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 int $mode
  60          */
  61         public function execute( $mode ) {
  62                 $this->setHeaders();
  63
  64                 # Anons don't get a watchlist
  65                 $this->requireLogin( 'watchlistanontext' );
  66
  67                 $out = $this->getOutput();
  68
  69                 $this->checkPermissions();
  70                 $this->checkReadOnly();
  71
  72                 $this->outputHeader();
  73                 $this->outputSubtitle();
  74                 $out->addModuleStyles( 'mediawiki.special' );
  75
  76                 # B/C: $mode used to be waaay down the parameter list, and the first parameter
  77                 # was $wgUser
  78                 if ( $mode instanceof User ) {
  79                         $args = func_get_args();
  80                         if ( count( $args ) >= 4 ) {
  81                                 $mode = $args[3];
  82                         }
  83                 }
  84                 $mode = self::getMode( $this->getRequest(), $mode );
  85
  86                 switch ( $mode ) {
  87                         case self::EDIT_RAW:
  88                                 $out->setPageTitle( $this->msg( 'watchlistedit-raw-title' ) );
  89                                 $form = $this->getRawForm();
  90                                 if ( $form->show() ) {
  91                                         $out->addHTML( $this->successMessage );
  92                                         $out->addReturnTo( SpecialPage::getTitleFor( 'Watchlist' ) );
  93                                 }
  94                                 break;
  95                         case self::EDIT_CLEAR:
  96                                 $out->setPageTitle( $this->msg( 'watchlistedit-clear-title' ) );
  97                                 $form = $this->getClearForm();
  98                                 if ( $form->show() ) {
  99                                         $out->addHTML( $this->successMessage );
 100                                         $out->addReturnTo( SpecialPage::getTitleFor( 'Watchlist' ) );
 101                                 }
 102                                 break;
 103
 104                         case self::EDIT_NORMAL:
 105                         default:
 106                                 $this->executeViewEditWatchlist();
 107                                 break;
 108                 }
 109         }
 110
 111         /**
 112          * Renders a subheader on the watchlist page.
 113          */
 114         protected function outputSubtitle() {
 115                 $out = $this->getOutput();
 116                 $out->addSubtitle( $this->msg( 'watchlistfor2', $this->getUser()->getName() )
 117                         ->rawParams( SpecialEditWatchlist::buildTools( null ) ) );
 118         }
 119
 120         /**
 121          * Executes an edit mode for the watchlist view, from which you can manage your watchlist
 122          *
 123          */
 124         protected function executeViewEditWatchlist() {
 125                 $out = $this->getOutput();
 126                 $out->setPageTitle( $this->msg( 'watchlistedit-normal-title' ) );
 127                 $form = $this->getNormalForm();
 128                 if ( $form->show() ) {
 129                         $out->addHTML( $this->successMessage );
 130                         $out->addReturnTo( SpecialPage::getTitleFor( 'Watchlist' ) );
 131                 } elseif ( $this->toc !== false ) {
 132                         $out->prependHTML( $this->toc );
 133                         $out->addModules( 'mediawiki.toc' );
 134                 }
 135         }
 136
 137         /**
 138          * Return an array of subpages that this special page will accept.
 139          *
 140          * @see also SpecialWatchlist::getSubpagesForPrefixSearch
 141          * @return string[] subpages
 142          */
 143         public function getSubpagesForPrefixSearch() {
 144                 // SpecialWatchlist uses SpecialEditWatchlist::getMode, so new types should be added
 145                 // here and there - no 'edit' here, because that the default for this page
 146                 return array(
 147                         'clear',
 148                         'raw',
 149                 );
 150         }
 151
 152         /**
 153          * Extract a list of titles from a blob of text, returning
 154          * (prefixed) strings; unwatchable titles are ignored
 155          *
 156          * @param string $list
 157          * @return array
 158          */
 159         private function extractTitles( $list ) {
 160                 $list = explode( "\n", trim( $list ) );
 161                 if ( !is_array( $list ) ) {
 162                         return array();
 163                 }
 164
 165                 $titles = array();
 166
 167                 foreach ( $list as $text ) {
 168                         $text = trim( $text );
 169                         if ( strlen( $text ) > 0 ) {
 170                                 $title = Title::newFromText( $text );
 171                                 if ( $title instanceof Title && $title->isWatchable() ) {
 172                                         $titles[] = $title;
 173                                 }
 174                         }
 175                 }
 176
 177                 GenderCache::singleton()->doTitlesArray( $titles );
 178
 179                 $list = array();
 180                 /** @var Title $title */
 181                 foreach ( $titles as $title ) {
 182                         $list[] = $title->getPrefixedText();
 183                 }
 184
 185                 return array_unique( $list );
 186         }
 187
 188         public function submitRaw( $data ) {
 189                 $wanted = $this->extractTitles( $data['Titles'] );
 190                 $current = $this->getWatchlist();
 191
 192                 if ( count( $wanted ) > 0 ) {
 193                         $toWatch = array_diff( $wanted, $current );
 194                         $toUnwatch = array_diff( $current, $wanted );
 195                         $this->watchTitles( $toWatch );
 196                         $this->unwatchTitles( $toUnwatch );
 197                         $this->getUser()->invalidateCache();
 198
 199                         if ( count( $toWatch ) > 0 || count( $toUnwatch ) > 0 ) {
 200                                 $this->successMessage = $this->msg( 'watchlistedit-raw-done' )->parse();
 201                         } else {
 202                                 return false;
 203                         }
 204
 205                         if ( count( $toWatch ) > 0 ) {
 206                                 $this->successMessage .= ' ' . $this->msg( 'watchlistedit-raw-added' )
 207                                         ->numParams( count( $toWatch ) )->parse();
 208                                 $this->showTitles( $toWatch, $this->successMessage );
 209                         }
 210
 211                         if ( count( $toUnwatch ) > 0 ) {
 212                                 $this->successMessage .= ' ' . $this->msg( 'watchlistedit-raw-removed' )
 213                                         ->numParams( count( $toUnwatch ) )->parse();
 214                                 $this->showTitles( $toUnwatch, $this->successMessage );
 215                         }
 216                 } else {
 217                         $this->clearWatchlist();
 218                         $this->getUser()->invalidateCache();
 219
 220                         if ( count( $current ) > 0 ) {
 221                                 $this->successMessage = $this->msg( 'watchlistedit-raw-done' )->parse();
 222                         } else {
 223                                 return false;
 224                         }
 225
 226                         $this->successMessage .= ' ' . $this->msg( 'watchlistedit-raw-removed' )
 227                                 ->numParams( count( $current ) )->parse();
 228                         $this->showTitles( $current, $this->successMessage );
 229                 }
 230
 231                 return true;
 232         }
 233
 234         public function submitClear( $data ) {
 235                 $current = $this->getWatchlist();
 236                 $this->clearWatchlist();
 237                 $this->getUser()->invalidateCache();
 238                 $this->successMessage = $this->msg( 'watchlistedit-clear-done' )->parse();
 239                 $this->successMessage .= ' ' . $this->msg( 'watchlistedit-clear-removed' )
 240                         ->numParams( count( $current ) )->parse();
 241                 $this->showTitles( $current, $this->successMessage );
 242
 243                 return true;
 244         }
 245
 246         /**
 247          * Print out a list of linked titles
 248          *
 249          * $titles can be an array of strings or Title objects; the former
 250          * is preferred, since Titles are very memory-heavy
 251          *
 252          * @param array $titles Array of strings, or Title objects
 253          * @param string $output
 254          */
 255         private function showTitles( $titles, &$output ) {
 256                 $talk = $this->msg( 'talkpagelinktext' )->escaped();
 257                 // Do a batch existence check
 258                 $batch = new LinkBatch();
 259                 if ( count( $titles ) >= 100 ) {
 260                         $output = $this->msg( 'watchlistedit-too-many' )->parse();
 261                         return;
 262                 }
 263                 foreach ( $titles as $title ) {
 264                         if ( !$title instanceof Title ) {
 265                                 $title = Title::newFromText( $title );
 266                         }
 267
 268                         if ( $title instanceof Title ) {
 269                                 $batch->addObj( $title );
 270                                 $batch->addObj( $title->getTalkPage() );
 271                         }
 272                 }
 273
 274                 $batch->execute();
 275
 276                 // Print out the list
 277                 $output .= "<ul>\n";
 278
 279                 foreach ( $titles as $title ) {
 280                         if ( !$title instanceof Title ) {
 281                                 $title = Title::newFromText( $title );
 282                         }
 283
 284                         if ( $title instanceof Title ) {
 285                                 $output .= "<li>"
 286                                         . Linker::link( $title )
 287                                         . ' (' . Linker::link( $title->getTalkPage(), $talk )
 288                                         . ")</li>\n";
 289                         }
 290                 }
 291
 292                 $output .= "</ul>\n";
 293         }
 294
 295         /**
 296          * Prepare a list of titles on a user's watchlist (excluding talk pages)
 297          * and return an array of (prefixed) strings
 298          *
 299          * @return array
 300          */
 301         private function getWatchlist() {
 302                 $list = array();
 303
 304                 $index = $this->getRequest()->wasPosted() ? DB_MASTER : DB_SLAVE;
 305                 $dbr = wfGetDB( $index );
 306
 307                 $res = $dbr->select(
 308                         'watchlist',
 309                         array(
 310                                 'wl_namespace', 'wl_title'
 311                         ), array(
 312                                 'wl_user' => $this->getUser()->getId(),
 313                         ),
 314                         __METHOD__
 315                 );
 316
 317                 if ( $res->numRows() > 0 ) {
 318                         /** @var Title[] $titles */
 319                         $titles = array();
 320                         foreach ( $res as $row ) {
 321                                 $title = Title::makeTitleSafe( $row->wl_namespace, $row->wl_title );
 322
 323                                 if ( $this->checkTitle( $title, $row->wl_namespace, $row->wl_title )
 324                                         && !$title->isTalkPage()
 325                                 ) {
 326                                         $titles[] = $title;
 327                                 }
 328                         }
 329                         $res->free();
 330
 331                         GenderCache::singleton()->doTitlesArray( $titles );
 332
 333                         foreach ( $titles as $title ) {
 334                                 $list[] = $title->getPrefixedText();
 335                         }
 336                 }
 337
 338                 $this->cleanupWatchlist();
 339
 340                 return $list;
 341         }
 342
 343         /**
 344          * Get a list of titles on a user's watchlist, excluding talk pages,
 345          * and return as a two-dimensional array with namespace and title.
 346          *
 347          * @return array
 348          */
 349         protected function getWatchlistInfo() {
 350                 $titles = array();
 351                 $dbr = wfGetDB( DB_SLAVE );
 352
 353                 $res = $dbr->select(
 354                         array( 'watchlist' ),
 355                         array( 'wl_namespace', 'wl_title' ),
 356                         array( 'wl_user' => $this->getUser()->getId() ),
 357                         __METHOD__,
 358                         array( 'ORDER BY' => array( 'wl_namespace', 'wl_title' ) )
 359                 );
 360
 361                 $lb = new LinkBatch();
 362
 363                 foreach ( $res as $row ) {
 364                         $lb->add( $row->wl_namespace, $row->wl_title );
 365                         if ( !MWNamespace::isTalk( $row->wl_namespace ) ) {
 366                                 $titles[$row->wl_namespace][$row->wl_title] = 1;
 367                         }
 368                 }
 369
 370                 $lb->execute();
 371
 372                 return $titles;
 373         }
 374
 375         /**
 376          * Validates watchlist entry
 377          *
 378          * @param Title $title
 379          * @param int $namespace
 380          * @param string $dbKey
 381          * @return bool Whether this item is valid
 382          */
 383         private function checkTitle( $title, $namespace, $dbKey ) {
 384                 if ( $title
 385                         && ( $title->isExternal()
 386                                 || $title->getNamespace() < 0
 387                         )
 388                 ) {
 389                         $title = false; // unrecoverable
 390                 }
 391
 392                 if ( !$title
 393                         || $title->getNamespace() != $namespace
 394                         || $title->getDBkey() != $dbKey
 395                 ) {
 396                         $this->badItems[] = array( $title, $namespace, $dbKey );
 397                 }
 398
 399                 return (bool)$title;
 400         }
 401
 402         /**
 403          * Attempts to clean up broken items
 404          */
 405         private function cleanupWatchlist() {
 406                 if ( !count( $this->badItems ) ) {
 407                         return; // nothing to do
 408                 }
 409
 410                 $dbw = wfGetDB( DB_MASTER );
 411                 $user = $this->getUser();
 412
 413                 foreach ( $this->badItems as $row ) {
 414                         list( $title, $namespace, $dbKey ) = $row;
 415                         $action = $title ? 'cleaning up' : 'deleting';
 416                         wfDebug( "User {$user->getName()} has broken watchlist item ns($namespace):$dbKey, $action.\n" );
 417
 418                         $dbw->delete( 'watchlist',
 419                                 array(
 420                                         'wl_user' => $user->getId(),
 421                                         'wl_namespace' => $namespace,
 422                                         'wl_title' => $dbKey,
 423                                 ),
 424                                 __METHOD__
 425                         );
 426
 427                         // Can't just do an UPDATE instead of DELETE/INSERT due to unique index
 428                         if ( $title ) {
 429                                 $user->addWatch( $title );
 430                         }
 431                 }
 432         }
 433
 434         /**
 435          * Remove all titles from a user's watchlist
 436          */
 437         private function clearWatchlist() {
 438                 $dbw = wfGetDB( DB_MASTER );
 439                 $dbw->delete(
 440                         'watchlist',
 441                         array( 'wl_user' => $this->getUser()->getId() ),
 442                         __METHOD__
 443                 );
 444         }
 445
 446         /**
 447          * Add a list of titles to a user's watchlist
 448          *
 449          * $titles can be an array of strings or Title objects; the former
 450          * is preferred, since Titles are very memory-heavy
 451          *
 452          * @param array $titles Array of strings, or Title objects
 453          */
 454         private function watchTitles( $titles ) {
 455                 $dbw = wfGetDB( DB_MASTER );
 456                 $rows = array();
 457
 458                 foreach ( $titles as $title ) {
 459                         if ( !$title instanceof Title ) {
 460                                 $title = Title::newFromText( $title );
 461                         }
 462
 463                         if ( $title instanceof Title ) {
 464                                 $rows[] = array(
 465                                         'wl_user' => $this->getUser()->getId(),
 466                                         'wl_namespace' => MWNamespace::getSubject( $title->getNamespace() ),
 467                                         'wl_title' => $title->getDBkey(),
 468                                         'wl_notificationtimestamp' => null,
 469                                 );
 470                                 $rows[] = array(
 471                                         'wl_user' => $this->getUser()->getId(),
 472                                         'wl_namespace' => MWNamespace::getTalk( $title->getNamespace() ),
 473                                         'wl_title' => $title->getDBkey(),
 474                                         'wl_notificationtimestamp' => null,
 475                                 );
 476                         }
 477                 }
 478
 479                 $dbw->insert( 'watchlist', $rows, __METHOD__, 'IGNORE' );
 480         }
 481
 482         /**
 483          * Remove a list of titles from a user's watchlist
 484          *
 485          * $titles can be an array of strings or Title objects; the former
 486          * is preferred, since Titles are very memory-heavy
 487          *
 488          * @param array $titles Array of strings, or Title objects
 489          */
 490         private function unwatchTitles( $titles ) {
 491                 $dbw = wfGetDB( DB_MASTER );
 492
 493                 foreach ( $titles as $title ) {
 494                         if ( !$title instanceof Title ) {
 495                                 $title = Title::newFromText( $title );
 496                         }
 497
 498                         if ( $title instanceof Title ) {
 499                                 $dbw->delete(
 500                                         'watchlist',
 501                                         array(
 502                                                 'wl_user' => $this->getUser()->getId(),
 503                                                 'wl_namespace' => MWNamespace::getSubject( $title->getNamespace() ),
 504                                                 'wl_title' => $title->getDBkey(),
 505                                         ),
 506                                         __METHOD__
 507                                 );
 508
 509                                 $dbw->delete(
 510                                         'watchlist',
 511                                         array(
 512                                                 'wl_user' => $this->getUser()->getId(),
 513                                                 'wl_namespace' => MWNamespace::getTalk( $title->getNamespace() ),
 514                                                 'wl_title' => $title->getDBkey(),
 515                                         ),
 516                                         __METHOD__
 517                                 );
 518
 519                                 $page = WikiPage::factory( $title );
 520                                 Hooks::run( 'UnwatchArticleComplete', array( $this->getUser(), &$page ) );
 521                         }
 522                 }
 523         }
 524
 525         public function submitNormal( $data ) {
 526                 $removed = array();
 527
 528                 foreach ( $data as $titles ) {
 529                         $this->unwatchTitles( $titles );
 530                         $removed = array_merge( $removed, $titles );
 531                 }
 532
 533                 if ( count( $removed ) > 0 ) {
 534                         $this->successMessage = $this->msg( 'watchlistedit-normal-done'
 535                         )->numParams( count( $removed ) )->parse();
 536                         $this->showTitles( $removed, $this->successMessage );
 537
 538                         return true;
 539                 } else {
 540                         return false;
 541                 }
 542         }
 543
 544         /**
 545          * Get the standard watchlist editing form
 546          *
 547          * @return HTMLForm
 548          */
 549         protected function getNormalForm() {
 550                 global $wgContLang;
 551
 552                 $fields = array();
 553                 $count = 0;
 554
 555                 // Allow subscribers to manipulate the list of watched pages (or use it
 556                 // to preload lots of details at once)
 557                 $watchlistInfo = $this->getWatchlistInfo();
 558                 Hooks::run(
 559                         'WatchlistEditorBeforeFormRender',
 560                         array( &$watchlistInfo )
 561                 );
 562
 563                 foreach ( $watchlistInfo as $namespace => $pages ) {
 564                         $options = array();
 565
 566                         foreach ( array_keys( $pages ) as $dbkey ) {
 567                                 $title = Title::makeTitleSafe( $namespace, $dbkey );
 568
 569                                 if ( $this->checkTitle( $title, $namespace, $dbkey ) ) {
 570                                         $text = $this->buildRemoveLine( $title );
 571                                         $options[$text] = $title->getPrefixedText();
 572                                         $count++;
 573                                 }
 574                         }
 575
 576                         // checkTitle can filter some options out, avoid empty sections
 577                         if ( count( $options ) > 0 ) {
 578                                 $fields['TitlesNs' . $namespace] = array(
 579                                         'class' => 'EditWatchlistCheckboxSeriesField',
 580                                         'options' => $options,
 581                                         'section' => "ns$namespace",
 582                                 );
 583                         }
 584                 }
 585                 $this->cleanupWatchlist();
 586
 587                 if ( count( $fields ) > 1 && $count > 30 ) {
 588                         $this->toc = Linker::tocIndent();
 589                         $tocLength = 0;
 590
 591                         foreach ( $fields as $data ) {
 592                                 # strip out the 'ns' prefix from the section name:
 593                                 $ns = substr( $data['section'], 2 );
 594
 595                                 $nsText = ( $ns == NS_MAIN )
 596                                         ? $this->msg( 'blanknamespace' )->escaped()
 597                                         : htmlspecialchars( $wgContLang->getFormattedNsText( $ns ) );
 598                                 $this->toc .= Linker::tocLine( "editwatchlist-{$data['section']}", $nsText,
 599                                         $this->getLanguage()->formatNum( ++$tocLength ), 1 ) . Linker::tocLineEnd();
 600                         }
 601
 602                         $this->toc = Linker::tocList( $this->toc );
 603                 } else {
 604                         $this->toc = false;
 605                 }
 606
 607                 $context = new DerivativeContext( $this->getContext() );
 608                 $context->setTitle( $this->getPageTitle() ); // Remove subpage
 609                 $form = new EditWatchlistNormalHTMLForm( $fields, $context );
 610                 $form->setSubmitTextMsg( 'watchlistedit-normal-submit' );
 611                 $form->setSubmitDestructive();
 612                 # Used message keys:
 613                 # 'accesskey-watchlistedit-normal-submit', 'tooltip-watchlistedit-normal-submit'
 614                 $form->setSubmitTooltip( 'watchlistedit-normal-submit' );
 615                 $form->setWrapperLegendMsg( 'watchlistedit-normal-legend' );
 616                 $form->addHeaderText( $this->msg( 'watchlistedit-normal-explain' )->parse() );
 617                 $form->setSubmitCallback( array( $this, 'submitNormal' ) );
 618
 619                 return $form;
 620         }
 621
 622         /**
 623          * Build the label for a checkbox, with a link to the title, and various additional bits
 624          *
 625          * @param Title $title
 626          * @return string
 627          */
 628         private function buildRemoveLine( $title ) {
 629                 $link = Linker::link( $title );
 630
 631                 $tools['talk'] = Linker::link(
 632                         $title->getTalkPage(),
 633                         $this->msg( 'talkpagelinktext' )->escaped()
 634                 );
 635
 636                 if ( $title->exists() ) {
 637                         $tools['history'] = Linker::linkKnown(
 638                                 $title,
 639                                 $this->msg( 'history_short' )->escaped(),
 640                                 array(),
 641                                 array( 'action' => 'history' )
 642                         );
 643                 }
 644
 645                 if ( $title->getNamespace() == NS_USER && !$title->isSubpage() ) {
 646                         $tools['contributions'] = Linker::linkKnown(
 647                                 SpecialPage::getTitleFor( 'Contributions', $title->getText() ),
 648                                 $this->msg( 'contributions' )->escaped()
 649                         );
 650                 }
 651
 652                 Hooks::run(
 653                         'WatchlistEditorBuildRemoveLine',
 654                         array( &$tools, $title, $title->isRedirect(), $this->getSkin(), &$link )
 655                 );
 656
 657                 if ( $title->isRedirect() ) {
 658                         // Linker already makes class mw-redirect, so this is redundant
 659                         $link = '<span class="watchlistredir">' . $link . '</span>';
 660                 }
 661
 662                 return $link . " (" . $this->getLanguage()->pipeList( $tools ) . ")";
 663         }
 664
 665         /**
 666          * Get a form for editing the watchlist in "raw" mode
 667          *
 668          * @return HTMLForm
 669          */
 670         protected function getRawForm() {
 671                 $titles = implode( $this->getWatchlist(), "\n" );
 672                 $fields = array(
 673                         'Titles' => array(
 674                                 'type' => 'textarea',
 675                                 'label-message' => 'watchlistedit-raw-titles',
 676                                 'default' => $titles,
 677                         ),
 678                 );
 679                 $context = new DerivativeContext( $this->getContext() );
 680                 $context->setTitle( $this->getPageTitle( 'raw' ) ); // Reset subpage
 681                 $form = new HTMLForm( $fields, $context );
 682                 $form->setSubmitTextMsg( 'watchlistedit-raw-submit' );
 683                 # Used message keys: 'accesskey-watchlistedit-raw-submit', 'tooltip-watchlistedit-raw-submit'
 684                 $form->setSubmitTooltip( 'watchlistedit-raw-submit' );
 685                 $form->setWrapperLegendMsg( 'watchlistedit-raw-legend' );
 686                 $form->addHeaderText( $this->msg( 'watchlistedit-raw-explain' )->parse() );
 687                 $form->setSubmitCallback( array( $this, 'submitRaw' ) );
 688
 689                 return $form;
 690         }
 691
 692         /**
 693          * Get a form for clearing the watchlist
 694          *
 695          * @return HTMLForm
 696          */
 697         protected function getClearForm() {
 698                 $context = new DerivativeContext( $this->getContext() );
 699                 $context->setTitle( $this->getPageTitle( 'clear' ) ); // Reset subpage
 700                 $form = new HTMLForm( array(), $context );
 701                 $form->setSubmitTextMsg( 'watchlistedit-clear-submit' );
 702                 # Used message keys: 'accesskey-watchlistedit-clear-submit', 'tooltip-watchlistedit-clear-submit'
 703                 $form->setSubmitTooltip( 'watchlistedit-clear-submit' );
 704                 $form->setWrapperLegendMsg( 'watchlistedit-clear-legend' );
 705                 $form->addHeaderText( $this->msg( 'watchlistedit-clear-explain' )->parse() );
 706                 $form->setSubmitCallback( array( $this, 'submitClear' ) );
 707                 $form->setSubmitDestructive();
 708
 709                 return $form;
 710         }
 711
 712         /**
 713          * Determine whether we are editing the watchlist, and if so, what
 714          * kind of editing operation
 715          *
 716          * @param WebRequest $request
 717          * @param string $par
 718          * @return int
 719          */
 720         public static function getMode( $request, $par ) {
 721                 $mode = strtolower( $request->getVal( 'action', $par ) );
 722
 723                 switch ( $mode ) {
 724                         case 'clear':
 725                         case self::EDIT_CLEAR:
 726                                 return self::EDIT_CLEAR;
 727                         case 'raw':
 728                         case self::EDIT_RAW:
 729                                 return self::EDIT_RAW;
 730                         case 'edit':
 731                         case self::EDIT_NORMAL:
 732                                 return self::EDIT_NORMAL;
 733                         default:
 734                                 return false;
 735                 }
 736         }
 737
 738         /**
 739          * Build a set of links for convenient navigation
 740          * between watchlist viewing and editing modes
 741          *
 742          * @param null $unused
 743          * @return string
 744          */
 745         public static function buildTools( $unused ) {
 746                 global $wgLang;
 747
 748                 $tools = array();
 749                 $modes = array(
 750                         'view' => array( 'Watchlist', false ),
 751                         'edit' => array( 'EditWatchlist', false ),
 752                         'raw' => array( 'EditWatchlist', 'raw' ),
 753                         'clear' => array( 'EditWatchlist', 'clear' ),
 754                 );
 755
 756                 foreach ( $modes as $mode => $arr ) {
 757                         // can use messages 'watchlisttools-view', 'watchlisttools-edit', 'watchlisttools-raw'
 758                         $tools[] = Linker::linkKnown(
 759                                 SpecialPage::getTitleFor( $arr[0], $arr[1] ),
 760                                 wfMessage( "watchlisttools-{$mode}" )->escaped()
 761                         );
 762                 }
 763
 764                 return Html::rawElement(
 765                         'span',
 766                         array( 'class' => 'mw-watchlist-toollinks' ),
 767                         wfMessage( 'parentheses' )->rawParams( $wgLang->pipeList( $tools ) )->escaped()
 768                 );
 769         }
 770 }
 771
 772 /**
 773  * Extend HTMLForm purely so we can have a more sane way of getting the section headers
 774  */
 775 class EditWatchlistNormalHTMLForm extends HTMLForm {
 776         public function getLegend( $namespace ) {
 777                 $namespace = substr( $namespace, 2 );
 778
 779                 return $namespace == NS_MAIN
 780                         ? $this->msg( 'blanknamespace' )->escaped()
 781                         : htmlspecialchars( $this->getContext()->getLanguage()->getFormattedNsText( $namespace ) );
 782         }
 783
 784         public function getBody() {
 785                 return $this->displaySection( $this->mFieldTree, '', 'editwatchlist-' );
 786         }
 787 }
 788
 789 class EditWatchlistCheckboxSeriesField extends HTMLMultiSelectField {
 790         /**
 791          * HTMLMultiSelectField throws validation errors if we get input data
 792          * that doesn't match the data set in the form setup. This causes
 793          * problems if something gets removed from the watchlist while the
 794          * form is open (bug 32126), but we know that invalid items will
 795          * be harmless so we can override it here.
 796          *
 797          * @param string $value The value the field was submitted with
 798          * @param array $alldata The data collected from the form
 799          * @return bool|string Bool true on success, or String error to display.
 800          */
 801         function validate( $value, $alldata ) {
 802                 // Need to call into grandparent to be a good citizen. :)
 803                 return HTMLFormField::validate( $value, $alldata );
 804         }
 805 }