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
  55                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  56                 $this->oldTitle = Title::newFromText( $oldTitleText );
  57
  58                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  59                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  60                 // Backwards compatibility for forms submitting here from other sources
  61                 // which is more common than it should be..
  62                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  63                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  64                         ? Title::newFromText( $newTitleText_bc )
  65                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
  66
  67                 if( is_null( $this->oldTitle ) ) {
  68                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  69                 }
  70                 if( !$this->oldTitle->exists() ) {
  71                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  72                 }
  73
  74                 $user = $this->getUser();
  75
  76                 # Check rights
  77                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
  78                 if ( count( $permErrors ) ) {
  79                         // Auto-block user's IP if the account was "hard" blocked
  80                         $user->spreadAnyEditBlock();
  81                         throw new PermissionsError( 'move', $permErrors );
  82                 }
  83
  84                 $def = !$request->wasPosted();
  85
  86                 $this->reason = $request->getText( 'wpReason' );
  87                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
  88                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
  89                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
  90                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
  91                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
  92                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
  93                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
  94
  95                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
  96                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) ) ) {
  97                         $this->doSubmit();
  98                 } else {
  99                         $this->showForm( array() );
 100                 }
 101         }
 102
 103         /**
 104          * Show the form
 105          *
 106          * @param $err Array: error messages. Each item is an error message.
 107          *    It may either be a string message name or array message name and
 108          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 109          */
 110         function showForm( $err ) {
 111                 global $wgContLang, $wgFixDoubleRedirects, $wgMaximumMovedPages;
 112
 113                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 114
 115                 $oldTitleLink = Linker::link( $this->oldTitle );
 116
 117                 $out = $this->getOutput();
 118                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 119                 $out->addModules( 'mediawiki.special.movePage' );
 120
 121                 $newTitle = $this->newTitle;
 122
 123                 if ( !$newTitle ) {
 124                         # Show the current title as a default
 125                         # when the form is first opened.
 126                         $newTitle = $this->oldTitle;
 127                 } elseif ( !count( $err ) ) {
 128                         # If a title was supplied, probably from the move log revert
 129                         # link, check for validity. We can then show some diagnostic
 130                         # information and save a click.
 131                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 132                         if( is_array( $newerr ) ) {
 133                                 $err = $newerr;
 134                         }
 135                 }
 136
 137                 $user = $this->getUser();
 138
 139                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 140                         && $newTitle->quickUserCan( 'delete', $user )
 141                 ) {
 142                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 143                         $movepagebtn = wfMsg( 'delete_and_move' );
 144                         $submitVar = 'wpDeleteAndMove';
 145                         $confirm = "
 146                                 <tr>
 147                                         <td></td>
 148                                         <td class='mw-input'>" .
 149                                                 Xml::checkLabel( wfMsg( 'delete_and_move_confirm' ), 'wpConfirm', 'wpConfirm' ) .
 150                                         "</td>
 151                                 </tr>";
 152                         $err = array();
 153                 } else {
 154                         if ($this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 155                                 $out->wrapWikiMsg( "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>", 'moveuserpage-warning' );
 156                         }
 157                         $out->addWikiMsg( $wgFixDoubleRedirects ? 'movepagetext' :
 158                                 'movepagetext-noredirectfixer' );
 159                         $movepagebtn = wfMsg( 'movepagebtn' );
 160                         $submitVar = 'wpMove';
 161                         $confirm = false;
 162                 }
 163
 164                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 165                         && $user->isAllowed( 'reupload-shared' )
 166                 ) {
 167                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 168                         $submitVar = 'wpMoveOverSharedFile';
 169                         $err = array();
 170                 }
 171
 172                 $oldTalk = $this->oldTitle->getTalkPage();
 173                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 174                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 175
 176                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 177                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 178
 179                 # We also want to be able to move assoc. subpage talk-pages even if base page
 180                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 181                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 182                         ( $oldTalk->exists()
 183                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 184
 185                 $dbr = wfGetDB( DB_SLAVE );
 186                 if ( $wgFixDoubleRedirects ) {
 187                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 188                                 array(
 189                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 190                                         'rd_title' => $this->oldTitle->getDBkey(),
 191                                 ) , __METHOD__ );
 192                 } else {
 193                         $hasRedirects = false;
 194                 }
 195
 196                 if ( $considerTalk ) {
 197                         $out->addWikiMsg( 'movepagetalktext' );
 198                 }
 199
 200                 if ( count( $err ) ) {
 201                         $out->addHTML( "<div class='error'>\n" );
 202                         $action_desc = $this->msg( 'action-move' )->plain();
 203                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 204
 205                         if ( count( $err ) == 1 ) {
 206                                 $errMsg = $err[0];
 207                                 $errMsgName = array_shift( $errMsg );
 208                                 if ( $errMsgName == 'hookaborted' ) {
 209                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 210                                 } else {
 211                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 212                                 }
 213                         } else {
 214                                 $errStr = array();
 215                                 foreach( $err as $errMsg ) {
 216                                         if( $errMsg[0] == 'hookaborted' ) {
 217                                                 $errStr[] = $errMsg[1];
 218                                         } else {
 219                                                 $errMsgName = array_shift( $errMsg );
 220                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 221                                         }
 222                                 }
 223
 224                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 225                         }
 226                         $out->addHTML( "</div>\n" );
 227                 }
 228
 229                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 230                         # Is the title semi-protected?
 231                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 232                                 $noticeMsg = 'semiprotectedpagemovewarning';
 233                                 $classes[] = 'mw-textarea-sprotected';
 234                         } else {
 235                                 # Then it must be protected based on static groups (regular)
 236                                 $noticeMsg = 'protectedpagemovewarning';
 237                                 $classes[] = 'mw-textarea-protected';
 238                         }
 239                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 240                         $out->addWikiMsg( $noticeMsg );
 241                         LogEventsList::showLogExtract( $out, 'protect', $this->oldTitle, '', array( 'lim' => 1 ) );
 242                         $out->addHTML( "</div>\n" );
 243                 }
 244
 245                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 246                 // is enforced in the mediawiki.special.movePage module
 247
 248                 $out->addHTML(
 249                          Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->getTitle()->getLocalURL( 'action=submit' ), 'id' => 'movepage' ) ) .
 250                          Xml::openElement( 'fieldset' ) .
 251                          Xml::element( 'legend', null, wfMsg( 'move-page-legend' ) ) .
 252                          Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-movepage-table' ) ) .
 253                          "<tr>
 254                                 <td class='mw-label'>" .
 255                                         wfMsgHtml( 'movearticle' ) .
 256                                 "</td>
 257                                 <td class='mw-input'>
 258                                         <strong>{$oldTitleLink}</strong>
 259                                 </td>
 260                         </tr>
 261                         <tr>
 262                                 <td class='mw-label'>" .
 263                                         Xml::label( wfMsg( 'newtitle' ), 'wpNewTitleMain' ) .
 264                                 "</td>
 265                                 <td class='mw-input'>" .
 266                                         Html::namespaceSelector(
 267                                                 array( 'selected' => $newTitle->getNamespace() ),
 268                                                 array( 'name' => 'wpNewTitleNs', 'id' => 'wpNewTitleNs' )
 269                                         ) .
 270                                         Xml::input( 'wpNewTitleMain', 60, $wgContLang->recodeForEdit( $newTitle->getText() ), array(
 271                                                 'type' => 'text',
 272                                                 'id' => 'wpNewTitleMain',
 273                                                 'maxlength' => 255,
 274                                         ) ) .
 275                                         Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 276                                 "</td>
 277                         </tr>
 278                         <tr>
 279                                 <td class='mw-label'>" .
 280                                         Xml::label( wfMsg( 'movereason' ), 'wpReason' ) .
 281                                 "</td>
 282                                 <td class='mw-input'>" .
 283                                         Html::element( 'textarea', array( 'name' => 'wpReason', 'id' => 'wpReason', 'cols' => 60, 'rows' => 2,
 284                                         'maxlength' => 200 ), $this->reason ) .
 285                                 "</td>
 286                         </tr>"
 287                 );
 288
 289                 if( $considerTalk ) {
 290                         $out->addHTML( "
 291                                 <tr>
 292                                         <td></td>
 293                                         <td class='mw-input'>" .
 294                                                 Xml::checkLabel( wfMsg( 'movetalk' ), 'wpMovetalk', 'wpMovetalk', $this->moveTalk ) .
 295                                         "</td>
 296                                 </tr>"
 297                         );
 298                 }
 299
 300                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 301                         $out->addHTML( "
 302                                 <tr>
 303                                         <td></td>
 304                                         <td class='mw-input' >" .
 305                                                 Xml::checkLabel( wfMsg( 'move-leave-redirect' ), 'wpLeaveRedirect',
 306                                                         'wpLeaveRedirect', $this->leaveRedirect ) .
 307                                         "</td>
 308                                 </tr>"
 309                         );
 310                 }
 311
 312                 if ( $hasRedirects ) {
 313                         $out->addHTML( "
 314                                 <tr>
 315                                         <td></td>
 316                                         <td class='mw-input' >" .
 317                                                 Xml::checkLabel( wfMsg( 'fix-double-redirects' ), 'wpFixRedirects',
 318                                                         'wpFixRedirects', $this->fixRedirects ) .
 319                                         "</td>
 320                                 </tr>"
 321                         );
 322                 }
 323
 324                 if( $canMoveSubpage ) {
 325                         $out->addHTML( "
 326                                 <tr>
 327                                         <td></td>
 328                                         <td class=\"mw-input\">" .
 329                                 Xml::check(
 330                                         'wpMovesubpages',
 331                                         # Don't check the box if we only have talk subpages to
 332                                         # move and we aren't moving the talk page.
 333                                         $this->moveSubpages && ($this->oldTitle->hasSubpages() || $this->moveTalk),
 334                                         array( 'id' => 'wpMovesubpages' )
 335                                 ) . '&#160;' .
 336                                 Xml::tags( 'label', array( 'for' => 'wpMovesubpages' ),
 337                                         wfMsgExt(
 338                                                 ( $this->oldTitle->hasSubpages()
 339                                                         ? 'move-subpages'
 340                                                         : 'move-talk-subpages' ),
 341                                                 array( 'parseinline' ),
 342                                                 $this->getLanguage()->formatNum( $wgMaximumMovedPages ),
 343                                                 # $2 to allow use of PLURAL in message.
 344                                                 $wgMaximumMovedPages
 345                                         )
 346                                 ) .
 347                                         "</td>
 348                                 </tr>"
 349                         );
 350                 }
 351
 352                 $watchChecked = $user->isLoggedIn() && ($this->watch || $user->getBoolOption( 'watchmoves' )
 353                         || $this->oldTitle->userIsWatching());
 354                 # Don't allow watching if user is not logged in
 355                 if( $user->isLoggedIn() ) {
 356                         $out->addHTML( "
 357                         <tr>
 358                                 <td></td>
 359                                 <td class='mw-input'>" .
 360                                         Xml::checkLabel( wfMsg( 'move-watch' ), 'wpWatch', 'watch', $watchChecked ) .
 361                                 "</td>
 362                         </tr>");
 363                 }
 364
 365                 $out->addHTML( "
 366                                 {$confirm}
 367                         <tr>
 368                                 <td>&#160;</td>
 369                                 <td class='mw-submit'>" .
 370                                         Xml::submitButton( $movepagebtn, array( 'name' => $submitVar ) ) .
 371                                 "</td>
 372                         </tr>" .
 373                         Xml::closeElement( 'table' ) .
 374                         Html::hidden( 'wpEditToken', $user->getEditToken() ) .
 375                         Xml::closeElement( 'fieldset' ) .
 376                         Xml::closeElement( 'form' ) .
 377                         "\n"
 378                 );
 379
 380                 $this->showLogFragment( $this->oldTitle );
 381                 $this->showSubpages( $this->oldTitle );
 382
 383         }
 384
 385         function doSubmit() {
 386                 global $wgMaximumMovedPages, $wgFixDoubleRedirects;
 387
 388                 $user = $this->getUser();
 389
 390                 if ( $user->pingLimiter( 'move' ) ) {
 391                         throw new ThrottledError;
 392                 }
 393
 394                 $ot = $this->oldTitle;
 395                 $nt = $this->newTitle;
 396
 397                 # don't allow moving to pages with # in
 398                 if ( !$nt || $nt->getFragment() != '' ) {
 399                         $this->showForm( array( array( 'badtitletext' ) ) );
 400                         return;
 401                 }
 402
 403                 # Show a warning if the target file exists on a shared repo
 404                 if ( $nt->getNamespace() == NS_FILE
 405                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 406                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 407                         && wfFindFile( $nt ) )
 408                 {
 409                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 410                         return;
 411
 412                 }
 413
 414                 # Delete to make way if requested
 415                 if ( $this->deleteAndMove ) {
 416                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 417                         if ( count( $permErrors ) ) {
 418                                 # Only show the first error
 419                                 $this->showForm( $permErrors );
 420                                 return;
 421                         }
 422
 423                         $reason = wfMessage( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 424
 425                         // Delete an associated image if there is
 426                         if ( $nt->getNamespace() == NS_FILE ) {
 427                                 $file = wfLocalFile( $nt );
 428                                 if ( $file->exists() ) {
 429                                         $file->delete( $reason, false );
 430                                 }
 431                         }
 432
 433                         $error = ''; // passed by ref
 434                         $page = WikiPage::factory( $nt );
 435                         if ( !$page->doDeleteArticle( $reason, false, 0, true, $error, $user ) ) {
 436                                 $this->showForm( array( array( 'cannotdelete', wfEscapeWikiText( $nt->getPrefixedText() ) ) ) );
 437                                 return;
 438                         }
 439                 }
 440
 441                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 442                         $createRedirect = $this->leaveRedirect;
 443                 } else {
 444                         $createRedirect = true;
 445                 }
 446
 447                 # Do the actual move.
 448                 $error = $ot->moveTo( $nt, true, $this->reason, $createRedirect );
 449                 if ( $error !== true ) {
 450                         $this->showForm( $error );
 451                         return;
 452                 }
 453
 454                 if ( $wgFixDoubleRedirects && $this->fixRedirects ) {
 455                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 456                 }
 457
 458                 wfRunHooks( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 459
 460                 $out = $this->getOutput();
 461                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 462
 463                 $oldLink = Linker::link(
 464                         $ot,
 465                         null,
 466                         array(),
 467                         array( 'redirect' => 'no' )
 468                 );
 469                 $newLink = Linker::linkKnown( $nt );
 470                 $oldText = $ot->getPrefixedText();
 471                 $newText = $nt->getPrefixedText();
 472
 473                 $msgName = $createRedirect ? 'movepage-moved-redirect' : 'movepage-moved-noredirect';
 474                 $out->addHTML( wfMessage( 'movepage-moved' )->rawParams( $oldLink, $newLink, $oldText, $newText )->parseAsBlock() );
 475                 $out->addWikiMsg( $msgName );
 476
 477                 # Now we move extra pages we've been asked to move: subpages and talk
 478                 # pages.  First, if the old page or the new page is a talk page, we
 479                 # can't move any talk pages: cancel that.
 480                 if( $ot->isTalkPage() || $nt->isTalkPage() ) {
 481                         $this->moveTalk = false;
 482                 }
 483
 484                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 485                         $this->moveSubpages = false;
 486                 }
 487
 488                 # Next make a list of id's.  This might be marginally less efficient
 489                 # than a more direct method, but this is not a highly performance-cri-
 490                 # tical code path and readable code is more important here.
 491                 #
 492                 # Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 493                 # 4 might get confused.  If so, consider rewriting as a UNION.
 494                 #
 495                 # If the target namespace doesn't allow subpages, moving with subpages
 496                 # would mean that you couldn't move them back in one operation, which
 497                 # is bad.
 498                 # @todo FIXME: A specific error message should be given in this case.
 499
 500                 // @todo FIXME: Use Title::moveSubpages() here
 501                 $dbr = wfGetDB( DB_MASTER );
 502                 if( $this->moveSubpages && (
 503                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 504                                 $this->moveTalk &&
 505                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 506                         )
 507                 ) ) {
 508                         $conds = array(
 509                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 510                                         .' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 511                         );
 512                         $conds['page_namespace'] = array();
 513                         if( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 514                                 $conds['page_namespace'] []= $ot->getNamespace();
 515                         }
 516                         if( $this->moveTalk && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() ) ) {
 517                                 $conds['page_namespace'] []= $ot->getTalkPage()->getNamespace();
 518                         }
 519                 } elseif( $this->moveTalk ) {
 520                         $conds = array(
 521                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 522                                 'page_title' => $ot->getDBkey()
 523                         );
 524                 } else {
 525                         # Skip the query
 526                         $conds = null;
 527                 }
 528
 529                 $extraPages = array();
 530                 if( !is_null( $conds ) ) {
 531                         $extraPages = TitleArray::newFromResult(
 532                                 $dbr->select( 'page',
 533                                         array( 'page_id', 'page_namespace', 'page_title' ),
 534                                         $conds,
 535                                         __METHOD__
 536                                 )
 537                         );
 538                 }
 539
 540                 $extraOutput = array();
 541                 $count = 1;
 542                 foreach( $extraPages as $oldSubpage ) {
 543                         if( $ot->equals( $oldSubpage ) ) {
 544                                 # Already did this one.
 545                                 continue;
 546                         }
 547
 548                         $newPageName = preg_replace(
 549                                 '#^'.preg_quote( $ot->getDBkey(), '#' ).'#',
 550                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 551                                 $oldSubpage->getDBkey()
 552                         );
 553                         if( $oldSubpage->isTalkPage() ) {
 554                                 $newNs = $nt->getTalkPage()->getNamespace();
 555                         } else {
 556                                 $newNs = $nt->getSubjectPage()->getNamespace();
 557                         }
 558                         # Bug 14385: we need makeTitleSafe because the new page names may
 559                         # be longer than 255 characters.
 560                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 561                         if( !$newSubpage ) {
 562                                 $oldLink = Linker::linkKnown( $oldSubpage );
 563                                 $extraOutput []= wfMsgHtml( 'movepage-page-unmoved', $oldLink,
 564                                         htmlspecialchars(Title::makeName( $newNs, $newPageName )));
 565                                 continue;
 566                         }
 567
 568                         # This was copy-pasted from Renameuser, bleh.
 569                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 570                                 $link = Linker::linkKnown( $newSubpage );
 571                                 $extraOutput []= wfMsgHtml( 'movepage-page-exists', $link );
 572                         } else {
 573                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 574                                 if( $success === true ) {
 575                                         if ( $this->fixRedirects ) {
 576                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 577                                         }
 578                                         $oldLink = Linker::link(
 579                                                 $oldSubpage,
 580                                                 null,
 581                                                 array(),
 582                                                 array( 'redirect' => 'no' )
 583                                         );
 584                                         $newLink = Linker::linkKnown( $newSubpage );
 585                                         $extraOutput []= wfMsgHtml( 'movepage-page-moved', $oldLink, $newLink );
 586                                         ++$count;
 587                                         if( $count >= $wgMaximumMovedPages ) {
 588                                                 $extraOutput []= wfMsgExt( 'movepage-max-pages', array( 'parsemag', 'escape' ), $this->getLanguage()->formatNum( $wgMaximumMovedPages ) );
 589                                                 break;
 590                                         }
 591                                 } else {
 592                                         $oldLink = Linker::linkKnown( $oldSubpage );
 593                                         $newLink = Linker::link( $newSubpage );
 594                                         $extraOutput []= wfMsgHtml( 'movepage-page-unmoved', $oldLink, $newLink );
 595                                 }
 596                         }
 597
 598                 }
 599
 600                 if( $extraOutput !== array() ) {
 601                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 602                 }
 603
 604                 # Deal with watches (we don't watch subpages)
 605                 if( $this->watch && $user->isLoggedIn() ) {
 606                         $user->addWatch( $ot );
 607                         $user->addWatch( $nt );
 608                 } else {
 609                         $user->removeWatch( $ot );
 610                         $user->removeWatch( $nt );
 611                 }
 612
 613                 # Re-clear the file redirect cache, which may have been polluted by
 614                 # parsing in messages above. See CR r56745.
 615                 # @todo FIXME: Needs a more robust solution inside FileRepo.
 616                 if( $ot->getNamespace() == NS_FILE ) {
 617                         RepoGroup::singleton()->getLocalRepo()->invalidateImageRedirect( $ot );
 618                 }
 619         }
 620
 621         function showLogFragment( $title ) {
 622                 $out = $this->getOutput();
 623                 $out->addHTML( Xml::element( 'h2', null, LogPage::logName( 'move' ) ) );
 624                 LogEventsList::showLogExtract( $out, 'move', $title );
 625         }
 626
 627         function showSubpages( $title ) {
 628                 if( !MWNamespace::hasSubpages( $title->getNamespace() ) )
 629                         return;
 630
 631                 $subpages = $title->getSubpages();
 632                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 633
 634                 $out = $this->getOutput();
 635                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 636
 637                 # No subpages.
 638                 if ( $count == 0 ) {
 639                         $out->addWikiMsg( 'movenosubpage' );
 640                         return;
 641                 }
 642
 643                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 644                 $out->addHTML( "<ul>\n" );
 645
 646                 foreach( $subpages as $subpage ) {
 647                         $link = Linker::link( $subpage );
 648                         $out->addHTML( "<li>$link</li>\n" );
 649                 }
 650                 $out->addHTML( "</ul>\n" );
 651         }
 652 }