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 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 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 RevDelList RevDelList 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'
 136                         || $request->getVal( 'action' ) == 'revisiondelete'
 137                 ) {
 138                         // For show/hide form submission from history page
 139                         // Since we are access through index.php?title=XXX&action=historysubmit
 140                         // getFullTitle() will contain the target title and not our title
 141                         $this->targetObj = $this->getFullTitle();
 142                         $this->typeName = 'revision';
 143                 } else {
 144                         $this->typeName = $request->getVal( 'type' );
 145                         $this->targetObj = Title::newFromText( $request->getText( 'target' ) );
 146                 }
 147
 148                 # For reviewing deleted files...
 149                 $this->archiveName = $request->getVal( 'file' );
 150                 $this->token = $request->getVal( 'token' );
 151                 if ( $this->archiveName && $this->targetObj ) {
 152                         $this->tryShowFile( $this->archiveName );
 153
 154                         return;
 155                 }
 156
 157                 $this->typeName = RevisionDeleter::getCanonicalTypeName( $this->typeName );
 158
 159                 # No targets?
 160                 if ( !$this->typeName || count( $this->ids ) == 0 ) {
 161                         throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 162                 }
 163                 $this->typeLabels = self::$UILabels[$this->typeName];
 164                 $this->mIsAllowed = $user->isAllowed( RevisionDeleter::getRestriction( $this->typeName ) );
 165
 166                 # Allow the list type to adjust the passed target
 167                 $this->targetObj = RevisionDeleter::suggestTarget(
 168                         $this->typeName,
 169                         $this->targetObj,
 170                         $this->ids
 171                 );
 172
 173                 $this->otherReason = $request->getVal( 'wpReason' );
 174                 # We need a target page!
 175                 if ( is_null( $this->targetObj ) ) {
 176                         $output->addWikiMsg( 'undelete-header' );
 177
 178                         return;
 179                 }
 180                 # Give a link to the logs/hist for this page
 181                 $this->showConvenienceLinks();
 182
 183                 # Initialise checkboxes
 184                 $this->checks = array(
 185                         # Messages: revdelete-hide-text, revdelete-hide-image, revdelete-hide-name
 186                         array( $this->typeLabels['check-label'], 'wpHidePrimary',
 187                                 RevisionDeleter::getRevdelConstant( $this->typeName )
 188                         ),
 189                         array( 'revdelete-hide-comment', 'wpHideComment', Revision::DELETED_COMMENT ),
 190                         array( 'revdelete-hide-user', 'wpHideUser', Revision::DELETED_USER )
 191                 );
 192                 if ( $user->isAllowed( 'suppressrevision' ) ) {
 193                         $this->checks[] = array( 'revdelete-hide-restricted',
 194                                 'wpHideRestricted', Revision::DELETED_RESTRICTED );
 195                 }
 196
 197                 # Either submit or create our form
 198                 if ( $this->mIsAllowed && $this->submitClicked ) {
 199                         $this->submit( $request );
 200                 } else {
 201                         $this->showForm();
 202                 }
 203
 204                 $qc = $this->getLogQueryCond();
 205                 # Show relevant lines from the deletion log
 206                 $deleteLogPage = new LogPage( 'delete' );
 207                 $output->addHTML( "<h2>" . $deleteLogPage->getName()->escaped() . "</h2>\n" );
 208                 LogEventsList::showLogExtract(
 209                         $output,
 210                         'delete',
 211                         $this->targetObj,
 212                         '', /* user */
 213                         array( 'lim' => 25, 'conds' => $qc, 'useMaster' => $this->wasSaved )
 214                 );
 215                 # Show relevant lines from the suppression log
 216                 if ( $user->isAllowed( 'suppressionlog' ) ) {
 217                         $suppressLogPage = new LogPage( 'suppress' );
 218                         $output->addHTML( "<h2>" . $suppressLogPage->getName()->escaped() . "</h2>\n" );
 219                         LogEventsList::showLogExtract(
 220                                 $output,
 221                                 'suppress',
 222                                 $this->targetObj,
 223                                 '',
 224                                 array( 'lim' => 25, 'conds' => $qc, 'useMaster' => $this->wasSaved )
 225                         );
 226                 }
 227         }
 228
 229         /**
 230          * Show some useful links in the subtitle
 231          */
 232         protected function showConvenienceLinks() {
 233                 # Give a link to the logs/hist for this page
 234                 if ( $this->targetObj ) {
 235                         // Also set header tabs to be for the target.
 236                         $this->getSkin()->setRelevantTitle( $this->targetObj );
 237
 238                         $links = array();
 239                         $links[] = Linker::linkKnown(
 240                                 SpecialPage::getTitleFor( 'Log' ),
 241                                 $this->msg( 'viewpagelogs' )->escaped(),
 242                                 array(),
 243                                 array( 'page' => $this->targetObj->getPrefixedText() )
 244                         );
 245                         if ( !$this->targetObj->isSpecialPage() ) {
 246                                 # Give a link to the page history
 247                                 $links[] = Linker::linkKnown(
 248                                         $this->targetObj,
 249                                         $this->msg( 'pagehist' )->escaped(),
 250                                         array(),
 251                                         array( 'action' => 'history' )
 252                                 );
 253                                 # Link to deleted edits
 254                                 if ( $this->getUser()->isAllowed( 'undelete' ) ) {
 255                                         $undelete = SpecialPage::getTitleFor( 'Undelete' );
 256                                         $links[] = Linker::linkKnown(
 257                                                 $undelete,
 258                                                 $this->msg( 'deletedhist' )->escaped(),
 259                                                 array(),
 260                                                 array( 'target' => $this->targetObj->getPrefixedDBkey() )
 261                                         );
 262                                 }
 263                         }
 264                         # Logs themselves don't have histories or archived revisions
 265                         $this->getOutput()->addSubtitle( $this->getLanguage()->pipeList( $links ) );
 266                 }
 267         }
 268
 269         /**
 270          * Get the condition used for fetching log snippets
 271          * @return array
 272          */
 273         protected function getLogQueryCond() {
 274                 $conds = array();
 275                 // Revision delete logs for these item
 276                 $conds['log_type'] = array( 'delete', 'suppress' );
 277                 $conds['log_action'] = $this->getList()->getLogAction();
 278                 $conds['ls_field'] = RevisionDeleter::getRelationType( $this->typeName );
 279                 $conds['ls_value'] = $this->ids;
 280
 281                 return $conds;
 282         }
 283
 284         /**
 285          * Show a deleted file version requested by the visitor.
 286          * @todo Mostly copied from Special:Undelete. Refactor.
 287          * @param string $archiveName
 288          */
 289         protected function tryShowFile( $archiveName ) {
 290                 $repo = RepoGroup::singleton()->getLocalRepo();
 291                 $oimage = $repo->newFromArchiveName( $this->targetObj, $archiveName );
 292                 $oimage->load();
 293                 // Check if user is allowed to see this file
 294                 if ( !$oimage->exists() ) {
 295                         $this->getOutput()->addWikiMsg( 'revdelete-no-file' );
 296
 297                         return;
 298                 }
 299                 $user = $this->getUser();
 300                 if ( !$oimage->userCan( File::DELETED_FILE, $user ) ) {
 301                         if ( $oimage->isDeleted( File::DELETED_RESTRICTED ) ) {
 302                                 throw new PermissionsError( 'suppressrevision' );
 303                         } else {
 304                                 throw new PermissionsError( 'deletedtext' );
 305                         }
 306                 }
 307                 if ( !$user->matchEditToken( $this->token, $archiveName ) ) {
 308                         $lang = $this->getLanguage();
 309                         $this->getOutput()->addWikiMsg( 'revdelete-show-file-confirm',
 310                                 $this->targetObj->getText(),
 311                                 $lang->userDate( $oimage->getTimestamp(), $user ),
 312                                 $lang->userTime( $oimage->getTimestamp(), $user ) );
 313                         $this->getOutput()->addHTML(
 314                                 Xml::openElement( 'form', array(
 315                                         'method' => 'POST',
 316                                         'action' => $this->getPageTitle()->getLocalURL( array(
 317                                                         'target' => $this->targetObj->getPrefixedDBkey(),
 318                                                         'file' => $archiveName,
 319                                                         'token' => $user->getEditToken( $archiveName ),
 320                                                 ) )
 321                                         )
 322                                 ) .
 323                                 Xml::submitButton( $this->msg( 'revdelete-show-file-submit' )->text() ) .
 324                                 '</form>'
 325                         );
 326
 327                         return;
 328                 }
 329                 $this->getOutput()->disable();
 330                 # We mustn't allow the output to be Squid cached, otherwise
 331                 # if an admin previews a deleted image, and it's cached, then
 332                 # a user without appropriate permissions can toddle off and
 333                 # nab the image, and Squid will serve it
 334                 $this->getRequest()->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
 335                 $this->getRequest()->response()->header(
 336                         'Cache-Control: no-cache, no-store, max-age=0, must-revalidate'
 337                 );
 338                 $this->getRequest()->response()->header( 'Pragma: no-cache' );
 339
 340                 $key = $oimage->getStorageKey();
 341                 $path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
 342                 $repo->streamFile( $path );
 343         }
 344
 345         /**
 346          * Get the list object for this request
 347          * @return RevDelList
 348          */
 349         protected function getList() {
 350                 if ( is_null( $this->revDelList ) ) {
 351                         $this->revDelList = RevisionDeleter::createList(
 352                                 $this->typeName, $this->getContext(), $this->targetObj, $this->ids
 353                         );
 354                 }
 355
 356                 return $this->revDelList;
 357         }
 358
 359         /**
 360          * Show a list of items that we will operate on, and show a form with checkboxes
 361          * which will allow the user to choose new visibility settings.
 362          */
 363         protected function showForm() {
 364                 $userAllowed = true;
 365
 366                 // Messages: revdelete-selected-text, revdelete-selected-file, logdelete-selected
 367                 $this->getOutput()->wrapWikiMsg( "<strong>$1</strong>", array( $this->typeLabels['selected'],
 368                         $this->getLanguage()->formatNum( count( $this->ids ) ), $this->targetObj->getPrefixedText() ) );
 369
 370                 $this->getOutput()->addHTML( "<ul>" );
 371
 372                 $numRevisions = 0;
 373                 // Live revisions...
 374                 $list = $this->getList();
 375                 // @codingStandardsIgnoreStart Generic.CodeAnalysis.ForLoopWithTestFunctionCall.NotAllowed
 376                 for ( $list->reset(); $list->current(); $list->next() ) {
 377                         // @codingStandardsIgnoreEnd
 378                         $item = $list->current();
 379
 380                         if ( !$item->canView() ) {
 381                                 if ( !$this->submitClicked ) {
 382                                         throw new PermissionsError( 'suppressrevision' );
 383                                 }
 384                                 $userAllowed = false;
 385                         }
 386
 387                         $numRevisions++;
 388                         $this->getOutput()->addHTML( $item->getHTML() );
 389                 }
 390
 391                 if ( !$numRevisions ) {
 392                         throw new ErrorPageError( 'revdelete-nooldid-title', 'revdelete-nooldid-text' );
 393                 }
 394
 395                 $this->getOutput()->addHTML( "</ul>" );
 396                 // Explanation text
 397                 $this->addUsageText();
 398
 399                 // Normal sysops can always see what they did, but can't always change it
 400                 if ( !$userAllowed ) {
 401                         return;
 402                 }
 403
 404                 // Show form if the user can submit
 405                 if ( $this->mIsAllowed ) {
 406                         $out = Xml::openElement( 'form', array( 'method' => 'post',
 407                                         'action' => $this->getPageTitle()->getLocalURL( array( 'action' => 'submit' ) ),
 408                                         'id' => 'mw-revdel-form-revisions' ) ) .
 409                                 Xml::fieldset( $this->msg( 'revdelete-legend' )->text() ) .
 410                                 $this->buildCheckBoxes() .
 411                                 Xml::openElement( 'table' ) .
 412                                 "<tr>\n" .
 413                                         '<td class="mw-label">' .
 414                                                 Xml::label( $this->msg( 'revdelete-log' )->text(), 'wpRevDeleteReasonList' ) .
 415                                         '</td>' .
 416                                         '<td class="mw-input">' .
 417                                                 Xml::listDropDown( 'wpRevDeleteReasonList',
 418                                                         $this->msg( 'revdelete-reason-dropdown' )->inContentLanguage()->text(),
 419                                                         $this->msg( 'revdelete-reasonotherlist' )->inContentLanguage()->text(),
 420                                                         $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' ), 'wpReasonDropDown'
 421                                                 ) .
 422                                         '</td>' .
 423                                 "</tr><tr>\n" .
 424                                         '<td class="mw-label">' .
 425                                                 Xml::label( $this->msg( 'revdelete-otherreason' )->text(), 'wpReason' ) .
 426                                         '</td>' .
 427                                         '<td class="mw-input">' .
 428                                                 Xml::input(
 429                                                         'wpReason',
 430                                                         60,
 431                                                         $this->otherReason,
 432                                                         array( 'id' => 'wpReason', 'maxlength' => 100 )
 433                                                 ) .
 434                                         '</td>' .
 435                                 "</tr><tr>\n" .
 436                                         '<td></td>' .
 437                                         '<td class="mw-submit">' .
 438                                                 Xml::submitButton( $this->msg( 'revdelete-submit', $numRevisions )->text(),
 439                                                         array( 'name' => 'wpSubmit' ) ) .
 440                                         '</td>' .
 441                                 "</tr>\n" .
 442                                 Xml::closeElement( 'table' ) .
 443                                 Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() ) .
 444                                 Html::hidden( 'target', $this->targetObj->getPrefixedText() ) .
 445                                 Html::hidden( 'type', $this->typeName ) .
 446                                 Html::hidden( 'ids', implode( ',', $this->ids ) ) .
 447                                 Xml::closeElement( 'fieldset' ) . "\n";
 448                 } else {
 449                         $out = '';
 450                 }
 451                 if ( $this->mIsAllowed ) {
 452                         $out .= Xml::closeElement( 'form' ) . "\n";
 453                         // Show link to edit the dropdown reasons
 454                         if ( $this->getUser()->isAllowed( 'editinterface' ) ) {
 455                                 $title = Title::makeTitle( NS_MEDIAWIKI, 'Revdelete-reason-dropdown' );
 456                                 $link = Linker::link(
 457                                         $title,
 458                                         $this->msg( 'revdelete-edit-reasonlist' )->escaped(),
 459                                         array(),
 460                                         array( 'action' => 'edit' )
 461                                 );
 462                                 $out .= Xml::tags( 'p', array( 'class' => 'mw-revdel-editreasons' ), $link ) . "\n";
 463                         }
 464                 }
 465                 $this->getOutput()->addHTML( $out );
 466         }
 467
 468         /**
 469          * Show some introductory text
 470          * @todo FIXME: Wikimedia-specific policy text
 471          */
 472         protected function addUsageText() {
 473                 // Messages: revdelete-text-text, revdelete-text-file, logdelete-text
 474                 $this->getOutput()->wrapWikiMsg(
 475                         "<strong>$1</strong>\n$2", $this->typeLabels['text'],
 476                         'revdelete-text-others'
 477                 );
 478
 479                 if ( $this->getUser()->isAllowed( 'suppressrevision' ) ) {
 480                         $this->getOutput()->addWikiMsg( 'revdelete-suppress-text' );
 481                 }
 482
 483                 if ( $this->mIsAllowed ) {
 484                         $this->getOutput()->addWikiMsg( 'revdelete-confirm' );
 485                 }
 486         }
 487
 488         /**
 489          * @return string HTML
 490          */
 491         protected function buildCheckBoxes() {
 492                 $html = '<table>';
 493                 // If there is just one item, use checkboxes
 494                 $list = $this->getList();
 495                 if ( $list->length() == 1 ) {
 496                         $list->reset();
 497                         $bitfield = $list->current()->getBits(); // existing field
 498
 499                         if ( $this->submitClicked ) {
 500                                 $bitfield = RevisionDeleter::extractBitfield( $this->extractBitParams(), $bitfield );
 501                         }
 502
 503                         foreach ( $this->checks as $item ) {
 504                                 // Messages: revdelete-hide-text, revdelete-hide-image, revdelete-hide-name,
 505                                 // revdelete-hide-comment, revdelete-hide-user, revdelete-hide-restricted
 506                                 list( $message, $name, $field ) = $item;
 507                                 $innerHTML = Xml::checkLabel(
 508                                         $this->msg( $message )->text(),
 509                                         $name,
 510                                         $name,
 511                                         $bitfield & $field
 512                                 );
 513
 514                                 if ( $field == Revision::DELETED_RESTRICTED ) {
 515                                         $innerHTML = "<b>$innerHTML</b>";
 516                                 }
 517
 518                                 $line = Xml::tags( 'td', array( 'class' => 'mw-input' ), $innerHTML );
 519                                 $html .= "<tr>$line</tr>\n";
 520                         }
 521                 } else {
 522                         // Otherwise, use tri-state radios
 523                         $html .= '<tr>';
 524                         $html .= '<th class="mw-revdel-checkbox">'
 525                                 . $this->msg( 'revdelete-radio-same' )->escaped() . '</th>';
 526                         $html .= '<th class="mw-revdel-checkbox">'
 527                                 . $this->msg( 'revdelete-radio-unset' )->escaped() . '</th>';
 528                         $html .= '<th class="mw-revdel-checkbox">'
 529                                 . $this->msg( 'revdelete-radio-set' )->escaped() . '</th>';
 530                         $html .= "<th></th></tr>\n";
 531                         foreach ( $this->checks as $item ) {
 532                                 // Messages: revdelete-hide-text, revdelete-hide-image, revdelete-hide-name,
 533                                 // revdelete-hide-comment, revdelete-hide-user, revdelete-hide-restricted
 534                                 list( $message, $name, $field ) = $item;
 535                                 // If there are several items, use third state by default...
 536                                 if ( $this->submitClicked ) {
 537                                         $selected = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
 538                                 } else {
 539                                         $selected = -1; // use existing field
 540                                 }
 541                                 $line = '<td class="mw-revdel-checkbox">' . Xml::radio( $name, -1, $selected == -1 ) . '</td>';
 542                                 $line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 0, $selected == 0 ) . '</td>';
 543                                 $line .= '<td class="mw-revdel-checkbox">' . Xml::radio( $name, 1, $selected == 1 ) . '</td>';
 544                                 $label = $this->msg( $message )->escaped();
 545                                 if ( $field == Revision::DELETED_RESTRICTED ) {
 546                                         $label = "<b>$label</b>";
 547                                 }
 548                                 $line .= "<td>$label</td>";
 549                                 $html .= "<tr>$line</tr>\n";
 550                         }
 551                 }
 552
 553                 $html .= '</table>';
 554
 555                 return $html;
 556         }
 557
 558         /**
 559          * UI entry point for form submission.
 560          * @throws PermissionsError
 561          * @return bool
 562          */
 563         protected function submit() {
 564                 # Check edit token on submission
 565                 $token = $this->getRequest()->getVal( 'wpEditToken' );
 566                 if ( $this->submitClicked && !$this->getUser()->matchEditToken( $token ) ) {
 567                         $this->getOutput()->addWikiMsg( 'sessionfailure' );
 568
 569                         return false;
 570                 }
 571                 $bitParams = $this->extractBitParams();
 572                 // from dropdown
 573                 $listReason = $this->getRequest()->getText( 'wpRevDeleteReasonList', 'other' );
 574                 $comment = $listReason;
 575                 if ( $comment === 'other' ) {
 576                         $comment = $this->otherReason;
 577                 } elseif ( $this->otherReason !== '' ) {
 578                         // Entry from drop down menu + additional comment
 579                         $comment .= $this->msg( 'colon-separator' )->inContentLanguage()->text()
 580                                 . $this->otherReason;
 581                 }
 582                 # Can the user set this field?
 583                 if ( $bitParams[Revision::DELETED_RESTRICTED] == 1
 584                         && !$this->getUser()->isAllowed( 'suppressrevision' )
 585                 ) {
 586                         throw new PermissionsError( 'suppressrevision' );
 587                 }
 588                 # If the save went through, go to success message...
 589                 $status = $this->save( $bitParams, $comment, $this->targetObj );
 590                 if ( $status->isGood() ) {
 591                         $this->success();
 592
 593                         return true;
 594                 } else {
 595                         # ...otherwise, bounce back to form...
 596                         $this->failure( $status );
 597                 }
 598
 599                 return false;
 600         }
 601
 602         /**
 603          * Report that the submit operation succeeded
 604          */
 605         protected function success() {
 606                 // Messages: revdelete-success, logdelete-success
 607                 $this->getOutput()->setPageTitle( $this->msg( 'actioncomplete' ) );
 608                 $this->getOutput()->wrapWikiMsg(
 609                         "<span class=\"success\">\n$1\n</span>",
 610                         $this->typeLabels['success']
 611                 );
 612                 $this->wasSaved = true;
 613                 $this->revDelList->reloadFromMaster();
 614                 $this->showForm();
 615         }
 616
 617         /**
 618          * Report that the submit operation failed
 619          */
 620         protected function failure( $status ) {
 621                 // Messages: revdelete-failure, logdelete-failure
 622                 $this->getOutput()->setPageTitle( $this->msg( 'actionfailed' ) );
 623                 $this->getOutput()->addWikiText( $status->getWikiText( $this->typeLabels['failure'] ) );
 624                 $this->showForm();
 625         }
 626
 627         /**
 628          * Put together an array that contains -1, 0, or the *_deleted const for each bit
 629          *
 630          * @return array
 631          */
 632         protected function extractBitParams() {
 633                 $bitfield = array();
 634                 foreach ( $this->checks as $item ) {
 635                         list( /* message */, $name, $field ) = $item;
 636                         $val = $this->getRequest()->getInt( $name, 0 /* unchecked */ );
 637                         if ( $val < -1 || $val > 1 ) {
 638                                 $val = -1; // -1 for existing value
 639                         }
 640                         $bitfield[$field] = $val;
 641                 }
 642                 if ( !isset( $bitfield[Revision::DELETED_RESTRICTED] ) ) {
 643                         $bitfield[Revision::DELETED_RESTRICTED] = 0;
 644                 }
 645
 646                 return $bitfield;
 647         }
 648
 649         /**
 650          * Do the write operations. Simple wrapper for RevDel*List::setVisibility().
 651          * @param int $bitfield
 652          * @param string $reason
 653          * @param Title $title
 654          * @return Status
 655          */
 656         protected function save( $bitfield, $reason, $title ) {
 657                 return $this->getList()->setVisibility(
 658                         array( 'value' => $bitfield, 'comment' => $reason )
 659                 );
 660         }
 661
 662         protected function getGroupName() {
 663                 return 'pagetools';
 664         }
 665 }