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 /**
  25  * A special page that lists last changes made to the wiki
  26  *
  27  * @ingroup SpecialPage
  28  */
  29 class SpecialRecentChanges extends ChangesListSpecialPage {
  30         // @codingStandardsIgnoreStart Needed "useless" override to change parameters.
  31         public function __construct( $name = 'Recentchanges', $restriction = '' ) {
  32                 parent::__construct( $name, $restriction );
  33         }
  34         // @codingStandardsIgnoreEnd
  35
  36         /**
  37          * Main execution point
  38          *
  39          * @param string $subpage
  40          */
  41         public function execute( $subpage ) {
  42                 // Backwards-compatibility: redirect to new feed URLs
  43                 $feedFormat = $this->getRequest()->getVal( 'feed' );
  44                 if ( !$this->including() && $feedFormat ) {
  45                         $query = $this->getFeedQuery();
  46                         $query['feedformat'] = $feedFormat === 'atom' ? 'atom' : 'rss';
  47                         $this->getOutput()->redirect( wfAppendQuery( wfScript( 'api' ), $query ) );
  48
  49                         return;
  50                 }
  51
  52                 // 10 seconds server-side caching max
  53                 $this->getOutput()->setSquidMaxage( 10 );
  54                 // Check if the client has a cached version
  55                 $lastmod = $this->checkLastModified();
  56                 if ( $lastmod === false ) {
  57                         return;
  58                 }
  59
  60                 parent::execute( $subpage );
  61         }
  62
  63         /**
  64          * Get a FormOptions object containing the default options
  65          *
  66          * @return FormOptions
  67          */
  68         public function getDefaultOptions() {
  69                 $opts = parent::getDefaultOptions();
  70                 $user = $this->getUser();
  71
  72                 $opts->add( 'days', $user->getIntOption( 'rcdays' ) );
  73                 $opts->add( 'limit', $user->getIntOption( 'rclimit' ) );
  74                 $opts->add( 'from', '' );
  75
  76                 $opts->add( 'hideminor', $user->getBoolOption( 'hideminor' ) );
  77                 $opts->add( 'hidebots', true );
  78                 $opts->add( 'hideanons', false );
  79                 $opts->add( 'hideliu', false );
  80                 $opts->add( 'hidepatrolled', $user->getBoolOption( 'hidepatrolled' ) );
  81                 $opts->add( 'hidemyself', false );
  82
  83                 $opts->add( 'categories', '' );
  84                 $opts->add( 'categories_any', false );
  85                 $opts->add( 'tagfilter', '' );
  86
  87                 return $opts;
  88         }
  89
  90         /**
  91          * Get custom show/hide filters
  92          *
  93          * @return array Map of filter URL param names to properties (msg/default)
  94          */
  95         protected function getCustomFilters() {
  96                 if ( $this->customFilters === null ) {
  97                         $this->customFilters = parent::getCustomFilters();
  98                         wfRunHooks( 'SpecialRecentChangesFilters', array( $this, &$this->customFilters ), '1.23' );
  99                 }
 100
 101                 return $this->customFilters;
 102         }
 103
 104         /**
 105          * Process $par and put options found in $opts. Used when including the page.
 106          *
 107          * @param string $par
 108          * @param FormOptions $opts
 109          */
 110         public function parseParameters( $par, FormOptions $opts ) {
 111                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 112                 foreach ( $bits as $bit ) {
 113                         if ( 'hidebots' === $bit ) {
 114                                 $opts['hidebots'] = true;
 115                         }
 116                         if ( 'bots' === $bit ) {
 117                                 $opts['hidebots'] = false;
 118                         }
 119                         if ( 'hideminor' === $bit ) {
 120                                 $opts['hideminor'] = true;
 121                         }
 122                         if ( 'minor' === $bit ) {
 123                                 $opts['hideminor'] = false;
 124                         }
 125                         if ( 'hideliu' === $bit ) {
 126                                 $opts['hideliu'] = true;
 127                         }
 128                         if ( 'hidepatrolled' === $bit ) {
 129                                 $opts['hidepatrolled'] = true;
 130                         }
 131                         if ( 'hideanons' === $bit ) {
 132                                 $opts['hideanons'] = true;
 133                         }
 134                         if ( 'hidemyself' === $bit ) {
 135                                 $opts['hidemyself'] = true;
 136                         }
 137
 138                         if ( is_numeric( $bit ) ) {
 139                                 $opts['limit'] = $bit;
 140                         }
 141
 142                         $m = array();
 143                         if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 144                                 $opts['limit'] = $m[1];
 145                         }
 146                         if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
 147                                 $opts['days'] = $m[1];
 148                         }
 149                         if ( preg_match( '/^namespace=(\d+)$/', $bit, $m ) ) {
 150                                 $opts['namespace'] = $m[1];
 151                         }
 152                 }
 153         }
 154
 155         public function validateOptions( FormOptions $opts ) {
 156                 $opts->validateIntBounds( 'limit', 0, 5000 );
 157                 parent::validateOptions( $opts );
 158         }
 159
 160         /**
 161          * Return an array of conditions depending of options set in $opts
 162          *
 163          * @param FormOptions $opts
 164          * @return array
 165          */
 166         public function buildMainQueryConds( FormOptions $opts ) {
 167                 $dbr = $this->getDB();
 168                 $conds = parent::buildMainQueryConds( $opts );
 169
 170                 // Calculate cutoff
 171                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 172                 $cutoff_unixtime = $cutoff_unixtime - ( $cutoff_unixtime % 86400 );
 173                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 174
 175                 $fromValid = preg_match( '/^[0-9]{14}$/', $opts['from'] );
 176                 if ( $fromValid && $opts['from'] > wfTimestamp( TS_MW, $cutoff ) ) {
 177                         $cutoff = $dbr->timestamp( $opts['from'] );
 178                 } else {
 179                         $opts->reset( 'from' );
 180                 }
 181
 182                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 183
 184                 return $conds;
 185         }
 186
 187         /**
 188          * Process the query
 189          *
 190          * @param array $conds
 191          * @param FormOptions $opts
 192          * @return bool|ResultWrapper Result or false (for Recentchangeslinked only)
 193          */
 194         public function doMainQuery( $conds, $opts ) {
 195                 global $wgAllowCategorizedRecentChanges;
 196
 197                 $dbr = $this->getDB();
 198                 $user = $this->getUser();
 199
 200                 $tables = array( 'recentchanges' );
 201                 $fields = RecentChange::selectFields();
 202                 $query_options = array();
 203                 $join_conds = array();
 204
 205                 // JOIN on watchlist for users
 206                 if ( $user->getId() && $user->isAllowed( 'viewmywatchlist' ) ) {
 207                         $tables[] = 'watchlist';
 208                         $fields[] = 'wl_user';
 209                         $fields[] = 'wl_notificationtimestamp';
 210                         $join_conds['watchlist'] = array( 'LEFT JOIN', array(
 211                                 'wl_user' => $user->getId(),
 212                                 'wl_title=rc_title',
 213                                 'wl_namespace=rc_namespace'
 214                         ) );
 215                 }
 216
 217                 if ( $user->isAllowed( 'rollback' ) ) {
 218                         $tables[] = 'page';
 219                         $fields[] = 'page_latest';
 220                         $join_conds['page'] = array( 'LEFT JOIN', 'rc_cur_id=page_id' );
 221                 }
 222
 223                 ChangeTags::modifyDisplayQuery(
 224                         $tables,
 225                         $fields,
 226                         $conds,
 227                         $join_conds,
 228                         $query_options,
 229                         $opts['tagfilter']
 230                 );
 231
 232                 if ( !$this->runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds,
 233                         $opts )
 234                 ) {
 235                         return false;
 236                 }
 237
 238                 // rc_new is not an ENUM, but adding a redundant rc_new IN (0,1) gives mysql enough
 239                 // knowledge to use an index merge if it wants (it may use some other index though).
 240                 $rows = $dbr->select(
 241                         $tables,
 242                         $fields,
 243                         $conds + array( 'rc_new' => array( 0, 1 ) ),
 244                         __METHOD__,
 245                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $opts['limit'] ) + $query_options,
 246                         $join_conds
 247                 );
 248
 249                 // Build the final data
 250                 if ( $wgAllowCategorizedRecentChanges ) {
 251                         $this->filterByCategories( $rows, $opts );
 252                 }
 253
 254                 return $rows;
 255         }
 256
 257         protected function runMainQueryHook( &$tables, &$fields, &$conds, &$query_options, &$join_conds, $opts ) {
 258                 return parent::runMainQueryHook( $tables, $fields, $conds, $query_options, $join_conds, $opts )
 259                         && wfRunHooks(
 260                                 'SpecialRecentChangesQuery',
 261                                 array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ),
 262                                 '1.23'
 263                         );
 264         }
 265
 266         public function outputFeedLinks() {
 267                 $this->addFeedLinks( $this->getFeedQuery() );
 268         }
 269
 270         /**
 271          * Get URL query parameters for action=feedrecentchanges API feed of current recent changes view.
 272          *
 273          * @return array
 274          */
 275         private function getFeedQuery() {
 276                 global $wgFeedLimit;
 277                 $query = array_filter( $this->getOptions()->getAllValues(), function ( $value ) {
 278                         // API handles empty parameters in a different way
 279                         return $value !== '';
 280                 } );
 281                 $query['action'] = 'feedrecentchanges';
 282                 if ( $query['limit'] > $wgFeedLimit ) {
 283                         $query['limit'] = $wgFeedLimit;
 284                 }
 285
 286                 return $query;
 287         }
 288
 289         /**
 290          * Build and output the actual changes list.
 291          *
 292          * @param array $rows Database rows
 293          * @param FormOptions $opts
 294          */
 295         public function outputChangesList( $rows, $opts ) {
 296                 global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
 297
 298                 $limit = $opts['limit'];
 299
 300                 $showWatcherCount = $wgRCShowWatchingUsers
 301                         && $this->getUser()->getOption( 'shownumberswatching' );
 302                 $watcherCache = array();
 303
 304                 $dbr = $this->getDB();
 305
 306                 $counter = 1;
 307                 $list = ChangesList::newFromContext( $this->getContext() );
 308                 $list->initChangesListRows( $rows );
 309
 310                 $rclistOutput = $list->beginRecentChangesList();
 311                 foreach ( $rows as $obj ) {
 312                         if ( $limit == 0 ) {
 313                                 break;
 314                         }
 315                         $rc = RecentChange::newFromRow( $obj );
 316                         $rc->counter = $counter++;
 317                         # Check if the page has been updated since the last visit
 318                         if ( $wgShowUpdatedMarker && !empty( $obj->wl_notificationtimestamp ) ) {
 319                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 320                         } else {
 321                                 $rc->notificationtimestamp = false; // Default
 322                         }
 323                         # Check the number of users watching the page
 324                         $rc->numberofWatchingusers = 0; // Default
 325                         if ( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 326                                 if ( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 327                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 328                                                 $dbr->selectField(
 329                                                         'watchlist',
 330                                                         'COUNT(*)',
 331                                                         array(
 332                                                                 'wl_namespace' => $obj->rc_namespace,
 333                                                                 'wl_title' => $obj->rc_title,
 334                                                         ),
 335                                                         __METHOD__ . '-watchers'
 336                                                 );
 337                                 }
 338                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 339                         }
 340
 341                         $changeLine = $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 342                         if ( $changeLine !== false ) {
 343                                 $rclistOutput .= $changeLine;
 344                                 --$limit;
 345                         }
 346                 }
 347                 $rclistOutput .= $list->endRecentChangesList();
 348
 349                 if ( $rows->numRows() === 0 ) {
 350                         $this->getOutput()->addHtml(
 351                                 '<div class="mw-changeslist-empty">' .
 352                                 $this->msg( 'recentchanges-noresult' )->parse() .
 353                                 '</div>'
 354                         );
 355                         if ( !$this->including() ) {
 356                                 $this->getOutput()->setStatusCode( 404 );
 357                         }
 358                 } else {
 359                         $this->getOutput()->addHTML( $rclistOutput );
 360                 }
 361         }
 362
 363         /**
 364          * Set the text to be displayed above the changes
 365          *
 366          * @param FormOptions $opts
 367          * @param int $numRows Number of rows in the result to show after this header
 368          */
 369         public function doHeader( $opts, $numRows ) {
 370                 global $wgScript;
 371
 372                 $this->setTopText( $opts );
 373
 374                 $defaults = $opts->getAllValues();
 375                 $nondefaults = $opts->getChangedValues();
 376
 377                 $panel = array();
 378                 $panel[] = self::makeLegend( $this->getContext() );
 379                 $panel[] = $this->optionsPanel( $defaults, $nondefaults, $numRows );
 380                 $panel[] = '<hr />';
 381
 382                 $extraOpts = $this->getExtraOptions( $opts );
 383                 $extraOptsCount = count( $extraOpts );
 384                 $count = 0;
 385                 $submit = ' ' . Xml::submitbutton( $this->msg( 'allpagessubmit' )->text() );
 386
 387                 $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
 388                 foreach ( $extraOpts as $name => $optionRow ) {
 389                         # Add submit button to the last row only
 390                         ++$count;
 391                         $addSubmit = ( $count === $extraOptsCount ) ? $submit : '';
 392
 393                         $out .= Xml::openElement( 'tr' );
 394                         if ( is_array( $optionRow ) ) {
 395                                 $out .= Xml::tags(
 396                                         'td',
 397                                         array( 'class' => 'mw-label mw-' . $name . '-label' ),
 398                                         $optionRow[0]
 399                                 );
 400                                 $out .= Xml::tags(
 401                                         'td',
 402                                         array( 'class' => 'mw-input' ),
 403                                         $optionRow[1] . $addSubmit
 404                                 );
 405                         } else {
 406                                 $out .= Xml::tags(
 407                                         'td',
 408                                         array( 'class' => 'mw-input', 'colspan' => 2 ),
 409                                         $optionRow . $addSubmit
 410                                 );
 411                         }
 412                         $out .= Xml::closeElement( 'tr' );
 413                 }
 414                 $out .= Xml::closeElement( 'table' );
 415
 416                 $unconsumed = $opts->getUnconsumedValues();
 417                 foreach ( $unconsumed as $key => $value ) {
 418                         $out .= Html::hidden( $key, $value );
 419                 }
 420
 421                 $t = $this->getPageTitle();
 422                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 423                 $form = Xml::tags( 'form', array( 'action' => $wgScript ), $out );
 424                 $panel[] = $form;
 425                 $panelString = implode( "\n", $panel );
 426
 427                 $this->getOutput()->addHTML(
 428                         Xml::fieldset(
 429                                 $this->msg( 'recentchanges-legend' )->text(),
 430                                 $panelString,
 431                                 array( 'class' => 'rcoptions' )
 432                         )
 433                 );
 434
 435                 $this->setBottomText( $opts );
 436         }
 437
 438         /**
 439          * Send the text to be displayed above the options
 440          *
 441          * @param FormOptions $opts Unused
 442          */
 443         function setTopText( FormOptions $opts ) {
 444                 global $wgContLang;
 445
 446                 $message = $this->msg( 'recentchangestext' )->inContentLanguage();
 447                 if ( !$message->isDisabled() ) {
 448                         $this->getOutput()->addWikiText(
 449                                 Html::rawElement( 'p',
 450                                         array( 'lang' => $wgContLang->getCode(), 'dir' => $wgContLang->getDir() ),
 451                                         "\n" . $message->plain() . "\n"
 452                                 ),
 453                                 /* $lineStart */ false,
 454                                 /* $interface */ false
 455                         );
 456                 }
 457         }
 458
 459         /**
 460          * Get options to be displayed in a form
 461          *
 462          * @param FormOptions $opts
 463          * @return array
 464          */
 465         function getExtraOptions( $opts ) {
 466                 $opts->consumeValues( array(
 467                         'namespace', 'invert', 'associated', 'tagfilter', 'categories', 'categories_any'
 468                 ) );
 469
 470                 $extraOpts = array();
 471                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 472
 473                 global $wgAllowCategorizedRecentChanges;
 474                 if ( $wgAllowCategorizedRecentChanges ) {
 475                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 476                 }
 477
 478                 $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
 479                 if ( count( $tagFilter ) ) {
 480                         $extraOpts['tagfilter'] = $tagFilter;
 481                 }
 482
 483                 // Don't fire the hook for subclasses. (Or should we?)
 484                 if ( $this->getName() === 'Recentchanges' ) {
 485                         wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
 486                 }
 487
 488                 return $extraOpts;
 489         }
 490
 491         /**
 492          * Add page-specific modules.
 493          */
 494         protected function addModules() {
 495                 parent::addModules();
 496                 $out = $this->getOutput();
 497                 $out->addModules( 'mediawiki.special.recentchanges' );
 498         }
 499
 500         /**
 501          * Get last modified date, for client caching
 502          * Don't use this if we are using the patrol feature, patrol changes don't
 503          * update the timestamp
 504          *
 505          * @return string|bool
 506          */
 507         public function checkLastModified() {
 508                 $dbr = $this->getDB();
 509                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 510
 511                 return $lastmod;
 512         }
 513
 514         /**
 515          * Creates the choose namespace selection
 516          *
 517          * @param FormOptions $opts
 518          * @return string
 519          */
 520         protected function namespaceFilterForm( FormOptions $opts ) {
 521                 $nsSelect = Html::namespaceSelector(
 522                         array( 'selected' => $opts['namespace'], 'all' => '' ),
 523                         array( 'name' => 'namespace', 'id' => 'namespace' )
 524                 );
 525                 $nsLabel = Xml::label( $this->msg( 'namespace' )->text(), 'namespace' );
 526                 $invert = Xml::checkLabel(
 527                         $this->msg( 'invert' )->text(), 'invert', 'nsinvert',
 528                         $opts['invert'],
 529                         array( 'title' => $this->msg( 'tooltip-invert' )->text() )
 530                 );
 531                 $associated = Xml::checkLabel(
 532                         $this->msg( 'namespace_association' )->text(), 'associated', 'nsassociated',
 533                         $opts['associated'],
 534                         array( 'title' => $this->msg( 'tooltip-namespace_association' )->text() )
 535                 );
 536
 537                 return array( $nsLabel, "$nsSelect $invert $associated" );
 538         }
 539
 540         /**
 541          * Create an input to filter changes by categories
 542          *
 543          * @param FormOptions $opts
 544          * @return array
 545          */
 546         protected function categoryFilterForm( FormOptions $opts ) {
 547                 list( $label, $input ) = Xml::inputLabelSep( $this->msg( 'rc_categories' )->text(),
 548                         'categories', 'mw-categories', false, $opts['categories'] );
 549
 550                 $input .= ' ' . Xml::checkLabel( $this->msg( 'rc_categories_any' )->text(),
 551                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 552
 553                 return array( $label, $input );
 554         }
 555
 556         /**
 557          * Filter $rows by categories set in $opts
 558          *
 559          * @param ResultWrapper $rows Database rows
 560          * @param FormOptions $opts
 561          */
 562         function filterByCategories( &$rows, FormOptions $opts ) {
 563                 $categories = array_map( 'trim', explode( '|', $opts['categories'] ) );
 564
 565                 if ( !count( $categories ) ) {
 566                         return;
 567                 }
 568
 569                 # Filter categories
 570                 $cats = array();
 571                 foreach ( $categories as $cat ) {
 572                         $cat = trim( $cat );
 573                         if ( $cat == '' ) {
 574                                 continue;
 575                         }
 576                         $cats[] = $cat;
 577                 }
 578
 579                 # Filter articles
 580                 $articles = array();
 581                 $a2r = array();
 582                 $rowsarr = array();
 583                 foreach ( $rows as $k => $r ) {
 584                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 585                         $id = $nt->getArticleID();
 586                         if ( $id == 0 ) {
 587                                 continue; # Page might have been deleted...
 588                         }
 589                         if ( !in_array( $id, $articles ) ) {
 590                                 $articles[] = $id;
 591                         }
 592                         if ( !isset( $a2r[$id] ) ) {
 593                                 $a2r[$id] = array();
 594                         }
 595                         $a2r[$id][] = $k;
 596                         $rowsarr[$k] = $r;
 597                 }
 598
 599                 # Shortcut?
 600                 if ( !count( $articles ) || !count( $cats ) ) {
 601                         return;
 602                 }
 603
 604                 # Look up
 605                 $c = new Categoryfinder;
 606                 $c->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 607                 $match = $c->run();
 608
 609                 # Filter
 610                 $newrows = array();
 611                 foreach ( $match as $id ) {
 612                         foreach ( $a2r[$id] as $rev ) {
 613                                 $k = $rev;
 614                                 $newrows[$k] = $rowsarr[$k];
 615                         }
 616                 }
 617                 $rows = $newrows;
 618         }
 619
 620         /**
 621          * Makes change an option link which carries all the other options
 622          *
 623          * @param string $title Title
 624          * @param array $override Options to override
 625          * @param array $options Current options
 626          * @param bool $active Whether to show the link in bold
 627          * @return string
 628          */
 629         function makeOptionsLink( $title, $override, $options, $active = false ) {
 630                 $params = $override + $options;
 631
 632                 // Bug 36524: false values have be converted to "0" otherwise
 633                 // wfArrayToCgi() will omit it them.
 634                 foreach ( $params as &$value ) {
 635                         if ( $value === false ) {
 636                                 $value = '0';
 637                         }
 638                 }
 639                 unset( $value );
 640
 641                 $text = htmlspecialchars( $title );
 642                 if ( $active ) {
 643                         $text = '<strong>' . $text . '</strong>';
 644                 }
 645
 646                 return Linker::linkKnown( $this->getPageTitle(), $text, array(), $params );
 647         }
 648
 649         /**
 650          * Creates the options panel.
 651          *
 652          * @param array $defaults
 653          * @param array $nondefaults
 654          * @param int $numRows Number of rows in the result to show after this header
 655          * @return string
 656          */
 657         function optionsPanel( $defaults, $nondefaults, $numRows ) {
 658                 global $wgRCLinkLimits, $wgRCLinkDays;
 659
 660                 $options = $nondefaults + $defaults;
 661
 662                 $note = '';
 663                 $msg = $this->msg( 'rclegend' );
 664                 if ( !$msg->isDisabled() ) {
 665                         $note .= '<div class="mw-rclegend">' . $msg->parse() . "</div>\n";
 666                 }
 667
 668                 $lang = $this->getLanguage();
 669                 $user = $this->getUser();
 670                 if ( $options['from'] ) {
 671                         $note .= $this->msg( 'rcnotefrom' )
 672                                 ->numParams( $options['limit'] )
 673                                 ->params(
 674                                         $lang->userTimeAndDate( $options['from'], $user ),
 675                                         $lang->userDate( $options['from'], $user ),
 676                                         $lang->userTime( $options['from'], $user )
 677                                 )
 678                                 ->numParams( $numRows )
 679                                 ->parse() . '<br />';
 680                 }
 681
 682                 # Sort data for display and make sure it's unique after we've added user data.
 683                 $linkLimits = $wgRCLinkLimits;
 684                 $linkLimits[] = $options['limit'];
 685                 sort( $linkLimits );
 686                 $linkLimits = array_unique( $linkLimits );
 687
 688                 $linkDays = $wgRCLinkDays;
 689                 $linkDays[] = $options['days'];
 690                 sort( $linkDays );
 691                 $linkDays = array_unique( $linkDays );
 692
 693                 // limit links
 694                 $cl = array();
 695                 foreach ( $linkLimits as $value ) {
 696                         $cl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 697                                 array( 'limit' => $value ), $nondefaults, $value == $options['limit'] );
 698                 }
 699                 $cl = $lang->pipeList( $cl );
 700
 701                 // day links, reset 'from' to none
 702                 $dl = array();
 703                 foreach ( $linkDays as $value ) {
 704                         $dl[] = $this->makeOptionsLink( $lang->formatNum( $value ),
 705                                 array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] );
 706                 }
 707                 $dl = $lang->pipeList( $dl );
 708
 709                 // show/hide links
 710                 $filters = array(
 711                         'hideminor' => 'rcshowhideminor',
 712                         'hidebots' => 'rcshowhidebots',
 713                         'hideanons' => 'rcshowhideanons',
 714                         'hideliu' => 'rcshowhideliu',
 715                         'hidepatrolled' => 'rcshowhidepatr',
 716                         'hidemyself' => 'rcshowhidemine'
 717                 );
 718
 719                 $showhide = array( 'show', 'hide' );
 720
 721                 foreach ( $this->getCustomFilters() as $key => $params ) {
 722                         $filters[$key] = $params['msg'];
 723                 }
 724                 // Disable some if needed
 725                 if ( !$user->useRCPatrol() ) {
 726                         unset( $filters['hidepatrolled'] );
 727                 }
 728
 729                 $links = array();
 730                 foreach ( $filters as $key => $msg ) {
 731                         // The following messages are used here:
 732                         // rcshowhideminor-show, rcshowhideminor-hide, rcshowhidebots-show, rcshowhidebots-hide,
 733                         // rcshowhideanons-show, rcshowhideanons-hide, rcshowhideliu-show, rcshowhideliu-hide,
 734                         // rcshowhidepatr-show, rcshowhidepatr-hide, rcshowhidemine-show, rcshowhidemine-hide.
 735                         $linkMessage = $this->msg( $msg . '-' . $showhide[1 - $options[$key]] );
 736                         // Extensions can define additional filters, but don't need to define the corresponding
 737                         // messages. If they don't exist, just fall back to 'show' and 'hide'.
 738                         if ( !$linkMessage->exists() ) {
 739                                 $linkMessage = $this->msg( $showhide[1 - $options[$key]] );
 740                         }
 741
 742                         $link = $this->makeOptionsLink( $linkMessage->text(),
 743                                 array( $key => 1 - $options[$key] ), $nondefaults );
 744                         $links[] = $this->msg( $msg )->rawParams( $link )->escaped();
 745                 }
 746
 747                 // show from this onward link
 748                 $timestamp = wfTimestampNow();
 749                 $now = $lang->userTimeAndDate( $timestamp, $user );
 750                 $timenow = $lang->userTime( $timestamp, $user );
 751                 $datenow = $lang->userDate( $timestamp, $user );
 752                 $rclinks = $this->msg( 'rclinks' )->rawParams( $cl, $dl, $lang->pipeList( $links ) )
 753                         ->parse();
 754                 $rclistfrom = $this->makeOptionsLink(
 755                         $this->msg( 'rclistfrom' )->rawParams( $now, $timenow, $datenow )->parse(),
 756                         array( 'from' => $timestamp ),
 757                         $nondefaults
 758                 );
 759
 760                 return "{$note}$rclinks<br />$rclistfrom";
 761         }
 762
 763         public function isIncludable() {
 764                 return true;
 765         }
 766 }