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 = null;
  32
  33         /** @var Title */
  34         protected $newTitle;
  35
  36         /** @var string Text input */
  37         protected $reason;
  38
  39         // Checks
  40
  41         /** @var bool */
  42         protected $moveTalk;
  43
  44         /** @var bool */
  45         protected $deleteAndMove;
  46
  47         /** @var bool */
  48         protected $moveSubpages;
  49
  50         /** @var bool */
  51         protected $fixRedirects;
  52
  53         /** @var bool */
  54         protected $leaveRedirect;
  55
  56         /** @var bool */
  57         protected $moveOverShared;
  58
  59         private $watch = false;
  60
  61         public function __construct() {
  62                 parent::__construct( 'Movepage' );
  63         }
  64
  65         public function doesWrites() {
  66                 return true;
  67         }
  68
  69         public function execute( $par ) {
  70                 $this->useTransactionalTimeLimit();
  71
  72                 $this->checkReadOnly();
  73
  74                 $this->setHeaders();
  75                 $this->outputHeader();
  76
  77                 $request = $this->getRequest();
  78                 $target = !is_null( $par ) ? $par : $request->getVal( 'target' );
  79
  80                 // Yes, the use of getVal() and getText() is wanted, see bug 20365
  81
  82                 $oldTitleText = $request->getVal( 'wpOldTitle', $target );
  83                 $this->oldTitle = Title::newFromText( $oldTitleText );
  84
  85                 if ( !$this->oldTitle ) {
  86                         // Either oldTitle wasn't passed, or newFromText returned null
  87                         throw new ErrorPageError( 'notargettitle', 'notargettext' );
  88                 }
  89                 if ( !$this->oldTitle->exists() ) {
  90                         throw new ErrorPageError( 'nopagetitle', 'nopagetext' );
  91                 }
  92
  93                 $newTitleTextMain = $request->getText( 'wpNewTitleMain' );
  94                 $newTitleTextNs = $request->getInt( 'wpNewTitleNs', $this->oldTitle->getNamespace() );
  95                 // Backwards compatibility for forms submitting here from other sources
  96                 // which is more common than it should be..
  97                 $newTitleText_bc = $request->getText( 'wpNewTitle' );
  98                 $this->newTitle = strlen( $newTitleText_bc ) > 0
  99                         ? Title::newFromText( $newTitleText_bc )
 100                         : Title::makeTitleSafe( $newTitleTextNs, $newTitleTextMain );
 101
 102                 $user = $this->getUser();
 103
 104                 # Check rights
 105                 $permErrors = $this->oldTitle->getUserPermissionsErrors( 'move', $user );
 106                 if ( count( $permErrors ) ) {
 107                         // Auto-block user's IP if the account was "hard" blocked
 108                         DeferredUpdates::addCallableUpdate( function() use ( $user ) {
 109                                 $user->spreadAnyEditBlock();
 110                         } );
 111                         throw new PermissionsError( 'move', $permErrors );
 112                 }
 113
 114                 $def = !$request->wasPosted();
 115
 116                 $this->reason = $request->getText( 'wpReason' );
 117                 $this->moveTalk = $request->getBool( 'wpMovetalk', $def );
 118                 $this->fixRedirects = $request->getBool( 'wpFixRedirects', $def );
 119                 $this->leaveRedirect = $request->getBool( 'wpLeaveRedirect', $def );
 120                 $this->moveSubpages = $request->getBool( 'wpMovesubpages', false );
 121                 $this->deleteAndMove = $request->getBool( 'wpDeleteAndMove' ) && $request->getBool( 'wpConfirm' );
 122                 $this->moveOverShared = $request->getBool( 'wpMoveOverSharedFile', false );
 123                 $this->watch = $request->getCheck( 'wpWatch' ) && $user->isLoggedIn();
 124
 125                 if ( 'submit' == $request->getVal( 'action' ) && $request->wasPosted()
 126                         && $user->matchEditToken( $request->getVal( 'wpEditToken' ) )
 127                 ) {
 128                         $this->doSubmit();
 129                 } else {
 130                         $this->showForm( array() );
 131                 }
 132         }
 133
 134         /**
 135          * Show the form
 136          *
 137          * @param array $err Error messages. Each item is an error message.
 138          *    It may either be a string message name or array message name and
 139          *    parameters, like the second argument to OutputPage::wrapWikiMsg().
 140          */
 141         function showForm( $err ) {
 142                 global $wgContLang;
 143
 144                 $this->getSkin()->setRelevantTitle( $this->oldTitle );
 145
 146                 $out = $this->getOutput();
 147                 $out->setPageTitle( $this->msg( 'move-page', $this->oldTitle->getPrefixedText() ) );
 148                 $out->addModules( 'mediawiki.special.movePage' );
 149                 $out->addModuleStyles( 'mediawiki.special.movePage.styles' );
 150                 $this->addHelpLink( 'Help:Moving a page' );
 151
 152                 $out->addWikiMsg( $this->getConfig()->get( 'FixDoubleRedirects' ) ?
 153                         'movepagetext' :
 154                         'movepagetext-noredirectfixer'
 155                 );
 156
 157                 if ( $this->oldTitle->getNamespace() == NS_USER && !$this->oldTitle->isSubpage() ) {
 158                         $out->wrapWikiMsg(
 159                                 "<div class=\"warningbox mw-moveuserpage-warning\">\n$1\n</div>",
 160                                 'moveuserpage-warning'
 161                         );
 162                 } elseif ( $this->oldTitle->getNamespace() == NS_CATEGORY ) {
 163                         $out->wrapWikiMsg(
 164                                 "<div class=\"warningbox mw-movecategorypage-warning\">\n$1\n</div>",
 165                                 'movecategorypage-warning'
 166                         );
 167                 }
 168
 169                 $submitVar = 'wpMove';
 170                 $confirm = false;
 171
 172                 $newTitle = $this->newTitle;
 173
 174                 if ( !$newTitle ) {
 175                         # Show the current title as a default
 176                         # when the form is first opened.
 177                         $newTitle = $this->oldTitle;
 178                 } elseif ( !count( $err ) ) {
 179                         # If a title was supplied, probably from the move log revert
 180                         # link, check for validity. We can then show some diagnostic
 181                         # information and save a click.
 182                         $newerr = $this->oldTitle->isValidMoveOperation( $newTitle );
 183                         if ( is_array( $newerr ) ) {
 184                                 $err = $newerr;
 185                         }
 186                 }
 187
 188                 $user = $this->getUser();
 189
 190                 if ( count( $err ) == 1 && isset( $err[0][0] ) && $err[0][0] == 'articleexists'
 191                         && $newTitle->quickUserCan( 'delete', $user )
 192                 ) {
 193                         $out->wrapWikiMsg(
 194                                 "<div class='warningbox'>\n$1\n</div>\n",
 195                                 array( 'delete_and_move_text', $newTitle->getPrefixedText() )
 196                         );
 197                         $submitVar = 'wpDeleteAndMove';
 198                         $confirm = true;
 199                         $err = array();
 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->wrapWikiMsg(
 206                                 "<div class='warningbox'>\n$1\n</div>\n",
 207                                 array(
 208                                         'move-over-sharedrepo',
 209                                         $newTitle->getPrefixedText()
 210                                 )
 211                         );
 212                         $submitVar = 'wpMoveOverSharedFile';
 213                         $err = array();
 214                 }
 215
 216                 $oldTalk = $this->oldTitle->getTalkPage();
 217                 $oldTitleSubpages = $this->oldTitle->hasSubpages();
 218                 $oldTitleTalkSubpages = $this->oldTitle->getTalkPage()->hasSubpages();
 219
 220                 $canMoveSubpage = ( $oldTitleSubpages || $oldTitleTalkSubpages ) &&
 221                         !count( $this->oldTitle->getUserPermissionsErrors( 'move-subpages', $user ) );
 222
 223                 # We also want to be able to move assoc. subpage talk-pages even if base page
 224                 # has no associated talk page, so || with $oldTitleTalkSubpages.
 225                 $considerTalk = !$this->oldTitle->isTalkPage() &&
 226                         ( $oldTalk->exists()
 227                                 || ( $oldTitleTalkSubpages && $canMoveSubpage ) );
 228
 229                 $dbr = wfGetDB( DB_SLAVE );
 230                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) ) {
 231                         $hasRedirects = $dbr->selectField( 'redirect', '1',
 232                                 array(
 233                                         'rd_namespace' => $this->oldTitle->getNamespace(),
 234                                         'rd_title' => $this->oldTitle->getDBkey(),
 235                                 ), __METHOD__ );
 236                 } else {
 237                         $hasRedirects = false;
 238                 }
 239
 240                 if ( count( $err ) ) {
 241                         $out->addHTML( "<div class='errorbox'>\n" );
 242                         $action_desc = $this->msg( 'action-move' )->plain();
 243                         $out->addWikiMsg( 'permissionserrorstext-withaction', count( $err ), $action_desc );
 244
 245                         if ( count( $err ) == 1 ) {
 246                                 $errMsg = $err[0];
 247                                 $errMsgName = array_shift( $errMsg );
 248
 249                                 if ( $errMsgName == 'hookaborted' ) {
 250                                         $out->addHTML( "<p>{$errMsg[0]}</p>\n" );
 251                                 } else {
 252                                         $out->addWikiMsgArray( $errMsgName, $errMsg );
 253                                 }
 254                         } else {
 255                                 $errStr = array();
 256
 257                                 foreach ( $err as $errMsg ) {
 258                                         if ( $errMsg[0] == 'hookaborted' ) {
 259                                                 $errStr[] = $errMsg[1];
 260                                         } else {
 261                                                 $errMsgName = array_shift( $errMsg );
 262                                                 $errStr[] = $this->msg( $errMsgName, $errMsg )->parse();
 263                                         }
 264                                 }
 265
 266                                 $out->addHTML( '<ul><li>' . implode( "</li>\n<li>", $errStr ) . "</li></ul>\n" );
 267                         }
 268                         $out->addHTML( "</div>\n" );
 269                 }
 270
 271                 if ( $this->oldTitle->isProtected( 'move' ) ) {
 272                         # Is the title semi-protected?
 273                         if ( $this->oldTitle->isSemiProtected( 'move' ) ) {
 274                                 $noticeMsg = 'semiprotectedpagemovewarning';
 275                                 $classes[] = 'mw-textarea-sprotected';
 276                         } else {
 277                                 # Then it must be protected based on static groups (regular)
 278                                 $noticeMsg = 'protectedpagemovewarning';
 279                                 $classes[] = 'mw-textarea-protected';
 280                         }
 281                         $out->addHTML( "<div class='mw-warning-with-logexcerpt'>\n" );
 282                         $out->addWikiMsg( $noticeMsg );
 283                         LogEventsList::showLogExtract(
 284                                 $out,
 285                                 'protect',
 286                                 $this->oldTitle,
 287                                 '',
 288                                 array( 'lim' => 1 )
 289                         );
 290                         $out->addHTML( "</div>\n" );
 291                 }
 292
 293                 // Byte limit (not string length limit) for wpReason and wpNewTitleMain
 294                 // is enforced in the mediawiki.special.movePage module
 295
 296                 $immovableNamespaces = array();
 297                 foreach ( array_keys( $this->getLanguage()->getNamespaces() ) as $nsId ) {
 298                         if ( !MWNamespace::isMovable( $nsId ) ) {
 299                                 $immovableNamespaces[] = $nsId;
 300                         }
 301                 }
 302
 303                 $handler = ContentHandler::getForTitle( $this->oldTitle );
 304
 305                 $out->enableOOUI();
 306                 $fields = array();
 307
 308                 $fields[] = new OOUI\FieldLayout(
 309                         new MediaWiki\Widget\ComplexTitleInputWidget( array(
 310                                 'id' => 'wpNewTitle',
 311                                 'namespace' => array(
 312                                         'id' => 'wpNewTitleNs',
 313                                         'name' => 'wpNewTitleNs',
 314                                         'value' => $newTitle->getNamespace(),
 315                                         'exclude' => $immovableNamespaces,
 316                                 ),
 317                                 'title' => array(
 318                                         'id' => 'wpNewTitleMain',
 319                                         'name' => 'wpNewTitleMain',
 320                                         'value' => $wgContLang->recodeForEdit( $newTitle->getText() ),
 321                                         // Inappropriate, since we're expecting the user to input a non-existent page's title
 322                                         'suggestions' => false,
 323                                 ),
 324                                 'infusable' => true,
 325                         ) ),
 326                         array(
 327                                 'label' => $this->msg( 'newtitle' )->text(),
 328                                 'align' => 'top',
 329                         )
 330                 );
 331
 332                 $fields[] = new OOUI\FieldLayout(
 333                         new OOUI\TextInputWidget( array(
 334                                 'name' => 'wpReason',
 335                                 'id' => 'wpReason',
 336                                 'maxLength' => 200,
 337                                 'infusable' => true,
 338                                 'value' => $this->reason,
 339                         ) ),
 340                         array(
 341                                 'label' => $this->msg( 'movereason' )->text(),
 342                                 'align' => 'top',
 343                         )
 344                 );
 345
 346                 if ( $considerTalk ) {
 347                         $fields[] = new OOUI\FieldLayout(
 348                                 new OOUI\CheckboxInputWidget( array(
 349                                         'name' => 'wpMovetalk',
 350                                         'id' => 'wpMovetalk',
 351                                         'value' => '1',
 352                                         'selected' => $this->moveTalk,
 353                                 ) ),
 354                                 array(
 355                                         'label' => $this->msg( 'movetalk' )->text(),
 356                                         'help' => new OOUI\HtmlSnippet( $this->msg( 'movepagetalktext' )->parseAsBlock() ),
 357                                         'align' => 'inline',
 358                                         'infusable' => true,
 359                                 )
 360                         );
 361                 }
 362
 363                 if ( $user->isAllowed( 'suppressredirect' ) ) {
 364                         if ( $handler->supportsRedirects() ) {
 365                                 $isChecked = $this->leaveRedirect;
 366                                 $isDisabled = false;
 367                         } else {
 368                                 $isChecked = false;
 369                                 $isDisabled = true;
 370                         }
 371                         $fields[] = new OOUI\FieldLayout(
 372                                 new OOUI\CheckboxInputWidget( array(
 373                                         'name' => 'wpLeaveRedirect',
 374                                         'id' => 'wpLeaveRedirect',
 375                                         'value' => '1',
 376                                         'selected' => $isChecked,
 377                                         'disabled' => $isDisabled,
 378                                 ) ),
 379                                 array(
 380                                         'label' => $this->msg( 'move-leave-redirect' )->text(),
 381                                         'align' => 'inline',
 382                                 )
 383                         );
 384                 }
 385
 386                 if ( $hasRedirects ) {
 387                         $fields[] = new OOUI\FieldLayout(
 388                                 new OOUI\CheckboxInputWidget( array(
 389                                         'name' => 'wpFixRedirects',
 390                                         'id' => 'wpFixRedirects',
 391                                         'value' => '1',
 392                                         'selected' => $this->fixRedirects,
 393                                 ) ),
 394                                 array(
 395                                         'label' => $this->msg( 'fix-double-redirects' )->text(),
 396                                         'align' => 'inline',
 397                                 )
 398                         );
 399                 }
 400
 401                 if ( $canMoveSubpage ) {
 402                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 403                         $fields[] = new OOUI\FieldLayout(
 404                                 new OOUI\CheckboxInputWidget( array(
 405                                         'name' => 'wpMovesubpages',
 406                                         'id' => 'wpMovesubpages',
 407                                         'value' => '1',
 408                                         # Don't check the box if we only have talk subpages to
 409                                         # move and we aren't moving the talk page.
 410                                         'selected' => $this->moveSubpages && ( $this->oldTitle->hasSubpages() || $this->moveTalk ),
 411                                 ) ),
 412                                 array(
 413                                         'label' => new OOUI\HtmlSnippet(
 414                                                 $this->msg(
 415                                                         ( $this->oldTitle->hasSubpages()
 416                                                                 ? 'move-subpages'
 417                                                                 : 'move-talk-subpages' )
 418                                                 )->numParams( $maximumMovedPages )->params( $maximumMovedPages )->parse()
 419                                         ),
 420                                         'align' => 'inline',
 421                                 )
 422                         );
 423                 }
 424
 425                 # Don't allow watching if user is not logged in
 426                 if ( $user->isLoggedIn() ) {
 427                         $watchChecked = $user->isLoggedIn() && ( $this->watch || $user->getBoolOption( 'watchmoves' )
 428                                 || $user->isWatched( $this->oldTitle ) );
 429                         $fields[] = new OOUI\FieldLayout(
 430                                 new OOUI\CheckboxInputWidget( array(
 431                                         'name' => 'wpWatch',
 432                                         'id' => 'watch', # ew
 433                                         'value' => '1',
 434                                         'selected' => $watchChecked,
 435                                 ) ),
 436                                 array(
 437                                         'label' => $this->msg( 'move-watch' )->text(),
 438                                         'align' => 'inline',
 439                                 )
 440                         );
 441                 }
 442
 443                 if ( $confirm ) {
 444                         $fields[] = new OOUI\FieldLayout(
 445                                 new OOUI\CheckboxInputWidget( array(
 446                                         'name' => 'wpConfirm',
 447                                         'id' => 'wpConfirm',
 448                                         'value' => '1',
 449                                 ) ),
 450                                 array(
 451                                         'label' => $this->msg( 'delete_and_move_confirm' )->text(),
 452                                         'align' => 'inline',
 453                                 )
 454                         );
 455                 }
 456
 457                 $fields[] = new OOUI\FieldLayout(
 458                         new OOUI\ButtonInputWidget( array(
 459                                 'name' => $submitVar,
 460                                 'value' => $this->msg( 'movepagebtn' )->text(),
 461                                 'label' => $this->msg( 'movepagebtn' )->text(),
 462                                 'flags' => array( 'constructive', 'primary' ),
 463                                 'type' => 'submit',
 464                         ) ),
 465                         array(
 466                                 'align' => 'top',
 467                         )
 468                 );
 469
 470                 $fieldset = new OOUI\FieldsetLayout( array(
 471                         'label' => $this->msg( 'move-page-legend' )->text(),
 472                         'id' => 'mw-movepage-table',
 473                         'items' => $fields,
 474                 ) );
 475
 476                 $form = new OOUI\FormLayout( array(
 477                         'method' => 'post',
 478                         'action' => $this->getPageTitle()->getLocalURL( 'action=submit' ),
 479                         'id' => 'movepage',
 480                 ) );
 481                 $form->appendContent(
 482                         $fieldset,
 483                         new OOUI\HtmlSnippet(
 484                                 Html::hidden( 'wpOldTitle', $this->oldTitle->getPrefixedText() ) .
 485                                 Html::hidden( 'wpEditToken', $user->getEditToken() )
 486                         )
 487                 );
 488
 489                 $out->addHTML(
 490                         new OOUI\PanelLayout( array(
 491                                 'classes' => array( 'movepage-wrapper' ),
 492                                 'expanded' => false,
 493                                 'padded' => true,
 494                                 'framed' => true,
 495                                 'content' => $form,
 496                         ) )
 497                 );
 498
 499                 $this->showLogFragment( $this->oldTitle );
 500                 $this->showSubpages( $this->oldTitle );
 501         }
 502
 503         function doSubmit() {
 504                 $user = $this->getUser();
 505
 506                 if ( $user->pingLimiter( 'move' ) ) {
 507                         throw new ThrottledError;
 508                 }
 509
 510                 $ot = $this->oldTitle;
 511                 $nt = $this->newTitle;
 512
 513                 # don't allow moving to pages with # in
 514                 if ( !$nt || $nt->hasFragment() ) {
 515                         $this->showForm( array( array( 'badtitletext' ) ) );
 516
 517                         return;
 518                 }
 519
 520                 # Show a warning if the target file exists on a shared repo
 521                 if ( $nt->getNamespace() == NS_FILE
 522                         && !( $this->moveOverShared && $user->isAllowed( 'reupload-shared' ) )
 523                         && !RepoGroup::singleton()->getLocalRepo()->findFile( $nt )
 524                         && wfFindFile( $nt )
 525                 ) {
 526                         $this->showForm( array( array( 'file-exists-sharedrepo' ) ) );
 527
 528                         return;
 529                 }
 530
 531                 # Delete to make way if requested
 532                 if ( $this->deleteAndMove ) {
 533                         $permErrors = $nt->getUserPermissionsErrors( 'delete', $user );
 534                         if ( count( $permErrors ) ) {
 535                                 # Only show the first error
 536                                 $this->showForm( $permErrors );
 537
 538                                 return;
 539                         }
 540
 541                         $reason = $this->msg( 'delete_and_move_reason', $ot )->inContentLanguage()->text();
 542
 543                         // Delete an associated image if there is
 544                         if ( $nt->getNamespace() == NS_FILE ) {
 545                                 $file = wfLocalFile( $nt );
 546                                 $file->load( File::READ_LATEST );
 547                                 if ( $file->exists() ) {
 548                                         $file->delete( $reason, false, $user );
 549                                 }
 550                         }
 551
 552                         $error = ''; // passed by ref
 553                         $page = WikiPage::factory( $nt );
 554                         $deleteStatus = $page->doDeleteArticleReal( $reason, false, 0, true, $error, $user );
 555                         if ( !$deleteStatus->isGood() ) {
 556                                 $this->showForm( $deleteStatus->getErrorsArray() );
 557
 558                                 return;
 559                         }
 560                 }
 561
 562                 $handler = ContentHandler::getForTitle( $ot );
 563
 564                 if ( !$handler->supportsRedirects() ) {
 565                         $createRedirect = false;
 566                 } elseif ( $user->isAllowed( 'suppressredirect' ) ) {
 567                         $createRedirect = $this->leaveRedirect;
 568                 } else {
 569                         $createRedirect = true;
 570                 }
 571
 572                 # Do the actual move.
 573                 $mp = new MovePage( $ot, $nt );
 574                 $valid = $mp->isValidMove();
 575                 if ( !$valid->isOK() ) {
 576                         $this->showForm( $valid->getErrorsArray() );
 577                         return;
 578                 }
 579
 580                 $permStatus = $mp->checkPermissions( $user, $this->reason );
 581                 if ( !$permStatus->isOK() ) {
 582                         $this->showForm( $permStatus->getErrorsArray() );
 583                         return;
 584                 }
 585
 586                 $status = $mp->move( $user, $this->reason, $createRedirect );
 587                 if ( !$status->isOK() ) {
 588                         $this->showForm( $status->getErrorsArray() );
 589                         return;
 590                 }
 591
 592                 if ( $this->getConfig()->get( 'FixDoubleRedirects' ) && $this->fixRedirects ) {
 593                         DoubleRedirectJob::fixRedirects( 'move', $ot, $nt );
 594                 }
 595
 596                 $out = $this->getOutput();
 597                 $out->setPageTitle( $this->msg( 'pagemovedsub' ) );
 598
 599                 $oldLink = Linker::link(
 600                         $ot,
 601                         null,
 602                         array( 'id' => 'movepage-oldlink' ),
 603                         array( 'redirect' => 'no' )
 604                 );
 605                 $newLink = Linker::linkKnown(
 606                         $nt,
 607                         null,
 608                         array( 'id' => 'movepage-newlink' )
 609                 );
 610                 $oldText = $ot->getPrefixedText();
 611                 $newText = $nt->getPrefixedText();
 612
 613                 if ( $ot->exists() ) {
 614                         // NOTE: we assume that if the old title exists, it's because it was re-created as
 615                         // a redirect to the new title. This is not safe, but what we did before was
 616                         // even worse: we just determined whether a redirect should have been created,
 617                         // and reported that it was created if it should have, without any checks.
 618                         // Also note that isRedirect() is unreliable because of bug 37209.
 619                         $msgName = 'movepage-moved-redirect';
 620                 } else {
 621                         $msgName = 'movepage-moved-noredirect';
 622                 }
 623
 624                 $out->addHTML( $this->msg( 'movepage-moved' )->rawParams( $oldLink,
 625                         $newLink )->params( $oldText, $newText )->parseAsBlock() );
 626                 $out->addWikiMsg( $msgName );
 627
 628                 Hooks::run( 'SpecialMovepageAfterMove', array( &$this, &$ot, &$nt ) );
 629
 630                 # Now we move extra pages we've been asked to move: subpages and talk
 631                 # pages.  First, if the old page or the new page is a talk page, we
 632                 # can't move any talk pages: cancel that.
 633                 if ( $ot->isTalkPage() || $nt->isTalkPage() ) {
 634                         $this->moveTalk = false;
 635                 }
 636
 637                 if ( count( $ot->getUserPermissionsErrors( 'move-subpages', $user ) ) ) {
 638                         $this->moveSubpages = false;
 639                 }
 640
 641                 /**
 642                  * Next make a list of id's.  This might be marginally less efficient
 643                  * than a more direct method, but this is not a highly performance-cri-
 644                  * tical code path and readable code is more important here.
 645                  *
 646                  * If the target namespace doesn't allow subpages, moving with subpages
 647                  * would mean that you couldn't move them back in one operation, which
 648                  * is bad.
 649                  * @todo FIXME: A specific error message should be given in this case.
 650                  */
 651
 652                 // @todo FIXME: Use Title::moveSubpages() here
 653                 $dbr = wfGetDB( DB_MASTER );
 654                 if ( $this->moveSubpages && (
 655                         MWNamespace::hasSubpages( $nt->getNamespace() ) || (
 656                                 $this->moveTalk
 657                                         && MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 658                         )
 659                 ) ) {
 660                         $conds = array(
 661                                 'page_title' . $dbr->buildLike( $ot->getDBkey() . '/', $dbr->anyString() )
 662                                         . ' OR page_title = ' . $dbr->addQuotes( $ot->getDBkey() )
 663                         );
 664                         $conds['page_namespace'] = array();
 665                         if ( MWNamespace::hasSubpages( $nt->getNamespace() ) ) {
 666                                 $conds['page_namespace'][] = $ot->getNamespace();
 667                         }
 668                         if ( $this->moveTalk &&
 669                                 MWNamespace::hasSubpages( $nt->getTalkPage()->getNamespace() )
 670                         ) {
 671                                 $conds['page_namespace'][] = $ot->getTalkPage()->getNamespace();
 672                         }
 673                 } elseif ( $this->moveTalk ) {
 674                         $conds = array(
 675                                 'page_namespace' => $ot->getTalkPage()->getNamespace(),
 676                                 'page_title' => $ot->getDBkey()
 677                         );
 678                 } else {
 679                         # Skip the query
 680                         $conds = null;
 681                 }
 682
 683                 $extraPages = array();
 684                 if ( !is_null( $conds ) ) {
 685                         $extraPages = TitleArray::newFromResult(
 686                                 $dbr->select( 'page',
 687                                         array( 'page_id', 'page_namespace', 'page_title' ),
 688                                         $conds,
 689                                         __METHOD__
 690                                 )
 691                         );
 692                 }
 693
 694                 $extraOutput = array();
 695                 $count = 1;
 696                 foreach ( $extraPages as $oldSubpage ) {
 697                         if ( $ot->equals( $oldSubpage ) || $nt->equals( $oldSubpage ) ) {
 698                                 # Already did this one.
 699                                 continue;
 700                         }
 701
 702                         $newPageName = preg_replace(
 703                                 '#^' . preg_quote( $ot->getDBkey(), '#' ) . '#',
 704                                 StringUtils::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
 705                                 $oldSubpage->getDBkey()
 706                         );
 707
 708                         if ( $oldSubpage->isSubpage() && ( $ot->isTalkPage() xor $nt->isTalkPage() ) ) {
 709                                 // Moving a subpage from a subject namespace to a talk namespace or vice-versa
 710                                 $newNs = $nt->getNamespace();
 711                         } elseif ( $oldSubpage->isTalkPage() ) {
 712                                 $newNs = $nt->getTalkPage()->getNamespace();
 713                         } else {
 714                                 $newNs = $nt->getSubjectPage()->getNamespace();
 715                         }
 716
 717                         # Bug 14385: we need makeTitleSafe because the new page names may
 718                         # be longer than 255 characters.
 719                         $newSubpage = Title::makeTitleSafe( $newNs, $newPageName );
 720                         if ( !$newSubpage ) {
 721                                 $oldLink = Linker::linkKnown( $oldSubpage );
 722                                 $extraOutput[] = $this->msg( 'movepage-page-unmoved' )->rawParams( $oldLink )
 723                                         ->params( Title::makeName( $newNs, $newPageName ) )->escaped();
 724                                 continue;
 725                         }
 726
 727                         # This was copy-pasted from Renameuser, bleh.
 728                         if ( $newSubpage->exists() && !$oldSubpage->isValidMoveTarget( $newSubpage ) ) {
 729                                 $link = Linker::linkKnown( $newSubpage );
 730                                 $extraOutput[] = $this->msg( 'movepage-page-exists' )->rawParams( $link )->escaped();
 731                         } else {
 732                                 $success = $oldSubpage->moveTo( $newSubpage, true, $this->reason, $createRedirect );
 733
 734                                 if ( $success === true ) {
 735                                         if ( $this->fixRedirects ) {
 736                                                 DoubleRedirectJob::fixRedirects( 'move', $oldSubpage, $newSubpage );
 737                                         }
 738                                         $oldLink = Linker::link(
 739                                                 $oldSubpage,
 740                                                 null,
 741                                                 array(),
 742                                                 array( 'redirect' => 'no' )
 743                                         );
 744
 745                                         $newLink = Linker::linkKnown( $newSubpage );
 746                                         $extraOutput[] = $this->msg( 'movepage-page-moved' )
 747                                                 ->rawParams( $oldLink, $newLink )->escaped();
 748                                         ++$count;
 749
 750                                         $maximumMovedPages = $this->getConfig()->get( 'MaximumMovedPages' );
 751                                         if ( $count >= $maximumMovedPages ) {
 752                                                 $extraOutput[] = $this->msg( 'movepage-max-pages' )
 753                                                         ->numParams( $maximumMovedPages )->escaped();
 754                                                 break;
 755                                         }
 756                                 } else {
 757                                         $oldLink = Linker::linkKnown( $oldSubpage );
 758                                         $newLink = Linker::link( $newSubpage );
 759                                         $extraOutput[] = $this->msg( 'movepage-page-unmoved' )
 760                                                 ->rawParams( $oldLink, $newLink )->escaped();
 761                                 }
 762                         }
 763                 }
 764
 765                 if ( $extraOutput !== array() ) {
 766                         $out->addHTML( "<ul>\n<li>" . implode( "</li>\n<li>", $extraOutput ) . "</li>\n</ul>" );
 767                 }
 768
 769                 # Deal with watches (we don't watch subpages)
 770                 WatchAction::doWatchOrUnwatch( $this->watch, $ot, $user );
 771                 WatchAction::doWatchOrUnwatch( $this->watch, $nt, $user );
 772         }
 773
 774         function showLogFragment( $title ) {
 775                 $moveLogPage = new LogPage( 'move' );
 776                 $out = $this->getOutput();
 777                 $out->addHTML( Xml::element( 'h2', null, $moveLogPage->getName()->text() ) );
 778                 LogEventsList::showLogExtract( $out, 'move', $title );
 779         }
 780
 781         function showSubpages( $title ) {
 782                 if ( !MWNamespace::hasSubpages( $title->getNamespace() ) ) {
 783                         return;
 784                 }
 785
 786                 $subpages = $title->getSubpages();
 787                 $count = $subpages instanceof TitleArray ? $subpages->count() : 0;
 788
 789                 $out = $this->getOutput();
 790                 $out->wrapWikiMsg( '== $1 ==', array( 'movesubpage', $count ) );
 791
 792                 # No subpages.
 793                 if ( $count == 0 ) {
 794                         $out->addWikiMsg( 'movenosubpage' );
 795
 796                         return;
 797                 }
 798
 799                 $out->addWikiMsg( 'movesubpagetext', $this->getLanguage()->formatNum( $count ) );
 800                 $out->addHTML( "<ul>\n" );
 801
 802                 foreach ( $subpages as $subpage ) {
 803                         $link = Linker::link( $subpage );
 804                         $out->addHTML( "<li>$link</li>\n" );
 805                 }
 806                 $out->addHTML( "</ul>\n" );
 807         }
 808
 809         /**
 810          * Return an array of subpages beginning with $search that this special page will accept.
 811          *
 812          * @param string $search Prefix to search for
 813          * @param int $limit Maximum number of results to return (usually 10)
 814          * @param int $offset Number of results to skip (usually 0)
 815          * @return string[] Matching subpages
 816          */
 817         public function prefixSearchSubpages( $search, $limit, $offset ) {
 818                 $title = Title::newFromText( $search );
 819                 if ( !$title || !$title->canExist() ) {
 820                         // No prefix suggestion in special and media namespace
 821                         return array();
 822                 }
 823                 // Autocomplete subpage the same as a normal search
 824                 $prefixSearcher = new StringPrefixSearch;
 825                 $result = $prefixSearcher->search( $search, $limit, array(), $offset );
 826                 return $result;
 827         }
 828
 829         protected function getGroupName() {
 830                 return 'pagetools';
 831         }
 832 }