includes/specials/SpecialWatchlist.php

   1 <?php
   2 /**
   3  * Implements Special:Watchlist
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 use MediaWiki\MediaWikiServices;
  25 use Wikimedia\Rdbms\ResultWrapper;
  26 use Wikimedia\Rdbms\IDatabase;
  27
  28 /**
  29  * A special page that lists last changes made to the wiki,
  30  * limited to user-defined list of titles.
  31  *
  32  * @ingroup SpecialPage
  33  */
  34 class SpecialWatchlist extends ChangesListSpecialPage {
  35         private $maxDays;
  36
  37         public function __construct( $page = 'Watchlist', $restriction = 'viewmywatchlist' ) {
  38                 parent::__construct( $page, $restriction );
  39
  40                 $this->maxDays = $this->getConfig()->get( 'RCMaxAge' ) / ( 3600 * 24 );
  41         }
  42
  43         public function doesWrites() {
  44                 return true;
  45         }
  46
  47         /**
  48          * Main execution point
  49          *
  50          * @param string $subpage
  51          */
  52         function execute( $subpage ) {
  53                 // Anons don't get a watchlist
  54                 $this->requireLogin( 'watchlistanontext' );
  55
  56                 $output = $this->getOutput();
  57                 $request = $this->getRequest();
  58                 $this->addHelpLink( 'Help:Watching pages' );
  59                 $output->addModules( [
  60                         'mediawiki.special.changeslist.visitedstatus',
  61                         'mediawiki.special.watchlist',
  62                 ] );
  63                 $output->addModuleStyles( [ 'mediawiki.special.watchlist.styles' ] );
  64
  65                 $mode = SpecialEditWatchlist::getMode( $request, $subpage );
  66                 if ( $mode !== false ) {
  67                         if ( $mode === SpecialEditWatchlist::EDIT_RAW ) {
  68                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'raw' );
  69                         } elseif ( $mode === SpecialEditWatchlist::EDIT_CLEAR ) {
  70                                 $title = SpecialPage::getTitleFor( 'EditWatchlist', 'clear' );
  71                         } else {
  72                                 $title = SpecialPage::getTitleFor( 'EditWatchlist' );
  73                         }
  74
  75                         $output->redirect( $title->getLocalURL() );
  76
  77                         return;
  78                 }
  79
  80                 $this->checkPermissions();
  81
  82                 $user = $this->getUser();
  83                 $opts = $this->getOptions();
  84
  85                 $config = $this->getConfig();
  86                 if ( ( $config->get( 'EnotifWatchlist' ) || $config->get( 'ShowUpdatedMarker' ) )
  87                         && $request->getVal( 'reset' )
  88                         && $request->wasPosted()
  89                         && $user->matchEditToken( $request->getVal( 'token' ) )
  90                 ) {
  91                         $user->clearAllNotifications();
  92                         $output->redirect( $this->getPageTitle()->getFullURL( $opts->getChangedValues() ) );
  93
  94                         return;
  95                 }
  96
  97                 parent::execute( $subpage );
  98
  99                 if ( $this->isStructuredFilterUiEnabled() ) {
 100                         $output->addModuleStyles( [ 'mediawiki.rcfilters.highlightCircles.seenunseen.styles' ] );
 101
 102                         $output->addJsConfigVars( 'wgStructuredChangeFiltersLiveUpdateSupported', false );
 103                         $output->addJsConfigVars(
 104                                 'wgStructuredChangeFiltersSavedQueriesPreferenceName',
 105                                 'rcfilters-wl-saved-queries'
 106                         );
 107                         $output->addJsConfigVars(
 108                                 'wgStructuredChangeFiltersEditWatchlistUrl',
 109                                 SpecialPage::getTitleFor( 'EditWatchlist' )->getLocalURL()
 110                         );
 111                 }
 112         }
 113
 114         public function isStructuredFilterUiEnabled() {
 115                 return $this->getRequest()->getBool( 'rcfilters' ) || (
 116                         $this->getConfig()->get( 'StructuredChangeFiltersOnWatchlist' ) &&
 117                         $this->getUser()->getOption( 'rcenhancedfilters' )
 118                 );
 119         }
 120
 121         public function isStructuredFilterUiEnabledByDefault() {
 122                 return $this->getConfig()->get( 'StructuredChangeFiltersOnWatchlist' ) &&
 123                         $this->getUser()->getDefaultOption( 'rcenhancedfilters' );
 124         }
 125
 126         /**
 127          * Return an array of subpages that this special page will accept.
 128          *
 129          * @see also SpecialEditWatchlist::getSubpagesForPrefixSearch
 130          * @return string[] subpages
 131          */
 132         public function getSubpagesForPrefixSearch() {
 133                 return [
 134                         'clear',
 135                         'edit',
 136                         'raw',
 137                 ];
 138         }
 139
 140         /**
 141          * @inheritDoc
 142          */
 143         protected function transformFilterDefinition( array $filterDefinition ) {
 144                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 145                         $filterDefinition['showHide'] = 'wl' . $filterDefinition['showHideSuffix'];
 146                 }
 147
 148                 return $filterDefinition;
 149         }
 150
 151         /**
 152          * @inheritDoc
 153          */
 154         protected function registerFilters() {
 155                 parent::registerFilters();
 156
 157                 // legacy 'extended' filter
 158                 $this->registerFilterGroup( new ChangesListBooleanFilterGroup( [
 159                         'name' => 'extended-group',
 160                         'filters' => [
 161                                 [
 162                                         'name' => 'extended',
 163                                         'isReplacedInStructuredUi' => true,
 164                                         'activeValue' => false,
 165                                         'default' => $this->getUser()->getBoolOption( 'extendwatchlist' ),
 166                                         'queryCallable' => function ( $specialClassName, $ctx, $dbr, &$tables,
 167                                                                                                   &$fields, &$conds, &$query_options, &$join_conds ) {
 168                                                 $nonRevisionTypes = [ RC_LOG ];
 169                                                 Hooks::run( 'SpecialWatchlistGetNonRevisionTypes', [ &$nonRevisionTypes ] );
 170                                                 if ( $nonRevisionTypes ) {
 171                                                         $conds[] = $dbr->makeList(
 172                                                                 [
 173                                                                         'rc_this_oldid=page_latest',
 174                                                                         'rc_type' => $nonRevisionTypes,
 175                                                                 ],
 176                                                                 LIST_OR
 177                                                         );
 178                                                 }
 179                                         },
 180                                 ]
 181                         ],
 182
 183                 ] ) );
 184
 185                 if ( $this->isStructuredFilterUiEnabled() ) {
 186                         $this->getFilterGroup( 'lastRevision' )
 187                                 ->getFilter( 'hidepreviousrevisions' )
 188                                 ->setDefault( !$this->getUser()->getBoolOption( 'extendwatchlist' ) );
 189                 }
 190
 191                 $this->registerFilterGroup( new ChangesListStringOptionsFilterGroup( [
 192                         'name' => 'watchlistactivity',
 193                         'title' => 'rcfilters-filtergroup-watchlistactivity',
 194                         'class' => ChangesListStringOptionsFilterGroup::class,
 195                         'priority' => 3,
 196                         'isFullCoverage' => true,
 197                         'filters' => [
 198                                 [
 199                                         'name' => 'unseen',
 200                                         'label' => 'rcfilters-filter-watchlistactivity-unseen-label',
 201                                         'description' => 'rcfilters-filter-watchlistactivity-unseen-description',
 202                                         'cssClassSuffix' => 'watchedunseen',
 203                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
 204                                                 $changeTs = $rc->getAttribute( 'rc_timestamp' );
 205                                                 $lastVisitTs = $rc->getAttribute( 'wl_notificationtimestamp' );
 206                                                 return $lastVisitTs !== null && $changeTs >= $lastVisitTs;
 207                                         },
 208                                 ],
 209                                 [
 210                                         'name' => 'seen',
 211                                         'label' => 'rcfilters-filter-watchlistactivity-seen-label',
 212                                         'description' => 'rcfilters-filter-watchlistactivity-seen-description',
 213                                         'cssClassSuffix' => 'watchedseen',
 214                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
 215                                                 $changeTs = $rc->getAttribute( 'rc_timestamp' );
 216                                                 $lastVisitTs = $rc->getAttribute( 'wl_notificationtimestamp' );
 217                                                 return $lastVisitTs === null || $changeTs < $lastVisitTs;
 218                                         }
 219                                 ],
 220                         ],
 221                         'default' => ChangesListStringOptionsFilterGroup::NONE,
 222                         'queryCallable' => function ( $specialPageClassName, $context, $dbr,
 223                                                                                   &$tables, &$fields, &$conds, &$query_options, &$join_conds, $selectedValues ) {
 224                                 if ( $selectedValues === [ 'seen' ] ) {
 225                                         $conds[] = $dbr->makeList( [
 226                                                 'wl_notificationtimestamp IS NULL',
 227                                                 'rc_timestamp < wl_notificationtimestamp'
 228                                         ], LIST_OR );
 229                                 } elseif ( $selectedValues === [ 'unseen' ] ) {
 230                                         $conds[] = $dbr->makeList( [
 231                                                 'wl_notificationtimestamp IS NOT NULL',
 232                                                 'rc_timestamp >= wl_notificationtimestamp'
 233                                         ], LIST_AND );
 234                                 }
 235                         }
 236                 ] ) );
 237
 238                 $user = $this->getUser();
 239
 240                 $significance = $this->getFilterGroup( 'significance' );
 241                 $hideMinor = $significance->getFilter( 'hideminor' );
 242                 $hideMinor->setDefault( $user->getBoolOption( 'watchlisthideminor' ) );
 243
 244                 $automated = $this->getFilterGroup( 'automated' );
 245                 $hideBots = $automated->getFilter( 'hidebots' );
 246                 $hideBots->setDefault( $user->getBoolOption( 'watchlisthidebots' ) );
 247
 248                 $registration = $this->getFilterGroup( 'registration' );
 249                 $hideAnons = $registration->getFilter( 'hideanons' );
 250                 $hideAnons->setDefault( $user->getBoolOption( 'watchlisthideanons' ) );
 251                 $hideLiu = $registration->getFilter( 'hideliu' );
 252                 $hideLiu->setDefault( $user->getBoolOption( 'watchlisthideliu' ) );
 253
 254                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 255                 if ( $reviewStatus !== null ) {
 256                         // Conditional on feature being available and rights
 257                         $hidePatrolled = $reviewStatus->getFilter( 'hidepatrolled' );
 258                         $hidePatrolled->setDefault( $user->getBoolOption( 'watchlisthidepatrolled' ) );
 259                 }
 260
 261                 $authorship = $this->getFilterGroup( 'authorship' );
 262                 $hideMyself = $authorship->getFilter( 'hidemyself' );
 263                 $hideMyself->setDefault( $user->getBoolOption( 'watchlisthideown' ) );
 264
 265                 $changeType = $this->getFilterGroup( 'changeType' );
 266                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 267                 if ( $hideCategorization !== null ) {
 268                         // Conditional on feature being available
 269                         $hideCategorization->setDefault( $user->getBoolOption( 'watchlisthidecategorization' ) );
 270                 }
 271         }
 272
 273         /**
 274          * Get a FormOptions object containing the default options
 275          *
 276          * @return FormOptions
 277          */
 278         public function getDefaultOptions() {
 279                 $opts = parent::getDefaultOptions();
 280
 281                 $opts->add( 'days', $this->getDefaultDays(), FormOptions::FLOAT );
 282                 $opts->add( 'limit', $this->getDefaultLimit(), FormOptions::INT );
 283
 284                 return $opts;
 285         }
 286
 287         public function validateOptions( FormOptions $opts ) {
 288                 $opts->validateBounds( 'days', 0, $this->maxDays );
 289                 $opts->validateIntBounds( 'limit', 0, 5000 );
 290                 parent::validateOptions( $opts );
 291         }
 292
 293         /**
 294          * Get all custom filters
 295          *
 296          * @return array Map of filter URL param names to properties (msg/default)
 297          */
 298         protected function getCustomFilters() {
 299                 if ( $this->customFilters === null ) {
 300                         $this->customFilters = parent::getCustomFilters();
 301                         Hooks::run( 'SpecialWatchlistFilters', [ $this, &$this->customFilters ], '1.23' );
 302                 }
 303
 304                 return $this->customFilters;
 305         }
 306
 307         /**
 308          * Fetch values for a FormOptions object from the WebRequest associated with this instance.
 309          *
 310          * Maps old pre-1.23 request parameters Watchlist used to use (different from Recentchanges' ones)
 311          * to the current ones.
 312          *
 313          * @param FormOptions $opts
 314          * @return FormOptions
 315          */
 316         protected function fetchOptionsFromRequest( $opts ) {
 317                 static $compatibilityMap = [
 318                         'hideMinor' => 'hideminor',
 319                         'hideBots' => 'hidebots',
 320                         'hideAnons' => 'hideanons',
 321                         'hideLiu' => 'hideliu',
 322                         'hidePatrolled' => 'hidepatrolled',
 323                         'hideOwn' => 'hidemyself',
 324                 ];
 325
 326                 $params = $this->getRequest()->getValues();
 327                 foreach ( $compatibilityMap as $from => $to ) {
 328                         if ( isset( $params[$from] ) ) {
 329                                 $params[$to] = $params[$from];
 330                                 unset( $params[$from] );
 331                         }
 332                 }
 333
 334                 if ( $this->getRequest()->getVal( 'action' ) == 'submit' ) {
 335                         $allBooleansFalse = [];
 336
 337                         // If the user submitted the form, start with a baseline of "all
 338                         // booleans are false", then change the ones they checked.  This
 339                         // means we ignore the defaults.
 340
 341                         // This is how we handle the fact that HTML forms don't submit
 342                         // unchecked boxes.
 343                         foreach ( $this->filterGroups as $filterGroup ) {
 344                                 if ( $filterGroup instanceof ChangesListBooleanFilterGroup ) {
 345                                         /** @var ChangesListBooleanFilter $filter */
 346                                         foreach ( $filterGroup->getFilters() as $filter ) {
 347                                                 if ( $filter->displaysOnUnstructuredUi() ) {
 348                                                         $allBooleansFalse[$filter->getName()] = false;
 349                                                 }
 350                                         }
 351                                 }
 352                         }
 353
 354                         $params = $params + $allBooleansFalse;
 355                 }
 356
 357                 // Not the prettiest way to achieve this… FormOptions internally depends on data sanitization
 358                 // methods defined on WebRequest and removing this dependency would cause some code duplication.
 359                 $request = new DerivativeRequest( $this->getRequest(), $params );
 360                 $opts->fetchValuesFromRequest( $request );
 361
 362                 return $opts;
 363         }
 364
 365         /**
 366          * @inheritDoc
 367          */
 368         protected function buildQuery( &$tables, &$fields, &$conds, &$query_options,
 369                 &$join_conds, FormOptions $opts
 370         ) {
 371                 $dbr = $this->getDB();
 372                 parent::buildQuery( $tables, $fields, $conds, $query_options, $join_conds,
 373                         $opts );
 374
 375                 // Calculate cutoff
 376                 if ( $opts['days'] > 0 ) {
 377                         $conds[] = 'rc_timestamp > ' .
 378                                 $dbr->addQuotes( $dbr->timestamp( time() - $opts['days'] * 3600 * 24 ) );
 379                 }
 380         }
 381
 382         /**
 383          * @inheritDoc
 384          */
 385         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 386                 $join_conds, FormOptions $opts
 387         ) {
 388                 $dbr = $this->getDB();
 389                 $user = $this->getUser();
 390
 391                 $tables = array_merge( [ 'recentchanges', 'watchlist' ], $tables );
 392                 $fields = array_merge( RecentChange::selectFields(), $fields );
 393
 394                 $join_conds = array_merge(
 395                         [
 396                                 'watchlist' => [
 397                                         'INNER JOIN',
 398                                         [
 399                                                 'wl_user' => $user->getId(),
 400                                                 'wl_namespace=rc_namespace',
 401                                                 'wl_title=rc_title'
 402                                         ],
 403                                 ],
 404                         ],
 405                         $join_conds
 406                 );
 407
 408                 $tables[] = 'page';
 409                 $fields[] = 'page_latest';
 410                 $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 411
 412                 $fields[] = 'wl_notificationtimestamp';
 413
 414                 // Log entries with DELETED_ACTION must not show up unless the user has
 415                 // the necessary rights.
 416                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 417                         $bitmask = LogPage::DELETED_ACTION;
 418                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 419                         $bitmask = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 420                 } else {
 421                         $bitmask = 0;
 422                 }
 423                 if ( $bitmask ) {
 424                         $conds[] = $dbr->makeList( [
 425                                 'rc_type != ' . RC_LOG,
 426                                 $dbr->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask",
 427                         ], LIST_OR );
 428                 }
 429
 430                 $tagFilter = $opts['tagfilter'] ? explode( '|', $opts['tagfilter'] ) : [];
 431                 ChangeTags::modifyDisplayQuery(
 432                         $tables,
 433                         $fields,
 434                         $conds,
 435                         $join_conds,
 436                         $query_options,
 437                         $tagFilter
 438                 );
 439
 440                 $this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts );
 441
 442                 if ( $this->areFiltersInConflict() ) {
 443                         return false;
 444                 }
 445
 446                 $orderByAndLimit = [
 447                         'ORDER BY' => 'rc_timestamp DESC',
 448                         'LIMIT' => $opts['limit']
 449                 ];
 450                 if ( in_array( 'DISTINCT', $query_options ) ) {
 451                         // ChangeTags::modifyDisplayQuery() adds DISTINCT when filtering on multiple tags.
 452                         // In order to prevent DISTINCT from causing query performance problems,
 453                         // we have to GROUP BY the primary key. This in turn requires us to add
 454                         // the primary key to the end of the ORDER BY, and the old ORDER BY to the
 455                         // start of the GROUP BY
 456                         $orderByAndLimit['ORDER BY'] = 'rc_timestamp DESC, rc_id DESC';
 457                         $orderByAndLimit['GROUP BY'] = 'rc_timestamp, rc_id';
 458                 }
 459                 // array_merge() is used intentionally here so that hooks can, should
 460                 // they so desire, override the ORDER BY / LIMIT condition(s)
 461                 $query_options = array_merge( $orderByAndLimit, $query_options );
 462
 463                 return $dbr->select(
 464                         $tables,
 465                         $fields,
 466                         $conds,
 467                         __METHOD__,
 468                         $query_options,
 469                         $join_conds
 470                 );
 471         }
 472
 473         protected function runMainQueryHook( &$tables, &$fields, &$conds, &$query_options,
 474                 &$join_conds, $opts
 475         ) {
 476                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 477                         && Hooks::run(
 478                                 'SpecialWatchlistQuery',
 479                                 [ &$conds, &$tables, &$join_conds, &$fields, $opts ],
 480                                 '1.23'
 481                         );
 482         }
 483
 484         /**
 485          * Return a IDatabase object for reading
 486          *
 487          * @return IDatabase
 488          */
 489         protected function getDB() {
 490                 return wfGetDB( DB_REPLICA, 'watchlist' );
 491         }
 492
 493         /**
 494          * Output feed links.
 495          */
 496         public function outputFeedLinks() {
 497                 $user = $this->getUser();
 498                 $wlToken = $user->getTokenFromOption( 'watchlisttoken' );
 499                 if ( $wlToken ) {
 500                         $this->addFeedLinks( [
 501                                 'action' => 'feedwatchlist',
 502                                 'allrev' => 1,
 503                                 'wlowner' => $user->getName(),
 504                                 'wltoken' => $wlToken,
 505                         ] );
 506                 }
 507         }
 508
 509         /**
 510          * Build and output the actual changes list.
 511          *
 512          * @param ResultWrapper $rows Database rows
 513          * @param FormOptions $opts
 514          */
 515         public function outputChangesList( $rows, $opts ) {
 516                 $dbr = $this->getDB();
 517                 $user = $this->getUser();
 518                 $output = $this->getOutput();
 519
 520                 # Show a message about replica DB lag, if applicable
 521                 $lag = wfGetLB()->safeGetLag( $dbr );
 522                 if ( $lag > 0 ) {
 523                         $output->showLagWarning( $lag );
 524                 }
 525
 526                 # If no rows to display, show message before try to render the list
 527                 if ( $rows->numRows() == 0 ) {
 528                         $output->wrapWikiMsg(
 529                                 "<div class='mw-changeslist-empty'>\n$1\n</div>", 'recentchanges-noresult'
 530                         );
 531                         return;
 532                 }
 533
 534                 $dbr->dataSeek( $rows, 0 );
 535
 536                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 537                 $list->setWatchlistDivs();
 538                 $list->initChangesListRows( $rows );
 539                 if ( $user->getOption( 'watchlistunwatchlinks' ) ) {
 540                         $list->setChangeLinePrefixer( function ( RecentChange $rc, ChangesList $cl, $grouped ) {
 541                                 // Don't show unwatch link if the line is a grouped log entry using EnhancedChangesList,
 542                                 // since EnhancedChangesList groups log entries by performer rather than by target article
 543                                 if ( $rc->mAttribs['rc_type'] == RC_LOG && $cl instanceof EnhancedChangesList &&
 544                                         $grouped ) {
 545                                         return '';
 546                                 } else {
 547                                         return $this->getLinkRenderer()
 548                                                         ->makeKnownLink( $rc->getTitle(),
 549                                                                 $this->msg( 'watchlist-unwatch' )->text(), [
 550                                                                         'class' => 'mw-unwatch-link',
 551                                                                         'title' => $this->msg( 'tooltip-ca-unwatch' )->text()
 552                                                                 ], [ 'action' => 'unwatch' ] ) . '&#160;';
 553                                 }
 554                         } );
 555                 }
 556                 $dbr->dataSeek( $rows, 0 );
 557
 558                 if ( $this->getConfig()->get( 'RCShowWatchingUsers' )
 559                         && $user->getOption( 'shownumberswatching' )
 560                 ) {
 561                         $watchedItemStore = MediaWikiServices::getInstance()->getWatchedItemStore();
 562                 }
 563
 564                 $s = $list->beginRecentChangesList();
 565
 566                 if ( $this->isStructuredFilterUiEnabled() ) {
 567                         $s .= $this->makeLegend();
 568                 }
 569
 570                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 571                 $counter = 1;
 572                 foreach ( $rows as $obj ) {
 573                         # Make RC entry
 574                         $rc = RecentChange::newFromRow( $obj );
 575
 576                         # Skip CatWatch entries for hidden cats based on user preference
 577                         if (
 578                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 579                                 !$userShowHiddenCats &&
 580                                 $rc->getParam( 'hidden-cat' )
 581                         ) {
 582                                 continue;
 583                         }
 584
 585                         $rc->counter = $counter++;
 586
 587                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' ) ) {
 588                                 $updated = $obj->wl_notificationtimestamp;
 589                         } else {
 590                                 $updated = false;
 591                         }
 592
 593                         if ( isset( $watchedItemStore ) ) {
 594                                 $rcTitleValue = new TitleValue( (int)$obj->rc_namespace, $obj->rc_title );
 595                                 $rc->numberofWatchingusers = $watchedItemStore->countWatchers( $rcTitleValue );
 596                         } else {
 597                                 $rc->numberofWatchingusers = 0;
 598                         }
 599
 600                         $changeLine = $list->recentChangesLine( $rc, $updated, $counter );
 601                         if ( $changeLine !== false ) {
 602                                 $s .= $changeLine;
 603                         }
 604                 }
 605                 $s .= $list->endRecentChangesList();
 606
 607                 $output->addHTML( $s );
 608         }
 609
 610         /**
 611          * Set the text to be displayed above the changes
 612          *
 613          * @param FormOptions $opts
 614          * @param int $numRows Number of rows in the result to show after this header
 615          */
 616         public function doHeader( $opts, $numRows ) {
 617                 $user = $this->getUser();
 618                 $out = $this->getOutput();
 619
 620                 $out->addSubtitle(
 621                         $this->msg( 'watchlistfor2', $user->getName() )
 622                                 ->rawParams( SpecialEditWatchlist::buildTools(
 623                                         $this->getLanguage(),
 624                                         $this->getLinkRenderer()
 625                                 ) )
 626                 );
 627
 628                 $this->setTopText( $opts );
 629
 630                 $form = '';
 631
 632                 $form .= Xml::openElement( 'form', [
 633                         'method' => 'get',
 634                         'action' => wfScript(),
 635                         'id' => 'mw-watchlist-form'
 636                 ] );
 637                 $form .= Html::hidden( 'title', $this->getPageTitle()->getPrefixedText() );
 638                 $form .= Xml::fieldset(
 639                         $this->msg( 'watchlist-options' )->text(),
 640                         false,
 641                         [ 'id' => 'mw-watchlist-options', 'class' => 'cloptions' ]
 642                 );
 643
 644                 if ( !$this->isStructuredFilterUiEnabled() ) {
 645                         $form .= $this->makeLegend();
 646                 }
 647
 648                 $lang = $this->getLanguage();
 649                 if ( $opts['days'] > 0 ) {
 650                         $days = $opts['days'];
 651                 } else {
 652                         $days = $this->maxDays;
 653                 }
 654                 $timestamp = wfTimestampNow();
 655                 $wlInfo = Html::rawElement(
 656                         'span',
 657                         [ 'class' => 'wlinfo' ],
 658                         $this->msg( 'wlnote' )->numParams( $numRows, round( $days * 24 ) )->params(
 659                                 $lang->userDate( $timestamp, $user ), $lang->userTime( $timestamp, $user )
 660                         )->parse()
 661                 ) . "<br />\n";
 662
 663                 $nondefaults = $opts->getChangedValues();
 664                 $cutofflinks = Html::rawElement(
 665                         'span',
 666                         [ 'class' => 'cldays cloption' ],
 667                         $this->msg( 'wlshowtime' ) . ' ' . $this->cutoffselector( $opts )
 668                 );
 669
 670                 # Spit out some control panel links
 671                 $links = [];
 672                 $namesOfDisplayedFilters = [];
 673                 foreach ( $this->getFilterGroups() as $groupName => $group ) {
 674                         if ( !$group->isPerGroupRequestParameter() ) {
 675                                 foreach ( $group->getFilters() as $filterName => $filter ) {
 676                                         if ( $filter->displaysOnUnstructuredUi( $this ) ) {
 677                                                 $namesOfDisplayedFilters[] = $filterName;
 678                                                 $links[] = $this->showHideCheck(
 679                                                         $nondefaults,
 680                                                         $filter->getShowHide(),
 681                                                         $filterName,
 682                                                         $opts[$filterName],
 683                                                         $filter->isFeatureAvailableOnStructuredUi( $this )
 684                                                 );
 685                                         }
 686                                 }
 687                         }
 688                 }
 689
 690                 $hiddenFields = $nondefaults;
 691                 $hiddenFields['action'] = 'submit';
 692                 unset( $hiddenFields['namespace'] );
 693                 unset( $hiddenFields['invert'] );
 694                 unset( $hiddenFields['associated'] );
 695                 unset( $hiddenFields['days'] );
 696                 foreach ( $namesOfDisplayedFilters as $filterName ) {
 697                         unset( $hiddenFields[$filterName] );
 698                 }
 699
 700                 # Namespace filter and put the whole form together.
 701                 $form .= $wlInfo;
 702                 $form .= $cutofflinks;
 703                 $form .= Html::rawElement(
 704                         'span',
 705                         [ 'class' => 'clshowhide' ],
 706                         $this->msg( 'watchlist-hide' ) .
 707                         $this->msg( 'colon-separator' )->escaped() .
 708                         implode( ' ', $links )
 709                 );
 710                 $form .= "\n<br />\n";
 711
 712                 $namespaceForm = Html::namespaceSelector(
 713                         [
 714                                 'selected' => $opts['namespace'],
 715                                 'all' => '',
 716                                 'label' => $this->msg( 'namespace' )->text()
 717                         ], [
 718                                 'name' => 'namespace',
 719                                 'id' => 'namespace',
 720                                 'class' => 'namespaceselector',
 721                         ]
 722                 ) . "\n";
 723                 $namespaceForm .= '<span class="mw-input-with-label">' . Xml::checkLabel(
 724                         $this->msg( 'invert' )->text(),
 725                         'invert',
 726                         'nsinvert',
 727                         $opts['invert'],
 728                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 729                 ) . "</span>\n";
 730                 $namespaceForm .= '<span class="mw-input-with-label">' . Xml::checkLabel(
 731                         $this->msg( 'namespace_association' )->text(),
 732                         'associated',
 733                         'nsassociated',
 734                         $opts['associated'],
 735                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 736                 ) . "</span>\n";
 737                 $form .= Html::rawElement(
 738                         'span',
 739                         [ 'class' => 'namespaceForm cloption' ],
 740                         $namespaceForm
 741                 );
 742
 743                 $form .= Xml::submitButton(
 744                         $this->msg( 'watchlist-submit' )->text(),
 745                         [ 'class' => 'cloption-submit' ]
 746                 ) . "\n";
 747                 foreach ( $hiddenFields as $key => $value ) {
 748                         $form .= Html::hidden( $key, $value ) . "\n";
 749                 }
 750                 $form .= Xml::closeElement( 'fieldset' ) . "\n";
 751                 $form .= Xml::closeElement( 'form' ) . "\n";
 752
 753                 // Insert a placeholder for RCFilters
 754                 if ( $this->isStructuredFilterUiEnabled() ) {
 755                         $rcfilterContainer = Html::element(
 756                                 'div',
 757                                 [ 'class' => 'rcfilters-container' ]
 758                         );
 759
 760                         $loadingContainer = Html::rawElement(
 761                                 'div',
 762                                 [ 'class' => 'rcfilters-spinner' ],
 763                                 Html::element(
 764                                         'div',
 765                                         [ 'class' => 'rcfilters-spinner-bounce' ]
 766                                 )
 767                         );
 768
 769                         // Wrap both with rcfilters-head
 770                         $this->getOutput()->addHTML(
 771                                 Html::rawElement(
 772                                         'div',
 773                                         [ 'class' => 'rcfilters-head' ],
 774                                         $rcfilterContainer . $form
 775                                 )
 776                         );
 777
 778                         // Add spinner
 779                         $this->getOutput()->addHTML( $loadingContainer );
 780                 } else {
 781                         $this->getOutput()->addHTML( $form );
 782                 }
 783
 784                 $this->setBottomText( $opts );
 785         }
 786
 787         function cutoffselector( $options ) {
 788                 // Cast everything to strings immediately, so that we know all of the values have the same
 789                 // precision, and can be compared with '==='. 2/24 has a few more decimal places than its
 790                 // default string representation, for example, and would confuse comparisons.
 791
 792                 // Misleadingly, the 'days' option supports hours too.
 793                 $days = array_map( 'strval', [ 1 / 24, 2 / 24, 6 / 24, 12 / 24, 1, 3, 7 ] );
 794
 795                 $userWatchlistOption = (string)$this->getUser()->getOption( 'watchlistdays' );
 796                 // add the user preference, if it isn't available already
 797                 if ( !in_array( $userWatchlistOption, $days ) && $userWatchlistOption !== '0' ) {
 798                         $days[] = $userWatchlistOption;
 799                 }
 800
 801                 $maxDays = (string)$this->maxDays;
 802                 // add the maximum possible value, if it isn't available already
 803                 if ( !in_array( $maxDays, $days ) ) {
 804                         $days[] = $maxDays;
 805                 }
 806
 807                 $selected = (string)$options['days'];
 808                 if ( $selected <= 0 ) {
 809                         $selected = $maxDays;
 810                 }
 811
 812                 // add the currently selected value, if it isn't available already
 813                 if ( !in_array( $selected, $days ) ) {
 814                         $days[] = $selected;
 815                 }
 816
 817                 $select = new XmlSelect( 'days', 'days', $selected );
 818
 819                 asort( $days );
 820                 foreach ( $days as $value ) {
 821                         if ( $value < 1 ) {
 822                                 $name = $this->msg( 'hours' )->numParams( $value * 24 )->text();
 823                         } else {
 824                                 $name = $this->msg( 'days' )->numParams( $value )->text();
 825                         }
 826                         $select->addOption( $name, $value );
 827                 }
 828
 829                 return $select->getHTML() . "\n<br />\n";
 830         }
 831
 832         function setTopText( FormOptions $opts ) {
 833                 $nondefaults = $opts->getChangedValues();
 834                 $form = '';
 835                 $user = $this->getUser();
 836
 837                 $numItems = $this->countItems();
 838                 $showUpdatedMarker = $this->getConfig()->get( 'ShowUpdatedMarker' );
 839
 840                 // Show watchlist header
 841                 $watchlistHeader = '';
 842                 if ( $numItems == 0 ) {
 843                         $watchlistHeader = $this->msg( 'nowatchlist' )->parse();
 844                 } else {
 845                         $watchlistHeader .= $this->msg( 'watchlist-details' )->numParams( $numItems )->parse() . "\n";
 846                         if ( $this->getConfig()->get( 'EnotifWatchlist' )
 847                                 && $user->getOption( 'enotifwatchlistpages' )
 848                         ) {
 849                                 $watchlistHeader .= $this->msg( 'wlheader-enotif' )->parse() . "\n";
 850                         }
 851                         if ( $showUpdatedMarker ) {
 852                                 $watchlistHeader .= $this->msg(
 853                                         $this->isStructuredFilterUiEnabled() ?
 854                                                 'rcfilters-watchlist-showupdated' :
 855                                                 'wlheader-showupdated'
 856                                 )->parse() . "\n";
 857                         }
 858                 }
 859                 $form .= Html::rawElement(
 860                         'div',
 861                         [ 'class' => 'watchlistDetails' ],
 862                         $watchlistHeader
 863                 );
 864
 865                 if ( $numItems > 0 && $showUpdatedMarker ) {
 866                         $form .= Xml::openElement( 'form', [ 'method' => 'post',
 867                                 'action' => $this->getPageTitle()->getLocalURL(),
 868                                 'id' => 'mw-watchlist-resetbutton' ] ) . "\n" .
 869                         Xml::submitButton( $this->msg( 'enotif_reset' )->text(),
 870                                 [ 'name' => 'mw-watchlist-reset-submit' ] ) . "\n" .
 871                         Html::hidden( 'token', $user->getEditToken() ) . "\n" .
 872                         Html::hidden( 'reset', 'all' ) . "\n";
 873                         foreach ( $nondefaults as $key => $value ) {
 874                                 $form .= Html::hidden( $key, $value ) . "\n";
 875                         }
 876                         $form .= Xml::closeElement( 'form' ) . "\n";
 877                 }
 878
 879                 $this->getOutput()->addHTML( $form );
 880         }
 881
 882         protected function showHideCheck( $options, $message, $name, $value, $inStructuredUi ) {
 883                 $options[$name] = 1 - (int)$value;
 884
 885                 $attribs = [ 'class' => 'mw-input-with-label clshowhideoption cloption' ];
 886                 if ( $inStructuredUi ) {
 887                         $attribs[ 'data-feature-in-structured-ui' ] = true;
 888                 }
 889
 890                 return Html::rawElement(
 891                         'span',
 892                         $attribs,
 893                         Xml::checkLabel(
 894                                 $this->msg( $message, '' )->text(),
 895                                 $name,
 896                                 $name,
 897                                 (int)$value
 898                         )
 899                 );
 900         }
 901
 902         /**
 903          * Count the number of paired items on a user's watchlist.
 904          * The assumption made here is that when a subject page is watched a talk page is also watched.
 905          * Hence the number of individual items is halved.
 906          *
 907          * @return int
 908          */
 909         protected function countItems() {
 910                 $store = MediaWikiServices::getInstance()->getWatchedItemStore();
 911                 $count = $store->countWatchedItems( $this->getUser() );
 912                 return floor( $count / 2 );
 913         }
 914
 915         function getDefaultLimit() {
 916                 return $this->getUser()->getIntOption( 'wllimit' );
 917         }
 918
 919         function getDefaultDays() {
 920                 return floatval( $this->getUser()->getOption( 'watchlistdays' ) );
 921         }
 922 }