includes/specials/SpecialMovepage.php

   1 <?php
   2 /**
   3  * Implements Special:Movepage
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * A special page that allows users to change page titles
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class MovePageForm extends UnlistedSpecialPage {
  30         /** @var Title */
  31         protected $oldTitle;
  32
  33         /** @var Title */
  34         protected $newTitle;
  35
  36
  37         /** @var string Text input */
  38         protected $reason;
  39
  40         // Checks
  41
  42         /** @var bool */
  43         protected $moveTalk;
  44
  45         /** @var bool */
  46         protected $deleteAndMove;
  47
  48         /** @var bool */
  49         protected $moveSubpages;
  50
  51         /** @var bool */
  52         protected $fixRedirects;
  53
  54         /** @var bool */
  55         protected $leaveRedirect;
  56
  57         /** @var bool */
  58         protected $moveOverShared;
  59
  60         private $watch = false;
  61
  62         public function __construct() {
  63                 parent::__construct( 'Movepage' );
  64         }
  65
  66         public function execute( $par ) {
  67                 $this->checkReadOnly();
  68
  69                 $this->setHeaders();
  70                 $this->outputHeader();
  71
  72                 $request = $this->getRequest();
  73                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  74
  75                 // Yes, the use of getVal() and getText() is wanted, see bug 20365
  76
  77                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  78                 $this->oldTitle = Title::newFromText( $oldTitleText );
  79
  80                 if ( is_null( $this->oldTitle ) ) {
  81                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  82                 }
  83                 if ( !$this->oldTitle->exists() ) {
  84                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  85                 }
  86
  87                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  88                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  89                 // Backwards compatibility for forms submitting here from other sources
  90                 // which is more common than it should be..
  91                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  92                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  93                         ? Title::newFromText( $newTitleText_bc )
  94                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
  95
  96                 $user = $this->getUser();
  97
  98                 # Check rights
  99                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 100                 if ( count( $permErrors ) ) {
 101                         // Auto-block user's IP if the account was "hard" blocked
 102                         $user->spreadAnyEditBlock();
 103                         throw new PermissionsError( 'move', $permErrors );
 104                 }
 105
 106                 $def = !$request->wasPosted();
 107
 108                 $this->reason = $request->getText( 'wpReason' );
 109                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 110                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 111                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 112                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
 113                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
 114                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
 115                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 116
 117                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
 118                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 119                 ) {
 120                         $this->doSubmit();
 121                 } else {
 122                         $this->showForm( array() );
 123                 }
 124         }
 125
 126         /**
 127          * Show the form
 128          *
 129          * @param array $err Error messages. Each item is an error message.
 130          *    It may either be a string message name or array message name and
 131          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 132          */
 133         function showForm( $err ) {
 134                 global $wgContLang;
 135
 136                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 137
 138                 $oldTitleLink = Linker::link( $this->oldTitle );
 139
 140                 $out = $this->getOutput();
 141                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 142                 $out->addModules( 'mediawiki.special.movePage' );
 143                 $out->addHelpLink( 'Help:Moving a page' );
 144
 145                 $newTitle = $this->newTitle;
 146
 147                 if ( !$newTitle ) {
 148                         # Show the current title as a default
 149                         # when the form is first opened.
 150                         $newTitle = $this->oldTitle;
 151                 } elseif ( !count( $err ) ) {
 152                         # If a title was supplied, probably from the move log revert
 153                         # link, check for validity. We can then show some diagnostic
 154                         # information and save a click.
 155                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 156                         if ( is_array( $newerr ) ) {
 157                                 $err = $newerr;
 158                         }
 159                 }
 160
 161                 $user = $this->getUser();
 162
 163                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 164                         && $newTitle->quickUserCan( 'delete', $user )
 165                 ) {
 166                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 167                         $movepagebtn = $this->msg( 'delete_and_move' )->text();
 168                         $submitVar = 'wpDeleteAndMove';
 169                         $confirm = true;
 170                         $err = array();
 171                 } else {
 172                         if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 173                                 $out->wrapWikiMsg(
 174                                         "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 175                                         'moveuserpage-warning'
 176                                 );
 177                         } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 178                                 $out->wrapWikiMsg(
 179                                         "<div class=\"error mw-movecategorypage-warning\">\n$1\n</div>",
 180                                         'movecategorypage-warning'
 181                                 );
 182                         }
 183
 184                         $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 185                                 'movepagetext' :
 186                                 'movepagetext-noredirectfixer'
 187                         );
 188                         $movepagebtn = $this->msg( 'movepagebtn' )->text();
 189                         $submitVar = 'wpMove';
 190                         $confirm = false;
 191                 }
 192
 193                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 194                         && $user->isAllowed( 'reupload-shared' )
 195                 ) {
 196                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 197                         $submitVar = 'wpMoveOverSharedFile';
 198                         $err = array();
 199                 }
 200
 201                 $oldTalk = $this->oldTitle->getTalkPage();
 202                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 203                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 204
 205                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 206                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 207
 208                 # We also want to be able to move assoc. subpage talk-pages even if base page
 209                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 210                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 211                         ( $oldTalk->exists()
 212                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 213
 214                 $dbr = wfGetDB( DB_SLAVE );
 215                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 216                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 217                                 array(
 218                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 219                                         'rd_title' => $this->oldTitle->getDBkey(),
 220                                 ), __METHOD__ );
 221                 } else {
 222                         $hasRedirects = false;
 223                 }
 224
 225                 if ( $considerTalk ) {
 226                         $out->addWikiMsg( 'movepagetalktext' );
 227                 }
 228
 229                 if ( count( $err ) ) {
 230                         $out->addHTML( "<div class='error'>\n" );
 231                         $action_desc = $this->msg( 'action-move' )->plain();
 232                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 233
 234                         if ( count( $err ) == 1 ) {
 235                                 $errMsg = $err[0];
 236                                 $errMsgName = array_shift( $errMsg );
 237
 238                                 if ( $errMsgName == 'hookaborted' ) {
 239                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 240                                 } else {
 241                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 242                                 }
 243                         } else {
 244                                 $errStr = array();
 245
 246                                 foreach ( $err as $errMsg ) {
 247                                         if ( $errMsg[0] == 'hookaborted' ) {
 248                                                 $errStr[] = $errMsg[1];
 249                                         } else {
 250                                                 $errMsgName = array_shift( $errMsg );
 251                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 252                                         }
 253                                 }
 254
 255                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 256                         }
 257                         $out->addHTML( "</div>\n" );
 258                 }
 259
 260                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 261                         # Is the title semi-protected?
 262                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 263                                 $noticeMsg = 'semiprotectedpagemovewarning';
 264                                 $classes[] = 'mw-textarea-sprotected';
 265                         } else {
 266                                 # Then it must be protected based on static groups (regular)
 267                                 $noticeMsg = 'protectedpagemovewarning';
 268                                 $classes[] = 'mw-textarea-protected';
 269                         }
 270                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 271                         $out->addWikiMsg( $noticeMsg );
 272                         LogEventsList::showLogExtract(
 273                                 $out,
 274                                 'protect',
 275                                 $this->oldTitle,
 276                                 '',
 277                                 array( 'lim' => 1 )
 278                         );
 279                         $out->addHTML( "</div>\n" );
 280                 }
 281
 282                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 283                 // is enforced in the mediawiki.special.movePage module
 284
 285                 $immovableNamespaces = array();
 286
 287                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 288                         if ( !MWNamespace::isMovable( $nsId ) ) {
 289                                 $immovableNamespaces[] = $nsId;
 290                         }
 291                 }
 292
 293                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 294
 295                 $out->addHTML(
 296                         Xml::openElement(
 297                                 'form',
 298                                 array(
 299                                         'method' => 'post',
 300                                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 301                                         'id' => 'movepage'
 302                                 )
 303                         ) .
 304                         Xml::openElement( 'fieldset' ) .
 305                         Xml::element( 'legend', null, $this->msg( 'move-page-legend' )->text() ) .
 306                         Xml::openElement( 'table', array( 'id' => 'mw-movepage-table' ) )
 307                 );
 308
 309                 $out->addHTML(
 310                         "<tr>
 311                                 <td class='mw-label'>" .
 312                                         $this->msg( 'movearticle' )->escaped() .
 313                                 "</td>
 314                                 <td class='mw-input'>
 315                                         <strong>{$oldTitleLink}</strong>
 316                                 </td>
 317                         </tr>
 318                         <tr>
 319                                 <td class='mw-label'>" .
 320                                         Xml::label( $this->msg( 'newtitle' )->text(), 'wpNewTitleMain' ) .
 321                                 "</td>
 322                                 <td class='mw-input'>" .
 323                                         Html::namespaceSelector(
 324                                                 array(
 325                                                         'selected' => $newTitle->getNamespace(),
 326                                                         'exclude' => $immovableNamespaces
 327                                                 ),
 328                                                 array( 'name' => 'wpNewTitleNs', 'id' => 'wpNewTitleNs' )
 329                                         ) .
 330                                         Xml::input(
 331                                                 'wpNewTitleMain',
 332                                                 60,
 333                                                 $wgContLang->recodeForEdit( $newTitle->getText() ),
 334                                                 array(
 335                                                         'type' => 'text',
 336                                                         'id' => 'wpNewTitleMain',
 337                                                         'maxlength' => 255
 338                                                 )
 339                                         ) .
 340                                         Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 341                                 "</td>
 342                         </tr>
 343                         <tr>
 344                                 <td class='mw-label'>" .
 345                                         Xml::label( $this->msg( 'movereason' )->text(), 'wpReason' ) .
 346                                 "</td>
 347                                 <td class='mw-input'>" .
 348                                         Xml::input( 'wpReason', 60, $this->reason, array(
 349                                                 'type' => 'text',
 350                                                 'id' => 'wpReason',
 351                                                 'maxlength' => 200,
 352                                         ) ) .
 353                                 "</td>
 354                         </tr>"
 355                 );
 356
 357                 if ( $considerTalk ) {
 358                         $out->addHTML( "
 359                                 <tr>
 360                                         <td></td>
 361                                         <td class='mw-input'>" .
 362                                                 Xml::checkLabel(
 363                                                         $this->msg( 'movetalk' )->text(),
 364                                                         'wpMovetalk',
 365                                                         'wpMovetalk',
 366                                                         $this->moveTalk
 367                                                 ) .
 368                                         "</td>
 369                                 </tr>"
 370                         );
 371                 }
 372
 373                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 374                         if ( $handler->supportsRedirects() ) {
 375                                 $isChecked = $this->leaveRedirect;
 376                                 $options = array();
 377                         } else {
 378                                 $isChecked = false;
 379                                 $options = array(
 380                                         'disabled' => 'disabled'
 381                                 );
 382                         }
 383                         $out->addHTML( "
 384                                 <tr>
 385                                         <td></td>
 386                                         <td class='mw-input'>" .
 387                                                 Xml::checkLabel(
 388                                                         $this->msg( 'move-leave-redirect' )->text(),
 389                                                         'wpLeaveRedirect',
 390                                                         'wpLeaveRedirect',
 391                                                         $isChecked,
 392                                                         $options
 393                                                 ) .
 394                                         "</td>
 395                                 </tr>"
 396                         );
 397                 }
 398
 399                 if ( $hasRedirects ) {
 400                         $out->addHTML( "
 401                                 <tr>
 402                                         <td></td>
 403                                         <td class='mw-input'>" .
 404                                                 Xml::checkLabel(
 405                                                         $this->msg( 'fix-double-redirects' )->text(),
 406                                                         'wpFixRedirects',
 407                                                         'wpFixRedirects',
 408                                                         $this->fixRedirects
 409                                                 ) .
 410                                         "</td>
 411                                 </tr>"
 412                         );
 413                 }
 414
 415                 if ( $canMoveSubpage ) {
 416                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 417                         $out->addHTML( "
 418                                 <tr>
 419                                         <td></td>
 420                                         <td class='mw-input'>" .
 421                                                 Xml::check(
 422                                                         'wpMovesubpages',
 423                                                         # Don't check the box if we only have talk subpages to
 424                                                         # move and we aren't moving the talk page.
 425                                                         $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 426                                                         array( 'id' => 'wpMovesubpages' )
 427                                                 ) . '&#160;' .
 428                                                 Xml::tags(
 429                                                         'label',
 430                                                         array( 'for' => 'wpMovesubpages' ),
 431                                                         $this->msg(
 432                                                                 ( $this->oldTitle->hasSubpages()
 433                                                                         ? 'move-subpages'
 434                                                                         : 'move-talk-subpages' )
 435                                                         )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 436                                                 ) .
 437                                         "</td>
 438                                 </tr>"
 439                         );
 440                 }
 441
 442                 $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 443                         || $user->isWatched( $this->oldTitle ) );
 444                 # Don't allow watching if user is not logged in
 445                 if ( $user->isLoggedIn() ) {
 446                         $out->addHTML( "
 447                                 <tr>
 448                                         <td></td>
 449                                         <td class='mw-input'>" .
 450                                                 Xml::checkLabel(
 451                                                         $this->msg( 'move-watch' )->text(),
 452                                                         'wpWatch',
 453                                                         'watch',
 454                                                         $watchChecked
 455                                                 ) .
 456                                         "</td>
 457                                 </tr>"
 458                         );
 459                 }
 460
 461                 if ( $confirm ) {
 462                         $out->addHTML( "
 463                                 <tr>
 464                                         <td></td>
 465                                         <td class='mw-input'>" .
 466                                                 Xml::checkLabel(
 467                                                         $this->msg( 'delete_and_move_confirm' )->text(),
 468                                                         'wpConfirm',
 469                                                         'wpConfirm'
 470                                                 ) .
 471                                         "</td>
 472                                 </tr>"
 473                         );
 474                 }
 475
 476                 $out->addHTML( "
 477                         <tr>
 478                                 <td></td>
 479                                 <td class='mw-submit'>" .
 480                                         Xml::submitButton( $movepagebtn, array( 'name' => $submitVar ) ) .
 481                                 "</td>
 482                         </tr>"
 483                 );
 484
 485                 $out->addHTML(
 486                         Xml::closeElement( 'table' ) .
 487                         Html::hidden( 'wpEditToken', $user->getEditToken() ) .
 488                         Xml::closeElement( 'fieldset' ) .
 489                         Xml::closeElement( 'form' ) .
 490                         "\n"
 491                 );
 492
 493                 $this->showLogFragment( $this->oldTitle );
 494                 $this->showSubpages( $this->oldTitle );
 495         }
 496
 497         function doSubmit() {
 498                 $user = $this->getUser();
 499
 500                 if ( $user->pingLimiter( 'move' ) ) {
 501                         throw new ThrottledError;
 502                 }
 503
 504                 $ot = $this->oldTitle;
 505                 $nt = $this->newTitle;
 506
 507                 # don't allow moving to pages with # in
 508                 if ( !$nt || $nt->hasFragment() ) {
 509                         $this->showForm( array( array( 'badtitletext' ) ) );
 510
 511                         return;
 512                 }
 513
 514                 # Show a warning if the target file exists on a shared repo
 515                 if ( $nt->getNamespace() == NS_FILE
 516                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 517                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 518                         && wfFindFile( $nt )
 519                 ) {
 520                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 521
 522                         return;
 523                 }
 524
 525                 # Delete to make way if requested
 526                 if ( $this->deleteAndMove ) {
 527                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 528                         if ( count( $permErrors ) ) {
 529                                 # Only show the first error
 530                                 $this->showForm( $permErrors );
 531
 532                                 return;
 533                         }
 534
 535                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 536
 537                         // Delete an associated image if there is
 538                         if ( $nt->getNamespace() == NS_FILE ) {
 539                                 $file = wfLocalFile( $nt );
 540                                 if ( $file->exists() ) {
 541                                         $file->delete( $reason, false, $user );
 542                                 }
 543                         }
 544
 545                         $error = ''; // passed by ref
 546                         $page = WikiPage::factory( $nt );
 547                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 548                         if ( !$deleteStatus->isGood() ) {
 549                                 $this->showForm( $deleteStatus->getErrorsArray() );
 550
 551                                 return;
 552                         }
 553                 }
 554
 555                 $handler = ContentHandler::getForTitle( $ot );
 556
 557                 if ( !$handler->supportsRedirects() ) {
 558                         $createRedirect = false;
 559                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 560                         $createRedirect = $this->leaveRedirect;
 561                 } else {
 562                         $createRedirect = true;
 563                 }
 564
 565                 # Do the actual move.
 566                 $mp = new MovePage( $ot, $nt );
 567                 $valid = $mp->isValidMove();
 568                 if ( !$valid->isOK() ) {
 569                         $this->showForm( $valid->getErrorsArray() );
 570                         return;
 571                 }
 572
 573                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 574                 if ( !$permStatus->isOK() ) {
 575                         $this->showForm( $permStatus->getErrorsArray() );
 576                         return;
 577                 }
 578
 579                 $status = $mp->move( $user, $this->reason, $createRedirect );
 580                 if ( !$status->isOK() ) {
 581                         $this->showForm( $status->getErrorsArray() );
 582                         return;
 583                 }
 584
 585                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 586                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 587                 }
 588
 589                 $out = $this->getOutput();
 590                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 591
 592                 $oldLink = Linker::link(
 593                         $ot,
 594                         null,
 595                         array( 'id' => 'movepage-oldlink' ),
 596                         array( 'redirect' => 'no' )
 597                 );
 598                 $newLink = Linker::linkKnown(
 599                         $nt,
 600                         null,
 601                         array( 'id' => 'movepage-newlink' )
 602                 );
 603                 $oldText = $ot->getPrefixedText();
 604                 $newText = $nt->getPrefixedText();
 605
 606                 if ( $ot->exists() ) {
 607                         //NOTE: we assume that if the old title exists, it's because it was re-created as
 608                         // a redirect to the new title. This is not safe, but what we did before was
 609                         // even worse: we just determined whether a redirect should have been created,
 610                         // and reported that it was created if it should have, without any checks.
 611                         // Also note that isRedirect() is unreliable because of bug 37209.
 612                         $msgName = 'movepage-moved-redirect';
 613                 } else {
 614                         $msgName = 'movepage-moved-noredirect';
 615                 }
 616
 617                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 618                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 619                 $out->addWikiMsg( $msgName );
 620
 621                 Hooks::run( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 622
 623                 # Now we move extra pages we've been asked to move: subpages and talk
 624                 # pages.  First, if the old page or the new page is a talk page, we
 625                 # can't move any talk pages: cancel that.
 626                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 627                         $this->moveTalk = false;
 628                 }
 629
 630                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 631                         $this->moveSubpages = false;
 632                 }
 633
 634                 # Next make a list of id's.  This might be marginally less efficient
 635                 # than a more direct method, but this is not a highly performance-cri-
 636                 # tical code path and readable code is more important here.
 637                 #
 638                 # Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 639                 # 4 might get confused.  If so, consider rewriting as a UNION.
 640                 #
 641                 # If the target namespace doesn't allow subpages, moving with subpages
 642                 # would mean that you couldn't move them back in one operation, which
 643                 # is bad.
 644                 # @todo FIXME: A specific error message should be given in this case.
 645
 646                 // @todo FIXME: Use Title::moveSubpages() here
 647                 $dbr = wfGetDB( DB_MASTER );
 648                 if ( $this->moveSubpages && (
 649                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 650                                 $this->moveTalk
 651                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 652                         )
 653                 ) ) {
 654                         $conds = array(
 655                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 656                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 657                         );
 658                         $conds['page_namespace'] = array();
 659                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 660                                 $conds['page_namespace'][] = $ot->getNamespace();
 661                         }
 662                         if ( $this->moveTalk &&
 663                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 664                         ) {
 665                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 666                         }
 667                 } elseif ( $this->moveTalk ) {
 668                         $conds = array(
 669                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 670                                 'page_title' => $ot->getDBkey()
 671                         );
 672                 } else {
 673                         # Skip the query
 674                         $conds = null;
 675                 }
 676
 677                 $extraPages = array();
 678                 if ( !is_null( $conds ) ) {
 679                         $extraPages = TitleArray::newFromResult(
 680                                 $dbr->select( 'page',
 681                                         array( 'page_id', 'page_namespace', 'page_title' ),
 682                                         $conds,
 683                                         __METHOD__
 684                                 )
 685                         );
 686                 }
 687
 688                 $extraOutput = array();
 689                 $count = 1;
 690                 foreach ( $extraPages as $oldSubpage ) {
 691                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 692                                 # Already did this one.
 693                                 continue;
 694                         }
 695
 696                         $newPageName = preg_replace(
 697                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 698                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 699                                 $oldSubpage->getDBkey()
 700                         );
 701
 702                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 703                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 704                                 $newNs = $nt->getNamespace();
 705                         } elseif ( $oldSubpage->isTalkPage() ) {
 706                                 $newNs = $nt->getTalkPage()->getNamespace();
 707                         } else {
 708                                 $newNs = $nt->getSubjectPage()->getNamespace();
 709                         }
 710
 711                         # Bug 14385: we need makeTitleSafe because the new page names may
 712                         # be longer than 255 characters.
 713                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 714                         if ( !$newSubpage ) {
 715                                 $oldLink = Linker::linkKnown( $oldSubpage );
 716                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 717                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 718                                 continue;
 719                         }
 720
 721                         # This was copy-pasted from Renameuser, bleh.
 722                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 723                                 $link = Linker::linkKnown( $newSubpage );
 724                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 725                         } else {
 726                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 727
 728                                 if ( $success === true ) {
 729                                         if ( $this->fixRedirects ) {
 730                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 731                                         }
 732                                         $oldLink = Linker::link(
 733                                                 $oldSubpage,
 734                                                 null,
 735                                                 array(),
 736                                                 array( 'redirect' => 'no' )
 737                                         );
 738
 739                                         $newLink = Linker::linkKnown( $newSubpage );
 740                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 741                                                 ->rawParams( $oldLink, $newLink )->escaped();
 742                                         ++$count;
 743
 744                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 745                                         if ( $count >= $maximumMovedPages ) {
 746                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 747                                                         ->numParams( $maximumMovedPages )->escaped();
 748                                                 break;
 749                                         }
 750                                 } else {
 751                                         $oldLink = Linker::linkKnown( $oldSubpage );
 752                                         $newLink = Linker::link( $newSubpage );
 753                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 754                                                 ->rawParams( $oldLink, $newLink )->escaped();
 755                                 }
 756                         }
 757                 }
 758
 759                 if ( $extraOutput !== array() ) {
 760                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 761                 }
 762
 763                 # Deal with watches (we don't watch subpages)
 764                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 765                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 766         }
 767
 768         function showLogFragment( $title ) {
 769                 $moveLogPage = new LogPage( 'move' );
 770                 $out = $this->getOutput();
 771                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 772                 LogEventsList::showLogExtract( $out, 'move', $title );
 773         }
 774
 775         function showSubpages( $title ) {
 776                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 777                         return;
 778                 }
 779
 780                 $subpages = $title->getSubpages();
 781                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 782
 783                 $out = $this->getOutput();
 784                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 785
 786                 # No subpages.
 787                 if ( $count == 0 ) {
 788                         $out->addWikiMsg( 'movenosubpage' );
 789
 790                         return;
 791                 }
 792
 793                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 794                 $out->addHTML( "<ul>\n" );
 795
 796                 foreach ( $subpages as $subpage ) {
 797                         $link = Linker::link( $subpage );
 798                         $out->addHTML( "<li>$link</li>\n" );
 799                 }
 800                 $out->addHTML( "</ul>\n" );
 801         }
 802
 803         protected function getGroupName() {
 804                 return 'pagetools';
 805         }
 806 }