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
  31         /**
  32          * @var Title
  33          */
  34         var $oldTitle, $newTitle; # Objects
  35         var $reason; # Text input
  36         var $moveTalk, $deleteAndMove, $moveSubpages, $fixRedirects, $leaveRedirect, $moveOverShared; # Checks
  37
  38         private $watch = false;
  39
  40         public function __construct() {
  41                 parent::__construct( 'Movepage' );
  42         }
  43
  44         public function execute( $par ) {
  45                 $this->checkReadOnly();
  46
  47                 $this->setHeaders();
  48                 $this->outputHeader();
  49
  50                 $request = $this->getRequest();
  51                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  52
  53                 // Yes, the use of getVal() and getText() is wanted, see bug 20365
  54                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  55                 $newTitleText = $request->getText( 'wpNewTitle' );
  56
  57                 $this->oldTitle = Title::newFromText( $oldTitleText );
  58                 $this->newTitle = Title::newFromText( $newTitleText );
  59
  60                 if( is_null( $this->oldTitle ) ) {
  61                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  62                 }
  63                 if( !$this->oldTitle->exists() ) {
  64                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  65                 }
  66
  67                 $user = $this->getUser();
  68
  69                 # Check rights
  70                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
  71                 if ( count( $permErrors ) ) {
  72                         // Auto-block user's IP if the account was "hard" blocked
  73                         $user->spreadAnyEditBlock();
  74                         throw new PermissionsError( 'move', $permErrors );
  75                 }
  76
  77                 $def = !$request->wasPosted();
  78
  79                 $this->reason = $request->getText( 'wpReason' );
  80                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
  81                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
  82                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
  83                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
  84                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
  85                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
  86                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
  87
  88                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
  89                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) ) ) {
  90                         $this->doSubmit();
  91                 } else {
  92                         $this->showForm( array() );
  93                 }
  94         }
  95
  96         /**
  97          * Show the form
  98          *
  99          * @param $err Array: error messages. Each item is an error message.
 100          *    It may either be a string message name or array message name and
 101          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 102          */
 103         function showForm( $err ) {
 104                 global $wgContLang, $wgFixDoubleRedirects, $wgMaximumMovedPages;
 105
 106                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 107
 108                 $oldTitleLink = Linker::link( $this->oldTitle );
 109
 110                 $out = $this->getOutput();
 111                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 112                 $out->addModules( 'mediawiki.special.movePage' );
 113
 114                 $newTitle = $this->newTitle;
 115
 116                 if( !$newTitle ) {
 117                         # Show the current title as a default
 118                         # when the form is first opened.
 119                         $newTitle = $this->oldTitle;
 120                 } elseif ( !count( $err ) ) {
 121                         # If a title was supplied, probably from the move log revert
 122                         # link, check for validity. We can then show some diagnostic
 123                         # information and save a click.
 124                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 125                         if( is_array( $newerr ) ) {
 126                                 $err = $newerr;
 127                         }
 128                 }
 129
 130                 $user = $this->getUser();
 131
 132                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 133                         && $newTitle->quickUserCan( 'delete', $user )
 134                 ) {
 135                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 136                         $movepagebtn = wfMsg( 'delete_and_move' );
 137                         $submitVar = 'wpDeleteAndMove';
 138                         $confirm = "
 139                                 <tr>
 140                                         <td></td>
 141                                         <td class='mw-input'>" .
 142                                                 Xml::checkLabel( wfMsg( 'delete_and_move_confirm' ), 'wpConfirm', 'wpConfirm' ) .
 143                                         "</td>
 144                                 </tr>";
 145                         $err = array();
 146                 } else {
 147                         if ($this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 148                                 $out->wrapWikiMsg( "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>", 'moveuserpage-warning' );
 149                         }
 150                         $out->addWikiMsg( $wgFixDoubleRedirects ? 'movepagetext' :
 151                                 'movepagetext-noredirectfixer' );
 152                         $movepagebtn = wfMsg( 'movepagebtn' );
 153                         $submitVar = 'wpMove';
 154                         $confirm = false;
 155                 }
 156
 157                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 158                         && $user->isAllowed( 'reupload-shared' )
 159                 ) {
 160                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 161                         $submitVar = 'wpMoveOverSharedFile';
 162                         $err = array();
 163                 }
 164
 165                 $oldTalk = $this->oldTitle->getTalkPage();
 166                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 167                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 168
 169                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 170                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 171
 172                 # We also want to be able to move assoc. subpage talk-pages even if base page
 173                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 174                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 175                         ( $oldTalk->exists()
 176                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 177
 178                 $dbr = wfGetDB( DB_SLAVE );
 179                 if ( $wgFixDoubleRedirects ) {
 180                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 181                                 array(
 182                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 183                                         'rd_title' => $this->oldTitle->getDBkey(),
 184                                 ) , __METHOD__ );
 185                 } else {
 186                         $hasRedirects = false;
 187                 }
 188
 189                 if ( $considerTalk ) {
 190                         $out->addWikiMsg( 'movepagetalktext' );
 191                 }
 192
 193                 if ( count( $err ) ) {
 194                         $out->addHTML( "<div class='error'>\n" );
 195                         $action_desc = $this->msg( 'action-move' )->plain();
 196                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 197
 198                         if ( count( $err ) ) {
 199                                 $errMsg = $err[0];
 200                                 $errMsgName = array_shift( $errMsg );
 201                                 if ( $errMsgName == 'hookaborted' ) {
 202                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 203                                 } else {
 204                                         $out->addWikiMsgArray( $errMsg, $errMsgName );
 205                                 }
 206                         } else {
 207                                 $errStr = array();
 208                                 foreach( $err as $errMsg ) {
 209                                         if( $errMsg[0] == 'hookaborted' ) {
 210                                                 $errStr[] = $errMsg[1];
 211                                         } else {
 212                                                 $errMsgName = array_shift( $errMsg );
 213                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 214                                         }
 215                                 }
 216
 217                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 218                         }
 219                         $out->addHTML( "</div>\n" );
 220                 }
 221
 222                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 223                         # Is the title semi-protected?
 224                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 225                                 $noticeMsg = 'semiprotectedpagemovewarning';
 226                                 $classes[] = 'mw-textarea-sprotected';
 227                         } else {
 228                                 # Then it must be protected based on static groups (regular)
 229                                 $noticeMsg = 'protectedpagemovewarning';
 230                                 $classes[] = 'mw-textarea-protected';
 231                         }
 232                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 233                         $out->addWikiMsg( $noticeMsg );
 234                         LogEventsList::showLogExtract( $out, 'protect', $this->oldTitle, '', array( 'lim' => 1 ) );
 235                         $out->addHTML( "</div>\n" );
 236                 }
 237
 238                 $out->addHTML(
 239                          Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->getTitle()->getLocalURL( 'action=submit' ), 'id' => 'movepage' ) ) .
 240                          Xml::openElement( 'fieldset' ) .
 241                          Xml::element( 'legend', null, wfMsg( 'move-page-legend' ) ) .
 242                          Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-movepage-table' ) ) .
 243                          "<tr>
 244                                 <td class='mw-label'>" .
 245                                         wfMsgHtml( 'movearticle' ) .
 246                                 "</td>
 247                                 <td class='mw-input'>
 248                                         <strong>{$oldTitleLink}</strong>
 249                                 </td>
 250                         </tr>
 251                         <tr>
 252                                 <td class='mw-label'>" .
 253                                         Xml::label( wfMsg( 'newtitle' ), 'wpNewTitle' ) .
 254                                 "</td>
 255                                 <td class='mw-input'>" .
 256                                         Xml::input( 'wpNewTitle', 60, $wgContLang->recodeForEdit( $newTitle->getPrefixedText() ), array( 'type' => 'text', 'id' => 'wpNewTitle' ) ) .
 257                                         Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 258                                 "</td>
 259                         </tr>
 260                         <tr>
 261                                 <td class='mw-label'>" .
 262                                         Xml::label( wfMsg( 'movereason' ), 'wpReason' ) .
 263                                 "</td>
 264                                 <td class='mw-input'>" .
 265                                         Html::element( 'textarea', array( 'name' => 'wpReason', 'id' => 'wpReason', 'cols' => 60, 'rows' => 2,
 266                                         'maxlength' => 200 ), $this->reason ) . // maxlength byte limit is enforce in mediawiki.special.movePage.js
 267                                 "</td>
 268                         </tr>"
 269                 );
 270
 271                 if( $considerTalk ) {
 272                         $out->addHTML( "
 273                                 <tr>
 274                                         <td></td>
 275                                         <td class='mw-input'>" .
 276                                                 Xml::checkLabel( wfMsg( 'movetalk' ), 'wpMovetalk', 'wpMovetalk', $this->moveTalk ) .
 277                                         "</td>
 278                                 </tr>"
 279                         );
 280                 }
 281
 282                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 283                         $out->addHTML( "
 284                                 <tr>
 285                                         <td></td>
 286                                         <td class='mw-input' >" .
 287                                                 Xml::checkLabel( wfMsg( 'move-leave-redirect' ), 'wpLeaveRedirect',
 288                                                         'wpLeaveRedirect', $this->leaveRedirect ) .
 289                                         "</td>
 290                                 </tr>"
 291                         );
 292                 }
 293
 294                 if ( $hasRedirects ) {
 295                         $out->addHTML( "
 296                                 <tr>
 297                                         <td></td>
 298                                         <td class='mw-input' >" .
 299                                                 Xml::checkLabel( wfMsg( 'fix-double-redirects' ), 'wpFixRedirects',
 300                                                         'wpFixRedirects', $this->fixRedirects ) .
 301                                         "</td>
 302                                 </tr>"
 303                         );
 304                 }
 305
 306                 if( $canMoveSubpage ) {
 307                         $out->addHTML( "
 308                                 <tr>
 309                                         <td></td>
 310                                         <td class=\"mw-input\">" .
 311                                 Xml::check(
 312                                         'wpMovesubpages',
 313                                         # Don't check the box if we only have talk subpages to
 314                                         # move and we aren't moving the talk page.
 315                                         $this->moveSubpages && ($this->oldTitle->hasSubpages() || $this->moveTalk),
 316                                         array( 'id' => 'wpMovesubpages' )
 317                                 ) . '&#160;' .
 318                                 Xml::tags( 'label', array( 'for' => 'wpMovesubpages' ),
 319                                         wfMsgExt(
 320                                                 ( $this->oldTitle->hasSubpages()
 321                                                         ? 'move-subpages'
 322                                                         : 'move-talk-subpages' ),
 323                                                 array( 'parseinline' ),
 324                                                 $this->getLanguage()->formatNum( $wgMaximumMovedPages ),
 325                                                 # $2 to allow use of PLURAL in message.
 326                                                 $wgMaximumMovedPages
 327                                         )
 328                                 ) .
 329                                         "</td>
 330                                 </tr>"
 331                         );
 332                 }
 333
 334                 $watchChecked = $user->isLoggedIn() && ($this->watch || $user->getBoolOption( 'watchmoves' )
 335                         || $this->oldTitle->userIsWatching());
 336                 # Don't allow watching if user is not logged in
 337                 if( $user->isLoggedIn() ) {
 338                         $out->addHTML( "
 339                         <tr>
 340                                 <td></td>
 341                                 <td class='mw-input'>" .
 342                                         Xml::checkLabel( wfMsg( 'move-watch' ), 'wpWatch', 'watch', $watchChecked ) .
 343                                 "</td>
 344                         </tr>");
 345                 }
 346
 347                 $out->addHTML( "
 348                                 {$confirm}
 349                         <tr>
 350                                 <td>&#160;</td>
 351                                 <td class='mw-submit'>" .
 352                                         Xml::submitButton( $movepagebtn, array( 'name' => $submitVar ) ) .
 353                                 "</td>
 354                         </tr>" .
 355                         Xml::closeElement( 'table' ) .
 356                         Html::hidden( 'wpEditToken', $user->getEditToken() ) .
 357                         Xml::closeElement( 'fieldset' ) .
 358                         Xml::closeElement( 'form' ) .
 359                         "\n"
 360                 );
 361
 362                 $this->showLogFragment( $this->oldTitle );
 363                 $this->showSubpages( $this->oldTitle );
 364
 365         }
 366
 367         function doSubmit() {
 368                 global $wgMaximumMovedPages, $wgFixDoubleRedirects, $wgDeleteRevisionsLimit;
 369
 370                 $user = $this->getUser();
 371
 372                 if ( $user->pingLimiter( 'move' ) ) {
 373                         throw new ThrottledError;
 374                 }
 375
 376                 $ot = $this->oldTitle;
 377                 $nt = $this->newTitle;
 378
 379                 # don't allow moving to pages with # in
 380                 if ( !$nt || $nt->getFragment() != '' ) {
 381                         $this->showForm( array( array( 'badtitletext' ) ) );
 382                         return;
 383                 }
 384
 385                 # Show a warning if the target file exists on a shared repo
 386                 if ( $nt->getNamespace() == NS_FILE
 387                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 388                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 389                         && wfFindFile( $nt ) )
 390                 {
 391                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 392                         return;
 393
 394                 }
 395
 396                 # Delete to make way if requested
 397                 if ( $this->deleteAndMove ) {
 398                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 399                         if ( count( $permErrors ) ) {
 400                                 # Only show the first error
 401                                 $this->showForm( $permErrors );
 402                                 return;
 403                         }
 404
 405                         $reason = wfMessage( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 406
 407                         // Delete an associated image if there is
 408                         if ( $nt->getNamespace() == NS_FILE ) {
 409                                 $file = wfLocalFile( $nt );
 410                                 if ( $file->exists() ) {
 411                                         $file->delete( $reason, false );
 412                                 }
 413                         }
 414
 415                         $error = ''; // passed by ref
 416                         $page = WikiPage::factory( $nt );
 417                         if ( !$page->doDeleteArticle( $reason, false, 0, true, $error, $user ) ) {
 418                                 $this->showForm( array( array( 'cannotdelete', wfEscapeWikiText( $nt->getPrefixedText() ) ) ) );
 419                                 return;
 420                         }
 421                 }
 422
 423                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 424                         $createRedirect = $this->leaveRedirect;
 425                 } else {
 426                         $createRedirect = true;
 427                 }
 428
 429                 # Do the actual move.
 430                 $error = $ot->moveTo( $nt, true, $this->reason, $createRedirect );
 431                 if ( $error !== true ) {
 432                         $this->showForm( $error );
 433                         return;
 434                 }
 435
 436                 if ( $wgFixDoubleRedirects && $this->fixRedirects ) {
 437                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 438                 }
 439
 440                 wfRunHooks( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 441
 442                 $out = $this->getOutput();
 443                 $out->setPagetitle( wfMsg( 'pagemovedsub' ) );
 444
 445                 $oldLink = Linker::link(
 446                         $ot,
 447                         null,
 448                         array(),
 449                         array( 'redirect' => 'no' )
 450                 );
 451                 $newLink = Linker::linkKnown( $nt );
 452                 $oldText = $ot->getPrefixedText();
 453                 $newText = $nt->getPrefixedText();
 454
 455                 $msgName = $createRedirect ? 'movepage-moved-redirect' : 'movepage-moved-noredirect';
 456                 $out->addHTML( wfMessage( 'movepage-moved' )->rawParams( $oldLink, $newLink, $oldText, $newText )->parseAsBlock() );
 457                 $out->addWikiMsg( $msgName );
 458
 459                 # Now we move extra pages we've been asked to move: subpages and talk
 460                 # pages.  First, if the old page or the new page is a talk page, we
 461                 # can't move any talk pages: cancel that.
 462                 if( $ot->isTalkPage() || $nt->isTalkPage() ) {
 463                         $this->moveTalk = false;
 464                 }
 465
 466                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 467                         $this->moveSubpages = false;
 468                 }
 469
 470                 # Next make a list of id's.  This might be marginally less efficient
 471                 # than a more direct method, but this is not a highly performance-cri-
 472                 # tical code path and readable code is more important here.
 473                 #
 474                 # Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 475                 # 4 might get confused.  If so, consider rewriting as a UNION.
 476                 #
 477                 # If the target namespace doesn't allow subpages, moving with subpages
 478                 # would mean that you couldn't move them back in one operation, which
 479                 # is bad.
 480                 # @todo FIXME: A specific error message should be given in this case.
 481
 482                 // @todo FIXME: Use Title::moveSubpages() here
 483                 $dbr = wfGetDB( DB_MASTER );
 484                 if( $this->moveSubpages && (
 485                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 486                                 $this->moveTalk &&
 487                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 488                         )
 489                 ) ) {
 490                         $conds = array(
 491                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 492                                         .' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 493                         );
 494                         $conds['page_namespace'] = array();
 495                         if( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 496                                 $conds['page_namespace'] []= $ot->getNamespace();
 497                         }
 498                         if( $this->moveTalk && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() ) ) {
 499                                 $conds['page_namespace'] []= $ot->getTalkPage()->getNamespace();
 500                         }
 501                 } elseif( $this->moveTalk ) {
 502                         $conds = array(
 503                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 504                                 'page_title' => $ot->getDBkey()
 505                         );
 506                 } else {
 507                         # Skip the query
 508                         $conds = null;
 509                 }
 510
 511                 $extraPages = array();
 512                 if( !is_null( $conds ) ) {
 513                         $extraPages = TitleArray::newFromResult(
 514                                 $dbr->select( 'page',
 515                                         array( 'page_id', 'page_namespace', 'page_title' ),
 516                                         $conds,
 517                                         __METHOD__
 518                                 )
 519                         );
 520                 }
 521
 522                 $extraOutput = array();
 523                 $count = 1;
 524                 foreach( $extraPages as $oldSubpage ) {
 525                         if( $ot->equals( $oldSubpage ) ) {
 526                                 # Already did this one.
 527                                 continue;
 528                         }
 529
 530                         $newPageName = preg_replace(
 531                                 '#^'.preg_quote( $ot->getDBkey(), '#' ).'#',
 532                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 533                                 $oldSubpage->getDBkey()
 534                         );
 535                         if( $oldSubpage->isTalkPage() ) {
 536                                 $newNs = $nt->getTalkPage()->getNamespace();
 537                         } else {
 538                                 $newNs = $nt->getSubjectPage()->getNamespace();
 539                         }
 540                         # Bug 14385: we need makeTitleSafe because the new page names may
 541                         # be longer than 255 characters.
 542                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 543                         if( !$newSubpage ) {
 544                                 $oldLink = Linker::linkKnown( $oldSubpage );
 545                                 $extraOutput []= wfMsgHtml( 'movepage-page-unmoved', $oldLink,
 546                                         htmlspecialchars(Title::makeName( $newNs, $newPageName )));
 547                                 continue;
 548                         }
 549
 550                         # This was copy-pasted from Renameuser, bleh.
 551                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 552                                 $link = Linker::linkKnown( $newSubpage );
 553                                 $extraOutput []= wfMsgHtml( 'movepage-page-exists', $link );
 554                         } else {
 555                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 556                                 if( $success === true ) {
 557                                         if ( $this->fixRedirects ) {
 558                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 559                                         }
 560                                         $oldLink = Linker::link(
 561                                                 $oldSubpage,
 562                                                 null,
 563                                                 array(),
 564                                                 array( 'redirect' => 'no' )
 565                                         );
 566                                         $newLink = Linker::linkKnown( $newSubpage );
 567                                         $extraOutput []= wfMsgHtml( 'movepage-page-moved', $oldLink, $newLink );
 568                                         ++$count;
 569                                         if( $count >= $wgMaximumMovedPages ) {
 570                                                 $extraOutput []= wfMsgExt( 'movepage-max-pages', array( 'parsemag', 'escape' ), $this->getLanguage()->formatNum( $wgMaximumMovedPages ) );
 571                                                 break;
 572                                         }
 573                                 } else {
 574                                         $oldLink = Linker::linkKnown( $oldSubpage );
 575                                         $newLink = Linker::link( $newSubpage );
 576                                         $extraOutput []= wfMsgHtml( 'movepage-page-unmoved', $oldLink, $newLink );
 577                                 }
 578                         }
 579
 580                 }
 581
 582                 if( $extraOutput !== array() ) {
 583                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 584                 }
 585
 586                 # Deal with watches (we don't watch subpages)
 587                 if( $this->watch && $user->isLoggedIn() ) {
 588                         $user->addWatch( $ot );
 589                         $user->addWatch( $nt );
 590                 } else {
 591                         $user->removeWatch( $ot );
 592                         $user->removeWatch( $nt );
 593                 }
 594
 595                 # Re-clear the file redirect cache, which may have been polluted by
 596                 # parsing in messages above. See CR r56745.
 597                 # @todo FIXME: Needs a more robust solution inside FileRepo.
 598                 if( $ot->getNamespace() == NS_FILE ) {
 599                         RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $ot );
 600                 }
 601         }
 602
 603         function showLogFragment( $title ) {
 604                 $out = $this->getOutput();
 605                 $out->addHTML( Xml::element( 'h2', null, LogPage::logName( 'move' ) ) );
 606                 LogEventsList::showLogExtract( $out, 'move', $title );
 607         }
 608
 609         function showSubpages( $title ) {
 610                 if( !MWNamespace::hasSubpages( $title->getNamespace() ) )
 611                         return;
 612
 613                 $subpages = $title->getSubpages();
 614                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 615
 616                 $out = $this->getOutput();
 617                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 618
 619                 # No subpages.
 620                 if ( $count == 0 ) {
 621                         $out->addWikiMsg( 'movenosubpage' );
 622                         return;
 623                 }
 624
 625                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 626                 $out->addHTML( "<ul>\n" );
 627
 628                 foreach( $subpages as $subpage ) {
 629                         $link = Linker::link( $subpage );
 630                         $out->addHTML( "<li>$link</li>\n" );
 631                 }
 632                 $out->addHTML( "</ul>\n" );
 633         }
 634 }