includes/LogEventsList.php

   1 <?php
   2 # Copyright (C) 2004 Brion Vibber <brion@pobox.com>, 2008 Aaron Schulz
   3 # http://www.mediawiki.org/
   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 class LogEventsList {
  21         const NO_ACTION_LINK = 1;
  22
  23         private $skin;
  24         public $flags;
  25
  26         function __construct( &$skin, $flags = 0 ) {
  27                 $this->skin =& $skin;
  28                 $this->flags = $flags;
  29                 $this->preCacheMessages();
  30         }
  31
  32         /**
  33          * As we use the same small set of messages in various methods and that
  34          * they are called often, we call them once and save them in $this->message
  35          */
  36         private function preCacheMessages() {
  37                 // Precache various messages
  38                 if( !isset( $this->message ) ) {
  39                         $messages = 'revertmerge protect_change unblocklink revertmove undeletelink revdel-restore rev-delundel';
  40                         foreach( explode(' ', $messages ) as $msg ) {
  41                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escape') );
  42                         }
  43                 }
  44         }
  45
  46         /**
  47          * Set page title and show header for this log type
  48          * @param OutputPage $out where to send output
  49          * @param strin $type
  50          */
  51         public function showHeader( $out, $type ) {
  52                 if( LogPage::isLogType( $type ) ) {
  53                         $out->setPageTitle( LogPage::logName( $type ) );
  54                         $out->addWikiText( LogPage::logHeader( $type ) );
  55                 }
  56         }
  57
  58         /**
  59          * Show options for the log list
  60          * @param OutputPage $out where to send output
  61          * @param string $type,
  62          * @param string $user,
  63          * @param string $page,
  64          * @param string $pattern
  65          */
  66         public function showOptions( $out, $type, $user, $page, $pattern ) {
  67                 global $wgScript, $wgMiserMode;
  68                 $action = htmlspecialchars( $wgScript );
  69                 $title = SpecialPage::getTitleFor( 'Log' );
  70                 $special = htmlspecialchars( $title->getPrefixedDBkey() );
  71                 $out->addHTML( "<form action=\"$action\" method=\"get\"><fieldset>" .
  72                         Xml::element( 'legend', array(), wfMsg( 'log' ) ) .
  73                         Xml::hidden( 'title', $special ) . "\n" .
  74                         $this->getTypeMenu( $type ) . "\n" .
  75                         $this->getUserInput( $user ) . "\n" .
  76                         $this->getTitleInput( $page ) . "\n" .
  77                         ( !$wgMiserMode ? ($this->getTitlePattern( $pattern )."\n") : "" ) .
  78                         Xml::submitButton( wfMsg( 'allpagessubmit' ) ) . "\n" .
  79                         "</fieldset></form>" );
  80         }
  81
  82         /**
  83          * @return string Formatted HTML
  84          */
  85         private function getTypeMenu( $queryType ) {
  86                 global $wgLogRestrictions, $wgUser;
  87
  88                 $out = "<select name='type'>\n";
  89
  90                 $validTypes = LogPage::validTypes();
  91                 $m = array(); // Temporary array
  92
  93                 // First pass to load the log names
  94                 foreach( $validTypes as $type ) {
  95                         $text = LogPage::logName( $type );
  96                         $m[$text] = $type;
  97                 }
  98
  99                 // Second pass to sort by name
 100                 ksort($m);
 101
 102                 // Third pass generates sorted XHTML content
 103                 foreach( $m as $text => $type ) {
 104                         $selected = ($type == $queryType);
 105                         // Restricted types
 106                         if ( isset($wgLogRestrictions[$type]) ) {
 107                                 if ( $wgUser->isAllowed( $wgLogRestrictions[$type] ) ) {
 108                                         $out .= Xml::option( $text, $type, $selected ) . "\n";
 109                                 }
 110                         } else {
 111                                 $out .= Xml::option( $text, $type, $selected ) . "\n";
 112                         }
 113                 }
 114
 115                 $out .= '</select>';
 116                 return $out;
 117         }
 118
 119         /**
 120          * @return string Formatted HTML
 121          */
 122         private function getUserInput( $user ) {
 123                 return Xml::inputLabel( wfMsg( 'specialloguserlabel' ), 'user', 'user', 12, $user );
 124         }
 125
 126         /**
 127          * @return string Formatted HTML
 128          */
 129         private function getTitleInput( $title ) {
 130                 return Xml::inputLabel( wfMsg( 'speciallogtitlelabel' ), 'page', 'page', 20, $title );
 131         }
 132
 133         /**
 134          * @return boolean Checkbox
 135          */
 136         private function getTitlePattern( $pattern ) {
 137                 return Xml::checkLabel( wfMsg( 'log-title-wildcard' ), 'pattern', 'pattern', $pattern );
 138         }
 139
 140         public function beginLogEventsList() {
 141                 return "<ul>\n";
 142         }
 143
 144         public function endLogEventsList() {
 145                 return "</ul>\n";
 146         }
 147
 148                 /**
 149          * @param Row $row a single row from the result set
 150          * @return string Formatted HTML list item
 151          * @private
 152          */
 153         public function logLine( $row ) {
 154                 global $wgLang, $wgUser, $wgContLang;
 155                 $skin = $wgUser->getSkin();
 156                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 157                 $time = $wgLang->timeanddate( wfTimestamp(TS_MW, $row->log_timestamp), true );
 158                 // Enter the existence or non-existence of this page into the link cache,
 159                 // for faster makeLinkObj() in LogPage::actionText()
 160                 $linkCache =& LinkCache::singleton();
 161                 $linkCache->addLinkObj( $title );
 162                 // User links
 163                 if( self::isDeleted($row,LogPage::DELETED_USER) ) {
 164                         $userLink = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 165                 } else {
 166                         $userLink = $this->skin->userLink( $row->log_user, $row->user_name ) .
 167                                 $this->skin->userToolLinksRedContribs( $row->log_user, $row->user_name );
 168                 }
 169                 // Comment
 170                 if( self::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 171                         $comment = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 172                 } else {
 173                         $comment = $wgContLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 174                 }
 175                 // Extract extra parameters
 176                 $paramArray = LogPage::extractParams( $row->log_params );
 177                 $revert = $del = '';
 178                 // Some user can hide log items and have review links
 179                 if( $wgUser->isAllowed( 'deleterevision' ) ) {
 180                         $del = $this->showhideLinks( $row ) . ' ';
 181                 }
 182                 // Add review links and such...
 183                 if( !($this->flags & self::NO_ACTION_LINK) && !($row->log_deleted & LogPage::DELETED_ACTION) ) {
 184                         if( $row->log_type == 'move' && isset( $paramArray[0] ) && $wgUser->isAllowed( 'move' ) ) {
 185                                 $destTitle = Title::newFromText( $paramArray[0] );
 186                                 if( $destTitle ) {
 187                                         $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
 188                                                 $this->message['revertmove'],
 189                                                 'wpOldTitle=' . urlencode( $destTitle->getPrefixedDBkey() ) .
 190                                                 '&wpNewTitle=' . urlencode( $title->getPrefixedDBkey() ) .
 191                                                 '&wpReason=' . urlencode( wfMsgForContent( 'revertmove' ) ) .
 192                                                 '&wpMovetalk=0' ) . ')';
 193                                 }
 194                         // Show undelete link
 195                         } else if( $row->log_action == 'delete' && $wgUser->isAllowed( 'delete' ) ) {
 196                                 $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete' ),
 197                                         $this->message['undeletelink'], 'target='. urlencode( $title->getPrefixedDBkey() ) ) . ')';
 198                         // Show unblock link
 199                         } else if( $row->log_action == 'block' && $wgUser->isAllowed( 'block' ) ) {
 200                                 $revert = '(' .  $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Ipblocklist' ),
 201                                         $this->message['unblocklink'],
 202                                         'action=unblock&ip=' . urlencode( $row->log_title ) ) . ')';
 203                         // Show change protection link
 204                         } else if( ( $row->log_action == 'protect' || $row->log_action == 'modify' ) && $wgUser->isAllowed( 'protect' ) ) {
 205                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $title, $this->message['protect_change'], 'action=unprotect' ) . ')';
 206                         // Show unmerge link
 207                         } else if ( $row->log_action == 'merge' ) {
 208                                 $merge = SpecialPage::getTitleFor( 'Mergehistory' );
 209                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $merge, $this->message['revertmerge'],
 210                                         wfArrayToCGI(
 211                                                 array('target' => $paramArray[0], 'dest' => $title->getPrefixedText(), 'mergepoint' => $paramArray[1] )
 212                                         )
 213                                 ) . ')';
 214                         // If an edit was hidden from a page give a review link to the history
 215                         } else if( $row->log_action == 'revision' && $wgUser->isAllowed( 'deleterevision' ) && !empty( $paramArray ) ) {
 216                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 217                                 // Different revision types use different URL params...
 218                                 $subtype = isset($paramArray[2]) ? $paramArray[1] : '';
 219                                 // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 220                                 $Ids = explode( ',', $paramArray[2] );
 221                                 if( count($Ids) == 1 ) {
 222                                         $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 223                                                 wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $Ids[0] ) ) );
 224                                 } else {
 225                                         $revert .= $this->message['revdel-restore'].':';
 226                                         foreach( $Ids as $n => $id ) {
 227                                                 $revert .= ' '.$this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
 228                                                         wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $id ) ) );
 229                                         }
 230                                 }
 231                                 $revert = "($revert)";
 232                         // Hidden log items, give review link
 233                         } else if( $row->log_action == 'event' && $wgUser->isAllowed( 'deleterevision' ) ) {
 234                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 235                                 $revert .= $this->message['revdel-restore'];
 236                                 $Ids = explode( ',', $paramArray[0] );
 237                                 // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 238                                 if( count($Ids) == 1 ) {
 239                                         $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 240                                                 wfArrayToCGI( array('logid' => $Ids[0] ) ) );
 241                                 } else {
 242                                         foreach( $Ids as $n => $id ) {
 243                                                 $revert .= $this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
 244                                                         wfArrayToCGI( array('logid' => $id ) ) );
 245                                         }
 246                                 }
 247                                 $revert = "($revert)";
 248                         } else {
 249                                 wfRunHooks( 'LogLine', array( $row->log_type, $row->log_action, $title, $paramArray,
 250                                         &$comment, &$revert, $row->log_timestamp ) );
 251                                 // wfDebug( "Invoked LogLine hook for " $row->log_type . ", " . $row->log_action . "\n" );
 252                                 // Do nothing. The implementation is handled by the hook modifiying the passed-by-ref parameters.
 253                         }
 254                 }
 255                 // Event description
 256                 if( self::isDeleted($row,LogPage::DELETED_ACTION) ) {
 257                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 258                 } else {
 259                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title, $this->skin, $paramArray, true );
 260                 }
 261
 262                 return "<li>$del$time $userLink $action $comment $revert</li>\n";
 263         }
 264
 265         /**
 266          * @param Row $row
 267          * @private
 268          */
 269         private function showhideLinks( $row ) {
 270                 global $wgAllowLogDeletion;
 271
 272                 if( !$wgAllowLogDeletion )
 273                         return "";
 274
 275                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 276                 // If event was hidden from sysops
 277                 if( !self::userCan( $row, LogPage::DELETED_RESTRICTED ) ) {
 278                         $del = $this->message['rev-delundel'];
 279                 } else if( $row->log_type == 'suppress' ) {
 280                         // No one should be hiding from the oversight log
 281                         $del = $this->message['rev-delundel'];
 282                 } else {
 283                         $del = $this->skin->makeKnownLinkObj( $revdel, $this->message['rev-delundel'], 'logid='.$row->log_id );
 284                         // Bolden oversighted content
 285                         if( self::isDeleted( $row, LogPage::DELETED_RESTRICTED ) )
 286                                 $del = "<strong>$del</strong>";
 287                 }
 288                 return "<tt>(<small>$del</small>)</tt>";
 289         }
 290
 291         /**
 292          * Determine if the current user is allowed to view a particular
 293          * field of this log row, if it's marked as deleted.
 294          * @param Row $row
 295          * @param int $field
 296          * @return bool
 297          */
 298         public static function userCan( $row, $field ) {
 299                 if( ( $row->log_deleted & $field ) == $field ) {
 300                         global $wgUser;
 301                         $permission = ( $row->log_deleted & LogPage::DELETED_RESTRICTED ) == LogPage::DELETED_RESTRICTED
 302                                 ? 'hiderevision'
 303                                 : 'deleterevision';
 304                         wfDebug( "Checking for $permission due to $field match on $row->log_deleted\n" );
 305                         return $wgUser->isAllowed( $permission );
 306                 } else {
 307                         return true;
 308                 }
 309         }
 310
 311         /**
 312          * @param Row $row
 313          * @param int $field one of DELETED_* bitfield constants
 314          * @return bool
 315          */
 316         public static function isDeleted( $row, $field ) {
 317                 return ($row->log_deleted & $field) == $field;
 318         }
 319
 320         /**
 321          * Quick function to show a short log extract
 322          * @param OutputPage $out
 323          * @param string $type
 324          * @param string $page
 325          */
 326          public static function showLogExtract( $out, $type='', $page='', $user='' ) {
 327                 global $wgUser;
 328                 # Insert list of top 50 or so items
 329                 $loglist = new LogEventsList( $wgUser->getSkin() );
 330                 $pager = new LogPager( $loglist, $type, $user, $page, '' );
 331                 $logBody = $pager->getBody();
 332                 if( $logBody ) {
 333                         $out->addHTML(
 334                                 $loglist->beginLogEventsList() .
 335                                 $logBody .
 336                                 $loglist->endLogEventsList()
 337                         );
 338                 } else {
 339                         $out->addWikiMsg( 'logempty' );
 340                 }
 341          }
 342
 343          /**
 344          * SQL clause to skip forbidden log types for this user
 345          * @param Database $db
 346          * @returns mixed (string or false)
 347          */
 348         public static function getExcludeClause( $db ) {
 349                 global $wgLogRestrictions, $wgUser;
 350                 // Reset the array, clears extra "where" clauses when $par is used
 351                 $hiddenLogs = array();
 352                 // Don't show private logs to unpriviledged users
 353                 foreach( $wgLogRestrictions as $logtype => $right ) {
 354                         if( !$wgUser->isAllowed($right) ) {
 355                                 $safetype = $db->strencode( $logtype );
 356                                 $hiddenLogs[] = "'$safetype'";
 357                         }
 358                 }
 359                 if( !empty($hiddenLogs) ) {
 360                         return 'log_type NOT IN(' . implode(',',$hiddenLogs) . ')';
 361                 }
 362                 return false;
 363         }
 364 }
 365
 366 /**
 367  * @addtogroup Pager
 368  */
 369 class LogPager extends ReverseChronologicalPager {
 370         private $type = '', $user = '', $title = '', $pattern = '';
 371         public $mLogEventsList;
 372         /**
 373         * constructor
 374         * @param LogEventsList $loglist,
 375         * @param string $type,
 376         * @param string $user,
 377         * @param string $page,
 378         * @param string $pattern
 379         * @param array $conds
 380         */
 381         function __construct( $loglist, $type='', $user='', $title='', $pattern='', $conds = array() ) {
 382                 parent::__construct();
 383                 $this->mConds = $conds;
 384
 385                 $this->mLogEventsList = $loglist;
 386
 387                 $this->limitType( $type );
 388                 $this->limitUser( $user );
 389                 $this->limitTitle( $title, $pattern );
 390         }
 391
 392         /**
 393          * Set the log reader to return only entries of the given type.
 394          * Type restrictions enforced here
 395          * @param string $type A log type ('upload', 'delete', etc)
 396          * @private
 397          */
 398         private function limitType( $type ) {
 399                 global $wgLogRestrictions, $wgUser;
 400                 // Don't even show header for private logs; don't recognize it...
 401                 if( isset($wgLogRestrictions[$type]) && !$wgUser->isAllowed($wgLogRestrictions[$type]) ) {
 402                         $type = '';
 403                 }
 404                 // Don't show private logs to unpriviledged users
 405                 $hideLogs = LogEventsList::getExcludeClause( $this->mDb );
 406                 if( $hideLogs !== false ) {
 407                         $this->mConds[] = $hideLogs;
 408                 }
 409                 if( empty($type) ) {
 410                         return false;
 411                 }
 412                 $this->type = $type;
 413                 $this->mConds['log_type'] = $type;
 414         }
 415
 416         /**
 417          * Set the log reader to return only entries by the given user.
 418          * @param string $name (In)valid user name
 419          * @private
 420          */
 421         function limitUser( $name ) {
 422                 if( $name == '' ) {
 423                         return false;
 424                 }
 425                 $usertitle = Title::makeTitleSafe( NS_USER, $name );
 426                 if( is_null($usertitle) ) {
 427                         return false;
 428                 }
 429                 $this->user = $usertitle->getText();
 430                 /* Fetch userid at first, if known, provides awesome query plan afterwards */
 431                 $userid = User::idFromName( $this->user );
 432                 if( !$userid ) {
 433                         /* It should be nicer to abort query at all,
 434                            but for now it won't pass anywhere behind the optimizer */
 435                         $this->mConds[] = "NULL";
 436                 } else {
 437                         $this->mConds['log_user'] = $userid;
 438                 }
 439         }
 440
 441         /**
 442          * Set the log reader to return only entries affecting the given page.
 443          * (For the block and rights logs, this is a user page.)
 444          * @param string $page Title name as text
 445          * @private
 446          */
 447         function limitTitle( $page, $pattern ) {
 448                 global $wgMiserMode;
 449
 450                 $title = Title::newFromText( $page );
 451                 if( strlen($page) == 0 || !$title instanceof Title )
 452                         return false;
 453
 454                 $this->title = $title->getPrefixedText();
 455                 $this->pattern = $pattern;
 456                 $ns = $title->getNamespace();
 457                 if( $pattern && !$wgMiserMode ) {
 458                         # use escapeLike to avoid expensive search patterns like 't%st%'
 459                         $safetitle = $this->mDb->escapeLike( $title->getDBkey() );
 460                         $this->mConds['log_namespace'] = $ns;
 461                         $this->mConds[] = "log_title LIKE '$safetitle%'";
 462                 } else {
 463                         $this->mConds['log_namespace'] = $ns;
 464                         $this->mConds['log_title'] = $title->getDBkey();
 465                 }
 466         }
 467
 468         function getQueryInfo() {
 469                 $this->mConds[] = 'user_id = log_user';
 470                 # Hack this until live
 471                 global $wgAllowLogDeletion;
 472                 $log_id = $wgAllowLogDeletion ? 'log_id' : '0 AS log_id';
 473                 return array(
 474                         'tables' => array( 'logging', 'user' ),
 475                         'fields' => array( 'log_type', 'log_action', 'log_user', 'log_namespace', 'log_title',
 476                                 'log_params', 'log_comment', $log_id, 'log_deleted', 'log_timestamp', 'user_name' ),
 477                         'conds' => $this->mConds,
 478                         'options' => array()
 479                 );
 480         }
 481
 482         function getIndexField() {
 483                 return 'log_timestamp';
 484         }
 485
 486         function formatRow( $row ) {
 487                 return $this->mLogEventsList->logLine( $row );
 488         }
 489
 490         public function getType() {
 491                 return $this->type;
 492         }
 493
 494         public function getUser() {
 495                 return $this->user;
 496         }
 497
 498         public function getPage() {
 499                 return $this->title;
 500         }
 501
 502         public function getPattern() {
 503                 return $this->pattern;
 504         }
 505 }
 506
 507 /**
 508  *
 509  * @addtogroup SpecialPage
 510  */
 511 class LogReader {
 512         var $db, $joinClauses, $whereClauses;
 513         var $type = '', $user = '', $title = null, $pattern = false;
 514         /**
 515          * @param WebRequest $request For internal use use a FauxRequest object to pass arbitrary parameters.
 516          */
 517         function __construct( $request ) {
 518                 global $wgUser;
 519                 # Get parameters
 520                 $type = $request->getVal( 'type' );
 521                 $user = $request->getText( 'user' );
 522                 $title = $request->getText( 'page' );
 523                 $pattern = $request->getBool( 'pattern' );
 524
 525                 $loglist = new LogEventsList( $wgUser->getSkin() );
 526                 $this->pager = new LogPager( $loglist, $type, $user, $title, $pattern );
 527         }
 528
 529         /**
 530         * Is there at least one row?
 531         * @return bool
 532         */
 533         public function hasRows() {
 534                 return isset($this->pager) ? ($this->pager->getNumRows() > 0) : false;
 535         }
 536 }
 537
 538 /**
 539  *
 540  * @addtogroup SpecialPage
 541  */
 542 class LogViewer {
 543         const NO_ACTION_LINK = 1;
 544         /**
 545          * @var LogReader $reader
 546          */
 547         var $reader;
 548         var $numResults = 0;
 549         var $flags = 0;
 550
 551         /**
 552          * @param LogReader &$reader where to get our data from
 553          * @param integer $flags Bitwise combination of flags:
 554          *     LogEventsList::NO_ACTION_LINK   Don't show restore/unblock/block links
 555          */
 556         function __construct( &$reader, $flags = 0 ) {
 557                 global $wgUser;
 558                 $this->skin = $wgUser->getSkin();
 559                 $this->reader =& $reader;
 560                 $this->reader->pager->mLogEventsList->flags = $flags;
 561                 # Aliases for shorter code...
 562                 $this->pager =& $this->reader->pager;
 563                 $this->logEventsList =& $this->reader->pager->mLogEventsList;
 564         }
 565
 566         /**
 567          * Take over the whole output page in $wgOut with the log display.
 568          */
 569         public function show() {
 570                 global $wgOut;
 571                 # Set title and add header
 572                 $this->logEventsList->showHeader( $wgOut, $pager->getType() );
 573                 # Show form options
 574                 $this->logEventsList->showOptions( $wgOut, $this->pager->getType(), $this->pager->getUser(),
 575                         $this->pager->getPage(), $this->pager->getPattern() );
 576                 # Insert list
 577                 $logBody = $this->pager->getBody();
 578                 if( $logBody ) {
 579                         $wgOut->addHTML(
 580                                 $this->pager->getNavigationBar() .
 581                                 $this->logEventsList->beginLogEventsList() .
 582                                 $logBody .
 583                                 $this->logEventsList->endLogEventsList() .
 584                                 $this->pager->getNavigationBar()
 585                         );
 586                 } else {
 587                         $wgOut->addWikiMsg( 'logempty' );
 588                 }
 589         }
 590
 591         /**
 592          * Output just the list of entries given by the linked LogReader,
 593          * with extraneous UI elements. Use for displaying log fragments in
 594          * another page (eg at Special:Undelete)
 595          * @param OutputPage $out where to send output
 596          */
 597         public function showList( &$out ) {
 598                 $logBody = $this->pager->getBody();
 599                 if( $logBody ) {
 600                         $out->addHTML(
 601                                 $this->logEventsList->beginLogEventsList() .
 602                                 $logBody .
 603                                 $this->logEventsList->endLogEventsList()
 604                         );
 605                 } else {
 606                         $out->addWikiMsg( 'logempty' );
 607                 }
 608         }
 609 }
 610