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          * @return Boolean
 460          */
 461         public static function usePatrol() {
 462                 global $wgUser;
 463                 return $wgUser->useRCPatrol();
 464         }
 465
 466         /**
 467          * Returns the string which indicates the number of watching users
 468          * @return string
 469          */
 470         protected function numberofWatchingusers( $count ) {
 471                 static $cache = array();
 472                 if ( $count > 0 ) {
 473                         if ( !isset( $cache[$count] ) ) {
 474                                 $cache[$count] = $this->msg( 'number_of_watching_users_RCview' )->numParams( $count )->escaped();
 475                         }
 476                         return $cache[$count];
 477                 } else {
 478                         return '';
 479                 }
 480         }
 481
 482         /**
 483          * Determine if said field of a revision is hidden
 484          * @param $rc RCCacheEntry
 485          * @param $field Integer: one of DELETED_* bitfield constants
 486          * @return Boolean
 487          */
 488         public static function isDeleted( $rc, $field ) {
 489                 return ( $rc->mAttribs['rc_deleted'] & $field ) == $field;
 490         }
 491
 492         /**
 493          * Determine if the current user is allowed to view a particular
 494          * field of this revision, if it's marked as deleted.
 495          * @param $rc RCCacheEntry
 496          * @param $field Integer
 497          * @param $user User object to check, or null to use $wgUser
 498          * @return Boolean
 499          */
 500         public static function userCan( $rc, $field, User $user = null ) {
 501                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 502                         return LogEventsList::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 503                 } else {
 504                         return Revision::userCanBitfield( $rc->mAttribs['rc_deleted'], $field, $user );
 505                 }
 506         }
 507
 508         /**
 509          * @param $link string
 510          * @param $watched bool
 511          * @return string
 512          */
 513         protected function maybeWatchedLink( $link, $watched = false ) {
 514                 if ( $watched ) {
 515                         return '<strong class="mw-watched">' . $link . '</strong>';
 516                 } else {
 517                         return '<span class="mw-rc-unwatched">' . $link . '</span>';
 518                 }
 519         }
 520
 521         /** Inserts a rollback link
 522          *
 523          * @param $s string
 524          * @param $rc RecentChange
 525          */
 526         public function insertRollback( &$s, &$rc ) {
 527                 if ( $rc->mAttribs['rc_type'] == RC_EDIT && $rc->mAttribs['rc_this_oldid'] && $rc->mAttribs['rc_cur_id'] ) {
 528                         $page = $rc->getTitle();
 529                         /** Check for rollback and edit permissions, disallow special pages, and only
 530                           * show a link on the top-most revision */
 531                         if ( $this->getUser()->isAllowed( 'rollback' ) && $rc->mAttribs['page_latest'] == $rc->mAttribs['rc_this_oldid'] )
 532                         {
 533                                 $rev = new Revision( array(
 534                                         'title' => $page,
 535                                         'id' => $rc->mAttribs['rc_this_oldid'],
 536                                         'user' => $rc->mAttribs['rc_user'],
 537                                         'user_text' => $rc->mAttribs['rc_user_text'],
 538                                         'deleted' => $rc->mAttribs['rc_deleted']
 539                                 ) );
 540                                 $s .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
 541                         }
 542                 }
 543         }
 544
 545         /**
 546          * @param $s string
 547          * @param $rc RecentChange
 548          * @param $classes
 549          */
 550         public function insertTags( &$s, &$rc, &$classes ) {
 551                 if ( empty( $rc->mAttribs['ts_tags'] ) ) {
 552                         return;
 553                 }
 554
 555                 list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow( $rc->mAttribs['ts_tags'], 'changeslist' );
 556                 $classes = array_merge( $classes, $newClasses );
 557                 $s .= ' ' . $tagSummary;
 558         }
 559
 560         public function insertExtra( &$s, &$rc, &$classes ) {
 561                 // Empty, used for subclasses to add anything special.
 562         }
 563
 564         protected function showAsUnpatrolled( RecentChange $rc ) {
 565                 $unpatrolled = false;
 566                 if ( !$rc->mAttribs['rc_patrolled'] ) {
 567                         if ( $this->getUser()->useRCPatrol() ) {
 568                                 $unpatrolled = true;
 569                         } elseif ( $this->getUser()->useNPPatrol() && $rc->mAttribs['rc_type'] == RC_NEW ) {
 570                                 $unpatrolled = true;
 571                         }
 572                 }
 573                 return $unpatrolled;
 574         }
 575 }
 576
 577 /**
 578  * Generate a list of changes using the good old system (no javascript)
 579  */
 580 class OldChangesList extends ChangesList {
 581         /**
 582          * Format a line using the old system (aka without any javascript).
 583          *
 584          * @param $rc RecentChange, passed by reference
 585          * @param bool $watched (default false)
 586          * @param int $linenumber (default null)
 587          *
 588          * @return string|bool
 589          */
 590         public function recentChangesLine( &$rc, $watched = false, $linenumber = null ) {
 591                 global $wgRCShowChangedSize;
 592                 wfProfileIn( __METHOD__ );
 593
 594                 # Should patrol-related stuff be shown?
 595                 $unpatrolled = $this->showAsUnpatrolled( $rc );
 596
 597                 $dateheader = ''; // $s now contains only <li>...</li>, for hooks' convenience.
 598                 $this->insertDateHeader( $dateheader, $rc->mAttribs['rc_timestamp'] );
 599
 600                 $s = '';
 601                 $classes = array();
 602                 // use mw-line-even/mw-line-odd class only if linenumber is given (feature from bug 14468)
 603                 if ( $linenumber ) {
 604                         if ( $linenumber & 1 ) {
 605                                 $classes[] = 'mw-line-odd';
 606                         } else {
 607                                 $classes[] = 'mw-line-even';
 608                         }
 609                 }
 610
 611                 // Indicate watched status on the line to allow for more
 612                 // comprehensive styling.
 613                 $classes[] = $watched && $rc->mAttribs['rc_timestamp'] >= $watched
 614                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 615
 616                 // Moved pages (very very old, not supported anymore)
 617                 if ( $rc->mAttribs['rc_type'] == RC_MOVE || $rc->mAttribs['rc_type'] == RC_MOVE_OVER_REDIRECT ) {
 618                 // Log entries
 619                 } elseif ( $rc->mAttribs['rc_log_type'] ) {
 620                         $logtitle = SpecialPage::getTitleFor( 'Log', $rc->mAttribs['rc_log_type'] );
 621                         $this->insertLog( $s, $logtitle, $rc->mAttribs['rc_log_type'] );
 622                 // Log entries (old format) or log targets, and special pages
 623                 } elseif ( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 624                         list( $name, $subpage ) = SpecialPageFactory::resolveAlias( $rc->mAttribs['rc_title'] );
 625                         if ( $name == 'Log' ) {
 626                                 $this->insertLog( $s, $rc->getTitle(), $subpage );
 627                         }
 628                 // Regular entries
 629                 } else {
 630                         $this->insertDiffHist( $s, $rc, $unpatrolled );
 631                         # M, N, b and ! (minor, new, bot and unpatrolled)
 632                         $s .= $this->recentChangesFlags(
 633                                 array(
 634                                         'newpage' => $rc->mAttribs['rc_type'] == RC_NEW,
 635                                         'minor' => $rc->mAttribs['rc_minor'],
 636                                         'unpatrolled' => $unpatrolled,
 637                                         'bot' => $rc->mAttribs['rc_bot']
 638                                 ),
 639                                 ''
 640                         );
 641                         $this->insertArticleLink( $s, $rc, $unpatrolled, $watched );
 642                 }
 643                 # Edit/log timestamp
 644                 $this->insertTimestamp( $s, $rc );
 645                 # Bytes added or removed
 646                 if ( $wgRCShowChangedSize ) {
 647                         $cd = $this->formatCharacterDifference( $rc );
 648                         if ( $cd !== '' ) {
 649                                 $s .= $cd . '  <span class="mw-changeslist-separator">. .</span> ';
 650                         }
 651                 }
 652
 653                 if ( $rc->mAttribs['rc_type'] == RC_LOG ) {
 654                         $s .= $this->insertLogEntry( $rc );
 655                 } else {
 656                         # User tool links
 657                         $this->insertUserRelatedLinks( $s, $rc );
 658                         # LTR/RTL direction mark
 659                         $s .= $this->getLanguage()->getDirMark();
 660                         $s .= $this->insertComment( $rc );
 661                 }
 662
 663                 # Tags
 664                 $this->insertTags( $s, $rc, $classes );
 665                 # Rollback
 666                 $this->insertRollback( $s, $rc );
 667                 # For subclasses
 668                 $this->insertExtra( $s, $rc, $classes );
 669
 670                 # How many users watch this page
 671                 if ( $rc->numberofWatchingusers > 0 ) {
 672                         $s .= ' ' . $this->numberofWatchingusers( $rc->numberofWatchingusers );
 673                 }
 674
 675                 if ( $this->watchlist ) {
 676                         $classes[] = Sanitizer::escapeClass( 'watchlist-' . $rc->mAttribs['rc_namespace'] . '-' . $rc->mAttribs['rc_title'] );
 677                 }
 678
 679                 if ( !wfRunHooks( 'OldChangesListRecentChangesLine', array( &$this, &$s, $rc, &$classes ) ) ) {
 680                         wfProfileOut( __METHOD__ );
 681                         return false;
 682                 }
 683
 684                 wfProfileOut( __METHOD__ );
 685                 return "$dateheader<li class=\"" . implode( ' ', $classes ) . "\">" . $s . "</li>\n";
 686         }
 687 }
 688
 689 /**
 690  * Generate a list of changes using an Enhanced system (uses javascript).
 691  */
 692 class EnhancedChangesList extends ChangesList {
 693
 694         protected $rc_cache;
 695
 696         /**
 697          * Add the JavaScript file for enhanced changeslist
 698          * @return String
 699          */
 700         public function beginRecentChangesList() {
 701                 $this->rc_cache = array();
 702                 $this->rcMoveIndex = 0;
 703                 $this->rcCacheIndex = 0;
 704                 $this->lastdate = '';
 705                 $this->rclistOpen = false;
 706                 $this->getOutput()->addModuleStyles( array(
 707                         'mediawiki.special.changeslist',
 708                         'mediawiki.special.changeslist.enhanced',
 709                 ) );
 710                 $this->getOutput()->addModules( array(
 711                         'jquery.makeCollapsible',
 712                         'mediawiki.icon',
 713                 ) );
 714                 return '';
 715         }
 716         /**
 717          * Format a line for enhanced recentchange (aka with javascript and block of lines).
 718          *
 719          * @param $baseRC RecentChange
 720          * @param $watched bool
 721          *
 722          * @return string
 723          */
 724         public function recentChangesLine( &$baseRC, $watched = false ) {
 725                 wfProfileIn( __METHOD__ );
 726
 727                 # Create a specialised object
 728                 $rc = RCCacheEntry::newFromParent( $baseRC );
 729
 730                 $curIdEq = array( 'curid' => $rc->mAttribs['rc_cur_id'] );
 731
 732                 # If it's a new day, add the headline and flush the cache
 733                 $date = $this->getLanguage()->userDate( $rc->mAttribs['rc_timestamp'], $this->getUser() );
 734                 $ret = '';
 735                 if ( $date != $this->lastdate ) {
 736                         # Process current cache
 737                         $ret = $this->recentChangesBlock();
 738                         $this->rc_cache = array();
 739                         $ret .= Xml::element( 'h4', null, $date ) . "\n";
 740                         $this->lastdate = $date;
 741                 }
 742
 743                 # Should patrol-related stuff be shown?
 744                 $rc->unpatrolled = $this->showAsUnpatrolled( $rc );
 745
 746                 $showdifflinks = true;
 747                 # Make article link
 748                 $type = $rc->mAttribs['rc_type'];
 749                 $logType = $rc->mAttribs['rc_log_type'];
 750                 // Page moves, very old style, not supported anymore
 751                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 752                 // New unpatrolled pages
 753                 } elseif ( $rc->unpatrolled && $type == RC_NEW ) {
 754                         $clink = Linker::linkKnown( $rc->getTitle() );
 755                 // Log entries
 756                 } elseif ( $type == RC_LOG ) {
 757                         if ( $logType ) {
 758                                 $logtitle = SpecialPage::getTitleFor( 'Log', $logType );
 759                                 $logpage = new LogPage( $logType );
 760                                 $logname = $logpage->getName()->escaped();
 761                                 $clink = $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logtitle, $logname ) )->escaped();
 762                         } else {
 763                                 $clink = Linker::link( $rc->getTitle() );
 764                         }
 765                         $watched = false;
 766                 // Log entries (old format) and special pages
 767                 } elseif ( $rc->mAttribs['rc_namespace'] == NS_SPECIAL ) {
 768                         wfDebug( "Unexpected special page in recentchanges\n" );
 769                         $clink = '';
 770                 // Edits
 771                 } else {
 772                         $clink = Linker::linkKnown( $rc->getTitle() );
 773                 }
 774
 775                 # Don't show unusable diff links
 776                 if ( !ChangesList::userCan( $rc, Revision::DELETED_TEXT, $this->getUser() ) ) {
 777                         $showdifflinks = false;
 778                 }
 779
 780                 $time = $this->getLanguage()->userTime( $rc->mAttribs['rc_timestamp'], $this->getUser() );
 781                 $rc->watched = $watched;
 782                 $rc->link = $clink;
 783                 $rc->timestamp = $time;
 784                 $rc->numberofWatchingusers = $baseRC->numberofWatchingusers;
 785
 786                 # Make "cur" and "diff" links.  Do not use link(), it is too slow if
 787                 # called too many times (50% of CPU time on RecentChanges!).
 788                 $thisOldid = $rc->mAttribs['rc_this_oldid'];
 789                 $lastOldid = $rc->mAttribs['rc_last_oldid'];
 790
 791                 $querycur = $curIdEq + array( 'diff' => '0', 'oldid' => $thisOldid );
 792                 $querydiff = $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid );
 793
 794                 if ( !$showdifflinks ) {
 795                         $curLink = $this->message['cur'];
 796                         $diffLink = $this->message['diff'];
 797                 } elseif ( in_array( $type, array( RC_NEW, RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 798                         if ( $type != RC_NEW ) {
 799                                 $curLink = $this->message['cur'];
 800                         } else {
 801                                 $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 802                                 $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 803                         }
 804                         $diffLink = $this->message['diff'];
 805                 } else {
 806                         $diffUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querydiff ) );
 807                         $curUrl = htmlspecialchars( $rc->getTitle()->getLinkURL( $querycur ) );
 808                         $diffLink = "<a href=\"$diffUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['diff']}</a>";
 809                         $curLink = "<a href=\"$curUrl\" tabindex=\"{$baseRC->counter}\">{$this->message['cur']}</a>";
 810                 }
 811
 812                 # Make "last" link
 813                 if ( !$showdifflinks || !$lastOldid ) {
 814                         $lastLink = $this->message['last'];
 815                 } elseif ( in_array( $type, array( RC_LOG, RC_MOVE, RC_MOVE_OVER_REDIRECT ) ) ) {
 816                         $lastLink = $this->message['last'];
 817                 } else {
 818                         $lastLink = Linker::linkKnown( $rc->getTitle(), $this->message['last'],
 819                                 array(), $curIdEq + array( 'diff' => $thisOldid, 'oldid' => $lastOldid ) );
 820                 }
 821
 822                 # Make user links
 823                 if ( $this->isDeleted( $rc, Revision::DELETED_USER ) ) {
 824                         $rc->userlink = ' <span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
 825                 } else {
 826                         $rc->userlink = Linker::userLink( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 827                         $rc->usertalklink = Linker::userToolLinks( $rc->mAttribs['rc_user'], $rc->mAttribs['rc_user_text'] );
 828                 }
 829
 830                 $rc->lastlink = $lastLink;
 831                 $rc->curlink = $curLink;
 832                 $rc->difflink = $diffLink;
 833
 834                 # Put accumulated information into the cache, for later display
 835                 # Page moves go on their own line
 836                 $title = $rc->getTitle();
 837                 $secureName = $title->getPrefixedDBkey();
 838                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
 839                         # Use an @ character to prevent collision with page names
 840                         $this->rc_cache['@@' . ( $this->rcMoveIndex++ )] = array( $rc );
 841                 } else {
 842                         # Logs are grouped by type
 843                         if ( $type == RC_LOG ) {
 844                                 $secureName = SpecialPage::getTitleFor( 'Log', $logType )->getPrefixedDBkey();
 845                         }
 846                         if ( !isset( $this->rc_cache[$secureName] ) ) {
 847                                 $this->rc_cache[$secureName] = array();
 848                         }
 849
 850                         array_push( $this->rc_cache[$secureName], $rc );
 851                 }
 852
 853                 wfProfileOut( __METHOD__ );
 854
 855                 return $ret;
 856         }
 857
 858         /**
 859          * Enhanced RC group
 860          * @return string
 861          */
 862         protected function recentChangesBlockGroup( $block ) {
 863                 global $wgRCShowChangedSize;
 864
 865                 wfProfileIn( __METHOD__ );
 866
 867                 # Add the namespace and title of the block as part of the class
 868                 $classes = array( 'mw-collapsible', 'mw-collapsed', 'mw-enhanced-rc' );
 869                 if ( $block[0]->mAttribs['rc_log_type'] ) {
 870                         # Log entry
 871                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
 872                                         . $block[0]->mAttribs['rc_log_type'] . '-' . $block[0]->mAttribs['rc_title'] );
 873                 } else {
 874                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns'
 875                                         . $block[0]->mAttribs['rc_namespace'] . '-' . $block[0]->mAttribs['rc_title'] );
 876                 }
 877                 $classes[] = $block[0]->watched && $block[0]->mAttribs['rc_timestamp'] >= $block[0]->watched
 878                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
 879                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
 880                         Html::openElement( 'tr' );
 881
 882                 # Collate list of users
 883                 $userlinks = array();
 884                 # Other properties
 885                 $unpatrolled = false;
 886                 $isnew = false;
 887                 $allBots = true;
 888                 $allMinors = true;
 889                 $curId = $currentRevision = 0;
 890                 # Some catalyst variables...
 891                 $namehidden = true;
 892                 $allLogs = true;
 893                 foreach ( $block as $rcObj ) {
 894                         $oldid = $rcObj->mAttribs['rc_last_oldid'];
 895                         if ( $rcObj->mAttribs['rc_type'] == RC_NEW ) {
 896                                 $isnew = true;
 897                         }
 898                         // If all log actions to this page were hidden, then don't
 899                         // give the name of the affected page for this block!
 900                         if ( !$this->isDeleted( $rcObj, LogPage::DELETED_ACTION ) ) {
 901                                 $namehidden = false;
 902                         }
 903                         $u = $rcObj->userlink;
 904                         if ( !isset( $userlinks[$u] ) ) {
 905                                 $userlinks[$u] = 0;
 906                         }
 907                         if ( $rcObj->unpatrolled ) {
 908                                 $unpatrolled = true;
 909                         }
 910                         if ( $rcObj->mAttribs['rc_type'] != RC_LOG ) {
 911                                 $allLogs = false;
 912                         }
 913                         # Get the latest entry with a page_id and oldid
 914                         # since logs may not have these.
 915                         if ( !$curId && $rcObj->mAttribs['rc_cur_id'] ) {
 916                                 $curId = $rcObj->mAttribs['rc_cur_id'];
 917                         }
 918                         if ( !$currentRevision && $rcObj->mAttribs['rc_this_oldid'] ) {
 919                                 $currentRevision = $rcObj->mAttribs['rc_this_oldid'];
 920                         }
 921
 922                         if ( !$rcObj->mAttribs['rc_bot'] ) {
 923                                 $allBots = false;
 924                         }
 925                         if ( !$rcObj->mAttribs['rc_minor'] ) {
 926                                 $allMinors = false;
 927                         }
 928
 929                         $userlinks[$u]++;
 930                 }
 931
 932                 # Sort the list and convert to text
 933                 krsort( $userlinks );
 934                 asort( $userlinks );
 935                 $users = array();
 936                 foreach ( $userlinks as $userlink => $count ) {
 937                         $text = $userlink;
 938                         $text .= $this->getLanguage()->getDirMark();
 939                         if ( $count > 1 ) {
 940                                 $text .= ' ' . $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->formatNum( $count ) . '×' )->escaped();
 941                         }
 942                         array_push( $users, $text );
 943                 }
 944
 945                 $users = ' <span class="changedby">'
 946                         . $this->msg( 'brackets' )->rawParams(
 947                                 implode( $this->message['semicolon-separator'], $users )
 948                         )->escaped() . '</span>';
 949
 950                 $tl = '<span class="mw-collapsible-toggle mw-collapsible-arrow mw-enhancedchanges-arrow mw-enhancedchanges-arrow-space"></span>';
 951                 $r .= "<td>$tl</td>";
 952
 953                 # Main line
 954                 $r .= '<td class="mw-enhanced-rc">' . $this->recentChangesFlags( array(
 955                         'newpage' => $isnew, # show, when one have this flag
 956                         'minor' => $allMinors, # show only, when all have this flag
 957                         'unpatrolled' => $unpatrolled, # show, when one have this flag
 958                         'bot' => $allBots, # show only, when all have this flag
 959                 ) );
 960
 961                 # Timestamp
 962                 $r .= '&#160;' . $block[0]->timestamp . '&#160;</td><td>';
 963
 964                 # Article link
 965                 if ( $namehidden ) {
 966                         $r .= ' <span class="history-deleted">' . $this->msg( 'rev-deleted-event' )->escaped() . '</span>';
 967                 } elseif ( $allLogs ) {
 968                         $r .= $this->maybeWatchedLink( $block[0]->link, $block[0]->watched );
 969                 } else {
 970                         $this->insertArticleLink( $r, $block[0], $block[0]->unpatrolled, $block[0]->watched );
 971                 }
 972
 973                 $r .= $this->getLanguage()->getDirMark();
 974
 975                 $queryParams['curid'] = $curId;
 976                 # Changes message
 977                 $n = count( $block );
 978                 static $nchanges = array();
 979                 if ( !isset( $nchanges[$n] ) ) {
 980                         $nchanges[$n] = $this->msg( 'nchanges' )->numParams( $n )->escaped();
 981                 }
 982                 # Total change link
 983                 $r .= ' ';
 984                 $logtext = '';
 985                 if ( !$allLogs ) {
 986                         if ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
 987                                 $logtext .= $nchanges[$n];
 988                         } elseif ( $isnew ) {
 989                                 $logtext .= $nchanges[$n];
 990                         } else {
 991                                 $params = $queryParams;
 992                                 $params['diff'] = $currentRevision;
 993                                 $params['oldid'] = $oldid;
 994
 995                                 $logtext .= Linker::link(
 996                                         $block[0]->getTitle(),
 997                                         $nchanges[$n],
 998                                         array(),
 999                                         $params,
1000                                         array( 'known', 'noclasses' )
1001                                 );
1002                         }
1003                 }
1004
1005                 # History
1006                 if ( $allLogs ) {
1007                         // don't show history link for logs
1008                 } elseif ( $namehidden || !$block[0]->getTitle()->exists() ) {
1009                         $logtext .= $this->message['pipe-separator'] . $this->message['hist'];
1010                 } else {
1011                         $params = $queryParams;
1012                         $params['action'] = 'history';
1013
1014                         $logtext .= $this->message['pipe-separator'] .
1015                                 Linker::linkKnown(
1016                                         $block[0]->getTitle(),
1017                                         $this->message['hist'],
1018                                         array(),
1019                                         $params
1020                                 );
1021                 }
1022
1023                 if ( $logtext !== '' ) {
1024                         $r .= $this->msg( 'parentheses' )->rawParams( $logtext )->escaped();
1025                 }
1026
1027                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1028
1029                 # Character difference (does not apply if only log items)
1030                 if ( $wgRCShowChangedSize && !$allLogs ) {
1031                         $last = 0;
1032                         $first = count( $block ) - 1;
1033                         # Some events (like logs) have an "empty" size, so we need to skip those...
1034                         while ( $last < $first && $block[$last]->mAttribs['rc_new_len'] === null ) {
1035                                 $last++;
1036                         }
1037                         while ( $first > $last && $block[$first]->mAttribs['rc_old_len'] === null ) {
1038                                 $first--;
1039                         }
1040                         # Get net change
1041                         $chardiff = $this->formatCharacterDifference( $block[$first], $block[$last] );
1042
1043                         if ( $chardiff == '' ) {
1044                                 $r .= ' ';
1045                         } else {
1046                                 $r .= ' ' . $chardiff . ' <span class="mw-changeslist-separator">. .</span> ';
1047                         }
1048                 }
1049
1050                 $r .= $users;
1051                 $r .= $this->numberofWatchingusers( $block[0]->numberofWatchingusers );
1052
1053                 # Sub-entries
1054                 foreach ( $block as $rcObj ) {
1055                         # Classes to apply -- TODO implement
1056                         $classes = array();
1057                         $type = $rcObj->mAttribs['rc_type'];
1058
1059                         $trClass = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
1060                                 ? ' class="mw-enhanced-watched"' : '';
1061
1062                         $r .= '<tr' . $trClass . '><td></td><td class="mw-enhanced-rc">';
1063                         $r .= $this->recentChangesFlags( array(
1064                                 'newpage' => $type == RC_NEW,
1065                                 'minor' => $rcObj->mAttribs['rc_minor'],
1066                                 'unpatrolled' => $rcObj->unpatrolled,
1067                                 'bot' => $rcObj->mAttribs['rc_bot'],
1068                         ) );
1069                         $r .= '&#160;</td><td class="mw-enhanced-rc-nested"><span class="mw-enhanced-rc-time">';
1070
1071                         $params = $queryParams;
1072
1073                         if ( $rcObj->mAttribs['rc_this_oldid'] != 0 ) {
1074                                 $params['oldid'] = $rcObj->mAttribs['rc_this_oldid'];
1075                         }
1076
1077                         # Log timestamp
1078                         if ( $type == RC_LOG ) {
1079                                 $link = $rcObj->timestamp;
1080                         # Revision link
1081                         } elseif ( !ChangesList::userCan( $rcObj, Revision::DELETED_TEXT, $this->getUser() ) ) {
1082                                 $link = '<span class="history-deleted">' . $rcObj->timestamp . '</span> ';
1083                         } else {
1084
1085                                 $link = Linker::linkKnown(
1086                                                 $rcObj->getTitle(),
1087                                                 $rcObj->timestamp,
1088                                                 array(),
1089                                                 $params
1090                                         );
1091                                 if ( $this->isDeleted( $rcObj, Revision::DELETED_TEXT ) ) {
1092                                         $link = '<span class="history-deleted">' . $link . '</span> ';
1093                                 }
1094                         }
1095                         $r .= $link . '</span>';
1096
1097                         if ( !$type == RC_LOG || $type == RC_NEW ) {
1098                                 $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->curlink . $this->message['pipe-separator'] . $rcObj->lastlink )->escaped();
1099                         }
1100                         $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1101
1102                         # Character diff
1103                         if ( $wgRCShowChangedSize ) {
1104                                 $cd = $this->formatCharacterDifference( $rcObj );
1105                                 if ( $cd !== '' ) {
1106                                         $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
1107                                 }
1108                         }
1109
1110                         if ( $rcObj->mAttribs['rc_type'] == RC_LOG ) {
1111                                 $r .= $this->insertLogEntry( $rcObj );
1112                         } else {
1113                                 # User links
1114                                 $r .= $rcObj->userlink;
1115                                 $r .= $rcObj->usertalklink;
1116                                 $r .= $this->insertComment( $rcObj );
1117                         }
1118
1119                         # Rollback
1120                         $this->insertRollback( $r, $rcObj );
1121                         # Tags
1122                         $this->insertTags( $r, $rcObj, $classes );
1123
1124                         $r .= "</td></tr>\n";
1125                 }
1126                 $r .= "</table>\n";
1127
1128                 $this->rcCacheIndex++;
1129
1130                 wfProfileOut( __METHOD__ );
1131
1132                 return $r;
1133         }
1134
1135         /**
1136          * Generate HTML for an arrow or placeholder graphic
1137          * @param string $dir one of '', 'd', 'l', 'r'
1138          * @param string $alt text
1139          * @param string $title text
1140          * @return String: HTML "<img>" tag
1141          */
1142         protected function arrow( $dir, $alt = '', $title = '' ) {
1143                 global $wgStylePath;
1144                 $encUrl = htmlspecialchars( $wgStylePath . '/common/images/Arr_' . $dir . '.png' );
1145                 $encAlt = htmlspecialchars( $alt );
1146                 $encTitle = htmlspecialchars( $title );
1147                 return "<img src=\"$encUrl\" width=\"12\" height=\"12\" alt=\"$encAlt\" title=\"$encTitle\" />";
1148         }
1149
1150         /**
1151          * Generate HTML for a right- or left-facing arrow,
1152          * depending on language direction.
1153          * @return String: HTML "<img>" tag
1154          */
1155         protected function sideArrow() {
1156                 $dir = $this->getLanguage()->isRTL() ? 'l' : 'r';
1157                 return $this->arrow( $dir, '+', $this->msg( 'rc-enhanced-expand' )->text() );
1158         }
1159
1160         /**
1161          * Generate HTML for a down-facing arrow
1162          * depending on language direction.
1163          * @return String: HTML "<img>" tag
1164          */
1165         protected function downArrow() {
1166                 return $this->arrow( 'd', '-', $this->msg( 'rc-enhanced-hide' )->text() );
1167         }
1168
1169         /**
1170          * Generate HTML for a spacer image
1171          * @return String: HTML "<img>" tag
1172          */
1173         protected function spacerArrow() {
1174                 return $this->arrow( '', codepointToUtf8( 0xa0 ) ); // non-breaking space
1175         }
1176
1177         /**
1178          * Enhanced RC ungrouped line.
1179          *
1180          * @param $rcObj RecentChange
1181          * @return String: a HTML formatted line (generated using $r)
1182          */
1183         protected function recentChangesBlockLine( $rcObj ) {
1184                 global $wgRCShowChangedSize;
1185
1186                 wfProfileIn( __METHOD__ );
1187                 $query['curid'] = $rcObj->mAttribs['rc_cur_id'];
1188
1189                 $type = $rcObj->mAttribs['rc_type'];
1190                 $logType = $rcObj->mAttribs['rc_log_type'];
1191                 $classes = array( 'mw-enhanced-rc' );
1192                 if ( $logType ) {
1193                         # Log entry
1194                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-log-'
1195                                         . $logType . '-' . $rcObj->mAttribs['rc_title'] );
1196                 } else {
1197                         $classes[] = Sanitizer::escapeClass( 'mw-changeslist-ns' .
1198                                         $rcObj->mAttribs['rc_namespace'] . '-' . $rcObj->mAttribs['rc_title'] );
1199                 }
1200                 $classes[] = $rcObj->watched && $rcObj->mAttribs['rc_timestamp'] >= $rcObj->watched
1201                         ? 'mw-changeslist-line-watched' : 'mw-changeslist-line-not-watched';
1202                 $r = Html::openElement( 'table', array( 'class' => $classes ) ) .
1203                         Html::openElement( 'tr' );
1204
1205                 $r .= '<td class="mw-enhanced-rc"><span class="mw-enhancedchanges-arrow-space"></span>';
1206                 # Flag and Timestamp
1207                 if ( $type == RC_MOVE || $type == RC_MOVE_OVER_REDIRECT ) {
1208                         $r .= $this->recentChangesFlags( array() ); // no flags, but need the placeholders
1209                 } else {
1210                         $r .= $this->recentChangesFlags( array(
1211                                 'newpage' => $type == RC_NEW,
1212                                 'minor' => $rcObj->mAttribs['rc_minor'],
1213                                 'unpatrolled' => $rcObj->unpatrolled,
1214                                 'bot' => $rcObj->mAttribs['rc_bot'],
1215                         ) );
1216                 }
1217                 $r .= '&#160;' . $rcObj->timestamp . '&#160;</td><td>';
1218                 # Article or log link
1219                 if ( $logType ) {
1220                         $logPage = new LogPage( $logType );
1221                         $logTitle = SpecialPage::getTitleFor( 'Log', $logType );
1222                         $logName = $logPage->getName()->escaped();
1223                         $r .= $this->msg( 'parentheses' )->rawParams( Linker::linkKnown( $logTitle, $logName ) )->escaped();
1224                 } else {
1225                         $this->insertArticleLink( $r, $rcObj, $rcObj->unpatrolled, $rcObj->watched );
1226                 }
1227                 # Diff and hist links
1228                 if ( $type != RC_LOG ) {
1229                         $query['action'] = 'history';
1230                         $r .= ' ' . $this->msg( 'parentheses' )->rawParams( $rcObj->difflink . $this->message['pipe-separator'] . Linker::linkKnown(
1231                                 $rcObj->getTitle(),
1232                                 $this->message['hist'],
1233                                 array(),
1234                                 $query
1235                         ) )->escaped();
1236                 }
1237                 $r .= ' <span class="mw-changeslist-separator">. .</span> ';
1238                 # Character diff
1239                 if ( $wgRCShowChangedSize ) {
1240                         $cd = $this->formatCharacterDifference( $rcObj );
1241                         if ( $cd !== '' ) {
1242                                 $r .= $cd . ' <span class="mw-changeslist-separator">. .</span> ';
1243                         }
1244                 }
1245
1246                 if ( $type == RC_LOG ) {
1247                         $r .= $this->insertLogEntry( $rcObj );
1248                 } else {
1249                         $r .= ' ' . $rcObj->userlink . $rcObj->usertalklink;
1250                         $r .= $this->insertComment( $rcObj );
1251                         $this->insertRollback( $r, $rcObj );
1252                 }
1253
1254                 # Tags
1255                 $this->insertTags( $r, $rcObj, $classes );
1256                 # Show how many people are watching this if enabled
1257                 $r .= $this->numberofWatchingusers( $rcObj->numberofWatchingusers );
1258
1259                 $r .= "</td></tr></table>\n";
1260
1261                 wfProfileOut( __METHOD__ );
1262
1263                 return $r;
1264         }
1265
1266         /**
1267          * If enhanced RC is in use, this function takes the previously cached
1268          * RC lines, arranges them, and outputs the HTML
1269          *
1270          * @return string
1271          */
1272         protected function recentChangesBlock() {
1273                 if ( count ( $this->rc_cache ) == 0 ) {
1274                         return '';
1275                 }
1276
1277                 wfProfileIn( __METHOD__ );
1278
1279                 $blockOut = '';
1280                 foreach ( $this->rc_cache as $block ) {
1281                         if ( count( $block ) < 2 ) {
1282                                 $blockOut .= $this->recentChangesBlockLine( array_shift( $block ) );
1283                         } else {
1284                                 $blockOut .= $this->recentChangesBlockGroup( $block );
1285                         }
1286                 }
1287
1288                 wfProfileOut( __METHOD__ );
1289
1290                 return '<div>' . $blockOut . '</div>';
1291         }
1292
1293         /**
1294          * Returns text for the end of RC
1295          * If enhanced RC is in use, returns pretty much all the text
1296          * @return string
1297          */
1298         public function endRecentChangesList() {
1299                 return $this->recentChangesBlock() . parent::endRecentChangesList();
1300         }
1301
1302 }