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         private $watchlistFilterGroupDefinition;
  36
  37         // @codingStandardsIgnoreStart Needed "useless" override to change parameters.
  38         public function __construct( $name = 'Recentchanges', $restriction = '' ) {
  39                 parent::__construct( $name, $restriction );
  40
  41                 $this->watchlistFilterGroupDefinition = [
  42                         'name' => 'watchlist',
  43                         'title' => 'rcfilters-filtergroup-watchlist',
  44                         'class' => ChangesListStringOptionsFilterGroup::class,
  45                         'priority' => -9,
  46                         'isFullCoverage' => true,
  47                         'filters' => [
  48                                 [
  49                                         'name' => 'watched',
  50                                         'label' => 'rcfilters-filter-watchlist-watched-label',
  51                                         'description' => 'rcfilters-filter-watchlist-watched-description',
  52                                         'cssClassSuffix' => 'watched',
  53                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  54                                                 return $rc->getAttribute( 'wl_user' );
  55                                         }
  56                                 ],
  57                                 [
  58                                         'name' => 'watchednew',
  59                                         'label' => 'rcfilters-filter-watchlist-watchednew-label',
  60                                         'description' => 'rcfilters-filter-watchlist-watchednew-description',
  61                                         'cssClassSuffix' => 'watchednew',
  62                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  63                                                 return $rc->getAttribute( 'wl_user' ) &&
  64                                                         $rc->getAttribute( 'rc_timestamp' ) &&
  65                                                         $rc->getAttribute( 'wl_notificationtimestamp' ) &&
  66                                                         $rc->getAttribute( 'rc_timestamp' ) >= $rc->getAttribute( 'wl_notificationtimestamp' );
  67                                         },
  68                                 ],
  69                                 [
  70                                         'name' => 'notwatched',
  71                                         'label' => 'rcfilters-filter-watchlist-notwatched-label',
  72                                         'description' => 'rcfilters-filter-watchlist-notwatched-description',
  73                                         'cssClassSuffix' => 'notwatched',
  74                                         'isRowApplicableCallable' => function ( $ctx, $rc ) {
  75                                                 return $rc->getAttribute( 'wl_user' ) === null;
  76                                         },
  77                                 ]
  78                         ],
  79                         'default' => ChangesListStringOptionsFilterGroup::NONE,
  80                         'queryCallable' => function ( $specialPageClassName, $context, $dbr,
  81                                 &$tables, &$fields, &$conds, &$query_options, &$join_conds, $selectedValues ) {
  82                                 sort( $selectedValues );
  83                                 $notwatchedCond = 'wl_user IS NULL';
  84                                 $watchedCond = 'wl_user IS NOT NULL';
  85                                 $newCond = 'rc_timestamp >= wl_notificationtimestamp';
  86
  87                                 if ( $selectedValues === [ 'notwatched' ] ) {
  88                                         $conds[] = $notwatchedCond;
  89                                         return;
  90                                 }
  91
  92                                 if ( $selectedValues === [ 'watched' ] ) {
  93                                         $conds[] = $watchedCond;
  94                                         return;
  95                                 }
  96
  97                                 if ( $selectedValues === [ 'watchednew' ] ) {
  98                                         $conds[] = $dbr->makeList( [
  99                                                 $watchedCond,
 100                                                 $newCond
 101                                         ], LIST_AND );
 102                                         return;
 103                                 }
 104
 105                                 if ( $selectedValues === [ 'notwatched', 'watched' ] ) {
 106                                         // no filters
 107                                         return;
 108                                 }
 109
 110                                 if ( $selectedValues === [ 'notwatched', 'watchednew' ] ) {
 111                                         $conds[] = $dbr->makeList( [
 112                                                 $notwatchedCond,
 113                                                 $dbr->makeList( [
 114                                                         $watchedCond,
 115                                                         $newCond
 116                                                 ], LIST_AND )
 117                                         ], LIST_OR );
 118                                         return;
 119                                 }
 120
 121                                 if ( $selectedValues === [ 'watched', 'watchednew' ] ) {
 122                                         $conds[] = $watchedCond;
 123                                         return;
 124                                 }
 125
 126                                 if ( $selectedValues === [ 'notwatched', 'watched', 'watchednew' ] ) {
 127                                         // no filters
 128                                         return;
 129                                 }
 130                         }
 131                 ];
 132         }
 133         // @codingStandardsIgnoreEnd
 134
 135         /**
 136          * Main execution point
 137          *
 138          * @param string $subpage
 139          */
 140         public function execute( $subpage ) {
 141                 // Backwards-compatibility: redirect to new feed URLs
 142                 $feedFormat = $this->getRequest()->getVal( 'feed' );
 143                 if ( !$this->including() && $feedFormat ) {
 144                         $query = $this->getFeedQuery();
 145                         $query['feedformat'] = $feedFormat === 'atom' ? 'atom' : 'rss';
 146                         $this->getOutput()->redirect( wfAppendQuery( wfScript( 'api' ), $query ) );
 147
 148                         return;
 149                 }
 150
 151                 // 10 seconds server-side caching max
 152                 $out = $this->getOutput();
 153                 $out->setCdnMaxage( 10 );
 154                 // Check if the client has a cached version
 155                 $lastmod = $this->checkLastModified();
 156                 if ( $lastmod === false ) {
 157                         return;
 158                 }
 159
 160                 $this->addHelpLink(
 161                         '//meta.wikimedia.org/wiki/Special:MyLanguage/Help:Recent_changes',
 162                         true
 163                 );
 164                 parent::execute( $subpage );
 165
 166                 if ( $this->isStructuredFilterUiEnabled() ) {
 167                         $jsData = $this->getStructuredFilterJsData();
 168
 169                         $messages = [];
 170                         foreach ( $jsData['messageKeys'] as $key ){
 171                                 $messages[$key] = $this->msg( $key )->plain();
 172                         }
 173
 174                         $out->addHTML(
 175                                 ResourceLoader::makeInlineScript(
 176                                         ResourceLoader::makeMessageSetScript( $messages )
 177                                 )
 178                         );
 179
 180                         $out->addJsConfigVars( 'wgStructuredChangeFilters', $jsData['groups'] );
 181                 }
 182         }
 183
 184         /**
 185          * @inheritdoc
 186          */
 187         protected function transformFilterDefinition( array $filterDefinition ) {
 188                 if ( isset( $filterDefinition['showHideSuffix'] ) ) {
 189                         $filterDefinition['showHide'] = 'rc' . $filterDefinition['showHideSuffix'];
 190                 }
 191
 192                 return $filterDefinition;
 193         }
 194
 195         /**
 196          * @inheritdoc
 197          */
 198         protected function registerFilters() {
 199                 parent::registerFilters();
 200
 201                 if (
 202                         !$this->including() &&
 203                         $this->getUser()->isLoggedIn() &&
 204                         $this->getUser()->isAllowed( 'viewmywatchlist' )
 205                 ) {
 206                         $this->registerFiltersFromDefinitions( [ $this->watchlistFilterGroupDefinition ] );
 207                         $watchlistGroup = $this->getFilterGroup( 'watchlist' );
 208                         $watchlistGroup->getFilter( 'watched' )->setAsSupersetOf(
 209                                 $watchlistGroup->getFilter( 'watchednew' )
 210                         );
 211                 }
 212
 213                 $user = $this->getUser();
 214
 215                 $significance = $this->getFilterGroup( 'significance' );
 216                 $hideMinor = $significance->getFilter( 'hideminor' );
 217                 $hideMinor->setDefault( $user->getBoolOption( 'hideminor' ) );
 218
 219                 $automated = $this->getFilterGroup( 'automated' );
 220                 $hideBots = $automated->getFilter( 'hidebots' );
 221                 $hideBots->setDefault( true );
 222
 223                 $reviewStatus = $this->getFilterGroup( 'reviewStatus' );
 224                 if ( $reviewStatus !== null ) {
 225                         // Conditional on feature being available and rights
 226                         $hidePatrolled = $reviewStatus->getFilter( 'hidepatrolled' );
 227                         $hidePatrolled->setDefault( $user->getBoolOption( 'hidepatrolled' ) );
 228                 }
 229
 230                 $changeType = $this->getFilterGroup( 'changeType' );
 231                 $hideCategorization = $changeType->getFilter( 'hidecategorization' );
 232                 if ( $hideCategorization !== null ) {
 233                         // Conditional on feature being available
 234                         $hideCategorization->setDefault( $user->getBoolOption( 'hidecategorization' ) );
 235                 }
 236         }
 237
 238         /**
 239          * Get a FormOptions object containing the default options
 240          *
 241          * @return FormOptions
 242          */
 243         public function getDefaultOptions() {
 244                 $opts = parent::getDefaultOptions();
 245                 $user = $this->getUser();
 246
 247                 $opts->add( 'days', $user->getIntOption( 'rcdays' ) );
 248                 $opts->add( 'limit', $user->getIntOption( 'rclimit' ) );
 249                 $opts->add( 'from', '' );
 250
 251                 $opts->add( 'categories', '' );
 252                 $opts->add( 'categories_any', false );
 253                 $opts->add( 'tagfilter', '' );
 254
 255                 return $opts;
 256         }
 257
 258         /**
 259          * Get all custom filters
 260          *
 261          * @return array Map of filter URL param names to properties (msg/default)
 262          */
 263         protected function getCustomFilters() {
 264                 if ( $this->customFilters === null ) {
 265                         $this->customFilters = parent::getCustomFilters();
 266                         Hooks::run( 'SpecialRecentChangesFilters', [ $this, &$this->customFilters ], '1.23' );
 267                 }
 268
 269                 return $this->customFilters;
 270         }
 271
 272         /**
 273          * Process $par and put options found in $opts. Used when including the page.
 274          *
 275          * @param string $par
 276          * @param FormOptions $opts
 277          */
 278         public function parseParameters( $par, FormOptions $opts ) {
 279                 parent::parseParameters( $par, $opts );
 280
 281                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 282                 foreach ( $bits as $bit ) {
 283                         if ( is_numeric( $bit ) ) {
 284                                 $opts['limit'] = $bit;
 285                         }
 286
 287                         $m = [];
 288                         if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 289                                 $opts['limit'] = $m[1];
 290                         }
 291                         if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
 292                                 $opts['days'] = $m[1];
 293                         }
 294                         if ( preg_match( '/^namespace=(\d+)$/', $bit, $m ) ) {
 295                                 $opts['namespace'] = $m[1];
 296                         }
 297                         if ( preg_match( '/^tagfilter=(.*)$/', $bit, $m ) ) {
 298                                 $opts['tagfilter'] = $m[1];
 299                         }
 300                 }
 301         }
 302
 303         public function validateOptions( FormOptions $opts ) {
 304                 $opts->validateIntBounds( 'limit', 0, 5000 );
 305                 parent::validateOptions( $opts );
 306         }
 307
 308         /**
 309          * @inheritdoc
 310          */
 311         protected function buildQuery( &$tables, &$fields, &$conds,
 312                 &$query_options, &$join_conds, FormOptions $opts ) {
 313
 314                 $dbr = $this->getDB();
 315                 parent::buildQuery( $tables, $fields, $conds,
 316                         $query_options, $join_conds, $opts );
 317
 318                 // Calculate cutoff
 319                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 320                 $cutoff_unixtime = $cutoff_unixtime - ( $cutoff_unixtime % 86400 );
 321                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 322
 323                 $fromValid = preg_match( '/^[0-9]{14}$/', $opts['from'] );
 324                 if ( $fromValid && $opts['from'] > wfTimestamp( TS_MW, $cutoff ) ) {
 325                         $cutoff = $dbr->timestamp( $opts['from'] );
 326                 } else {
 327                         $opts->reset( 'from' );
 328                 }
 329
 330                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 331         }
 332
 333         /**
 334          * @inheritdoc
 335          */
 336         protected function doMainQuery( $tables, $fields, $conds, $query_options,
 337                 $join_conds, FormOptions $opts ) {
 338
 339                 $dbr = $this->getDB();
 340                 $user = $this->getUser();
 341
 342                 $tables[] = 'recentchanges';
 343                 $fields = array_merge( RecentChange::selectFields(), $fields );
 344
 345                 // JOIN on watchlist for users
 346                 if ( $user->isLoggedIn() && $user->isAllowed( 'viewmywatchlist' ) ) {
 347                         $tables[] = 'watchlist';
 348                         $fields[] = 'wl_user';
 349                         $fields[] = 'wl_notificationtimestamp';
 350                         $join_conds['watchlist'] = [ 'LEFT JOIN', [
 351                                 'wl_user' => $user->getId(),
 352                                 'wl_title=rc_title',
 353                                 'wl_namespace=rc_namespace'
 354                         ] ];
 355                 }
 356
 357                 if ( $user->isAllowed( 'rollback' ) ) {
 358                         $tables[] = 'page';
 359                         $fields[] = 'page_latest';
 360                         $join_conds['page'] = [ 'LEFT JOIN', 'rc_cur_id=page_id' ];
 361                 }
 362
 363                 ChangeTags::modifyDisplayQuery(
 364                         $tables,
 365                         $fields,
 366                         $conds,
 367                         $join_conds,
 368                         $query_options,
 369                         $opts['tagfilter']
 370                 );
 371
 372                 if ( !$this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds,
 373                         $opts )
 374                 ) {
 375                         return false;
 376                 }
 377
 378                 if ( $this->areFiltersInConflict() ) {
 379                         return false;
 380                 }
 381
 382                 // array_merge() is used intentionally here so that hooks can, should
 383                 // they so desire, override the ORDER BY / LIMIT condition(s); prior to
 384                 // MediaWiki 1.26 this used to use the plus operator instead, which meant
 385                 // that extensions weren't able to change these conditions
 386                 $query_options = array_merge( [
 387                         'ORDER BY' => 'rc_timestamp DESC',
 388                         'LIMIT' => $opts['limit'] ], $query_options );
 389                 $rows = $dbr->select(
 390                         $tables,
 391                         $fields,
 392                         // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
 393                         // knowledge to use an index merge if it wants (it may use some other index though).
 394                         $conds + [ 'rc_new' => [ 0, 1 ] ],
 395                         __METHOD__,
 396                         $query_options,
 397                         $join_conds
 398                 );
 399
 400                 // Build the final data
 401                 if ( $this->getConfig()->get( 'AllowCategorizedRecentChanges' ) ) {
 402                         $this->filterByCategories( $rows, $opts );
 403                 }
 404
 405                 return $rows;
 406         }
 407
 408         protected function runMainQueryHook( &$tables, &$fields, &$conds,
 409                 &$query_options, &$join_conds, $opts
 410         ) {
 411                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 412                         && Hooks::run(
 413                                 'SpecialRecentChangesQuery',
 414                                 [ &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ],
 415                                 '1.23'
 416                         );
 417         }
 418
 419         protected function getDB() {
 420                 return wfGetDB( DB_REPLICA, 'recentchanges' );
 421         }
 422
 423         public function outputFeedLinks() {
 424                 $this->addFeedLinks( $this->getFeedQuery() );
 425         }
 426
 427         /**
 428          * Get URL query parameters for action=feedrecentchanges API feed of current recent changes view.
 429          *
 430          * @return array
 431          */
 432         protected function getFeedQuery() {
 433                 $query = array_filter( $this->getOptions()->getAllValues(), function ( $value ) {
 434                         // API handles empty parameters in a different way
 435                         return $value !== '';
 436                 } );
 437                 $query['action'] = 'feedrecentchanges';
 438                 $feedLimit = $this->getConfig()->get( 'FeedLimit' );
 439                 if ( $query['limit'] > $feedLimit ) {
 440                         $query['limit'] = $feedLimit;
 441                 }
 442
 443                 return $query;
 444         }
 445
 446         /**
 447          * Build and output the actual changes list.
 448          *
 449          * @param ResultWrapper $rows Database rows
 450          * @param FormOptions $opts
 451          */
 452         public function outputChangesList( $rows, $opts ) {
 453                 $limit = $opts['limit'];
 454
 455                 $showWatcherCount = $this->getConfig()->get( 'RCShowWatchingUsers' )
 456                         && $this->getUser()->getOption( 'shownumberswatching' );
 457                 $watcherCache = [];
 458
 459                 $dbr = $this->getDB();
 460
 461                 $counter = 1;
 462                 $list = ChangesList::newFromContext( $this->getContext(), $this->filterGroups );
 463                 $list->initChangesListRows( $rows );
 464
 465                 $userShowHiddenCats = $this->getUser()->getBoolOption( 'showhiddencats' );
 466                 $rclistOutput = $list->beginRecentChangesList();
 467                 foreach ( $rows as $obj ) {
 468                         if ( $limit == 0 ) {
 469                                 break;
 470                         }
 471                         $rc = RecentChange::newFromRow( $obj );
 472
 473                         # Skip CatWatch entries for hidden cats based on user preference
 474                         if (
 475                                 $rc->getAttribute( 'rc_type' ) == RC_CATEGORIZE &&
 476                                 !$userShowHiddenCats &&
 477                                 $rc->getParam( 'hidden-cat' )
 478                         ) {
 479                                 continue;
 480                         }
 481
 482                         $rc->counter = $counter++;
 483                         # Check if the page has been updated since the last visit
 484                         if ( $this->getConfig()->get( 'ShowUpdatedMarker' )
 485                                 && !empty( $obj->wl_notificationtimestamp )
 486                         ) {
 487                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 488                         } else {
 489                                 $rc->notificationtimestamp = false; // Default
 490                         }
 491                         # Check the number of users watching the page
 492                         $rc->numberofWatchingusers = 0; // Default
 493                         if ( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 494                                 if ( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 495                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 496                                                 MediaWikiServices::getInstance()->getWatchedItemStore()->countWatchers(
 497                                                         new TitleValue( (int)$obj->rc_namespace, $obj->rc_title )
 498                                                 );
 499                                 }
 500                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 501                         }
 502
 503                         $changeLine = $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 504                         if ( $changeLine !== false ) {
 505                                 $rclistOutput .= $changeLine;
 506                                 --$limit;
 507                         }
 508                 }
 509                 $rclistOutput .= $list->endRecentChangesList();
 510
 511                 if ( $rows->numRows() === 0 ) {
 512                         $this->outputNoResults();
 513                         if ( !$this->including() ) {
 514                                 $this->getOutput()->setStatusCode( 404 );
 515                         }
 516                 } else {
 517                         $this->getOutput()->addHTML( $rclistOutput );
 518                 }
 519         }
 520
 521         /**
 522          * Set the text to be displayed above the changes
 523          *
 524          * @param FormOptions $opts
 525          * @param int $numRows Number of rows in the result to show after this header
 526          */
 527         public function doHeader( $opts, $numRows ) {
 528                 $this->setTopText( $opts );
 529
 530                 $defaults = $opts->getAllValues();
 531                 $nondefaults = $opts->getChangedValues();
 532
 533                 $panel = [];
 534                 $panel[] = $this->makeLegend();
 535                 $panel[] = $this->optionsPanel( $defaults, $nondefaults, $numRows );
 536                 $panel[] = '<hr />';
 537
 538                 $extraOpts = $this->getExtraOptions( $opts );
 539                 $extraOptsCount = count( $extraOpts );
 540                 $count = 0;
 541                 $submit = ' ' . Xml::submitButton( $this->msg( 'recentchanges-submit' )->text() );
 542
 543                 $out = Xml::openElement( 'table', [ 'class' => 'mw-recentchanges-table' ] );
 544                 foreach ( $extraOpts as $name => $optionRow ) {
 545                         # Add submit button to the last row only
 546                         ++$count;
 547                         $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';
 548
 549                         $out .= Xml::openElement( 'tr' );
 550                         if ( is_array( $optionRow ) ) {
 551                                 $out .= Xml::tags(
 552                                         'td',
 553                                         [ 'class' => 'mw-label mw-' . $name . '-label' ],
 554                                         $optionRow[0]
 555                                 );
 556                                 $out .= Xml::tags(
 557                                         'td',
 558                                         [ 'class' => 'mw-input' ],
 559                                         $optionRow[1] . $addSubmit
 560                                 );
 561                         } else {
 562                                 $out .= Xml::tags(
 563                                         'td',
 564                                         [ 'class' => 'mw-input', 'colspan' => 2 ],
 565                                         $optionRow . $addSubmit
 566                                 );
 567                         }
 568                         $out .= Xml::closeElement( 'tr' );
 569                 }
 570                 $out .= Xml::closeElement( 'table' );
 571
 572                 $unconsumed = $opts->getUnconsumedValues();
 573                 foreach ( $unconsumed as $key => $value ) {
 574                         $out .= Html::hidden( $key, $value );
 575                 }
 576
 577                 $t = $this->getPageTitle();
 578                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 579                 $form = Xml::tags( 'form', [ 'action' => wfScript() ], $out );
 580                 $panel[] = $form;
 581                 $panelString = implode( "\n", $panel );
 582
 583                 $rcoptions = Xml::fieldset(
 584                         $this->msg( 'recentchanges-legend' )->text(),
 585                         $panelString,
 586                         [ 'class' => 'rcoptions' ]
 587                 );
 588
 589                 // Insert a placeholder for RCFilters
 590                 if ( $this->getUser()->getOption( 'rcenhancedfilters' ) ) {
 591                         $rcfilterContainer = Html::element(
 592                                 'div',
 593                                 [ 'class' => 'rcfilters-container' ]
 594                         );
 595
 596                         // Wrap both with rcfilters-head
 597                         $this->getOutput()->addHTML(
 598                                 Html::rawElement(
 599                                         'div',
 600                                         [ 'class' => 'rcfilters-head' ],
 601                                         $rcfilterContainer . $rcoptions
 602                                 )
 603                         );
 604                 } else {
 605                         $this->getOutput()->addHTML( $rcoptions );
 606                 }
 607
 608                 $this->setBottomText( $opts );
 609         }
 610
 611         /**
 612          * Send the text to be displayed above the options
 613          *
 614          * @param FormOptions $opts Unused
 615          */
 616         function setTopText( FormOptions $opts ) {
 617                 global $wgContLang;
 618
 619                 $message = $this->msg( 'recentchangestext' )->inContentLanguage();
 620                 if ( !$message->isDisabled() ) {
 621                         $this->getOutput()->addWikiText(
 622                                 Html::rawElement( 'div',
 623                                         [ 'lang' => $wgContLang->getHtmlCode(), 'dir' => $wgContLang->getDir() ],
 624                                         "\n" . $message->plain() . "\n"
 625                                 ),
 626                                 /* $lineStart */ true,
 627                                 /* $interface */ false
 628                         );
 629                 }
 630         }
 631
 632         /**
 633          * Get options to be displayed in a form
 634          *
 635          * @param FormOptions $opts
 636          * @return array
 637          */
 638         function getExtraOptions( $opts ) {
 639                 $opts->consumeValues( [
 640                         'namespace', 'invert', 'associated', 'tagfilter', 'categories', 'categories_any'
 641                 ] );
 642
 643                 $extraOpts = [];
 644                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 645
 646                 if ( $this->getConfig()->get( 'AllowCategorizedRecentChanges' ) ) {
 647                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 648                 }
 649
 650                 $tagFilter = ChangeTags::buildTagFilterSelector(
 651                         $opts['tagfilter'], false, $this->getContext() );
 652                 if ( count( $tagFilter ) ) {
 653                         $extraOpts['tagfilter'] = $tagFilter;
 654                 }
 655
 656                 // Don't fire the hook for subclasses. (Or should we?)
 657                 if ( $this->getName() === 'Recentchanges' ) {
 658                         Hooks::run( 'SpecialRecentChangesPanel', [ &$extraOpts, $opts ] );
 659                 }
 660
 661                 return $extraOpts;
 662         }
 663
 664         /**
 665          * Check whether the structured filter UI is enabled
 666          *
 667          * @return bool
 668          */
 669         protected function isStructuredFilterUiEnabled() {
 670                 return $this->getUser()->getOption(
 671                         'rcenhancedfilters'
 672                 );
 673         }
 674
 675         /**
 676          * Add page-specific modules.
 677          */
 678         protected function addModules() {
 679                 parent::addModules();
 680                 $out = $this->getOutput();
 681                 $out->addModules( 'mediawiki.special.recentchanges' );
 682                 if ( $this->isStructuredFilterUiEnabled() ) {
 683                         $out->addModules( 'mediawiki.rcfilters.filters.ui' );
 684                         $out->addModuleStyles( 'mediawiki.rcfilters.filters.base.styles' );
 685                 }
 686         }
 687
 688         /**
 689          * Get last modified date, for client caching
 690          * Don't use this if we are using the patrol feature, patrol changes don't
 691          * update the timestamp
 692          *
 693          * @return string|bool
 694          */
 695         public function checkLastModified() {
 696                 $dbr = $this->getDB();
 697                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 698
 699                 return $lastmod;
 700         }
 701
 702         /**
 703          * Creates the choose namespace selection
 704          *
 705          * @param FormOptions $opts
 706          * @return string
 707          */
 708         protected function namespaceFilterForm( FormOptions $opts ) {
 709                 $nsSelect = Html::namespaceSelector(
 710                         [ 'selected' => $opts['namespace'], 'all' => '' ],
 711                         [ 'name' => 'namespace', 'id' => 'namespace' ]
 712                 );
 713                 $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
 714                 $invert = Xml::checkLabel(
 715                         $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
 716                         $opts['invert'],
 717                         [ 'title' => $this->msg( 'tooltip-invert' )->text() ]
 718                 );
 719                 $associated = Xml::checkLabel(
 720                         $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
 721                         $opts['associated'],
 722                         [ 'title' => $this->msg( 'tooltip-namespace_association' )->text() ]
 723                 );
 724
 725                 return [ $nsLabel, "$nsSelect $invert $associated" ];
 726         }
 727
 728         /**
 729          * Create an input to filter changes by categories
 730          *
 731          * @param FormOptions $opts
 732          * @return array
 733          */
 734         protected function categoryFilterForm( FormOptions $opts ) {
 735                 list( $label, $input ) = Xml::inputLabelSep( $this->msg( 'rc_categories' )->text(),
 736                         'categories', 'mw-categories', false, $opts['categories'] );
 737
 738                 $input .= ' ' . Xml::checkLabel( $this->msg( 'rc_categories_any' )->text(),
 739                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 740
 741                 return [ $label, $input ];
 742         }
 743
 744         /**
 745          * Filter $rows by categories set in $opts
 746          *
 747          * @param ResultWrapper $rows Database rows
 748          * @param FormOptions $opts
 749          */
 750         function filterByCategories( &$rows, FormOptions $opts ) {
 751                 $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );
 752
 753                 if ( !count( $categories ) ) {
 754                         return;
 755                 }
 756
 757                 # Filter categories
 758                 $cats = [];
 759                 foreach ( $categories as $cat ) {
 760                         $cat = trim( $cat );
 761                         if ( $cat == '' ) {
 762                                 continue;
 763                         }
 764                         $cats[] = $cat;
 765                 }
 766
 767                 # Filter articles
 768                 $articles = [];
 769                 $a2r = [];
 770                 $rowsarr = [];
 771                 foreach ( $rows as $k => $r ) {
 772                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 773                         $id = $nt->getArticleID();
 774                         if ( $id == 0 ) {
 775                                 continue; # Page might have been deleted...
 776                         }
 777                         if ( !in_array( $id, $articles ) ) {
 778                                 $articles[] = $id;
 779                         }
 780                         if ( !isset( $a2r[$id] ) ) {
 781                                 $a2r[$id] = [];
 782                         }
 783                         $a2r[$id][] = $k;
 784                         $rowsarr[$k] = $r;
 785                 }
 786
 787                 # Shortcut?
 788                 if ( !count( $articles ) || !count( $cats ) ) {
 789                         return;
 790                 }
 791
 792                 # Look up
 793                 $catFind = new CategoryFinder;
 794                 $catFind->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 795                 $match = $catFind->run();
 796
 797                 # Filter
 798                 $newrows = [];
 799                 foreach ( $match as $id ) {
 800                         foreach ( $a2r[$id] as $rev ) {
 801                                 $k = $rev;
 802                                 $newrows[$k] = $rowsarr[$k];
 803                         }
 804                 }
 805                 $rows = new FakeResultWrapper( array_values( $newrows ) );
 806         }
 807
 808         /**
 809          * Makes change an option link which carries all the other options
 810          *
 811          * @param string $title Title
 812          * @param array $override Options to override
 813          * @param array $options Current options
 814          * @param bool $active Whether to show the link in bold
 815          * @return string
 816          */
 817         function makeOptionsLink( $title, $override, $options, $active = false ) {
 818                 $params = $override + $options;
 819
 820                 // T38524: false values have be converted to "0" otherwise
 821                 // wfArrayToCgi() will omit it them.
 822                 foreach ( $params as &$value ) {
 823                         if ( $value === false ) {
 824                                 $value = '0';
 825                         }
 826                 }
 827                 unset( $value );
 828
 829                 if ( $active ) {
 830                         $title = new HtmlArmor( '<strong>' . htmlspecialchars( $title ) . '</strong>' );
 831                 }
 832
 833                 return $this->getLinkRenderer()->makeKnownLink( $this->getPageTitle(), $title, [
 834                         'data-params' => json_encode( $override ),
 835                         'data-keys' => implode( ',', array_keys( $override ) ),
 836                 ], $params );
 837         }
 838
 839         /**
 840          * Creates the options panel.
 841          *
 842          * @param array $defaults
 843          * @param array $nondefaults
 844          * @param int $numRows Number of rows in the result to show after this header
 845          * @return string
 846          */
 847         function optionsPanel( $defaults, $nondefaults, $numRows ) {
 848                 $options = $nondefaults + $defaults;
 849
 850                 $note = '';
 851                 $msg = $this->msg( 'rclegend' );
 852                 if ( !$msg->isDisabled() ) {
 853                         $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
 854                 }
 855
 856                 $lang = $this->getLanguage();
 857                 $user = $this->getUser();
 858                 $config = $this->getConfig();
 859                 if ( $options['from'] ) {
 860                         $resetLink = $this->makeOptionsLink( $this->msg( 'rclistfromreset' ),
 861                                 [ 'from' => '' ], $nondefaults );
 862
 863                         $note .= $this->msg( 'rcnotefrom' )
 864                                 ->numParams( $options['limit'] )
 865                                 ->params(
 866                                         $lang->userTimeAndDate( $options['from'], $user ),
 867                                         $lang->userDate( $options['from'], $user ),
 868                                         $lang->userTime( $options['from'], $user )
 869                                 )
 870                                 ->numParams( $numRows )
 871                                 ->parse() . ' ' .
 872                                 Html::rawElement(
 873                                         'span',
 874                                         [ 'class' => 'rcoptions-listfromreset' ],
 875                                         $this->msg( 'parentheses' )->rawParams( $resetLink )->parse()
 876                                 ) .
 877                                 '<br />';
 878                 }
 879
 880                 # Sort data for display and make sure it's unique after we've added user data.
 881                 $linkLimits = $config->get( 'RCLinkLimits' );
 882                 $linkLimits[] = $options['limit'];
 883                 sort( $linkLimits );
 884                 $linkLimits = array_unique( $linkLimits );
 885
 886                 $linkDays = $config->get( 'RCLinkDays' );
 887                 $linkDays[] = $options['days'];
 888                 sort( $linkDays );
 889                 $linkDays = array_unique( $linkDays );
 890
 891                 // limit links
 892                 $cl = [];
 893                 foreach ( $linkLimits as $value ) {
 894                         $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 895                                 [ 'limit' => $value ], $nondefaults, $value == $options['limit'] );
 896                 }
 897                 $cl = $lang->pipeList( $cl );
 898
 899                 // day links, reset 'from' to none
 900                 $dl = [];
 901                 foreach ( $linkDays as $value ) {
 902                         $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 903                                 [ 'days' => $value, 'from' => '' ], $nondefaults, $value == $options['days'] );
 904                 }
 905                 $dl = $lang->pipeList( $dl );
 906
 907                 $showhide = [ 'show', 'hide' ];
 908
 909                 $links = [];
 910
 911                 $filterGroups = $this->getFilterGroups();
 912
 913                 $context = $this->getContext();
 914                 foreach ( $filterGroups as $groupName => $group ) {
 915                         if ( !$group->isPerGroupRequestParameter() ) {
 916                                 foreach ( $group->getFilters() as $key => $filter ) {
 917                                         if ( $filter->displaysOnUnstructuredUi( $this ) ) {
 918                                                 $msg = $filter->getShowHide();
 919                                                 $linkMessage = $this->msg( $msg . '-' . $showhide[1 - $options[$key]] );
 920                                                 // Extensions can define additional filters, but don't need to define the corresponding
 921                                                 // messages. If they don't exist, just fall back to 'show' and 'hide'.
 922                                                 if ( !$linkMessage->exists() ) {
 923                                                         $linkMessage = $this->msg( $showhide[1 - $options[$key]] );
 924                                                 }
 925
 926                                                 $link = $this->makeOptionsLink( $linkMessage->text(),
 927                                                         [ $key => 1 - $options[$key] ], $nondefaults );
 928
 929                                                 $attribs = [
 930                                                         'class' => "$msg rcshowhideoption",
 931                                                         'data-filter-name' => $filter->getName(),
 932                                                 ];
 933
 934                                                 if ( $filter->isFeatureAvailableOnStructuredUi( $this ) ) {
 935                                                         $attribs['data-feature-in-structured-ui'] = true;
 936                                                 }
 937
 938                                                 $links[] = Html::rawElement(
 939                                                         'span',
 940                                                         $attribs,
 941                                                         $this->msg( $msg )->rawParams( $link )->escaped()
 942                                                 );
 943                                         }
 944                                 }
 945                         }
 946                 }
 947
 948                 // show from this onward link
 949                 $timestamp = wfTimestampNow();
 950                 $now = $lang->userTimeAndDate( $timestamp, $user );
 951                 $timenow = $lang->userTime( $timestamp, $user );
 952                 $datenow = $lang->userDate( $timestamp, $user );
 953                 $pipedLinks = '<span class="rcshowhide">' . $lang->pipeList( $links ) . '</span>';
 954
 955                 $rclinks = '<span class="rclinks">' . $this->msg( 'rclinks' )->rawParams( $cl, $dl, '' )
 956                         ->parse() . '</span>';
 957
 958                 $rclistfrom = '<span class="rclistfrom">' . $this->makeOptionsLink(
 959                         $this->msg( 'rclistfrom' )->rawParams( $now, $timenow, $datenow )->parse(),
 960                         [ 'from' => $timestamp ],
 961                         $nondefaults
 962                 ) . '</span>';
 963
 964                 return "{$note}$rclinks<br />$pipedLinks<br />$rclistfrom";
 965         }
 966
 967         public function isIncludable() {
 968                 return true;
 969         }
 970
 971         protected function getCacheTTL() {
 972                 return 60 * 5;
 973         }
 974 }