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