includes/revisiondelete/RevisionDelete.php

   1 <?php
   2 /**
   3  * List for revision table items
   4  *
   5  * This will check both the 'revision' table for live revisions and the
   6  * 'archive' table for traditionally-deleted revisions that have an
   7  * ar_rev_id saved.
   8  *
   9  * See RevDel_RevisionItem and RevDel_ArchivedRevisionItem for items.
  10  */
  11 class RevDel_RevisionList extends RevDel_List {
  12         var $currentRevId;
  13         var $type = 'revision';
  14         var $idField = 'rev_id';
  15         var $dateField = 'rev_timestamp';
  16         var $authorIdField = 'rev_user';
  17         var $authorNameField = 'rev_user_text';
  18
  19         /**
  20          * @param $db DatabaseBase
  21          * @return mixed
  22          */
  23         public function doQuery( $db ) {
  24                 $ids = array_map( 'intval', $this->ids );
  25                 $live = $db->select( array('revision','page'), '*',
  26                         array(
  27                                 'rev_page' => $this->title->getArticleID(),
  28                                 'rev_id'   => $ids,
  29                                 'rev_page = page_id'
  30                         ),
  31                         __METHOD__,
  32                         array( 'ORDER BY' => 'rev_id DESC' )
  33                 );
  34
  35                 if ( $live->numRows() >= count( $ids ) ) {
  36                         // All requested revisions are live, keeps things simple!
  37                         return $live;
  38                 }
  39
  40                 // Check if any requested revisions are available fully deleted.
  41                 $archived = $db->select( array( 'archive' ), '*',
  42                         array(
  43                                 'ar_rev_id' => $ids
  44                         ),
  45                         __METHOD__,
  46                         array( 'ORDER BY' => 'ar_rev_id DESC' )
  47                 );
  48
  49                 if ( $archived->numRows() == 0 ) {
  50                         return $live;
  51                 } elseif ( $live->numRows() == 0 ) {
  52                         return $archived;
  53                 } else {
  54                         // Combine the two! Whee
  55                         $rows = array();
  56                         foreach ( $live as $row ) {
  57                                 $rows[$row->rev_id] = $row;
  58                         }
  59                         foreach ( $archived as $row ) {
  60                                 $rows[$row->ar_rev_id] = $row;
  61                         }
  62                         krsort( $rows );
  63                         return new FakeResultWrapper( array_values( $rows ) );
  64                 }
  65         }
  66
  67         public function newItem( $row ) {
  68                 if ( isset( $row->rev_id ) ) {
  69                         return new RevDel_RevisionItem( $this, $row );
  70                 } elseif ( isset( $row->ar_rev_id ) ) {
  71                         return new RevDel_ArchivedRevisionItem( $this, $row );
  72                 } else {
  73                         // This shouldn't happen. :)
  74                         throw new MWException( 'Invalid row type in RevDel_RevisionList' );
  75                 }
  76         }
  77
  78         public function getCurrent() {
  79                 if ( is_null( $this->currentRevId ) ) {
  80                         $dbw = wfGetDB( DB_MASTER );
  81                         $this->currentRevId = $dbw->selectField(
  82                                 'page', 'page_latest', $this->title->pageCond(), __METHOD__ );
  83                 }
  84                 return $this->currentRevId;
  85         }
  86
  87         public function getSuppressBit() {
  88                 return Revision::DELETED_RESTRICTED;
  89         }
  90
  91         public function doPreCommitUpdates() {
  92                 $this->title->invalidateCache();
  93                 return Status::newGood();
  94         }
  95
  96         public function doPostCommitUpdates() {
  97                 $this->title->purgeSquid();
  98                 // Extensions that require referencing previous revisions may need this
  99                 wfRunHooks( 'ArticleRevisionVisibilitySet', array( &$this->title ) );
 100                 return Status::newGood();
 101         }
 102 }
 103
 104 /**
 105  * Item class for a live revision table row
 106  */
 107 class RevDel_RevisionItem extends RevDel_Item {
 108         var $revision;
 109
 110         public function __construct( $list, $row ) {
 111                 parent::__construct( $list, $row );
 112                 $this->revision = new Revision( $row );
 113         }
 114
 115         public function canView() {
 116                 return $this->revision->userCan( Revision::DELETED_RESTRICTED );
 117         }
 118
 119         public function canViewContent() {
 120                 return $this->revision->userCan( Revision::DELETED_TEXT );
 121         }
 122
 123         public function getBits() {
 124                 return $this->revision->mDeleted;
 125         }
 126
 127         public function setBits( $bits ) {
 128                 $dbw = wfGetDB( DB_MASTER );
 129                 // Update revision table
 130                 $dbw->update( 'revision',
 131                         array( 'rev_deleted' => $bits ),
 132                         array(
 133                                 'rev_id' => $this->revision->getId(),
 134                                 'rev_page' => $this->revision->getPage(),
 135                                 'rev_deleted' => $this->getBits()
 136                         ),
 137                         __METHOD__
 138                 );
 139                 if ( !$dbw->affectedRows() ) {
 140                         // Concurrent fail!
 141                         return false;
 142                 }
 143                 // Update recentchanges table
 144                 $dbw->update( 'recentchanges',
 145                         array(
 146                                 'rc_deleted' => $bits,
 147                                 'rc_patrolled' => 1
 148                         ),
 149                         array(
 150                                 'rc_this_oldid' => $this->revision->getId(), // condition
 151                                 // non-unique timestamp index
 152                                 'rc_timestamp' => $dbw->timestamp( $this->revision->getTimestamp() ),
 153                         ),
 154                         __METHOD__
 155                 );
 156                 return true;
 157         }
 158
 159         public function isDeleted() {
 160                 return $this->revision->isDeleted( Revision::DELETED_TEXT );
 161         }
 162
 163         public function isHideCurrentOp( $newBits ) {
 164                 return ( $newBits & Revision::DELETED_TEXT )
 165                         && $this->list->getCurrent() == $this->getId();
 166         }
 167
 168         /**
 169          * Get the HTML link to the revision text.
 170          * Overridden by RevDel_ArchiveItem.
 171          */
 172         protected function getRevisionLink() {
 173                 $date = $this->getLang()->timeanddate( $this->revision->getTimestamp(), true );
 174                 if ( $this->isDeleted() && !$this->canViewContent() ) {
 175                         return $date;
 176                 }
 177                 return Linker::link(
 178                         $this->list->title,
 179                         $date,
 180                         array(),
 181                         array(
 182                                 'oldid' => $this->revision->getId(),
 183                                 'unhide' => 1
 184                         )
 185                 );
 186         }
 187
 188         /**
 189          * Get the HTML link to the diff.
 190          * Overridden by RevDel_ArchiveItem
 191          */
 192         protected function getDiffLink() {
 193                 if ( $this->isDeleted() && !$this->canViewContent() ) {
 194                         return wfMsgHtml('diff');
 195                 } else {
 196                         return
 197                                 Linker::link(
 198                                         $this->list->title,
 199                                         wfMsgHtml('diff'),
 200                                         array(),
 201                                         array(
 202                                                 'diff' => $this->revision->getId(),
 203                                                 'oldid' => 'prev',
 204                                                 'unhide' => 1
 205                                         ),
 206                                         array(
 207                                                 'known',
 208                                                 'noclasses'
 209                                         )
 210                                 );
 211                 }
 212         }
 213
 214         public function getHTML() {
 215                 $difflink = $this->getDiffLink();
 216                 $revlink = $this->getRevisionLink();
 217                 $userlink = Linker::revUserLink( $this->revision );
 218                 $comment = Linker::revComment( $this->revision );
 219                 if ( $this->isDeleted() ) {
 220                         $revlink = "<span class=\"history-deleted\">$revlink</span>";
 221                 }
 222                 return "<li>($difflink) $revlink $userlink $comment</li>";
 223         }
 224 }
 225
 226 /**
 227  * List for archive table items, i.e. revisions deleted via action=delete
 228  */
 229 class RevDel_ArchiveList extends RevDel_RevisionList {
 230         var $type = 'archive';
 231         var $idField = 'ar_timestamp';
 232         var $dateField = 'ar_timestamp';
 233         var $authorIdField = 'ar_user';
 234         var $authorNameField = 'ar_user_text';
 235
 236         /**
 237          * @param $db DatabaseBase
 238          * @return mixed
 239          */
 240         public function doQuery( $db ) {
 241                 $timestamps = array();
 242                 foreach ( $this->ids as $id ) {
 243                         $timestamps[] = $db->timestamp( $id );
 244                 }
 245                 return $db->select( 'archive', '*',
 246                                 array(
 247                                         'ar_namespace' => $this->title->getNamespace(),
 248                                         'ar_title'     => $this->title->getDBkey(),
 249                                         'ar_timestamp' => $timestamps
 250                                 ),
 251                                 __METHOD__,
 252                                 array( 'ORDER BY' => 'ar_timestamp DESC' )
 253                         );
 254         }
 255
 256         public function newItem( $row ) {
 257                 return new RevDel_ArchiveItem( $this, $row );
 258         }
 259
 260         public function doPreCommitUpdates() {
 261                 return Status::newGood();
 262         }
 263
 264         public function doPostCommitUpdates() {
 265                 return Status::newGood();
 266         }
 267 }
 268
 269 /**
 270  * Item class for a archive table row
 271  */
 272 class RevDel_ArchiveItem extends RevDel_RevisionItem {
 273         public function __construct( $list, $row ) {
 274                 RevDel_Item::__construct( $list, $row );
 275                 $this->revision = Revision::newFromArchiveRow( $row,
 276                         array( 'page' => $this->list->title->getArticleId() ) );
 277         }
 278
 279         public function getId() {
 280                 # Convert DB timestamp to MW timestamp
 281                 return $this->revision->getTimestamp();
 282         }
 283
 284         public function setBits( $bits ) {
 285                 $dbw = wfGetDB( DB_MASTER );
 286                 $dbw->update( 'archive',
 287                         array( 'ar_deleted' => $bits ),
 288                         array( 'ar_namespace' => $this->list->title->getNamespace(),
 289                                 'ar_title'     => $this->list->title->getDBkey(),
 290                                 // use timestamp for index
 291                                 'ar_timestamp' => $this->row->ar_timestamp,
 292                                 'ar_rev_id'    => $this->row->ar_rev_id,
 293                                 'ar_deleted' => $this->getBits()
 294                         ),
 295                         __METHOD__ );
 296                 return (bool)$dbw->affectedRows();
 297         }
 298
 299         protected function getRevisionLink() {
 300                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 301                 $date = $this->getLang()->timeanddate( $this->revision->getTimestamp(), true );
 302                 if ( $this->isDeleted() && !$this->canViewContent() ) {
 303                         return $date;
 304                 }
 305                 return Linker::link( $undelete, $date, array(),
 306                         array(
 307                                 'target' => $this->list->title->getPrefixedText(),
 308                                 'timestamp' => $this->revision->getTimestamp()
 309                         ) );
 310         }
 311
 312         protected function getDiffLink() {
 313                 if ( $this->isDeleted() && !$this->canViewContent() ) {
 314                         return wfMsgHtml( 'diff' );
 315                 }
 316                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 317                 return Linker::link( $undelete, wfMsgHtml('diff'), array(),
 318                         array(
 319                                 'target' => $this->list->title->getPrefixedText(),
 320                                 'diff' => 'prev',
 321                                 'timestamp' => $this->revision->getTimestamp()
 322                         ) );
 323         }
 324 }
 325
 326
 327 /**
 328  * Item class for a archive table row by ar_rev_id -- actually
 329  * used via RevDel_RevisionList.
 330  */
 331 class RevDel_ArchivedRevisionItem extends RevDel_ArchiveItem {
 332         public function __construct( $list, $row ) {
 333                 RevDel_Item::__construct( $list, $row );
 334
 335                 $this->revision = Revision::newFromArchiveRow( $row,
 336                         array( 'page' => $this->list->title->getArticleId() ) );
 337         }
 338
 339         public function getId() {
 340                 return $this->revision->getId();
 341         }
 342
 343         public function setBits( $bits ) {
 344                 $dbw = wfGetDB( DB_MASTER );
 345                 $dbw->update( 'archive',
 346                         array( 'ar_deleted' => $bits ),
 347                         array( 'ar_rev_id' => $this->row->ar_rev_id,
 348                                    'ar_deleted' => $this->getBits()
 349                         ),
 350                         __METHOD__ );
 351                 return (bool)$dbw->affectedRows();
 352         }
 353 }
 354
 355 /**
 356  * List for oldimage table items
 357  */
 358 class RevDel_FileList extends RevDel_List {
 359         var $type = 'oldimage';
 360         var $idField = 'oi_archive_name';
 361         var $dateField = 'oi_timestamp';
 362         var $authorIdField = 'oi_user';
 363         var $authorNameField = 'oi_user_text';
 364         var $storeBatch, $deleteBatch, $cleanupBatch;
 365
 366         /**
 367          * @param $db DatabaseBase
 368          * @return mixed
 369          */
 370         public function doQuery( $db ) {
 371                 $archiveNames = array();
 372                 foreach( $this->ids as $timestamp ) {
 373                         $archiveNames[] = $timestamp . '!' . $this->title->getDBkey();
 374                 }
 375                 return $db->select( 'oldimage', '*',
 376                         array(
 377                                 'oi_name'         => $this->title->getDBkey(),
 378                                 'oi_archive_name' => $archiveNames
 379                         ),
 380                         __METHOD__,
 381                         array( 'ORDER BY' => 'oi_timestamp DESC' )
 382                 );
 383         }
 384
 385         public function newItem( $row ) {
 386                 return new RevDel_FileItem( $this, $row );
 387         }
 388
 389         public function clearFileOps() {
 390                 $this->deleteBatch = array();
 391                 $this->storeBatch = array();
 392                 $this->cleanupBatch = array();
 393         }
 394
 395         public function doPreCommitUpdates() {
 396                 $status = Status::newGood();
 397                 $repo = RepoGroup::singleton()->getLocalRepo();
 398                 if ( $this->storeBatch ) {
 399                         $status->merge( $repo->storeBatch( $this->storeBatch, FileRepo::OVERWRITE_SAME ) );
 400                 }
 401                 if ( !$status->isOK() ) {
 402                         return $status;
 403                 }
 404                 if ( $this->deleteBatch ) {
 405                         $status->merge( $repo->deleteBatch( $this->deleteBatch ) );
 406                 }
 407                 if ( !$status->isOK() ) {
 408                         // Running cleanupDeletedBatch() after a failed storeBatch() with the DB already
 409                         // modified (but destined for rollback) causes data loss
 410                         return $status;
 411                 }
 412                 if ( $this->cleanupBatch ) {
 413                         $status->merge( $repo->cleanupDeletedBatch( $this->cleanupBatch ) );
 414                 }
 415                 return $status;
 416         }
 417
 418         public function doPostCommitUpdates() {
 419                 $file = wfLocalFile( $this->title );
 420                 $file->purgeCache();
 421                 $file->purgeDescription();
 422                 return Status::newGood();
 423         }
 424
 425         public function getSuppressBit() {
 426                 return File::DELETED_RESTRICTED;
 427         }
 428 }
 429
 430 /**
 431  * Item class for an oldimage table row
 432  */
 433 class RevDel_FileItem extends RevDel_Item {
 434
 435         /**
 436          * @var File
 437          */
 438         var $file;
 439
 440         public function __construct( $list, $row ) {
 441                 parent::__construct( $list, $row );
 442                 $this->file = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 443         }
 444
 445         public function getId() {
 446                 $parts = explode( '!', $this->row->oi_archive_name );
 447                 return $parts[0];
 448         }
 449
 450         public function canView() {
 451                 return $this->file->userCan( File::DELETED_RESTRICTED );
 452         }
 453
 454         public function canViewContent() {
 455                 return $this->file->userCan( File::DELETED_FILE );
 456         }
 457
 458         public function getBits() {
 459                 return $this->file->getVisibility();
 460         }
 461
 462         public function setBits( $bits ) {
 463                 # Queue the file op
 464                 # @todo FIXME: Move to LocalFile.php
 465                 if ( $this->isDeleted() ) {
 466                         if ( $bits & File::DELETED_FILE ) {
 467                                 # Still deleted
 468                         } else {
 469                                 # Newly undeleted
 470                                 $key = $this->file->getStorageKey();
 471                                 $srcRel = $this->file->repo->getDeletedHashPath( $key ) . $key;
 472                                 $this->list->storeBatch[] = array(
 473                                         $this->file->repo->getVirtualUrl( 'deleted' ) . '/' . $srcRel,
 474                                         'public',
 475                                         $this->file->getRel()
 476                                 );
 477                                 $this->list->cleanupBatch[] = $key;
 478                         }
 479                 } elseif ( $bits & File::DELETED_FILE ) {
 480                         # Newly deleted
 481                         $key = $this->file->getStorageKey();
 482                         $dstRel = $this->file->repo->getDeletedHashPath( $key ) . $key;
 483                         $this->list->deleteBatch[] = array( $this->file->getRel(), $dstRel );
 484                 }
 485
 486                 # Do the database operations
 487                 $dbw = wfGetDB( DB_MASTER );
 488                 $dbw->update( 'oldimage',
 489                         array( 'oi_deleted' => $bits ),
 490                         array(
 491                                 'oi_name' => $this->row->oi_name,
 492                                 'oi_timestamp' => $this->row->oi_timestamp,
 493                                 'oi_deleted' => $this->getBits()
 494                         ),
 495                         __METHOD__
 496                 );
 497                 return (bool)$dbw->affectedRows();
 498         }
 499
 500         public function isDeleted() {
 501                 return $this->file->isDeleted( File::DELETED_FILE );
 502         }
 503
 504         /**
 505          * Get the link to the file.
 506          * Overridden by RevDel_ArchivedFileItem.
 507          */
 508         protected function getLink() {
 509                 $date = $this->getLang()->timeanddate( $this->file->getTimestamp(), true  );
 510                 if ( $this->isDeleted() ) {
 511                         # Hidden files...
 512                         if ( !$this->canViewContent() ) {
 513                                 $link = $date;
 514                         } else {
 515                                 $link = Linker::link(
 516                                         $this->special->getTitle(),
 517                                         $date, array(),
 518                                         array(
 519                                                 'target' => $this->list->title->getPrefixedText(),
 520                                                 'file'   => $this->file->getArchiveName(),
 521                                                 'token'  => $this->getUser()->editToken( $this->file->getArchiveName() )
 522                                         )
 523                                 );
 524                         }
 525                         return '<span class="history-deleted">' . $link . '</span>';
 526                 } else {
 527                         # Regular files...
 528                         return Xml::element( 'a', array( 'href' => $this->file->getUrl() ), $date );
 529                 }
 530         }
 531         /**
 532          * Generate a user tool link cluster if the current user is allowed to view it
 533          * @return string HTML
 534          */
 535         protected function getUserTools() {
 536                 if( $this->file->userCan( Revision::DELETED_USER ) ) {
 537                         $link = Linker::userLink( $this->file->user, $this->file->user_text ) .
 538                                 Linker::userToolLinks( $this->file->user, $this->file->user_text );
 539                 } else {
 540                         $link = wfMsgHtml( 'rev-deleted-user' );
 541                 }
 542                 if( $this->file->isDeleted( Revision::DELETED_USER ) ) {
 543                         return '<span class="history-deleted">' . $link . '</span>';
 544                 }
 545                 return $link;
 546         }
 547
 548         /**
 549          * Wrap and format the file's comment block, if the current
 550          * user is allowed to view it.
 551          *
 552          * @return string HTML
 553          */
 554         protected function getComment() {
 555                 if( $this->file->userCan( File::DELETED_COMMENT ) ) {
 556                         $block = Linker::commentBlock( $this->file->description );
 557                 } else {
 558                         $block = ' ' . wfMsgHtml( 'rev-deleted-comment' );
 559                 }
 560                 if( $this->file->isDeleted( File::DELETED_COMMENT ) ) {
 561                         return "<span class=\"history-deleted\">$block</span>";
 562                 }
 563                 return $block;
 564         }
 565
 566         public function getHTML() {
 567                 $data =
 568                         wfMsg(
 569                                 'widthheight',
 570                                 $this->getLang()->formatNum( $this->file->getWidth() ),
 571                                 $this->getLang()->formatNum( $this->file->getHeight() )
 572                         ) .
 573                         ' (' .
 574                         wfMsgExt( 'nbytes', 'parsemag', $this->getLang()->formatNum( $this->file->getSize() ) ) .
 575                         ')';
 576
 577                 return '<li>' . $this->getLink() . ' ' . $this->getUserTools() . ' ' .
 578                         $data . ' ' . $this->getComment(). '</li>';
 579         }
 580 }
 581
 582 /**
 583  * List for filearchive table items
 584  */
 585 class RevDel_ArchivedFileList extends RevDel_FileList {
 586         var $type = 'filearchive';
 587         var $idField = 'fa_id';
 588         var $dateField = 'fa_timestamp';
 589         var $authorIdField = 'fa_user';
 590         var $authorNameField = 'fa_user_text';
 591
 592         /**
 593          * @param $db DatabaseBase
 594          * @return mixed
 595          */
 596         public function doQuery( $db ) {
 597                 $ids = array_map( 'intval', $this->ids );
 598                 return $db->select( 'filearchive', '*',
 599                         array(
 600                                 'fa_name' => $this->title->getDBkey(),
 601                                 'fa_id'   => $ids
 602                         ),
 603                         __METHOD__,
 604                         array( 'ORDER BY' => 'fa_id DESC' )
 605                 );
 606         }
 607
 608         public function newItem( $row ) {
 609                 return new RevDel_ArchivedFileItem( $this, $row );
 610         }
 611 }
 612
 613 /**
 614  * Item class for a filearchive table row
 615  */
 616 class RevDel_ArchivedFileItem extends RevDel_FileItem {
 617         public function __construct( $list, $row ) {
 618                 RevDel_Item::__construct( $list, $row );
 619                 $this->file = ArchivedFile::newFromRow( $row );
 620         }
 621
 622         public function getId() {
 623                 return $this->row->fa_id;
 624         }
 625
 626         public function setBits( $bits ) {
 627                 $dbw = wfGetDB( DB_MASTER );
 628                 $dbw->update( 'filearchive',
 629                         array( 'fa_deleted' => $bits ),
 630                         array(
 631                                 'fa_id' => $this->row->fa_id,
 632                                 'fa_deleted' => $this->getBits(),
 633                         ),
 634                         __METHOD__
 635                 );
 636                 return (bool)$dbw->affectedRows();
 637         }
 638
 639         protected function getLink() {
 640                 $date = $this->getLang()->timeanddate( $this->file->getTimestamp(), true  );
 641                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 642                 $key = $this->file->getKey();
 643                 # Hidden files...
 644                 if( !$this->canViewContent() ) {
 645                         $link = $date;
 646                 } else {
 647                         $link = Linker::link( $undelete, $date, array(),
 648                                 array(
 649                                         'target' => $this->list->title->getPrefixedText(),
 650                                         'file' => $key,
 651                                         'token' => $this->getUser()->editToken( $key )
 652                                 )
 653                         );
 654                 }
 655                 if( $this->isDeleted() ) {
 656                         $link = '<span class="history-deleted">' . $link . '</span>';
 657                 }
 658                 return $link;
 659         }
 660 }
 661
 662 /**
 663  * List for logging table items
 664  */
 665 class RevDel_LogList extends RevDel_List {
 666         var $type = 'logging';
 667         var $idField = 'log_id';
 668         var $dateField = 'log_timestamp';
 669         var $authorIdField = 'log_user';
 670         var $authorNameField = 'log_user_text';
 671
 672         /**
 673          * @param $db DatabaseBase
 674          * @return mixed
 675          */
 676         public function doQuery( $db ) {
 677                 $ids = array_map( 'intval', $this->ids );
 678                 return $db->select( 'logging', '*',
 679                         array( 'log_id' => $ids ),
 680                         __METHOD__,
 681                         array( 'ORDER BY' => 'log_id DESC' )
 682                 );
 683         }
 684
 685         public function newItem( $row ) {
 686                 return new RevDel_LogItem( $this, $row );
 687         }
 688
 689         public function getSuppressBit() {
 690                 return Revision::DELETED_RESTRICTED;
 691         }
 692
 693         public function getLogAction() {
 694                 return 'event';
 695         }
 696
 697         public function getLogParams( $params ) {
 698                 return array(
 699                         implode( ',', $params['ids'] ),
 700                         "ofield={$params['oldBits']}",
 701                         "nfield={$params['newBits']}"
 702                 );
 703         }
 704 }
 705
 706 /**
 707  * Item class for a logging table row
 708  */
 709 class RevDel_LogItem extends RevDel_Item {
 710         public function canView() {
 711                 return LogEventsList::userCan( $this->row, Revision::DELETED_RESTRICTED );
 712         }
 713
 714         public function canViewContent() {
 715                 return true; // none
 716         }
 717
 718         public function getBits() {
 719                 return $this->row->log_deleted;
 720         }
 721
 722         public function setBits( $bits ) {
 723                 $dbw = wfGetDB( DB_MASTER );
 724                 $dbw->update( 'recentchanges',
 725                         array(
 726                                 'rc_deleted' => $bits,
 727                                 'rc_patrolled' => 1
 728                         ),
 729                         array(
 730                                 'rc_logid' => $this->row->log_id,
 731                                 'rc_timestamp' => $this->row->log_timestamp // index
 732                         ),
 733                         __METHOD__
 734                 );
 735                 $dbw->update( 'logging',
 736                         array( 'log_deleted' => $bits ),
 737                         array(
 738                                 'log_id' => $this->row->log_id,
 739                                 'log_deleted' => $this->getBits()
 740                         ),
 741                         __METHOD__
 742                 );
 743                 return (bool)$dbw->affectedRows();
 744         }
 745
 746         public function getHTML() {
 747                 $date = htmlspecialchars( $this->getLang()->timeanddate( $this->row->log_timestamp ) );
 748                 $paramArray = LogPage::extractParams( $this->row->log_params );
 749                 $title = Title::makeTitle( $this->row->log_namespace, $this->row->log_title );
 750
 751                 // Log link for this page
 752                 $loglink = Linker::link(
 753                         SpecialPage::getTitleFor( 'Log' ),
 754                         wfMsgHtml( 'log' ),
 755                         array(),
 756                         array( 'page' => $title->getPrefixedText() )
 757                 );
 758                 // Action text
 759                 if( !$this->canView() ) {
 760                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 761                 } else {
 762                         $action = LogPage::actionText( $this->row->log_type, $this->row->log_action, $title,
 763                                 $this->special->getSkin(), $paramArray, true, true );
 764                         if( $this->row->log_deleted & LogPage::DELETED_ACTION )
 765                                 $action = '<span class="history-deleted">' . $action . '</span>';
 766                 }
 767                 // User links
 768                 $userLink = Linker::userLink( $this->row->log_user,
 769                         User::WhoIs( $this->row->log_user ) );
 770                 if( LogEventsList::isDeleted($this->row,LogPage::DELETED_USER) ) {
 771                         $userLink = '<span class="history-deleted">' . $userLink . '</span>';
 772                 }
 773                 // Comment
 774                 $comment = $this->getLang()->getDirMark() . Linker::commentBlock( $this->row->log_comment );
 775                 if( LogEventsList::isDeleted($this->row,LogPage::DELETED_COMMENT) ) {
 776                         $comment = '<span class="history-deleted">' . $comment . '</span>';
 777                 }
 778                 return "<li>($loglink) $date $userLink $action $comment</li>";
 779         }
 780 }