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         protected $customFilters;
  32
  33         public function __construct( $name = 'Recentchanges' ) {
  34                 parent::__construct( $name );
  35         }
  36
  37         /**
  38          * Get a FormOptions object containing the default options
  39          *
  40          * @return FormOptions
  41          */
  42         public function getDefaultOptions() {
  43                 $opts = new FormOptions();
  44
  45                 $opts->add( 'days',  (int)$this->getUser()->getOption( 'rcdays' ) );
  46                 $opts->add( 'limit', (int)$this->getUser()->getOption( 'rclimit' ) );
  47                 $opts->add( 'from', '' );
  48
  49                 $opts->add( 'hideminor',     $this->getUser()->getBoolOption( 'hideminor' ) );
  50                 $opts->add( 'hidebots',      true  );
  51                 $opts->add( 'hideanons',     false );
  52                 $opts->add( 'hideliu',       false );
  53                 $opts->add( 'hidepatrolled', $this->getUser()->getBoolOption( 'hidepatrolled' ) );
  54                 $opts->add( 'hidemyself',    false );
  55
  56                 $opts->add( 'namespace', '', FormOptions::INTNULL );
  57                 $opts->add( 'invert', false );
  58                 $opts->add( 'associated', false );
  59
  60                 $opts->add( 'categories', '' );
  61                 $opts->add( 'categories_any', false );
  62                 $opts->add( 'tagfilter', '' );
  63                 return $opts;
  64         }
  65
  66         /**
  67          * Create a FormOptions object with options as specified by the user
  68          *
  69          * @param $parameters array
  70          *
  71          * @return FormOptions
  72          */
  73         public function setup( $parameters ) {
  74                 global $wgRequest;
  75
  76                 $opts = $this->getDefaultOptions();
  77
  78                 $this->customFilters = array();
  79                 wfRunHooks( 'SpecialRecentChangesFilters', array( $this, &$this->customFilters ) );
  80                 foreach( $this->customFilters as $key => $params ) {
  81                         $opts->add( $key, $params['default'] );
  82                 }
  83
  84                 $opts->fetchValuesFromRequest( $wgRequest );
  85
  86                 // Give precedence to subpage syntax
  87                 if( $parameters !== null ) {
  88                         $this->parseParameters( $parameters, $opts );
  89                 }
  90
  91                 $opts->validateIntBounds( 'limit', 0, 5000 );
  92                 return $opts;
  93         }
  94
  95         /**
  96          * Create a FormOptions object specific for feed requests and return it
  97          *
  98          * @return FormOptions
  99          */
 100         public function feedSetup() {
 101                 global $wgFeedLimit, $wgRequest;
 102                 $opts = $this->getDefaultOptions();
 103                 # Feed is cached on limit,hideminor,namespace; other params would randomly not work
 104                 $opts->fetchValuesFromRequest( $wgRequest, array( 'limit', 'hideminor', 'namespace' ) );
 105                 $opts->validateIntBounds( 'limit', 0, $wgFeedLimit );
 106                 return $opts;
 107         }
 108
 109         /**
 110          * Get the current FormOptions for this request
 111          */
 112         public function getOptions() {
 113                 if ( $this->rcOptions === null ) {
 114                         if ( $this->including() ) {
 115                                 $isFeed = false;
 116                         } else {
 117                                 global $wgRequest;
 118                                 $isFeed = (bool)$wgRequest->getVal( 'feed' );
 119                         }
 120                         $this->rcOptions = $isFeed ? $this->feedSetup() : $this->setup( $this->rcSubpage );
 121                 }
 122                 return $this->rcOptions;
 123         }
 124
 125
 126         /**
 127          * Main execution point
 128          *
 129          * @param $subpage String
 130          */
 131         public function execute( $subpage ) {
 132                 global $wgRequest, $wgOut;
 133                 $this->rcSubpage = $subpage;
 134                 $feedFormat = $this->including() ? null : $wgRequest->getVal( 'feed' );
 135
 136                 # 10 seconds server-side caching max
 137                 $wgOut->setSquidMaxage( 10 );
 138                 # Check if the client has a cached version
 139                 $lastmod = $this->checkLastModified( $feedFormat );
 140                 if( $lastmod === false ) {
 141                         return;
 142                 }
 143
 144                 $opts = $this->getOptions();
 145                 $this->setHeaders();
 146                 $this->outputHeader();
 147                 $this->addRecentChangesJS();
 148
 149                 // Fetch results, prepare a batch link existence check query
 150                 $conds = $this->buildMainQueryConds( $opts );
 151                 $rows = $this->doMainQuery( $conds, $opts );
 152                 if( $rows === false ){
 153                         if( !$this->including() ) {
 154                                 $this->doHeader( $opts );
 155                         }
 156                         return;
 157                 }
 158
 159                 if( !$feedFormat ) {
 160                         $batch = new LinkBatch;
 161                         foreach( $rows as $row ) {
 162                                 $batch->add( NS_USER, $row->rc_user_text );
 163                                 $batch->add( NS_USER_TALK, $row->rc_user_text );
 164                                 $batch->add( $row->rc_namespace, $row->rc_title );
 165                         }
 166                         $batch->execute();
 167                 }
 168                 if( $feedFormat ) {
 169                         list( $changesFeed, $formatter ) = $this->getFeedObject( $feedFormat );
 170                         $changesFeed->execute( $formatter, $rows, $lastmod, $opts );
 171                 } else {
 172                         $this->webOutput( $rows, $opts );
 173                 }
 174
 175                 $rows->free();
 176         }
 177
 178         /**
 179          * Return an array with a ChangesFeed object and ChannelFeed object
 180          *
 181          * @return Array
 182          */
 183         public function getFeedObject( $feedFormat ){
 184                 $changesFeed = new ChangesFeed( $feedFormat, 'rcfeed' );
 185                 $formatter = $changesFeed->getFeedObject(
 186                         wfMsgForContent( 'recentchanges' ),
 187                         wfMsgForContent( 'recentchanges-feed-description' ),
 188                         $this->getTitle()->getFullURL()
 189                 );
 190                 return array( $changesFeed, $formatter );
 191         }
 192
 193         /**
 194          * Process $par and put options found if $opts
 195          * Mainly used when including the page
 196          *
 197          * @param $par String
 198          * @param $opts FormOptions
 199          */
 200         public function parseParameters( $par, FormOptions $opts ) {
 201                 $bits = preg_split( '/\s*,\s*/', trim( $par ) );
 202                 foreach( $bits as $bit ) {
 203                         if( 'hidebots' === $bit ) {
 204                                 $opts['hidebots'] = true;
 205                         }
 206                         if( 'bots' === $bit ) {
 207                                 $opts['hidebots'] = false;
 208                         }
 209                         if( 'hideminor' === $bit ) {
 210                                 $opts['hideminor'] = true;
 211                         }
 212                         if( 'minor' === $bit ) {
 213                                 $opts['hideminor'] = false;
 214                         }
 215                         if( 'hideliu' === $bit ) {
 216                                 $opts['hideliu'] = true;
 217                         }
 218                         if( 'hidepatrolled' === $bit ) {
 219                                 $opts['hidepatrolled'] = true;
 220                         }
 221                         if( 'hideanons' === $bit ) {
 222                                 $opts['hideanons'] = true;
 223                         }
 224                         if( 'hidemyself' === $bit ) {
 225                                 $opts['hidemyself'] = true;
 226                         }
 227
 228                         if( is_numeric( $bit ) ) {
 229                                 $opts['limit'] =  $bit;
 230                         }
 231
 232                         $m = array();
 233                         if( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
 234                                 $opts['limit'] = $m[1];
 235                         }
 236                         if( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
 237                                 $opts['days'] = $m[1];
 238                         }
 239                 }
 240         }
 241
 242         /**
 243          * Get last modified date, for client caching
 244          * Don't use this if we are using the patrol feature, patrol changes don't
 245          * update the timestamp
 246          *
 247          * @param $feedFormat String
 248          * @return String or false
 249          */
 250         public function checkLastModified( $feedFormat ) {
 251                 $dbr = wfGetDB( DB_SLAVE );
 252                 $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __METHOD__ );
 253                 if( $feedFormat || !$this->getUser()->useRCPatrol() ) {
 254                         if( $lastmod && $this->getOutput()->checkLastModified( $lastmod ) ) {
 255                                 # Client cache fresh and headers sent, nothing more to do.
 256                                 return false;
 257                         }
 258                 }
 259                 return $lastmod;
 260         }
 261
 262         /**
 263          * Return an array of conditions depending of options set in $opts
 264          *
 265          * @param $opts FormOptions
 266          * @return array
 267          */
 268         public function buildMainQueryConds( FormOptions $opts ) {
 269                 $dbr = wfGetDB( DB_SLAVE );
 270                 $conds = array();
 271
 272                 # It makes no sense to hide both anons and logged-in users
 273                 # Where this occurs, force anons to be shown
 274                 $forcebot = false;
 275                 if( $opts['hideanons'] && $opts['hideliu'] ){
 276                         # Check if the user wants to show bots only
 277                         if( $opts['hidebots'] ){
 278                                 $opts['hideanons'] = false;
 279                         } else {
 280                                 $forcebot = true;
 281                                 $opts['hidebots'] = false;
 282                         }
 283                 }
 284
 285                 // Calculate cutoff
 286                 $cutoff_unixtime = time() - ( $opts['days'] * 86400 );
 287                 $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 288                 $cutoff = $dbr->timestamp( $cutoff_unixtime );
 289
 290                 $fromValid = preg_match('/^[0-9]{14}$/', $opts['from']);
 291                 if( $fromValid && $opts['from'] > wfTimestamp(TS_MW,$cutoff) ) {
 292                         $cutoff = $dbr->timestamp($opts['from']);
 293                 } else {
 294                         $opts->reset( 'from' );
 295                 }
 296
 297                 $conds[] = 'rc_timestamp >= ' . $dbr->addQuotes( $cutoff );
 298
 299                 $hidePatrol = $this->getUser()->useRCPatrol() && $opts['hidepatrolled'];
 300                 $hideLoggedInUsers = $opts['hideliu'] && !$forcebot;
 301                 $hideAnonymousUsers = $opts['hideanons'] && !$forcebot;
 302
 303                 if( $opts['hideminor'] ) {
 304                         $conds['rc_minor'] = 0;
 305                 }
 306                 if( $opts['hidebots'] ) {
 307                         $conds['rc_bot'] = 0;
 308                 }
 309                 if( $hidePatrol ) {
 310                         $conds['rc_patrolled'] = 0;
 311                 }
 312                 if( $forcebot ) {
 313                         $conds['rc_bot'] = 1;
 314                 }
 315                 if( $hideLoggedInUsers ) {
 316                         $conds[] = 'rc_user = 0';
 317                 }
 318                 if( $hideAnonymousUsers ) {
 319                         $conds[] = 'rc_user != 0';
 320                 }
 321
 322                 if( $opts['hidemyself'] ) {
 323                         if( $this->getUser()->getId() ) {
 324                                 $conds[] = 'rc_user != ' . $dbr->addQuotes( $this->getUser()->getId() );
 325                         } else {
 326                                 $conds[] = 'rc_user_text != ' . $dbr->addQuotes( $this->getUser()->getName() );
 327                         }
 328                 }
 329
 330                 # Namespace filtering
 331                 if( $opts['namespace'] !== '' ) {
 332                         $namespaces[] = $opts['namespace'];
 333
 334                         $inversionSuffix = $opts['invert'] ? '!' : '';
 335
 336                         if( $opts['associated'] ) {
 337                                 # namespace association (bug 2429)
 338                                 $namespaces[] = MWNamespace::getAssociated( $opts['namespace'] );
 339                         }
 340
 341                         $condition = $dbr->makeList(
 342                                 array( 'rc_namespace' . $inversionSuffix
 343                                         => $namespaces ),
 344                                 LIST_AND
 345                         );
 346
 347                         $conds[] = $condition;
 348                 }
 349
 350                 return $conds;
 351         }
 352
 353         /**
 354          * Process the query
 355          *
 356          * @param $conds Array
 357          * @param $opts FormOptions
 358          * @return database result or false (for Recentchangeslinked only)
 359          */
 360         public function doMainQuery( $conds, $opts ) {
 361                 $tables = array( 'recentchanges' );
 362                 $join_conds = array();
 363                 $query_options = array(
 364                         'USE INDEX' => array( 'recentchanges' => 'rc_timestamp' )
 365                 );
 366
 367                 $uid = $this->getUser()->getId();
 368                 $dbr = wfGetDB( DB_SLAVE );
 369                 $limit = $opts['limit'];
 370                 $namespace = $opts['namespace'];
 371                 $invert = $opts['invert'];
 372                 $associated = $opts['associated'];
 373
 374                 $fields = array( $dbr->tableName( 'recentchanges' ) . '.*' ); // all rc columns
 375                 // JOIN on watchlist for users
 376                 if ( $uid ) {
 377                         $tables[] = 'watchlist';
 378                         $fields[] = 'wl_user';
 379                         $fields[] = 'wl_notificationtimestamp';
 380                         $join_conds['watchlist'] = array('LEFT JOIN',
 381                                 "wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace");
 382                 }
 383                 if ( $this->getUser()->isAllowed( 'rollback' ) ) {
 384                         $tables[] = 'page';
 385                         $fields[] = 'page_latest';
 386                         $join_conds['page'] = array('LEFT JOIN', 'rc_cur_id=page_id');
 387                 }
 388                 if ( !$this->including() ) {
 389                         // Tag stuff.
 390                         // Doesn't work when transcluding. See bug 23293
 391                         ChangeTags::modifyDisplayQuery(
 392                                 $tables, $fields, $conds, $join_conds, $query_options,
 393                                 $opts['tagfilter']
 394                         );
 395                 }
 396
 397                 if ( !wfRunHooks( 'SpecialRecentChangesQuery',
 398                         array( &$conds, &$tables, &$join_conds, $opts, &$query_options, &$fields ) ) )
 399                 {
 400                         return false;
 401                 }
 402
 403                 // Don't use the new_namespace_time timestamp index if:
 404                 // (a) "All namespaces" selected
 405                 // (b) We want pages in more than one namespace (inverted/associated)
 406                 // (c) There is a tag to filter on (use tag index instead)
 407                 // (d) UNION + sort/limit is not an option for the DBMS
 408                 if( $namespace === ''
 409                         || ( $invert || $associated )
 410                         || $opts['tagfilter'] != ''
 411                         || !$dbr->unionSupportsOrderAndLimit() )
 412                 {
 413                         $res = $dbr->select( $tables, $fields, $conds, __METHOD__,
 414                                 array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit ) +
 415                                 $query_options,
 416                                 $join_conds );
 417                 // We have a new_namespace_time index! UNION over new=(0,1) and sort result set!
 418                 } else {
 419                         // New pages
 420                         $sqlNew = $dbr->selectSQLText(
 421                                 $tables,
 422                                 $fields,
 423                                 array( 'rc_new' => 1 ) + $conds,
 424                                 __METHOD__,
 425                                 array(
 426                                         'ORDER BY' => 'rc_timestamp DESC',
 427                                         'LIMIT' => $limit,
 428                                         'USE INDEX' => array( 'recentchanges' => 'new_name_timestamp' )
 429                                 ),
 430                                 $join_conds
 431                         );
 432                         // Old pages
 433                         $sqlOld = $dbr->selectSQLText(
 434                                 $tables,
 435                                 $fields,
 436                                 array( 'rc_new' => 0 ) + $conds,
 437                                 __METHOD__,
 438                                 array(
 439                                         'ORDER BY' => 'rc_timestamp DESC',
 440                                         'LIMIT' => $limit,
 441                                         'USE INDEX' => array( 'recentchanges' => 'new_name_timestamp' )
 442                                 ),
 443                                 $join_conds
 444                         );
 445                         # Join the two fast queries, and sort the result set
 446                         $sql = $dbr->unionQueries( array( $sqlNew, $sqlOld ), false ) .
 447                                 ' ORDER BY rc_timestamp DESC';
 448                         $sql = $dbr->limitResult( $sql, $limit, false );
 449                         $res = $dbr->query( $sql, __METHOD__ );
 450                 }
 451
 452                 return $res;
 453         }
 454
 455         /**
 456          * Send output to $wgOut, only called if not used feeds
 457          *
 458          * @param $rows Array of database rows
 459          * @param $opts FormOptions
 460          */
 461         public function webOutput( $rows, $opts ) {
 462                 global $wgOut, $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
 463                 global $wgAllowCategorizedRecentChanges;
 464
 465                 $limit = $opts['limit'];
 466
 467                 if( !$this->including() ) {
 468                         // Output options box
 469                         $this->doHeader( $opts );
 470                 }
 471
 472                 // And now for the content
 473                 $wgOut->setFeedAppendQuery( $this->getFeedQuery() );
 474
 475                 if( $wgAllowCategorizedRecentChanges ) {
 476                         $this->filterByCategories( $rows, $opts );
 477                 }
 478
 479                 $showWatcherCount = $wgRCShowWatchingUsers && $this->getUser()->getOption( 'shownumberswatching' );
 480                 $watcherCache = array();
 481
 482                 $dbr = wfGetDB( DB_SLAVE );
 483
 484                 $counter = 1;
 485                 $list = ChangesList::newFromUser( $this->getUser() );
 486
 487                 $s = $list->beginRecentChangesList();
 488                 foreach( $rows as $obj ) {
 489                         if( $limit == 0 ) {
 490                                 break;
 491                         }
 492                         $rc = RecentChange::newFromRow( $obj );
 493                         $rc->counter = $counter++;
 494                         # Check if the page has been updated since the last visit
 495                         if( $wgShowUpdatedMarker && !empty( $obj->wl_notificationtimestamp ) ) {
 496                                 $rc->notificationtimestamp = ( $obj->rc_timestamp >= $obj->wl_notificationtimestamp );
 497                         } else {
 498                                 $rc->notificationtimestamp = false; // Default
 499                         }
 500                         # Check the number of users watching the page
 501                         $rc->numberofWatchingusers = 0; // Default
 502                         if( $showWatcherCount && $obj->rc_namespace >= 0 ) {
 503                                 if( !isset( $watcherCache[$obj->rc_namespace][$obj->rc_title] ) ) {
 504                                         $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 505                                                 $dbr->selectField(
 506                                                         'watchlist',
 507                                                         'COUNT(*)',
 508                                                         array(
 509                                                                 'wl_namespace' => $obj->rc_namespace,
 510                                                                 'wl_title' => $obj->rc_title,
 511                                                         ),
 512                                                         __METHOD__ . '-watchers'
 513                                                 );
 514                                 }
 515                                 $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 516                         }
 517                         $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ), $counter );
 518                         --$limit;
 519                 }
 520                 $s .= $list->endRecentChangesList();
 521                 $wgOut->addHTML( $s );
 522         }
 523
 524         /**
 525          * Get the query string to append to feed link URLs.
 526          * This is overridden by RCL to add the target parameter
 527          */
 528         public function getFeedQuery() {
 529                 return false;
 530         }
 531
 532         /**
 533          * Return the text to be displayed above the changes
 534          *
 535          * @param $opts FormOptions
 536          * @return String: XHTML
 537          */
 538         public function doHeader( $opts ) {
 539                 global $wgScript, $wgOut;
 540
 541                 $this->setTopText( $wgOut, $opts );
 542
 543                 $defaults = $opts->getAllValues();
 544                 $nondefaults = $opts->getChangedValues();
 545                 $opts->consumeValues( array(
 546                         'namespace', 'invert', 'associated', 'tagfilter',
 547                         'categories', 'categories_any'
 548                 ) );
 549
 550                 $panel = array();
 551                 $panel[] = $this->optionsPanel( $defaults, $nondefaults );
 552                 $panel[] = '<hr />';
 553
 554                 $extraOpts = $this->getExtraOptions( $opts );
 555                 $extraOptsCount = count( $extraOpts );
 556                 $count = 0;
 557                 $submit = ' ' . Xml::submitbutton( wfMsg( 'allpagessubmit' ) );
 558
 559                 $out = Xml::openElement( 'table', array( 'class' => 'mw-recentchanges-table' ) );
 560                 foreach( $extraOpts as $optionRow ) {
 561                         # Add submit button to the last row only
 562                         ++$count;
 563                         $addSubmit = $count === $extraOptsCount ? $submit : '';
 564
 565                         $out .= Xml::openElement( 'tr' );
 566                         if( is_array( $optionRow ) ) {
 567                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-label' ), $optionRow[0] );
 568                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-input' ), $optionRow[1] . $addSubmit );
 569                         } else {
 570                                 $out .= Xml::tags( 'td', array( 'class' => 'mw-input', 'colspan' => 2 ), $optionRow . $addSubmit );
 571                         }
 572                         $out .= Xml::closeElement( 'tr' );
 573                 }
 574                 $out .= Xml::closeElement( 'table' );
 575
 576                 $unconsumed = $opts->getUnconsumedValues();
 577                 foreach( $unconsumed as $key => $value ) {
 578                         $out .= Html::hidden( $key, $value );
 579                 }
 580
 581                 $t = $this->getTitle();
 582                 $out .= Html::hidden( 'title', $t->getPrefixedText() );
 583                 $form = Xml::tags( 'form', array( 'action' => $wgScript ), $out );
 584                 $panel[] = $form;
 585                 $panelString = implode( "\n", $panel );
 586
 587                 $wgOut->addHTML(
 588                         Xml::fieldset( wfMsg( 'recentchanges-legend' ), $panelString, array( 'class' => 'rcoptions' ) )
 589                 );
 590
 591                 $this->setBottomText( $wgOut, $opts );
 592         }
 593
 594         /**
 595          * Get options to be displayed in a form
 596          *
 597          * @param $opts FormOptions
 598          * @return Array
 599          */
 600         function getExtraOptions( $opts ) {
 601                 $extraOpts = array();
 602                 $extraOpts['namespace'] = $this->namespaceFilterForm( $opts );
 603
 604                 global $wgAllowCategorizedRecentChanges;
 605                 if( $wgAllowCategorizedRecentChanges ) {
 606                         $extraOpts['category'] = $this->categoryFilterForm( $opts );
 607                 }
 608
 609                 $tagFilter = ChangeTags::buildTagFilterSelector( $opts['tagfilter'] );
 610                 if ( count( $tagFilter ) ) {
 611                         $extraOpts['tagfilter'] = $tagFilter;
 612                 }
 613
 614                 wfRunHooks( 'SpecialRecentChangesPanel', array( &$extraOpts, $opts ) );
 615                 return $extraOpts;
 616         }
 617
 618         /**
 619          * Send the text to be displayed above the options
 620          *
 621          * @param $out OutputPage
 622          * @param $opts FormOptions
 623          */
 624         function setTopText( OutputPage $out, FormOptions $opts ) {
 625                 $out->addWikiText( wfMsgForContentNoTrans( 'recentchangestext' ) );
 626         }
 627
 628         /**
 629          * Send the text to be displayed after the options, for use in
 630          * Recentchangeslinked
 631          *
 632          * @param $out OutputPage
 633          * @param $opts FormOptions
 634          */
 635         function setBottomText( OutputPage $out, FormOptions $opts ) {}
 636
 637         /**
 638          * Creates the choose namespace selection
 639          *
 640          * @todo Uses radio buttons (HASHAR)
 641          * @param $opts FormOptions
 642          * @return String
 643          */
 644         protected function namespaceFilterForm( FormOptions $opts ) {
 645                 $nsSelect = Xml::namespaceSelector( $opts['namespace'], '' );
 646                 $nsLabel = Xml::label( wfMsg( 'namespace' ), 'namespace' );
 647                 $invert = Xml::checkLabel(
 648                         wfMsg( 'invert' ), 'invert', 'nsinvert',
 649                         $opts['invert'],
 650                         array( 'title' => wfMsg( 'tooltip-invert' ) )
 651                 );
 652                 $associated = Xml::checkLabel(
 653                         wfMsg( 'namespace_association' ), 'associated', 'nsassociated',
 654                         $opts['associated'],
 655                         array( 'title' => wfMsg( 'tooltip-namespace_association' ) )
 656                 );
 657                 return array( $nsLabel, "$nsSelect $invert $associated" );
 658         }
 659
 660         /**
 661          * Create a input to filter changes by categories
 662          *
 663          * @param $opts FormOptions
 664          * @return Array
 665          */
 666         protected function categoryFilterForm( FormOptions $opts ) {
 667                 list( $label, $input ) = Xml::inputLabelSep( wfMsg( 'rc_categories' ),
 668                         'categories', 'mw-categories', false, $opts['categories'] );
 669
 670                 $input .= ' ' . Xml::checkLabel( wfMsg( 'rc_categories_any' ),
 671                         'categories_any', 'mw-categories_any', $opts['categories_any'] );
 672
 673                 return array( $label, $input );
 674         }
 675
 676         /**
 677          * Filter $rows by categories set in $opts
 678          *
 679          * @param $rows Array of database rows
 680          * @param $opts FormOptions
 681          */
 682         function filterByCategories( &$rows, FormOptions $opts ) {
 683                 $categories = array_map( 'trim', explode( '|' , $opts['categories'] ) );
 684
 685                 if( !count( $categories ) ) {
 686                         return;
 687                 }
 688
 689                 # Filter categories
 690                 $cats = array();
 691                 foreach( $categories as $cat ) {
 692                         $cat = trim( $cat );
 693                         if( $cat == '' ) {
 694                                 continue;
 695                         }
 696                         $cats[] = $cat;
 697                 }
 698
 699                 # Filter articles
 700                 $articles = array();
 701                 $a2r = array();
 702                 $rowsarr = array();
 703                 foreach( $rows as $k => $r ) {
 704                         $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 705                         $id = $nt->getArticleID();
 706                         if( $id == 0 ) {
 707                                 continue; # Page might have been deleted...
 708                         }
 709                         if( !in_array( $id, $articles ) ) {
 710                                 $articles[] = $id;
 711                         }
 712                         if( !isset( $a2r[$id] ) ) {
 713                                 $a2r[$id] = array();
 714                         }
 715                         $a2r[$id][] = $k;
 716                         $rowsarr[$k] = $r;
 717                 }
 718
 719                 # Shortcut?
 720                 if( !count( $articles ) || !count( $cats ) ) {
 721                         return;
 722                 }
 723
 724                 # Look up
 725                 $c = new Categoryfinder;
 726                 $c->seed( $articles, $cats, $opts['categories_any'] ? 'OR' : 'AND' );
 727                 $match = $c->run();
 728
 729                 # Filter
 730                 $newrows = array();
 731                 foreach( $match as $id ) {
 732                         foreach( $a2r[$id] as $rev ) {
 733                                 $k = $rev;
 734                                 $newrows[$k] = $rowsarr[$k];
 735                         }
 736                 }
 737                 $rows = $newrows;
 738         }
 739
 740         /**
 741          * Makes change an option link which carries all the other options
 742          *
 743          * @param $title Title
 744          * @param $override Array: options to override
 745          * @param $options Array: current options
 746          * @param $active Boolean: whether to show the link in bold
 747          */
 748         function makeOptionsLink( $title, $override, $options, $active = false ) {
 749                 $params = $override + $options;
 750                 if ( $active ) {
 751                         return $this->getSkin()->link(
 752                                 $this->getTitle(),
 753                                 '<strong>' . htmlspecialchars( $title ) . '</strong>',
 754                                 array(), $params, array( 'known' ) );
 755                 } else {
 756                         return $this->getSkin()->link(
 757                                 $this->getTitle(), htmlspecialchars( $title ), array(),
 758                                 $params, array( 'known' ) );
 759                 }
 760         }
 761
 762         /**
 763          * Creates the options panel.
 764          *
 765          * @param $defaults Array
 766          * @param $nondefaults Array
 767          */
 768         function optionsPanel( $defaults, $nondefaults ) {
 769                 global $wgLang, $wgRCLinkLimits, $wgRCLinkDays;
 770
 771                 $options = $nondefaults + $defaults;
 772
 773                 $note = '';
 774                 if( !wfEmptyMsg( 'rclegend' ) ) {
 775                         $note .= '<div class="mw-rclegend">' .
 776                                 wfMsgExt( 'rclegend', array( 'parseinline' ) ) . "</div>\n";
 777                 }
 778                 if( $options['from'] ) {
 779                         $note .= wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 780                                 $wgLang->formatNum( $options['limit'] ),
 781                                 $wgLang->timeanddate( $options['from'], true ),
 782                                 $wgLang->date( $options['from'], true ),
 783                                 $wgLang->time( $options['from'], true ) ) . '<br />';
 784                 }
 785
 786                 # Sort data for display and make sure it's unique after we've added user data.
 787                 $wgRCLinkLimits[] = $options['limit'];
 788                 $wgRCLinkDays[] = $options['days'];
 789                 sort( $wgRCLinkLimits );
 790                 sort( $wgRCLinkDays );
 791                 $wgRCLinkLimits = array_unique( $wgRCLinkLimits );
 792                 $wgRCLinkDays = array_unique( $wgRCLinkDays );
 793
 794                 // limit links
 795                 foreach( $wgRCLinkLimits as $value ) {
 796                         $cl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
 797                                 array( 'limit' => $value ), $nondefaults, $value == $options['limit'] );
 798                 }
 799                 $cl = $wgLang->pipeList( $cl );
 800
 801                 // day links, reset 'from' to none
 802                 foreach( $wgRCLinkDays as $value ) {
 803                         $dl[] = $this->makeOptionsLink( $wgLang->formatNum( $value ),
 804                                 array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] );
 805                 }
 806                 $dl = $wgLang->pipeList( $dl );
 807
 808
 809                 // show/hide links
 810                 $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ) );
 811                 $filters = array(
 812                         'hideminor'     => 'rcshowhideminor',
 813                         'hidebots'      => 'rcshowhidebots',
 814                         'hideanons'     => 'rcshowhideanons',
 815                         'hideliu'               => 'rcshowhideliu',
 816                         'hidepatrolled' => 'rcshowhidepatr',
 817                         'hidemyself'    => 'rcshowhidemine'
 818                 );
 819                 foreach ( $this->customFilters as $key => $params ) {
 820                         $filters[$key] = $params['msg'];
 821                 }
 822                 // Disable some if needed
 823                 if ( !$this->getUser()->useRCPatrol() ) {
 824                         unset( $filters['hidepatrolled'] );
 825                 }
 826
 827                 $links = array();
 828                 foreach ( $filters as $key => $msg ) {
 829                         $link = $this->makeOptionsLink( $showhide[1 - $options[$key]],
 830                                 array( $key => 1-$options[$key] ), $nondefaults );
 831                         $links[] = wfMsgHtml( $msg, $link );
 832                 }
 833
 834                 // show from this onward link
 835                 $timestamp = wfTimestampNow();
 836                 $now = $wgLang->timeanddate( $timestamp, true );
 837                 $tl = $this->makeOptionsLink(
 838                         $now, array( 'from' => $timestamp ), $nondefaults
 839                 );
 840
 841                 $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter' ),
 842                         $cl, $dl, $wgLang->pipeList( $links ) );
 843                 $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter' ), $tl );
 844                 return "{$note}$rclinks<br />$rclistfrom";
 845         }
 846
 847         /**
 848          * add javascript specific to the [[Special:RecentChanges]] page
 849          */
 850         function addRecentChangesJS() {
 851                 global $wgOut;
 852                 $wgOut->addModules( array(
 853                         'mediawiki.special.recentchanges',
 854                 ) );
 855         }
 856 }