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          * Objects
  32          * @var Title
  33          */
  34         var $oldTitle, $newTitle;
  35         // Text input
  36         var $reason;
  37         // Checks
  38         var $moveTalk, $deleteAndMove, $moveSubpages, $fixRedirects, $leaveRedirect, $moveOverShared;
  39
  40         private $watch = false;
  41
  42         public function __construct() {
  43                 parent::__construct( 'Movepage' );
  44         }
  45
  46         public function execute( $par ) {
  47                 $this->checkReadOnly();
  48
  49                 $this->setHeaders();
  50                 $this->outputHeader();
  51
  52                 $request = $this->getRequest();
  53                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  54
  55                 // Yes, the use of getVal() and getText() is wanted, see bug 20365
  56
  57                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  58                 $this->oldTitle = Title::newFromText( $oldTitleText );
  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                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  68                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  69                 // Backwards compatibility for forms submitting here from other sources
  70                 // which is more common than it should be..
  71                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  72                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  73                         ? Title::newFromText( $newTitleText_bc )
  74                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
  75
  76                 $user = $this->getUser();
  77
  78                 # Check rights
  79                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
  80                 if ( count( $permErrors ) ) {
  81                         // Auto-block user's IP if the account was "hard" blocked
  82                         $user->spreadAnyEditBlock();
  83                         throw new PermissionsError( 'move', $permErrors );
  84                 }
  85
  86                 $def = !$request->wasPosted();
  87
  88                 $this->reason = $request->getText( 'wpReason' );
  89                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
  90                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
  91                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
  92                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
  93                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
  94                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
  95                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
  96
  97                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
  98                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
  99                 ) {
 100                         $this->doSubmit();
 101                 } else {
 102                         $this->showForm( array() );
 103                 }
 104         }
 105
 106         /**
 107          * Show the form
 108          *
 109          * @param array $err error messages. Each item is an error message.
 110          *    It may either be a string message name or array message name and
 111          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 112          */
 113         function showForm( $err ) {
 114                 global $wgContLang, $wgFixDoubleRedirects, $wgMaximumMovedPages;
 115
 116                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 117
 118                 $oldTitleLink = Linker::link( $this->oldTitle );
 119
 120                 $out = $this->getOutput();
 121                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 122                 $out->addModules( 'mediawiki.special.movePage' );
 123
 124                 $newTitle = $this->newTitle;
 125
 126                 if ( !$newTitle ) {
 127                         # Show the current title as a default
 128                         # when the form is first opened.
 129                         $newTitle = $this->oldTitle;
 130                 } elseif ( !count( $err ) ) {
 131                         # If a title was supplied, probably from the move log revert
 132                         # link, check for validity. We can then show some diagnostic
 133                         # information and save a click.
 134                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 135                         if ( is_array( $newerr ) ) {
 136                                 $err = $newerr;
 137                         }
 138                 }
 139
 140                 $user = $this->getUser();
 141
 142                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 143                         && $newTitle->quickUserCan( 'delete', $user )
 144                 ) {
 145                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 146                         $movepagebtn = $this->msg( 'delete_and_move' )->text();
 147                         $submitVar = 'wpDeleteAndMove';
 148                         $confirm = "
 149                                 <tr>
 150                                         <td></td>
 151                                         <td class='mw-input'>" .
 152                                 Xml::checkLabel(
 153                                         $this->msg( 'delete_and_move_confirm' )->text(),
 154                                         'wpConfirm',
 155                                         'wpConfirm'
 156                                 ) .
 157                                 "</td>
 158                                 </tr>";
 159                         $err = array();
 160                 } else {
 161                         if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 162                                 $out->wrapWikiMsg(
 163                                         "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 164                                         'moveuserpage-warning'
 165                                 );
 166                         }
 167
 168                         $out->addWikiMsg( $wgFixDoubleRedirects ?
 169                                 'movepagetext' :
 170                                 'movepagetext-noredirectfixer'
 171                         );
 172                         $movepagebtn = $this->msg( 'movepagebtn' )->text();
 173                         $submitVar = 'wpMove';
 174                         $confirm = false;
 175                 }
 176
 177                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 178                         && $user->isAllowed( 'reupload-shared' )
 179                 ) {
 180                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 181                         $submitVar = 'wpMoveOverSharedFile';
 182                         $err = array();
 183                 }
 184
 185                 $oldTalk = $this->oldTitle->getTalkPage();
 186                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 187                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 188
 189                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 190                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 191
 192                 # We also want to be able to move assoc. subpage talk-pages even if base page
 193                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 194                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 195                         ( $oldTalk->exists()
 196                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 197
 198                 $dbr = wfGetDB( DB_SLAVE );
 199                 if ( $wgFixDoubleRedirects ) {
 200                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 201                                 array(
 202                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 203                                         'rd_title' => $this->oldTitle->getDBkey(),
 204                                 ), __METHOD__ );
 205                 } else {
 206                         $hasRedirects = false;
 207                 }
 208
 209                 if ( $considerTalk ) {
 210                         $out->addWikiMsg( 'movepagetalktext' );
 211                 }
 212
 213                 if ( count( $err ) ) {
 214                         $out->addHTML( "<div class='error'>\n" );
 215                         $action_desc = $this->msg( 'action-move' )->plain();
 216                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 217
 218                         if ( count( $err ) == 1 ) {
 219                                 $errMsg = $err[0];
 220                                 $errMsgName = array_shift( $errMsg );
 221
 222                                 if ( $errMsgName == 'hookaborted' ) {
 223                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 224                                 } else {
 225                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 226                                 }
 227                         } else {
 228                                 $errStr = array();
 229
 230                                 foreach ( $err as $errMsg ) {
 231                                         if ( $errMsg[0] == 'hookaborted' ) {
 232                                                 $errStr[] = $errMsg[1];
 233                                         } else {
 234                                                 $errMsgName = array_shift( $errMsg );
 235                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 236                                         }
 237                                 }
 238
 239                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 240                         }
 241                         $out->addHTML( "</div>\n" );
 242                 }
 243
 244                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 245                         # Is the title semi-protected?
 246                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 247                                 $noticeMsg = 'semiprotectedpagemovewarning';
 248                                 $classes[] = 'mw-textarea-sprotected';
 249                         } else {
 250                                 # Then it must be protected based on static groups (regular)
 251                                 $noticeMsg = 'protectedpagemovewarning';
 252                                 $classes[] = 'mw-textarea-protected';
 253                         }
 254                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 255                         $out->addWikiMsg( $noticeMsg );
 256                         LogEventsList::showLogExtract(
 257                                 $out,
 258                                 'protect',
 259                                 $this->oldTitle,
 260                                 '',
 261                                 array( 'lim' => 1 )
 262                         );
 263                         $out->addHTML( "</div>\n" );
 264                 }
 265
 266                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 267                 // is enforced in the mediawiki.special.movePage module
 268
 269                 $immovableNamespaces = array();
 270
 271                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 272                         if ( !MWNamespace::isMovable( $nsId ) ) {
 273                                 $immovableNamespaces[] = $nsId;
 274                         }
 275                 }
 276
 277                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 278
 279                 $out->addHTML(
 280                         Xml::openElement(
 281                                 'form',
 282                                 array(
 283                                         'method' => 'post',
 284                                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 285                                         'id' => 'movepage'
 286                                 )
 287                         ) .
 288                                 Xml::openElement( 'fieldset' ) .
 289                                 Xml::element( 'legend', null, $this->msg( 'move-page-legend' )->text() ) .
 290                                 Xml::openElement( 'table', array( 'id' => 'mw-movepage-table' ) ) .
 291                                 "<tr>
 292                                 <td class='mw-label'>" .
 293                                 $this->msg( 'movearticle' )->escaped() .
 294                                 "</td>
 295                                 <td class='mw-input'>
 296                                         <strong>{$oldTitleLink}</strong>
 297                                 </td>
 298                         </tr>
 299                         <tr>
 300                                 <td class='mw-label'>" .
 301                                 Xml::label( $this->msg( 'newtitle' )->text(), 'wpNewTitleMain' ) .
 302                                 "</td>
 303                                 <td class='mw-input'>" .
 304                                 Html::namespaceSelector(
 305                                         array(
 306                                                 'selected' => $newTitle->getNamespace(),
 307                                                 'exclude' => $immovableNamespaces
 308                                         ),
 309                                         array( 'name' => 'wpNewTitleNs', 'id' => 'wpNewTitleNs' )
 310                                 ) .
 311                                 Xml::input(
 312                                         'wpNewTitleMain',
 313                                         60,
 314                                         $wgContLang->recodeForEdit( $newTitle->getText() ),
 315                                         array(
 316                                                 'type' => 'text',
 317                                                 'id' => 'wpNewTitleMain',
 318                                                 'maxlength' => 255
 319                                         )
 320                                 ) .
 321                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 322                                 "</td>
 323                         </tr>
 324                         <tr>
 325                                 <td class='mw-label'>" .
 326                                 Xml::label( $this->msg( 'movereason' )->text(), 'wpReason' ) .
 327                                 "</td>
 328                                 <td class='mw-input'>" .
 329                                         Xml::input( 'wpReason', 60, $this->reason, array(
 330                                                 'type' => 'text',
 331                                                 'id' => 'wpReason',
 332                                                 'maxlength' => 200,
 333                                         ) ) .
 334                                 "</td>
 335                         </tr>"
 336                 );
 337
 338                 if ( $considerTalk ) {
 339                         $out->addHTML( "
 340                                 <tr>
 341                                         <td></td>
 342                                         <td class='mw-input'>" .
 343                                         Xml::checkLabel(
 344                                                 $this->msg( 'movetalk' )->text(),
 345                                                 'wpMovetalk',
 346                                                 'wpMovetalk',
 347                                                 $this->moveTalk
 348                                         ) .
 349                                         "</td>
 350                                 </tr>"
 351                         );
 352                 }
 353
 354                 if ( $user->isAllowed( 'suppressredirect' ) && $handler->supportsRedirects() ) {
 355                         $out->addHTML( "
 356                                 <tr>
 357                                         <td></td>
 358                                         <td class='mw-input' >" .
 359                                         Xml::checkLabel(
 360                                                 $this->msg( 'move-leave-redirect' )->text(),
 361                                                 'wpLeaveRedirect',
 362                                                 'wpLeaveRedirect',
 363                                                 $this->leaveRedirect
 364                                         ) .
 365                                         "</td>
 366                                 </tr>"
 367                         );
 368                 }
 369
 370                 if ( $hasRedirects ) {
 371                         $out->addHTML( "
 372                                 <tr>
 373                                         <td></td>
 374                                         <td class='mw-input' >" .
 375                                         Xml::checkLabel(
 376                                                 $this->msg( 'fix-double-redirects' )->text(),
 377                                                 'wpFixRedirects',
 378                                                 'wpFixRedirects',
 379                                                 $this->fixRedirects
 380                                         ) .
 381                                         "</td>
 382                                 </tr>"
 383                         );
 384                 }
 385
 386                 if ( $canMoveSubpage ) {
 387                         $out->addHTML( "
 388                                 <tr>
 389                                         <td></td>
 390                                         <td class=\"mw-input\">" .
 391                                         Xml::check(
 392                                                 'wpMovesubpages',
 393                                                 # Don't check the box if we only have talk subpages to
 394                                                 # move and we aren't moving the talk page.
 395                                                 $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 396                                                 array( 'id' => 'wpMovesubpages' )
 397                                         ) . '&#160;' .
 398                                         Xml::tags( 'label', array( 'for' => 'wpMovesubpages' ),
 399                                                 $this->msg(
 400                                                         ( $this->oldTitle->hasSubpages()
 401                                                                 ? 'move-subpages'
 402                                                                 : 'move-talk-subpages' )
 403                                                 )->numParams( $wgMaximumMovedPages )->params( $wgMaximumMovedPages )->parse()
 404                                         ) .
 405                                         "</td>
 406                                 </tr>"
 407                         );
 408                 }
 409
 410                 $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 411                         || $user->isWatched( $this->oldTitle ) );
 412                 # Don't allow watching if user is not logged in
 413                 if ( $user->isLoggedIn() ) {
 414                         $out->addHTML( "
 415                         <tr>
 416                                 <td></td>
 417                                 <td class='mw-input'>" .
 418                                 Xml::checkLabel(
 419                                         $this->msg( 'move-watch' )->text(),
 420                                         'wpWatch',
 421                                         'watch',
 422                                         $watchChecked
 423                                 ) .
 424                                 "</td>
 425                         </tr>" );
 426                 }
 427
 428                 $out->addHTML( "
 429                                 {$confirm}
 430                         <tr>
 431                                 <td>&#160;</td>
 432                                 <td class='mw-submit'>" .
 433                                 Xml::submitButton( $movepagebtn, array( 'name' => $submitVar ) ) .
 434                                 "</td>
 435                         </tr>" .
 436                                 Xml::closeElement( 'table' ) .
 437                                 Html::hidden( 'wpEditToken', $user->getEditToken() ) .
 438                                 Xml::closeElement( 'fieldset' ) .
 439                                 Xml::closeElement( 'form' ) .
 440                                 "\n"
 441                 );
 442
 443                 $this->showLogFragment( $this->oldTitle );
 444                 $this->showSubpages( $this->oldTitle );
 445         }
 446
 447         function doSubmit() {
 448                 global $wgMaximumMovedPages, $wgFixDoubleRedirects;
 449
 450                 $user = $this->getUser();
 451
 452                 if ( $user->pingLimiter( 'move' ) ) {
 453                         throw new ThrottledError;
 454                 }
 455
 456                 $ot = $this->oldTitle;
 457                 $nt = $this->newTitle;
 458
 459                 # don't allow moving to pages with # in
 460                 if ( !$nt || $nt->getFragment() != '' ) {
 461                         $this->showForm( array( array( 'badtitletext' ) ) );
 462
 463                         return;
 464                 }
 465
 466                 # Show a warning if the target file exists on a shared repo
 467                 if ( $nt->getNamespace() == NS_FILE
 468                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 469                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 470                         && wfFindFile( $nt )
 471                 ) {
 472                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 473
 474                         return;
 475                 }
 476
 477                 # Delete to make way if requested
 478                 if ( $this->deleteAndMove ) {
 479                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 480                         if ( count( $permErrors ) ) {
 481                                 # Only show the first error
 482                                 $this->showForm( $permErrors );
 483
 484                                 return;
 485                         }
 486
 487                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 488
 489                         // Delete an associated image if there is
 490                         if ( $nt->getNamespace() == NS_FILE ) {
 491                                 $file = wfLocalFile( $nt );
 492                                 if ( $file->exists() ) {
 493                                         $file->delete( $reason, false );
 494                                 }
 495                         }
 496
 497                         $error = ''; // passed by ref
 498                         $page = WikiPage::factory( $nt );
 499                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 500                         if ( !$deleteStatus->isGood() ) {
 501                                 $this->showForm( $deleteStatus->getErrorsArray() );
 502
 503                                 return;
 504                         }
 505                 }
 506
 507                 $handler = ContentHandler::getForTitle( $ot );
 508
 509                 if ( !$handler->supportsRedirects() ) {
 510                         $createRedirect = false;
 511                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 512                         $createRedirect = $this->leaveRedirect;
 513                 } else {
 514                         $createRedirect = true;
 515                 }
 516
 517                 # Do the actual move.
 518                 $error = $ot->moveTo( $nt, true, $this->reason, $createRedirect );
 519                 if ( $error !== true ) {
 520                         $this->showForm( $error );
 521
 522                         return;
 523                 }
 524
 525                 if ( $wgFixDoubleRedirects && $this->fixRedirects ) {
 526                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 527                 }
 528
 529                 $out = $this->getOutput();
 530                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 531
 532                 $oldLink = Linker::link(
 533                         $ot,
 534                         null,
 535                         array(),
 536                         array( 'redirect' => 'no' )
 537                 );
 538                 $newLink = Linker::linkKnown( $nt );
 539                 $oldText = $ot->getPrefixedText();
 540                 $newText = $nt->getPrefixedText();
 541
 542                 if ( $ot->exists() ) {
 543                         //NOTE: we assume that if the old title exists, it's because it was re-created as
 544                         // a redirect to the new title. This is not safe, but what we did before was
 545                         // even worse: we just determined whether a redirect should have been created,
 546                         // and reported that it was created if it should have, without any checks.
 547                         // Also note that isRedirect() is unreliable because of bug 37209.
 548                         $msgName = 'movepage-moved-redirect';
 549                 } else {
 550                         $msgName = 'movepage-moved-noredirect';
 551                 }
 552
 553                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 554                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 555                 $out->addWikiMsg( $msgName );
 556
 557                 wfRunHooks( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 558
 559                 # Now we move extra pages we've been asked to move: subpages and talk
 560                 # pages.  First, if the old page or the new page is a talk page, we
 561                 # can't move any talk pages: cancel that.
 562                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 563                         $this->moveTalk = false;
 564                 }
 565
 566                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 567                         $this->moveSubpages = false;
 568                 }
 569
 570                 # Next make a list of id's.  This might be marginally less efficient
 571                 # than a more direct method, but this is not a highly performance-cri-
 572                 # tical code path and readable code is more important here.
 573                 #
 574                 # Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 575                 # 4 might get confused.  If so, consider rewriting as a UNION.
 576                 #
 577                 # If the target namespace doesn't allow subpages, moving with subpages
 578                 # would mean that you couldn't move them back in one operation, which
 579                 # is bad.
 580                 # @todo FIXME: A specific error message should be given in this case.
 581
 582                 // @todo FIXME: Use Title::moveSubpages() here
 583                 $dbr = wfGetDB( DB_MASTER );
 584                 if ( $this->moveSubpages && (
 585                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 586                                 $this->moveTalk &&
 587                                         MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 588                         )
 589                 ) ) {
 590                         $conds = array(
 591                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 592                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 593                         );
 594                         $conds['page_namespace'] = array();
 595                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 596                                 $conds['page_namespace'][] = $ot->getNamespace();
 597                         }
 598                         if ( $this->moveTalk &&
 599                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 600                         ) {
 601                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 602                         }
 603                 } elseif ( $this->moveTalk ) {
 604                         $conds = array(
 605                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 606                                 'page_title' => $ot->getDBkey()
 607                         );
 608                 } else {
 609                         # Skip the query
 610                         $conds = null;
 611                 }
 612
 613                 $extraPages = array();
 614                 if ( !is_null( $conds ) ) {
 615                         $extraPages = TitleArray::newFromResult(
 616                                 $dbr->select( 'page',
 617                                         array( 'page_id', 'page_namespace', 'page_title' ),
 618                                         $conds,
 619                                         __METHOD__
 620                                 )
 621                         );
 622                 }
 623
 624                 $extraOutput = array();
 625                 $count = 1;
 626                 foreach ( $extraPages as $oldSubpage ) {
 627                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 628                                 # Already did this one.
 629                                 continue;
 630                         }
 631
 632                         $newPageName = preg_replace(
 633                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 634                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 635                                 $oldSubpage->getDBkey()
 636                         );
 637
 638                         if ( $oldSubpage->isTalkPage() ) {
 639                                 $newNs = $nt->getTalkPage()->getNamespace();
 640                         } else {
 641                                 $newNs = $nt->getSubjectPage()->getNamespace();
 642                         }
 643
 644                         # Bug 14385: we need makeTitleSafe because the new page names may
 645                         # be longer than 255 characters.
 646                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 647                         if ( !$newSubpage ) {
 648                                 $oldLink = Linker::linkKnown( $oldSubpage );
 649                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 650                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 651                                 continue;
 652                         }
 653
 654                         # This was copy-pasted from Renameuser, bleh.
 655                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 656                                 $link = Linker::linkKnown( $newSubpage );
 657                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 658                         } else {
 659                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 660
 661                                 if ( $success === true ) {
 662                                         if ( $this->fixRedirects ) {
 663                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 664                                         }
 665                                         $oldLink = Linker::link(
 666                                                 $oldSubpage,
 667                                                 null,
 668                                                 array(),
 669                                                 array( 'redirect' => 'no' )
 670                                         );
 671
 672                                         $newLink = Linker::linkKnown( $newSubpage );
 673                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )->rawParams( $oldLink, $newLink )->escaped();
 674                                         ++$count;
 675
 676                                         if ( $count >= $wgMaximumMovedPages ) {
 677                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )->numParams( $wgMaximumMovedPages )->escaped();
 678                                                 break;
 679                                         }
 680                                 } else {
 681                                         $oldLink = Linker::linkKnown( $oldSubpage );
 682                                         $newLink = Linker::link( $newSubpage );
 683                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink, $newLink )->escaped();
 684                                 }
 685                         }
 686                 }
 687
 688                 if ( $extraOutput !== array() ) {
 689                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 690                 }
 691
 692                 # Deal with watches (we don't watch subpages)
 693                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 694                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 695         }
 696
 697         function showLogFragment( $title ) {
 698                 $moveLogPage = new LogPage( 'move' );
 699                 $out = $this->getOutput();
 700                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 701                 LogEventsList::showLogExtract( $out, 'move', $title );
 702         }
 703
 704         function showSubpages( $title ) {
 705                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 706                         return;
 707                 }
 708
 709                 $subpages = $title->getSubpages();
 710                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 711
 712                 $out = $this->getOutput();
 713                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 714
 715                 # No subpages.
 716                 if ( $count == 0 ) {
 717                         $out->addWikiMsg( 'movenosubpage' );
 718
 719                         return;
 720                 }
 721
 722                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 723                 $out->addHTML( "<ul>\n" );
 724
 725                 foreach ( $subpages as $subpage ) {
 726                         $link = Linker::link( $subpage );
 727                         $out->addHTML( "<li>$link</li>\n" );
 728                 }
 729                 $out->addHTML( "</ul>\n" );
 730         }
 731
 732         protected function getGroupName() {
 733                 return 'pagetools';
 734         }
 735 }