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
 144                 $newTitle = $this->newTitle;
 145
 146                 if ( !$newTitle ) {
 147                         # Show the current title as a default
 148                         # when the form is first opened.
 149                         $newTitle = $this->oldTitle;
 150                 } elseif ( !count( $err ) ) {
 151                         # If a title was supplied, probably from the move log revert
 152                         # link, check for validity. We can then show some diagnostic
 153                         # information and save a click.
 154                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 155                         if ( is_array( $newerr ) ) {
 156                                 $err = $newerr;
 157                         }
 158                 }
 159
 160                 $user = $this->getUser();
 161
 162                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 163                         && $newTitle->quickUserCan( 'delete', $user )
 164                 ) {
 165                         $out->addWikiMsg( 'delete_and_move_text', $newTitle->getPrefixedText() );
 166                         $movepagebtn = $this->msg( 'delete_and_move' )->text();
 167                         $submitVar = 'wpDeleteAndMove';
 168                         $confirm = "
 169                                 <tr>
 170                                         <td></td>
 171                                         <td class='mw-input'>" .
 172                                 Xml::checkLabel(
 173                                         $this->msg( 'delete_and_move_confirm' )->text(),
 174                                         'wpConfirm',
 175                                         'wpConfirm'
 176                                 ) .
 177                                 "</td>
 178                                 </tr>";
 179                         $err = array();
 180                 } else {
 181                         if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 182                                 $out->wrapWikiMsg(
 183                                         "<div class=\"error mw-moveuserpage-warning\">\n$1\n</div>",
 184                                         'moveuserpage-warning'
 185                                 );
 186                         } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 187                                 $out->wrapWikiMsg(
 188                                         "<div class=\"error mw-movecategorypage-warning\">\n$1\n</div>",
 189                                         'movecategorypage-warning'
 190                                 );
 191                         }
 192
 193                         $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 194                                 'movepagetext' :
 195                                 'movepagetext-noredirectfixer'
 196                         );
 197                         $movepagebtn = $this->msg( 'movepagebtn' )->text();
 198                         $submitVar = 'wpMove';
 199                         $confirm = false;
 200                 }
 201
 202                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'file-exists-sharedrepo'
 203                         && $user->isAllowed( 'reupload-shared' )
 204                 ) {
 205                         $out->addWikiMsg( 'move-over-sharedrepo', $newTitle->getPrefixedText() );
 206                         $submitVar = 'wpMoveOverSharedFile';
 207                         $err = array();
 208                 }
 209
 210                 $oldTalk = $this->oldTitle->getTalkPage();
 211                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 212                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 213
 214                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 215                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 216
 217                 # We also want to be able to move assoc. subpage talk-pages even if base page
 218                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 219                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 220                         ( $oldTalk->exists()
 221                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 222
 223                 $dbr = wfGetDB( DB_SLAVE );
 224                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 225                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 226                                 array(
 227                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 228                                         'rd_title' => $this->oldTitle->getDBkey(),
 229                                 ), __METHOD__ );
 230                 } else {
 231                         $hasRedirects = false;
 232                 }
 233
 234                 if ( $considerTalk ) {
 235                         $out->addWikiMsg( 'movepagetalktext' );
 236                 }
 237
 238                 if ( count( $err ) ) {
 239                         $out->addHTML( "<div class='error'>\n" );
 240                         $action_desc = $this->msg( 'action-move' )->plain();
 241                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 242
 243                         if ( count( $err ) == 1 ) {
 244                                 $errMsg = $err[0];
 245                                 $errMsgName = array_shift( $errMsg );
 246
 247                                 if ( $errMsgName == 'hookaborted' ) {
 248                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 249                                 } else {
 250                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 251                                 }
 252                         } else {
 253                                 $errStr = array();
 254
 255                                 foreach ( $err as $errMsg ) {
 256                                         if ( $errMsg[0] == 'hookaborted' ) {
 257                                                 $errStr[] = $errMsg[1];
 258                                         } else {
 259                                                 $errMsgName = array_shift( $errMsg );
 260                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 261                                         }
 262                                 }
 263
 264                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 265                         }
 266                         $out->addHTML( "</div>\n" );
 267                 }
 268
 269                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 270                         # Is the title semi-protected?
 271                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 272                                 $noticeMsg = 'semiprotectedpagemovewarning';
 273                                 $classes[] = 'mw-textarea-sprotected';
 274                         } else {
 275                                 # Then it must be protected based on static groups (regular)
 276                                 $noticeMsg = 'protectedpagemovewarning';
 277                                 $classes[] = 'mw-textarea-protected';
 278                         }
 279                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 280                         $out->addWikiMsg( $noticeMsg );
 281                         LogEventsList::showLogExtract(
 282                                 $out,
 283                                 'protect',
 284                                 $this->oldTitle,
 285                                 '',
 286                                 array( 'lim' => 1 )
 287                         );
 288                         $out->addHTML( "</div>\n" );
 289                 }
 290
 291                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 292                 // is enforced in the mediawiki.special.movePage module
 293
 294                 $immovableNamespaces = array();
 295
 296                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 297                         if ( !MWNamespace::isMovable( $nsId ) ) {
 298                                 $immovableNamespaces[] = $nsId;
 299                         }
 300                 }
 301
 302                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 303
 304                 $out->addHTML(
 305                         Xml::openElement(
 306                                 'form',
 307                                 array(
 308                                         'method' => 'post',
 309                                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 310                                         'id' => 'movepage'
 311                                 )
 312                         ) .
 313                                 Xml::openElement( 'fieldset' ) .
 314                                 Xml::element( 'legend', null, $this->msg( 'move-page-legend' )->text() ) .
 315                                 Xml::openElement( 'table', array( 'id' => 'mw-movepage-table' ) ) .
 316                                 "<tr>
 317                                 <td class='mw-label'>" .
 318                                 $this->msg( 'movearticle' )->escaped() .
 319                                 "</td>
 320                                 <td class='mw-input'>
 321                                         <strong>{$oldTitleLink}</strong>
 322                                 </td>
 323                         </tr>
 324                         <tr>
 325                                 <td class='mw-label'>" .
 326                                 Xml::label( $this->msg( 'newtitle' )->text(), 'wpNewTitleMain' ) .
 327                                 "</td>
 328                                 <td class='mw-input'>" .
 329                                 Html::namespaceSelector(
 330                                         array(
 331                                                 'selected' => $newTitle->getNamespace(),
 332                                                 'exclude' => $immovableNamespaces
 333                                         ),
 334                                         array( 'name' => 'wpNewTitleNs', 'id' => 'wpNewTitleNs' )
 335                                 ) .
 336                                 Xml::input(
 337                                         'wpNewTitleMain',
 338                                         60,
 339                                         $wgContLang->recodeForEdit( $newTitle->getText() ),
 340                                         array(
 341                                                 'type' => 'text',
 342                                                 'id' => 'wpNewTitleMain',
 343                                                 'maxlength' => 255
 344                                         )
 345                                 ) .
 346                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 347                                 "</td>
 348                         </tr>
 349                         <tr>
 350                                 <td class='mw-label'>" .
 351                                 Xml::label( $this->msg( 'movereason' )->text(), 'wpReason' ) .
 352                                 "</td>
 353                                 <td class='mw-input'>" .
 354                                         Xml::input( 'wpReason', 60, $this->reason, array(
 355                                                 'type' => 'text',
 356                                                 'id' => 'wpReason',
 357                                                 'maxlength' => 200,
 358                                         ) ) .
 359                                 "</td>
 360                         </tr>"
 361                 );
 362
 363                 if ( $considerTalk ) {
 364                         $out->addHTML( "
 365                                 <tr>
 366                                         <td></td>
 367                                         <td class='mw-input'>" .
 368                                         Xml::checkLabel(
 369                                                 $this->msg( 'movetalk' )->text(),
 370                                                 'wpMovetalk',
 371                                                 'wpMovetalk',
 372                                                 $this->moveTalk
 373                                         ) .
 374                                         "</td>
 375                                 </tr>"
 376                         );
 377                 }
 378
 379                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 380                         if ( $handler->supportsRedirects() ) {
 381                                 $isChecked = $this->leaveRedirect;
 382                                 $options = array();
 383                         } else {
 384                                 $isChecked = false;
 385                                 $options = array(
 386                                         'disabled' => 'disabled'
 387                                 );
 388                         }
 389                         $out->addHTML( "
 390                                 <tr>
 391                                         <td></td>
 392                                         <td class='mw-input' >" .
 393                                         Xml::checkLabel(
 394                                                 $this->msg( 'move-leave-redirect' )->text(),
 395                                                 'wpLeaveRedirect',
 396                                                 'wpLeaveRedirect',
 397                                                 $isChecked,
 398                                                 $options
 399                                         ) .
 400                                         "</td>
 401                                 </tr>"
 402                         );
 403                 }
 404
 405                 if ( $hasRedirects ) {
 406                         $out->addHTML( "
 407                                 <tr>
 408                                         <td></td>
 409                                         <td class='mw-input' >" .
 410                                         Xml::checkLabel(
 411                                                 $this->msg( 'fix-double-redirects' )->text(),
 412                                                 'wpFixRedirects',
 413                                                 'wpFixRedirects',
 414                                                 $this->fixRedirects
 415                                         ) .
 416                                         "</td>
 417                                 </tr>"
 418                         );
 419                 }
 420
 421                 if ( $canMoveSubpage ) {
 422                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 423                         $out->addHTML( "
 424                                 <tr>
 425                                         <td></td>
 426                                         <td class=\"mw-input\">" .
 427                                         Xml::check(
 428                                                 'wpMovesubpages',
 429                                                 # Don't check the box if we only have talk subpages to
 430                                                 # move and we aren't moving the talk page.
 431                                                 $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 432                                                 array( 'id' => 'wpMovesubpages' )
 433                                         ) . '&#160;' .
 434                                         Xml::tags( 'label', array( 'for' => 'wpMovesubpages' ),
 435                                                 $this->msg(
 436                                                         ( $this->oldTitle->hasSubpages()
 437                                                                 ? 'move-subpages'
 438                                                                 : 'move-talk-subpages' )
 439                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 440                                         ) .
 441                                         "</td>
 442                                 </tr>"
 443                         );
 444                 }
 445
 446                 $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 447                         || $user->isWatched( $this->oldTitle ) );
 448                 # Don't allow watching if user is not logged in
 449                 if ( $user->isLoggedIn() ) {
 450                         $out->addHTML( "
 451                         <tr>
 452                                 <td></td>
 453                                 <td class='mw-input'>" .
 454                                 Xml::checkLabel(
 455                                         $this->msg( 'move-watch' )->text(),
 456                                         'wpWatch',
 457                                         'watch',
 458                                         $watchChecked
 459                                 ) .
 460                                 "</td>
 461                         </tr>" );
 462                 }
 463
 464                 $out->addHTML( "
 465                                 {$confirm}
 466                         <tr>
 467                                 <td>&#160;</td>
 468                                 <td class='mw-submit'>" .
 469                                 Xml::submitButton( $movepagebtn, array( 'name' => $submitVar ) ) .
 470                                 "</td>
 471                         </tr>" .
 472                                 Xml::closeElement( 'table' ) .
 473                                 Html::hidden( 'wpEditToken', $user->getEditToken() ) .
 474                                 Xml::closeElement( 'fieldset' ) .
 475                                 Xml::closeElement( 'form' ) .
 476                                 "\n"
 477                 );
 478
 479                 $this->showLogFragment( $this->oldTitle );
 480                 $this->showSubpages( $this->oldTitle );
 481         }
 482
 483         function doSubmit() {
 484                 $user = $this->getUser();
 485
 486                 if ( $user->pingLimiter( 'move' ) ) {
 487                         throw new ThrottledError;
 488                 }
 489
 490                 $ot = $this->oldTitle;
 491                 $nt = $this->newTitle;
 492
 493                 # don't allow moving to pages with # in
 494                 if ( !$nt || $nt->hasFragment() ) {
 495                         $this->showForm( array( array( 'badtitletext' ) ) );
 496
 497                         return;
 498                 }
 499
 500                 # Show a warning if the target file exists on a shared repo
 501                 if ( $nt->getNamespace() == NS_FILE
 502                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 503                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 504                         && wfFindFile( $nt )
 505                 ) {
 506                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 507
 508                         return;
 509                 }
 510
 511                 # Delete to make way if requested
 512                 if ( $this->deleteAndMove ) {
 513                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 514                         if ( count( $permErrors ) ) {
 515                                 # Only show the first error
 516                                 $this->showForm( $permErrors );
 517
 518                                 return;
 519                         }
 520
 521                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 522
 523                         // Delete an associated image if there is
 524                         if ( $nt->getNamespace() == NS_FILE ) {
 525                                 $file = wfLocalFile( $nt );
 526                                 if ( $file->exists() ) {
 527                                         $file->delete( $reason, false );
 528                                 }
 529                         }
 530
 531                         $error = ''; // passed by ref
 532                         $page = WikiPage::factory( $nt );
 533                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 534                         if ( !$deleteStatus->isGood() ) {
 535                                 $this->showForm( $deleteStatus->getErrorsArray() );
 536
 537                                 return;
 538                         }
 539                 }
 540
 541                 $handler = ContentHandler::getForTitle( $ot );
 542
 543                 if ( !$handler->supportsRedirects() ) {
 544                         $createRedirect = false;
 545                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 546                         $createRedirect = $this->leaveRedirect;
 547                 } else {
 548                         $createRedirect = true;
 549                 }
 550
 551                 # Do the actual move.
 552                 $error = $ot->moveTo( $nt, true, $this->reason, $createRedirect );
 553                 if ( $error !== true ) {
 554                         $this->showForm( $error );
 555
 556                         return;
 557                 }
 558
 559                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 560                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 561                 }
 562
 563                 $out = $this->getOutput();
 564                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 565
 566                 $oldLink = Linker::link(
 567                         $ot,
 568                         null,
 569                         array( 'id' => 'movepage-oldlink' ),
 570                         array( 'redirect' => 'no' )
 571                 );
 572                 $newLink = Linker::linkKnown(
 573                         $nt,
 574                         null,
 575                         array( 'id' => 'movepage-newlink' )
 576                 );
 577                 $oldText = $ot->getPrefixedText();
 578                 $newText = $nt->getPrefixedText();
 579
 580                 if ( $ot->exists() ) {
 581                         //NOTE: we assume that if the old title exists, it's because it was re-created as
 582                         // a redirect to the new title. This is not safe, but what we did before was
 583                         // even worse: we just determined whether a redirect should have been created,
 584                         // and reported that it was created if it should have, without any checks.
 585                         // Also note that isRedirect() is unreliable because of bug 37209.
 586                         $msgName = 'movepage-moved-redirect';
 587                 } else {
 588                         $msgName = 'movepage-moved-noredirect';
 589                 }
 590
 591                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 592                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 593                 $out->addWikiMsg( $msgName );
 594
 595                 wfRunHooks( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 596
 597                 # Now we move extra pages we've been asked to move: subpages and talk
 598                 # pages.  First, if the old page or the new page is a talk page, we
 599                 # can't move any talk pages: cancel that.
 600                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 601                         $this->moveTalk = false;
 602                 }
 603
 604                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 605                         $this->moveSubpages = false;
 606                 }
 607
 608                 # Next make a list of id's.  This might be marginally less efficient
 609                 # than a more direct method, but this is not a highly performance-cri-
 610                 # tical code path and readable code is more important here.
 611                 #
 612                 # Note: this query works nicely on MySQL 5, but the optimizer in MySQL
 613                 # 4 might get confused.  If so, consider rewriting as a UNION.
 614                 #
 615                 # If the target namespace doesn't allow subpages, moving with subpages
 616                 # would mean that you couldn't move them back in one operation, which
 617                 # is bad.
 618                 # @todo FIXME: A specific error message should be given in this case.
 619
 620                 // @todo FIXME: Use Title::moveSubpages() here
 621                 $dbr = wfGetDB( DB_MASTER );
 622                 if ( $this->moveSubpages && (
 623                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 624                                 $this->moveTalk
 625                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 626                         )
 627                 ) ) {
 628                         $conds = array(
 629                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 630                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 631                         );
 632                         $conds['page_namespace'] = array();
 633                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 634                                 $conds['page_namespace'][] = $ot->getNamespace();
 635                         }
 636                         if ( $this->moveTalk &&
 637                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 638                         ) {
 639                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 640                         }
 641                 } elseif ( $this->moveTalk ) {
 642                         $conds = array(
 643                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 644                                 'page_title' => $ot->getDBkey()
 645                         );
 646                 } else {
 647                         # Skip the query
 648                         $conds = null;
 649                 }
 650
 651                 $extraPages = array();
 652                 if ( !is_null( $conds ) ) {
 653                         $extraPages = TitleArray::newFromResult(
 654                                 $dbr->select( 'page',
 655                                         array( 'page_id', 'page_namespace', 'page_title' ),
 656                                         $conds,
 657                                         __METHOD__
 658                                 )
 659                         );
 660                 }
 661
 662                 $extraOutput = array();
 663                 $count = 1;
 664                 foreach ( $extraPages as $oldSubpage ) {
 665                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 666                                 # Already did this one.
 667                                 continue;
 668                         }
 669
 670                         $newPageName = preg_replace(
 671                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 672                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 673                                 $oldSubpage->getDBkey()
 674                         );
 675
 676                         if ( $oldSubpage->isTalkPage() ) {
 677                                 $newNs = $nt->getTalkPage()->getNamespace();
 678                         } else {
 679                                 $newNs = $nt->getSubjectPage()->getNamespace();
 680                         }
 681
 682                         # Bug 14385: we need makeTitleSafe because the new page names may
 683                         # be longer than 255 characters.
 684                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 685                         if ( !$newSubpage ) {
 686                                 $oldLink = Linker::linkKnown( $oldSubpage );
 687                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 688                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 689                                 continue;
 690                         }
 691
 692                         # This was copy-pasted from Renameuser, bleh.
 693                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 694                                 $link = Linker::linkKnown( $newSubpage );
 695                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 696                         } else {
 697                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 698
 699                                 if ( $success === true ) {
 700                                         if ( $this->fixRedirects ) {
 701                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 702                                         }
 703                                         $oldLink = Linker::link(
 704                                                 $oldSubpage,
 705                                                 null,
 706                                                 array(),
 707                                                 array( 'redirect' => 'no' )
 708                                         );
 709
 710                                         $newLink = Linker::linkKnown( $newSubpage );
 711                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 712                                                 ->rawParams( $oldLink, $newLink )->escaped();
 713                                         ++$count;
 714
 715                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 716                                         if ( $count >= $maximumMovedPages ) {
 717                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 718                                                         ->numParams( $maximumMovedPages )->escaped();
 719                                                 break;
 720                                         }
 721                                 } else {
 722                                         $oldLink = Linker::linkKnown( $oldSubpage );
 723                                         $newLink = Linker::link( $newSubpage );
 724                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 725                                                 ->rawParams( $oldLink, $newLink )->escaped();
 726                                 }
 727                         }
 728                 }
 729
 730                 if ( $extraOutput !== array() ) {
 731                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 732                 }
 733
 734                 # Deal with watches (we don't watch subpages)
 735                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 736                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 737         }
 738
 739         function showLogFragment( $title ) {
 740                 $moveLogPage = new LogPage( 'move' );
 741                 $out = $this->getOutput();
 742                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 743                 LogEventsList::showLogExtract( $out, 'move', $title );
 744         }
 745
 746         function showSubpages( $title ) {
 747                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 748                         return;
 749                 }
 750
 751                 $subpages = $title->getSubpages();
 752                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 753
 754                 $out = $this->getOutput();
 755                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 756
 757                 # No subpages.
 758                 if ( $count == 0 ) {
 759                         $out->addWikiMsg( 'movenosubpage' );
 760
 761                         return;
 762                 }
 763
 764                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 765                 $out->addHTML( "<ul>\n" );
 766
 767                 foreach ( $subpages as $subpage ) {
 768                         $link = Linker::link( $subpage );
 769                         $out->addHTML( "<li>$link</li>\n" );
 770                 }
 771                 $out->addHTML( "</ul>\n" );
 772         }
 773
 774         protected function getGroupName() {
 775                 return 'pagetools';
 776         }
 777 }