includes/ChangesList.php

   1 <?php
   2 /**
   3  * Classes to show lists of changes.
   4  *
   5  * These can be:
   6  * - watchlist
   7  * - related changes
   8  * - recent changes
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  *
  25  * @file
  26  */
  27
  28 /**
  29  * @todo document
  30  */
  31 class RCCacheEntry extends RecentChange {
  32         var $secureName, $link;
  33         var $curlink, $difflink, $lastlink, $usertalklink, $versionlink;
  34         var $userlink, $timestamp, $watched;
  35
  36         /**
  37          * @param $rc RecentChange
  38          * @return RCCacheEntry
  39          */
  40         static function newFromParent( $rc ) {
  41                 $rc2 = new RCCacheEntry;
  42                 $rc2->mAttribs = $rc->mAttribs;
  43                 $rc2->mExtra = $rc->mExtra;
  44                 return $rc2;
  45         }
  46 }
  47
  48 /**
  49  * Base class for all changes lists
  50  */
  51 class ChangesList extends ContextSource {
  52
  53         /**
  54          * @var Skin
  55          */
  56         public $skin;
  57
  58         protected $watchlist = false;
  59
  60         protected $message;
  61
  62         /**
  63          * Changeslist constructor
  64          *
  65          * @param $obj Skin or IContextSource
  66          */
  67         public function __construct( $obj ) {
  68                 if ( $obj instanceof IContextSource ) {
  69                         $this->setContext( $obj );
  70                         $this->skin = $obj->getSkin();
  71                 } else {
  72                         $this->setContext( $obj->getContext() );
  73                         $this->skin = $obj;
  74                 }
  75                 $this->preCacheMessages();
  76         }
  77
  78         /**
  79          * Fetch an appropriate changes list class for the main context
  80          * This first argument used to be an User object.
  81          *
  82          * @deprecated in 1.18; use newFromContext() instead
  83          * @param string|User $unused Unused
  84          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  85          */
  86         public static function newFromUser( $unused ) {
  87                 wfDeprecated( __METHOD__, '1.18' );
  88                 return self::newFromContext( RequestContext::getMain() );
  89         }
  90
  91         /**
  92          * Fetch an appropriate changes list class for the specified context
  93          * Some users might want to use an enhanced list format, for instance
  94          *
  95          * @param $context IContextSource to use
  96          * @return ChangesList|EnhancedChangesList|OldChangesList derivative
  97          */
  98         public static function newFromContext( IContextSource $context ) {
  99                 $user = $context->getUser();
 100                 $sk = $context->getSkin();
 101                 $list = null;
 102                 if ( wfRunHooks( 'FetchChangesList', array( $user, &$sk, &$list ) ) ) {
 103                         $new = $context->getRequest()->getBool( 'enhanced', $user->getOption( 'usenewrc' ) );
 104                         return $new ? new EnhancedChangesList( $context ) : new OldChangesList( $context );
 105                 } else {
 106                         return $list;
 107                 }
 108         }
 109
 110         /**
 111          * Sets the list to use a "<li class='watchlist-(namespace)-(page)'>" tag
 112          * @param $value Boolean
 113          */
 114         public function setWatchlistDivs( $value = true ) {
 115                 $this->watchlist = $value;
 116         }
 117
 118         /**
 119          * As we use the same small set of messages in various methods and that
 120          * they are called often, we call them once and save them in $this->message
 121          */
 122         private function preCacheMessages() {
 123                 if ( !isset( $this->message ) ) {
 124                         foreach ( array(
 125                                 'cur', 'diff', 'hist', 'last', 'blocklink', 'history',
 126                                 'semicolon-separator', 'pipe-separator' ) as $msg
 127                         ) {
 128                                 $this->message[$msg] = $this->msg( $msg )->escaped();
 129                         }
 130                 }
 131         }
 132
 133         /**
 134          * Returns the appropriate flags for new page, minor change and patrolling
 135          * @param array $flags Associative array of 'flag' => Bool
 136          * @param string $nothing to use for empty space
 137          * @return String
 138          */
 139         public function recentChangesFlags( $flags, $nothing = '&#160;' ) {
 140                 global $wgRecentChangesFlags;
 141                 $f = '';
 142                 foreach ( array_keys( $wgRecentChangesFlags ) as $flag ) {
 143                         $f .= isset( $flags[$flag] ) && $flags[$flag]
 144                                 ? self::flag( $flag )
 145                                 : $nothing;
 146                 }
 147                 return $f;
 148         }
 149
 150         /**
 151          * Provide the "<abbr>" element appropriate to a given abbreviated flag,
 152          * namely the flag indicating a new page, a minor edit, a bot edit, or an
 153          * unpatrolled edit.  By default in English it will contain "N", "m", "b",
 154          * "!" respectively, plus it will have an appropriate title and class.
 155          *
 156          * @param string $flag One key of $wgRecentChangesFlags
 157          * @return String: Raw HTML
 158          */
 159         public static function flag( $flag ) {
 160                 static $flagInfos = null;
 161                 if ( is_null( $flagInfos ) ) {
 162                         global $wgRecentChangesFlags;
 163                         $flagInfos = array();
 164                         foreach ( $wgRecentChangesFlags as $key => $value ) {
 165                                 $flagInfos[$key]['letter'] = wfMessage( $value['letter'] )->escaped();
 166                                 $flagInfos[$key]['title'] = wfMessage( $value['title'] )->escaped();
 167                                 // Allow customized class name, fall back to flag name
 168                                 $flagInfos[$key]['class'] = Sanitizer::escapeClass(
 169                                         isset( $value['class'] ) ? $value['class'] : $key );
 170                         }
 171                 }
 172
 173                 // Inconsistent naming, bleh, kepted for b/c
 174                 $map = array(
 175                         'minoredit' => 'minor',
 176                         'botedit' => 'bot',
 177                 );
 178                 if ( isset( $map[$flag] ) ) {
 179                         $flag = $map[$flag];
 180                 }
 181
 182                 return "<abbr class='" . $flagInfos[$flag]['class'] . "' title='" . $flagInfos[$flag]['title'] . "'>" .
 183                         $flagInfos[$flag]['letter'] .
 184                         '</abbr>';
 185         }
 186
 187         /**
 188          * Returns text for the start of the tabular part of RC
 189          * @return String
 190          */
 191         public function beginRecentChangesList() {
 192                 $this->rc_cache = array();
 193                 $this->rcMoveIndex = 0;
 194                 $this->rcCacheIndex = 0;
 195                 $this->lastdate = '';
 196                 $this->rclistOpen = false;
 197                 $this->getOutput()->addModuleStyles( 'mediawiki.special.changeslist' );
 198                 return '';
 199         }
 200
 201         /**
 202          * Show formatted char difference
 203          * @param $old Integer: bytes
 204          * @param $new Integer: bytes
 205          * @param $context IContextSource context to use
 206          * @return String
 207          */
 208         public static function showCharacterDifference( $old, $new, IContextSource $context = null ) {
 209                 global $wgRCChangedSizeThreshold, $wgMiserMode;
 210
 211                 if ( !$context ) {
 212                         $context = RequestContext::getMain();
 213                 }
 214
 215                 $new = (int)$new;
 216                 $old = (int)$old;
 217                 $szdiff = $new - $old;
 218
 219                 $lang = $context->getLanguage();
 220                 $code = $lang->getCode();
 221                 static $fastCharDiff = array();
 222                 if ( !isset( $fastCharDiff[$code] ) ) {
 223                         $fastCharDiff[$code] = $wgMiserMode || $context->msg( 'rc-change-size' )->plain() === '$1';
 224                 }
 225
 226                 $formattedSize = $lang->formatNum( $szdiff );
 227
 228                 if ( !$fastCharDiff[$code] ) {
 229                         $formattedSize = $context->msg( 'rc-change-size', $formattedSize )->text();
 230                 }
 231
 232                 if ( abs( $szdiff ) > abs( $wgRCChangedSizeThreshold ) ) {
 233                         $tag = 'strong';
 234                 } else {
 235                         $tag = 'span';
 236                 }
 237
 238                 if ( $szdiff === 0 ) {
 239                         $formattedSizeClass = 'mw-plusminus-null';
 240                 }
 241                 if ( $szdiff > 0 ) {
 242                         $formattedSize = '+' . $formattedSize;
 243                         $formattedSizeClass = 'mw-plusminus-pos';
 244                 }
 245                 if ( $szdiff < 0 ) {
 246                         $formattedSizeClass = 'mw-plusminus-neg';
 247                 }
 248
 249                 $formattedTotalSize = $context->msg( 'rc-change-size-new' )->numParams( $new )->text();
 250
 251                 return Html::element( $tag,
 252                         array( 'dir' => 'ltr', 'class' => $formattedSizeClass, 'title' => $formattedTotalSize ),
 253                         $context->msg( 'parentheses', $formattedSize )->plain() ) . $lang->getDirMark();
 254         }
 255
 256         /**
 257          * Format the character difference of one or several changes.
 258          *
 259          * @param $old RecentChange
 260          * @param $new RecentChange last change to use, if not provided, $old will be used
 261          * @return string HTML fragment
 262          */
 263         public function formatCharacterDifference( RecentChange $old, RecentChange $new = null ) {
 264                 $oldlen = $old->mAttribs['rc_old_len'];
 265
 266                 if ( $new ) {
 267                         $newlen = $new->mAttribs['rc_new_len'];
 268                 } else {
 269                         $newlen = $old->mAttribs['rc_new_len'];
 270                 }
 271
 272                 if ( $oldlen === null || $newlen === null ) {
 273                         return '';
 274                 }
 275
 276                 return self::showCharacterDifference( $oldlen, $newlen, $this->getContext() );
 277         }
 278
 279         /**
 280          * Returns text for the end of RC
 281          * @return String
 282          */
 283         public function endRecentChangesList() {
 284                 if ( $this->rclistOpen ) {
 285                         return "</ul>\n";
 286                 } else {
 287                         return '';
 288                 }
 289         }
 290
 291         /**
 292          * @param string $s HTML to update
 293          * @param $rc_timestamp mixed
 294          */
 295         public function insertDateHeader( &$s, $rc_timestamp ) {
 296                 # Make date header if necessary
 297                 $date = $this->getLanguage()->userDate( $rc_timestamp, $this->getUser() );
 298                 if ( $date != $this->lastdate ) {
 299                         if ( $this->lastdate != '' ) {
 300                                 $s .= "</ul>\n";
 301                         }
 302                         $s .= Xml::element( 'h4', null, $date ) . "\n<ul class=\"special\">";
 303                         $this->lastdate = $date;
 304                         $this->rclistOpen = true;
 305                 }
 306         }
 307
 308         /**
 309          * @param string $s HTML to update
 310          * @param $title Title
 311          * @param $logtype string
 312          */
 313         public function insertLog( &$s, $title, $logtype ) {
 314                 $page = new LogPage( $logtype );
 315                 $logname = $page->getName()->escaped();
 316                 $s .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $title, $logname ) )->escaped();
 317         }
 318
 319         /**
 320          * @param string $s HTML to update
 321          * @param $rc RecentChange
 322          * @param $unpatrolled
 323          */
 324         public function insertDiffHist( &$s, &$rc, $unpatrolled ) {
 325                 # Diff link
 326                 if ( $rc->mAttribs['rc_type'] == RC_NEW || $rc->mAttribs['rc_type'] == RC_LOG ) {
 327                         $diffLink = $this->message['diff'];
 328                 } elseif ( !self::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 329                         $diffLink = $this->message['diff'];
 330                 } else {
 331                         $query = array(
 332                                 'curid' => $rc->mAttribs['rc_cur_id'],
 333                                 'diff' => $rc->mAttribs['rc_this_oldid'],
 334                                 'oldid' => $rc->mAttribs['rc_last_oldid']
 335                         );
 336
 337                         $diffLink = Linker::linkKnown(
 338                                 $rc->getTitle(),
 339                                 $this->message['diff'],
 340                                 array( 'tabindex' => $rc->counter ),
 341                                 $query
 342                         );
 343                 }
 344                 $diffhist = $diffLink . $this->message['pipe-separator'];
 345                 # History link
 346                 $diffhist .= Linker::linkKnown(
 347                         $rc->getTitle(),
 348                         $this->message['hist'],
 349                         array(),
 350                         array(
 351                                 'curid' => $rc->mAttribs['rc_cur_id'],
 352                                 'action' => 'history'
 353                         )
 354                 );
 355                 $s .= $this->msg( 'parentheses' )->rawParams( $diffhist )->escaped() . ' <span class="mw-changeslist-separator">. .</span> ';
 356         }
 357
 358         /**
 359          * @param string $s HTML to update
 360          * @param $rc RecentChange
 361          * @param $unpatrolled
 362          * @param $watched
 363          */
 364         public function insertArticleLink( &$s, &$rc, $unpatrolled, $watched ) {
 365                 global $wgUseRCPatrol;
 366
 367                 $params = array();
 368
 369                 $articlelink = Linker::linkKnown(
 370                         $rc->getTitle(),
 371                         null,
 372                         array( 'class' => 'mw-changeslist-title' ),
 373                         $params
 374                 );
 375                 if ( $this->isDeleted( $rc, Revision::DELETED_TEXT ) ) {
 376                         $articlelink = '<span class="history-deleted">' . $articlelink . '</span>';
 377                 }
 378                 # To allow for boldening pages watched by this user
 379                 $articlelink = "<span class=\"mw-title\">{$articlelink}</span>";
 380                 # RTL/LTR marker
 381                 $articlelink .= $this->getLanguage()->getDirMark();
 382
 383                 wfRunHooks( 'ChangesListInsertArticleLink',
 384                         array( &$this, &$articlelink, &$s, &$rc, $unpatrolled, $watched ) );
 385
 386                 $s .= " $articlelink";
 387         }
 388
 389         /**
 390          * Get the timestamp from $rc formatted with current user's settings
 391          * and a separator
 392          *
 393          * @param $rc RecentChange
 394          * @return string HTML fragment
 395          */
 396         public function getTimestamp( $rc ) {
 397                 return $this->message['semicolon-separator'] . '<span class="mw-changeslist-date">' .
 398                         $this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() ) . '</span> <span class="mw-changeslist-separator">. .</span> ';
 399         }
 400
 401         /**
 402          * Insert time timestamp string from $rc into $s
 403          *
 404          * @param string $s HTML to update
 405          * @param $rc RecentChange
 406          */
 407         public function insertTimestamp( &$s, $rc ) {
 408                 $s .= $this->getTimestamp( $rc );
 409         }
 410
 411         /**
 412          * Insert links to user page, user talk page and eventually a blocking link
 413          *
 414          * @param &$s String HTML to update
 415          * @param &$rc RecentChange
 416          */
 417         public function insertUserRelatedLinks( &$s, &$rc ) {
 418                 if ( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 419                         $s .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 420                 } else {
 421                         $s .= $this->getLanguage()->getDirMark() . Linker::userLink( $rc->mAttribs['rc_user'],
 422                                 $rc->mAttribs['rc_user_text'] );
 423                         $s .= Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 424                 }
 425         }
 426
 427         /**
 428          * Insert a formatted action
 429          *
 430          * @param $rc RecentChange
 431          * @return string
 432          */
 433         public function insertLogEntry( $rc ) {
 434                 $formatter = LogFormatter::newFromRow( $rc->mAttribs );
 435                 $formatter->setContext( $this->getContext() );
 436                 $formatter->setShowUserToolLinks( true );
 437                 $mark = $this->getLanguage()->getDirMark();
 438                 return $formatter->getActionText() . " $mark" . $formatter->getComment();
 439         }
 440
 441         /**
 442          * Insert a formatted comment
 443          * @param $rc RecentChange
 444          * @return string
 445          */
 446         public function insertComment( $rc ) {
 447                 if ( $rc->mAttribs['rc_type'] != RC_MOVE && $rc->mAttribs['rc_type'] != RC_MOVE_OVER_REDIRECT ) {
 448                         if ( $this->isDeleted( $rc, Revision::DELETED_COMMENT ) ) {
 449                                 return ' <span class="history-deleted">' . $this->msg( 'rev-deleted-comment' )->escaped() . '</span>';
 450                         } else {
 451                                 return Linker::commentBlock( $rc->mAttribs['rc_comment'], $rc->getTitle() );
 452                         }
 453                 }
 454                 return '';
 455         }
 456
 457         /**
 458          * Check whether to enable recent changes patrol features
 459          *
 460          * @deprecated since 1.22
 461          * @return Boolean
 462          */
 463         public static function usePatrol() {
 464                 global $wgUser;
 465
 466                 wfDeprecated( __METHOD__, '1.22' );
 467
 468                 return $wgUser->useRCPatrol();
 469         }
 470
 471         /**
 472          * Returns the string which indicates the number of watching users
 473          * @return string
 474          */
 475         protected function numberofWatchingusers( $count ) {
 476                 static $cache = array();
 477                 if ( $count > 0 ) {
 478                         if ( !isset( $cache[$count] ) ) {
 479                                 $cache[$count] = $this->msg( 'number_of_watching_users_RCview' )->numParams( $count )->escaped();
 480                         }
 481                         return $cache[$count];
 482                 } else {
 483                         return '';
 484                 }
 485         }
 486
 487         /**
 488          * Determine if said field of a revision is hidden
 489          * @param $rc RCCacheEntry
 490          * @param $field Integer: one of DELETED_* bitfield constants
 491          * @return Boolean
 492          */
 493         public static function isDeleted( $rc, $field ) {
 494                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 495         }
 496
 497         /**
 498          * Determine if the current user is allowed to view a particular
 499          * field of this revision, if it's marked as deleted.
 500          * @param $rc RCCacheEntry
 501          * @param $field Integer
 502          * @param $user User object to check, or null to use $wgUser
 503          * @return Boolean
 504          */
 505         public static function userCan( $rc, $field, User $user = null ) {
 506                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 507                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 508                 } else {
 509                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 510                 }
 511         }
 512
 513         /**
 514          * @param $link string
 515          * @param $watched bool
 516          * @return string
 517          */
 518         protected function maybeWatchedLink( $link, $watched = false ) {
 519                 if ( $watched ) {
 520                         return '<strong class="mw-watched">' . $link . '</strong>';
 521                 } else {
 522                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 523                 }
 524         }
 525
 526         /** Inserts a rollback link
 527          *
 528          * @param $s string
 529          * @param $rc RecentChange
 530          */
 531         public function insertRollback( &$s, &$rc ) {
 532                 if ( $rc->mAttribs['rc_type'] == RC_EDIT && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 533                         $page = $rc->getTitle();
 534                         /** Check for rollback and edit permissions, disallow special pages, and only
 535                           * show a link on the top-most revision */
 536                         if ( $this->getUser()->isAllowed( 'rollback' ) && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 537                         {
 538                                 $rev = new Revision( array(
 539                                         'title' => $page,
 540                                         'id' => $rc->mAttribs['rc_this_oldid'],
 541                                         'user' => $rc->mAttribs['rc_user'],
 542                                         'user_text' => $rc->mAttribs['rc_user_text'],
 543                                         'deleted' => $rc->mAttribs['rc_deleted']
 544                                 ) );
 545                                 $s .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
 546                         }
 547                 }
 548         }
 549
 550         /**
 551          * @param $s string
 552          * @param $rc RecentChange
 553          * @param $classes
 554          */
 555         public function insertTags( &$s, &$rc, &$classes ) {
 556                 if ( empty( $rc->mAttribs['ts_tags'] ) ) {
 557                         return;
 558                 }
 559
 560                 list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 561                 $classes = array_merge( $classes, $newClasses );
 562                 $s .= ' ' . $tagSummary;
 563         }
 564
 565         public function insertExtra( &$s, &$rc, &$classes ) {
 566                 // Empty, used for subclasses to add anything special.
 567         }
 568
 569         protected function showAsUnpatrolled( RecentChange $rc ) {
 570                 $unpatrolled = false;
 571                 if ( !$rc->mAttribs['rc_patrolled'] ) {
 572                         if ( $this->getUser()->useRCPatrol() ) {
 573                                 $unpatrolled = true;
 574                         } elseif ( $this->getUser()->useNPPatrol() && $rc->mAttribs['rc_type'] == RC_NEW ) {
 575                                 $unpatrolled = true;
 576                         }
 577                 }
 578                 return $unpatrolled;
 579         }
 580 }
 581
 582 /**
 583  * Generate a list of changes using the good old system (no javascript)
 584  */
 585 class OldChangesList extends ChangesList {
 586         /**
 587          * Format a line using the old system (aka without any javascript).
 588          *
 589          * @param $rc RecentChange, passed by reference
 590          * @param bool $watched (default false)
 591          * @param int $linenumber (default null)
 592          *
 593          * @return string|bool
 594          */
 595         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 596                 global $wgRCShowChangedSize;
 597                 wfProfileIn( __METHOD__ );
 598
 599                 # Should patrol-related stuff be shown?
 600                 $unpatrolled = $this->showAsUnpatrolled( $rc );
 601
 602                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 603                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 604
 605                 $s = '';
 606                 $classes = array();
 607                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 608                 if ( $linenumber ) {
 609                         if ( $linenumber & 1 ) {
 610                                 $classes[] = 'mw-line-odd';
 611                         } else {
 612                                 $classes[] = 'mw-line-even';
 613                         }
 614                 }
 615
 616                 // Indicate watched status on the line to allow for more
 617                 // comprehensive styling.
 618                 $classes[] = $watched && $rc->mAttribs['rc_timestamp'] >= $watched
 619                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 620
 621                 // Moved pages (very very old, not supported anymore)
 622                 if ( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 623                 // Log entries
 624                 } elseif ( $rc->mAttribs['rc_log_type'] ) {
 625                         $logtitle = SpecialPage::getTitleFor( 'Log', $rc->mAttribs['rc_log_type'] );
 626                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 627                 // Log entries (old format) or log targets, and special pages
 628                 } elseif ( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 629                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 630                         if ( $name == 'Log' ) {
 631                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 632                         }
 633                 // Regular entries
 634                 } else {
 635                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 636                         # M, N, b and ! (minor, new, bot and unpatrolled)
 637                         $s .= $this->recentChangesFlags(
 638                                 array(
 639                                         'newpage' => $rc->mAttribs['rc_type'] == RC_NEW,
 640                                         'minor' => $rc->mAttribs['rc_minor'],
 641                                         'unpatrolled' => $unpatrolled,
 642                                         'bot' => $rc->mAttribs['rc_bot']
 643                                 ),
 644                                 ''
 645                         );
 646                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 647                 }
 648                 # Edit/log timestamp
 649                 $this->insertTimestamp( $s, $rc );
 650                 # Bytes added or removed
 651                 if ( $wgRCShowChangedSize ) {
 652                         $cd = $this->formatCharacterDifference( $rc );
 653                         if ( $cd !== '' ) {
 654                                 $s .= $cd . '  <span class="mw-changeslist-separator">. .</span> ';
 655                         }
 656                 }
 657
 658                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 659                         $s .= $this->insertLogEntry( $rc );
 660                 } else {
 661                         # User tool links
 662                         $this->insertUserRelatedLinks( $s, $rc );
 663                         # LTR/RTL direction mark
 664                         $s .= $this->getLanguage()->getDirMark();
 665                         $s .= $this->insertComment( $rc );
 666                 }
 667
 668                 # Tags
 669                 $this->insertTags( $s, $rc, $classes );
 670                 # Rollback
 671                 $this->insertRollback( $s, $rc );
 672                 # For subclasses
 673                 $this->insertExtra( $s, $rc, $classes );
 674
 675                 # How many users watch this page
 676                 if ( $rc->numberofWatchingusers > 0 ) {
 677                         $s .= ' ' . $this->numberofWatchingusers( $rc->numberofWatchingusers );
 678                 }
 679
 680                 if ( $this->watchlist ) {
 681                         $classes[] = Sanitizer::escapeClass( 'watchlist-' . $rc->mAttribs['rc_namespace'] . '-' . $rc->mAttribs['rc_title'] );
 682                 }
 683
 684                 if ( !wfRunHooks( 'OldChangesListRecentChangesLine', array( &$this, &$s, $rc, &$classes ) ) ) {
 685                         wfProfileOut( __METHOD__ );
 686                         return false;
 687                 }
 688
 689                 wfProfileOut( __METHOD__ );
 690                 return "$dateheader<li class=\"" . implode( ' ', $classes ) . "\">" . $s . "</li>\n";
 691         }
 692 }
 693
 694 /**
 695  * Generate a list of changes using an Enhanced system (uses javascript).
 696  */
 697 class EnhancedChangesList extends ChangesList {
 698
 699         protected $rc_cache;
 700
 701         /**
 702          * Add the JavaScript file for enhanced changeslist
 703          * @return String
 704          */
 705         public function beginRecentChangesList() {
 706                 $this->rc_cache = array();
 707                 $this->rcMoveIndex = 0;
 708                 $this->rcCacheIndex = 0;
 709                 $this->lastdate = '';
 710                 $this->rclistOpen = false;
 711                 $this->getOutput()->addModuleStyles( array(
 712                         'mediawiki.special.changeslist',
 713                         'mediawiki.special.changeslist.enhanced',
 714                 ) );
 715                 $this->getOutput()->addModules( array(
 716                         'jquery.makeCollapsible',
 717                         'mediawiki.icon',
 718                 ) );
 719                 return '';
 720         }
 721         /**
 722          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 723          *
 724          * @param $baseRC RecentChange
 725          * @param $watched bool
 726          *
 727          * @return string
 728          */
 729         public function recentChangesLine( &$baseRC, $watched = false ) {
 730                 wfProfileIn( __METHOD__ );
 731
 732                 # Create a specialised object
 733                 $rc = RCCacheEntry::newFromParent( $baseRC );
 734
 735                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 736
 737                 # If it's a new day, add the headline and flush the cache
 738                 $date = $this->getLanguage()->userDate( $rc->mAttribs['rc_timestamp'], $this->getUser() );
 739                 $ret = '';
 740                 if ( $date != $this->lastdate ) {
 741                         # Process current cache
 742                         $ret = $this->recentChangesBlock();
 743                         $this->rc_cache = array();
 744                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 745                         $this->lastdate = $date;
 746                 }
 747
 748                 # Should patrol-related stuff be shown?
 749                 $rc->unpatrolled = $this->showAsUnpatrolled( $rc );
 750
 751                 $showdifflinks = true;
 752                 # Make article link
 753                 $type = $rc->mAttribs['rc_type'];
 754                 $logType = $rc->mAttribs['rc_log_type'];
 755                 // Page moves, very old style, not supported anymore
 756                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 757                 // New unpatrolled pages
 758                 } elseif ( $rc->unpatrolled && $type == RC_NEW ) {
 759                         $clink = Linker::linkKnown( $rc->getTitle() );
 760                 // Log entries
 761                 } elseif ( $type == RC_LOG ) {
 762                         if ( $logType ) {
 763                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 764                                 $logpage = new LogPage( $logType );
 765                                 $logname = $logpage->getName()->escaped();
 766                                 $clink = $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logtitle, $logname ) )->escaped();
 767                         } else {
 768                                 $clink = Linker::link( $rc->getTitle() );
 769                         }
 770                         $watched = false;
 771                 // Log entries (old format) and special pages
 772                 } elseif ( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 773                         wfDebug( "Unexpected special page in recentchanges\n" );
 774                         $clink = '';
 775                 // Edits
 776                 } else {
 777                         $clink = Linker::linkKnown( $rc->getTitle() );
 778                 }
 779
 780                 # Don't show unusable diff links
 781                 if ( !ChangesList::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 782                         $showdifflinks = false;
 783                 }
 784
 785                 $time = $this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() );
 786                 $rc->watched = $watched;
 787                 $rc->link = $clink;
 788                 $rc->timestamp = $time;
 789                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 790
 791                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 792                 # called too many times (50% of CPU time on RecentChanges!).
 793                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 794                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 795
 796                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 797                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid );
 798
 799                 if ( !$showdifflinks ) {
 800                         $curLink = $this->message['cur'];
 801                         $diffLink = $this->message['diff'];
 802                 } elseif ( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 803                         if ( $type != RC_NEW ) {
 804                                 $curLink = $this->message['cur'];
 805                         } else {
 806                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 807                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 808                         }
 809                         $diffLink = $this->message['diff'];
 810                 } else {
 811                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querydiff ) );
 812                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 813                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 814                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 815                 }
 816
 817                 # Make "last" link
 818                 if ( !$showdifflinks || !$lastOldid ) {
 819                         $lastLink = $this->message['last'];
 820                 } elseif ( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 821                         $lastLink = $this->message['last'];
 822                 } else {
 823                         $lastLink = Linker::linkKnown( $rc->getTitle(), $this->message['last'],
 824                                 array(), $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid ) );
 825                 }
 826
 827                 # Make user links
 828                 if ( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 829                         $rc->userlink = ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 830                 } else {
 831                         $rc->userlink = Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 832                         $rc->usertalklink = Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 833                 }
 834
 835                 $rc->lastlink = $lastLink;
 836                 $rc->curlink = $curLink;
 837                 $rc->difflink = $diffLink;
 838
 839                 # Put accumulated information into the cache, for later display
 840                 # Page moves go on their own line
 841                 $title = $rc->getTitle();
 842                 $secureName = $title->getPrefixedDBkey();
 843                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 844                         # Use an @ character to prevent collision with page names
 845                         $this->rc_cache['@@' . ( $this->rcMoveIndex++ )] = array( $rc );
 846                 } else {
 847                         # Logs are grouped by type
 848                         if ( $type == RC_LOG ) {
 849                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 850                         }
 851                         if ( !isset( $this->rc_cache[$secureName] ) ) {
 852                                 $this->rc_cache[$secureName] = array();
 853                         }
 854
 855                         array_push( $this->rc_cache[$secureName], $rc );
 856                 }
 857
 858                 wfProfileOut( __METHOD__ );
 859
 860                 return $ret;
 861         }
 862
 863         /**
 864          * Enhanced RC group
 865          * @return string
 866          */
 867         protected function recentChangesBlockGroup( $block ) {
 868                 global $wgRCShowChangedSize;
 869
 870                 wfProfileIn( __METHOD__ );
 871
 872                 # Add the namespace and title of the block as part of the class
 873                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 874                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 875                         # Log entry
 876                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 877                                         . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 878                 } else {
 879                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 880                                         . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 881                 }
 882                 $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 883                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 884                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 885                         Html::openElement( 'tr' );
 886
 887                 # Collate list of users
 888                 $userlinks = array();
 889                 # Other properties
 890                 $unpatrolled = false;
 891                 $isnew = false;
 892                 $allBots = true;
 893                 $allMinors = true;
 894                 $curId = $currentRevision = 0;
 895                 # Some catalyst variables...
 896                 $namehidden = true;
 897                 $allLogs = true;
 898                 foreach ( $block as $rcObj ) {
 899                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 900                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 901                                 $isnew = true;
 902                         }
 903                         // If all log actions to this page were hidden, then don't
 904                         // give the name of the affected page for this block!
 905                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 906                                 $namehidden = false;
 907                         }
 908                         $u = $rcObj->userlink;
 909                         if ( !isset( $userlinks[$u] ) ) {
 910                                 $userlinks[$u] = 0;
 911                         }
 912                         if ( $rcObj->unpatrolled ) {
 913                                 $unpatrolled = true;
 914                         }
 915                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 916                                 $allLogs = false;
 917                         }
 918                         # Get the latest entry with a page_id and oldid
 919                         # since logs may not have these.
 920                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 921                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 922                         }
 923                         if ( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 924                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 925                         }
 926
 927                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 928                                 $allBots = false;
 929                         }
 930                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 931                                 $allMinors = false;
 932                         }
 933
 934                         $userlinks[$u]++;
 935                 }
 936
 937                 # Sort the list and convert to text
 938                 krsort( $userlinks );
 939                 asort( $userlinks );
 940                 $users = array();
 941                 foreach ( $userlinks as $userlink => $count ) {
 942                         $text = $userlink;
 943                         $text .= $this->getLanguage()->getDirMark();
 944                         if ( $count > 1 ) {
 945                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->formatNum( $count ) . '×' )->escaped();
 946                         }
 947                         array_push( $users, $text );
 948                 }
 949
 950                 $users = ' <span class="changedby">'
 951                         . $this->msg( 'brackets' )->rawParams(
 952                                 implode( $this->message['semicolon-separator'], $users )
 953                         )->escaped() . '</span>';
 954
 955                 $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
 956                 $r .= "<td>$tl</td>";
 957
 958                 # Main line
 959                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 960                         'newpage' => $isnew, # show, when one have this flag
 961                         'minor' => $allMinors, # show only, when all have this flag
 962                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 963                         'bot' => $allBots, # show only, when all have this flag
 964                 ) );
 965
 966                 # Timestamp
 967                 $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';
 968
 969                 # Article link
 970                 if ( $namehidden ) {
 971                         $r .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 972                 } elseif ( $allLogs ) {
 973                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 974                 } else {
 975                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 976                 }
 977
 978                 $r .= $this->getLanguage()->getDirMark();
 979
 980                 $queryParams['curid'] = $curId;
 981                 # Changes message
 982                 $n = count( $block );
 983                 static $nchanges = array();
 984                 if ( !isset( $nchanges[$n] ) ) {
 985                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 986                 }
 987                 # Total change link
 988                 $r .= ' ';
 989                 $logtext = '';
 990                 if ( !$allLogs ) {
 991                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 992                                 $logtext .= $nchanges[$n];
 993                         } elseif ( $isnew ) {
 994                                 $logtext .= $nchanges[$n];
 995                         } else {
 996                                 $params = $queryParams;
 997                                 $params['diff'] = $currentRevision;
 998                                 $params['oldid'] = $oldid;
 999
1000                                 $logtext .= Linker::link(
1001                                         $block[0]->getTitle(),
1002                                         $nchanges[$n],
1003                                         array(),
1004                                         $params,
1005                                         array( 'known', 'noclasses' )
1006                                 );
1007                         }
1008                 }
1009
1010                 # History
1011                 if ( $allLogs ) {
1012                         // don't show history link for logs
1013                 } elseif ( $namehidden || !$block[0]->getTitle()->exists() ) {
1014                         $logtext .= $this->message['pipe-separator'] . $this->message['hist'];
1015                 } else {
1016                         $params = $queryParams;
1017                         $params['action'] = 'history';
1018
1019                         $logtext .= $this->message['pipe-separator'] .
1020                                 Linker::linkKnown(
1021                                         $block[0]->getTitle(),
1022                                         $this->message['hist'],
1023                                         array(),
1024                                         $params
1025                                 );
1026                 }
1027
1028                 if ( $logtext !== '' ) {
1029                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
1030                 }
1031
1032                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1033
1034                 # Character difference (does not apply if only log items)
1035                 if ( $wgRCShowChangedSize && !$allLogs ) {
1036                         $last = 0;
1037                         $first = count( $block ) - 1;
1038                         # Some events (like logs) have an "empty" size, so we need to skip those...
1039                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
1040                                 $last++;
1041                         }
1042                         while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
1043                                 $first--;
1044                         }
1045                         # Get net change
1046                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
1047
1048                         if ( $chardiff == '' ) {
1049                                 $r .= ' ';
1050                         } else {
1051                                 $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
1052                         }
1053                 }
1054
1055                 $r .= $users;
1056                 $r .= $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
1057
1058                 # Sub-entries
1059                 foreach ( $block as $rcObj ) {
1060                         # Classes to apply -- TODO implement
1061                         $classes = array();
1062                         $type = $rcObj->mAttribs['rc_type'];
1063
1064                         $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
1065                                 ? ' class="mw-enhanced-watched"' : '';
1066
1067                         $r .= '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
1068                         $r .= $this->recentChangesFlags( array(
1069                                 'newpage' => $type == RC_NEW,
1070                                 'minor' => $rcObj->mAttribs['rc_minor'],
1071                                 'unpatrolled' => $rcObj->unpatrolled,
1072                                 'bot' => $rcObj->mAttribs['rc_bot'],
1073                         ) );
1074                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
1075
1076                         $params = $queryParams;
1077
1078                         if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
1079                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
1080                         }
1081
1082                         # Log timestamp
1083                         if ( $type == RC_LOG ) {
1084                                 $link = $rcObj->timestamp;
1085                         # Revision link
1086                         } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
1087                                 $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
1088                         } else {
1089
1090                                 $link = Linker::linkKnown(
1091                                                 $rcObj->getTitle(),
1092                                                 $rcObj->timestamp,
1093                                                 array(),
1094                                                 $params
1095                                         );
1096                                 if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
1097                                         $link = '<span class="history-deleted">' . $link . '</span> ';
1098                                 }
1099                         }
1100                         $r .= $link . '</span>';
1101
1102                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1103                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->curlink . $this->message['pipe-separator'] . $rcObj->lastlink )->escaped();
1104                         }
1105                         $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1106
1107                         # Character diff
1108                         if ( $wgRCShowChangedSize ) {
1109                                 $cd = $this->formatCharacterDifference( $rcObj );
1110                                 if ( $cd !== '' ) {
1111                                         $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
1112                                 }
1113                         }
1114
1115                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
1116                                 $r .= $this->insertLogEntry( $rcObj );
1117                         } else {
1118                                 # User links
1119                                 $r .= $rcObj->userlink;
1120                                 $r .= $rcObj->usertalklink;
1121                                 $r .= $this->insertComment( $rcObj );
1122                         }
1123
1124                         # Rollback
1125                         $this->insertRollback( $r, $rcObj );
1126                         # Tags
1127                         $this->insertTags( $r, $rcObj, $classes );
1128
1129                         $r .= "</td></tr>\n";
1130                 }
1131                 $r .= "</table>\n";
1132
1133                 $this->rcCacheIndex++;
1134
1135                 wfProfileOut( __METHOD__ );
1136
1137                 return $r;
1138         }
1139
1140         /**
1141          * Generate HTML for an arrow or placeholder graphic
1142          * @param string $dir one of '', 'd', 'l', 'r'
1143          * @param string $alt text
1144          * @param string $title text
1145          * @return String: HTML "<img>" tag
1146          */
1147         protected function arrow( $dir, $alt = '', $title = '' ) {
1148                 global $wgStylePath;
1149                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1150                 $encAlt = htmlspecialchars( $alt );
1151                 $encTitle = htmlspecialchars( $title );
1152                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1153         }
1154
1155         /**
1156          * Generate HTML for a right- or left-facing arrow,
1157          * depending on language direction.
1158          * @return String: HTML "<img>" tag
1159          */
1160         protected function sideArrow() {
1161                 $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
1162                 return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
1163         }
1164
1165         /**
1166          * Generate HTML for a down-facing arrow
1167          * depending on language direction.
1168          * @return String: HTML "<img>" tag
1169          */
1170         protected function downArrow() {
1171                 return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
1172         }
1173
1174         /**
1175          * Generate HTML for a spacer image
1176          * @return String: HTML "<img>" tag
1177          */
1178         protected function spacerArrow() {
1179                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1180         }
1181
1182         /**
1183          * Enhanced RC ungrouped line.
1184          *
1185          * @param $rcObj RecentChange
1186          * @return String: a HTML formatted line (generated using $r)
1187          */
1188         protected function recentChangesBlockLine( $rcObj ) {
1189                 global $wgRCShowChangedSize;
1190
1191                 wfProfileIn( __METHOD__ );
1192                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1193
1194                 $type = $rcObj->mAttribs['rc_type'];
1195                 $logType = $rcObj->mAttribs['rc_log_type'];
1196                 $classes = array( 'mw-enhanced-rc' );
1197                 if ( $logType ) {
1198                         # Log entry
1199                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
1200                                         . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1201                 } else {
1202                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
1203                                         $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1204                 }
1205                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
1206                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
1207                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1208                         Html::openElement( 'tr' );
1209
1210                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
1211                 # Flag and Timestamp
1212                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1213                         $r .= $this->recentChangesFlags( array() ); // no flags, but need the placeholders
1214                 } else {
1215                         $r .= $this->recentChangesFlags( array(
1216                                 'newpage' => $type == RC_NEW,
1217                                 'minor' => $rcObj->mAttribs['rc_minor'],
1218                                 'unpatrolled' => $rcObj->unpatrolled,
1219                                 'bot' => $rcObj->mAttribs['rc_bot'],
1220                         ) );
1221                 }
1222                 $r .= '&#160;' . $rcObj->timestamp . '&#160;</td><td>';
1223                 # Article or log link
1224                 if ( $logType ) {
1225                         $logPage = new LogPage( $logType );
1226                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
1227                         $logName = $logPage->getName()->escaped();
1228                         $r .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
1229                 } else {
1230                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1231                 }
1232                 # Diff and hist links
1233                 if ( $type != RC_LOG ) {
1234                         $query['action'] = 'history';
1235                         $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
1236                                 $rcObj->getTitle(),
1237                                 $this->message['hist'],
1238                                 array(),
1239                                 $query
1240                         ) )->escaped();
1241                 }
1242                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1243                 # Character diff
1244                 if ( $wgRCShowChangedSize ) {
1245                         $cd = $this->formatCharacterDifference( $rcObj );
1246                         if ( $cd !== '' ) {
1247                                 $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
1248                         }
1249                 }
1250
1251                 if ( $type == RC_LOG ) {
1252                         $r .= $this->insertLogEntry( $rcObj );
1253                 } else {
1254                         $r .= ' ' . $rcObj->userlink . $rcObj->usertalklink;
1255                         $r .= $this->insertComment( $rcObj );
1256                         $this->insertRollback( $r, $rcObj );
1257                 }
1258
1259                 # Tags
1260                 $this->insertTags( $r, $rcObj, $classes );
1261                 # Show how many people are watching this if enabled
1262                 $r .= $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
1263
1264                 $r .= "</td></tr></table>\n";
1265
1266                 wfProfileOut( __METHOD__ );
1267
1268                 return $r;
1269         }
1270
1271         /**
1272          * If enhanced RC is in use, this function takes the previously cached
1273          * RC lines, arranges them, and outputs the HTML
1274          *
1275          * @return string
1276          */
1277         protected function recentChangesBlock() {
1278                 if ( count ( $this->rc_cache ) == 0 ) {
1279                         return '';
1280                 }
1281
1282                 wfProfileIn( __METHOD__ );
1283
1284                 $blockOut = '';
1285                 foreach ( $this->rc_cache as $block ) {
1286                         if ( count( $block ) < 2 ) {
1287                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1288                         } else {
1289                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1290                         }
1291                 }
1292
1293                 wfProfileOut( __METHOD__ );
1294
1295                 return '<div>' . $blockOut . '</div>';
1296         }
1297
1298         /**
1299          * Returns text for the end of RC
1300          * If enhanced RC is in use, returns pretty much all the text
1301          * @return string
1302          */
1303         public function endRecentChangesList() {
1304                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1305         }
1306
1307 }