includes/specials/SpecialRecentchanges.php

   1 <?php
   2
   3 /**
   4  * Implements Special:Recentchanges
   5  * @ingroup SpecialPage
   6  */
   7 class SpecialRecentChanges extends SpecialPage {
   8         var $rcOptions, $rcSubpage;
   9
  10         public function __construct() {
  11                 parent::__construct( 'Recentchanges' );
  12                 $this->includable( true );
  13         }
  14
  15         /**
  16          * Get a FormOptions object containing the default options
  17          *
  18          * @return FormOptions
  19          */
  20         public function getDefaultOptions() {
  21                 global $wgUser;
  22                 $opts = new FormOptions();
  23
  24                 $opts->add( 'days',  (int)$wgUser->getOption( 'rcdays' ) );
  25                 $opts->add( 'limit', (int)$wgUser->getOption( 'rclimit' ) );
  26                 $opts->add( 'from', '' );
  27
  28                 $opts->add( 'hideminor',     $wgUser->getBoolOption( 'hideminor' ) );
  29                 $opts->add( 'hidebots',      true  );
  30                 $opts->add( 'hideanons',     false );
  31                 $opts->add( 'hideliu',       false );
  32                 $opts->add( 'hidepatrolled', $wgUser->getBoolOption( 'hidepatrolled' ) );
  33                 $opts->add( 'hidemyself',    false );
  34
  35                 $opts->add( 'namespace', '', FormOptions::INTNULL );
  36                 $opts->add( 'invert', false );
  37
  38                 $opts->add( 'categories', '' );
  39                 $opts->add( 'categories_any', false );
  40                 $opts->add( 'tagfilter', '' );
  41                 return $opts;
  42         }
  43
  44         /**
  45          * Create a FormOptions object with options as specified by the user
  46          *
  47          * @return FormOptions
  48          */
  49         public function setup( $parameters ) {
  50                 global $wgRequest;
  51
  52                 $opts = $this->getDefaultOptions();
  53                 $opts->fetchValuesFromRequest( $wgRequest );
  54
  55                 // Give precedence to subpage syntax
  56                 if( $parameters !== null ) {
  57                         $this->parseParameters( $parameters, $opts );
  58                 }
  59
  60                 $opts->validateIntBounds( 'limit', 0, 5000 );
  61                 return $opts;
  62         }
  63
  64         /**
  65          * Create a FormOptions object specific for feed requests and return it
  66          *
  67          * @return FormOptions
  68          */
  69         public function feedSetup() {
  70                 global $wgFeedLimit, $wgRequest;
  71                 $opts = $this->getDefaultOptions();
  72                 # Feed is cached on limit,hideminor,namespace; other params would randomly not work
  73                 $opts->fetchValuesFromRequest( $wgRequest, array( 'limit', 'hideminor', 'namespace' ) );
  74                 $opts->validateIntBounds( 'limit', 0, $wgFeedLimit );
  75                 return $opts;
  76         }
  77
  78         /**
  79          * Get the current FormOptions for this request
  80          */
  81         public function getOptions() {
  82                 if ( $this->rcOptions === null ) {
  83                         global $wgRequest;
  84                         $feedFormat = $wgRequest->getVal( 'feed' );
  85                         $this->rcOptions = $feedFormat ? $this->feedSetup() : $this->setup( $this->rcSubpage );
  86                 }
  87                 return $this->rcOptions;
  88         }
  89
  90
  91         /**
  92          * Main execution point
  93          *
  94          * @param $subpage string
  95          */
  96         public function execute( $subpage ) {
  97                 global $wgRequest, $wgOut;
  98                 $this->rcSubpage = $subpage;
  99                 $feedFormat = $wgRequest->getVal( 'feed' );
 100
 101                 # 10 seconds server-side caching max
 102                 $wgOut->setSquidMaxage( 10 );
 103                 # Check if the client has a cached version
 104                 $lastmod = $this->checkLastModified( $feedFormat );
 105                 if( $lastmod === false ) {
 106                         return;
 107                 }
 108
 109                 $opts = $this->getOptions();
 110                 $this->setHeaders();
 111                 $this->outputHeader();
 112
 113                 // Fetch results, prepare a batch link existence check query
 114                 $conds = $this->buildMainQueryConds( $opts );
 115                 $rows = $this->doMainQuery( $conds, $opts );
 116                 if( $rows === false ){
 117                         if( !$this->including() ) {
 118                                 $this->doHeader( $opts );
 119                         }
 120                         return;
 121                 }
 122
 123                 if( !$feedFormat ) {
 124                         $batch = new LinkBatch;
 125                         foreach( $rows as $row ) {
 126                                 $batch->add( NS_USER, $row->rc_user_text  );
 127                                 $batch->add( NS_USER_TALK, $row->rc_user_text  );
 128                                 $batch->add( $row->rc_namespace, $row->rc_title );
 129                         }
 130                         $batch->execute();
 131                 }
 132                 if( $feedFormat ) {
 133                         list( $changesFeed, $formatter ) = $this->getFeedObject( $feedFormat );
 134                         $changesFeed->execute( $formatter, $rows, $lastmod, $opts );
 135                 } else {
 136                         $this->webOutput( $rows, $opts );
 137                 }
 138
 139                 $rows->free();
 140         }
 141
 142         /**
 143          * Return an array with a ChangesFeed object and ChannelFeed object
 144          *
 145          * @return array
 146          */
 147         public function getFeedObject( $feedFormat ){
 148                 $changesFeed = new ChangesFeed( $feedFormat, 'rcfeed' );
 149                 $formatter = $changesFeed->getFeedObject(
 150                         wfMsgForContent( 'recentchanges' ),
 151                         wfMsgForContent( 'recentchanges-feed-description' )
 152                 );
 153                 return array( $changesFeed, $formatter );
 154         }
 155
 156         /**
 157          * Process $par and put options found if $opts
 158          * Mainly used when including the page
 159          *
 160          * @param $par String
 161          * @param $opts FormOptions
 162          */
 163         public function parseParameters( $par, FormOptions $opts ) {
 164                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 165                 foreach( $bits as $bit ) {
 166                         if( 'hidebots' === $bit ) $opts['hidebots'] = true;
 167                         if( 'bots' === $bit ) $opts['hidebots'] = false;
 168                         if( 'hideminor' === $bit ) $opts['hideminor'] = true;
 169                         if( 'minor' === $bit ) $opts['hideminor'] = false;
 170                         if( 'hideliu' === $bit ) $opts['hideliu'] = true;
 171                         if( 'hidepatrolled' === $bit ) $opts['hidepatrolled'] = true;
 172                         if( 'hideanons' === $bit ) $opts['hideanons'] = true;
 173                         if( 'hidemyself' === $bit ) $opts['hidemyself'] = true;
 174
 175                         if( is_numeric( $bit ) ) $opts['limit'] =  $bit;
 176
 177                         $m = array();
 178                         if( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) $opts['limit'] = $m[1];
 179                         if( preg_match( '/^days=(\d+)$/', $bit, $m ) ) $opts['days'] = $m[1];
 180                 }
 181         }
 182
 183         /**
 184          * Get last modified date, for client caching
 185          * Don't use this if we are using the patrol feature, patrol changes don't
 186          * update the timestamp
 187          *
 188          * @param $feedFormat String
 189          * @return string or false
 190          */
 191         public function checkLastModified( $feedFormat ) {
 192                 global $wgUseRCPatrol, $wgOut;
 193                 $dbr = wfGetDB( DB_SLAVE );
 194                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 195                 if( $feedFormat || !$wgUseRCPatrol ) {
 196                         if( $lastmod && $wgOut->checkLastModified( $lastmod ) ) {
 197                                 # Client cache fresh and headers sent, nothing more to do.
 198                                 return false;
 199                         }
 200                 }
 201                 return $lastmod;
 202         }
 203
 204         /**
 205          * Return an array of conditions depending of options set in $opts
 206          *
 207          * @param $opts FormOptions
 208          * @return array
 209          */
 210         public function buildMainQueryConds( FormOptions $opts ) {
 211                 global $wgUser;
 212
 213                 $dbr = wfGetDB( DB_SLAVE );
 214                 $conds = array();
 215
 216                 # It makes no sense to hide both anons and logged-in users
 217                 # Where this occurs, force anons to be shown
 218                 $forcebot = false;
 219                 if( $opts['hideanons'] && $opts['hideliu'] ){
 220                         # Check if the user wants to show bots only
 221                         if( $opts['hidebots'] ){
 222                                 $opts['hideanons'] = false;
 223                         } else {
 224                                 $forcebot = true;
 225                                 $opts['hidebots'] = false;
 226                         }
 227                 }
 228
 229                 // Calculate cutoff
 230                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 231                 $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 232                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 233
 234                 $fromValid = preg_match('/^[0-9]{14}$/', $opts['from']);
 235                 if( $fromValid && $opts['from'] > wfTimestamp(TS_MW,$cutoff) ) {
 236                         $cutoff = $dbr->timestamp($opts['from']);
 237                 } else {
 238                         $opts->reset( 'from' );
 239                 }
 240
 241                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 242
 243
 244                 $hidePatrol = $wgUser->useRCPatrol() && $opts['hidepatrolled'];
 245                 $hideLoggedInUsers = $opts['hideliu'] && !$forcebot;
 246                 $hideAnonymousUsers = $opts['hideanons'] && !$forcebot;
 247
 248                 if( $opts['hideminor'] )  $conds['rc_minor'] = 0;
 249                 if( $opts['hidebots'] )   $conds['rc_bot'] = 0;
 250                 if( $hidePatrol )         $conds['rc_patrolled'] = 0;
 251                 if( $forcebot )           $conds['rc_bot'] = 1;
 252                 if( $hideLoggedInUsers )  $conds[] = 'rc_user = 0';
 253                 if( $hideAnonymousUsers ) $conds[] = 'rc_user != 0';
 254
 255                 if( $opts['hidemyself'] ) {
 256                         if( $wgUser->getId() ) {
 257                                 $conds[] = 'rc_user != ' . $dbr->addQuotes( $wgUser->getId() );
 258                         } else {
 259                                 $conds[] = 'rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
 260                         }
 261                 }
 262
 263                 # Namespace filtering
 264                 if( $opts['namespace'] !== '' ) {
 265                         if( !$opts['invert'] ) {
 266                                 $conds[] = 'rc_namespace = ' . $dbr->addQuotes( $opts['namespace'] );
 267                         } else {
 268                                 $conds[] = 'rc_namespace != ' . $dbr->addQuotes( $opts['namespace'] );
 269                         }
 270                 }
 271
 272                 return $conds;
 273         }
 274
 275         /**
 276          * Process the query
 277          *
 278          * @param $conds array
 279          * @param $opts FormOptions
 280          * @return database result or false (for Recentchangeslinked only)
 281          */
 282         public function doMainQuery( $conds, $opts ) {
 283                 global $wgUser;
 284
 285                 $tables = array( 'recentchanges' );
 286                 $join_conds = array();
 287                 $query_options = array( 'USE INDEX' => array('recentchanges' => 'rc_timestamp') );
 288
 289                 $uid = $wgUser->getId();
 290                 $dbr = wfGetDB( DB_SLAVE );
 291                 $limit = $opts['limit'];
 292                 $namespace = $opts['namespace'];
 293                 $invert = $opts['invert'];
 294
 295                 // JOIN on watchlist for users
 296                 if( $uid ) {
 297                         $tables[] = 'watchlist';
 298                         $join_conds['watchlist'] = array('LEFT JOIN',
 299                                 "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace");
 300                 }
 301                 if ($wgUser->isAllowed("rollback")) {
 302                         $tables[] = 'page';
 303                         $join_conds['page'] = array('LEFT JOIN', 'rc_cur_id=page_id');
 304                 }
 305                 // Tag stuff.
 306                 $fields = array();
 307                 // Fields are * in this case, so let the function modify an empty array to keep it happy.
 308                 ChangeTags::modifyDisplayQuery(
 309                         $tables, $fields, $conds, $join_conds, $query_options, $opts['tagfilter']
 310                 );
 311
 312                 if ( !wfRunHooks( 'SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts, &$query_options ) ) )
 313                         return false;
 314
 315                 // Don't use the new_namespace_time timestamp index if:
 316                 // (a) "All namespaces" selected
 317                 // (b) We want all pages NOT in a certain namespaces (inverted)
 318                 // (c) There is a tag to filter on (use tag index instead)
 319                 // (d) UNION + sort/limit is not an option for the DBMS
 320                 if( is_null($namespace)
 321                         || $invert
 322                         || $opts['tagfilter'] != ''
 323                         || !$dbr->unionSupportsOrderAndLimit() )
 324                 {
 325                         $res = $dbr->select( $tables, '*', $conds, __METHOD__,
 326                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ) +
 327                                 $query_options,
 328                                 $join_conds );
 329                 // We have a new_namespace_time index! UNION over new=(0,1) and sort result set!
 330                 } else {
 331                         // New pages
 332                         $sqlNew = $dbr->selectSQLText( $tables, '*',
 333                                 array( 'rc_new' => 1 ) + $conds,
 334                                 __METHOD__,
 335                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 336                                         'USE INDEX' =>  array('recentchanges' => 'rc_timestamp') ),
 337                                 $join_conds );
 338                         // Old pages
 339                         $sqlOld = $dbr->selectSQLText( $tables, '*',
 340                                 array( 'rc_new' => 0 ) + $conds,
 341                                 __METHOD__,
 342                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 343                                         'USE INDEX' =>  array('recentchanges' => 'rc_timestamp') ),
 344                                 $join_conds );
 345                         # Join the two fast queries, and sort the result set
 346                         $sql = $dbr->unionQueries(array($sqlNew, $sqlOld), false).' ORDER BY rc_timestamp DESC';
 347                         $sql = $dbr->limitResult($sql, $limit, false);
 348                         $res = $dbr->query( $sql, __METHOD__ );
 349                 }
 350
 351                 return $res;
 352         }
 353
 354         /**
 355          * Send output to $wgOut, only called if not used feeds
 356          *
 357          * @param $rows array of database rows
 358          * @param $opts FormOptions
 359          */
 360         public function webOutput( $rows, $opts ) {
 361                 global $wgOut, $wgUser, $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
 362                 global $wgAllowCategorizedRecentChanges;
 363
 364                 $limit = $opts['limit'];
 365
 366                 if( !$this->including() ) {
 367                         // Output options box
 368                         $this->doHeader( $opts );
 369                 }
 370
 371                 // And now for the content
 372                 $wgOut->setFeedAppendQuery( $this->getFeedQuery() );
 373
 374                 if( $wgAllowCategorizedRecentChanges ) {
 375                         $this->filterByCategories( $rows, $opts );
 376                 }
 377
 378                 $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' );
 379                 $watcherCache = array();
 380
 381                 $dbr = wfGetDB( DB_SLAVE );
 382
 383                 $counter = 1;
 384                 $list = ChangesList::newFromUser( $wgUser );
 385
 386                 $s = $list->beginRecentChangesList();
 387                 foreach( $rows as $obj ) {
 388                         if( $limit == 0 ) break;
 389                         $rc = RecentChange::newFromRow( $obj );
 390                         $rc->counter = $counter++;
 391                         # Check if the page has been updated since the last visit
 392                         if( $wgShowUpdatedMarker && !empty($obj->wl_notificationtimestamp) ) {
 393                                 $rc->notificationtimestamp = ($obj->rc_timestamp >= $obj->wl_notificationtimestamp);
 394                         } else {
 395                                 $rc->notificationtimestamp = false; // Default
 396                         }
 397                         # Check the number of users watching the page
 398                         $rc->numberofWatchingusers = 0; // Default
 399                         if( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 400                                 if( !isset($watcherCache[$obj->rc_namespace][$obj->rc_title]) ) {
 401                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 402                                                  $dbr->selectField( 'watchlist',
 403                                                         'COUNT(*)',
 404                                                         array(
 405                                                                 'wl_namespace' => $obj->rc_namespace,
 406                                                                 'wl_title' => $obj->rc_title,
 407                                                         ),
 408                                                         __METHOD__ . '-watchers' );
 409                                 }
 410                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 411                         }
 412                         $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 413                         --$limit;
 414                 }
 415                 $s .= $list->endRecentChangesList();
 416                 $wgOut->addHTML( $s );
 417         }
 418
 419         /**
 420          * Get the query string to append to feed link URLs.
 421          * This is overridden by RCL to add the target parameter
 422          */
 423         public function getFeedQuery() {
 424                 return false;
 425         }
 426
 427         /**
 428          * Return the text to be displayed above the changes
 429          *
 430          * @param $opts FormOptions
 431          * @return String: XHTML
 432          */
 433         public function doHeader( $opts ) {
 434                 global $wgScript, $wgOut;
 435
 436                 $this->setTopText( $wgOut, $opts );
 437
 438                 $defaults = $opts->getAllValues();
 439                 $nondefaults = $opts->getChangedValues();
 440                 $opts->consumeValues( array( 'namespace', 'invert', 'tagfilter',
 441                         'categories', 'categories_any' ) );
 442
 443                 $panel = array();
 444                 $panel[] = $this->optionsPanel( $defaults, $nondefaults );
 445                 $panel[] = '<hr />';
 446
 447                 $extraOpts = $this->getExtraOptions( $opts );
 448                 $extraOptsCount = count( $extraOpts );
 449                 $count = 0;
 450                 $submit = ' ' . Xml::submitbutton( wfMsg( 'allpagessubmit' ) );
 451
 452                 $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
 453                 foreach( $extraOpts as $optionRow ) {
 454                         # Add submit button to the last row only
 455                         ++$count;
 456                         $addSubmit = $count === $extraOptsCount ? $submit : '';
 457
 458                         $out .= Xml::openElement( 'tr' );
 459                         if( is_array( $optionRow ) ) {
 460                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-label' ), $optionRow[0] );
 461                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-input' ), $optionRow[1] . $addSubmit );
 462                         } else {
 463                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-input', 'colspan' => 2 ), $optionRow . $addSubmit );
 464                         }
 465                         $out .= Xml::closeElement( 'tr' );
 466                 }
 467                 $out .= Xml::closeElement( 'table' );
 468
 469                 $unconsumed = $opts->getUnconsumedValues();
 470                 foreach( $unconsumed as $key => $value ) {
 471                         $out .= Xml::hidden( $key, $value );
 472                 }
 473
 474                 $t = $this->getTitle();
 475                 $out .= Xml::hidden( 'title', $t->getPrefixedText() );
 476                 $form = Xml::tags( 'form', array( 'action' => $wgScript ), $out );
 477                 $panel[] = $form;
 478                 $panelString = implode( "\n", $panel );
 479
 480                 $wgOut->addHTML(
 481                         Xml::fieldset( wfMsg( 'recentchanges-legend' ), $panelString, array( 'class' => 'rcoptions' ) )
 482                 );
 483
 484                 $wgOut->addHTML( ChangesList::flagLegend() );
 485
 486                 $this->setBottomText( $wgOut, $opts );
 487         }
 488
 489         /**
 490          * Get options to be displayed in a form
 491          *
 492          * @param $opts FormOptions
 493          * @return array
 494          */
 495         function getExtraOptions( $opts ){
 496                 $extraOpts = array();
 497                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 498
 499                 global $wgAllowCategorizedRecentChanges;
 500                 if( $wgAllowCategorizedRecentChanges ) {
 501                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 502                 }
 503
 504                 $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
 505                 if ( count($tagFilter) )
 506                         $extraOpts['tagfilter'] = $tagFilter;
 507
 508                 wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
 509                 return $extraOpts;
 510         }
 511
 512         /**
 513          * Send the text to be displayed above the options
 514          *
 515          * @param $out OutputPage
 516          * @param $opts FormOptions
 517          */
 518         function setTopText( OutputPage $out, FormOptions $opts ){
 519                 $out->addWikiText( wfMsgForContentNoTrans( 'recentchangestext' ) );
 520         }
 521
 522         /**
 523          * Send the text to be displayed after the options, for use in
 524          * Recentchangeslinked
 525          *
 526          * @param $out OutputPage
 527          * @param $opts FormOptions
 528          */
 529         function setBottomText( OutputPage $out, FormOptions $opts ){}
 530
 531         /**
 532          * Creates the choose namespace selection
 533          *
 534          * @param $opts FormOptions
 535          * @return string
 536          */
 537         protected function namespaceFilterForm( FormOptions $opts ) {
 538                 $nsSelect = Xml::namespaceSelector( $opts['namespace'], '' );
 539                 $nsLabel = Xml::label( wfMsg('namespace'), 'namespace' );
 540                 $invert = Xml::checkLabel( wfMsg('invert'), 'invert', 'nsinvert', $opts['invert'] );
 541                 return array( $nsLabel, "$nsSelect $invert" );
 542         }
 543
 544         /**
 545          * Create a input to filter changes by categories
 546          *
 547          * @param $opts FormOptions
 548          * @return array
 549          */
 550         protected function categoryFilterForm( FormOptions $opts ) {
 551                 list( $label, $input ) = Xml::inputLabelSep( wfMsg('rc_categories'),
 552                         'categories', 'mw-categories', false, $opts['categories'] );
 553
 554                 $input .= ' ' . Xml::checkLabel( wfMsg('rc_categories_any'),
 555                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 556
 557                 return array( $label, $input );
 558         }
 559
 560         /**
 561          * Filter $rows by categories set in $opts
 562          *
 563          * @param $rows array of database rows
 564          * @param $opts FormOptions
 565          */
 566         function filterByCategories( &$rows, FormOptions $opts ) {
 567                 $categories = array_map( 'trim', explode( '|' , $opts['categories'] ) );
 568
 569                 if( !count( $categories ) ) {
 570                         return;
 571                 }
 572
 573                 # Filter categories
 574                 $cats = array();
 575                 foreach( $categories as $cat ) {
 576                         $cat = trim( $cat );
 577                         if( $cat == '' ) continue;
 578                         $cats[] = $cat;
 579                 }
 580
 581                 # Filter articles
 582                 $articles = array();
 583                 $a2r = array();
 584                 $rowsarr = array();
 585                 foreach( $rows AS $k => $r ) {
 586                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 587                         $id = $nt->getArticleID();
 588                         if( $id == 0 ) continue; # Page might have been deleted...
 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                 # Look up
 604                 $c = new Categoryfinder;
 605                 $c->seed( $articles, $cats, $opts['categories_any'] ? "OR" : "AND" ) ;
 606                 $match = $c->run();
 607
 608                 # Filter
 609                 $newrows = array();
 610                 foreach( $match AS $id ) {
 611                         foreach( $a2r[$id] AS $rev ) {
 612                                 $k = $rev;
 613                                 $newrows[$k] = $rowsarr[$k];
 614                         }
 615                 }
 616                 $rows = $newrows;
 617         }
 618
 619         /**
 620          * Makes change an option link which carries all the other options
 621          * @param $title see Title
 622          * @param $override
 623          * @param $options
 624          */
 625         function makeOptionsLink( $title, $override, $options, $active = false ) {
 626                 global $wgUser;
 627                 $sk = $wgUser->getSkin();
 628                 $params = $override + $options;
 629                 if ( $active ) {
 630                         return $sk->link( $this->getTitle(), '<strong>' . htmlspecialchars( $title ) . '</strong>',
 631                                                           array(), $params, array( 'known' ) );
 632                 } else {
 633                         return $sk->link( $this->getTitle(), htmlspecialchars( $title ), array() , $params, array( 'known' ) );
 634                 }
 635         }
 636
 637         /**
 638          * Creates the options panel.
 639          * @param $defaults array
 640          * @param $nondefaults array
 641          */
 642         function optionsPanel( $defaults, $nondefaults ) {
 643                 global $wgLang, $wgUser, $wgRCLinkLimits, $wgRCLinkDays;
 644
 645                 $options = $nondefaults + $defaults;
 646
 647                 $note = '';
 648                 if( !wfEmptyMsg( 'rclegend', wfMsg('rclegend') ) ) {
 649                         $note .= '<div class="mw-rclegend">' . wfMsgExt( 'rclegend', array('parseinline') ) . "</div>\n";
 650                 }
 651                 if( $options['from'] ) {
 652                         $note .= wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 653                                 $wgLang->formatNum( $options['limit'] ),
 654                                 $wgLang->timeanddate( $options['from'], true ),
 655                                 $wgLang->date( $options['from'], true ),
 656                                 $wgLang->time( $options['from'], true ) ) . '<br />';
 657                 }
 658
 659                 # Sort data for display and make sure it's unique after we've added user data.
 660                 $wgRCLinkLimits[] = $options['limit'];
 661                 $wgRCLinkDays[] = $options['days'];
 662                 sort( $wgRCLinkLimits );
 663                 sort( $wgRCLinkDays );
 664                 $wgRCLinkLimits = array_unique( $wgRCLinkLimits );
 665                 $wgRCLinkDays = array_unique( $wgRCLinkDays );
 666
 667                 // limit links
 668                 foreach( $wgRCLinkLimits as $value ) {
 669                         $cl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
 670                                 array( 'limit' => $value ), $nondefaults, $value == $options['limit'] ) ;
 671                 }
 672                 $cl = $wgLang->pipeList( $cl );
 673
 674                 // day links, reset 'from' to none
 675                 foreach( $wgRCLinkDays as $value ) {
 676                         $dl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
 677                                 array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] ) ;
 678                 }
 679                 $dl = $wgLang->pipeList( $dl );
 680
 681
 682                 // show/hide links
 683                 $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ) );
 684                 $minorLink = $this->makeOptionsLink( $showhide[1-$options['hideminor']],
 685                         array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 686                 $botLink = $this->makeOptionsLink( $showhide[1-$options['hidebots']],
 687                         array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 688                 $anonsLink = $this->makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 689                         array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 690                 $liuLink   = $this->makeOptionsLink( $showhide[1-$options['hideliu']],
 691                         array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 692                 $patrLink  = $this->makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 693                         array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 694                 $myselfLink = $this->makeOptionsLink( $showhide[1-$options['hidemyself']],
 695                         array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 696
 697                 $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 698                 $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 699                 $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 700                 $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 701                 if( $wgUser->useRCPatrol() )
 702                         $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 703                 $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 704                 $hl = $wgLang->pipeList( $links );
 705
 706                 // show from this onward link
 707                 $now = $wgLang->timeanddate( wfTimestampNow(), true );
 708                 $tl =  $this->makeOptionsLink( $now, array( 'from' => wfTimestampNow() ), $nondefaults );
 709
 710                 $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter' ),
 711                         $cl, $dl, $hl );
 712                 $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter' ), $tl );
 713                 return "{$note}$rclinks<br />$rclistfrom";
 714         }
 715 }