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