includes/specials/SpecialEditWatchlist.php

   1 <?php
   2 /**
   3  * @defgroup Watchlist Users watchlist handling
   4  */
   5
   6 /**
   7  * Implements Special:EditWatchlist
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  * @ingroup SpecialPage
  26  * @ingroup Watchlist
  27  */
  28
  29 /**
  30  * Provides the UI through which users can perform editing
  31  * operations on their watchlist
  32  *
  33  * @ingroup SpecialPage
  34  * @ingroup Watchlist
  35  * @author Rob Church <robchur@gmail.com>
  36  */
  37 class SpecialEditWatchlist extends UnlistedSpecialPage {
  38         /**
  39          * Editing modes. EDIT_CLEAR is no longer used; the "Clear" link scared people
  40          * too much. Now it's passed on to the raw editor, from which it's very easy to clear.
  41          */
  42         const EDIT_CLEAR = 1;
  43         const EDIT_RAW = 2;
  44         const EDIT_NORMAL = 3;
  45
  46         protected $successMessage;
  47
  48         protected $toc;
  49
  50         private $badItems = array();
  51
  52         public function __construct() {
  53                 parent::__construct( 'EditWatchlist', 'editmywatchlist' );
  54         }
  55
  56         /**
  57          * Main execution point
  58          *
  59          * @param $mode int
  60          */
  61         public function execute( $mode ) {
  62                 $this->setHeaders();
  63
  64                 $out = $this->getOutput();
  65
  66                 # Anons don't get a watchlist
  67                 if ( $this->getUser()->isAnon() ) {
  68                         $out->setPageTitle( $this->msg( 'watchnologin' ) );
  69                         $llink = Linker::linkKnown(
  70                                 SpecialPage::getTitleFor( 'Userlogin' ),
  71                                 $this->msg( 'loginreqlink' )->escaped(),
  72                                 array(),
  73                                 array( 'returnto' => $this->getTitle()->getPrefixedText() )
  74                         );
  75                         $out->addHTML( $this->msg( 'watchlistanontext' )->rawParams( $llink )->parse() );
  76
  77                         return;
  78                 }
  79
  80                 $this->checkPermissions();
  81                 $this->checkReadOnly();
  82
  83                 $this->outputHeader();
  84
  85                 $out->addSubtitle( $this->msg( 'watchlistfor2', $this->getUser()->getName() )
  86                         ->rawParams( SpecialEditWatchlist::buildTools( null ) ) );
  87
  88                 # B/C: $mode used to be waaay down the parameter list, and the first parameter
  89                 # was $wgUser
  90                 if ( $mode instanceof User ) {
  91                         $args = func_get_args();
  92                         if ( count( $args ) >= 4 ) {
  93                                 $mode = $args[3];
  94                         }
  95                 }
  96                 $mode = self::getMode( $this->getRequest(), $mode );
  97
  98                 switch ( $mode ) {
  99                         case self::EDIT_RAW:
 100                                 $out->setPageTitle( $this->msg( 'watchlistedit-raw-title' ) );
 101                                 $form = $this->getRawForm();
 102                                 if ( $form->show() ) {
 103                                         $out->addHTML( $this->successMessage );
 104                                         $out->addReturnTo( SpecialPage::getTitleFor( 'Watchlist' ) );
 105                                 }
 106                                 break;
 107
 108                         case self::EDIT_NORMAL:
 109                         default:
 110                                 $out->setPageTitle( $this->msg( 'watchlistedit-normal-title' ) );
 111                                 $form = $this->getNormalForm();
 112                                 if ( $form->show() ) {
 113                                         $out->addHTML( $this->successMessage );
 114                                         $out->addReturnTo( SpecialPage::getTitleFor( 'Watchlist' ) );
 115                                 } elseif ( $this->toc !== false ) {
 116                                         $out->prependHTML( $this->toc );
 117                                 }
 118                                 break;
 119                 }
 120         }
 121
 122         /**
 123          * Extract a list of titles from a blob of text, returning
 124          * (prefixed) strings; unwatchable titles are ignored
 125          *
 126          * @param $list String
 127          * @return array
 128          */
 129         private function extractTitles( $list ) {
 130                 $list = explode( "\n", trim( $list ) );
 131                 if ( !is_array( $list ) ) {
 132                         return array();
 133                 }
 134
 135                 $titles = array();
 136
 137                 foreach ( $list as $text ) {
 138                         $text = trim( $text );
 139                         if ( strlen( $text ) > 0 ) {
 140                                 $title = Title::newFromText( $text );
 141                                 if ( $title instanceof Title && $title->isWatchable() ) {
 142                                         $titles[] = $title;
 143                                 }
 144                         }
 145                 }
 146
 147                 GenderCache::singleton()->doTitlesArray( $titles );
 148
 149                 $list = array();
 150                 /** @var Title $title */
 151                 foreach ( $titles as $title ) {
 152                         $list[] = $title->getPrefixedText();
 153                 }
 154
 155                 return array_unique( $list );
 156         }
 157
 158         public function submitRaw( $data ) {
 159                 $wanted = $this->extractTitles( $data['Titles'] );
 160                 $current = $this->getWatchlist();
 161
 162                 if ( count( $wanted ) > 0 ) {
 163                         $toWatch = array_diff( $wanted, $current );
 164                         $toUnwatch = array_diff( $current, $wanted );
 165                         $this->watchTitles( $toWatch );
 166                         $this->unwatchTitles( $toUnwatch );
 167                         $this->getUser()->invalidateCache();
 168
 169                         if ( count( $toWatch ) > 0 || count( $toUnwatch ) > 0 ) {
 170                                 $this->successMessage = $this->msg( 'watchlistedit-raw-done' )->parse();
 171                         } else {
 172                                 return false;
 173                         }
 174
 175                         if ( count( $toWatch ) > 0 ) {
 176                                 $this->successMessage .= ' ' . $this->msg( 'watchlistedit-raw-added'
 177                                 )->numParams( count( $toWatch ) )->parse();
 178                                 $this->showTitles( $toWatch, $this->successMessage );
 179                         }
 180
 181                         if ( count( $toUnwatch ) > 0 ) {
 182                                 $this->successMessage .= ' ' . $this->msg( 'watchlistedit-raw-removed'
 183                                 )->numParams( count( $toUnwatch ) )->parse();
 184                                 $this->showTitles( $toUnwatch, $this->successMessage );
 185                         }
 186                 } else {
 187                         $this->clearWatchlist();
 188                         $this->getUser()->invalidateCache();
 189
 190                         if ( count( $current ) > 0 ) {
 191                                 $this->successMessage = $this->msg( 'watchlistedit-raw-done' )->parse();
 192                         } else {
 193                                 return false;
 194                         }
 195
 196                         $this->successMessage .= ' ' . $this->msg( 'watchlistedit-raw-removed' )
 197                                 ->numParams( count( $current ) )->parse();
 198                         $this->showTitles( $current, $this->successMessage );
 199                 }
 200
 201                 return true;
 202         }
 203
 204         /**
 205          * Print out a list of linked titles
 206          *
 207          * $titles can be an array of strings or Title objects; the former
 208          * is preferred, since Titles are very memory-heavy
 209          *
 210          * @param array $titles of strings, or Title objects
 211          * @param $output String
 212          */
 213         private function showTitles( $titles, &$output ) {
 214                 $talk = $this->msg( 'talkpagelinktext' )->escaped();
 215                 // Do a batch existence check
 216                 $batch = new LinkBatch();
 217                 foreach ( $titles as $title ) {
 218                         if ( !$title instanceof Title ) {
 219                                 $title = Title::newFromText( $title );
 220                         }
 221
 222                         if ( $title instanceof Title ) {
 223                                 $batch->addObj( $title );
 224                                 $batch->addObj( $title->getTalkPage() );
 225                         }
 226                 }
 227
 228                 $batch->execute();
 229
 230                 // Print out the list
 231                 $output .= "<ul>\n";
 232
 233                 foreach ( $titles as $title ) {
 234                         if ( !$title instanceof Title ) {
 235                                 $title = Title::newFromText( $title );
 236                         }
 237
 238                         if ( $title instanceof Title ) {
 239                                 $output .= "<li>"
 240                                         . Linker::link( $title )
 241                                         . ' (' . Linker::link( $title->getTalkPage(), $talk )
 242                                         . ")</li>\n";
 243                         }
 244                 }
 245
 246                 $output .= "</ul>\n";
 247         }
 248
 249         /**
 250          * Prepare a list of titles on a user's watchlist (excluding talk pages)
 251          * and return an array of (prefixed) strings
 252          *
 253          * @return array
 254          */
 255         private function getWatchlist() {
 256                 $list = array();
 257                 $dbr = wfGetDB( DB_MASTER );
 258
 259                 $res = $dbr->select(
 260                         'watchlist',
 261                         array(
 262                                 'wl_namespace', 'wl_title'
 263                         ), array(
 264                                 'wl_user' => $this->getUser()->getId(),
 265                         ),
 266                         __METHOD__
 267                 );
 268
 269                 if ( $res->numRows() > 0 ) {
 270                         $titles = array();
 271                         foreach ( $res as $row ) {
 272                                 $title = Title::makeTitleSafe( $row->wl_namespace, $row->wl_title );
 273
 274                                 if ( $this->checkTitle( $title, $row->wl_namespace, $row->wl_title )
 275                                         && !$title->isTalkPage()
 276                                 ) {
 277                                         $titles[] = $title;
 278                                 }
 279                         }
 280                         $res->free();
 281
 282                         GenderCache::singleton()->doTitlesArray( $titles );
 283
 284                         foreach ( $titles as $title ) {
 285                                 $list[] = $title->getPrefixedText();
 286                         }
 287                 }
 288
 289                 $this->cleanupWatchlist();
 290
 291                 return $list;
 292         }
 293
 294         /**
 295          * Get a list of titles on a user's watchlist, excluding talk pages,
 296          * and return as a two-dimensional array with namespace and title.
 297          *
 298          * @return array
 299          */
 300         private function getWatchlistInfo() {
 301                 $titles = array();
 302                 $dbr = wfGetDB( DB_MASTER );
 303
 304                 $res = $dbr->select(
 305                         array( 'watchlist' ),
 306                         array( 'wl_namespace', 'wl_title' ),
 307                         array( 'wl_user' => $this->getUser()->getId() ),
 308                         __METHOD__,
 309                         array( 'ORDER BY' => array( 'wl_namespace', 'wl_title' ) )
 310                 );
 311
 312                 $lb = new LinkBatch();
 313
 314                 foreach ( $res as $row ) {
 315                         $lb->add( $row->wl_namespace, $row->wl_title );
 316                         if ( !MWNamespace::isTalk( $row->wl_namespace ) ) {
 317                                 $titles[$row->wl_namespace][$row->wl_title] = 1;
 318                         }
 319                 }
 320
 321                 $lb->execute();
 322
 323                 return $titles;
 324         }
 325
 326         /**
 327          * Validates watchlist entry
 328          *
 329          * @param Title $title
 330          * @param int $namespace
 331          * @param string $dbKey
 332          * @return bool: Whether this item is valid
 333          */
 334         private function checkTitle( $title, $namespace, $dbKey ) {
 335                 if ( $title
 336                         && ( $title->isExternal()
 337                                 || $title->getNamespace() < 0
 338                         )
 339                 ) {
 340                         $title = false; // unrecoverable
 341                 }
 342
 343                 if ( !$title
 344                         || $title->getNamespace() != $namespace
 345                         || $title->getDBkey() != $dbKey
 346                 ) {
 347                         $this->badItems[] = array( $title, $namespace, $dbKey );
 348                 }
 349
 350                 return (bool)$title;
 351         }
 352
 353         /**
 354          * Attempts to clean up broken items
 355          */
 356         private function cleanupWatchlist() {
 357                 if ( !count( $this->badItems ) ) {
 358                         return; //nothing to do
 359                 }
 360
 361                 $dbw = wfGetDB( DB_MASTER );
 362                 $user = $this->getUser();
 363
 364                 foreach ( $this->badItems as $row ) {
 365                         list( $title, $namespace, $dbKey ) = $row;
 366                         $action = $title ? 'cleaning up' : 'deleting';
 367                         wfDebug( "User {$user->getName()} has broken watchlist item ns($namespace):$dbKey, $action.\n" );
 368
 369                         $dbw->delete( 'watchlist',
 370                                 array(
 371                                         'wl_user' => $user->getId(),
 372                                         'wl_namespace' => $namespace,
 373                                         'wl_title' => $dbKey,
 374                                 ),
 375                                 __METHOD__
 376                         );
 377
 378                         // Can't just do an UPDATE instead of DELETE/INSERT due to unique index
 379                         if ( $title ) {
 380                                 $user->addWatch( $title );
 381                         }
 382                 }
 383         }
 384
 385         /**
 386          * Remove all titles from a user's watchlist
 387          */
 388         private function clearWatchlist() {
 389                 $dbw = wfGetDB( DB_MASTER );
 390                 $dbw->delete(
 391                         'watchlist',
 392                         array( 'wl_user' => $this->getUser()->getId() ),
 393                         __METHOD__
 394                 );
 395         }
 396
 397         /**
 398          * Add a list of titles to a user's watchlist
 399          *
 400          * $titles can be an array of strings or Title objects; the former
 401          * is preferred, since Titles are very memory-heavy
 402          *
 403          * @param array $titles of strings, or Title objects
 404          */
 405         private function watchTitles( $titles ) {
 406                 $dbw = wfGetDB( DB_MASTER );
 407                 $rows = array();
 408
 409                 foreach ( $titles as $title ) {
 410                         if ( !$title instanceof Title ) {
 411                                 $title = Title::newFromText( $title );
 412                         }
 413
 414                         if ( $title instanceof Title ) {
 415                                 $rows[] = array(
 416                                         'wl_user' => $this->getUser()->getId(),
 417                                         'wl_namespace' => MWNamespace::getSubject( $title->getNamespace() ),
 418                                         'wl_title' => $title->getDBkey(),
 419                                         'wl_notificationtimestamp' => null,
 420                                 );
 421                                 $rows[] = array(
 422                                         'wl_user' => $this->getUser()->getId(),
 423                                         'wl_namespace' => MWNamespace::getTalk( $title->getNamespace() ),
 424                                         'wl_title' => $title->getDBkey(),
 425                                         'wl_notificationtimestamp' => null,
 426                                 );
 427                         }
 428                 }
 429
 430                 $dbw->insert( 'watchlist', $rows, __METHOD__, 'IGNORE' );
 431         }
 432
 433         /**
 434          * Remove a list of titles from a user's watchlist
 435          *
 436          * $titles can be an array of strings or Title objects; the former
 437          * is preferred, since Titles are very memory-heavy
 438          *
 439          * @param array $titles of strings, or Title objects
 440          */
 441         private function unwatchTitles( $titles ) {
 442                 $dbw = wfGetDB( DB_MASTER );
 443
 444                 foreach ( $titles as $title ) {
 445                         if ( !$title instanceof Title ) {
 446                                 $title = Title::newFromText( $title );
 447                         }
 448
 449                         if ( $title instanceof Title ) {
 450                                 $dbw->delete(
 451                                         'watchlist',
 452                                         array(
 453                                                 'wl_user' => $this->getUser()->getId(),
 454                                                 'wl_namespace' => MWNamespace::getSubject( $title->getNamespace() ),
 455                                                 'wl_title' => $title->getDBkey(),
 456                                         ),
 457                                         __METHOD__
 458                                 );
 459
 460                                 $dbw->delete(
 461                                         'watchlist',
 462                                         array(
 463                                                 'wl_user' => $this->getUser()->getId(),
 464                                                 'wl_namespace' => MWNamespace::getTalk( $title->getNamespace() ),
 465                                                 'wl_title' => $title->getDBkey(),
 466                                         ),
 467                                         __METHOD__
 468                                 );
 469
 470                                 $page = WikiPage::factory( $title );
 471                                 wfRunHooks( 'UnwatchArticleComplete', array( $this->getUser(), &$page ) );
 472                         }
 473                 }
 474         }
 475
 476         public function submitNormal( $data ) {
 477                 $removed = array();
 478
 479                 foreach ( $data as $titles ) {
 480                         $this->unwatchTitles( $titles );
 481                         $removed = array_merge( $removed, $titles );
 482                 }
 483
 484                 if ( count( $removed ) > 0 ) {
 485                         $this->successMessage = $this->msg( 'watchlistedit-normal-done'
 486                         )->numParams( count( $removed ) )->parse();
 487                         $this->showTitles( $removed, $this->successMessage );
 488
 489                         return true;
 490                 } else {
 491                         return false;
 492                 }
 493         }
 494
 495         /**
 496          * Get the standard watchlist editing form
 497          *
 498          * @return HTMLForm
 499          */
 500         protected function getNormalForm() {
 501                 global $wgContLang;
 502
 503                 $fields = array();
 504                 $count = 0;
 505
 506                 foreach ( $this->getWatchlistInfo() as $namespace => $pages ) {
 507                         if ( $namespace >= 0 ) {
 508                                 $fields['TitlesNs' . $namespace] = array(
 509                                         'class' => 'EditWatchlistCheckboxSeriesField',
 510                                         'options' => array(),
 511                                         'section' => "ns$namespace",
 512                                 );
 513                         }
 514
 515                         foreach ( array_keys( $pages ) as $dbkey ) {
 516                                 $title = Title::makeTitleSafe( $namespace, $dbkey );
 517
 518                                 if ( $this->checkTitle( $title, $namespace, $dbkey ) ) {
 519                                         $text = $this->buildRemoveLine( $title );
 520                                         $fields['TitlesNs' . $namespace]['options'][$text] = $title->getPrefixedText();
 521                                         $count++;
 522                                 }
 523                         }
 524                 }
 525                 $this->cleanupWatchlist();
 526
 527                 if ( count( $fields ) > 1 && $count > 30 ) {
 528                         $this->toc = Linker::tocIndent();
 529                         $tocLength = 0;
 530
 531                         foreach ( $fields as $data ) {
 532                                 # strip out the 'ns' prefix from the section name:
 533                                 $ns = substr( $data['section'], 2 );
 534
 535                                 $nsText = ( $ns == NS_MAIN )
 536                                         ? $this->msg( 'blanknamespace' )->escaped()
 537                                         : htmlspecialchars( $wgContLang->getFormattedNsText( $ns ) );
 538                                 $this->toc .= Linker::tocLine( "editwatchlist-{$data['section']}", $nsText,
 539                                         $this->getLanguage()->formatNum( ++$tocLength ), 1 ) . Linker::tocLineEnd();
 540                         }
 541
 542                         $this->toc = Linker::tocList( $this->toc );
 543                 } else {
 544                         $this->toc = false;
 545                 }
 546
 547                 $context = new DerivativeContext( $this->getContext() );
 548                 $context->setTitle( $this->getTitle() ); // Remove subpage
 549                 $form = new EditWatchlistNormalHTMLForm( $fields, $context );
 550                 $form->setSubmitTextMsg( 'watchlistedit-normal-submit' );
 551                 # Used message keys: 'accesskey-watchlistedit-normal-submit', 'tooltip-watchlistedit-normal-submit'
 552                 $form->setSubmitTooltip( 'watchlistedit-normal-submit' );
 553                 $form->setWrapperLegendMsg( 'watchlistedit-normal-legend' );
 554                 $form->addHeaderText( $this->msg( 'watchlistedit-normal-explain' )->parse() );
 555                 $form->setSubmitCallback( array( $this, 'submitNormal' ) );
 556
 557                 return $form;
 558         }
 559
 560         /**
 561          * Build the label for a checkbox, with a link to the title, and various additional bits
 562          *
 563          * @param $title Title
 564          * @return string
 565          */
 566         private function buildRemoveLine( $title ) {
 567                 $link = Linker::link( $title );
 568
 569                 if ( $title->isRedirect() ) {
 570                         // Linker already makes class mw-redirect, so this is redundant
 571                         $link = '<span class="watchlistredir">' . $link . '</span>';
 572                 }
 573
 574                 $tools[] = Linker::link( $title->getTalkPage(), $this->msg( 'talkpagelinktext' )->escaped() );
 575
 576                 if ( $title->exists() ) {
 577                         $tools[] = Linker::linkKnown(
 578                                 $title,
 579                                 $this->msg( 'history_short' )->escaped(),
 580                                 array(),
 581                                 array( 'action' => 'history' )
 582                         );
 583                 }
 584
 585                 if ( $title->getNamespace() == NS_USER && !$title->isSubpage() ) {
 586                         $tools[] = Linker::linkKnown(
 587                                 SpecialPage::getTitleFor( 'Contributions', $title->getText() ),
 588                                 $this->msg( 'contributions' )->escaped()
 589                         );
 590                 }
 591
 592                 wfRunHooks( 'WatchlistEditorBuildRemoveLine', array( &$tools, $title, $title->isRedirect(), $this->getSkin() ) );
 593
 594                 return $link . " (" . $this->getLanguage()->pipeList( $tools ) . ")";
 595         }
 596
 597         /**
 598          * Get a form for editing the watchlist in "raw" mode
 599          *
 600          * @return HTMLForm
 601          */
 602         protected function getRawForm() {
 603                 $titles = implode( $this->getWatchlist(), "\n" );
 604                 $fields = array(
 605                         'Titles' => array(
 606                                 'type' => 'textarea',
 607                                 'label-message' => 'watchlistedit-raw-titles',
 608                                 'default' => $titles,
 609                         ),
 610                 );
 611                 $context = new DerivativeContext( $this->getContext() );
 612                 $context->setTitle( $this->getTitle( 'raw' ) ); // Reset subpage
 613                 $form = new HTMLForm( $fields, $context );
 614                 $form->setSubmitTextMsg( 'watchlistedit-raw-submit' );
 615                 # Used message keys: 'accesskey-watchlistedit-raw-submit', 'tooltip-watchlistedit-raw-submit'
 616                 $form->setSubmitTooltip( 'watchlistedit-raw-submit' );
 617                 $form->setWrapperLegendMsg( 'watchlistedit-raw-legend' );
 618                 $form->addHeaderText( $this->msg( 'watchlistedit-raw-explain' )->parse() );
 619                 $form->setSubmitCallback( array( $this, 'submitRaw' ) );
 620
 621                 return $form;
 622         }
 623
 624         /**
 625          * Determine whether we are editing the watchlist, and if so, what
 626          * kind of editing operation
 627          *
 628          * @param $request WebRequest
 629          * @param $par mixed
 630          * @return int
 631          */
 632         public static function getMode( $request, $par ) {
 633                 $mode = strtolower( $request->getVal( 'action', $par ) );
 634
 635                 switch ( $mode ) {
 636                         case 'clear':
 637                         case self::EDIT_CLEAR:
 638                         case 'raw':
 639                         case self::EDIT_RAW:
 640                                 return self::EDIT_RAW;
 641                         case 'edit':
 642                         case self::EDIT_NORMAL:
 643                                 return self::EDIT_NORMAL;
 644                         default:
 645                                 return false;
 646                 }
 647         }
 648
 649         /**
 650          * Build a set of links for convenient navigation
 651          * between watchlist viewing and editing modes
 652          *
 653          * @param $unused
 654          * @return string
 655          */
 656         public static function buildTools( $unused ) {
 657                 global $wgLang;
 658
 659                 $tools = array();
 660                 $modes = array(
 661                         'view' => array( 'Watchlist', false ),
 662                         'edit' => array( 'EditWatchlist', false ),
 663                         'raw' => array( 'EditWatchlist', 'raw' ),
 664                 );
 665
 666                 foreach ( $modes as $mode => $arr ) {
 667                         // can use messages 'watchlisttools-view', 'watchlisttools-edit', 'watchlisttools-raw'
 668                         $tools[] = Linker::linkKnown(
 669                                 SpecialPage::getTitleFor( $arr[0], $arr[1] ),
 670                                 wfMessage( "watchlisttools-{$mode}" )->escaped()
 671                         );
 672                 }
 673
 674                 return Html::rawElement(
 675                         'span',
 676                         array( 'class' => 'mw-watchlist-toollinks' ),
 677                         wfMessage( 'parentheses', $wgLang->pipeList( $tools ) )->text()
 678                 );
 679         }
 680 }
 681
 682 # B/C since 1.18
 683 class WatchlistEditor extends SpecialEditWatchlist {
 684 }
 685
 686 /**
 687  * Extend HTMLForm purely so we can have a more sane way of getting the section headers
 688  */
 689 class EditWatchlistNormalHTMLForm extends HTMLForm {
 690         public function getLegend( $namespace ) {
 691                 $namespace = substr( $namespace, 2 );
 692
 693                 return $namespace == NS_MAIN
 694                         ? $this->msg( 'blanknamespace' )->escaped()
 695                         : htmlspecialchars( $this->getContext()->getLanguage()->getFormattedNsText( $namespace ) );
 696         }
 697
 698         public function getBody() {
 699                 return $this->displaySection( $this->mFieldTree, '', 'editwatchlist-' );
 700         }
 701 }
 702
 703 class EditWatchlistCheckboxSeriesField extends HTMLMultiSelectField {
 704         /**
 705          * HTMLMultiSelectField throws validation errors if we get input data
 706          * that doesn't match the data set in the form setup. This causes
 707          * problems if something gets removed from the watchlist while the
 708          * form is open (bug 32126), but we know that invalid items will
 709          * be harmless so we can override it here.
 710          *
 711          * @param string $value the value the field was submitted with
 712          * @param array $alldata the data collected from the form
 713          * @return Mixed Bool true on success, or String error to display.
 714          */
 715         function validate( $value, $alldata ) {
 716                 // Need to call into grandparent to be a good citizen. :)
 717                 return HTMLFormField::validate( $value, $alldata );
 718         }
 719 }