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 IncludableSpecialPage {
  30         var $rcOptions, $rcSubpage;
  31
  32         public function __construct( $name = 'Recentchanges' ) {
  33                 parent::__construct( $name );
  34         }
  35
  36         /**
  37          * Get a FormOptions object containing the default options
  38          *
  39          * @return FormOptions
  40          */
  41         public function getDefaultOptions() {
  42                 global $wgUser;
  43                 $opts = new FormOptions();
  44
  45                 $opts->add( 'days',  (int)$wgUser->getOption( 'rcdays' ) );
  46                 $opts->add( 'limit', (int)$wgUser->getOption( 'rclimit' ) );
  47                 $opts->add( 'from', '' );
  48
  49                 $opts->add( 'hideminor',     $wgUser->getBoolOption( 'hideminor' ) );
  50                 $opts->add( 'hidebots',      true  );
  51                 $opts->add( 'hideanons',     false );
  52                 $opts->add( 'hideliu',       false );
  53                 $opts->add( 'hidepatrolled', $wgUser->getBoolOption( 'hidepatrolled' ) );
  54                 $opts->add( 'hidemyself',    false );
  55
  56                 $opts->add( 'namespace', '', FormOptions::INTNULL );
  57                 $opts->add( 'invert', false );
  58
  59                 $opts->add( 'categories', '' );
  60                 $opts->add( 'categories_any', false );
  61                 $opts->add( 'tagfilter', '' );
  62                 return $opts;
  63         }
  64
  65         /**
  66          * Create a FormOptions object with options as specified by the user
  67          *
  68          * @return FormOptions
  69          */
  70         public function setup( $parameters ) {
  71                 global $wgRequest;
  72
  73                 $opts = $this->getDefaultOptions();
  74                 $opts->fetchValuesFromRequest( $wgRequest );
  75
  76                 // Give precedence to subpage syntax
  77                 if( $parameters !== null ) {
  78                         $this->parseParameters( $parameters, $opts );
  79                 }
  80
  81                 $opts->validateIntBounds( 'limit', 0, 5000 );
  82                 return $opts;
  83         }
  84
  85         /**
  86          * Create a FormOptions object specific for feed requests and return it
  87          *
  88          * @return FormOptions
  89          */
  90         public function feedSetup() {
  91                 global $wgFeedLimit, $wgRequest;
  92                 $opts = $this->getDefaultOptions();
  93                 # Feed is cached on limit,hideminor,namespace; other params would randomly not work
  94                 $opts->fetchValuesFromRequest( $wgRequest, array( 'limit', 'hideminor', 'namespace' ) );
  95                 $opts->validateIntBounds( 'limit', 0, $wgFeedLimit );
  96                 return $opts;
  97         }
  98
  99         /**
 100          * Get the current FormOptions for this request
 101          */
 102         public function getOptions() {
 103                 if ( $this->rcOptions === null ) {
 104                         global $wgRequest;
 105                         $feedFormat = $wgRequest->getVal( 'feed' );
 106                         $this->rcOptions = $feedFormat ? $this->feedSetup() : $this->setup( $this->rcSubpage );
 107                 }
 108                 return $this->rcOptions;
 109         }
 110
 111
 112         /**
 113          * Main execution point
 114          *
 115          * @param $subpage String
 116          */
 117         public function execute( $subpage ) {
 118                 global $wgRequest, $wgOut;
 119                 $this->rcSubpage = $subpage;
 120                 $feedFormat = $wgRequest->getVal( 'feed' );
 121
 122                 # 10 seconds server-side caching max
 123                 $wgOut->setSquidMaxage( 10 );
 124                 # Check if the client has a cached version
 125                 $lastmod = $this->checkLastModified( $feedFormat );
 126                 if( $lastmod === false ) {
 127                         return;
 128                 }
 129
 130                 $opts = $this->getOptions();
 131                 $this->setHeaders();
 132                 $this->outputHeader();
 133
 134                 // Fetch results, prepare a batch link existence check query
 135                 $conds = $this->buildMainQueryConds( $opts );
 136                 $rows = $this->doMainQuery( $conds, $opts );
 137                 if( $rows === false ){
 138                         if( !$this->including() ) {
 139                                 $this->doHeader( $opts );
 140                         }
 141                         return;
 142                 }
 143
 144                 if( !$feedFormat ) {
 145                         $batch = new LinkBatch;
 146                         foreach( $rows as $row ) {
 147                                 $batch->add( NS_USER, $row->rc_user_text  );
 148                                 $batch->add( NS_USER_TALK, $row->rc_user_text  );
 149                                 $batch->add( $row->rc_namespace, $row->rc_title );
 150                         }
 151                         $batch->execute();
 152                 }
 153                 if( $feedFormat ) {
 154                         list( $changesFeed, $formatter ) = $this->getFeedObject( $feedFormat );
 155                         $changesFeed->execute( $formatter, $rows, $lastmod, $opts );
 156                 } else {
 157                         $this->webOutput( $rows, $opts );
 158                 }
 159
 160                 $rows->free();
 161         }
 162
 163         /**
 164          * Return an array with a ChangesFeed object and ChannelFeed object
 165          *
 166          * @return Array
 167          */
 168         public function getFeedObject( $feedFormat ){
 169                 $changesFeed = new ChangesFeed( $feedFormat, 'rcfeed' );
 170                 $formatter = $changesFeed->getFeedObject(
 171                         wfMsgForContent( 'recentchanges' ),
 172                         wfMsgForContent( 'recentchanges-feed-description' )
 173                 );
 174                 return array( $changesFeed, $formatter );
 175         }
 176
 177         /**
 178          * Process $par and put options found if $opts
 179          * Mainly used when including the page
 180          *
 181          * @param $par String
 182          * @param $opts FormOptions
 183          */
 184         public function parseParameters( $par, FormOptions $opts ) {
 185                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 186                 foreach( $bits as $bit ) {
 187                         if( 'hidebots' === $bit ) $opts['hidebots'] = true;
 188                         if( 'bots' === $bit ) $opts['hidebots'] = false;
 189                         if( 'hideminor' === $bit ) $opts['hideminor'] = true;
 190                         if( 'minor' === $bit ) $opts['hideminor'] = false;
 191                         if( 'hideliu' === $bit ) $opts['hideliu'] = true;
 192                         if( 'hidepatrolled' === $bit ) $opts['hidepatrolled'] = true;
 193                         if( 'hideanons' === $bit ) $opts['hideanons'] = true;
 194                         if( 'hidemyself' === $bit ) $opts['hidemyself'] = true;
 195
 196                         if( is_numeric( $bit ) ) $opts['limit'] =  $bit;
 197
 198                         $m = array();
 199                         if( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) $opts['limit'] = $m[1];
 200                         if( preg_match( '/^days=(\d+)$/', $bit, $m ) ) $opts['days'] = $m[1];
 201                 }
 202         }
 203
 204         /**
 205          * Get last modified date, for client caching
 206          * Don't use this if we are using the patrol feature, patrol changes don't
 207          * update the timestamp
 208          *
 209          * @param $feedFormat String
 210          * @return String or false
 211          */
 212         public function checkLastModified( $feedFormat ) {
 213                 global $wgUseRCPatrol, $wgOut;
 214                 $dbr = wfGetDB( DB_SLAVE );
 215                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 216                 if( $feedFormat || !$wgUseRCPatrol ) {
 217                         if( $lastmod && $wgOut->checkLastModified( $lastmod ) ) {
 218                                 # Client cache fresh and headers sent, nothing more to do.
 219                                 return false;
 220                         }
 221                 }
 222                 return $lastmod;
 223         }
 224
 225         /**
 226          * Return an array of conditions depending of options set in $opts
 227          *
 228          * @param $opts FormOptions
 229          * @return array
 230          */
 231         public function buildMainQueryConds( FormOptions $opts ) {
 232                 global $wgUser;
 233
 234                 $dbr = wfGetDB( DB_SLAVE );
 235                 $conds = array();
 236
 237                 # It makes no sense to hide both anons and logged-in users
 238                 # Where this occurs, force anons to be shown
 239                 $forcebot = false;
 240                 if( $opts['hideanons'] && $opts['hideliu'] ){
 241                         # Check if the user wants to show bots only
 242                         if( $opts['hidebots'] ){
 243                                 $opts['hideanons'] = false;
 244                         } else {
 245                                 $forcebot = true;
 246                                 $opts['hidebots'] = false;
 247                         }
 248                 }
 249
 250                 // Calculate cutoff
 251                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 252                 $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 253                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 254
 255                 $fromValid = preg_match('/^[0-9]{14}$/', $opts['from']);
 256                 if( $fromValid && $opts['from'] > wfTimestamp(TS_MW,$cutoff) ) {
 257                         $cutoff = $dbr->timestamp($opts['from']);
 258                 } else {
 259                         $opts->reset( 'from' );
 260                 }
 261
 262                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 263
 264
 265                 $hidePatrol = $wgUser->useRCPatrol() && $opts['hidepatrolled'];
 266                 $hideLoggedInUsers = $opts['hideliu'] && !$forcebot;
 267                 $hideAnonymousUsers = $opts['hideanons'] && !$forcebot;
 268
 269                 if( $opts['hideminor'] )  $conds['rc_minor'] = 0;
 270                 if( $opts['hidebots'] )   $conds['rc_bot'] = 0;
 271                 if( $hidePatrol )         $conds['rc_patrolled'] = 0;
 272                 if( $forcebot )           $conds['rc_bot'] = 1;
 273                 if( $hideLoggedInUsers )  $conds[] = 'rc_user = 0';
 274                 if( $hideAnonymousUsers ) $conds[] = 'rc_user != 0';
 275
 276                 if( $opts['hidemyself'] ) {
 277                         if( $wgUser->getId() ) {
 278                                 $conds[] = 'rc_user != ' . $dbr->addQuotes( $wgUser->getId() );
 279                         } else {
 280                                 $conds[] = 'rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
 281                         }
 282                 }
 283
 284                 # Namespace filtering
 285                 if( $opts['namespace'] !== '' ) {
 286                         if( !$opts['invert'] ) {
 287                                 $conds[] = 'rc_namespace = ' . $dbr->addQuotes( $opts['namespace'] );
 288                         } else {
 289                                 $conds[] = 'rc_namespace != ' . $dbr->addQuotes( $opts['namespace'] );
 290                         }
 291                 }
 292
 293                 return $conds;
 294         }
 295
 296         /**
 297          * Process the query
 298          *
 299          * @param $conds Array
 300          * @param $opts FormOptions
 301          * @return database result or false (for Recentchangeslinked only)
 302          */
 303         public function doMainQuery( $conds, $opts ) {
 304                 global $wgUser;
 305
 306                 $tables = array( 'recentchanges' );
 307                 $join_conds = array();
 308                 $query_options = array( 'USE INDEX' => array('recentchanges' => 'rc_timestamp') );
 309
 310                 $uid = $wgUser->getId();
 311                 $dbr = wfGetDB( DB_SLAVE );
 312                 $limit = $opts['limit'];
 313                 $namespace = $opts['namespace'];
 314                 $select = '*';
 315                 $invert = $opts['invert'];
 316
 317                 // JOIN on watchlist for users
 318                 if( $uid ) {
 319                         $tables[] = 'watchlist';
 320                         $join_conds['watchlist'] = array('LEFT JOIN',
 321                                 "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace");
 322                 }
 323                 if ($wgUser->isAllowed("rollback")) {
 324                         $tables[] = 'page';
 325                         $join_conds['page'] = array('LEFT JOIN', 'rc_cur_id=page_id');
 326                 }
 327                 if ( !$this->including() ) {
 328                         // Tag stuff.
 329                         // Doesn't work when transcluding. See bug 23293
 330                         $fields = array();
 331                         // Fields are * in this case, so let the function modify an empty array to keep it happy.
 332                         ChangeTags::modifyDisplayQuery(
 333                                 $tables, $fields, $conds, $join_conds, $query_options, $opts['tagfilter']
 334                         );
 335                 }
 336
 337                 if ( !wfRunHooks( 'SpecialRecentChangesQuery', array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$select ) ) )
 338                         return false;
 339
 340                 // Don't use the new_namespace_time timestamp index if:
 341                 // (a) "All namespaces" selected
 342                 // (b) We want all pages NOT in a certain namespaces (inverted)
 343                 // (c) There is a tag to filter on (use tag index instead)
 344                 // (d) UNION + sort/limit is not an option for the DBMS
 345                 if( is_null( $namespace )
 346                         || ( $invert && !is_null( $namespace ) )
 347                         || $opts['tagfilter'] != ''
 348                         || !$dbr->unionSupportsOrderAndLimit() )
 349                 {
 350                         $res = $dbr->select( $tables, '*', $conds, __METHOD__,
 351                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ) +
 352                                 $query_options,
 353                                 $join_conds );
 354                 // We have a new_namespace_time index! UNION over new=(0,1) and sort result set!
 355                 } else {
 356                         // New pages
 357                         $sqlNew = $dbr->selectSQLText( $tables, $select,
 358                                 array( 'rc_new' => 1 ) + $conds,
 359                                 __METHOD__,
 360                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 361                                         'USE INDEX' =>  array('recentchanges' => 'rc_timestamp') ),
 362                                 $join_conds );
 363                         // Old pages
 364                         $sqlOld = $dbr->selectSQLText( $tables, '*',
 365                                 array( 'rc_new' => 0 ) + $conds,
 366                                 __METHOD__,
 367                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 368                                         'USE INDEX' =>  array('recentchanges' => 'rc_timestamp') ),
 369                                 $join_conds );
 370                         # Join the two fast queries, and sort the result set
 371                         $sql = $dbr->unionQueries(array($sqlNew, $sqlOld), false).' ORDER BY rc_timestamp DESC';
 372                         $sql = $dbr->limitResult($sql, $limit, false);
 373                         $res = $dbr->query( $sql, __METHOD__ );
 374                 }
 375
 376                 return $res;
 377         }
 378
 379         /**
 380          * Send output to $wgOut, only called if not used feeds
 381          *
 382          * @param $rows Array of database rows
 383          * @param $opts FormOptions
 384          */
 385         public function webOutput( $rows, $opts ) {
 386                 global $wgOut, $wgUser, $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
 387                 global $wgAllowCategorizedRecentChanges;
 388
 389                 $limit = $opts['limit'];
 390
 391                 if( !$this->including() ) {
 392                         // Output options box
 393                         $this->doHeader( $opts );
 394                 }
 395
 396                 // And now for the content
 397                 $wgOut->setFeedAppendQuery( $this->getFeedQuery() );
 398
 399                 if( $wgAllowCategorizedRecentChanges ) {
 400                         $this->filterByCategories( $rows, $opts );
 401                 }
 402
 403                 $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' );
 404                 $watcherCache = array();
 405
 406                 $dbr = wfGetDB( DB_SLAVE );
 407
 408                 $counter = 1;
 409                 $list = ChangesList::newFromUser( $wgUser );
 410
 411                 $s = $list->beginRecentChangesList();
 412                 foreach( $rows as $obj ) {
 413                         if( $limit == 0 ) break;
 414                         $rc = RecentChange::newFromRow( $obj );
 415                         $rc->counter = $counter++;
 416                         # Check if the page has been updated since the last visit
 417                         if( $wgShowUpdatedMarker && !empty($obj->wl_notificationtimestamp) ) {
 418                                 $rc->notificationtimestamp = ($obj->rc_timestamp >= $obj->wl_notificationtimestamp);
 419                         } else {
 420                                 $rc->notificationtimestamp = false; // Default
 421                         }
 422                         # Check the number of users watching the page
 423                         $rc->numberofWatchingusers = 0; // Default
 424                         if( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 425                                 if( !isset($watcherCache[$obj->rc_namespace][$obj->rc_title]) ) {
 426                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 427                                                  $dbr->selectField( 'watchlist',
 428                                                         'COUNT(*)',
 429                                                         array(
 430                                                                 'wl_namespace' => $obj->rc_namespace,
 431                                                                 'wl_title' => $obj->rc_title,
 432                                                         ),
 433                                                         __METHOD__ . '-watchers' );
 434                                 }
 435                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 436                         }
 437                         $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 438                         --$limit;
 439                 }
 440                 $s .= $list->endRecentChangesList();
 441                 $wgOut->addHTML( $s );
 442         }
 443
 444         /**
 445          * Get the query string to append to feed link URLs.
 446          * This is overridden by RCL to add the target parameter
 447          */
 448         public function getFeedQuery() {
 449                 return false;
 450         }
 451
 452         /**
 453          * Return the text to be displayed above the changes
 454          *
 455          * @param $opts FormOptions
 456          * @return String: XHTML
 457          */
 458         public function doHeader( $opts ) {
 459                 global $wgScript, $wgOut;
 460
 461                 $this->setTopText( $wgOut, $opts );
 462
 463                 $defaults = $opts->getAllValues();
 464                 $nondefaults = $opts->getChangedValues();
 465                 $opts->consumeValues( array( 'namespace', 'invert', 'tagfilter',
 466                         'categories', 'categories_any' ) );
 467
 468                 $panel = array();
 469                 $panel[] = $this->optionsPanel( $defaults, $nondefaults );
 470                 $panel[] = '<hr />';
 471
 472                 $extraOpts = $this->getExtraOptions( $opts );
 473                 $extraOptsCount = count( $extraOpts );
 474                 $count = 0;
 475                 $submit = ' ' . Xml::submitbutton( wfMsg( 'allpagessubmit' ) );
 476
 477                 $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
 478                 foreach( $extraOpts as $optionRow ) {
 479                         # Add submit button to the last row only
 480                         ++$count;
 481                         $addSubmit = $count === $extraOptsCount ? $submit : '';
 482
 483                         $out .= Xml::openElement( 'tr' );
 484                         if( is_array( $optionRow ) ) {
 485                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-label' ), $optionRow[0] );
 486                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-input' ), $optionRow[1] . $addSubmit );
 487                         } else {
 488                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-input', 'colspan' => 2 ), $optionRow . $addSubmit );
 489                         }
 490                         $out .= Xml::closeElement( 'tr' );
 491                 }
 492                 $out .= Xml::closeElement( 'table' );
 493
 494                 $unconsumed = $opts->getUnconsumedValues();
 495                 foreach( $unconsumed as $key => $value ) {
 496                         $out .= Html::hidden( $key, $value );
 497                 }
 498
 499                 $t = $this->getTitle();
 500                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 501                 $form = Xml::tags( 'form', array( 'action' => $wgScript ), $out );
 502                 $panel[] = $form;
 503                 $panelString = implode( "\n", $panel );
 504
 505                 $wgOut->addHTML(
 506                         Xml::fieldset( wfMsg( 'recentchanges-legend' ), $panelString, array( 'class' => 'rcoptions' ) )
 507                 );
 508
 509                 $this->setBottomText( $wgOut, $opts );
 510         }
 511
 512         /**
 513          * Get options to be displayed in a form
 514          *
 515          * @param $opts FormOptions
 516          * @return Array
 517          */
 518         function getExtraOptions( $opts ){
 519                 $extraOpts = array();
 520                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 521
 522                 global $wgAllowCategorizedRecentChanges;
 523                 if( $wgAllowCategorizedRecentChanges ) {
 524                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 525                 }
 526
 527                 $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
 528                 if ( count($tagFilter) )
 529                         $extraOpts['tagfilter'] = $tagFilter;
 530
 531                 wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
 532                 return $extraOpts;
 533         }
 534
 535         /**
 536          * Send the text to be displayed above the options
 537          *
 538          * @param $out OutputPage
 539          * @param $opts FormOptions
 540          */
 541         function setTopText( OutputPage $out, FormOptions $opts ){
 542                 $out->addWikiText( wfMsgForContentNoTrans( 'recentchangestext' ) );
 543         }
 544
 545         /**
 546          * Send the text to be displayed after the options, for use in
 547          * Recentchangeslinked
 548          *
 549          * @param $out OutputPage
 550          * @param $opts FormOptions
 551          */
 552         function setBottomText( OutputPage $out, FormOptions $opts ){}
 553
 554         /**
 555          * Creates the choose namespace selection
 556          *
 557          * @param $opts FormOptions
 558          * @return String
 559          */
 560         protected function namespaceFilterForm( FormOptions $opts ) {
 561                 $nsSelect = Xml::namespaceSelector( $opts['namespace'], '' );
 562                 $nsLabel = Xml::label( wfMsg('namespace'), 'namespace' );
 563                 $invert = Xml::checkLabel( wfMsg('invert'), 'invert', 'nsinvert', $opts['invert'] );
 564                 return array( $nsLabel, "$nsSelect $invert" );
 565         }
 566
 567         /**
 568          * Create a input to filter changes by categories
 569          *
 570          * @param $opts FormOptions
 571          * @return Array
 572          */
 573         protected function categoryFilterForm( FormOptions $opts ) {
 574                 list( $label, $input ) = Xml::inputLabelSep( wfMsg('rc_categories'),
 575                         'categories', 'mw-categories', false, $opts['categories'] );
 576
 577                 $input .= ' ' . Xml::checkLabel( wfMsg('rc_categories_any'),
 578                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 579
 580                 return array( $label, $input );
 581         }
 582
 583         /**
 584          * Filter $rows by categories set in $opts
 585          *
 586          * @param $rows Array of database rows
 587          * @param $opts FormOptions
 588          */
 589         function filterByCategories( &$rows, FormOptions $opts ) {
 590                 $categories = array_map( 'trim', explode( '|' , $opts['categories'] ) );
 591
 592                 if( !count( $categories ) ) {
 593                         return;
 594                 }
 595
 596                 # Filter categories
 597                 $cats = array();
 598                 foreach( $categories as $cat ) {
 599                         $cat = trim( $cat );
 600                         if( $cat == '' ) continue;
 601                         $cats[] = $cat;
 602                 }
 603
 604                 # Filter articles
 605                 $articles = array();
 606                 $a2r = array();
 607                 $rowsarr = array();
 608                 foreach( $rows AS $k => $r ) {
 609                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 610                         $id = $nt->getArticleID();
 611                         if( $id == 0 ) continue; # Page might have been deleted...
 612                         if( !in_array( $id, $articles ) ) {
 613                                 $articles[] = $id;
 614                         }
 615                         if( !isset( $a2r[$id] ) ) {
 616                                 $a2r[$id] = array();
 617                         }
 618                         $a2r[$id][] = $k;
 619                         $rowsarr[$k] = $r;
 620                 }
 621
 622                 # Shortcut?
 623                 if( !count( $articles ) || !count( $cats ) )
 624                         return ;
 625
 626                 # Look up
 627                 $c = new Categoryfinder;
 628                 $c->seed( $articles, $cats, $opts['categories_any'] ? "OR" : "AND" ) ;
 629                 $match = $c->run();
 630
 631                 # Filter
 632                 $newrows = array();
 633                 foreach( $match AS $id ) {
 634                         foreach( $a2r[$id] AS $rev ) {
 635                                 $k = $rev;
 636                                 $newrows[$k] = $rowsarr[$k];
 637                         }
 638                 }
 639                 $rows = $newrows;
 640         }
 641
 642         /**
 643          * Makes change an option link which carries all the other options
 644          *
 645          * @param $title Title
 646          * @param $override Array: options to override
 647          * @param $options Array: current options
 648          * @param $active Boolean: whether to show the link in bold
 649          */
 650         function makeOptionsLink( $title, $override, $options, $active = false ) {
 651                 global $wgUser;
 652                 $sk = $wgUser->getSkin();
 653                 $params = $override + $options;
 654                 if ( $active ) {
 655                         return $sk->link( $this->getTitle(), '<strong>' . htmlspecialchars( $title ) . '</strong>',
 656                                                           array(), $params, array( 'known' ) );
 657                 } else {
 658                         return $sk->link( $this->getTitle(), htmlspecialchars( $title ), array() , $params, array( 'known' ) );
 659                 }
 660         }
 661
 662         /**
 663          * Creates the options panel.
 664          *
 665          * @param $defaults Array
 666          * @param $nondefaults Array
 667          */
 668         function optionsPanel( $defaults, $nondefaults ) {
 669                 global $wgLang, $wgUser, $wgRCLinkLimits, $wgRCLinkDays;
 670
 671                 $options = $nondefaults + $defaults;
 672
 673                 $note = '';
 674                 if( !wfEmptyMsg( 'rclegend', wfMsg('rclegend') ) ) {
 675                         $note .= '<div class="mw-rclegend">' . wfMsgExt( 'rclegend', array('parseinline') ) . "</div>\n";
 676                 }
 677                 if( $options['from'] ) {
 678                         $note .= wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 679                                 $wgLang->formatNum( $options['limit'] ),
 680                                 $wgLang->timeanddate( $options['from'], true ),
 681                                 $wgLang->date( $options['from'], true ),
 682                                 $wgLang->time( $options['from'], true ) ) . '<br />';
 683                 }
 684
 685                 # Sort data for display and make sure it's unique after we've added user data.
 686                 $wgRCLinkLimits[] = $options['limit'];
 687                 $wgRCLinkDays[] = $options['days'];
 688                 sort( $wgRCLinkLimits );
 689                 sort( $wgRCLinkDays );
 690                 $wgRCLinkLimits = array_unique( $wgRCLinkLimits );
 691                 $wgRCLinkDays = array_unique( $wgRCLinkDays );
 692
 693                 // limit links
 694                 foreach( $wgRCLinkLimits as $value ) {
 695                         $cl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
 696                                 array( 'limit' => $value ), $nondefaults, $value == $options['limit'] ) ;
 697                 }
 698                 $cl = $wgLang->pipeList( $cl );
 699
 700                 // day links, reset 'from' to none
 701                 foreach( $wgRCLinkDays as $value ) {
 702                         $dl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
 703                                 array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] ) ;
 704                 }
 705                 $dl = $wgLang->pipeList( $dl );
 706
 707
 708                 // show/hide links
 709                 $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ) );
 710                 $minorLink = $this->makeOptionsLink( $showhide[1-$options['hideminor']],
 711                         array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 712                 $botLink = $this->makeOptionsLink( $showhide[1-$options['hidebots']],
 713                         array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 714                 $anonsLink = $this->makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 715                         array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 716                 $liuLink   = $this->makeOptionsLink( $showhide[1-$options['hideliu']],
 717                         array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 718                 $patrLink  = $this->makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 719                         array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 720                 $myselfLink = $this->makeOptionsLink( $showhide[1-$options['hidemyself']],
 721                         array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 722
 723                 $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 724                 $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 725                 $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 726                 $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 727                 if( $wgUser->useRCPatrol() )
 728                         $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 729                 $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 730                 $hl = $wgLang->pipeList( $links );
 731
 732                 // show from this onward link
 733                 $now = $wgLang->timeanddate( wfTimestampNow(), true );
 734                 $tl =  $this->makeOptionsLink( $now, array( 'from' => wfTimestampNow() ), $nondefaults );
 735
 736                 $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter' ),
 737                         $cl, $dl, $hl );
 738                 $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter' ), $tl );
 739                 return "{$note}$rclinks<br />$rclistfrom";
 740         }
 741 }