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
  14         public function getType() {
  15                 return 'revision';
  16         }
  17
  18         public static function getRelationType() {
  19                 return 'rev_id';
  20         }
  21
  22         /**
  23          * @param $db DatabaseBase
  24          * @return mixed
  25          */
  26         public function doQuery( $db ) {
  27                 $ids = array_map( 'intval', $this->ids );
  28                 $live = $db->select(
  29                         array( 'revision', 'page', 'user' ),
  30                         array_merge( Revision::selectFields(), Revision::selectUserFields() ),
  31                         array(
  32                                 'rev_page' => $this->title->getArticleID(),
  33                                 'rev_id'   => $ids,
  34                         ),
  35                         __METHOD__,
  36                         array( 'ORDER BY' => 'rev_id DESC' ),
  37                         array(
  38                                 'page' => Revision::pageJoinCond(),
  39                                 'user' => Revision::userJoinCond() )
  40                 );
  41
  42                 if ( $live->numRows() >= count( $ids ) ) {
  43                         // All requested revisions are live, keeps things simple!
  44                         return $live;
  45                 }
  46
  47                 // Check if any requested revisions are available fully deleted.
  48                 $archived = $db->select( array( 'archive' ), '*',
  49                         array(
  50                                 'ar_rev_id' => $ids
  51                         ),
  52                         __METHOD__,
  53                         array( 'ORDER BY' => 'ar_rev_id DESC' )
  54                 );
  55
  56                 if ( $archived->numRows() == 0 ) {
  57                         return $live;
  58                 } elseif ( $live->numRows() == 0 ) {
  59                         return $archived;
  60                 } else {
  61                         // Combine the two! Whee
  62                         $rows = array();
  63                         foreach ( $live as $row ) {
  64                                 $rows[$row->rev_id] = $row;
  65                         }
  66                         foreach ( $archived as $row ) {
  67                                 $rows[$row->ar_rev_id] = $row;
  68                         }
  69                         krsort( $rows );
  70                         return new FakeResultWrapper( array_values( $rows ) );
  71                 }
  72         }
  73
  74         public function newItem( $row ) {
  75                 if ( isset( $row->rev_id ) ) {
  76                         return new RevDel_RevisionItem( $this, $row );
  77                 } elseif ( isset( $row->ar_rev_id ) ) {
  78                         return new RevDel_ArchivedRevisionItem( $this, $row );
  79                 } else {
  80                         // This shouldn't happen. :)
  81                         throw new MWException( 'Invalid row type in RevDel_RevisionList' );
  82                 }
  83         }
  84
  85         public function getCurrent() {
  86                 if ( is_null( $this->currentRevId ) ) {
  87                         $dbw = wfGetDB( DB_MASTER );
  88                         $this->currentRevId = $dbw->selectField(
  89                                 'page', 'page_latest', $this->title->pageCond(), __METHOD__ );
  90                 }
  91                 return $this->currentRevId;
  92         }
  93
  94         public function getSuppressBit() {
  95                 return Revision::DELETED_RESTRICTED;
  96         }
  97
  98         public function doPreCommitUpdates() {
  99                 $this->title->invalidateCache();
 100                 return Status::newGood();
 101         }
 102
 103         public function doPostCommitUpdates() {
 104                 $this->title->purgeSquid();
 105                 // Extensions that require referencing previous revisions may need this
 106                 wfRunHooks( 'ArticleRevisionVisibilitySet', array( &$this->title ) );
 107                 return Status::newGood();
 108         }
 109 }
 110
 111 /**
 112  * Item class for a live revision table row
 113  */
 114 class RevDel_RevisionItem extends RevDel_Item {
 115         var $revision;
 116
 117         public function __construct( $list, $row ) {
 118                 parent::__construct( $list, $row );
 119                 $this->revision = new Revision( $row );
 120         }
 121
 122         public function getIdField() {
 123                 return 'rev_id';
 124         }
 125
 126         public function getTimestampField() {
 127                 return 'rev_timestamp';
 128         }
 129
 130         public function getAuthorIdField() {
 131                 return 'rev_user';
 132         }
 133
 134         public function getAuthorNameField() {
 135                 return 'user_name'; // see Revision::selectUserFields()
 136         }
 137
 138         public function canView() {
 139                 return $this->revision->userCan( Revision::DELETED_RESTRICTED, $this->list->getUser() );
 140         }
 141
 142         public function canViewContent() {
 143                 return $this->revision->userCan( Revision::DELETED_TEXT, $this->list->getUser() );
 144         }
 145
 146         public function getBits() {
 147                 return $this->revision->getVisibility();
 148         }
 149
 150         public function setBits( $bits ) {
 151                 $dbw = wfGetDB( DB_MASTER );
 152                 // Update revision table
 153                 $dbw->update( 'revision',
 154                         array( 'rev_deleted' => $bits ),
 155                         array(
 156                                 'rev_id' => $this->revision->getId(),
 157                                 'rev_page' => $this->revision->getPage(),
 158                                 'rev_deleted' => $this->getBits()
 159                         ),
 160                         __METHOD__
 161                 );
 162                 if ( !$dbw->affectedRows() ) {
 163                         // Concurrent fail!
 164                         return false;
 165                 }
 166                 // Update recentchanges table
 167                 $dbw->update( 'recentchanges',
 168                         array(
 169                                 'rc_deleted' => $bits,
 170                                 'rc_patrolled' => 1
 171                         ),
 172                         array(
 173                                 'rc_this_oldid' => $this->revision->getId(), // condition
 174                                 // non-unique timestamp index
 175                                 'rc_timestamp' => $dbw->timestamp( $this->revision->getTimestamp() ),
 176                         ),
 177                         __METHOD__
 178                 );
 179                 return true;
 180         }
 181
 182         public function isDeleted() {
 183                 return $this->revision->isDeleted( Revision::DELETED_TEXT );
 184         }
 185
 186         public function isHideCurrentOp( $newBits ) {
 187                 return ( $newBits & Revision::DELETED_TEXT )
 188                         && $this->list->getCurrent() == $this->getId();
 189         }
 190
 191         /**
 192          * Get the HTML link to the revision text.
 193          * Overridden by RevDel_ArchiveItem.
 194          */
 195         protected function getRevisionLink() {
 196                 $date = $this->list->getLanguage()->timeanddate( $this->revision->getTimestamp(), true );
 197                 if ( $this->isDeleted() && !$this->canViewContent() ) {
 198                         return $date;
 199                 }
 200                 return Linker::link(
 201                         $this->list->title,
 202                         $date,
 203                         array(),
 204                         array(
 205                                 'oldid' => $this->revision->getId(),
 206                                 'unhide' => 1
 207                         )
 208                 );
 209         }
 210
 211         /**
 212          * Get the HTML link to the diff.
 213          * Overridden by RevDel_ArchiveItem
 214          */
 215         protected function getDiffLink() {
 216                 if ( $this->isDeleted() && !$this->canViewContent() ) {
 217                         return wfMsgHtml('diff');
 218                 } else {
 219                         return
 220                                 Linker::link(
 221                                         $this->list->title,
 222                                         wfMsgHtml('diff'),
 223                                         array(),
 224                                         array(
 225                                                 'diff' => $this->revision->getId(),
 226                                                 'oldid' => 'prev',
 227                                                 'unhide' => 1
 228                                         ),
 229                                         array(
 230                                                 'known',
 231                                                 'noclasses'
 232                                         )
 233                                 );
 234                 }
 235         }
 236
 237         public function getHTML() {
 238                 $difflink = $this->getDiffLink();
 239                 $revlink = $this->getRevisionLink();
 240                 $userlink = Linker::revUserLink( $this->revision );
 241                 $comment = Linker::revComment( $this->revision );
 242                 if ( $this->isDeleted() ) {
 243                         $revlink = "<span class=\"history-deleted\">$revlink</span>";
 244                 }
 245                 return "<li>($difflink) $revlink $userlink $comment</li>";
 246         }
 247 }
 248
 249 /**
 250  * List for archive table items, i.e. revisions deleted via action=delete
 251  */
 252 class RevDel_ArchiveList extends RevDel_RevisionList {
 253         public function getType() {
 254                 return 'archive';
 255         }
 256
 257         public static function getRelationType() {
 258                 return 'ar_timestamp';
 259         }
 260
 261         /**
 262          * @param $db DatabaseBase
 263          * @return mixed
 264          */
 265         public function doQuery( $db ) {
 266                 $timestamps = array();
 267                 foreach ( $this->ids as $id ) {
 268                         $timestamps[] = $db->timestamp( $id );
 269                 }
 270                 return $db->select( 'archive', '*',
 271                                 array(
 272                                         'ar_namespace' => $this->title->getNamespace(),
 273                                         'ar_title'     => $this->title->getDBkey(),
 274                                         'ar_timestamp' => $timestamps
 275                                 ),
 276                                 __METHOD__,
 277                                 array( 'ORDER BY' => 'ar_timestamp DESC' )
 278                         );
 279         }
 280
 281         public function newItem( $row ) {
 282                 return new RevDel_ArchiveItem( $this, $row );
 283         }
 284
 285         public function doPreCommitUpdates() {
 286                 return Status::newGood();
 287         }
 288
 289         public function doPostCommitUpdates() {
 290                 return Status::newGood();
 291         }
 292 }
 293
 294 /**
 295  * Item class for a archive table row
 296  */
 297 class RevDel_ArchiveItem extends RevDel_RevisionItem {
 298         public function __construct( $list, $row ) {
 299                 RevDel_Item::__construct( $list, $row );
 300                 $this->revision = Revision::newFromArchiveRow( $row,
 301                         array( 'page' => $this->list->title->getArticleId() ) );
 302         }
 303
 304         public function getIdField() {
 305                 return 'ar_timestamp';
 306         }
 307
 308         public function getTimestampField() {
 309                 return 'ar_timestamp';
 310         }
 311
 312         public function getAuthorIdField() {
 313                 return 'ar_user';
 314         }
 315
 316         public function getAuthorNameField() {
 317                 return 'ar_user_text';
 318         }
 319
 320         public function getId() {
 321                 # Convert DB timestamp to MW timestamp
 322                 return $this->revision->getTimestamp();
 323         }
 324
 325         public function setBits( $bits ) {
 326                 $dbw = wfGetDB( DB_MASTER );
 327                 $dbw->update( 'archive',
 328                         array( 'ar_deleted' => $bits ),
 329                         array(
 330                                 'ar_namespace'  => $this->list->title->getNamespace(),
 331                                 'ar_title'      => $this->list->title->getDBkey(),
 332                                 // use timestamp for index
 333                                 'ar_timestamp'  => $this->row->ar_timestamp,
 334                                 'ar_rev_id'     => $this->row->ar_rev_id,
 335                                 'ar_deleted'    => $this->getBits()
 336                         ),
 337                         __METHOD__ );
 338                 return (bool)$dbw->affectedRows();
 339         }
 340
 341         protected function getRevisionLink() {
 342                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 343                 $date = $this->list->getLanguage()->timeanddate( $this->revision->getTimestamp(), true );
 344                 if ( $this->isDeleted() && !$this->canViewContent() ) {
 345                         return $date;
 346                 }
 347                 return Linker::link( $undelete, $date, array(),
 348                         array(
 349                                 'target' => $this->list->title->getPrefixedText(),
 350                                 'timestamp' => $this->revision->getTimestamp()
 351                         ) );
 352         }
 353
 354         protected function getDiffLink() {
 355                 if ( $this->isDeleted() && !$this->canViewContent() ) {
 356                         return wfMsgHtml( 'diff' );
 357                 }
 358                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 359                 return Linker::link( $undelete, wfMsgHtml('diff'), array(),
 360                         array(
 361                                 'target' => $this->list->title->getPrefixedText(),
 362                                 'diff' => 'prev',
 363                                 'timestamp' => $this->revision->getTimestamp()
 364                         ) );
 365         }
 366 }
 367
 368
 369 /**
 370  * Item class for a archive table row by ar_rev_id -- actually
 371  * used via RevDel_RevisionList.
 372  */
 373 class RevDel_ArchivedRevisionItem extends RevDel_ArchiveItem {
 374         public function __construct( $list, $row ) {
 375                 RevDel_Item::__construct( $list, $row );
 376
 377                 $this->revision = Revision::newFromArchiveRow( $row,
 378                         array( 'page' => $this->list->title->getArticleId() ) );
 379         }
 380
 381         public function getIdField() {
 382                 return 'ar_rev_id';
 383         }
 384
 385         public function getId() {
 386                 return $this->revision->getId();
 387         }
 388
 389         public function setBits( $bits ) {
 390                 $dbw = wfGetDB( DB_MASTER );
 391                 $dbw->update( 'archive',
 392                         array( 'ar_deleted' => $bits ),
 393                         array( 'ar_rev_id' => $this->row->ar_rev_id,
 394                                    'ar_deleted' => $this->getBits()
 395                         ),
 396                         __METHOD__ );
 397                 return (bool)$dbw->affectedRows();
 398         }
 399 }
 400
 401 /**
 402  * List for oldimage table items
 403  */
 404 class RevDel_FileList extends RevDel_List {
 405         public function getType() {
 406                 return 'oldimage';
 407         }
 408
 409         public static function getRelationType() {
 410                 return 'oi_archive_name';
 411         }
 412
 413         var $storeBatch, $deleteBatch, $cleanupBatch;
 414
 415         /**
 416          * @param $db DatabaseBase
 417          * @return mixed
 418          */
 419         public function doQuery( $db ) {
 420                 $archiveNames = array();
 421                 foreach( $this->ids as $timestamp ) {
 422                         $archiveNames[] = $timestamp . '!' . $this->title->getDBkey();
 423                 }
 424                 return $db->select( 'oldimage', '*',
 425                         array(
 426                                 'oi_name'         => $this->title->getDBkey(),
 427                                 'oi_archive_name' => $archiveNames
 428                         ),
 429                         __METHOD__,
 430                         array( 'ORDER BY' => 'oi_timestamp DESC' )
 431                 );
 432         }
 433
 434         public function newItem( $row ) {
 435                 return new RevDel_FileItem( $this, $row );
 436         }
 437
 438         public function clearFileOps() {
 439                 $this->deleteBatch = array();
 440                 $this->storeBatch = array();
 441                 $this->cleanupBatch = array();
 442         }
 443
 444         public function doPreCommitUpdates() {
 445                 $status = Status::newGood();
 446                 $repo = RepoGroup::singleton()->getLocalRepo();
 447                 if ( $this->storeBatch ) {
 448                         $status->merge( $repo->storeBatch( $this->storeBatch, FileRepo::OVERWRITE_SAME ) );
 449                 }
 450                 if ( !$status->isOK() ) {
 451                         return $status;
 452                 }
 453                 if ( $this->deleteBatch ) {
 454                         $status->merge( $repo->deleteBatch( $this->deleteBatch ) );
 455                 }
 456                 if ( !$status->isOK() ) {
 457                         // Running cleanupDeletedBatch() after a failed storeBatch() with the DB already
 458                         // modified (but destined for rollback) causes data loss
 459                         return $status;
 460                 }
 461                 if ( $this->cleanupBatch ) {
 462                         $status->merge( $repo->cleanupDeletedBatch( $this->cleanupBatch ) );
 463                 }
 464                 return $status;
 465         }
 466
 467         public function doPostCommitUpdates() {
 468                 $file = wfLocalFile( $this->title );
 469                 $file->purgeCache();
 470                 $file->purgeDescription();
 471                 return Status::newGood();
 472         }
 473
 474         public function getSuppressBit() {
 475                 return File::DELETED_RESTRICTED;
 476         }
 477 }
 478
 479 /**
 480  * Item class for an oldimage table row
 481  */
 482 class RevDel_FileItem extends RevDel_Item {
 483
 484         /**
 485          * @var File
 486          */
 487         var $file;
 488
 489         public function __construct( $list, $row ) {
 490                 parent::__construct( $list, $row );
 491                 $this->file = RepoGroup::singleton()->getLocalRepo()->newFileFromRow( $row );
 492         }
 493
 494         public function getIdField() {
 495                 return 'oi_archive_name';
 496         }
 497
 498         public function getTimestampField() {
 499                 return 'oi_timestamp';
 500         }
 501
 502         public function getAuthorIdField() {
 503                 return 'oi_user';
 504         }
 505
 506         public function getAuthorNameField() {
 507                 return 'oi_user_text';
 508         }
 509
 510         public function getId() {
 511                 $parts = explode( '!', $this->row->oi_archive_name );
 512                 return $parts[0];
 513         }
 514
 515         public function canView() {
 516                 return $this->file->userCan( File::DELETED_RESTRICTED, $this->list->getUser() );
 517         }
 518
 519         public function canViewContent() {
 520                 return $this->file->userCan( File::DELETED_FILE, $this->list->getUser() );
 521         }
 522
 523         public function getBits() {
 524                 return $this->file->getVisibility();
 525         }
 526
 527         public function setBits( $bits ) {
 528                 # Queue the file op
 529                 # @todo FIXME: Move to LocalFile.php
 530                 if ( $this->isDeleted() ) {
 531                         if ( $bits & File::DELETED_FILE ) {
 532                                 # Still deleted
 533                         } else {
 534                                 # Newly undeleted
 535                                 $key = $this->file->getStorageKey();
 536                                 $srcRel = $this->file->repo->getDeletedHashPath( $key ) . $key;
 537                                 $this->list->storeBatch[] = array(
 538                                         $this->file->repo->getVirtualUrl( 'deleted' ) . '/' . $srcRel,
 539                                         'public',
 540                                         $this->file->getRel()
 541                                 );
 542                                 $this->list->cleanupBatch[] = $key;
 543                         }
 544                 } elseif ( $bits & File::DELETED_FILE ) {
 545                         # Newly deleted
 546                         $key = $this->file->getStorageKey();
 547                         $dstRel = $this->file->repo->getDeletedHashPath( $key ) . $key;
 548                         $this->list->deleteBatch[] = array( $this->file->getRel(), $dstRel );
 549                 }
 550
 551                 # Do the database operations
 552                 $dbw = wfGetDB( DB_MASTER );
 553                 $dbw->update( 'oldimage',
 554                         array( 'oi_deleted' => $bits ),
 555                         array(
 556                                 'oi_name' => $this->row->oi_name,
 557                                 'oi_timestamp' => $this->row->oi_timestamp,
 558                                 'oi_deleted' => $this->getBits()
 559                         ),
 560                         __METHOD__
 561                 );
 562                 return (bool)$dbw->affectedRows();
 563         }
 564
 565         public function isDeleted() {
 566                 return $this->file->isDeleted( File::DELETED_FILE );
 567         }
 568
 569         /**
 570          * Get the link to the file.
 571          * Overridden by RevDel_ArchivedFileItem.
 572          */
 573         protected function getLink() {
 574                 $date = $this->list->getLanguage()->timeanddate( $this->file->getTimestamp(), true  );
 575                 if ( $this->isDeleted() ) {
 576                         # Hidden files...
 577                         if ( !$this->canViewContent() ) {
 578                                 $link = $date;
 579                         } else {
 580                                 $revdelete = SpecialPage::getTitleFor( 'Revisiondelete' );
 581                                 $link = Linker::link(
 582                                         $revdelete,
 583                                         $date, array(),
 584                                         array(
 585                                                 'target' => $this->list->title->getPrefixedText(),
 586                                                 'file'   => $this->file->getArchiveName(),
 587                                                 'token'  => $this->list->getUser()->getEditToken(
 588                                                         $this->file->getArchiveName() )
 589                                         )
 590                                 );
 591                         }
 592                         return '<span class="history-deleted">' . $link . '</span>';
 593                 } else {
 594                         # Regular files...
 595                         return Xml::element( 'a', array( 'href' => $this->file->getUrl() ), $date );
 596                 }
 597         }
 598         /**
 599          * Generate a user tool link cluster if the current user is allowed to view it
 600          * @return string HTML
 601          */
 602         protected function getUserTools() {
 603                 if( $this->file->userCan( Revision::DELETED_USER, $this->list->getUser() ) ) {
 604                         $link = Linker::userLink( $this->file->user, $this->file->user_text ) .
 605                                 Linker::userToolLinks( $this->file->user, $this->file->user_text );
 606                 } else {
 607                         $link = wfMsgHtml( 'rev-deleted-user' );
 608                 }
 609                 if( $this->file->isDeleted( Revision::DELETED_USER ) ) {
 610                         return '<span class="history-deleted">' . $link . '</span>';
 611                 }
 612                 return $link;
 613         }
 614
 615         /**
 616          * Wrap and format the file's comment block, if the current
 617          * user is allowed to view it.
 618          *
 619          * @return string HTML
 620          */
 621         protected function getComment() {
 622                 if( $this->file->userCan( File::DELETED_COMMENT, $this->list->getUser() ) ) {
 623                         $block = Linker::commentBlock( $this->file->description );
 624                 } else {
 625                         $block = ' ' . wfMsgHtml( 'rev-deleted-comment' );
 626                 }
 627                 if( $this->file->isDeleted( File::DELETED_COMMENT ) ) {
 628                         return "<span class=\"history-deleted\">$block</span>";
 629                 }
 630                 return $block;
 631         }
 632
 633         public function getHTML() {
 634                 $data =
 635                         wfMsg(
 636                                 'widthheight',
 637                                 $this->list->getLanguage()->formatNum( $this->file->getWidth() ),
 638                                 $this->list->getLanguage()->formatNum( $this->file->getHeight() )
 639                         ) .
 640                         ' (' .
 641                         wfMsgExt( 'nbytes', 'parsemag', $this->list->getLanguage()->formatNum( $this->file->getSize() ) ) .
 642                         ')';
 643
 644                 return '<li>' . $this->getLink() . ' ' . $this->getUserTools() . ' ' .
 645                         $data . ' ' . $this->getComment(). '</li>';
 646         }
 647 }
 648
 649 /**
 650  * List for filearchive table items
 651  */
 652 class RevDel_ArchivedFileList extends RevDel_FileList {
 653         public function getType() {
 654                 return 'filearchive';
 655         }
 656
 657         public static function getRelationType() {
 658                 return 'fa_id';
 659         }
 660
 661         /**
 662          * @param $db DatabaseBase
 663          * @return mixed
 664          */
 665         public function doQuery( $db ) {
 666                 $ids = array_map( 'intval', $this->ids );
 667                 return $db->select( 'filearchive', '*',
 668                         array(
 669                                 'fa_name' => $this->title->getDBkey(),
 670                                 'fa_id'   => $ids
 671                         ),
 672                         __METHOD__,
 673                         array( 'ORDER BY' => 'fa_id DESC' )
 674                 );
 675         }
 676
 677         public function newItem( $row ) {
 678                 return new RevDel_ArchivedFileItem( $this, $row );
 679         }
 680 }
 681
 682 /**
 683  * Item class for a filearchive table row
 684  */
 685 class RevDel_ArchivedFileItem extends RevDel_FileItem {
 686         public function __construct( $list, $row ) {
 687                 RevDel_Item::__construct( $list, $row );
 688                 $this->file = ArchivedFile::newFromRow( $row );
 689         }
 690
 691         public function getIdField() {
 692                 return 'fa_id';
 693         }
 694
 695         public function getTimestampField() {
 696                 return 'fa_timestamp';
 697         }
 698
 699         public function getAuthorIdField() {
 700                 return 'fa_user';
 701         }
 702
 703         public function getAuthorNameField() {
 704                 return 'fa_user_text';
 705         }
 706
 707         public function getId() {
 708                 return $this->row->fa_id;
 709         }
 710
 711         public function setBits( $bits ) {
 712                 $dbw = wfGetDB( DB_MASTER );
 713                 $dbw->update( 'filearchive',
 714                         array( 'fa_deleted' => $bits ),
 715                         array(
 716                                 'fa_id' => $this->row->fa_id,
 717                                 'fa_deleted' => $this->getBits(),
 718                         ),
 719                         __METHOD__
 720                 );
 721                 return (bool)$dbw->affectedRows();
 722         }
 723
 724         protected function getLink() {
 725                 $date = $this->list->getLanguage()->timeanddate( $this->file->getTimestamp(), true  );
 726                 $undelete = SpecialPage::getTitleFor( 'Undelete' );
 727                 $key = $this->file->getKey();
 728                 # Hidden files...
 729                 if( !$this->canViewContent() ) {
 730                         $link = $date;
 731                 } else {
 732                         $link = Linker::link( $undelete, $date, array(),
 733                                 array(
 734                                         'target' => $this->list->title->getPrefixedText(),
 735                                         'file' => $key,
 736                                         'token' => $this->list->getUser()->getEditToken( $key )
 737                                 )
 738                         );
 739                 }
 740                 if( $this->isDeleted() ) {
 741                         $link = '<span class="history-deleted">' . $link . '</span>';
 742                 }
 743                 return $link;
 744         }
 745 }
 746
 747 /**
 748  * List for logging table items
 749  */
 750 class RevDel_LogList extends RevDel_List {
 751         public function getType() {
 752                 return 'logging';
 753         }
 754
 755         public static function getRelationType() {
 756                 return 'log_id';
 757         }
 758
 759         /**
 760          * @param $db DatabaseBase
 761          * @return mixed
 762          */
 763         public function doQuery( $db ) {
 764                 $ids = array_map( 'intval', $this->ids );
 765                 return $db->select( 'logging', '*',
 766                         array( 'log_id' => $ids ),
 767                         __METHOD__,
 768                         array( 'ORDER BY' => 'log_id DESC' )
 769                 );
 770         }
 771
 772         public function newItem( $row ) {
 773                 return new RevDel_LogItem( $this, $row );
 774         }
 775
 776         public function getSuppressBit() {
 777                 return Revision::DELETED_RESTRICTED;
 778         }
 779
 780         public function getLogAction() {
 781                 return 'event';
 782         }
 783
 784         public function getLogParams( $params ) {
 785                 return array(
 786                         implode( ',', $params['ids'] ),
 787                         "ofield={$params['oldBits']}",
 788                         "nfield={$params['newBits']}"
 789                 );
 790         }
 791 }
 792
 793 /**
 794  * Item class for a logging table row
 795  */
 796 class RevDel_LogItem extends RevDel_Item {
 797         public function getIdField() {
 798                 return 'log_id';
 799         }
 800
 801         public function getTimestampField() {
 802                 return 'log_timestamp';
 803         }
 804
 805         public function getAuthorIdField() {
 806                 return 'log_user';
 807         }
 808
 809         public function getAuthorNameField() {
 810                 return 'log_user_text';
 811         }
 812
 813         public function canView() {
 814                 return LogEventsList::userCan( $this->row, Revision::DELETED_RESTRICTED, $this->list->getUser() );
 815         }
 816
 817         public function canViewContent() {
 818                 return true; // none
 819         }
 820
 821         public function getBits() {
 822                 return $this->row->log_deleted;
 823         }
 824
 825         public function setBits( $bits ) {
 826                 $dbw = wfGetDB( DB_MASTER );
 827                 $dbw->update( 'recentchanges',
 828                         array(
 829                                 'rc_deleted' => $bits,
 830                                 'rc_patrolled' => 1
 831                         ),
 832                         array(
 833                                 'rc_logid' => $this->row->log_id,
 834                                 'rc_timestamp' => $this->row->log_timestamp // index
 835                         ),
 836                         __METHOD__
 837                 );
 838                 $dbw->update( 'logging',
 839                         array( 'log_deleted' => $bits ),
 840                         array(
 841                                 'log_id' => $this->row->log_id,
 842                                 'log_deleted' => $this->getBits()
 843                         ),
 844                         __METHOD__
 845                 );
 846                 return (bool)$dbw->affectedRows();
 847         }
 848
 849         public function getHTML() {
 850                 $date = htmlspecialchars( $this->list->getLanguage()->timeanddate( $this->row->log_timestamp ) );
 851                 $paramArray = LogPage::extractParams( $this->row->log_params );
 852                 $title = Title::makeTitle( $this->row->log_namespace, $this->row->log_title );
 853
 854                 // Log link for this page
 855                 $loglink = Linker::link(
 856                         SpecialPage::getTitleFor( 'Log' ),
 857                         wfMsgHtml( 'log' ),
 858                         array(),
 859                         array( 'page' => $title->getPrefixedText() )
 860                 );
 861                 // Action text
 862                 if( !$this->canView() ) {
 863                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 864                 } else {
 865                         $skin = $this->list->getUser()->getSkin();
 866                         $action = LogPage::actionText( $this->row->log_type, $this->row->log_action,
 867                                 $title, $skin, $paramArray, true, true );
 868                         if( $this->row->log_deleted & LogPage::DELETED_ACTION )
 869                                 $action = '<span class="history-deleted">' . $action . '</span>';
 870                 }
 871                 // User links
 872                 $userLink = Linker::userLink( $this->row->log_user,
 873                         User::WhoIs( $this->row->log_user ) );
 874                 if( LogEventsList::isDeleted($this->row,LogPage::DELETED_USER) ) {
 875                         $userLink = '<span class="history-deleted">' . $userLink . '</span>';
 876                 }
 877                 // Comment
 878                 $comment = $this->list->getLanguage()->getDirMark() . Linker::commentBlock( $this->row->log_comment );
 879                 if( LogEventsList::isDeleted($this->row,LogPage::DELETED_COMMENT) ) {
 880                         $comment = '<span class="history-deleted">' . $comment . '</span>';
 881                 }
 882                 return "<li>($loglink) $date $userLink $action $comment</li>";
 883         }
 884 }