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
  37         /** @var string Text input */
  38         protected $reason;
  39
  40         // Checks
  41
  42         /** @var bool */
  43         protected $moveTalk;
  44
  45         /** @var bool */
  46         protected $deleteAndMove;
  47
  48         /** @var bool */
  49         protected $moveSubpages;
  50
  51         /** @var bool */
  52         protected $fixRedirects;
  53
  54         /** @var bool */
  55         protected $leaveRedirect;
  56
  57         /** @var bool */
  58         protected $moveOverShared;
  59
  60         private $watch = false;
  61
  62         public function __construct() {
  63                 parent::__construct( 'Movepage' );
  64         }
  65
  66         public function execute( $par ) {
  67                 $this->useTransactionalTimeLimit();
  68
  69                 $this->checkReadOnly();
  70
  71                 $this->setHeaders();
  72                 $this->outputHeader();
  73
  74                 $request = $this->getRequest();
  75                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  76
  77                 // Yes, the use of getVal() and getText() is wanted, see bug 20365
  78
  79                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  80                 if ( is_string( $oldTitleText ) ) {
  81                         $this->oldTitle = Title::newFromText( $oldTitleText );
  82                 }
  83
  84                 if ( $this->oldTitle === null ) {
  85                         // Either oldTitle wasn't passed, or newFromText returned null
  86                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  87                 }
  88                 if ( !$this->oldTitle->exists() ) {
  89                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  90                 }
  91
  92                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  93                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  94                 // Backwards compatibility for forms submitting here from other sources
  95                 // which is more common than it should be..
  96                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  97                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  98                         ? Title::newFromText( $newTitleText_bc )
  99                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 100
 101                 $user = $this->getUser();
 102
 103                 # Check rights
 104                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 105                 if ( count( $permErrors ) ) {
 106                         // Auto-block user's IP if the account was "hard" blocked
 107                         DeferredUpdates::addCallableUpdate( function() use ( $user ) {
 108                                 $user->spreadAnyEditBlock();
 109                         } );
 110                         throw new PermissionsError( 'move', $permErrors );
 111                 }
 112
 113                 $def = !$request->wasPosted();
 114
 115                 $this->reason = $request->getText( 'wpReason' );
 116                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 117                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 118                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 119                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
 120                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
 121                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
 122                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 123
 124                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
 125                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 126                 ) {
 127                         $this->doSubmit();
 128                 } else {
 129                         $this->showForm( array() );
 130                 }
 131         }
 132
 133         /**
 134          * Show the form
 135          *
 136          * @param array $err Error messages. Each item is an error message.
 137          *    It may either be a string message name or array message name and
 138          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 139          */
 140         function showForm( $err ) {
 141                 global $wgContLang;
 142
 143                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 144
 145                 $oldTitleLink = Linker::link( $this->oldTitle );
 146
 147                 $out = $this->getOutput();
 148                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 149                 $out->addModules( 'mediawiki.special.movePage' );
 150                 $out->addModuleStyles( 'mediawiki.special.movePage.styles' );
 151                 $this->addHelpLink( 'Help:Moving a page' );
 152
 153                 $newTitle = $this->newTitle;
 154
 155                 if ( !$newTitle ) {
 156                         # Show the current title as a default
 157                         # when the form is first opened.
 158                         $newTitle = $this->oldTitle;
 159                 } elseif ( !count( $err ) ) {
 160                         # If a title was supplied, probably from the move log revert
 161                         # link, check for validity. We can then show some diagnostic
 162                         # information and save a click.
 163                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 164                         if ( is_array( $newerr ) ) {
 165                                 $err = $newerr;
 166                         }
 167                 }
 168
 169                 $user = $this->getUser();
 170
 171                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 172                         && $newTitle->quickUserCan( 'delete', $user )
 173                 ) {
 174                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 175                         $movepagebtn = $this->msg( 'delete_and_move' )->text();
 176                         $submitVar = 'wpDeleteAndMove';
 177                         $confirm = true;
 178                         $err = array();
 179                 } else {
 180                         if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 181                                 $out->wrapWikiMsg(
 182                                         "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 183                                         'moveuserpage-warning'
 184                                 );
 185                         } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 186                                 $out->wrapWikiMsg(
 187                                         "<div class=\"error mw-movecategorypage-warning\">\n$1\n</div>",
 188                                         'movecategorypage-warning'
 189                                 );
 190                         }
 191
 192                         $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 193                                 'movepagetext' :
 194                                 'movepagetext-noredirectfixer'
 195                         );
 196                         $movepagebtn = $this->msg( 'movepagebtn' )->text();
 197                         $submitVar = 'wpMove';
 198                         $confirm = false;
 199                 }
 200
 201                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 202                         && $user->isAllowed( 'reupload-shared' )
 203                 ) {
 204                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 205                         $submitVar = 'wpMoveOverSharedFile';
 206                         $err = array();
 207                 }
 208
 209                 $oldTalk = $this->oldTitle->getTalkPage();
 210                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 211                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 212
 213                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 214                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 215
 216                 # We also want to be able to move assoc. subpage talk-pages even if base page
 217                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 218                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 219                         ( $oldTalk->exists()
 220                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 221
 222                 $dbr = wfGetDB( DB_SLAVE );
 223                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 224                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 225                                 array(
 226                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 227                                         'rd_title' => $this->oldTitle->getDBkey(),
 228                                 ), __METHOD__ );
 229                 } else {
 230                         $hasRedirects = false;
 231                 }
 232
 233                 if ( $considerTalk ) {
 234                         $out->addWikiMsg( 'movepagetalktext' );
 235                 }
 236
 237                 if ( count( $err ) ) {
 238                         $out->addHTML( "<div class='error'>\n" );
 239                         $action_desc = $this->msg( 'action-move' )->plain();
 240                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 241
 242                         if ( count( $err ) == 1 ) {
 243                                 $errMsg = $err[0];
 244                                 $errMsgName = array_shift( $errMsg );
 245
 246                                 if ( $errMsgName == 'hookaborted' ) {
 247                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 248                                 } else {
 249                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 250                                 }
 251                         } else {
 252                                 $errStr = array();
 253
 254                                 foreach ( $err as $errMsg ) {
 255                                         if ( $errMsg[0] == 'hookaborted' ) {
 256                                                 $errStr[] = $errMsg[1];
 257                                         } else {
 258                                                 $errMsgName = array_shift( $errMsg );
 259                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 260                                         }
 261                                 }
 262
 263                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 264                         }
 265                         $out->addHTML( "</div>\n" );
 266                 }
 267
 268                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 269                         # Is the title semi-protected?
 270                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 271                                 $noticeMsg = 'semiprotectedpagemovewarning';
 272                                 $classes[] = 'mw-textarea-sprotected';
 273                         } else {
 274                                 # Then it must be protected based on static groups (regular)
 275                                 $noticeMsg = 'protectedpagemovewarning';
 276                                 $classes[] = 'mw-textarea-protected';
 277                         }
 278                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 279                         $out->addWikiMsg( $noticeMsg );
 280                         LogEventsList::showLogExtract(
 281                                 $out,
 282                                 'protect',
 283                                 $this->oldTitle,
 284                                 '',
 285                                 array( 'lim' => 1 )
 286                         );
 287                         $out->addHTML( "</div>\n" );
 288                 }
 289
 290                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 291                 // is enforced in the mediawiki.special.movePage module
 292
 293                 $immovableNamespaces = array();
 294                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 295                         if ( !MWNamespace::isMovable( $nsId ) ) {
 296                                 $immovableNamespaces[] = $nsId;
 297                         }
 298                 }
 299
 300                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 301
 302                 $out->enableOOUI();
 303                 $fields = array();
 304
 305                 $fields[] = new OOUI\FieldLayout(
 306                         new OOUI\LabelWidget( array(
 307                                 'label' => new OOUI\HtmlSnippet( "<strong>$oldTitleLink</strong>" )
 308                         ) ),
 309                         array(
 310                                 'label' => $this->msg( 'movearticle' )->text(),
 311                                 'align' => 'top',
 312                         )
 313                 );
 314
 315                 $fields[] = new OOUI\FieldLayout(
 316                         new MediaWiki\Widget\ComplexTitleInputWidget( array(
 317                                 'id' => 'wpNewTitle',
 318                                 'namespace' => array(
 319                                         'id' => 'wpNewTitleNs',
 320                                         'name' => 'wpNewTitleNs',
 321                                         'value' => $newTitle->getNamespace(),
 322                                         'exclude' => $immovableNamespaces,
 323                                 ),
 324                                 'title' => array(
 325                                         'id' => 'wpNewTitleMain',
 326                                         'name' => 'wpNewTitleMain',
 327                                         'value' => $wgContLang->recodeForEdit( $newTitle->getText() ),
 328                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 329                                         'suggestions' => false,
 330                                 ),
 331                                 'infusable' => true,
 332                         ) ),
 333                         array(
 334                                 'label' => $this->msg( 'newtitle' )->text(),
 335                                 'align' => 'top',
 336                         )
 337                 );
 338
 339                 $fields[] = new OOUI\FieldLayout(
 340                         new OOUI\TextInputWidget( array(
 341                                 'name' => 'wpReason',
 342                                 'id' => 'wpReason',
 343                                 'maxLength' => 200,
 344                                 'infusable' => true,
 345                         ) ),
 346                         array(
 347                                 'label' => $this->msg( 'movereason' )->text(),
 348                                 'align' => 'top',
 349                         )
 350                 );
 351
 352                 if ( $considerTalk ) {
 353                         $fields[] = new OOUI\FieldLayout(
 354                                 new OOUI\CheckboxInputWidget( array(
 355                                         'name' => 'wpMovetalk',
 356                                         'id' => 'wpMovetalk',
 357                                         'value' => '1',
 358                                         'selected' => $this->moveTalk,
 359                                 ) ),
 360                                 array(
 361                                         'label' => $this->msg( 'movetalk' )->text(),
 362                                         'align' => 'inline',
 363                                 )
 364                         );
 365                 }
 366
 367                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 368                         if ( $handler->supportsRedirects() ) {
 369                                 $isChecked = $this->leaveRedirect;
 370                                 $isDisabled = false;
 371                         } else {
 372                                 $isChecked = false;
 373                                 $isDisabled = true;
 374                         }
 375                         $fields[] = new OOUI\FieldLayout(
 376                                 new OOUI\CheckboxInputWidget( array(
 377                                         'name' => 'wpLeaveRedirect',
 378                                         'id' => 'wpLeaveRedirect',
 379                                         'value' => '1',
 380                                         'selected' => $isChecked,
 381                                         'disabled' => $isDisabled,
 382                                 ) ),
 383                                 array(
 384                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 385                                         'align' => 'inline',
 386                                 )
 387                         );
 388                 }
 389
 390                 if ( $hasRedirects ) {
 391                         $fields[] = new OOUI\FieldLayout(
 392                                 new OOUI\CheckboxInputWidget( array(
 393                                         'name' => 'wpFixRedirects',
 394                                         'id' => 'wpFixRedirects',
 395                                         'value' => '1',
 396                                         'selected' => $this->fixRedirects,
 397                                 ) ),
 398                                 array(
 399                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 400                                         'align' => 'inline',
 401                                 )
 402                         );
 403                 }
 404
 405                 if ( $canMoveSubpage ) {
 406                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 407                         $fields[] = new OOUI\FieldLayout(
 408                                 new OOUI\CheckboxInputWidget( array(
 409                                         'name' => 'wpMovesubpages',
 410                                         'id' => 'wpMovesubpages',
 411                                         'value' => '1',
 412                                         # Don't check the box if we only have talk subpages to
 413                                         # move and we aren't moving the talk page.
 414                                         'selected' => $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 415                                 ) ),
 416                                 array(
 417                                         'label' => new OOUI\HtmlSnippet(
 418                                                 $this->msg(
 419                                                         ( $this->oldTitle->hasSubpages()
 420                                                                 ? 'move-subpages'
 421                                                                 : 'move-talk-subpages' )
 422                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 423                                         ),
 424                                         'align' => 'inline',
 425                                 )
 426                         );
 427                 }
 428
 429                 # Don't allow watching if user is not logged in
 430                 if ( $user->isLoggedIn() ) {
 431                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 432                                 || $user->isWatched( $this->oldTitle ) );
 433                         $fields[] = new OOUI\FieldLayout(
 434                                 new OOUI\CheckboxInputWidget( array(
 435                                         'name' => 'wpWatch',
 436                                         'id' => 'watch', # ew
 437                                         'value' => '1',
 438                                         'selected' => $watchChecked,
 439                                 ) ),
 440                                 array(
 441                                         'label' => $this->msg( 'move-watch' )->text(),
 442                                         'align' => 'inline',
 443                                 )
 444                         );
 445                 }
 446
 447                 if ( $confirm ) {
 448                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 449                                 || $user->isWatched( $this->oldTitle ) );
 450                         $fields[] = new OOUI\FieldLayout(
 451                                 new OOUI\CheckboxInputWidget( array(
 452                                         'name' => 'wpConfirm',
 453                                         'id' => 'wpConfirm',
 454                                         'value' => '1',
 455                                 ) ),
 456                                 array(
 457                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 458                                         'align' => 'inline',
 459                                 )
 460                         );
 461                 }
 462
 463                 $fields[] = new OOUI\FieldLayout(
 464                         new OOUI\ButtonInputWidget( array(
 465                                 'name' => $submitVar,
 466                                 'value' => $movepagebtn,
 467                                 'label' => $movepagebtn,
 468                                 'flags' => array( 'progressive', 'primary' ),
 469                                 'type' => 'submit',
 470                         ) ),
 471                         array(
 472                                 'align' => 'top',
 473                         )
 474                 );
 475
 476                 $fieldset = new OOUI\FieldsetLayout( array(
 477                         'label' => $this->msg( 'move-page-legend' )->text(),
 478                         'id' => 'mw-movepage-table',
 479                         'items' => $fields,
 480                 ) );
 481
 482                 $form = new OOUI\FormLayout( array(
 483                         'method' => 'post',
 484                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 485                         'id' => 'movepage',
 486                 ) );
 487                 $form->appendContent(
 488                         $fieldset,
 489                         new OOUI\HtmlSnippet(
 490                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 491                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 492                         )
 493                 );
 494
 495                 $out->addHTML(
 496                         new OOUI\PanelLayout( array(
 497                                 'classes' => array( 'movepage-wrapper' ),
 498                                 'expanded' => false,
 499                                 'padded' => true,
 500                                 'framed' => true,
 501                                 'content' => $form,
 502                         ) )
 503                 );
 504
 505                 $this->showLogFragment( $this->oldTitle );
 506                 $this->showSubpages( $this->oldTitle );
 507         }
 508
 509         function doSubmit() {
 510                 $user = $this->getUser();
 511
 512                 if ( $user->pingLimiter( 'move' ) ) {
 513                         throw new ThrottledError;
 514                 }
 515
 516                 $ot = $this->oldTitle;
 517                 $nt = $this->newTitle;
 518
 519                 # don't allow moving to pages with # in
 520                 if ( !$nt || $nt->hasFragment() ) {
 521                         $this->showForm( array( array( 'badtitletext' ) ) );
 522
 523                         return;
 524                 }
 525
 526                 # Show a warning if the target file exists on a shared repo
 527                 if ( $nt->getNamespace() == NS_FILE
 528                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 529                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 530                         && wfFindFile( $nt )
 531                 ) {
 532                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 533
 534                         return;
 535                 }
 536
 537                 # Delete to make way if requested
 538                 if ( $this->deleteAndMove ) {
 539                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 540                         if ( count( $permErrors ) ) {
 541                                 # Only show the first error
 542                                 $this->showForm( $permErrors );
 543
 544                                 return;
 545                         }
 546
 547                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 548
 549                         // Delete an associated image if there is
 550                         if ( $nt->getNamespace() == NS_FILE ) {
 551                                 $file = wfLocalFile( $nt );
 552                                 $file->load( File::READ_LATEST );
 553                                 if ( $file->exists() ) {
 554                                         $file->delete( $reason, false, $user );
 555                                 }
 556                         }
 557
 558                         $error = ''; // passed by ref
 559                         $page = WikiPage::factory( $nt );
 560                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 561                         if ( !$deleteStatus->isGood() ) {
 562                                 $this->showForm( $deleteStatus->getErrorsArray() );
 563
 564                                 return;
 565                         }
 566                 }
 567
 568                 $handler = ContentHandler::getForTitle( $ot );
 569
 570                 if ( !$handler->supportsRedirects() ) {
 571                         $createRedirect = false;
 572                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 573                         $createRedirect = $this->leaveRedirect;
 574                 } else {
 575                         $createRedirect = true;
 576                 }
 577
 578                 # Do the actual move.
 579                 $mp = new MovePage( $ot, $nt );
 580                 $valid = $mp->isValidMove();
 581                 if ( !$valid->isOK() ) {
 582                         $this->showForm( $valid->getErrorsArray() );
 583                         return;
 584                 }
 585
 586                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 587                 if ( !$permStatus->isOK() ) {
 588                         $this->showForm( $permStatus->getErrorsArray() );
 589                         return;
 590                 }
 591
 592                 $status = $mp->move( $user, $this->reason, $createRedirect );
 593                 if ( !$status->isOK() ) {
 594                         $this->showForm( $status->getErrorsArray() );
 595                         return;
 596                 }
 597
 598                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 599                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 600                 }
 601
 602                 $out = $this->getOutput();
 603                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 604
 605                 $oldLink = Linker::link(
 606                         $ot,
 607                         null,
 608                         array( 'id' => 'movepage-oldlink' ),
 609                         array( 'redirect' => 'no' )
 610                 );
 611                 $newLink = Linker::linkKnown(
 612                         $nt,
 613                         null,
 614                         array( 'id' => 'movepage-newlink' )
 615                 );
 616                 $oldText = $ot->getPrefixedText();
 617                 $newText = $nt->getPrefixedText();
 618
 619                 if ( $ot->exists() ) {
 620                         //NOTE: we assume that if the old title exists, it's because it was re-created as
 621                         // a redirect to the new title. This is not safe, but what we did before was
 622                         // even worse: we just determined whether a redirect should have been created,
 623                         // and reported that it was created if it should have, without any checks.
 624                         // Also note that isRedirect() is unreliable because of bug 37209.
 625                         $msgName = 'movepage-moved-redirect';
 626                 } else {
 627                         $msgName = 'movepage-moved-noredirect';
 628                 }
 629
 630                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 631                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 632                 $out->addWikiMsg( $msgName );
 633
 634                 Hooks::run( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 635
 636                 # Now we move extra pages we've been asked to move: subpages and talk
 637                 # pages.  First, if the old page or the new page is a talk page, we
 638                 # can't move any talk pages: cancel that.
 639                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 640                         $this->moveTalk = false;
 641                 }
 642
 643                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 644                         $this->moveSubpages = false;
 645                 }
 646
 647                 # Next make a list of id's.  This might be marginally less efficient
 648                 # than a more direct method, but this is not a highly performance-cri-
 649                 # tical code path and readable code is more important here.
 650                 #
 651                 # Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 652                 # 4 might get confused.  If so, consider rewriting as a UNION.
 653                 #
 654                 # If the target namespace doesn't allow subpages, moving with subpages
 655                 # would mean that you couldn't move them back in one operation, which
 656                 # is bad.
 657                 # @todo FIXME: A specific error message should be given in this case.
 658
 659                 // @todo FIXME: Use Title::moveSubpages() here
 660                 $dbr = wfGetDB( DB_MASTER );
 661                 if ( $this->moveSubpages && (
 662                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 663                                 $this->moveTalk
 664                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 665                         )
 666                 ) ) {
 667                         $conds = array(
 668                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 669                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 670                         );
 671                         $conds['page_namespace'] = array();
 672                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 673                                 $conds['page_namespace'][] = $ot->getNamespace();
 674                         }
 675                         if ( $this->moveTalk &&
 676                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 677                         ) {
 678                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 679                         }
 680                 } elseif ( $this->moveTalk ) {
 681                         $conds = array(
 682                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 683                                 'page_title' => $ot->getDBkey()
 684                         );
 685                 } else {
 686                         # Skip the query
 687                         $conds = null;
 688                 }
 689
 690                 $extraPages = array();
 691                 if ( !is_null( $conds ) ) {
 692                         $extraPages = TitleArray::newFromResult(
 693                                 $dbr->select( 'page',
 694                                         array( 'page_id', 'page_namespace', 'page_title' ),
 695                                         $conds,
 696                                         __METHOD__
 697                                 )
 698                         );
 699                 }
 700
 701                 $extraOutput = array();
 702                 $count = 1;
 703                 foreach ( $extraPages as $oldSubpage ) {
 704                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 705                                 # Already did this one.
 706                                 continue;
 707                         }
 708
 709                         $newPageName = preg_replace(
 710                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 711                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 712                                 $oldSubpage->getDBkey()
 713                         );
 714
 715                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 716                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 717                                 $newNs = $nt->getNamespace();
 718                         } elseif ( $oldSubpage->isTalkPage() ) {
 719                                 $newNs = $nt->getTalkPage()->getNamespace();
 720                         } else {
 721                                 $newNs = $nt->getSubjectPage()->getNamespace();
 722                         }
 723
 724                         # Bug 14385: we need makeTitleSafe because the new page names may
 725                         # be longer than 255 characters.
 726                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 727                         if ( !$newSubpage ) {
 728                                 $oldLink = Linker::linkKnown( $oldSubpage );
 729                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 730                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 731                                 continue;
 732                         }
 733
 734                         # This was copy-pasted from Renameuser, bleh.
 735                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 736                                 $link = Linker::linkKnown( $newSubpage );
 737                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 738                         } else {
 739                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 740
 741                                 if ( $success === true ) {
 742                                         if ( $this->fixRedirects ) {
 743                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 744                                         }
 745                                         $oldLink = Linker::link(
 746                                                 $oldSubpage,
 747                                                 null,
 748                                                 array(),
 749                                                 array( 'redirect' => 'no' )
 750                                         );
 751
 752                                         $newLink = Linker::linkKnown( $newSubpage );
 753                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 754                                                 ->rawParams( $oldLink, $newLink )->escaped();
 755                                         ++$count;
 756
 757                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 758                                         if ( $count >= $maximumMovedPages ) {
 759                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 760                                                         ->numParams( $maximumMovedPages )->escaped();
 761                                                 break;
 762                                         }
 763                                 } else {
 764                                         $oldLink = Linker::linkKnown( $oldSubpage );
 765                                         $newLink = Linker::link( $newSubpage );
 766                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 767                                                 ->rawParams( $oldLink, $newLink )->escaped();
 768                                 }
 769                         }
 770                 }
 771
 772                 if ( $extraOutput !== array() ) {
 773                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 774                 }
 775
 776                 # Deal with watches (we don't watch subpages)
 777                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 778                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 779         }
 780
 781         function showLogFragment( $title ) {
 782                 $moveLogPage = new LogPage( 'move' );
 783                 $out = $this->getOutput();
 784                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 785                 LogEventsList::showLogExtract( $out, 'move', $title );
 786         }
 787
 788         function showSubpages( $title ) {
 789                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 790                         return;
 791                 }
 792
 793                 $subpages = $title->getSubpages();
 794                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 795
 796                 $out = $this->getOutput();
 797                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 798
 799                 # No subpages.
 800                 if ( $count == 0 ) {
 801                         $out->addWikiMsg( 'movenosubpage' );
 802
 803                         return;
 804                 }
 805
 806                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 807                 $out->addHTML( "<ul>\n" );
 808
 809                 foreach ( $subpages as $subpage ) {
 810                         $link = Linker::link( $subpage );
 811                         $out->addHTML( "<li>$link</li>\n" );
 812                 }
 813                 $out->addHTML( "</ul>\n" );
 814         }
 815
 816         protected function getGroupName() {
 817                 return 'pagetools';
 818         }
 819 }