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