includes/specials/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  * Implements Special:Recentchanges
   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\FakeResultWrapper;
  27
  28 /**
  29  * A special page that lists last changes made to the wiki
  30  *
  31  * @ingroup SpecialPage
  32  */
  33 class SpecialRecentChanges extends ChangesListSpecialPage {
  34
  35         protected static $savedQueriesPreferenceName = 'rcfilters-saved-queries';
  36         protected static $daysPreferenceName = 'rcdays'; // Use general RecentChanges preference
  37         protected static $limitPreferenceName = 'rcfilters-limit'; // Use RCFilters-specific preference
  38
  39         private $watchlistFilterGroupDefinition;
  40
  41         public function __construct( $name = 'Recentchanges', $restriction = '' ) {
  42                 parent::__construct( $name, $restriction );
  43
  44                 $this->watchlistFilterGroupDefinition = [
  45                         'name' => 'watchlist',
  46                         'title' => 'rcfilters-filtergroup-watchlist',
  47                         'class' => ChangesListStringOptionsFilterGroup::class,
  48                         'priority' => -9,
  49                         'isFullCoverage' => true,
  50                         'filters' => [
  51                                 [
  52                                         'name' => 'watched',
  53                                         'label' => 'rcfilters-filter-watchlist-watched-label',
  54                                         'description' => 'rcfilters-filter-watchlist-watched-description',
  55                                         'cssClassSuffix' => 'watched',
  56                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  57                                                 return $rc->getAttribute( 'wl_user' );
  58                                         }
  59                                 ],
  60                                 [
  61                                         'name' => 'watchednew',
  62                                         'label' => 'rcfilters-filter-watchlist-watchednew-label',
  63                                         'description' => 'rcfilters-filter-watchlist-watchednew-description',
  64                                         'cssClassSuffix' => 'watchednew',
  65                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  66                                                 return $rc->getAttribute( 'wl_user' ) &&
  67                                                         $rc->getAttribute( 'rc_timestamp' ) &&
  68                                                         $rc->getAttribute( 'wl_notificationtimestamp' ) &&
  69                                                         $rc->getAttribute( 'rc_timestamp' ) >= $rc->getAttribute( 'wl_notificationtimestamp' );
  70                                         },
  71                                 ],
  72                                 [
  73                                         'name' => 'notwatched',
  74                                         'label' => 'rcfilters-filter-watchlist-notwatched-label',
  75                                         'description' => 'rcfilters-filter-watchlist-notwatched-description',
  76                                         'cssClassSuffix' => 'notwatched',
  77                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  78                                                 return $rc->getAttribute( 'wl_user' ) === null;
  79                                         },
  80                                 ]
  81                         ],
  82                         'default' => ChangesListStringOptionsFilterGroup::NONE,
  83                         'queryCallable' => function ( $specialPageClassName, $context, $dbr,
  84                                 &$tables, &$fields, &$conds, &$query_options, &$join_conds, $selectedValues ) {
  85                                 sort( $selectedValues );
  86                                 $notwatchedCond = 'wl_user IS NULL';
  87                                 $watchedCond = 'wl_user IS NOT NULL';
  88                                 $newCond = 'rc_timestamp >= wl_notificationtimestamp';
  89
  90                                 if ( $selectedValues === [ 'notwatched' ] ) {
  91                                         $conds[] = $notwatchedCond;
  92                                         return;
  93                                 }
  94
  95                                 if ( $selectedValues === [ 'watched' ] ) {
  96                                         $conds[] = $watchedCond;
  97                                         return;
  98                                 }
  99
 100                                 if ( $selectedValues === [ 'watchednew' ] ) {
 101                                         $conds[] = $dbr->makeList( [
 102                                                 $watchedCond,
 103                                                 $newCond
 104                                         ], LIST_AND );
 105                                         return;
 106                                 }
 107
 108                                 if ( $selectedValues === [ 'notwatched', 'watched' ] ) {
 109                                         // no filters
 110                                         return;
 111                                 }
 112
 113                                 if ( $selectedValues === [ 'notwatched', 'watchednew' ] ) {
 114                                         $conds[] = $dbr->makeList( [
 115                                                 $notwatchedCond,
 116                                                 $dbr->makeList( [
 117                                                         $watchedCond,
 118                                                         $newCond
 119                                                 ], LIST_AND )
 120                                         ], LIST_OR );
 121                                         return;
 122                                 }
 123
 124                                 if ( $selectedValues === [ 'watched', 'watchednew' ] ) {
 125                                         $conds[] = $watchedCond;
 126                                         return;
 127                                 }
 128
 129                                 if ( $selectedValues === [ 'notwatched', 'watched', 'watchednew' ] ) {
 130                                         // no filters
 131                                         return;
 132                                 }
 133                         }
 134                 ];
 135         }
 136
 137         /**
 138          * Main execution point
 139          *
 140          * @param string $subpage
 141          */
 142         public function execute( $subpage ) {
 143                 // Backwards-compatibility: redirect to new feed URLs
 144                 $feedFormat = $this->getRequest()->getVal( 'feed' );
 145                 if ( !$this->including() && $feedFormat ) {
 146                         $query = $this->getFeedQuery();
 147                         $query['feedformat'] = $feedFormat === 'atom' ? 'atom' : 'rss';
 148                         $this->getOutput()->redirect( wfAppendQuery( wfScript( 'api' ), $query ) );
 149
 150                         return;
 151                 }
 152
 153                 // 10 seconds server-side caching max
 154                 $out = $this->getOutput();
 155                 $out->setCdnMaxage( 10 );
 156                 // Check if the client has a cached version
 157                 $lastmod = $this->checkLastModified();
 158                 if ( $lastmod === false ) {
 159                         return;
 160                 }
 161
 162                 $this->addHelpLink(
 163                         '//meta.wikimedia.org/wiki/Special:MyLanguage/Help:Recent_changes',
 164                         true
 165                 );
 166                 parent::execute( $subpage );
 167         }
 168
 169         /**
 170          * @inheritDoc
 171          */
 172         protected function transformFilterDefinition( array $filterDefinition ) {
 173                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 174                         $filterDefinition['showHide'] = 'rc' . $filterDefinition['showHideSuffix'];
 175                 }
 176
 177                 return $filterDefinition;
 178         }
 179
 180         /**
 181          * @inheritDoc
 182          */
 183         protected function registerFilters() {
 184                 parent::registerFilters();
 185
 186                 if (
 187                         !$this->including() &&
 188                         $this->getUser()->isLoggedIn() &&
 189                         $this->getUser()->isAllowed( 'viewmywatchlist' )
 190                 ) {
 191                         $this->registerFiltersFromDefinitions( [ $this->watchlistFilterGroupDefinition ] );
 192                         $watchlistGroup = $this->getFilterGroup( 'watchlist' );
 193                         $watchlistGroup->getFilter( 'watched' )->setAsSupersetOf(
 194                                 $watchlistGroup->getFilter( 'watchednew' )
 195                         );
 196                 }
 197
 198                 $user = $this->getUser();
 199
 200                 $significance = $this->getFilterGroup( 'significance' );
 201                 $hideMinor = $significance->getFilter( 'hideminor' );
 202                 $hideMinor->setDefault( $user->getBoolOption( 'hideminor' ) );
 203
 204                 $automated = $this->getFilterGroup( 'automated' );
 205                 $hideBots = $automated->getFilter( 'hidebots' );
 206                 $hideBots->setDefault( true );
 207
 208                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 209                 if ( $reviewStatus !== null ) {
 210                         // Conditional on feature being available and rights
 211                         $hidePatrolled = $reviewStatus->getFilter( 'hidepatrolled' );
 212                         $hidePatrolled->setDefault( $user->getBoolOption( 'hidepatrolled' ) );
 213                 }
 214
 215                 $changeType = $this->getFilterGroup( 'changeType' );
 216                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 217                 if ( $hideCategorization !== null ) {
 218                         // Conditional on feature being available
 219                         $hideCategorization->setDefault( $user->getBoolOption( 'hidecategorization' ) );
 220                 }
 221         }
 222
 223         /**
 224          * Get all custom filters
 225          *
 226          * @return array Map of filter URL param names to properties (msg/default)
 227          */
 228         protected function getCustomFilters() {
 229                 if ( $this->customFilters === null ) {
 230                         $this->customFilters = parent::getCustomFilters();
 231                         Hooks::run( 'SpecialRecentChangesFilters', [ $this, &$this->customFilters ], '1.23' );
 232                 }
 233
 234                 return $this->customFilters;
 235         }
 236
 237         /**
 238          * Process $par and put options found in $opts. Used when including the page.
 239          *
 240          * @param string $par
 241          * @param FormOptions $opts
 242          */
 243         public function parseParameters( $par, FormOptions $opts ) {
 244                 parent::parseParameters( $par, $opts );
 245
 246                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 247                 foreach ( $bits as $bit ) {
 248                         if ( is_numeric( $bit ) ) {
 249                                 $opts['limit'] = $bit;
 250                         }
 251
 252                         $m = [];
 253                         if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 254                                 $opts['limit'] = $m[1];
 255                         }
 256                         if ( preg_match( '/^days=(\d+(?:\.\d+)?)$/', $bit, $m ) ) {
 257                                 $opts['days'] = $m[1];
 258                         }
 259                         if ( preg_match( '/^namespace=(.*)$/', $bit, $m ) ) {
 260                                 $opts['namespace'] = $m[1];
 261                         }
 262                         if ( preg_match( '/^tagfilter=(.*)$/', $bit, $m ) ) {
 263                                 $opts['tagfilter'] = $m[1];
 264                         }
 265                 }
 266         }
 267
 268         /**
 269          * @inheritDoc
 270          */
 271         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 272                 $join_conds, FormOptions $opts
 273         ) {
 274                 $dbr = $this->getDB();
 275                 $user = $this->getUser();
 276
 277                 $rcQuery = RecentChange::getQueryInfo();
 278                 $tables = array_merge( $tables, $rcQuery['tables'] );
 279                 $fields = array_merge( $rcQuery['fields'], $fields );
 280                 $join_conds = array_merge( $join_conds, $rcQuery['joins'] );
 281
 282                 // JOIN on watchlist for users
 283                 if ( $user->isLoggedIn() && $user->isAllowed( 'viewmywatchlist' ) ) {
 284                         $tables[] = 'watchlist';
 285                         $fields[] = 'wl_user';
 286                         $fields[] = 'wl_notificationtimestamp';
 287                         $join_conds['watchlist'] = [ 'LEFT JOIN', [
 288                                 'wl_user' => $user->getId(),
 289                                 'wl_title=rc_title',
 290                                 'wl_namespace=rc_namespace'
 291                         ] ];
 292                 }
 293
 294                 // JOIN on page, used for 'last revision' filter highlight
 295                 $tables[] = 'page';
 296                 $fields[] = 'page_latest';
 297                 $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 298
 299                 $tagFilter = $opts['tagfilter'] ? explode( '|', $opts['tagfilter'] ) : [];
 300                 ChangeTags::modifyDisplayQuery(
 301                         $tables,
 302                         $fields,
 303                         $conds,
 304                         $join_conds,
 305                         $query_options,
 306                         $tagFilter
 307                 );
 308
 309                 if ( !$this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds,
 310                         $opts )
 311                 ) {
 312                         return false;
 313                 }
 314
 315                 if ( $this->areFiltersInConflict() ) {
 316                         return false;
 317                 }
 318
 319                 $orderByAndLimit = [
 320                         'ORDER BY' => 'rc_timestamp DESC',
 321                         'LIMIT' => $opts['limit']
 322                 ];
 323                 if ( in_array( 'DISTINCT', $query_options ) ) {
 324                         // ChangeTags::modifyDisplayQuery() adds DISTINCT when filtering on multiple tags.
 325                         // In order to prevent DISTINCT from causing query performance problems,
 326                         // we have to GROUP BY the primary key. This in turn requires us to add
 327                         // the primary key to the end of the ORDER BY, and the old ORDER BY to the
 328                         // start of the GROUP BY
 329                         $orderByAndLimit['ORDER BY'] = 'rc_timestamp DESC, rc_id DESC';
 330                         $orderByAndLimit['GROUP BY'] = 'rc_timestamp, rc_id';
 331                 }
 332                 // array_merge() is used intentionally here so that hooks can, should
 333                 // they so desire, override the ORDER BY / LIMIT condition(s); prior to
 334                 // MediaWiki 1.26 this used to use the plus operator instead, which meant
 335                 // that extensions weren't able to change these conditions
 336                 $query_options = array_merge( $orderByAndLimit, $query_options );
 337                 $rows = $dbr->select(
 338                         $tables,
 339                         $fields,
 340                         // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
 341                         // knowledge to use an index merge if it wants (it may use some other index though).
 342                         $conds + [ 'rc_new' => [ 0, 1 ] ],
 343                         __METHOD__,
 344                         $query_options,
 345                         $join_conds
 346                 );
 347
 348                 return $rows;
 349         }
 350
 351         protected function runMainQueryHook( &$tables, &$fields, &$conds,
 352                 &$query_options, &$join_conds, $opts
 353         ) {
 354                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 355                         && Hooks::run(
 356                                 'SpecialRecentChangesQuery',
 357                                 [ &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ],
 358                                 '1.23'
 359                         );
 360         }
 361
 362         protected function getDB() {
 363                 return wfGetDB( DB_REPLICA, 'recentchanges' );
 364         }
 365
 366         public function outputFeedLinks() {
 367                 $this->addFeedLinks( $this->getFeedQuery() );
 368         }
 369
 370         /**
 371          * Get URL query parameters for action=feedrecentchanges API feed of current recent changes view.
 372          *
 373          * @return array
 374          */
 375         protected function getFeedQuery() {
 376                 $query = array_filter( $this->getOptions()->getAllValues(), function ( $value ) {
 377                         // API handles empty parameters in a different way
 378                         return $value !== '';
 379                 } );
 380                 $query['action'] = 'feedrecentchanges';
 381                 $feedLimit = $this->getConfig()->get( 'FeedLimit' );
 382                 if ( $query['limit'] > $feedLimit ) {
 383                         $query['limit'] = $feedLimit;
 384                 }
 385
 386                 return $query;
 387         }
 388
 389         /**
 390          * Build and output the actual changes list.
 391          *
 392          * @param ResultWrapper $rows Database rows
 393          * @param FormOptions $opts
 394          */
 395         public function outputChangesList( $rows, $opts ) {
 396                 $limit = $opts['limit'];
 397
 398                 $showWatcherCount = $this->getConfig()->get( 'RCShowWatchingUsers' )
 399                         && $this->getUser()->getOption( 'shownumberswatching' );
 400                 $watcherCache = [];
 401
 402                 $counter = 1;
 403                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 404                 $list->initChangesListRows( $rows );
 405
 406                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 407                 $rclistOutput = $list->beginRecentChangesList();
 408                 if ( $this->isStructuredFilterUiEnabled() ) {
 409                         $rclistOutput .= $this->makeLegend();
 410                 }
 411
 412                 foreach ( $rows as $obj ) {
 413                         if ( $limit == 0 ) {
 414                                 break;
 415                         }
 416                         $rc = RecentChange::newFromRow( $obj );
 417
 418                         # Skip CatWatch entries for hidden cats based on user preference
 419                         if (
 420                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 421                                 !$userShowHiddenCats &&
 422                                 $rc->getParam( 'hidden-cat' )
 423                         ) {
 424                                 continue;
 425                         }
 426
 427                         $rc->counter = $counter++;
 428                         # Check if the page has been updated since the last visit
 429                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' )
 430                                 && !empty( $obj->wl_notificationtimestamp )
 431                         ) {
 432                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 433                         } else {
 434                                 $rc->notificationtimestamp = false; // Default
 435                         }
 436                         # Check the number of users watching the page
 437                         $rc->numberofWatchingusers = 0; // Default
 438                         if ( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 439                                 if ( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 440                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 441                                                 MediaWikiServices::getInstance()->getWatchedItemStore()->countWatchers(
 442                                                         new TitleValue( (int)$obj->rc_namespace, $obj->rc_title )
 443                                                 );
 444                                 }
 445                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 446                         }
 447
 448                         $changeLine = $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 449                         if ( $changeLine !== false ) {
 450                                 $rclistOutput .= $changeLine;
 451                                 --$limit;
 452                         }
 453                 }
 454                 $rclistOutput .= $list->endRecentChangesList();
 455
 456                 if ( $rows->numRows() === 0 ) {
 457                         $this->outputNoResults();
 458                         if ( !$this->including() ) {
 459                                 $this->getOutput()->setStatusCode( 404 );
 460                         }
 461                 } else {
 462                         $this->getOutput()->addHTML( $rclistOutput );
 463                 }
 464         }
 465
 466         /**
 467          * Set the text to be displayed above the changes
 468          *
 469          * @param FormOptions $opts
 470          * @param int $numRows Number of rows in the result to show after this header
 471          */
 472         public function doHeader( $opts, $numRows ) {
 473                 $this->setTopText( $opts );
 474
 475                 $defaults = $opts->getAllValues();
 476                 $nondefaults = $opts->getChangedValues();
 477
 478                 $panel = [];
 479                 if ( !$this->isStructuredFilterUiEnabled() ) {
 480                         $panel[] = $this->makeLegend();
 481                 }
 482                 $panel[] = $this->optionsPanel( $defaults, $nondefaults, $numRows );
 483                 $panel[] = '<hr />';
 484
 485                 $extraOpts = $this->getExtraOptions( $opts );
 486                 $extraOptsCount = count( $extraOpts );
 487                 $count = 0;
 488                 $submit = ' ' . Xml::submitButton( $this->msg( 'recentchanges-submit' )->text() );
 489
 490                 $out = Xml::openElement( 'table', [ 'class' => 'mw-recentchanges-table' ] );
 491                 foreach ( $extraOpts as $name => $optionRow ) {
 492                         # Add submit button to the last row only
 493                         ++$count;
 494                         $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';
 495
 496                         $out .= Xml::openElement( 'tr', [ 'class' => $name . 'Form' ] );
 497                         if ( is_array( $optionRow ) ) {
 498                                 $out .= Xml::tags(
 499                                         'td',
 500                                         [ 'class' => 'mw-label mw-' . $name . '-label' ],
 501                                         $optionRow[0]
 502                                 );
 503                                 $out .= Xml::tags(
 504                                         'td',
 505                                         [ 'class' => 'mw-input' ],
 506                                         $optionRow[1] . $addSubmit
 507                                 );
 508                         } else {
 509                                 $out .= Xml::tags(
 510                                         'td',
 511                                         [ 'class' => 'mw-input', 'colspan' => 2 ],
 512                                         $optionRow . $addSubmit
 513                                 );
 514                         }
 515                         $out .= Xml::closeElement( 'tr' );
 516                 }
 517                 $out .= Xml::closeElement( 'table' );
 518
 519                 $unconsumed = $opts->getUnconsumedValues();
 520                 foreach ( $unconsumed as $key => $value ) {
 521                         $out .= Html::hidden( $key, $value );
 522                 }
 523
 524                 $t = $this->getPageTitle();
 525                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 526                 $form = Xml::tags( 'form', [ 'action' => wfScript() ], $out );
 527                 $panel[] = $form;
 528                 $panelString = implode( "\n", $panel );
 529
 530                 $rcoptions = Xml::fieldset(
 531                         $this->msg( 'recentchanges-legend' )->text(),
 532                         $panelString,
 533                         [ 'class' => 'rcoptions cloptions' ]
 534                 );
 535
 536                 // Insert a placeholder for RCFilters
 537                 if ( $this->isStructuredFilterUiEnabled() ) {
 538                         $rcfilterContainer = Html::element(
 539                                 'div',
 540                                 [ 'class' => 'rcfilters-container' ]
 541                         );
 542
 543                         $loadingContainer = Html::rawElement(
 544                                 'div',
 545                                 [ 'class' => 'rcfilters-spinner' ],
 546                                 Html::element(
 547                                         'div',
 548                                         [ 'class' => 'rcfilters-spinner-bounce' ]
 549                                 )
 550                         );
 551
 552                         // Wrap both with rcfilters-head
 553                         $this->getOutput()->addHTML(
 554                                 Html::rawElement(
 555                                         'div',
 556                                         [ 'class' => 'rcfilters-head' ],
 557                                         $rcfilterContainer . $rcoptions
 558                                 )
 559                         );
 560
 561                         // Add spinner
 562                         $this->getOutput()->addHTML( $loadingContainer );
 563                 } else {
 564                         $this->getOutput()->addHTML( $rcoptions );
 565                 }
 566
 567                 $this->setBottomText( $opts );
 568         }
 569
 570         /**
 571          * Send the text to be displayed above the options
 572          *
 573          * @param FormOptions $opts Unused
 574          */
 575         function setTopText( FormOptions $opts ) {
 576                 global $wgContLang;
 577
 578                 $message = $this->msg( 'recentchangestext' )->inContentLanguage();
 579                 if ( !$message->isDisabled() ) {
 580                         // Parse the message in this weird ugly way to preserve the ability to include interlanguage
 581                         // links in it (T172461). In the future when T66969 is resolved, perhaps we can just use
 582                         // $message->parse() instead. This code is copied from Message::parseText().
 583                         $parserOutput = MessageCache::singleton()->parse(
 584                                 $message->plain(),
 585                                 $this->getPageTitle(),
 586                                 /*linestart*/true,
 587                                 // Message class sets the interface flag to false when parsing in a language different than
 588                                 // user language, and this is wiki content language
 589                                 /*interface*/false,
 590                                 $wgContLang
 591                         );
 592                         $content = $parserOutput->getText( [
 593                                 'enableSectionEditLinks' => false,
 594                         ] );
 595                         // Add only metadata here (including the language links), text is added below
 596                         $this->getOutput()->addParserOutputMetadata( $parserOutput );
 597
 598                         $langAttributes = [
 599                                 'lang' => $wgContLang->getHtmlCode(),
 600                                 'dir' => $wgContLang->getDir(),
 601                         ];
 602
 603                         $topLinksAttributes = [ 'class' => 'mw-recentchanges-toplinks' ];
 604
 605                         if ( $this->isStructuredFilterUiEnabled() ) {
 606                                 // Check whether the widget is already collapsed or expanded
 607                                 $collapsedState = $this->getRequest()->getCookie( 'rcfilters-toplinks-collapsed-state' );
 608                                 // Note that an empty/unset cookie means collapsed, so check for !== 'expanded'
 609                                 $topLinksAttributes[ 'class' ] .= $collapsedState !== 'expanded' ?
 610                                         ' mw-recentchanges-toplinks-collapsed' : '';
 611
 612                                 $this->getOutput()->enableOOUI();
 613                                 $contentTitle = new OOUI\ButtonWidget( [
 614                                         'classes' => [ 'mw-recentchanges-toplinks-title' ],
 615                                         'label' => new OOUI\HtmlSnippet( $this->msg( 'rcfilters-other-review-tools' )->parse() ),
 616                                         'framed' => false,
 617                                         'indicator' => $collapsedState !== 'expanded' ? 'down' : 'up',
 618                                         'flags' => [ 'progressive' ],
 619                                 ] );
 620
 621                                 $contentWrapper = Html::rawElement( 'div',
 622                                         array_merge(
 623                                                 [ 'class' => 'mw-recentchanges-toplinks-content mw-collapsible-content' ],
 624                                                 $langAttributes
 625                                         ),
 626                                         $content
 627                                 );
 628                                 $content = $contentTitle . $contentWrapper;
 629                         } else {
 630                                 // Language direction should be on the top div only
 631                                 // if the title is not there. If it is there, it's
 632                                 // interface direction, and the language/dir attributes
 633                                 // should be on the content itself
 634                                 $topLinksAttributes = array_merge( $topLinksAttributes, $langAttributes );
 635                         }
 636
 637                         $this->getOutput()->addHTML(
 638                                 Html::rawElement( 'div', $topLinksAttributes, $content )
 639                         );
 640                 }
 641         }
 642
 643         /**
 644          * Get options to be displayed in a form
 645          *
 646          * @param FormOptions $opts
 647          * @return array
 648          */
 649         function getExtraOptions( $opts ) {
 650                 $opts->consumeValues( [
 651                         'namespace', 'invert', 'associated', 'tagfilter'
 652                 ] );
 653
 654                 $extraOpts = [];
 655                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 656
 657                 $tagFilter = ChangeTags::buildTagFilterSelector(
 658                         $opts['tagfilter'], false, $this->getContext() );
 659                 if ( count( $tagFilter ) ) {
 660                         $extraOpts['tagfilter'] = $tagFilter;
 661                 }
 662
 663                 // Don't fire the hook for subclasses. (Or should we?)
 664                 if ( $this->getName() === 'Recentchanges' ) {
 665                         Hooks::run( 'SpecialRecentChangesPanel', [ &$extraOpts, $opts ] );
 666                 }
 667
 668                 return $extraOpts;
 669         }
 670
 671         /**
 672          * Add page-specific modules.
 673          */
 674         protected function addModules() {
 675                 parent::addModules();
 676                 $out = $this->getOutput();
 677                 $out->addModules( 'mediawiki.special.recentchanges' );
 678         }
 679
 680         /**
 681          * Get last modified date, for client caching
 682          * Don't use this if we are using the patrol feature, patrol changes don't
 683          * update the timestamp
 684          *
 685          * @return string|bool
 686          */
 687         public function checkLastModified() {
 688                 $dbr = $this->getDB();
 689                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', '', __METHOD__ );
 690
 691                 return $lastmod;
 692         }
 693
 694         /**
 695          * Creates the choose namespace selection
 696          *
 697          * @param FormOptions $opts
 698          * @return string
 699          */
 700         protected function namespaceFilterForm( FormOptions $opts ) {
 701                 $nsSelect = Html::namespaceSelector(
 702                         [ 'selected' => $opts['namespace'], 'all' => '' ],
 703                         [ 'name' => 'namespace', 'id' => 'namespace' ]
 704                 );
 705                 $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
 706                 $invert = Xml::checkLabel(
 707                         $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
 708                         $opts['invert'],
 709                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 710                 );
 711                 $associated = Xml::checkLabel(
 712                         $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
 713                         $opts['associated'],
 714                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 715                 );
 716
 717                 return [ $nsLabel, "$nsSelect $invert $associated" ];
 718         }
 719
 720         /**
 721          * Filter $rows by categories set in $opts
 722          *
 723          * @deprecated since 1.31
 724          *
 725          * @param ResultWrapper &$rows Database rows
 726          * @param FormOptions $opts
 727          */
 728         function filterByCategories( &$rows, FormOptions $opts ) {
 729                 wfDeprecated( __METHOD__, '1.31' );
 730
 731                 $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );
 732
 733                 if ( !count( $categories ) ) {
 734                         return;
 735                 }
 736
 737                 # Filter categories
 738                 $cats = [];
 739                 foreach ( $categories as $cat ) {
 740                         $cat = trim( $cat );
 741                         if ( $cat == '' ) {
 742                                 continue;
 743                         }
 744                         $cats[] = $cat;
 745                 }
 746
 747                 # Filter articles
 748                 $articles = [];
 749                 $a2r = [];
 750                 $rowsarr = [];
 751                 foreach ( $rows as $k => $r ) {
 752                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 753                         $id = $nt->getArticleID();
 754                         if ( $id == 0 ) {
 755                                 continue; # Page might have been deleted...
 756                         }
 757                         if ( !in_array( $id, $articles ) ) {
 758                                 $articles[] = $id;
 759                         }
 760                         if ( !isset( $a2r[$id] ) ) {
 761                                 $a2r[$id] = [];
 762                         }
 763                         $a2r[$id][] = $k;
 764                         $rowsarr[$k] = $r;
 765                 }
 766
 767                 # Shortcut?
 768                 if ( !count( $articles ) || !count( $cats ) ) {
 769                         return;
 770                 }
 771
 772                 # Look up
 773                 $catFind = new CategoryFinder;
 774                 $catFind->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 775                 $match = $catFind->run();
 776
 777                 # Filter
 778                 $newrows = [];
 779                 foreach ( $match as $id ) {
 780                         foreach ( $a2r[$id] as $rev ) {
 781                                 $k = $rev;
 782                                 $newrows[$k] = $rowsarr[$k];
 783                         }
 784                 }
 785                 $rows = new FakeResultWrapper( array_values( $newrows ) );
 786         }
 787
 788         /**
 789          * Makes change an option link which carries all the other options
 790          *
 791          * @param string $title
 792          * @param array $override Options to override
 793          * @param array $options Current options
 794          * @param bool $active Whether to show the link in bold
 795          * @return string
 796          */
 797         function makeOptionsLink( $title, $override, $options, $active = false ) {
 798                 $params = $this->convertParamsForLink( $override + $options );
 799
 800                 if ( $active ) {
 801                         $title = new HtmlArmor( '<strong>' . htmlspecialchars( $title ) . '</strong>' );
 802                 }
 803
 804                 return $this->getLinkRenderer()->makeKnownLink( $this->getPageTitle(), $title, [
 805                         'data-params' => json_encode( $override ),
 806                         'data-keys' => implode( ',', array_keys( $override ) ),
 807                 ], $params );
 808         }
 809
 810         /**
 811          * Creates the options panel.
 812          *
 813          * @param array $defaults
 814          * @param array $nondefaults
 815          * @param int $numRows Number of rows in the result to show after this header
 816          * @return string
 817          */
 818         function optionsPanel( $defaults, $nondefaults, $numRows ) {
 819                 $options = $nondefaults + $defaults;
 820
 821                 $note = '';
 822                 $msg = $this->msg( 'rclegend' );
 823                 if ( !$msg->isDisabled() ) {
 824                         $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
 825                 }
 826
 827                 $lang = $this->getLanguage();
 828                 $user = $this->getUser();
 829                 $config = $this->getConfig();
 830                 if ( $options['from'] ) {
 831                         $resetLink = $this->makeOptionsLink( $this->msg( 'rclistfromreset' ),
 832                                 [ 'from' => '' ], $nondefaults );
 833
 834                         $noteFromMsg = $this->msg( 'rcnotefrom' )
 835                                 ->numParams( $options['limit'] )
 836                                 ->params(
 837                                         $lang->userTimeAndDate( $options['from'], $user ),
 838                                         $lang->userDate( $options['from'], $user ),
 839                                         $lang->userTime( $options['from'], $user )
 840                                 )
 841                                 ->numParams( $numRows );
 842                         $note .= Html::rawElement(
 843                                         'span',
 844                                         [ 'class' => 'rcnotefrom' ],
 845                                         $noteFromMsg->parse()
 846                                 ) .
 847                                 ' ' .
 848                                 Html::rawElement(
 849                                         'span',
 850                                         [ 'class' => 'rcoptions-listfromreset' ],
 851                                         $this->msg( 'parentheses' )->rawParams( $resetLink )->parse()
 852                                 ) .
 853                                 '<br />';
 854                 }
 855
 856                 # Sort data for display and make sure it's unique after we've added user data.
 857                 $linkLimits = $config->get( 'RCLinkLimits' );
 858                 $linkLimits[] = $options['limit'];
 859                 sort( $linkLimits );
 860                 $linkLimits = array_unique( $linkLimits );
 861
 862                 $linkDays = $config->get( 'RCLinkDays' );
 863                 $linkDays[] = $options['days'];
 864                 sort( $linkDays );
 865                 $linkDays = array_unique( $linkDays );
 866
 867                 // limit links
 868                 $cl = [];
 869                 foreach ( $linkLimits as $value ) {
 870                         $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 871                                 [ 'limit' => $value ], $nondefaults, $value == $options['limit'] );
 872                 }
 873                 $cl = $lang->pipeList( $cl );
 874
 875                 // day links, reset 'from' to none
 876                 $dl = [];
 877                 foreach ( $linkDays as $value ) {
 878                         $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 879                                 [ 'days' => $value, 'from' => '' ], $nondefaults, $value == $options['days'] );
 880                 }
 881                 $dl = $lang->pipeList( $dl );
 882
 883                 $showhide = [ 'show', 'hide' ];
 884
 885                 $links = [];
 886
 887                 foreach ( $this->getLegacyShowHideFilters() as $key => $filter ) {
 888                         $msg = $filter->getShowHide();
 889                         $linkMessage = $this->msg( $msg . '-' . $showhide[1 - $options[$key]] );
 890                         // Extensions can define additional filters, but don't need to define the corresponding
 891                         // messages. If they don't exist, just fall back to 'show' and 'hide'.
 892                         if ( !$linkMessage->exists() ) {
 893                                 $linkMessage = $this->msg( $showhide[1 - $options[$key]] );
 894                         }
 895
 896                         $link = $this->makeOptionsLink( $linkMessage->text(),
 897                                 [ $key => 1 - $options[$key] ], $nondefaults );
 898
 899                         $attribs = [
 900                                 'class' => "$msg rcshowhideoption clshowhideoption",
 901                                 'data-filter-name' => $filter->getName(),
 902                         ];
 903
 904                         if ( $filter->isFeatureAvailableOnStructuredUi( $this ) ) {
 905                                 $attribs['data-feature-in-structured-ui'] = true;
 906                         }
 907
 908                         $links[] = Html::rawElement(
 909                                 'span',
 910                                 $attribs,
 911                                 $this->msg( $msg )->rawParams( $link )->parse()
 912                         );
 913                 }
 914
 915                 // show from this onward link
 916                 $timestamp = wfTimestampNow();
 917                 $now = $lang->userTimeAndDate( $timestamp, $user );
 918                 $timenow = $lang->userTime( $timestamp, $user );
 919                 $datenow = $lang->userDate( $timestamp, $user );
 920                 $pipedLinks = '<span class="rcshowhide">' . $lang->pipeList( $links ) . '</span>';
 921
 922                 $rclinks = '<span class="rclinks">' . $this->msg( 'rclinks' )->rawParams( $cl, $dl, '' )
 923                         ->parse() . '</span>';
 924
 925                 $rclistfrom = '<span class="rclistfrom">' . $this->makeOptionsLink(
 926                         $this->msg( 'rclistfrom' )->rawParams( $now, $timenow, $datenow )->parse(),
 927                         [ 'from' => $timestamp ],
 928                         $nondefaults
 929                 ) . '</span>';
 930
 931                 return "{$note}$rclinks<br />$pipedLinks<br />$rclistfrom";
 932         }
 933
 934         public function isIncludable() {
 935                 return true;
 936         }
 937
 938         protected function getCacheTTL() {
 939                 return 60 * 5;
 940         }
 941
 942         public function getDefaultLimit() {
 943                 $systemPrefValue = $this->getUser()->getIntOption( 'rclimit' );
 944                 // Prefer the RCFilters-specific preference if RCFilters is enabled
 945                 if ( $this->isStructuredFilterUiEnabled() ) {
 946                         return $this->getUser()->getIntOption( static::$limitPreferenceName, $systemPrefValue );
 947                 }
 948
 949                 // Otherwise, use the system rclimit preference value
 950                 return $systemPrefValue;
 951         }
 952 }