includes/specials/SpecialRevisiondelete.php

   1 <?php
   2 /**
   3  * Implements Special:Revisiondelete
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Special page allowing users with the appropriate permissions to view
  26  * and hide revisions. Log items can also be hidden.
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class SpecialRevisionDelete extends UnlistedSpecialPage {
  31         /** @var bool Was the DB modified in this request */
  32         protected $wasSaved = false;
  33
  34         /** @var bool True if the submit button was clicked, and the form was posted */
  35         private $submitClicked;
  36
  37         /** @var array Target ID list */
  38         private $ids;
  39
  40         /** @var string Archive name, for reviewing deleted files */
  41         private $archiveName;
  42
  43         /** @var string Edit token for securing image views against XSS */
  44         private $token;
  45
  46         /** @var Title object for target parameter */
  47         private $targetObj;
  48
  49         /** @var string Deletion type, may be revision, archive, oldimage, filearchive, logging. */
  50         private $typeName;
  51
  52         /** @var array of checkbox specs (message, name, deletion bits) */
  53         private $checks;
  54
  55         /** @var array UI Labels about the current type */
  56         private $typeLabels;
  57
  58         /** @var RevDel_List object, storing the list of items to be deleted/undeleted */
  59         private $revDelList;
  60
  61         /** @var bool Whether user is allowed to perform the action */
  62         private $mIsAllowed;
  63
  64         /** @var string */
  65         private $otherReason;
  66
  67         /**
  68          * UI labels for each type.
  69          */
  70         private static $UILabels = array(
  71                 'revision' => array(
  72                         'check-label' => 'revdelete-hide-text',
  73                         'success' => 'revdelete-success',
  74                         'failure' => 'revdelete-failure',
  75                         'text' => 'revdelete-text-text',
  76                         'selected'=> 'revdelete-selected-text',
  77                 ),
  78                 'archive' => array(
  79                         'check-label' => 'revdelete-hide-text',
  80                         'success' => 'revdelete-success',
  81                         'failure' => 'revdelete-failure',
  82                         'text' => 'revdelete-text-text',
  83                         'selected'=> 'revdelete-selected-text',
  84                 ),
  85                 'oldimage' => array(
  86                         'check-label' => 'revdelete-hide-image',
  87                         'success' => 'revdelete-success',
  88                         'failure' => 'revdelete-failure',
  89                         'text' => 'revdelete-text-file',
  90                         'selected'=> 'revdelete-selected-file',
  91                 ),
  92                 'filearchive' => array(
  93                         'check-label' => 'revdelete-hide-image',
  94                         'success' => 'revdelete-success',
  95                         'failure' => 'revdelete-failure',
  96                         'text' => 'revdelete-text-file',
  97                         'selected'=> 'revdelete-selected-file',
  98                 ),
  99                 'logging' => array(
 100                         'check-label' => 'revdelete-hide-name',
 101                         'success' => 'logdelete-success',
 102                         'failure' => 'logdelete-failure',
 103                         'text' => 'logdelete-text',
 104                         'selected' => 'logdelete-selected',
 105                 ),
 106         );
 107
 108         public function __construct() {
 109                 parent::__construct( 'Revisiondelete', 'deletedhistory' );
 110         }
 111
 112         public function execute( $par ) {
 113                 $this->checkPermissions();
 114                 $this->checkReadOnly();
 115
 116                 $output = $this->getOutput();
 117                 $user = $this->getUser();
 118
 119                 $this->setHeaders();
 120                 $this->outputHeader();
 121                 $request = $this->getRequest();
 122                 $this->submitClicked = $request->wasPosted() && $request->getBool( 'wpSubmit' );
 123                 # Handle our many different possible input types.
 124                 $ids = $request->getVal( 'ids' );
 125                 if ( !is_null( $ids ) ) {
 126                         # Allow CSV, for backwards compatibility, or a single ID for show/hide links
 127                         $this->ids = explode( ',', $ids );
 128                 } else {
 129                         # Array input
 130                         $this->ids = array_keys( $request->getArray( 'ids', array() ) );
 131                 }
 132                 // $this->ids = array_map( 'intval', $this->ids );
 133                 $this->ids = array_unique( array_filter( $this->ids ) );
 134
 135                 if ( $request->getVal( 'action' ) == 'historysubmit' || $request->getVal( 'action' ) == 'revisiondelete' ) {
 136                         // For show/hide form submission from history page
 137                         // Since we are access through index.php?title=XXX&action=historysubmit
 138                         // getFullTitle() will contain the target title and not our title
 139                         $this->targetObj = $this->getFullTitle();
 140                         $this->typeName = 'revision';
 141                 } else {
 142                         $this->typeName = $request->getVal( 'type' );
 143                         $this->targetObj = Title::newFromText( $request->getText( 'target' ) );
 144                 }
 145
 146                 # For reviewing deleted files...
 147                 $this->archiveName = $request->getVal( 'file' );
 148                 $this->token = $request->getVal( 'token' );
 149                 if ( $this->archiveName && $this->targetObj ) {
 150                         $this->tryShowFile( $this->archiveName );
 151
 152                         return;
 153                 }
 154
 155                 $this->typeName = RevisionDeleter::getCanonicalTypeName( $this->typeName );
 156
 157                 # No targets?
 158                 if ( !$this->typeName || count( $this->ids ) == 0 ) {
 159                         throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 160                 }
 161                 $this->typeLabels = self::$UILabels[$this->typeName];
 162                 $this->mIsAllowed = $user->isAllowed( RevisionDeleter::getRestriction( $this->typeName ) );
 163
 164                 # Allow the list type to adjust the passed target
 165                 $this->targetObj = RevisionDeleter::suggestTarget( $this->typeName, $this->targetObj, $this->ids );
 166
 167                 $this->otherReason = $request->getVal( 'wpReason' );
 168                 # We need a target page!
 169                 if ( is_null( $this->targetObj ) ) {
 170                         $output->addWikiMsg( 'undelete-header' );
 171
 172                         return;
 173                 }
 174                 # Give a link to the logs/hist for this page
 175                 $this->showConvenienceLinks();
 176
 177                 # Initialise checkboxes
 178                 $this->checks = array(
 179                         array( $this->typeLabels['check-label'], 'wpHidePrimary',
 180                                 RevisionDeleter::getRevdelConstant( $this->typeName )
 181                         ),
 182                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 183                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 184                 );
 185                 if ( $user->isAllowed( 'suppressrevision' ) ) {
 186                         $this->checks[] = array( 'revdelete-hide-restricted',
 187                                 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 188                 }
 189
 190                 # Either submit or create our form
 191                 if ( $this->mIsAllowed && $this->submitClicked ) {
 192                         $this->submit( $request );
 193                 } else {
 194                         $this->showForm();
 195                 }
 196
 197                 $qc = $this->getLogQueryCond();
 198                 # Show relevant lines from the deletion log
 199                 $deleteLogPage = new LogPage( 'delete' );
 200                 $output->addHTML( "<h2>" . $deleteLogPage->getName()->escaped() . "</h2>\n" );
 201                 LogEventsList::showLogExtract(
 202                         $output,
 203                         'delete',
 204                         $this->targetObj,
 205                         '', /* user */
 206                         array( 'lim' => 25, 'conds' => $qc, 'useMaster' => $this->wasSaved )
 207                 );
 208                 # Show relevant lines from the suppression log
 209                 if ( $user->isAllowed( 'suppressionlog' ) ) {
 210                         $suppressLogPage = new LogPage( 'suppress' );
 211                         $output->addHTML( "<h2>" . $suppressLogPage->getName()->escaped() . "</h2>\n" );
 212                         LogEventsList::showLogExtract(
 213                                 $output,
 214                                 'suppress',
 215                                 $this->targetObj,
 216                                 '',
 217                                 array( 'lim' => 25, 'conds' => $qc, 'useMaster' => $this->wasSaved )
 218                         );
 219                 }
 220         }
 221
 222         /**
 223          * Show some useful links in the subtitle
 224          */
 225         protected function showConvenienceLinks() {
 226                 # Give a link to the logs/hist for this page
 227                 if ( $this->targetObj ) {
 228                         // Also set header tabs to be for the target.
 229                         $this->getSkin()->setRelevantTitle( $this->targetObj );
 230
 231                         $links = array();
 232                         $links[] = Linker::linkKnown(
 233                                 SpecialPage::getTitleFor( 'Log' ),
 234                                 $this->msg( 'viewpagelogs' )->escaped(),
 235                                 array(),
 236                                 array( 'page' => $this->targetObj->getPrefixedText() )
 237                         );
 238                         if ( !$this->targetObj->isSpecialPage() ) {
 239                                 # Give a link to the page history
 240                                 $links[] = Linker::linkKnown(
 241                                         $this->targetObj,
 242                                         $this->msg( 'pagehist' )->escaped(),
 243                                         array(),
 244                                         array( 'action' => 'history' )
 245                                 );
 246                                 # Link to deleted edits
 247                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 248                                         $undelete = SpecialPage::getTitleFor( 'Undelete' );
 249                                         $links[] = Linker::linkKnown(
 250                                                 $undelete,
 251                                                 $this->msg( 'deletedhist' )->escaped(),
 252                                                 array(),
 253                                                 array( 'target' => $this->targetObj->getPrefixedDBkey() )
 254                                         );
 255                                 }
 256                         }
 257                         # Logs themselves don't have histories or archived revisions
 258                         $this->getOutput()->addSubtitle( $this->getLanguage()->pipeList( $links ) );
 259                 }
 260         }
 261
 262         /**
 263          * Get the condition used for fetching log snippets
 264          * @return array
 265          */
 266         protected function getLogQueryCond() {
 267                 $conds = array();
 268                 // Revision delete logs for these item
 269                 $conds['log_type'] = array( 'delete', 'suppress' );
 270                 $conds['log_action'] = $this->getList()->getLogAction();
 271                 $conds['ls_field'] = RevisionDeleter::getRelationType( $this->typeName );
 272                 $conds['ls_value'] = $this->ids;
 273
 274                 return $conds;
 275         }
 276
 277         /**
 278          * Show a deleted file version requested by the visitor.
 279          * TODO Mostly copied from Special:Undelete. Refactor.
 280          */
 281         protected function tryShowFile( $archiveName ) {
 282                 $repo = RepoGroup::singleton()->getLocalRepo();
 283                 $oimage = $repo->newFromArchiveName( $this->targetObj, $archiveName );
 284                 $oimage->load();
 285                 // Check if user is allowed to see this file
 286                 if ( !$oimage->exists() ) {
 287                         $this->getOutput()->addWikiMsg( 'revdelete-no-file' );
 288
 289                         return;
 290                 }
 291                 $user = $this->getUser();
 292                 if ( !$oimage->userCan( File::DELETED_FILE, $user ) ) {
 293                         if ( $oimage->isDeleted( File::DELETED_RESTRICTED ) ) {
 294                                 throw new PermissionsError( 'suppressrevision' );
 295                         } else {
 296                                 throw new PermissionsError( 'deletedtext' );
 297                         }
 298                 }
 299                 if ( !$user->matchEditToken( $this->token, $archiveName ) ) {
 300                         $lang = $this->getLanguage();
 301                         $this->getOutput()->addWikiMsg( 'revdelete-show-file-confirm',
 302                                 $this->targetObj->getText(),
 303                                 $lang->userDate( $oimage->getTimestamp(), $user ),
 304                                 $lang->userTime( $oimage->getTimestamp(), $user ) );
 305                         $this->getOutput()->addHTML(
 306                                 Xml::openElement( 'form', array(
 307                                         'method' => 'POST',
 308                                         'action' => $this->getPageTitle()->getLocalURL( array(
 309                                                         'target' => $this->targetObj->getPrefixedDBkey(),
 310                                                         'file' => $archiveName,
 311                                                         'token' => $user->getEditToken( $archiveName ),
 312                                                 ) )
 313                                         )
 314                                 ) .
 315                                 Xml::submitButton( $this->msg( 'revdelete-show-file-submit' )->text() ) .
 316                                 '</form>'
 317                         );
 318
 319                         return;
 320                 }
 321                 $this->getOutput()->disable();
 322                 # We mustn't allow the output to be Squid cached, otherwise
 323                 # if an admin previews a deleted image, and it's cached, then
 324                 # a user without appropriate permissions can toddle off and
 325                 # nab the image, and Squid will serve it
 326                 $this->getRequest()->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 327                 $this->getRequest()->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
 328                 $this->getRequest()->response()->header( 'Pragma: no-cache' );
 329
 330                 $key = $oimage->getStorageKey();
 331                 $path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
 332                 $repo->streamFile( $path );
 333         }
 334
 335         /**
 336          * Get the list object for this request
 337          */
 338         protected function getList() {
 339                 if ( is_null( $this->revDelList ) ) {
 340                         $this->revDelList = RevisionDeleter::createList(
 341                                 $this->typeName, $this->getContext(), $this->targetObj, $this->ids
 342                         );
 343                 }
 344
 345                 return $this->revDelList;
 346         }
 347
 348         /**
 349          * Show a list of items that we will operate on, and show a form with checkboxes
 350          * which will allow the user to choose new visibility settings.
 351          */
 352         protected function showForm() {
 353                 $userAllowed = true;
 354
 355                 $this->getOutput()->wrapWikiMsg( "<strong>$1</strong>", array( $this->typeLabels['selected'],
 356                         $this->getLanguage()->formatNum( count( $this->ids ) ), $this->targetObj->getPrefixedText() ) );
 357
 358                 $this->getOutput()->addHTML( "<ul>" );
 359
 360                 $numRevisions = 0;
 361                 // Live revisions...
 362                 $list = $this->getList();
 363                 for ( $list->reset(); $list->current(); $list->next() ) {
 364                         $item = $list->current();
 365                         if ( !$item->canView() ) {
 366                                 if ( !$this->submitClicked ) {
 367                                         throw new PermissionsError( 'suppressrevision' );
 368                                 }
 369                                 $userAllowed = false;
 370                         }
 371                         $numRevisions++;
 372                         $this->getOutput()->addHTML( $item->getHTML() );
 373                 }
 374
 375                 if ( !$numRevisions ) {
 376                         throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 377                 }
 378
 379                 $this->getOutput()->addHTML( "</ul>" );
 380                 // Explanation text
 381                 $this->addUsageText();
 382
 383                 // Normal sysops can always see what they did, but can't always change it
 384                 if ( !$userAllowed ) {
 385                         return;
 386                 }
 387
 388                 // Show form if the user can submit
 389                 if ( $this->mIsAllowed ) {
 390                         $out = Xml::openElement( 'form', array( 'method' => 'post',
 391                                         'action' => $this->getPageTitle()->getLocalURL( array( 'action' => 'submit' ) ),
 392                                         'id' => 'mw-revdel-form-revisions' ) ) .
 393                                 Xml::fieldset( $this->msg( 'revdelete-legend' )->text() ) .
 394                                 $this->buildCheckBoxes() .
 395                                 Xml::openElement( 'table' ) .
 396                                 "<tr>\n" .
 397                                         '<td class="mw-label">' .
 398                                                 Xml::label( $this->msg( 'revdelete-log' )->text(), 'wpRevDeleteReasonList' ) .
 399                                         '</td>' .
 400                                         '<td class="mw-input">' .
 401                                                 Xml::listDropDown( 'wpRevDeleteReasonList',
 402                                                         $this->msg( 'revdelete-reason-dropdown' )->inContentLanguage()->text(),
 403                                                         $this->msg( 'revdelete-reasonotherlist' )->inContentLanguage()->text(),
 404                                                         $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' ), 'wpReasonDropDown', 1
 405                                                 ) .
 406                                         '</td>' .
 407                                 "</tr><tr>\n" .
 408                                         '<td class="mw-label">' .
 409                                                 Xml::label( $this->msg( 'revdelete-otherreason' )->text(), 'wpReason' ) .
 410                                         '</td>' .
 411                                         '<td class="mw-input">' .
 412                                                 Xml::input( 'wpReason', 60, $this->otherReason, array( 'id' => 'wpReason', 'maxlength' => 100 ) ) .
 413                                         '</td>' .
 414                                 "</tr><tr>\n" .
 415                                         '<td></td>' .
 416                                         '<td class="mw-submit">' .
 417                                                 Xml::submitButton( $this->msg( 'revdelete-submit', $numRevisions )->text(),
 418                                                         array( 'name' => 'wpSubmit' ) ) .
 419                                         '</td>' .
 420                                 "</tr>\n" .
 421                                 Xml::closeElement( 'table' ) .
 422                                 Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() ) .
 423                                 Html::hidden( 'target', $this->targetObj->getPrefixedText() ) .
 424                                 Html::hidden( 'type', $this->typeName ) .
 425                                 Html::hidden( 'ids', implode( ',', $this->ids ) ) .
 426                                 Xml::closeElement( 'fieldset' ) . "\n";
 427                 } else {
 428                         $out = '';
 429                 }
 430                 if ( $this->mIsAllowed ) {
 431                         $out .= Xml::closeElement( 'form' ) . "\n";
 432                         // Show link to edit the dropdown reasons
 433                         if ( $this->getUser()->isAllowed( 'editinterface' ) ) {
 434                                 $title = Title::makeTitle( NS_MEDIAWIKI, 'Revdelete-reason-dropdown' );
 435                                 $link = Linker::link(
 436                                         $title,
 437                                         $this->msg( 'revdelete-edit-reasonlist' )->escaped(),
 438                                         array(),
 439                                         array( 'action' => 'edit' )
 440                                 );
 441                                 $out .= Xml::tags( 'p', array( 'class' => 'mw-revdel-editreasons' ), $link ) . "\n";
 442                         }
 443                 }
 444                 $this->getOutput()->addHTML( $out );
 445         }
 446
 447         /**
 448          * Show some introductory text
 449          * @todo FIXME: Wikimedia-specific policy text
 450          */
 451         protected function addUsageText() {
 452                 $this->getOutput()->wrapWikiMsg( "<strong>$1</strong>\n$2", $this->typeLabels['text'], 'revdelete-text-others' );
 453                 if ( $this->getUser()->isAllowed( 'suppressrevision' ) ) {
 454                         $this->getOutput()->addWikiMsg( 'revdelete-suppress-text' );
 455                 }
 456                 if ( $this->mIsAllowed ) {
 457                         $this->getOutput()->addWikiMsg( 'revdelete-confirm' );
 458                 }
 459         }
 460
 461         /**
 462          * @return String: HTML
 463          */
 464         protected function buildCheckBoxes() {
 465                 $html = '<table>';
 466                 // If there is just one item, use checkboxes
 467                 $list = $this->getList();
 468                 if ( $list->length() == 1 ) {
 469                         $list->reset();
 470                         $bitfield = $list->current()->getBits(); // existing field
 471                         if ( $this->submitClicked ) {
 472                                 $bitfield = RevisionDeleter::extractBitfield( $this->extractBitParams(), $bitfield );
 473                         }
 474                         foreach ( $this->checks as $item ) {
 475                                 list( $message, $name, $field ) = $item;
 476                                 $innerHTML = Xml::checkLabel( $this->msg( $message )->text(), $name, $name, $bitfield & $field );
 477                                 if ( $field == Revision::DELETED_RESTRICTED ) {
 478                                         $innerHTML = "<b>$innerHTML</b>";
 479                                 }
 480                                 $line = Xml::tags( 'td', array( 'class' => 'mw-input' ), $innerHTML );
 481                                 $html .= "<tr>$line</tr>\n";
 482                         }
 483                 } else {
 484                         // Otherwise, use tri-state radios
 485                         $html .= '<tr>';
 486                         $html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-same' )->escaped() . '</th>';
 487                         $html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-unset' )->escaped() . '</th>';
 488                         $html .= '<th class="mw-revdel-checkbox">' . $this->msg( 'revdelete-radio-set' )->escaped() . '</th>';
 489                         $html .= "<th></th></tr>\n";
 490                         foreach ( $this->checks as $item ) {
 491                                 list( $message, $name, $field ) = $item;
 492                                 // If there are several items, use third state by default...
 493                                 if ( $this->submitClicked ) {
 494                                         $selected = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
 495                                 } else {
 496                                         $selected = -1; // use existing field
 497                                 }
 498                                 $line = '<td class="mw-revdel-checkbox">' . Xml::radio( $name, -1, $selected == -1 ) . '</td>';
 499                                 $line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 0, $selected == 0 ) . '</td>';
 500                                 $line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 1, $selected == 1 ) . '</td>';
 501                                 $label = $this->msg( $message )->escaped();
 502                                 if ( $field == Revision::DELETED_RESTRICTED ) {
 503                                         $label = "<b>$label</b>";
 504                                 }
 505                                 $line .= "<td>$label</td>";
 506                                 $html .= "<tr>$line</tr>\n";
 507                         }
 508                 }
 509
 510                 $html .= '</table>';
 511
 512                 return $html;
 513         }
 514
 515         /**
 516          * UI entry point for form submission.
 517          * @throws PermissionsError
 518          * @return bool
 519          */
 520         protected function submit() {
 521                 # Check edit token on submission
 522                 $token = $this->getRequest()->getVal( 'wpEditToken' );
 523                 if ( $this->submitClicked && !$this->getUser()->matchEditToken( $token ) ) {
 524                         $this->getOutput()->addWikiMsg( 'sessionfailure' );
 525
 526                         return false;
 527                 }
 528                 $bitParams = $this->extractBitParams();
 529                 $listReason = $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' ); // from dropdown
 530                 $comment = $listReason;
 531                 if ( $comment != 'other' && $this->otherReason != '' ) {
 532                         // Entry from drop down menu + additional comment
 533                         $comment .= $this->msg( 'colon-separator' )->inContentLanguage()->text() . $this->otherReason;
 534                 } elseif ( $comment == 'other' ) {
 535                         $comment = $this->otherReason;
 536                 }
 537                 # Can the user set this field?
 538                 if ( $bitParams[Revision::DELETED_RESTRICTED] == 1 && !$this->getUser()->isAllowed( 'suppressrevision' ) ) {
 539                         throw new PermissionsError( 'suppressrevision' );
 540                 }
 541                 # If the save went through, go to success message...
 542                 $status = $this->save( $bitParams, $comment, $this->targetObj );
 543                 if ( $status->isGood() ) {
 544                         $this->success();
 545
 546                         return true;
 547                 } else {
 548                         # ...otherwise, bounce back to form...
 549                         $this->failure( $status );
 550                 }
 551
 552                 return false;
 553         }
 554
 555         /**
 556          * Report that the submit operation succeeded
 557          */
 558         protected function success() {
 559                 $this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) );
 560                 $this->getOutput()->wrapWikiMsg( "<span class=\"success\">\n$1\n</span>", $this->typeLabels['success'] );
 561                 $this->wasSaved = true;
 562                 $this->revDelList->reloadFromMaster();
 563                 $this->showForm();
 564         }
 565
 566         /**
 567          * Report that the submit operation failed
 568          */
 569         protected function failure( $status ) {
 570                 $this->getOutput()->setPageTitle( $this->msg( 'actionfailed' ) );
 571                 $this->getOutput()->addWikiText( $status->getWikiText( $this->typeLabels['failure'] ) );
 572                 $this->showForm();
 573         }
 574
 575         /**
 576          * Put together an array that contains -1, 0, or the *_deleted const for each bit
 577          *
 578          * @return array
 579          */
 580         protected function extractBitParams() {
 581                 $bitfield = array();
 582                 foreach ( $this->checks as $item ) {
 583                         list( /* message */, $name, $field ) = $item;
 584                         $val = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
 585                         if ( $val < -1 || $val > 1 ) {
 586                                 $val = -1; // -1 for existing value
 587                         }
 588                         $bitfield[$field] = $val;
 589                 }
 590                 if ( !isset( $bitfield[Revision::DELETED_RESTRICTED] ) ) {
 591                         $bitfield[Revision::DELETED_RESTRICTED] = 0;
 592                 }
 593
 594                 return $bitfield;
 595         }
 596
 597         /**
 598          * Do the write operations. Simple wrapper for RevDel_*List::setVisibility().
 599          * @param $bitfield
 600          * @param $reason
 601          * @param $title
 602          * @return Status
 603          */
 604         protected function save( $bitfield, $reason, $title ) {
 605                 return $this->getList()->setVisibility(
 606                         array( 'value' => $bitfield, 'comment' => $reason )
 607                 );
 608         }
 609
 610         protected function getGroupName() {
 611                 return 'pagetools';
 612         }
 613 }