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         $specialTitle = SpecialPage::getTitleFor( 'Watchlist' );
  26         $wgOut->setRobotPolicy( 'noindex,nofollow' );
  27
  28         # Anons don't get a watchlist
  29         if( $wgUser->isAnon() ) {
  30                 $wgOut->setPageTitle( wfMsg( 'watchnologin' ) );
  31                 $llink = Linker::makeKnownLinkObj( SpecialPage::getTitleFor( 'Userlogin' ), wfMsgHtml( 'loginreqlink' ), 'returnto=' . $specialTitle->getPrefixedUrl() );
  32                 $wgOut->addHtml( wfMsgWikiHtml( 'watchlistanontext', $llink ) );
  33                 return;
  34         } else {
  35                 $wgOut->setPageTitle( wfMsg( 'watchlist' ) );
  36                 $wgOut->setSubtitle( wfMsgWikiHtml( 'watchlistfor', htmlspecialchars( $wgUser->getName() ) ) );
  37         }
  38
  39         if( wlHandleClear( $wgOut, $wgRequest, $par ) ) {
  40                 return;
  41         }
  42
  43         $defaults = array(
  44         /* float */ 'days' => floatval( $wgUser->getOption( 'watchlistdays' ) ), /* 3.0 or 0.5, watch further below */
  45         /* bool  */ 'hideOwn' => (int)$wgUser->getBoolOption( 'watchlisthideown' ),
  46         /* bool  */ 'hideBots' => (int)$wgUser->getBoolOption( 'watchlisthidebots' ),
  47         /* ?     */ 'namespace' => 'all',
  48         );
  49
  50         extract($defaults);
  51
  52         # Extract variables from the request, falling back to user preferences or
  53         # other default values if these don't exist
  54         $prefs['days'    ] = floatval( $wgUser->getOption( 'watchlistdays' ) );
  55         $prefs['hideown' ] = $wgUser->getBoolOption( 'watchlisthideown' );
  56         $prefs['hidebots'] = $wgUser->getBoolOption( 'watchlisthidebots' );
  57
  58         # Get query variables
  59         $days = $wgRequest->getVal( 'days', $prefs['days'] );
  60         $hideOwn = $wgRequest->getBool( 'hideOwn', $prefs['hideown'] );
  61         $hideBots = $wgRequest->getBool( 'hideBots', $prefs['hidebots'] );
  62
  63         # Get namespace value, if supplied, and prepare a WHERE fragment
  64         $nameSpace = $wgRequest->getIntOrNull( 'namespace' );
  65         if( !is_null( $nameSpace ) ) {
  66                 $nameSpace = intval( $nameSpace );
  67                 $nameSpaceClause = " AND rc_namespace = $nameSpace";
  68         } else {
  69                 $nameSpace = '';
  70                 $nameSpaceClause = '';
  71         }
  72
  73         # Watchlist editing
  74         $action = $wgRequest->getVal( 'action' );
  75         $remove = $wgRequest->getVal( 'remove' );
  76         $id = $wgRequest->getArray( 'id' );
  77
  78         $uid = $wgUser->getID();
  79         if( $wgEnotifWatchlist && $wgRequest->getVal( 'reset' ) && $wgRequest->wasPosted() ) {
  80                 $wgUser->clearAllNotifications( $uid );
  81         }
  82
  83   # Deleting items from watchlist
  84         if(($action == 'submit') && isset($remove) && is_array($id)) {
  85                 $wgOut->addWikiText( wfMsg( 'removingchecked' ) );
  86                 $wgOut->addHTML( '<p>' );
  87                 foreach($id as $one) {
  88                         $t = Title::newFromURL( $one );
  89                         if( !is_null( $t ) ) {
  90                                 $wl = WatchedItem::fromUserTitle( $wgUser, $t );
  91                                 if( $wl->removeWatch() === false ) {
  92                                         $wgOut->addHTML( wfMsg( 'couldntremove', htmlspecialchars($one) ) . "<br />\n" );
  93                                 } else {
  94                                         wfRunHooks('UnwatchArticle', array(&$wgUser, new Article($t)));
  95                                         $wgOut->addHTML( '(' . htmlspecialchars($one) . ')<br />' );
  96                                 }
  97                         } else {
  98                                 $wgOut->addHTML( wfMsg( 'iteminvalidname', htmlspecialchars($one) ) . "<br />\n" );
  99                         }
 100                 }
 101                 $wgOut->addHTML( "</p>\n<p>" . wfMsg( 'wldone' ) . "</p>\n" );
 102         }
 103
 104         if ( $wgUseWatchlistCache ) {
 105                 $memckey = wfMemcKey( 'watchlist', 'id', $wgUser->getId() );
 106                 $cache_s = @$wgMemc->get( $memckey );
 107                 if( $cache_s ){
 108                         $wgOut->addWikiText( wfMsg('wlsaved') );
 109                         $wgOut->addHTML( $cache_s );
 110                         return;
 111                 }
 112         }
 113
 114         $dbr =& wfGetDB( DB_SLAVE );
 115         extract( $dbr->tableNames( 'page', 'revision', 'watchlist', 'recentchanges' ) );
 116
 117         $sql = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_user=$uid";
 118         $res = $dbr->query( $sql, $fname );
 119         $s = $dbr->fetchObject( $res );
 120
 121 #       Patch *** A1 *** (see A2 below)
 122 #       adjust for page X, talk:page X, which are both stored separately, but treated together
 123         $nitems = floor($s->n / 2);
 124 #       $nitems = $s->n;
 125
 126         if($nitems == 0) {
 127                 $wgOut->addWikiText( wfMsg( 'nowatchlist' ) );
 128                 return;
 129         }
 130
 131         if( is_null($days) || !is_numeric($days) ) {
 132                 $big = 1000; /* The magical big */
 133                 if($nitems > $big) {
 134                         # Set default cutoff shorter
 135                         $days = $defaults['days'] = (12.0 / 24.0); # 12 hours...
 136                 } else {
 137                         $days = $defaults['days']; # default cutoff for shortlisters
 138                 }
 139         } else {
 140                 $days = floatval($days);
 141         }
 142
 143         // Dump everything here
 144         $nondefaults = array();
 145
 146         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 147         wfAppendToArrayIfNotDefault( 'hideOwn', (int)$hideOwn, $defaults, $nondefaults);
 148         wfAppendToArrayIfNotDefault( 'hideBots', (int)$hideBots, $defaults, $nondefaults);
 149         wfAppendToArrayIfNotDefault( 'namespace', $nameSpace, $defaults, $nondefaults );
 150
 151         if ( $days <= 0 ) {
 152                 $docutoff = '';
 153                 $cutoff = false;
 154                 $npages = wfMsg( 'watchlistall1' );
 155         } else {
 156                 $docutoff = "AND rev_timestamp > '" .
 157                   ( $cutoff = $dbr->timestamp( time() - intval( $days * 86400 ) ) )
 158                   . "'";
 159                   /*
 160                   $sql = "SELECT COUNT(*) AS n FROM $page, $revision  WHERE rev_timestamp>'$cutoff' AND page_id=rev_page";
 161                   $res = $dbr->query( $sql, $fname );
 162                   $s = $dbr->fetchObject( $res );
 163                   $npages = $s->n;
 164                   */
 165                   $npages = 40000 * $days;
 166
 167         }
 168
 169         /* Edit watchlist form */
 170         if($wgRequest->getBool('edit') || $par == 'edit' ) {
 171                 $wgOut->addWikiText( wfMsg( 'watchlistcontains', $wgLang->formatNum( $nitems ) ) .
 172                         "\n\n" . wfMsg( 'watcheditlist' ) );
 173
 174                 $wgOut->addHTML( '<form action=\'' .
 175                         $specialTitle->escapeLocalUrl( 'action=submit' ) .
 176                         "' method='post'>\n" );
 177
 178 #               Patch A2
 179 #               The following was proposed by KTurner 07.11.2004 to T.Gries
 180 #               $sql = "SELECT distinct (wl_namespace & ~1),wl_title FROM $watchlist WHERE wl_user=$uid";
 181                 $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";
 182
 183                 $res = $dbr->query( $sql, $fname );
 184
 185                 # Batch existence check
 186                 $linkBatch = new LinkBatch();
 187                 while( $row = $dbr->fetchObject( $res ) )
 188                         $linkBatch->addObj( Title::makeTitleSafe( $row->wl_namespace, $row->wl_title ) );
 189                 $linkBatch->execute();
 190                 if( $dbr->numRows( $res ) > 0 )
 191                         $dbr->dataSeek( $res, 0 ); # Let's do the time warp again!
 192
 193                 $list = array();
 194                 while( $s = $dbr->fetchObject( $res ) ) {
 195                         $list[$s->wl_namespace][$s->wl_title] = $s->page_is_redirect;
 196                 }
 197
 198                 // TODO: Display a TOC
 199                 foreach($list as $ns => $titles) {
 200                         if (Namespace::isTalk($ns))
 201                                 continue;
 202                         if ($ns != NS_MAIN)
 203                                 $wgOut->addHTML( '<h2>' . $wgContLang->getFormattedNsText( $ns ) . '</h2>' );
 204                         $wgOut->addHTML( '<ul>' );
 205                         foreach( $titles as $title => $redir ) {
 206                                 $titleObj = Title::makeTitle( $ns, $title );
 207                                 if( is_null( $titleObj ) ) {
 208                                         $wgOut->addHTML(
 209                                                 '<!-- bad title "' .
 210                                                 htmlspecialchars( $s->wl_title ) . '" in namespace ' . $s->wl_namespace . " -->\n"
 211                                         );
 212                                 } else {
 213                                         global $wgContLang;
 214                                         $toolLinks = array();
 215                                         $titleText = $titleObj->getPrefixedText();
 216                                         $pageLink = Linker::makeLinkObj( $titleObj );
 217                                         $toolLinks[] = Linker::makeLinkObj( $titleObj->getTalkPage(), $wgLang->getNsText( NS_TALK ) );
 218                                         if( $titleObj->exists() )
 219                                                 $toolLinks[] = Linker::makeKnownLinkObj( $titleObj, wfMsgHtml( 'history_short' ), 'action=history' );
 220                                         $toolLinks = '(' . implode( ' | ', $toolLinks ) . ')';
 221                                         $checkbox = '<input type="checkbox" name="id[]" value="' . htmlspecialchars( $titleObj->getPrefixedText() ) . '" /> ' . ( $wgContLang->isRTL() ? '&rlm;' : '&lrm;' );
 222                                         if( $redir ) {
 223                                                 $spanopen = '<span class="watchlistredir">';
 224                                                 $spanclosed = '</span>';
 225                                         } else {
 226                                                 $spanopen = $spanclosed = '';
 227                                         }
 228
 229                                         $wgOut->addHTML( "<li>{$checkbox}{$spanopen}{$pageLink}{$spanclosed} {$toolLinks}</li>\n" );
 230                                 }
 231                         }
 232                         $wgOut->addHTML( '</ul>' );
 233                 }
 234                 $wgOut->addHTML(
 235                         wfSubmitButton( wfMsg('removechecked'), array('name' => 'remove') ) .
 236                         "\n</form>\n"
 237                 );
 238
 239                 return;
 240         }
 241
 242         # If the watchlist is relatively short, it's simplest to zip
 243         # down its entirety and then sort the results.
 244
 245         # If it's relatively long, it may be worth our while to zip
 246         # through the time-sorted page list checking for watched items.
 247
 248         # Up estimate of watched items by 15% to compensate for talk pages...
 249
 250         # Toggles
 251         $andHideOwn = $hideOwn ? "AND (rc_user <> $uid)" : '';
 252         $andHideBots = $hideBots ? "AND (rc_bot = 0)" : '';
 253
 254         # Show watchlist header
 255         $header = '';
 256         if( $wgUser->getOption( 'enotifwatchlistpages' ) && $wgEnotifWatchlist) {
 257                 $header .= wfMsg( 'wlheader-enotif' ) . "\n";
 258         }
 259         if ( $wgEnotifWatchlist && $wgShowUpdatedMarker ) {
 260                 $header .= wfMsg( 'wlheader-showupdated' ) . "\n";
 261         }
 262
 263   # Toggle watchlist content (all recent edits or just the latest)
 264         if( $wgUser->getOption( 'extendwatchlist' )) {
 265                 $andLatest='';
 266                 $limitWatchlist = 'LIMIT ' . intval( $wgUser->getOption( 'wllimit' ) );
 267         } else {
 268                 $andLatest= 'AND rc_this_oldid=page_latest';
 269                 $limitWatchlist = '';
 270         }
 271
 272         # TODO: Consider removing the third parameter
 273         $header .= wfMsgExt( 'watchdetails', array( 'parsemag' ), $wgLang->formatNum( $nitems ),
 274                 $wgLang->formatNum( $npages ), '',
 275                 $specialTitle->getFullUrl( 'edit=yes' ) );
 276         $wgOut->addWikiText( $header );
 277
 278         if ( $wgEnotifWatchlist && $wgShowUpdatedMarker ) {
 279                 $wgOut->addHTML( '<form action="' .
 280                         $specialTitle->escapeLocalUrl() .
 281                         '" method="post"><input type="submit" name="dummy" value="' .
 282                         htmlspecialchars( wfMsg( 'enotif_reset' ) ) .
 283                         '" /><input type="hidden" name="reset" value="all" /></form>' .
 284                         "\n\n" );
 285         }
 286
 287         $sql = "SELECT
 288           rc_namespace AS page_namespace, rc_title AS page_title,
 289           rc_comment AS rev_comment, rc_cur_id AS page_id,
 290           rc_user AS rev_user, rc_user_text AS rev_user_text,
 291           rc_timestamp AS rev_timestamp, rc_minor AS rev_minor_edit,
 292           rc_this_oldid AS rev_id,
 293           rc_last_oldid, rc_id, rc_patrolled,
 294           rc_new AS page_is_new,wl_notificationtimestamp
 295           FROM $watchlist,$recentchanges,$page
 296           WHERE wl_user=$uid
 297           AND wl_namespace=rc_namespace
 298           AND wl_title=rc_title
 299           AND rc_timestamp > '$cutoff'
 300           AND rc_cur_id=page_id
 301           $andLatest
 302           $andHideOwn
 303           $andHideBots
 304           $nameSpaceClause
 305           ORDER BY rc_timestamp DESC
 306           $limitWatchlist";
 307
 308         $res = $dbr->query( $sql, $fname );
 309         $numRows = $dbr->numRows( $res );
 310
 311         /* Start bottom header */
 312         $wgOut->addHTML( "<hr />\n" );
 313
 314         if($days >= 1) {
 315                 $wgOut->addWikiText( wfMsg( 'rcnote', $wgLang->formatNum( $numRows ),
 316                         $wgLang->formatNum( $days ), $wgLang->timeAndDate( wfTimestampNow(), true ) ) . '<br />' , false );
 317         } elseif($days > 0) {
 318                 $wgOut->addWikiText( wfMsg( 'wlnote', $wgLang->formatNum( $numRows ),
 319                         $wgLang->formatNum( round($days*24) ) ) . '<br />' , false );
 320         }
 321
 322         $wgOut->addHTML( "\n" . wlCutoffLinks( $days, 'Watchlist', $nondefaults ) . "<br />\n" );
 323
 324         # Spit out some control panel links
 325         $thisTitle = SpecialPage::getTitleFor( 'Watchlist' );
 326         $linkElements = array( 'hideOwn' => 'wlhideshowown', 'hideBots' => 'wlhideshowbots' );
 327
 328         # Problems encountered using the fancier method
 329         $label = $hideBots ? wfMsgHtml( 'show' ) : wfMsgHtml( 'hide' );
 330         $linkBits = wfArrayToCGI( array( 'hideBots' => 1 - (int)$hideBots ), $nondefaults );
 331         $link = Linker::makeKnownLinkObj( $thisTitle, $label, $linkBits );
 332         $links[] = wfMsgHtml( 'wlhideshowbots', $link );
 333
 334         $label = $hideOwn ? wfMsgHtml( 'show' ) : wfMsgHtml( 'hide' );
 335         $linkBits = wfArrayToCGI( array( 'hideOwn' => 1 - (int)$hideOwn ), $nondefaults );
 336         $link = Linker::makeKnownLinkObj( $thisTitle, $label, $linkBits );
 337         $links[] = wfMsgHtml( 'wlhideshowown', $link );
 338
 339         $wgOut->addHTML( implode( ' | ', $links ) );
 340
 341         # Form for namespace filtering
 342         $wgOut->addHTML( "\n" .
 343                 wfOpenElement( 'form', array(
 344                                 'method' => 'post',
 345                                 'action' => $thisTitle->getLocalURL(),
 346                         ) ) .
 347                 wfMsgExt( 'namespace', array( 'parseinline') ) .
 348                 HTMLnamespaceselector( $nameSpace, '' ) . "\n" .
 349                 ( $hideOwn ? wfHidden('hideown', 1)."\n" : '' ) .
 350                 ( $hideBots ? wfHidden('hidebots', 1)."\n" : '' ) .
 351                 wfHidden( 'days', $days ) . "\n" .
 352                 wfSubmitButton( wfMsgExt( 'allpagessubmit', array( 'escape') ) ) . "\n" .
 353                 wfCloseElement( 'form' ) . "\n"
 354         );
 355
 356         if ( $numRows == 0 ) {
 357                 $wgOut->addWikitext( "<br />" . wfMsg( 'watchnochange' ), false );
 358                 return;
 359         }
 360
 361         /* End bottom header */
 362
 363         $list = ChangesList::newFromUser( $wgUser );
 364
 365         $s = $list->beginRecentChangesList();
 366         $counter = 1;
 367         while ( $obj = $dbr->fetchObject( $res ) ) {
 368                 # Make fake RC entry
 369                 $rc = RecentChange::newFromCurRow( $obj, $obj->rc_last_oldid );
 370                 $rc->counter = $counter++;
 371
 372                 if ( $wgShowUpdatedMarker ) {
 373                         $updated = $obj->wl_notificationtimestamp;
 374                 } else {
 375                         // Same visual appearance as MW 1.4
 376                         $updated = true;
 377                 }
 378
 379                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 380                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" .wfStrencode($obj->page_title). "' AND wl_namespace='{$obj->page_namespace}'" ;
 381                         $res3 = $dbr->query( $sql3, DB_READ, $fname );
 382                         $x = $dbr->fetchObject( $res3 );
 383                         $rc->numberofWatchingusers = $x->n;
 384                 } else {
 385                         $rc->numberofWatchingusers = 0;
 386                 }
 387
 388                 $s .= $list->recentChangesLine( $rc, $updated );
 389         }
 390         $s .= $list->endRecentChangesList();
 391
 392         $dbr->freeResult( $res );
 393         $wgOut->addHTML( $s );
 394
 395         if ( $wgUseWatchlistCache ) {
 396                 $wgMemc->set( $memckey, $s, $wgWLCacheTimeout);
 397         }
 398
 399 }
 400
 401 function wlHoursLink( $h, $page, $options = array() ) {
 402         global $wgLang, $wgContLang;
 403         $s = Linker::makeKnownLink(
 404           $wgContLang->specialPage( $page ),
 405           $wgLang->formatNum( $h ),
 406           wfArrayToCGI( array('days' => ($h / 24.0)), $options ) );
 407         return $s;
 408 }
 409
 410 function wlDaysLink( $d, $page, $options = array() ) {
 411         global $wgLang, $wgContLang;
 412         $s = Linker::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         $cl = '';
 426         $i = 0;
 427         foreach( $hours as $h ) {
 428                 $hours[$i++] = wlHoursLink( $h, $page, $options );
 429         }
 430         $i = 0;
 431         foreach( $days as $d ) {
 432                 $days[$i++] = wlDaysLink( $d, $page, $options );
 433         }
 434         return wfMsgExt('wlshowlast',
 435                 array('parseinline', 'replaceafter'),
 436                 implode(' | ', $hours),
 437                 implode(' | ', $days),
 438                 wlDaysLink( 0, $page, $options ) );
 439 }
 440
 441 /**
 442  * Count the number of items on a user's watchlist
 443  *
 444  * @param $talk Include talk pages
 445  * @return integer
 446  */
 447 function wlCountItems( &$user, $talk = true ) {
 448         $dbr =& wfGetDB( DB_SLAVE );
 449
 450         # Fetch the raw count
 451         $res = $dbr->select( 'watchlist', 'COUNT(*) AS count', array( 'wl_user' => $user->mId ), 'wlCountItems' );
 452         $row = $dbr->fetchObject( $res );
 453         $count = $row->count;
 454         $dbr->freeResult( $res );
 455
 456         # Halve to remove talk pages if needed
 457         if( !$talk )
 458                 $count = floor( $count / 2 );
 459
 460         return( $count );
 461 }
 462
 463 /**
 464  * Allow the user to clear their watchlist
 465  *
 466  * @param $out Output object
 467  * @param $request Request object
 468  * @param $par Parameters passed to the watchlist page
 469  * @return bool True if it's been taken care of; false indicates the watchlist
 470  *                              code needs to do something further
 471  */
 472 function wlHandleClear( &$out, &$request, $par ) {
 473         global $wgLang;
 474
 475         # Check this function has something to do
 476         if( $request->getText( 'action' ) == 'clear' || $par == 'clear' ) {
 477                 global $wgUser;
 478                 $out->setPageTitle( wfMsgHtml( 'clearwatchlist' ) );
 479                 $count = wlCountItems( $wgUser );
 480                 if( $count > 0 ) {
 481                         # See if we're clearing or confirming
 482                         if( $request->wasPosted() && $wgUser->matchEditToken( $request->getText( 'token' ), 'clearwatchlist' ) ) {
 483                                 # Clearing, so do it and report the result
 484                                 $dbw =& wfGetDB( DB_MASTER );
 485                                 $dbw->delete( 'watchlist', array( 'wl_user' => $wgUser->mId ), 'wlHandleClear' );
 486                                 $out->addWikiText( wfMsgExt( 'watchlistcleardone', array( 'parsemag', 'escape'), $wgLang->formatNum( $count ) ) );
 487                                 $out->returnToMain();
 488                         } else {
 489                                 # Confirming, so show a form
 490                                 $wlTitle = SpecialPage::getTitleFor( 'Watchlist' );
 491                                 $out->addHTML( wfElement( 'form', array( 'method' => 'post', 'action' => $wlTitle->getLocalUrl( 'action=clear' ) ), NULL ) );
 492                                 $out->addWikiText( wfMsgExt( 'watchlistcount', array( 'parsemag', 'escape'), $wgLang->formatNum( $count ) ) );
 493                                 $out->addWikiText( wfMsg( 'watchlistcleartext' ) );
 494                                 $out->addHTML(
 495                                         wfHidden( 'token', $wgUser->editToken( 'clearwatchlist' ) ) .
 496                                         wfElement( 'input', array( 'type' => 'submit', 'name' => 'submit', 'value' => wfMsgHtml( 'watchlistclearbutton' ) ), '' ) .
 497                                         wfCloseElement( 'form' )
 498                                 );
 499                         }
 500                         return( true );
 501                 } else {
 502                         # Nothing on the watchlist; nothing to do here
 503                         $out->addWikiText( wfMsg( 'nowatchlist' ) );
 504                         $out->returnToMain();
 505                         return( true );
 506                 }
 507         } else {
 508                 return( false );
 509         }
 510 }
 511 ?>