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->addHtml( 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
 156                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 157                 $time = $wgLang->timeanddate( wfTimestamp(TS_MW, $row->log_timestamp), true );
 158                 // User links
 159                 if( self::isDeleted($row,LogPage::DELETED_USER) ) {
 160                         $userLink = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 161                 } else {
 162                         $userLink = $this->skin->userLink( $row->log_user, $row->user_name ) .
 163                                 $this->skin->userToolLinks( $row->log_user, $row->user_name );
 164                 }
 165                 // Comment
 166                 if( self::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 167                         $comment = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 168                 } else {
 169                         $comment = $wgContLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 170                 }
 171                 // Extract extra parameters
 172                 $paramArray = LogPage::extractParams( $row->log_params );
 173                 $revert = $del = '';
 174                 // Some user can hide log items and have review links
 175                 if( $wgUser->isAllowed( 'deleterevision' ) ) {
 176                         $del = $this->showhideLinks( $row ) . ' ';
 177                 }
 178                 // Add review links and such...
 179                 if( !($this->flags & self::NO_ACTION_LINK) && !($row->log_deleted & LogPage::DELETED_ACTION) ) {
 180                         if( $row->log_type == 'move' && isset( $paramArray[0] ) && $wgUser->isAllowed( 'move' ) ) {
 181                                 $destTitle = Title::newFromText( $paramArray[0] );
 182                                 if( $destTitle ) {
 183                                         $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
 184                                                 $this->message['revertmove'],
 185                                                 'wpOldTitle=' . urlencode( $destTitle->getPrefixedDBkey() ) .
 186                                                 '&wpNewTitle=' . urlencode( $title->getPrefixedDBkey() ) .
 187                                                 '&wpReason=' . urlencode( wfMsgForContent( 'revertmove' ) ) .
 188                                                 '&wpMovetalk=0' ) . ')';
 189                                 }
 190                         // Show undelete link
 191                         } else if( $row->log_action == 'delete' && $wgUser->isAllowed( 'delete' ) ) {
 192                                 $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete' ),
 193                                         $this->message['undeletelink'], 'target='. urlencode( $title->getPrefixedDBkey() ) ) . ')';
 194                         // Show unblock link
 195                         } else if( $row->log_action == 'block' && $wgUser->isAllowed( 'block' ) ) {
 196                                 $revert = '(' .  $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Ipblocklist' ),
 197                                         $this->message['unblocklink'],
 198                                         'action=unblock&ip=' . urlencode( $row->log_title ) ) . ')';
 199                         // Show change protection link
 200                         } else if( ( $row->log_action == 'protect' || $row->log_action == 'modify' ) && $wgUser->isAllowed( 'protect' ) ) {
 201                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $title, $this->message['protect_change'], 'action=unprotect' ) . ')';
 202                         // Show unmerge link
 203                         } else if ( $row->log_action == 'merge' ) {
 204                                 $merge = SpecialPage::getTitleFor( 'Mergehistory' );
 205                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $merge, $this->message['revertmerge'],
 206                                         wfArrayToCGI(
 207                                                 array('target' => $paramArray[0], 'dest' => $title->getPrefixedText(), 'mergepoint' => $paramArray[1] )
 208                                         )
 209                                 ) . ')';
 210                         // If an edit was hidden from a page give a review link to the history
 211                         } else if( $row->log_action == 'revision' && $wgUser->isAllowed( 'deleterevision' ) && isset($paramArray[2]) ) {
 212                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 213                                 // Different revision types use different URL params...
 214                                 $subtype = isset($paramArray[2]) ? $paramArray[1] : '';
 215                                 // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 216                                 $Ids = explode( ',', $paramArray[2] );
 217                                 if( count($Ids) == 1 ) {
 218                                         $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 219                                                 wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $Ids[0] ) ) );
 220                                 } else {
 221                                         $revert .= $this->message['revdel-restore'].':';
 222                                         foreach( $Ids as $n => $id ) {
 223                                                 $revert .= ' '.$this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
 224                                                         wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $id ) ) );
 225                                         }
 226                                 }
 227                                 $revert = "($revert)";
 228                         // Hidden log items, give review link
 229                         } else if( $row->log_action == 'event' && $wgUser->isAllowed( 'deleterevision' ) && isset($paramArray[0]) ) {
 230                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 231                                 $revert .= $this->message['revdel-restore'];
 232                                 $Ids = explode( ',', $paramArray[0] );
 233                                 // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 234                                 if( count($Ids) == 1 ) {
 235                                         $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 236                                                 wfArrayToCGI( array('logid' => $Ids[0] ) ) );
 237                                 } else {
 238                                         foreach( $Ids as $n => $id ) {
 239                                                 $revert .= $this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
 240                                                         wfArrayToCGI( array('logid' => $id ) ) );
 241                                         }
 242                                 }
 243                                 $revert = "($revert)";
 244                         } else {
 245                                 wfRunHooks( 'LogLine', array( $row->log_type, $row->log_action, $title, $paramArray,
 246                                         &$comment, &$revert, $row->log_timestamp ) );
 247                                 // wfDebug( "Invoked LogLine hook for " $row->log_type . ", " . $row->log_action . "\n" );
 248                                 // Do nothing. The implementation is handled by the hook modifiying the passed-by-ref parameters.
 249                         }
 250                 }
 251                 // Event description
 252                 if( self::isDeleted($row,LogPage::DELETED_ACTION) ) {
 253                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 254                 } else {
 255                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title, $this->skin, $paramArray, true );
 256                 }
 257
 258                 return "<li>$del$time $userLink $action $comment $revert</li>\n";
 259         }
 260
 261         /**
 262          * @param Row $row
 263          * @private
 264          */
 265         private function showhideLinks( $row ) {
 266                 global $wgAllowLogDeletion;
 267
 268                 if( !$wgAllowLogDeletion )
 269                         return "";
 270
 271                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 272                 // If event was hidden from sysops
 273                 if( !self::userCan( $row, LogPage::DELETED_RESTRICTED ) ) {
 274                         $del = $this->message['rev-delundel'];
 275                 } else if( $row->log_type == 'suppress' ) {
 276                         // No one should be hiding from the oversight log
 277                         $del = $this->message['rev-delundel'];
 278                 } else {
 279                         $del = $this->skin->makeKnownLinkObj( $revdel, $this->message['rev-delundel'], 'logid='.$row->log_id );
 280                         // Bolden oversighted content
 281                         if( self::isDeleted( $row, LogPage::DELETED_RESTRICTED ) )
 282                                 $del = "<strong>$del</strong>";
 283                 }
 284                 return "<tt>(<small>$del</small>)</tt>";
 285         }
 286
 287         /**
 288          * Determine if the current user is allowed to view a particular
 289          * field of this log row, if it's marked as deleted.
 290          * @param Row $row
 291          * @param int $field
 292          * @return bool
 293          */
 294         public static function userCan( $row, $field ) {
 295                 if( ( $row->log_deleted & $field ) == $field ) {
 296                         global $wgUser;
 297                         $permission = ( $row->log_deleted & LogPage::DELETED_RESTRICTED ) == LogPage::DELETED_RESTRICTED
 298                                 ? 'hiderevision'
 299                                 : 'deleterevision';
 300                         wfDebug( "Checking for $permission due to $field match on $row->log_deleted\n" );
 301                         return $wgUser->isAllowed( $permission );
 302                 } else {
 303                         return true;
 304                 }
 305         }
 306
 307         /**
 308          * @param Row $row
 309          * @param int $field one of DELETED_* bitfield constants
 310          * @return bool
 311          */
 312         public static function isDeleted( $row, $field ) {
 313                 return ($row->log_deleted & $field) == $field;
 314         }
 315
 316         /**
 317          * Quick function to show a short log extract
 318          * @param OutputPage $out
 319          * @param string $type
 320          * @param string $page
 321          * @param string $user
 322          */
 323          public static function showLogExtract( $out, $type='', $page='', $user='' ) {
 324                 global $wgUser;
 325                 # Insert list of top 50 or so items
 326                 $loglist = new LogEventsList( $wgUser->getSkin() );
 327                 $pager = new LogPager( $loglist, $type, $user, $page, '' );
 328                 $logBody = $pager->getBody();
 329                 if( $logBody ) {
 330                         $out->addHTML(
 331                                 $loglist->beginLogEventsList() .
 332                                 $logBody .
 333                                 $loglist->endLogEventsList()
 334                         );
 335                 } else {
 336                         $out->addWikiMsg( 'logempty' );
 337                 }
 338          }
 339
 340          /**
 341          * SQL clause to skip forbidden log types for this user
 342          * @param Database $db
 343          * @returns mixed (string or false)
 344          */
 345         public static function getExcludeClause( $db ) {
 346                 global $wgLogRestrictions, $wgUser;
 347                 // Reset the array, clears extra "where" clauses when $par is used
 348                 $hiddenLogs = array();
 349                 // Don't show private logs to unprivileged users
 350                 foreach( $wgLogRestrictions as $logtype => $right ) {
 351                         if( !$wgUser->isAllowed($right) ) {
 352                                 $safetype = $db->strencode( $logtype );
 353                                 $hiddenLogs[] = $safetype;
 354                         }
 355                 }
 356                 if( count($hiddenLogs) == 1 ) {
 357                         return 'log_type != ' . $db->addQuotes( $hiddenLogs[0] );
 358                 } elseif( !empty( $hiddenLogs ) ) {
 359                         return 'log_type NOT IN (' . $db->makeList($hiddenLogs) . ')';
 360                 }
 361                 return false;
 362         }
 363 }
 364
 365 /**
 366  * @addtogroup Pager
 367  */
 368 class LogPager extends ReverseChronologicalPager {
 369         private $type = '', $user = '', $title = '', $pattern = '';
 370         public $mLogEventsList;
 371         /**
 372         * constructor
 373         * @param LogEventsList $loglist,
 374         * @param string $type,
 375         * @param string $user,
 376         * @param string $page,
 377         * @param string $pattern
 378         * @param array $conds
 379         */
 380         function __construct( $loglist, $type='', $user='', $title='', $pattern='', $conds = array() ) {
 381                 parent::__construct();
 382                 $this->mConds = $conds;
 383
 384                 $this->mLogEventsList = $loglist;
 385
 386                 $this->limitType( $type );
 387                 $this->limitUser( $user );
 388                 $this->limitTitle( $title, $pattern );
 389         }
 390
 391         function getDefaultQuery() {
 392                 $query = parent::getDefaultQuery();
 393                 $query['type'] = $this->type;
 394                 return $query;
 395         }
 396
 397         /**
 398          * Set the log reader to return only entries of the given type.
 399          * Type restrictions enforced here
 400          * @param string $type A log type ('upload', 'delete', etc)
 401          * @private
 402          */
 403         private function limitType( $type ) {
 404                 global $wgLogRestrictions, $wgUser;
 405                 // Don't even show header for private logs; don't recognize it...
 406                 if( isset($wgLogRestrictions[$type]) && !$wgUser->isAllowed($wgLogRestrictions[$type]) ) {
 407                         $type = '';
 408                 }
 409                 // Don't show private logs to unpriviledged users
 410                 $hideLogs = LogEventsList::getExcludeClause( $this->mDb );
 411                 if( $hideLogs !== false ) {
 412                         $this->mConds[] = $hideLogs;
 413                 }
 414                 if( empty($type) ) {
 415                         return false;
 416                 }
 417                 $this->type = $type;
 418                 $this->mConds['log_type'] = $type;
 419         }
 420
 421         /**
 422          * Set the log reader to return only entries by the given user.
 423          * @param string $name (In)valid user name
 424          * @private
 425          */
 426         function limitUser( $name ) {
 427                 if( $name == '' ) {
 428                         return false;
 429                 }
 430                 $usertitle = Title::makeTitleSafe( NS_USER, $name );
 431                 if( is_null($usertitle) ) {
 432                         return false;
 433                 }
 434                 $this->user = $usertitle->getText();
 435                 /* Fetch userid at first, if known, provides awesome query plan afterwards */
 436                 $userid = User::idFromName( $this->user );
 437                 if( !$userid ) {
 438                         /* It should be nicer to abort query at all,
 439                            but for now it won't pass anywhere behind the optimizer */
 440                         $this->mConds[] = "NULL";
 441                 } else {
 442                         $this->mConds['log_user'] = $userid;
 443                 }
 444         }
 445
 446         /**
 447          * Set the log reader to return only entries affecting the given page.
 448          * (For the block and rights logs, this is a user page.)
 449          * @param string $page Title name as text
 450          * @private
 451          */
 452         function limitTitle( $page, $pattern ) {
 453                 global $wgMiserMode;
 454
 455                 $title = Title::newFromText( $page );
 456                 if( strlen($page) == 0 || !$title instanceof Title )
 457                         return false;
 458
 459                 $this->title = $title->getPrefixedText();
 460                 $ns = $title->getNamespace();
 461                 if( $pattern && !$wgMiserMode ) {
 462                         # use escapeLike to avoid expensive search patterns like 't%st%'
 463                         $safetitle = $this->mDb->escapeLike( $title->getDBkey() );
 464                         $this->mConds['log_namespace'] = $ns;
 465                         $this->mConds[] = "log_title LIKE '$safetitle%'";
 466                         $this->pattern = $pattern;
 467                 } else {
 468                         $this->mConds['log_namespace'] = $ns;
 469                         $this->mConds['log_title'] = $title->getDBkey();
 470                 }
 471         }
 472
 473         function getQueryInfo() {
 474                 $this->mConds[] = 'user_id = log_user';
 475                 # Hack this until live
 476                 global $wgAllowLogDeletion;
 477                 $log_id = $wgAllowLogDeletion ? 'log_id' : '0 AS log_id';
 478                 # Don't use the wrong logging index
 479                 if( $this->title || $this->pattern || $this->user ) {
 480                         $index = array( 'USE INDEX' => array( 'logging' => array('page_time','user_time') ) );
 481                 } else if( $this->type ) {
 482                         $index = array( 'USE INDEX' => array( 'logging' => 'type_time' ) );
 483                 } else {
 484                         $index = array( 'USE INDEX' => array( 'logging' => 'times' ) );
 485                 }
 486                 return array(
 487                         'tables' => array( 'logging', 'user' ),
 488                         'fields' => array( 'log_type', 'log_action', 'log_user', 'log_namespace', 'log_title',
 489                                 'log_params', 'log_comment', $log_id, 'log_deleted', 'log_timestamp', 'user_name' ),
 490                         'conds' => $this->mConds,
 491                         'options' => $index
 492                 );
 493         }
 494
 495         function getIndexField() {
 496                 return 'log_timestamp';
 497         }
 498
 499         function getStartBody() {
 500                 wfProfileIn( __METHOD__ );
 501                 # Do a link batch query
 502                 $lb = new LinkBatch;
 503                 while( $row = $this->mResult->fetchObject() ) {
 504                         $lb->add( $row->log_namespace, $row->log_title );
 505                         $lb->addObj( Title::makeTitleSafe( NS_USER, $row->user_name ) );
 506                         $lb->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->user_name ) );
 507                 }
 508                 $lb->execute();
 509                 $this->mResult->seek( 0 );
 510                 wfProfileOut( __METHOD__ );
 511                 return '';
 512         }
 513
 514         function formatRow( $row ) {
 515                 return $this->mLogEventsList->logLine( $row );
 516         }
 517
 518         public function getType() {
 519                 return $this->type;
 520         }
 521
 522         public function getUser() {
 523                 return $this->user;
 524         }
 525
 526         public function getPage() {
 527                 return $this->title;
 528         }
 529
 530         public function getPattern() {
 531                 return $this->pattern;
 532         }
 533 }
 534
 535 /**
 536  *
 537  * @addtogroup SpecialPage
 538  */
 539 class LogReader {
 540         var $pager;
 541         /**
 542          * @param WebRequest $request For internal use use a FauxRequest object to pass arbitrary parameters.
 543          */
 544         function __construct( $request ) {
 545                 global $wgUser;
 546                 # Get parameters
 547                 $type = $request->getVal( 'type' );
 548                 $user = $request->getText( 'user' );
 549                 $title = $request->getText( 'page' );
 550                 $pattern = $request->getBool( 'pattern' );
 551
 552                 $loglist = new LogEventsList( $wgUser->getSkin() );
 553                 $this->pager = new LogPager( $loglist, $type, $user, $title, $pattern );
 554         }
 555
 556         /**
 557         * Is there at least one row?
 558         * @return bool
 559         */
 560         public function hasRows() {
 561                 return isset($this->pager) ? ($this->pager->getNumRows() > 0) : false;
 562         }
 563 }
 564
 565 /**
 566  *
 567  * @addtogroup SpecialPage
 568  */
 569 class LogViewer {
 570         const NO_ACTION_LINK = 1;
 571         /**
 572          * @var LogReader $reader
 573          */
 574         var $reader;
 575         /**
 576          * @param LogReader &$reader where to get our data from
 577          * @param integer $flags Bitwise combination of flags:
 578          *     LogEventsList::NO_ACTION_LINK   Don't show restore/unblock/block links
 579          */
 580         function __construct( &$reader, $flags = 0 ) {
 581                 global $wgUser;
 582                 $this->reader =& $reader;
 583                 $this->reader->pager->mLogEventsList->flags = $flags;
 584                 # Aliases for shorter code...
 585                 $this->pager =& $this->reader->pager;
 586                 $this->logEventsList =& $this->reader->pager->mLogEventsList;
 587         }
 588
 589         /**
 590          * Take over the whole output page in $wgOut with the log display.
 591          */
 592         public function show() {
 593                 global $wgOut;
 594                 # Set title and add header
 595                 $this->logEventsList->showHeader( $wgOut, $pager->getType() );
 596                 # Show form options
 597                 $this->logEventsList->showOptions( $wgOut, $this->pager->getType(), $this->pager->getUser(),
 598                         $this->pager->getPage(), $this->pager->getPattern() );
 599                 # Insert list
 600                 $logBody = $this->pager->getBody();
 601                 if( $logBody ) {
 602                         $wgOut->addHTML(
 603                                 $this->pager->getNavigationBar() .
 604                                 $this->logEventsList->beginLogEventsList() .
 605                                 $logBody .
 606                                 $this->logEventsList->endLogEventsList() .
 607                                 $this->pager->getNavigationBar()
 608                         );
 609                 } else {
 610                         $wgOut->addWikiMsg( 'logempty' );
 611                 }
 612         }
 613
 614         /**
 615          * Output just the list of entries given by the linked LogReader,
 616          * with extraneous UI elements. Use for displaying log fragments in
 617          * another page (eg at Special:Undelete)
 618          * @param OutputPage $out where to send output
 619          */
 620         public function showList( &$out ) {
 621                 $logBody = $this->pager->getBody();
 622                 if( $logBody ) {
 623                         $out->addHTML(
 624                                 $this->logEventsList->beginLogEventsList() .
 625                                 $logBody .
 626                                 $this->logEventsList->endLogEventsList()
 627                         );
 628                 } else {
 629                         $out->addWikiMsg( 'logempty' );
 630                 }
 631         }
 632 }
 633