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 use MediaWiki\Linker\LinkRenderer;
  30 use MediaWiki\Linker\LinkTarget;
  31 use MediaWiki\MediaWikiServices;
  32
  33 /**
  34  * Provides the UI through which users can perform editing
  35  * operations on their watchlist
  36  *
  37  * @ingroup SpecialPage
  38  * @ingroup Watchlist
  39  * @author Rob Church <robchur@gmail.com>
  40  */
  41 class SpecialEditWatchlist extends UnlistedSpecialPage {
  42         /**
  43          * Editing modes. EDIT_CLEAR is no longer used; the "Clear" link scared people
  44          * too much. Now it's passed on to the raw editor, from which it's very easy to clear.
  45          */
  46         const EDIT_CLEAR = 1;
  47         const EDIT_RAW = 2;
  48         const EDIT_NORMAL = 3;
  49
  50         protected $successMessage;
  51
  52         protected $toc;
  53
  54         private $badItems = [];
  55
  56         /**
  57          * @var TitleParser
  58          */
  59         private $titleParser;
  60
  61         public function __construct() {
  62                 parent::__construct( 'EditWatchlist', 'editmywatchlist' );
  63         }
  64
  65         /**
  66          * Initialize any services we'll need (unless it has already been provided via a setter).
  67          * This allows for dependency injection even though we don't control object creation.
  68          */
  69         private function initServices() {
  70                 if ( !$this->titleParser ) {
  71                         $this->titleParser = MediaWikiServices::getInstance()->getTitleParser();
  72                 }
  73         }
  74
  75         public function doesWrites() {
  76                 return true;
  77         }
  78
  79         /**
  80          * Main execution point
  81          *
  82          * @param int $mode
  83          */
  84         public function execute( $mode ) {
  85                 $this->initServices();
  86                 $this->setHeaders();
  87
  88                 # Anons don't get a watchlist
  89                 $this->requireLogin( 'watchlistanontext' );
  90
  91                 $out = $this->getOutput();
  92
  93                 $this->checkPermissions();
  94                 $this->checkReadOnly();
  95
  96                 $this->outputHeader();
  97                 $this->outputSubtitle();
  98                 $out->addModuleStyles( 'mediawiki.special' );
  99
 100                 # B/C: $mode used to be waaay down the parameter list, and the first parameter
 101                 # was $wgUser
 102                 if ( $mode instanceof User ) {
 103                         $args = func_get_args();
 104                         if ( count( $args ) >= 4 ) {
 105                                 $mode = $args[3];
 106                         }
 107                 }
 108                 $mode = self::getMode( $this->getRequest(), $mode );
 109
 110                 switch ( $mode ) {
 111                         case self::EDIT_RAW:
 112                                 $out->setPageTitle( $this->msg( 'watchlistedit-raw-title' ) );
 113                                 $form = $this->getRawForm();
 114                                 if ( $form->show() ) {
 115                                         $out->addHTML( $this->successMessage );
 116                                         $out->addReturnTo( SpecialPage::getTitleFor( 'Watchlist' ) );
 117                                 }
 118                                 break;
 119                         case self::EDIT_CLEAR:
 120                                 $out->setPageTitle( $this->msg( 'watchlistedit-clear-title' ) );
 121                                 $form = $this->getClearForm();
 122                                 if ( $form->show() ) {
 123                                         $out->addHTML( $this->successMessage );
 124                                         $out->addReturnTo( SpecialPage::getTitleFor( 'Watchlist' ) );
 125                                 }
 126                                 break;
 127
 128                         case self::EDIT_NORMAL:
 129                         default:
 130                                 $this->executeViewEditWatchlist();
 131                                 break;
 132                 }
 133         }
 134
 135         /**
 136          * Renders a subheader on the watchlist page.
 137          */
 138         protected function outputSubtitle() {
 139                 $out = $this->getOutput();
 140                 $out->addSubtitle( $this->msg( 'watchlistfor2', $this->getUser()->getName() )
 141                         ->rawParams(
 142                                 self::buildTools(
 143                                         $this->getLanguage(),
 144                                         $this->getLinkRenderer()
 145                                 )
 146                         )
 147                 );
 148         }
 149
 150         /**
 151          * Executes an edit mode for the watchlist view, from which you can manage your watchlist
 152          */
 153         protected function executeViewEditWatchlist() {
 154                 $out = $this->getOutput();
 155                 $out->setPageTitle( $this->msg( 'watchlistedit-normal-title' ) );
 156                 $form = $this->getNormalForm();
 157                 if ( $form->show() ) {
 158                         $out->addHTML( $this->successMessage );
 159                         $out->addReturnTo( SpecialPage::getTitleFor( 'Watchlist' ) );
 160                 } elseif ( $this->toc !== false ) {
 161                         $out->prependHTML( $this->toc );
 162                         $out->addModules( 'mediawiki.toc' );
 163                         $out->addModuleStyles( 'mediawiki.toc.styles' );
 164                 }
 165         }
 166
 167         /**
 168          * Return an array of subpages that this special page will accept.
 169          *
 170          * @see also SpecialWatchlist::getSubpagesForPrefixSearch
 171          * @return string[] subpages
 172          */
 173         public function getSubpagesForPrefixSearch() {
 174                 // SpecialWatchlist uses SpecialEditWatchlist::getMode, so new types should be added
 175                 // here and there - no 'edit' here, because that the default for this page
 176                 return [
 177                         'clear',
 178                         'raw',
 179                 ];
 180         }
 181
 182         /**
 183          * Extract a list of titles from a blob of text, returning
 184          * (prefixed) strings; unwatchable titles are ignored
 185          *
 186          * @param string $list
 187          * @return array
 188          */
 189         private function extractTitles( $list ) {
 190                 $list = explode( "\n", trim( $list ) );
 191                 if ( !is_array( $list ) ) {
 192                         return [];
 193                 }
 194
 195                 $titles = [];
 196
 197                 foreach ( $list as $text ) {
 198                         $text = trim( $text );
 199                         if ( strlen( $text ) > 0 ) {
 200                                 $title = Title::newFromText( $text );
 201                                 if ( $title instanceof Title && $title->isWatchable() ) {
 202                                         $titles[] = $title;
 203                                 }
 204                         }
 205                 }
 206
 207                 MediaWikiServices::getInstance()->getGenderCache()->doTitlesArray( $titles );
 208
 209                 $list = [];
 210                 /** @var Title $title */
 211                 foreach ( $titles as $title ) {
 212                         $list[] = $title->getPrefixedText();
 213                 }
 214
 215                 return array_unique( $list );
 216         }
 217
 218         public function submitRaw( $data ) {
 219                 $wanted = $this->extractTitles( $data['Titles'] );
 220                 $current = $this->getWatchlist();
 221
 222                 if ( count( $wanted ) > 0 ) {
 223                         $toWatch = array_diff( $wanted, $current );
 224                         $toUnwatch = array_diff( $current, $wanted );
 225                         $this->watchTitles( $toWatch );
 226                         $this->unwatchTitles( $toUnwatch );
 227                         $this->getUser()->invalidateCache();
 228
 229                         if ( count( $toWatch ) > 0 || count( $toUnwatch ) > 0 ) {
 230                                 $this->successMessage = $this->msg( 'watchlistedit-raw-done' )->parse();
 231                         } else {
 232                                 return false;
 233                         }
 234
 235                         if ( count( $toWatch ) > 0 ) {
 236                                 $this->successMessage .= ' ' . $this->msg( 'watchlistedit-raw-added' )
 237                                         ->numParams( count( $toWatch ) )->parse();
 238                                 $this->showTitles( $toWatch, $this->successMessage );
 239                         }
 240
 241                         if ( count( $toUnwatch ) > 0 ) {
 242                                 $this->successMessage .= ' ' . $this->msg( 'watchlistedit-raw-removed' )
 243                                         ->numParams( count( $toUnwatch ) )->parse();
 244                                 $this->showTitles( $toUnwatch, $this->successMessage );
 245                         }
 246                 } else {
 247
 248                         if ( count( $current ) === 0 ) {
 249                                 return false;
 250                         }
 251
 252                         $this->clearUserWatchedItems( $current, 'raw' );
 253                         $this->showTitles( $current, $this->successMessage );
 254                 }
 255
 256                 return true;
 257         }
 258
 259         public function submitClear( $data ) {
 260                 $current = $this->getWatchlist();
 261                 $this->clearUserWatchedItems( $current, 'clear' );
 262                 $this->showTitles( $current, $this->successMessage );
 263                 return true;
 264         }
 265
 266         /**
 267          * @param array $current
 268          * @param string $messageFor 'raw' or 'clear'
 269          */
 270         private function clearUserWatchedItems( $current, $messageFor ) {
 271                 $watchedItemStore = MediaWikiServices::getInstance()->getWatchedItemStore();
 272                 if ( $watchedItemStore->clearUserWatchedItems( $this->getUser() ) ) {
 273                         $this->successMessage = $this->msg( 'watchlistedit-' . $messageFor . '-done' )->parse();
 274                         $this->successMessage .= ' ' . $this->msg( 'watchlistedit-' . $messageFor . '-removed' )
 275                                         ->numParams( count( $current ) )->parse();
 276                         $this->getUser()->invalidateCache();
 277                 } else {
 278                         $watchedItemStore->clearUserWatchedItemsUsingJobQueue( $this->getUser() );
 279                         $this->successMessage = $this->msg( 'watchlistedit-clear-jobqueue' )->parse();
 280                 }
 281         }
 282
 283         /**
 284          * Print out a list of linked titles
 285          *
 286          * $titles can be an array of strings or Title objects; the former
 287          * is preferred, since Titles are very memory-heavy
 288          *
 289          * @param array $titles Array of strings, or Title objects
 290          * @param string $output
 291          */
 292         private function showTitles( $titles, &$output ) {
 293                 $talk = $this->msg( 'talkpagelinktext' )->text();
 294                 // Do a batch existence check
 295                 $batch = new LinkBatch();
 296                 if ( count( $titles ) >= 100 ) {
 297                         $output = $this->msg( 'watchlistedit-too-many' )->parse();
 298                         return;
 299                 }
 300                 foreach ( $titles as $title ) {
 301                         if ( !$title instanceof Title ) {
 302                                 $title = Title::newFromText( $title );
 303                         }
 304
 305                         if ( $title instanceof Title ) {
 306                                 $batch->addObj( $title );
 307                                 $batch->addObj( $title->getTalkPage() );
 308                         }
 309                 }
 310
 311                 $batch->execute();
 312
 313                 // Print out the list
 314                 $output .= "<ul>\n";
 315
 316                 $linkRenderer = $this->getLinkRenderer();
 317                 foreach ( $titles as $title ) {
 318                         if ( !$title instanceof Title ) {
 319                                 $title = Title::newFromText( $title );
 320                         }
 321
 322                         if ( $title instanceof Title ) {
 323                                 $output .= '<li>' .
 324                                         $linkRenderer->makeLink( $title ) . ' ' .
 325                                         $this->msg( 'parentheses' )->rawParams(
 326                                                 $linkRenderer->makeLink( $title->getTalkPage(), $talk )
 327                                         )->escaped() .
 328                                         "</li>\n";
 329                         }
 330                 }
 331
 332                 $output .= "</ul>\n";
 333         }
 334
 335         /**
 336          * Prepare a list of titles on a user's watchlist (excluding talk pages)
 337          * and return an array of (prefixed) strings
 338          *
 339          * @return array
 340          */
 341         private function getWatchlist() {
 342                 $list = [];
 343
 344                 $watchedItems = MediaWikiServices::getInstance()->getWatchedItemStore()->getWatchedItemsForUser(
 345                         $this->getUser(),
 346                         [ 'forWrite' => $this->getRequest()->wasPosted() ]
 347                 );
 348
 349                 if ( $watchedItems ) {
 350                         /** @var Title[] $titles */
 351                         $titles = [];
 352                         foreach ( $watchedItems as $watchedItem ) {
 353                                 $namespace = $watchedItem->getLinkTarget()->getNamespace();
 354                                 $dbKey = $watchedItem->getLinkTarget()->getDBkey();
 355                                 $title = Title::makeTitleSafe( $namespace, $dbKey );
 356
 357                                 if ( $this->checkTitle( $title, $namespace, $dbKey )
 358                                         && !$title->isTalkPage()
 359                                 ) {
 360                                         $titles[] = $title;
 361                                 }
 362                         }
 363
 364                         MediaWikiServices::getInstance()->getGenderCache()->doTitlesArray( $titles );
 365
 366                         foreach ( $titles as $title ) {
 367                                 $list[] = $title->getPrefixedText();
 368                         }
 369                 }
 370
 371                 $this->cleanupWatchlist();
 372
 373                 return $list;
 374         }
 375
 376         /**
 377          * Get a list of titles on a user's watchlist, excluding talk pages,
 378          * and return as a two-dimensional array with namespace and title.
 379          *
 380          * @return array
 381          */
 382         protected function getWatchlistInfo() {
 383                 $titles = [];
 384
 385                 $watchedItems = MediaWikiServices::getInstance()->getWatchedItemStore()
 386                         ->getWatchedItemsForUser( $this->getUser(), [ 'sort' => WatchedItemStore::SORT_ASC ] );
 387
 388                 $lb = new LinkBatch();
 389
 390                 foreach ( $watchedItems as $watchedItem ) {
 391                         $namespace = $watchedItem->getLinkTarget()->getNamespace();
 392                         $dbKey = $watchedItem->getLinkTarget()->getDBkey();
 393                         $lb->add( $namespace, $dbKey );
 394                         if ( !MWNamespace::isTalk( $namespace ) ) {
 395                                 $titles[$namespace][$dbKey] = 1;
 396                         }
 397                 }
 398
 399                 $lb->execute();
 400
 401                 return $titles;
 402         }
 403
 404         /**
 405          * Validates watchlist entry
 406          *
 407          * @param Title $title
 408          * @param int $namespace
 409          * @param string $dbKey
 410          * @return bool Whether this item is valid
 411          */
 412         private function checkTitle( $title, $namespace, $dbKey ) {
 413                 if ( $title
 414                         && ( $title->isExternal()
 415                                 || $title->getNamespace() < 0
 416                         )
 417                 ) {
 418                         $title = false; // unrecoverable
 419                 }
 420
 421                 if ( !$title
 422                         || $title->getNamespace() != $namespace
 423                         || $title->getDBkey() != $dbKey
 424                 ) {
 425                         $this->badItems[] = [ $title, $namespace, $dbKey ];
 426                 }
 427
 428                 return (bool)$title;
 429         }
 430
 431         /**
 432          * Attempts to clean up broken items
 433          */
 434         private function cleanupWatchlist() {
 435                 if ( !count( $this->badItems ) ) {
 436                         return; // nothing to do
 437                 }
 438
 439                 $user = $this->getUser();
 440                 $badItems = $this->badItems;
 441                 DeferredUpdates::addCallableUpdate( function () use ( $user, $badItems ) {
 442                         $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 443                         foreach ( $badItems as $row ) {
 444                                 list( $title, $namespace, $dbKey ) = $row;
 445                                 $action = $title ? 'cleaning up' : 'deleting';
 446                                 wfDebug( "User {$user->getName()} has broken watchlist item " .
 447                                         "ns($namespace):$dbKey, $action.\n" );
 448
 449                                 $store->removeWatch( $user, new TitleValue( (int)$namespace, $dbKey ) );
 450                                 // Can't just do an UPDATE instead of DELETE/INSERT due to unique index
 451                                 if ( $title ) {
 452                                         $user->addWatch( $title );
 453                                 }
 454                         }
 455                 } );
 456         }
 457
 458         /**
 459          * Add a list of targets to a user's watchlist
 460          *
 461          * @param string[]|LinkTarget[] $targets
 462          */
 463         private function watchTitles( $targets ) {
 464                 $expandedTargets = [];
 465                 foreach ( $targets as $target ) {
 466                         if ( !$target instanceof LinkTarget ) {
 467                                 try {
 468                                         $target = $this->titleParser->parseTitle( $target, NS_MAIN );
 469                                 }
 470                                 catch ( MalformedTitleException $e ) {
 471                                         continue;
 472                                 }
 473                         }
 474
 475                         $ns = $target->getNamespace();
 476                         $dbKey = $target->getDBkey();
 477                         $expandedTargets[] = new TitleValue( MWNamespace::getSubject( $ns ), $dbKey );
 478                         $expandedTargets[] = new TitleValue( MWNamespace::getTalk( $ns ), $dbKey );
 479                 }
 480
 481                 MediaWikiServices::getInstance()->getWatchedItemStore()->addWatchBatchForUser(
 482                         $this->getUser(),
 483                         $expandedTargets
 484                 );
 485         }
 486
 487         /**
 488          * Remove a list of titles from a user's watchlist
 489          *
 490          * $titles can be an array of strings or Title objects; the former
 491          * is preferred, since Titles are very memory-heavy
 492          *
 493          * @param array $titles Array of strings, or Title objects
 494          */
 495         private function unwatchTitles( $titles ) {
 496                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 497
 498                 foreach ( $titles as $title ) {
 499                         if ( !$title instanceof Title ) {
 500                                 $title = Title::newFromText( $title );
 501                         }
 502
 503                         if ( $title instanceof Title ) {
 504                                 $store->removeWatch( $this->getUser(), $title->getSubjectPage() );
 505                                 $store->removeWatch( $this->getUser(), $title->getTalkPage() );
 506
 507                                 $page = WikiPage::factory( $title );
 508                                 Hooks::run( 'UnwatchArticleComplete', [ $this->getUser(), &$page ] );
 509                         }
 510                 }
 511         }
 512
 513         public function submitNormal( $data ) {
 514                 $removed = [];
 515
 516                 foreach ( $data as $titles ) {
 517                         $this->unwatchTitles( $titles );
 518                         $removed = array_merge( $removed, $titles );
 519                 }
 520
 521                 if ( count( $removed ) > 0 ) {
 522                         $this->successMessage = $this->msg( 'watchlistedit-normal-done'
 523                         )->numParams( count( $removed ) )->parse();
 524                         $this->showTitles( $removed, $this->successMessage );
 525
 526                         return true;
 527                 } else {
 528                         return false;
 529                 }
 530         }
 531
 532         /**
 533          * Get the standard watchlist editing form
 534          *
 535          * @return HTMLForm
 536          */
 537         protected function getNormalForm() {
 538                 $fields = [];
 539                 $count = 0;
 540
 541                 // Allow subscribers to manipulate the list of watched pages (or use it
 542                 // to preload lots of details at once)
 543                 $watchlistInfo = $this->getWatchlistInfo();
 544                 Hooks::run(
 545                         'WatchlistEditorBeforeFormRender',
 546                         [ &$watchlistInfo ]
 547                 );
 548
 549                 foreach ( $watchlistInfo as $namespace => $pages ) {
 550                         $options = [];
 551
 552                         foreach ( array_keys( $pages ) as $dbkey ) {
 553                                 $title = Title::makeTitleSafe( $namespace, $dbkey );
 554
 555                                 if ( $this->checkTitle( $title, $namespace, $dbkey ) ) {
 556                                         $text = $this->buildRemoveLine( $title );
 557                                         $options[$text] = $title->getPrefixedText();
 558                                         $count++;
 559                                 }
 560                         }
 561
 562                         // checkTitle can filter some options out, avoid empty sections
 563                         if ( count( $options ) > 0 ) {
 564                                 $fields['TitlesNs' . $namespace] = [
 565                                         'class' => EditWatchlistCheckboxSeriesField::class,
 566                                         'options' => $options,
 567                                         'section' => "ns$namespace",
 568                                 ];
 569                         }
 570                 }
 571                 $this->cleanupWatchlist();
 572
 573                 if ( count( $fields ) > 1 && $count > 30 ) {
 574                         $this->toc = Linker::tocIndent();
 575                         $tocLength = 0;
 576                         $contLang = MediaWikiServices::getInstance()->getContentLanguage();
 577
 578                         foreach ( $fields as $data ) {
 579                                 # strip out the 'ns' prefix from the section name:
 580                                 $ns = substr( $data['section'], 2 );
 581
 582                                 $nsText = ( $ns == NS_MAIN )
 583                                         ? $this->msg( 'blanknamespace' )->escaped()
 584                                         : htmlspecialchars( $contLang->getFormattedNsText( $ns ) );
 585                                 $this->toc .= Linker::tocLine( "editwatchlist-{$data['section']}", $nsText,
 586                                         $this->getLanguage()->formatNum( ++$tocLength ), 1 ) . Linker::tocLineEnd();
 587                         }
 588
 589                         $this->toc = Linker::tocList( $this->toc );
 590                 } else {
 591                         $this->toc = false;
 592                 }
 593
 594                 $context = new DerivativeContext( $this->getContext() );
 595                 $context->setTitle( $this->getPageTitle() ); // Remove subpage
 596                 $form = new EditWatchlistNormalHTMLForm( $fields, $context );
 597                 $form->setSubmitTextMsg( 'watchlistedit-normal-submit' );
 598                 $form->setSubmitDestructive();
 599                 # Used message keys:
 600                 # 'accesskey-watchlistedit-normal-submit', 'tooltip-watchlistedit-normal-submit'
 601                 $form->setSubmitTooltip( 'watchlistedit-normal-submit' );
 602                 $form->setWrapperLegendMsg( 'watchlistedit-normal-legend' );
 603                 $form->addHeaderText( $this->msg( 'watchlistedit-normal-explain' )->parse() );
 604                 $form->setSubmitCallback( [ $this, 'submitNormal' ] );
 605
 606                 return $form;
 607         }
 608
 609         /**
 610          * Build the label for a checkbox, with a link to the title, and various additional bits
 611          *
 612          * @param Title $title
 613          * @return string
 614          */
 615         private function buildRemoveLine( $title ) {
 616                 $linkRenderer = $this->getLinkRenderer();
 617                 $link = $linkRenderer->makeLink( $title );
 618
 619                 $tools['talk'] = $linkRenderer->makeLink(
 620                         $title->getTalkPage(),
 621                         $this->msg( 'talkpagelinktext' )->text()
 622                 );
 623
 624                 if ( $title->exists() ) {
 625                         $tools['history'] = $linkRenderer->makeKnownLink(
 626                                 $title,
 627                                 $this->msg( 'history_small' )->text(),
 628                                 [],
 629                                 [ 'action' => 'history' ]
 630                         );
 631                 }
 632
 633                 if ( $title->getNamespace() == NS_USER && !$title->isSubpage() ) {
 634                         $tools['contributions'] = $linkRenderer->makeKnownLink(
 635                                 SpecialPage::getTitleFor( 'Contributions', $title->getText() ),
 636                                 $this->msg( 'contribslink' )->text()
 637                         );
 638                 }
 639
 640                 Hooks::run(
 641                         'WatchlistEditorBuildRemoveLine',
 642                         [ &$tools, $title, $title->isRedirect(), $this->getSkin(), &$link ]
 643                 );
 644
 645                 if ( $title->isRedirect() ) {
 646                         // Linker already makes class mw-redirect, so this is redundant
 647                         $link = '<span class="watchlistredir">' . $link . '</span>';
 648                 }
 649
 650                 return $link . ' ' .
 651                         $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->pipeList( $tools ) )->escaped();
 652         }
 653
 654         /**
 655          * Get a form for editing the watchlist in "raw" mode
 656          *
 657          * @return HTMLForm
 658          */
 659         protected function getRawForm() {
 660                 $titles = implode( "\n", $this->getWatchlist() );
 661                 $fields = [
 662                         'Titles' => [
 663                                 'type' => 'textarea',
 664                                 'label-message' => 'watchlistedit-raw-titles',
 665                                 'default' => $titles,
 666                         ],
 667                 ];
 668                 $context = new DerivativeContext( $this->getContext() );
 669                 $context->setTitle( $this->getPageTitle( 'raw' ) ); // Reset subpage
 670                 $form = new OOUIHTMLForm( $fields, $context );
 671                 $form->setSubmitTextMsg( 'watchlistedit-raw-submit' );
 672                 # Used message keys: 'accesskey-watchlistedit-raw-submit', 'tooltip-watchlistedit-raw-submit'
 673                 $form->setSubmitTooltip( 'watchlistedit-raw-submit' );
 674                 $form->setWrapperLegendMsg( 'watchlistedit-raw-legend' );
 675                 $form->addHeaderText( $this->msg( 'watchlistedit-raw-explain' )->parse() );
 676                 $form->setSubmitCallback( [ $this, 'submitRaw' ] );
 677
 678                 return $form;
 679         }
 680
 681         /**
 682          * Get a form for clearing the watchlist
 683          *
 684          * @return HTMLForm
 685          */
 686         protected function getClearForm() {
 687                 $context = new DerivativeContext( $this->getContext() );
 688                 $context->setTitle( $this->getPageTitle( 'clear' ) ); // Reset subpage
 689                 $form = new OOUIHTMLForm( [], $context );
 690                 $form->setSubmitTextMsg( 'watchlistedit-clear-submit' );
 691                 # Used message keys: 'accesskey-watchlistedit-clear-submit', 'tooltip-watchlistedit-clear-submit'
 692                 $form->setSubmitTooltip( 'watchlistedit-clear-submit' );
 693                 $form->setWrapperLegendMsg( 'watchlistedit-clear-legend' );
 694                 $form->addHeaderText( $this->msg( 'watchlistedit-clear-explain' )->parse() );
 695                 $form->setSubmitCallback( [ $this, 'submitClear' ] );
 696                 $form->setSubmitDestructive();
 697
 698                 return $form;
 699         }
 700
 701         /**
 702          * Determine whether we are editing the watchlist, and if so, what
 703          * kind of editing operation
 704          *
 705          * @param WebRequest $request
 706          * @param string $par
 707          * @return int
 708          */
 709         public static function getMode( $request, $par ) {
 710                 $mode = strtolower( $request->getVal( 'action', $par ) );
 711
 712                 switch ( $mode ) {
 713                         case 'clear':
 714                         case self::EDIT_CLEAR:
 715                                 return self::EDIT_CLEAR;
 716                         case 'raw':
 717                         case self::EDIT_RAW:
 718                                 return self::EDIT_RAW;
 719                         case 'edit':
 720                         case self::EDIT_NORMAL:
 721                                 return self::EDIT_NORMAL;
 722                         default:
 723                                 return false;
 724                 }
 725         }
 726
 727         /**
 728          * Build a set of links for convenient navigation
 729          * between watchlist viewing and editing modes
 730          *
 731          * @param Language $lang
 732          * @param LinkRenderer|null $linkRenderer
 733          * @return string
 734          */
 735         public static function buildTools( $lang, LinkRenderer $linkRenderer = null ) {
 736                 if ( !$lang instanceof Language ) {
 737                         // back-compat where the first parameter was $unused
 738                         global $wgLang;
 739                         $lang = $wgLang;
 740                 }
 741                 if ( !$linkRenderer ) {
 742                         $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 743                 }
 744
 745                 $tools = [];
 746                 $modes = [
 747                         'view' => [ 'Watchlist', false ],
 748                         'edit' => [ 'EditWatchlist', false ],
 749                         'raw' => [ 'EditWatchlist', 'raw' ],
 750                         'clear' => [ 'EditWatchlist', 'clear' ],
 751                 ];
 752
 753                 foreach ( $modes as $mode => $arr ) {
 754                         // can use messages 'watchlisttools-view', 'watchlisttools-edit', 'watchlisttools-raw'
 755                         $tools[] = $linkRenderer->makeKnownLink(
 756                                 SpecialPage::getTitleFor( $arr[0], $arr[1] ),
 757                                 wfMessage( "watchlisttools-{$mode}" )->text()
 758                         );
 759                 }
 760
 761                 return Html::rawElement(
 762                         'span',
 763                         [ 'class' => 'mw-watchlist-toollinks' ],
 764                         wfMessage( 'parentheses' )->rawParams( $lang->pipeList( $tools ) )->escaped()
 765                 );
 766         }
 767 }