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 272                                 $allBots = false;
 273                         }
 274                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 275                                 $allMinors = false;
 276                         }
 277
 278                         $userlinks[$u]++;
 279                 }
 280
 281                 # Sort the list and convert to text
 282                 krsort( $userlinks );
 283                 asort( $userlinks );
 284                 $users = array();
 285                 foreach ( $userlinks as $userlink => $count ) {
 286                         $text = $userlink;
 287                         $text .= $this->getLanguage()->getDirMark();
 288                         if ( $count > 1 ) {
 289                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->formatNum( $count ) . '×' )->escaped();
 290                         }
 291                         array_push( $users, $text );
 292                 }
 293
 294                 $users = ' <span class="changedby">'
 295                         . $this->msg( 'brackets' )->rawParams(
 296                                 implode( $this->message['semicolon-separator'], $users )
 297                         )->escaped() . '</span>';
 298
 299                 $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
 300                 $r .= "<td>$tl</td>";
 301
 302                 # Main line
 303                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 304                         'newpage' => $isnew, # show, when one have this flag
 305                         'minor' => $allMinors, # show only, when all have this flag
 306                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 307                         'bot' => $allBots, # show only, when all have this flag
 308                 ) );
 309
 310                 # Timestamp
 311                 $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';
 312
 313                 # Article link
 314                 if ( $namehidden ) {
 315                         $r .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 316                 } elseif ( $allLogs ) {
 317                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 318                 } else {
 319                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 320                 }
 321
 322                 $r .= $this->getLanguage()->getDirMark();
 323
 324                 $queryParams['curid'] = $curId;
 325
 326                 # Changes message
 327                 static $nchanges = array();
 328                 static $sinceLastVisitMsg = array();
 329
 330                 $n = count( $block );
 331                 if ( !isset( $nchanges[$n] ) ) {
 332                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 333                 }
 334
 335                 $sinceLast = 0;
 336                 $unvisitedOldid = null;
 337                 foreach ( $block as $rcObj ) {
 338                         // Same logic as below inside main foreach
 339                         if ( $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched ) {
 340                                 $sinceLast++;
 341                                 $unvisitedOldid = $rcObj->mAttribs['rc_last_oldid'];
 342                         }
 343                 }
 344                 if ( !isset( $sinceLastVisitMsg[$sinceLast] ) ) {
 345                         $sinceLastVisitMsg[$sinceLast] =
 346                                 $this->msg( 'enhancedrc-since-last-visit' )->numParams( $sinceLast )->escaped();
 347                 }
 348
 349                 # Total change link
 350                 $r .= ' ';
 351                 $logtext = '';
 352                 if ( !$allLogs ) {
 353                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 354                                 $logtext .= $nchanges[$n];
 355                         } elseif ( $isnew ) {
 356                                 $logtext .= $nchanges[$n];
 357                         } else {
 358                                 $logtext .= Linker::link(
 359                                         $block[0]->getTitle(),
 360                                         $nchanges[$n],
 361                                         array(),
 362                                         $queryParams + array(
 363                                                 'diff' => $currentRevision,
 364                                                 'oldid' => $oldid,
 365                                         ),
 366                                         array( 'known', 'noclasses' )
 367                                 );
 368                                 if ( $sinceLast > 0 && $sinceLast < $n ) {
 369                                         $logtext .= $this->message['pipe-separator'] . Linker::link(
 370                                                 $block[0]->getTitle(),
 371                                                 $sinceLastVisitMsg[$sinceLast],
 372                                                 array(),
 373                                                 $queryParams + array(
 374                                                         'diff' => $currentRevision,
 375                                                         'oldid' => $unvisitedOldid,
 376                                                 ),
 377                                                 array( 'known', 'noclasses' )
 378                                         );
 379                                 }
 380                         }
 381                 }
 382
 383                 # History
 384                 if ( $allLogs ) {
 385                         // don't show history link for logs
 386                 } elseif ( $namehidden || !$block[0]->getTitle()->exists() ) {
 387                         $logtext .= $this->message['pipe-separator'] . $this->message['enhancedrc-history'];
 388                 } else {
 389                         $params = $queryParams;
 390                         $params['action'] = 'history';
 391
 392                         $logtext .= $this->message['pipe-separator'] .
 393                                 Linker::linkKnown(
 394                                         $block[0]->getTitle(),
 395                                         $this->message['enhancedrc-history'],
 396                                         array(),
 397                                         $params
 398                                 );
 399                 }
 400
 401                 if ( $logtext !== '' ) {
 402                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
 403                 }
 404
 405                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 406
 407                 # Character difference (does not apply if only log items)
 408                 if ( $wgRCShowChangedSize && !$allLogs ) {
 409                         $last = 0;
 410                         $first = count( $block ) - 1;
 411                         # Some events (like logs) have an "empty" size, so we need to skip those...
 412                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
 413                                 $last++;
 414                         }
 415                         while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
 416                                 $first--;
 417                         }
 418                         # Get net change
 419                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
 420
 421                         if ( $chardiff == '' ) {
 422                                 $r .= ' ';
 423                         } else {
 424                                 $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
 425                         }
 426                 }
 427
 428                 $r .= $users;
 429                 $r .= $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
 430
 431                 # Sub-entries
 432                 foreach ( $block as $rcObj ) {
 433                         # Classes to apply -- TODO implement
 434                         $classes = array();
 435                         $type = $rcObj->mAttribs['rc_type'];
 436
 437                         $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 438                                 ? ' class="mw-enhanced-watched"' : '';
 439
 440                         $r .= '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
 441                         $r .= $this->recentChangesFlags( array(
 442                                 'newpage' => $type == RC_NEW,
 443                                 'minor' => $rcObj->mAttribs['rc_minor'],
 444                                 'unpatrolled' => $rcObj->unpatrolled,
 445                                 'bot' => $rcObj->mAttribs['rc_bot'],
 446                         ) );
 447                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
 448
 449                         $params = $queryParams;
 450
 451                         if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
 452                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
 453                         }
 454
 455                         # Log timestamp
 456                         if ( $type == RC_LOG ) {
 457                                 $link = $rcObj->timestamp;
 458                         # Revision link
 459                         } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 460                                 $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
 461                         } else {
 462
 463                                 $link = Linker::linkKnown(
 464                                                 $rcObj->getTitle(),
 465                                                 $rcObj->timestamp,
 466                                                 array(),
 467                                                 $params
 468                                         );
 469                                 if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
 470                                         $link = '<span class="history-deleted">' . $link . '</span> ';
 471                                 }
 472                         }
 473                         $r .= $link . '</span>';
 474
 475                         if ( !$type == RC_LOG || $type == RC_NEW ) {
 476                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->curlink . $this->message['pipe-separator'] . $rcObj->lastlink )->escaped();
 477                         }
 478                         $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 479
 480                         # Character diff
 481                         if ( $wgRCShowChangedSize ) {
 482                                 $cd = $this->formatCharacterDifference( $rcObj );
 483                                 if ( $cd !== '' ) {
 484                                         $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
 485                                 }
 486                         }
 487
 488                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
 489                                 $r .= $this->insertLogEntry( $rcObj );
 490                         } else {
 491                                 # User links
 492                                 $r .= $rcObj->userlink;
 493                                 $r .= $rcObj->usertalklink;
 494                                 $r .= $this->insertComment( $rcObj );
 495                         }
 496
 497                         # Rollback
 498                         $this->insertRollback( $r, $rcObj );
 499                         # Tags
 500                         $this->insertTags( $r, $rcObj, $classes );
 501
 502                         $r .= "</td></tr>\n";
 503                 }
 504                 $r .= "</table>\n";
 505
 506                 $this->rcCacheIndex++;
 507
 508                 wfProfileOut( __METHOD__ );
 509
 510                 return $r;
 511         }
 512
 513         /**
 514          * Generate HTML for an arrow or placeholder graphic
 515          * @param string $dir one of '', 'd', 'l', 'r'
 516          * @param string $alt text
 517          * @param string $title text
 518          * @return String: HTML "<img>" tag
 519          */
 520         protected function arrow( $dir, $alt = '', $title = '' ) {
 521                 global $wgStylePath;
 522                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
 523                 $encAlt = htmlspecialchars( $alt );
 524                 $encTitle = htmlspecialchars( $title );
 525                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
 526         }
 527
 528         /**
 529          * Generate HTML for a right- or left-facing arrow,
 530          * depending on language direction.
 531          * @return String: HTML "<img>" tag
 532          */
 533         protected function sideArrow() {
 534                 $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
 535                 return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
 536         }
 537
 538         /**
 539          * Generate HTML for a down-facing arrow
 540          * depending on language direction.
 541          * @return String: HTML "<img>" tag
 542          */
 543         protected function downArrow() {
 544                 return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
 545         }
 546
 547         /**
 548          * Generate HTML for a spacer image
 549          * @return String: HTML "<img>" tag
 550          */
 551         protected function spacerArrow() {
 552                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
 553         }
 554
 555         /**
 556          * Enhanced RC ungrouped line.
 557          *
 558          * @param $rcObj RecentChange
 559          * @return String: a HTML formatted line (generated using $r)
 560          */
 561         protected function recentChangesBlockLine( $rcObj ) {
 562                 global $wgRCShowChangedSize;
 563
 564                 wfProfileIn( __METHOD__ );
 565                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
 566
 567                 $type = $rcObj->mAttribs['rc_type'];
 568                 $logType = $rcObj->mAttribs['rc_log_type'];
 569                 $classes = array( 'mw-enhanced-rc' );
 570                 if ( $logType ) {
 571                         # Log entry
 572                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 573                                         . $logType . '-' . $rcObj->mAttribs['rc_title'] );
 574                 } else {
 575                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
 576                                         $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
 577                 }
 578                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
 579                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 580                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 581                         Html::openElement( 'tr' );
 582
 583                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
 584                 # Flag and Timestamp
 585                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 586                         $r .= $this->recentChangesFlags( array() ); // no flags, but need the placeholders
 587                 } else {
 588                         $r .= $this->recentChangesFlags( array(
 589                                 'newpage' => $type == RC_NEW,
 590                                 'minor' => $rcObj->mAttribs['rc_minor'],
 591                                 'unpatrolled' => $rcObj->unpatrolled,
 592                                 'bot' => $rcObj->mAttribs['rc_bot'],
 593                         ) );
 594                 }
 595                 $r .= '&#160;' . $rcObj->timestamp . '&#160;</td><td>';
 596                 # Article or log link
 597                 if ( $logType ) {
 598                         $logPage = new LogPage( $logType );
 599                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
 600                         $logName = $logPage->getName()->escaped();
 601                         $r .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
 602                 } else {
 603                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
 604                 }
 605                 # Diff and hist links
 606                 if ( $type != RC_LOG ) {
 607                         $query['action'] = 'history';
 608                         $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
 609                                 $rcObj->getTitle(),
 610                                 $this->message['hist'],
 611                                 array(),
 612                                 $query
 613                         ) )->escaped();
 614                 }
 615                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
 616                 # Character diff
 617                 if ( $wgRCShowChangedSize ) {
 618                         $cd = $this->formatCharacterDifference( $rcObj );
 619                         if ( $cd !== '' ) {
 620                                 $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
 621                         }
 622                 }
 623
 624                 if ( $type == RC_LOG ) {
 625                         $r .= $this->insertLogEntry( $rcObj );
 626                 } else {
 627                         $r .= ' ' . $rcObj->userlink . $rcObj->usertalklink;
 628                         $r .= $this->insertComment( $rcObj );
 629                         $this->insertRollback( $r, $rcObj );
 630                 }
 631
 632                 # Tags
 633                 $this->insertTags( $r, $rcObj, $classes );
 634                 # Show how many people are watching this if enabled
 635                 $r .= $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
 636
 637                 $r .= "</td></tr></table>\n";
 638
 639                 wfProfileOut( __METHOD__ );
 640
 641                 return $r;
 642         }
 643
 644         /**
 645          * If enhanced RC is in use, this function takes the previously cached
 646          * RC lines, arranges them, and outputs the HTML
 647          *
 648          * @return string
 649          */
 650         protected function recentChangesBlock() {
 651                 if ( count ( $this->rc_cache ) == 0 ) {
 652                         return '';
 653                 }
 654
 655                 wfProfileIn( __METHOD__ );
 656
 657                 $blockOut = '';
 658                 foreach ( $this->rc_cache as $block ) {
 659                         if ( count( $block ) < 2 ) {
 660                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
 661                         } else {
 662                                 $blockOut .= $this->recentChangesBlockGroup( $block );
 663                         }
 664                 }
 665
 666                 wfProfileOut( __METHOD__ );
 667
 668                 return '<div>' . $blockOut . '</div>';
 669         }
 670
 671         /**
 672          * Returns text for the end of RC
 673          * If enhanced RC is in use, returns pretty much all the text
 674          * @return string
 675          */
 676         public function endRecentChangesList() {
 677                 return $this->recentChangesBlock() . parent::endRecentChangesList();
 678         }
 679
 680 }