includes/SpecialWatchlist.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'SpecialRecentchanges.php' );
  12
  13 /**
  14  * Constructor
  15  * @todo Document $par parameter.
  16  * @param $par String: FIXME
  17  */
  18 function wfSpecialWatchlist( $par ) {
  19         global $wgUser, $wgOut, $wgLang, $wgMemc, $wgRequest, $wgContLang;
  20         global $wgUseWatchlistCache, $wgWLCacheTimeout;
  21         global $wgRCShowWatchingUsers, $wgEnotifWatchlist, $wgShowUpdatedMarker;
  22         global $wgEnotifWatchlist;
  23         $fname = 'wfSpecialWatchlist';
  24
  25         $skin =& $wgUser->getSkin();
  26         $specialTitle = SpecialPage::getTitleFor( 'Watchlist' );
  27         $wgOut->setRobotPolicy( 'noindex,nofollow' );
  28
  29         # Anons don't get a watchlist
  30         if( $wgUser->isAnon() ) {
  31                 $wgOut->setPageTitle( wfMsg( 'watchnologin' ) );
  32                 $llink = $skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Userlogin' ), wfMsgHtml( 'loginreqlink' ), 'returnto=' . $specialTitle->getPrefixedUrl() );
  33                 $wgOut->addHtml( wfMsgWikiHtml( 'watchlistanontext', $llink ) );
  34                 return;
  35         } else {
  36                 $wgOut->setPageTitle( wfMsg( 'watchlist' ) );
  37                 $wgOut->setSubtitle( wfMsgWikiHtml( 'watchlistfor', htmlspecialchars( $wgUser->getName() ) ) );
  38         }
  39
  40         if( wlHandleClear( $wgOut, $wgRequest, $par ) ) {
  41                 return;
  42         }
  43
  44         $defaults = array(
  45         /* float */ 'days' => floatval( $wgUser->getOption( 'watchlistdays' ) ), /* 3.0 or 0.5, watch further below */
  46         /* bool  */ 'hideOwn' => (int)$wgUser->getBoolOption( 'watchlisthideown' ),
  47         /* bool  */ 'hideBots' => (int)$wgUser->getBoolOption( 'watchlisthidebots' ),
  48         /* ?     */ 'namespace' => 'all',
  49         );
  50
  51         extract($defaults);
  52
  53         # Extract variables from the request, falling back to user preferences or
  54         # other default values if these don't exist
  55         $prefs['days'    ] = floatval( $wgUser->getOption( 'watchlistdays' ) );
  56         $prefs['hideown' ] = $wgUser->getBoolOption( 'watchlisthideown' );
  57         $prefs['hidebots'] = $wgUser->getBoolOption( 'watchlisthidebots' );
  58
  59         # Get query variables
  60         $days = $wgRequest->getVal( 'days', $prefs['days'] );
  61         $hideOwn = $wgRequest->getBool( 'hideOwn', $prefs['hideown'] );
  62         $hideBots = $wgRequest->getBool( 'hideBots', $prefs['hidebots'] );
  63
  64         # Get namespace value, if supplied, and prepare a WHERE fragment
  65         $nameSpace = $wgRequest->getIntOrNull( 'namespace' );
  66         if( !is_null( $nameSpace ) ) {
  67                 $nameSpace = intval( $nameSpace );
  68                 $nameSpaceClause = " AND rc_namespace = $nameSpace";
  69         } else {
  70                 $nameSpace = '';
  71                 $nameSpaceClause = '';
  72         }
  73
  74         # Watchlist editing
  75         $action = $wgRequest->getVal( 'action' );
  76         $remove = $wgRequest->getVal( 'remove' );
  77         $id = $wgRequest->getArray( 'id' );
  78
  79         $uid = $wgUser->getID();
  80         if( $wgEnotifWatchlist && $wgRequest->getVal( 'reset' ) && $wgRequest->wasPosted() ) {
  81                 $wgUser->clearAllNotifications( $uid );
  82         }
  83
  84   # Deleting items from watchlist
  85         if(($action == 'submit') && isset($remove) && is_array($id)) {
  86                 $wgOut->addWikiText( wfMsg( 'removingchecked' ) );
  87                 $wgOut->addHTML( '<p>' );
  88                 foreach($id as $one) {
  89                         $t = Title::newFromURL( $one );
  90                         if( !is_null( $t ) ) {
  91                                 $wl = WatchedItem::fromUserTitle( $wgUser, $t );
  92                                 if( $wl->removeWatch() === false ) {
  93                                         $wgOut->addHTML( wfMsg( 'couldntremove', htmlspecialchars($one) ) . "<br />\n" );
  94                                 } else {
  95                                         wfRunHooks('UnwatchArticle', array(&$wgUser, new Article($t)));
  96                                         $wgOut->addHTML( '(' . htmlspecialchars($one) . ')<br />' );
  97                                 }
  98                         } else {
  99                                 $wgOut->addHTML( wfMsg( 'iteminvalidname', htmlspecialchars($one) ) . "<br />\n" );
 100                         }
 101                 }
 102                 $wgOut->addHTML( "</p>\n<p>" . wfMsg( 'wldone' ) . "</p>\n" );
 103         }
 104
 105         if ( $wgUseWatchlistCache ) {
 106                 $memckey = wfMemcKey( 'watchlist', 'id', $wgUser->getId() );
 107                 $cache_s = @$wgMemc->get( $memckey );
 108                 if( $cache_s ){
 109                         $wgOut->addWikiText( wfMsg('wlsaved') );
 110                         $wgOut->addHTML( $cache_s );
 111                         return;
 112                 }
 113         }
 114
 115         $dbr =& wfGetDB( DB_SLAVE );
 116         list( $page, $watchlist, $recentchanges ) = $dbr->tableNamesN( 'page', 'watchlist', 'recentchanges' );
 117
 118         $sql = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_user=$uid";
 119         $res = $dbr->query( $sql, $fname );
 120         $s = $dbr->fetchObject( $res );
 121
 122 #       Patch *** A1 *** (see A2 below)
 123 #       adjust for page X, talk:page X, which are both stored separately, but treated together
 124         $nitems = floor($s->n / 2);
 125 #       $nitems = $s->n;
 126
 127         if($nitems == 0) {
 128                 $wgOut->addWikiText( wfMsg( 'nowatchlist' ) );
 129                 return;
 130         }
 131
 132         if( is_null($days) || !is_numeric($days) ) {
 133                 $big = 1000; /* The magical big */
 134                 if($nitems > $big) {
 135                         # Set default cutoff shorter
 136                         $days = $defaults['days'] = (12.0 / 24.0); # 12 hours...
 137                 } else {
 138                         $days = $defaults['days']; # default cutoff for shortlisters
 139                 }
 140         } else {
 141                 $days = floatval($days);
 142         }
 143
 144         // Dump everything here
 145         $nondefaults = array();
 146
 147         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 148         wfAppendToArrayIfNotDefault( 'hideOwn', (int)$hideOwn, $defaults, $nondefaults);
 149         wfAppendToArrayIfNotDefault( 'hideBots', (int)$hideBots, $defaults, $nondefaults);
 150         wfAppendToArrayIfNotDefault( 'namespace', $nameSpace, $defaults, $nondefaults );
 151
 152         if ( $days <= 0 ) {
 153                 $cutoff = false;
 154                 $npages = wfMsg( 'watchlistall1' );
 155         } else {
 156                 $cutoff = $dbr->timestamp( time() - intval( $days * 86400 ) );
 157                 /*
 158                 $sql = "SELECT COUNT(*) AS n FROM $page, $revision  WHERE rev_timestamp>'$cutoff' AND page_id=rev_page";
 159                 $res = $dbr->query( $sql, $fname );
 160                 $s = $dbr->fetchObject( $res );
 161                 $npages = $s->n;
 162                 */
 163                 $npages = 40000 * $days;
 164         }
 165
 166         /* Edit watchlist form */
 167         if($wgRequest->getBool('edit') || $par == 'edit' ) {
 168                 $wgOut->addWikiText( wfMsg( 'watchlistcontains', $wgLang->formatNum( $nitems ) ) .
 169                         "\n\n" . wfMsg( 'watcheditlist' ) );
 170
 171                 $wgOut->addHTML( '<form action=\'' .
 172                         $specialTitle->escapeLocalUrl( 'action=submit' ) .
 173                         "' method='post'>\n" );
 174
 175 #               Patch A2
 176 #               The following was proposed by KTurner 07.11.2004 to T.Gries
 177 #               $sql = "SELECT distinct (wl_namespace & ~1),wl_title FROM $watchlist WHERE wl_user=$uid";
 178                 $sql = "SELECT wl_namespace, wl_title, page_is_redirect FROM $watchlist LEFT JOIN $page ON wl_namespace = page_namespace AND wl_title = page_title WHERE wl_user=$uid";
 179
 180                 $res = $dbr->query( $sql, $fname );
 181
 182                 # Batch existence check
 183                 $linkBatch = new LinkBatch();
 184                 while( $row = $dbr->fetchObject( $res ) )
 185                         $linkBatch->addObj( Title::makeTitleSafe( $row->wl_namespace, $row->wl_title ) );
 186                 $linkBatch->execute();
 187                 if( $dbr->numRows( $res ) > 0 )
 188                         $dbr->dataSeek( $res, 0 ); # Let's do the time warp again!
 189
 190                 $sk = $wgUser->getSkin();
 191
 192                 $list = array();
 193                 while( $s = $dbr->fetchObject( $res ) ) {
 194                         $list[$s->wl_namespace][$s->wl_title] = $s->page_is_redirect;
 195                 }
 196
 197                 // TODO: Display a TOC
 198                 foreach($list as $ns => $titles) {
 199                         if (Namespace::isTalk($ns))
 200                                 continue;
 201                         if ($ns != NS_MAIN)
 202                                 $wgOut->addHTML( '<h2>' . $wgContLang->getFormattedNsText( $ns ) . '</h2>' );
 203                         $wgOut->addHTML( '<ul>' );
 204                         foreach( $titles as $title => $redir ) {
 205                                 $titleObj = Title::makeTitle( $ns, $title );
 206                                 if( is_null( $titleObj ) ) {
 207                                         $wgOut->addHTML(
 208                                                 '<!-- bad title "' .
 209                                                 htmlspecialchars( $s->wl_title ) . '" in namespace ' . $s->wl_namespace . " -->\n"
 210                                         );
 211                                 } else {
 212                                         global $wgContLang;
 213                                         $toolLinks = array();
 214                                         $pageLink = $sk->makeLinkObj( $titleObj );
 215                                         $toolLinks[] = $sk->makeLinkObj( $titleObj->getTalkPage(), $wgLang->getNsText( NS_TALK ) );
 216                                         if( $titleObj->exists() )
 217                                                 $toolLinks[] = $sk->makeKnownLinkObj( $titleObj, wfMsgHtml( 'history_short' ), 'action=history' );
 218                                         $toolLinks = '(' . implode( ' | ', $toolLinks ) . ')';
 219                                         $checkbox = '<input type="checkbox" name="id[]" value="' . htmlspecialchars( $titleObj->getPrefixedText() ) . '" /> ' . ( $wgContLang->isRTL() ? '&rlm;' : '&lrm;' );
 220                                         if( $redir ) {
 221                                                 $spanopen = '<span class="watchlistredir">';
 222                                                 $spanclosed = '</span>';
 223                                         } else {
 224                                                 $spanopen = $spanclosed = '';
 225                                         }
 226
 227                                         $wgOut->addHTML( "<li>{$checkbox}{$spanopen}{$pageLink}{$spanclosed} {$toolLinks}</li>\n" );
 228                                 }
 229                         }
 230                         $wgOut->addHTML( '</ul>' );
 231                 }
 232                 $wgOut->addHTML(
 233                         wfSubmitButton( wfMsg('removechecked'), array('name' => 'remove') ) .
 234                         "\n</form>\n"
 235                 );
 236
 237                 return;
 238         }
 239
 240         # If the watchlist is relatively short, it's simplest to zip
 241         # down its entirety and then sort the results.
 242
 243         # If it's relatively long, it may be worth our while to zip
 244         # through the time-sorted page list checking for watched items.
 245
 246         # Up estimate of watched items by 15% to compensate for talk pages...
 247
 248         # Toggles
 249         $andHideOwn = $hideOwn ? "AND (rc_user <> $uid)" : '';
 250         $andHideBots = $hideBots ? "AND (rc_bot = 0)" : '';
 251
 252         # Show watchlist header
 253         $header = '';
 254         if( $wgUser->getOption( 'enotifwatchlistpages' ) && $wgEnotifWatchlist) {
 255                 $header .= wfMsg( 'wlheader-enotif' ) . "\n";
 256         }
 257         if ( $wgEnotifWatchlist && $wgShowUpdatedMarker ) {
 258                 $header .= wfMsg( 'wlheader-showupdated' ) . "\n";
 259         }
 260
 261   # Toggle watchlist content (all recent edits or just the latest)
 262         if( $wgUser->getOption( 'extendwatchlist' )) {
 263                 $andLatest='';
 264                 $limitWatchlist = 'LIMIT ' . intval( $wgUser->getOption( 'wllimit' ) );
 265         } else {
 266                 $andLatest= 'AND rc_this_oldid=page_latest';
 267                 $limitWatchlist = '';
 268         }
 269
 270         # TODO: Consider removing the third parameter
 271         $header .= wfMsgExt( 'watchdetails', array( 'parsemag' ), $wgLang->formatNum( $nitems ),
 272                 $wgLang->formatNum( $npages ), '',
 273                 $specialTitle->getFullUrl( 'edit=yes' ) );
 274         $wgOut->addWikiText( $header );
 275
 276         if ( $wgEnotifWatchlist && $wgShowUpdatedMarker ) {
 277                 $wgOut->addHTML( '<form action="' .
 278                         $specialTitle->escapeLocalUrl() .
 279                         '" method="post"><input type="submit" name="dummy" value="' .
 280                         htmlspecialchars( wfMsg( 'enotif_reset' ) ) .
 281                         '" /><input type="hidden" name="reset" value="all" /></form>' .
 282                         "\n\n" );
 283         }
 284
 285         $sql = "SELECT
 286           rc_namespace AS page_namespace, rc_title AS page_title,
 287           rc_comment AS rev_comment, rc_cur_id AS page_id,
 288           rc_user AS rev_user, rc_user_text AS rev_user_text,
 289           rc_timestamp AS rev_timestamp, rc_minor AS rev_minor_edit,
 290           rc_this_oldid AS rev_id,
 291           rc_last_oldid, rc_id, rc_patrolled,
 292           rc_new AS page_is_new,wl_notificationtimestamp
 293           FROM $watchlist,$recentchanges,$page
 294           WHERE wl_user=$uid
 295           AND wl_namespace=rc_namespace
 296           AND wl_title=rc_title
 297           AND rc_timestamp > '$cutoff'
 298           AND rc_cur_id=page_id
 299           $andLatest
 300           $andHideOwn
 301           $andHideBots
 302           $nameSpaceClause
 303           ORDER BY rc_timestamp DESC
 304           $limitWatchlist";
 305
 306         $res = $dbr->query( $sql, $fname );
 307         $numRows = $dbr->numRows( $res );
 308
 309         /* Start bottom header */
 310         $wgOut->addHTML( "<hr />\n" );
 311
 312         if($days >= 1) {
 313                 $wgOut->addWikiText( wfMsg( 'rcnote', $wgLang->formatNum( $numRows ),
 314                         $wgLang->formatNum( $days ), $wgLang->timeAndDate( wfTimestampNow(), true ) ) . '<br />' , false );
 315         } elseif($days > 0) {
 316                 $wgOut->addWikiText( wfMsg( 'wlnote', $wgLang->formatNum( $numRows ),
 317                         $wgLang->formatNum( round($days*24) ) ) . '<br />' , false );
 318         }
 319
 320         $wgOut->addHTML( "\n" . wlCutoffLinks( $days, 'Watchlist', $nondefaults ) . "<br />\n" );
 321
 322         # Spit out some control panel links
 323         $thisTitle = SpecialPage::getTitleFor( 'Watchlist' );
 324         $skin = $wgUser->getSkin();
 325
 326         # Problems encountered using the fancier method
 327         $label = $hideBots ? wfMsgHtml( 'show' ) : wfMsgHtml( 'hide' );
 328         $linkBits = wfArrayToCGI( array( 'hideBots' => 1 - (int)$hideBots ), $nondefaults );
 329         $link = $skin->makeKnownLinkObj( $thisTitle, $label, $linkBits );
 330         $links[] = wfMsgHtml( 'wlhideshowbots', $link );
 331
 332         $label = $hideOwn ? wfMsgHtml( 'show' ) : wfMsgHtml( 'hide' );
 333         $linkBits = wfArrayToCGI( array( 'hideOwn' => 1 - (int)$hideOwn ), $nondefaults );
 334         $link = $skin->makeKnownLinkObj( $thisTitle, $label, $linkBits );
 335         $links[] = wfMsgHtml( 'wlhideshowown', $link );
 336
 337         $wgOut->addHTML( implode( ' | ', $links ) );
 338
 339         # Form for namespace filtering
 340         $wgOut->addHTML( "\n" .
 341                 wfOpenElement( 'form', array(
 342                                 'method' => 'post',
 343                                 'action' => $thisTitle->getLocalURL(),
 344                         ) ) .
 345                 wfMsgExt( 'namespace', array( 'parseinline') ) .
 346                 HTMLnamespaceselector( $nameSpace, '' ) . "\n" .
 347                 ( $hideOwn ? wfHidden('hideown', 1)."\n" : '' ) .
 348                 ( $hideBots ? wfHidden('hidebots', 1)."\n" : '' ) .
 349                 wfHidden( 'days', $days ) . "\n" .
 350                 wfSubmitButton( wfMsgExt( 'allpagessubmit', array( 'escape') ) ) . "\n" .
 351                 wfCloseElement( 'form' ) . "\n"
 352         );
 353
 354         if ( $numRows == 0 ) {
 355                 $wgOut->addWikitext( "<br />" . wfMsg( 'watchnochange' ), false );
 356                 return;
 357         }
 358
 359         /* End bottom header */
 360
 361         $list = ChangesList::newFromUser( $wgUser );
 362
 363         $s = $list->beginRecentChangesList();
 364         $counter = 1;
 365         while ( $obj = $dbr->fetchObject( $res ) ) {
 366                 # Make fake RC entry
 367                 $rc = RecentChange::newFromCurRow( $obj, $obj->rc_last_oldid );
 368                 $rc->counter = $counter++;
 369
 370                 if ( $wgShowUpdatedMarker ) {
 371                         $updated = $obj->wl_notificationtimestamp;
 372                 } else {
 373                         // Same visual appearance as MW 1.4
 374                         $updated = true;
 375                 }
 376
 377                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 378                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" .$dbr->strencode($obj->page_title). "' AND wl_namespace='{$obj->page_namespace}'" ;
 379                         $res3 = $dbr->query( $sql3, $fname );
 380                         $x = $dbr->fetchObject( $res3 );
 381                         $rc->numberofWatchingusers = $x->n;
 382                 } else {
 383                         $rc->numberofWatchingusers = 0;
 384                 }
 385
 386                 $s .= $list->recentChangesLine( $rc, $updated );
 387         }
 388         $s .= $list->endRecentChangesList();
 389
 390         $dbr->freeResult( $res );
 391         $wgOut->addHTML( $s );
 392
 393         if ( $wgUseWatchlistCache ) {
 394                 $wgMemc->set( $memckey, $s, $wgWLCacheTimeout);
 395         }
 396
 397 }
 398
 399 function wlHoursLink( $h, $page, $options = array() ) {
 400         global $wgUser, $wgLang, $wgContLang;
 401         $sk = $wgUser->getSkin();
 402         $s = $sk->makeKnownLink(
 403           $wgContLang->specialPage( $page ),
 404           $wgLang->formatNum( $h ),
 405           wfArrayToCGI( array('days' => ($h / 24.0)), $options ) );
 406         return $s;
 407 }
 408
 409 function wlDaysLink( $d, $page, $options = array() ) {
 410         global $wgUser, $wgLang, $wgContLang;
 411         $sk = $wgUser->getSkin();
 412         $s = $sk->makeKnownLink(
 413           $wgContLang->specialPage( $page ),
 414           ($d ? $wgLang->formatNum( $d ) : wfMsgHtml( 'watchlistall2' ) ),
 415           wfArrayToCGI( array('days' => $d), $options ) );
 416         return $s;
 417 }
 418
 419 /**
 420  * Returns html
 421  */
 422 function wlCutoffLinks( $days, $page = 'Watchlist', $options = array() ) {
 423         $hours = array( 1, 2, 6, 12 );
 424         $days = array( 1, 3, 7 );
 425         $i = 0;
 426         foreach( $hours as $h ) {
 427                 $hours[$i++] = wlHoursLink( $h, $page, $options );
 428         }
 429         $i = 0;
 430         foreach( $days as $d ) {
 431                 $days[$i++] = wlDaysLink( $d, $page, $options );
 432         }
 433         return wfMsgExt('wlshowlast',
 434                 array('parseinline', 'replaceafter'),
 435                 implode(' | ', $hours),
 436                 implode(' | ', $days),
 437                 wlDaysLink( 0, $page, $options ) );
 438 }
 439
 440 /**
 441  * Count the number of items on a user's watchlist
 442  *
 443  * @param $talk Include talk pages
 444  * @return integer
 445  */
 446 function wlCountItems( &$user, $talk = true ) {
 447         $dbr =& wfGetDB( DB_SLAVE );
 448
 449         # Fetch the raw count
 450         $res = $dbr->select( 'watchlist', 'COUNT(*) AS count', array( 'wl_user' => $user->mId ), 'wlCountItems' );
 451         $row = $dbr->fetchObject( $res );
 452         $count = $row->count;
 453         $dbr->freeResult( $res );
 454
 455         # Halve to remove talk pages if needed
 456         if( !$talk )
 457                 $count = floor( $count / 2 );
 458
 459         return( $count );
 460 }
 461
 462 /**
 463  * Allow the user to clear their watchlist
 464  *
 465  * @param $out Output object
 466  * @param $request Request object
 467  * @param $par Parameters passed to the watchlist page
 468  * @return bool True if it's been taken care of; false indicates the watchlist
 469  *                              code needs to do something further
 470  */
 471 function wlHandleClear( &$out, &$request, $par ) {
 472         global $wgLang;
 473
 474         # Check this function has something to do
 475         if( $request->getText( 'action' ) == 'clear' || $par == 'clear' ) {
 476                 global $wgUser;
 477                 $out->setPageTitle( wfMsgHtml( 'clearwatchlist' ) );
 478                 $count = wlCountItems( $wgUser );
 479                 if( $count > 0 ) {
 480                         # See if we're clearing or confirming
 481                         if( $request->wasPosted() && $wgUser->matchEditToken( $request->getText( 'token' ), 'clearwatchlist' ) ) {
 482                                 # Clearing, so do it and report the result
 483                                 $dbw =& wfGetDB( DB_MASTER );
 484                                 $dbw->delete( 'watchlist', array( 'wl_user' => $wgUser->mId ), 'wlHandleClear' );
 485                                 $out->addWikiText( wfMsgExt( 'watchlistcleardone', array( 'parsemag', 'escape'), $wgLang->formatNum( $count ) ) );
 486                                 $out->returnToMain();
 487                         } else {
 488                                 # Confirming, so show a form
 489                                 $wlTitle = SpecialPage::getTitleFor( 'Watchlist' );
 490                                 $out->addHTML( wfElement( 'form', array( 'method' => 'post', 'action' => $wlTitle->getLocalUrl( 'action=clear' ) ), NULL ) );
 491                                 $out->addWikiText( wfMsgExt( 'watchlistcount', array( 'parsemag', 'escape'), $wgLang->formatNum( $count ) ) );
 492                                 $out->addWikiText( wfMsg( 'watchlistcleartext' ) );
 493                                 $out->addHTML(
 494                                         wfHidden( 'token', $wgUser->editToken( 'clearwatchlist' ) ) .
 495                                         wfElement( 'input', array( 'type' => 'submit', 'name' => 'submit', 'value' => wfMsgHtml( 'watchlistclearbutton' ) ), '' ) .
 496                                         wfCloseElement( 'form' )
 497                                 );
 498                         }
 499                         return( true );
 500                 } else {
 501                         # Nothing on the watchlist; nothing to do here
 502                         $out->addWikiText( wfMsg( 'nowatchlist' ) );
 503                         $out->returnToMain();
 504                         return( true );
 505                 }
 506         } else {
 507                 return( false );
 508         }
 509 }
 510 ?>