includes/specials/SpecialMovepage.php

   1 <?php
   2 /**
   3  * Implements Special:Movepage
   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  * A special page that allows users to change page titles
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class MovePageForm extends UnlistedSpecialPage {
  30         /** @var Title */
  31         protected $oldTitle = null;
  32
  33         /** @var Title */
  34         protected $newTitle;
  35
  36         /** @var string Text input */
  37         protected $reason;
  38
  39         // Checks
  40
  41         /** @var bool */
  42         protected $moveTalk;
  43
  44         /** @var bool */
  45         protected $deleteAndMove;
  46
  47         /** @var bool */
  48         protected $moveSubpages;
  49
  50         /** @var bool */
  51         protected $fixRedirects;
  52
  53         /** @var bool */
  54         protected $leaveRedirect;
  55
  56         /** @var bool */
  57         protected $moveOverShared;
  58
  59         private $watch = false;
  60
  61         public function __construct() {
  62                 parent::__construct( 'Movepage' );
  63         }
  64
  65         public function doesWrites() {
  66                 return true;
  67         }
  68
  69         public function execute( $par ) {
  70                 $this->useTransactionalTimeLimit();
  71
  72                 $this->checkReadOnly();
  73
  74                 $this->setHeaders();
  75                 $this->outputHeader();
  76
  77                 $request = $this->getRequest();
  78                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  79
  80                 // Yes, the use of getVal() and getText() is wanted, see bug 20365
  81
  82                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  83                 $this->oldTitle = Title::newFromText( $oldTitleText );
  84
  85                 if ( !$this->oldTitle ) {
  86                         // Either oldTitle wasn't passed, or newFromText returned null
  87                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  88                 }
  89                 if ( !$this->oldTitle->exists() ) {
  90                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  91                 }
  92
  93                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  94                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  95                 // Backwards compatibility for forms submitting here from other sources
  96                 // which is more common than it should be..
  97                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  98                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  99                         ? Title::newFromText( $newTitleText_bc )
 100                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 101
 102                 $user = $this->getUser();
 103
 104                 # Check rights
 105                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 106                 if ( count( $permErrors ) ) {
 107                         // Auto-block user's IP if the account was "hard" blocked
 108                         DeferredUpdates::addCallableUpdate( function() use ( $user ) {
 109                                 $user->spreadAnyEditBlock();
 110                         } );
 111                         throw new PermissionsError( 'move', $permErrors );
 112                 }
 113
 114                 $def = !$request->wasPosted();
 115
 116                 $this->reason = $request->getText( 'wpReason' );
 117                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 118                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 119                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 120                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
 121                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
 122                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
 123                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 124
 125                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
 126                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 127                 ) {
 128                         $this->doSubmit();
 129                 } else {
 130                         $this->showForm( array() );
 131                 }
 132         }
 133
 134         /**
 135          * Show the form
 136          *
 137          * @param array $err Error messages. Each item is an error message.
 138          *    It may either be a string message name or array message name and
 139          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 140          */
 141         function showForm( $err ) {
 142                 global $wgContLang;
 143
 144                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 145
 146                 $out = $this->getOutput();
 147                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 148                 $out->addModules( 'mediawiki.special.movePage' );
 149                 $out->addModuleStyles( 'mediawiki.special.movePage.styles' );
 150                 $this->addHelpLink( 'Help:Moving a page' );
 151
 152                 if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 153                         $out->wrapWikiMsg(
 154                                 "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 155                                 'moveuserpage-warning'
 156                         );
 157                 } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 158                         $out->wrapWikiMsg(
 159                                 "<div class=\"error mw-movecategorypage-warning\">\n$1\n</div>",
 160                                 'movecategorypage-warning'
 161                         );
 162                 }
 163
 164                 $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 165                         'movepagetext' :
 166                         'movepagetext-noredirectfixer'
 167                 );
 168                 $submitVar = 'wpMove';
 169                 $confirm = false;
 170
 171                 $newTitle = $this->newTitle;
 172
 173                 if ( !$newTitle ) {
 174                         # Show the current title as a default
 175                         # when the form is first opened.
 176                         $newTitle = $this->oldTitle;
 177                 } elseif ( !count( $err ) ) {
 178                         # If a title was supplied, probably from the move log revert
 179                         # link, check for validity. We can then show some diagnostic
 180                         # information and save a click.
 181                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 182                         if ( is_array( $newerr ) ) {
 183                                 $err = $newerr;
 184                         }
 185                 }
 186
 187                 $user = $this->getUser();
 188
 189                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 190                         && $newTitle->quickUserCan( 'delete', $user )
 191                 ) {
 192                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 193                         $submitVar = 'wpDeleteAndMove';
 194                         $confirm = true;
 195                         $err = array();
 196                 }
 197
 198                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 199                         && $user->isAllowed( 'reupload-shared' )
 200                 ) {
 201                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 202                         $submitVar = 'wpMoveOverSharedFile';
 203                         $err = array();
 204                 }
 205
 206                 $oldTalk = $this->oldTitle->getTalkPage();
 207                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 208                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 209
 210                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 211                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 212
 213                 # We also want to be able to move assoc. subpage talk-pages even if base page
 214                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 215                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 216                         ( $oldTalk->exists()
 217                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 218
 219                 $dbr = wfGetDB( DB_SLAVE );
 220                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 221                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 222                                 array(
 223                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 224                                         'rd_title' => $this->oldTitle->getDBkey(),
 225                                 ), __METHOD__ );
 226                 } else {
 227                         $hasRedirects = false;
 228                 }
 229
 230                 if ( count( $err ) ) {
 231                         $out->addHTML( "<div class='error'>\n" );
 232                         $action_desc = $this->msg( 'action-move' )->plain();
 233                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 234
 235                         if ( count( $err ) == 1 ) {
 236                                 $errMsg = $err[0];
 237                                 $errMsgName = array_shift( $errMsg );
 238
 239                                 if ( $errMsgName == 'hookaborted' ) {
 240                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 241                                 } else {
 242                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 243                                 }
 244                         } else {
 245                                 $errStr = array();
 246
 247                                 foreach ( $err as $errMsg ) {
 248                                         if ( $errMsg[0] == 'hookaborted' ) {
 249                                                 $errStr[] = $errMsg[1];
 250                                         } else {
 251                                                 $errMsgName = array_shift( $errMsg );
 252                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 253                                         }
 254                                 }
 255
 256                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 257                         }
 258                         $out->addHTML( "</div>\n" );
 259                 }
 260
 261                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 262                         # Is the title semi-protected?
 263                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 264                                 $noticeMsg = 'semiprotectedpagemovewarning';
 265                                 $classes[] = 'mw-textarea-sprotected';
 266                         } else {
 267                                 # Then it must be protected based on static groups (regular)
 268                                 $noticeMsg = 'protectedpagemovewarning';
 269                                 $classes[] = 'mw-textarea-protected';
 270                         }
 271                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 272                         $out->addWikiMsg( $noticeMsg );
 273                         LogEventsList::showLogExtract(
 274                                 $out,
 275                                 'protect',
 276                                 $this->oldTitle,
 277                                 '',
 278                                 array( 'lim' => 1 )
 279                         );
 280                         $out->addHTML( "</div>\n" );
 281                 }
 282
 283                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 284                 // is enforced in the mediawiki.special.movePage module
 285
 286                 $immovableNamespaces = array();
 287                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 288                         if ( !MWNamespace::isMovable( $nsId ) ) {
 289                                 $immovableNamespaces[] = $nsId;
 290                         }
 291                 }
 292
 293                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 294
 295                 $out->enableOOUI();
 296                 $fields = array();
 297
 298                 $fields[] = new OOUI\FieldLayout(
 299                         new MediaWiki\Widget\ComplexTitleInputWidget( array(
 300                                 'id' => 'wpNewTitle',
 301                                 'namespace' => array(
 302                                         'id' => 'wpNewTitleNs',
 303                                         'name' => 'wpNewTitleNs',
 304                                         'value' => $newTitle->getNamespace(),
 305                                         'exclude' => $immovableNamespaces,
 306                                 ),
 307                                 'title' => array(
 308                                         'id' => 'wpNewTitleMain',
 309                                         'name' => 'wpNewTitleMain',
 310                                         'value' => $wgContLang->recodeForEdit( $newTitle->getText() ),
 311                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 312                                         'suggestions' => false,
 313                                 ),
 314                                 'infusable' => true,
 315                         ) ),
 316                         array(
 317                                 'label' => $this->msg( 'newtitle' )->text(),
 318                                 'align' => 'top',
 319                         )
 320                 );
 321
 322                 $fields[] = new OOUI\FieldLayout(
 323                         new OOUI\TextInputWidget( array(
 324                                 'name' => 'wpReason',
 325                                 'id' => 'wpReason',
 326                                 'maxLength' => 200,
 327                                 'infusable' => true,
 328                                 'value' => $this->reason,
 329                         ) ),
 330                         array(
 331                                 'label' => $this->msg( 'movereason' )->text(),
 332                                 'align' => 'top',
 333                         )
 334                 );
 335
 336                 if ( $considerTalk ) {
 337                         $fields[] = new OOUI\FieldLayout(
 338                                 new OOUI\CheckboxInputWidget( array(
 339                                         'name' => 'wpMovetalk',
 340                                         'id' => 'wpMovetalk',
 341                                         'value' => '1',
 342                                         'selected' => $this->moveTalk,
 343                                 ) ),
 344                                 array(
 345                                         'label' => $this->msg( 'movetalk' )->text(),
 346                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 347                                         'align' => 'inline',
 348                                         'infusable' => true,
 349                                 )
 350                         );
 351                 }
 352
 353                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 354                         if ( $handler->supportsRedirects() ) {
 355                                 $isChecked = $this->leaveRedirect;
 356                                 $isDisabled = false;
 357                         } else {
 358                                 $isChecked = false;
 359                                 $isDisabled = true;
 360                         }
 361                         $fields[] = new OOUI\FieldLayout(
 362                                 new OOUI\CheckboxInputWidget( array(
 363                                         'name' => 'wpLeaveRedirect',
 364                                         'id' => 'wpLeaveRedirect',
 365                                         'value' => '1',
 366                                         'selected' => $isChecked,
 367                                         'disabled' => $isDisabled,
 368                                 ) ),
 369                                 array(
 370                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 371                                         'align' => 'inline',
 372                                 )
 373                         );
 374                 }
 375
 376                 if ( $hasRedirects ) {
 377                         $fields[] = new OOUI\FieldLayout(
 378                                 new OOUI\CheckboxInputWidget( array(
 379                                         'name' => 'wpFixRedirects',
 380                                         'id' => 'wpFixRedirects',
 381                                         'value' => '1',
 382                                         'selected' => $this->fixRedirects,
 383                                 ) ),
 384                                 array(
 385                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 386                                         'align' => 'inline',
 387                                 )
 388                         );
 389                 }
 390
 391                 if ( $canMoveSubpage ) {
 392                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 393                         $fields[] = new OOUI\FieldLayout(
 394                                 new OOUI\CheckboxInputWidget( array(
 395                                         'name' => 'wpMovesubpages',
 396                                         'id' => 'wpMovesubpages',
 397                                         'value' => '1',
 398                                         # Don't check the box if we only have talk subpages to
 399                                         # move and we aren't moving the talk page.
 400                                         'selected' => $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 401                                 ) ),
 402                                 array(
 403                                         'label' => new OOUI\HtmlSnippet(
 404                                                 $this->msg(
 405                                                         ( $this->oldTitle->hasSubpages()
 406                                                                 ? 'move-subpages'
 407                                                                 : 'move-talk-subpages' )
 408                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 409                                         ),
 410                                         'align' => 'inline',
 411                                 )
 412                         );
 413                 }
 414
 415                 # Don't allow watching if user is not logged in
 416                 if ( $user->isLoggedIn() ) {
 417                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 418                                 || $user->isWatched( $this->oldTitle ) );
 419                         $fields[] = new OOUI\FieldLayout(
 420                                 new OOUI\CheckboxInputWidget( array(
 421                                         'name' => 'wpWatch',
 422                                         'id' => 'watch', # ew
 423                                         'value' => '1',
 424                                         'selected' => $watchChecked,
 425                                 ) ),
 426                                 array(
 427                                         'label' => $this->msg( 'move-watch' )->text(),
 428                                         'align' => 'inline',
 429                                 )
 430                         );
 431                 }
 432
 433                 if ( $confirm ) {
 434                         $fields[] = new OOUI\FieldLayout(
 435                                 new OOUI\CheckboxInputWidget( array(
 436                                         'name' => 'wpConfirm',
 437                                         'id' => 'wpConfirm',
 438                                         'value' => '1',
 439                                 ) ),
 440                                 array(
 441                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 442                                         'align' => 'inline',
 443                                 )
 444                         );
 445                 }
 446
 447                 $fields[] = new OOUI\FieldLayout(
 448                         new OOUI\ButtonInputWidget( array(
 449                                 'name' => $submitVar,
 450                                 'value' => $this->msg( 'movepagebtn' )->text(),
 451                                 'label' => $this->msg( 'movepagebtn' )->text(),
 452                                 'flags' => array( 'constructive', 'primary' ),
 453                                 'type' => 'submit',
 454                         ) ),
 455                         array(
 456                                 'align' => 'top',
 457                         )
 458                 );
 459
 460                 $fieldset = new OOUI\FieldsetLayout( array(
 461                         'label' => $this->msg( 'move-page-legend' )->text(),
 462                         'id' => 'mw-movepage-table',
 463                         'items' => $fields,
 464                 ) );
 465
 466                 $form = new OOUI\FormLayout( array(
 467                         'method' => 'post',
 468                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 469                         'id' => 'movepage',
 470                 ) );
 471                 $form->appendContent(
 472                         $fieldset,
 473                         new OOUI\HtmlSnippet(
 474                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 475                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 476                         )
 477                 );
 478
 479                 $out->addHTML(
 480                         new OOUI\PanelLayout( array(
 481                                 'classes' => array( 'movepage-wrapper' ),
 482                                 'expanded' => false,
 483                                 'padded' => true,
 484                                 'framed' => true,
 485                                 'content' => $form,
 486                         ) )
 487                 );
 488
 489                 $this->showLogFragment( $this->oldTitle );
 490                 $this->showSubpages( $this->oldTitle );
 491         }
 492
 493         function doSubmit() {
 494                 $user = $this->getUser();
 495
 496                 if ( $user->pingLimiter( 'move' ) ) {
 497                         throw new ThrottledError;
 498                 }
 499
 500                 $ot = $this->oldTitle;
 501                 $nt = $this->newTitle;
 502
 503                 # don't allow moving to pages with # in
 504                 if ( !$nt || $nt->hasFragment() ) {
 505                         $this->showForm( array( array( 'badtitletext' ) ) );
 506
 507                         return;
 508                 }
 509
 510                 # Show a warning if the target file exists on a shared repo
 511                 if ( $nt->getNamespace() == NS_FILE
 512                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 513                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 514                         && wfFindFile( $nt )
 515                 ) {
 516                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 517
 518                         return;
 519                 }
 520
 521                 # Delete to make way if requested
 522                 if ( $this->deleteAndMove ) {
 523                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 524                         if ( count( $permErrors ) ) {
 525                                 # Only show the first error
 526                                 $this->showForm( $permErrors );
 527
 528                                 return;
 529                         }
 530
 531                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 532
 533                         // Delete an associated image if there is
 534                         if ( $nt->getNamespace() == NS_FILE ) {
 535                                 $file = wfLocalFile( $nt );
 536                                 $file->load( File::READ_LATEST );
 537                                 if ( $file->exists() ) {
 538                                         $file->delete( $reason, false, $user );
 539                                 }
 540                         }
 541
 542                         $error = ''; // passed by ref
 543                         $page = WikiPage::factory( $nt );
 544                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 545                         if ( !$deleteStatus->isGood() ) {
 546                                 $this->showForm( $deleteStatus->getErrorsArray() );
 547
 548                                 return;
 549                         }
 550                 }
 551
 552                 $handler = ContentHandler::getForTitle( $ot );
 553
 554                 if ( !$handler->supportsRedirects() ) {
 555                         $createRedirect = false;
 556                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 557                         $createRedirect = $this->leaveRedirect;
 558                 } else {
 559                         $createRedirect = true;
 560                 }
 561
 562                 # Do the actual move.
 563                 $mp = new MovePage( $ot, $nt );
 564                 $valid = $mp->isValidMove();
 565                 if ( !$valid->isOK() ) {
 566                         $this->showForm( $valid->getErrorsArray() );
 567                         return;
 568                 }
 569
 570                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 571                 if ( !$permStatus->isOK() ) {
 572                         $this->showForm( $permStatus->getErrorsArray() );
 573                         return;
 574                 }
 575
 576                 $status = $mp->move( $user, $this->reason, $createRedirect );
 577                 if ( !$status->isOK() ) {
 578                         $this->showForm( $status->getErrorsArray() );
 579                         return;
 580                 }
 581
 582                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 583                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 584                 }
 585
 586                 $out = $this->getOutput();
 587                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 588
 589                 $oldLink = Linker::link(
 590                         $ot,
 591                         null,
 592                         array( 'id' => 'movepage-oldlink' ),
 593                         array( 'redirect' => 'no' )
 594                 );
 595                 $newLink = Linker::linkKnown(
 596                         $nt,
 597                         null,
 598                         array( 'id' => 'movepage-newlink' )
 599                 );
 600                 $oldText = $ot->getPrefixedText();
 601                 $newText = $nt->getPrefixedText();
 602
 603                 if ( $ot->exists() ) {
 604                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 605                         // a redirect to the new title. This is not safe, but what we did before was
 606                         // even worse: we just determined whether a redirect should have been created,
 607                         // and reported that it was created if it should have, without any checks.
 608                         // Also note that isRedirect() is unreliable because of bug 37209.
 609                         $msgName = 'movepage-moved-redirect';
 610                 } else {
 611                         $msgName = 'movepage-moved-noredirect';
 612                 }
 613
 614                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 615                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 616                 $out->addWikiMsg( $msgName );
 617
 618                 Hooks::run( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 619
 620                 # Now we move extra pages we've been asked to move: subpages and talk
 621                 # pages.  First, if the old page or the new page is a talk page, we
 622                 # can't move any talk pages: cancel that.
 623                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 624                         $this->moveTalk = false;
 625                 }
 626
 627                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 628                         $this->moveSubpages = false;
 629                 }
 630
 631                 /**
 632                  * Next make a list of id's.  This might be marginally less efficient
 633                  * than a more direct method, but this is not a highly performance-cri-
 634                  * tical code path and readable code is more important here.
 635                  *
 636                  * If the target namespace doesn't allow subpages, moving with subpages
 637                  * would mean that you couldn't move them back in one operation, which
 638                  * is bad.
 639                  * @todo FIXME: A specific error message should be given in this case.
 640                  */
 641
 642                 // @todo FIXME: Use Title::moveSubpages() here
 643                 $dbr = wfGetDB( DB_MASTER );
 644                 if ( $this->moveSubpages && (
 645                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 646                                 $this->moveTalk
 647                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 648                         )
 649                 ) ) {
 650                         $conds = array(
 651                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 652                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 653                         );
 654                         $conds['page_namespace'] = array();
 655                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 656                                 $conds['page_namespace'][] = $ot->getNamespace();
 657                         }
 658                         if ( $this->moveTalk &&
 659                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 660                         ) {
 661                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 662                         }
 663                 } elseif ( $this->moveTalk ) {
 664                         $conds = array(
 665                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 666                                 'page_title' => $ot->getDBkey()
 667                         );
 668                 } else {
 669                         # Skip the query
 670                         $conds = null;
 671                 }
 672
 673                 $extraPages = array();
 674                 if ( !is_null( $conds ) ) {
 675                         $extraPages = TitleArray::newFromResult(
 676                                 $dbr->select( 'page',
 677                                         array( 'page_id', 'page_namespace', 'page_title' ),
 678                                         $conds,
 679                                         __METHOD__
 680                                 )
 681                         );
 682                 }
 683
 684                 $extraOutput = array();
 685                 $count = 1;
 686                 foreach ( $extraPages as $oldSubpage ) {
 687                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 688                                 # Already did this one.
 689                                 continue;
 690                         }
 691
 692                         $newPageName = preg_replace(
 693                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 694                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 695                                 $oldSubpage->getDBkey()
 696                         );
 697
 698                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 699                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 700                                 $newNs = $nt->getNamespace();
 701                         } elseif ( $oldSubpage->isTalkPage() ) {
 702                                 $newNs = $nt->getTalkPage()->getNamespace();
 703                         } else {
 704                                 $newNs = $nt->getSubjectPage()->getNamespace();
 705                         }
 706
 707                         # Bug 14385: we need makeTitleSafe because the new page names may
 708                         # be longer than 255 characters.
 709                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 710                         if ( !$newSubpage ) {
 711                                 $oldLink = Linker::linkKnown( $oldSubpage );
 712                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 713                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 714                                 continue;
 715                         }
 716
 717                         # This was copy-pasted from Renameuser, bleh.
 718                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 719                                 $link = Linker::linkKnown( $newSubpage );
 720                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 721                         } else {
 722                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 723
 724                                 if ( $success === true ) {
 725                                         if ( $this->fixRedirects ) {
 726                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 727                                         }
 728                                         $oldLink = Linker::link(
 729                                                 $oldSubpage,
 730                                                 null,
 731                                                 array(),
 732                                                 array( 'redirect' => 'no' )
 733                                         );
 734
 735                                         $newLink = Linker::linkKnown( $newSubpage );
 736                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 737                                                 ->rawParams( $oldLink, $newLink )->escaped();
 738                                         ++$count;
 739
 740                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 741                                         if ( $count >= $maximumMovedPages ) {
 742                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 743                                                         ->numParams( $maximumMovedPages )->escaped();
 744                                                 break;
 745                                         }
 746                                 } else {
 747                                         $oldLink = Linker::linkKnown( $oldSubpage );
 748                                         $newLink = Linker::link( $newSubpage );
 749                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 750                                                 ->rawParams( $oldLink, $newLink )->escaped();
 751                                 }
 752                         }
 753                 }
 754
 755                 if ( $extraOutput !== array() ) {
 756                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 757                 }
 758
 759                 # Deal with watches (we don't watch subpages)
 760                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 761                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 762         }
 763
 764         function showLogFragment( $title ) {
 765                 $moveLogPage = new LogPage( 'move' );
 766                 $out = $this->getOutput();
 767                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 768                 LogEventsList::showLogExtract( $out, 'move', $title );
 769         }
 770
 771         function showSubpages( $title ) {
 772                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 773                         return;
 774                 }
 775
 776                 $subpages = $title->getSubpages();
 777                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 778
 779                 $out = $this->getOutput();
 780                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 781
 782                 # No subpages.
 783                 if ( $count == 0 ) {
 784                         $out->addWikiMsg( 'movenosubpage' );
 785
 786                         return;
 787                 }
 788
 789                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 790                 $out->addHTML( "<ul>\n" );
 791
 792                 foreach ( $subpages as $subpage ) {
 793                         $link = Linker::link( $subpage );
 794                         $out->addHTML( "<li>$link</li>\n" );
 795                 }
 796                 $out->addHTML( "</ul>\n" );
 797         }
 798
 799         /**
 800          * Return an array of subpages beginning with $search that this special page will accept.
 801          *
 802          * @param string $search Prefix to search for
 803          * @param int $limit Maximum number of results to return (usually 10)
 804          * @param int $offset Number of results to skip (usually 0)
 805          * @return string[] Matching subpages
 806          */
 807         public function prefixSearchSubpages( $search, $limit, $offset ) {
 808                 $title = Title::newFromText( $search );
 809                 if ( !$title || !$title->canExist() ) {
 810                         // No prefix suggestion in special and media namespace
 811                         return array();
 812                 }
 813                 // Autocomplete subpage the same as a normal search
 814                 $prefixSearcher = new StringPrefixSearch;
 815                 $result = $prefixSearcher->search( $search, $limit, array(), $offset );
 816                 return $result;
 817         }
 818
 819         protected function getGroupName() {
 820                 return 'pagetools';
 821         }
 822 }