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
 141         protected function getWrapperElement() {
 142                 global $wgDateGroupedLogs;
 143                 return $wgDateGroupedLogs ? 'div' : 'ul';
 144         }
 145
 146         public function beginLogEventsList() {
 147                 return Xml::openElement( $this->getWrapperElement() ) . "\n";
 148         }
 149
 150         public function endLogEventsList() {
 151                 return Xml::closeElement( $this->getWrapperElement() ) . "\n";
 152         }
 153
 154                 /**
 155          * @param Row $row a single row from the result set
 156          * @return string Formatted HTML list item
 157          * @private
 158          */
 159         public function logLine( $row ) {
 160                 global $wgLang, $wgUser, $wgContLang;
 161                 $skin = $wgUser->getSkin();
 162                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 163                 $time = $wgLang->timeanddate( wfTimestamp(TS_MW, $row->log_timestamp), true );
 164                 // Enter the existence or non-existence of this page into the link cache,
 165                 // for faster makeLinkObj() in LogPage::actionText()
 166                 $linkCache =& LinkCache::singleton();
 167                 $linkCache->addLinkObj( $title );
 168                 // User links
 169                 if( self::isDeleted($row,LogPage::DELETED_USER) ) {
 170                         $userLink = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 171                 } else {
 172                         $userLink = $this->skin->userLink( $row->log_user, $row->user_name ) .
 173                                 $this->skin->userToolLinksRedContribs( $row->log_user, $row->user_name );
 174                 }
 175                 // Comment
 176                 if( self::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 177                         $comment = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 178                 } else {
 179                         $comment = $wgContLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 180                 }
 181                 // Extract extra parameters
 182                 $paramArray = LogPage::extractParams( $row->log_params );
 183                 $revert = $del = '';
 184                 // Some user can hide log items and have review links
 185                 if( $wgUser->isAllowed( 'deleterevision' ) ) {
 186                         $del = $this->showhideLinks( $row ) . ' ';
 187                 }
 188                 // Add review links and such...
 189                 if( !($this->flags & self::NO_ACTION_LINK) && !($row->log_deleted & LogPage::DELETED_ACTION) ) {
 190                         if( $row->log_type == 'move' && isset( $paramArray[0] ) && $wgUser->isAllowed( 'move' ) ) {
 191                                 $destTitle = Title::newFromText( $paramArray[0] );
 192                                 if( $destTitle ) {
 193                                         $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
 194                                                 $this->message['revertmove'],
 195                                                 'wpOldTitle=' . urlencode( $destTitle->getPrefixedDBkey() ) .
 196                                                 '&wpNewTitle=' . urlencode( $title->getPrefixedDBkey() ) .
 197                                                 '&wpReason=' . urlencode( wfMsgForContent( 'revertmove' ) ) .
 198                                                 '&wpMovetalk=0' ) . ')';
 199                                 }
 200                         // Show undelete link
 201                         } else if( $row->log_action == 'delete' && $wgUser->isAllowed( 'delete' ) ) {
 202                                 $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete' ),
 203                                         $this->message['undeletelink'], 'target='. urlencode( $title->getPrefixedDBkey() ) ) . ')';
 204                         // Show unblock link
 205                         } else if( $row->log_action == 'block' && $wgUser->isAllowed( 'block' ) ) {
 206                                 $revert = '(' .  $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Ipblocklist' ),
 207                                         $this->message['unblocklink'],
 208                                         'action=unblock&ip=' . urlencode( $row->log_title ) ) . ')';
 209                         // Show change protection link
 210                         } else if( ( $row->log_action == 'protect' || $row->log_action == 'modify' ) && $wgUser->isAllowed( 'protect' ) ) {
 211                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $title, $this->message['protect_change'], 'action=unprotect' ) . ')';
 212                         // Show unmerge link
 213                         } else if ( $row->log_action == 'merge' ) {
 214                                 $merge = SpecialPage::getTitleFor( 'Mergehistory' );
 215                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $merge, $this->message['revertmerge'],
 216                                         wfArrayToCGI(
 217                                                 array('target' => $paramArray[0], 'dest' => $title->getPrefixedText(), 'mergepoint' => $paramArray[1] )
 218                                         )
 219                                 ) . ')';
 220                         // If an edit was hidden from a page give a review link to the history
 221                         } else if( $row->log_action == 'revision' && $wgUser->isAllowed( 'deleterevision' ) && isset($paramArray[2]) ) {
 222                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 223                                 // Different revision types use different URL params...
 224                                 $subtype = isset($paramArray[2]) ? $paramArray[1] : '';
 225                                 // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 226                                 $Ids = explode( ',', $paramArray[2] );
 227                                 if( count($Ids) == 1 ) {
 228                                         $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 229                                                 wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $Ids[0] ) ) );
 230                                 } else {
 231                                         $revert .= $this->message['revdel-restore'].':';
 232                                         foreach( $Ids as $n => $id ) {
 233                                                 $revert .= ' '.$this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
 234                                                         wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $id ) ) );
 235                                         }
 236                                 }
 237                                 $revert = "($revert)";
 238                         // Hidden log items, give review link
 239                         } else if( $row->log_action == 'event' && $wgUser->isAllowed( 'deleterevision' ) && isset($paramArray[0]) ) {
 240                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 241                                 $revert .= $this->message['revdel-restore'];
 242                                 $Ids = explode( ',', $paramArray[0] );
 243                                 // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 244                                 if( count($Ids) == 1 ) {
 245                                         $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 246                                                 wfArrayToCGI( array('logid' => $Ids[0] ) ) );
 247                                 } else {
 248                                         foreach( $Ids as $n => $id ) {
 249                                                 $revert .= $this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
 250                                                         wfArrayToCGI( array('logid' => $id ) ) );
 251                                         }
 252                                 }
 253                                 $revert = "($revert)";
 254                         } else {
 255                                 wfRunHooks( 'LogLine', array( $row->log_type, $row->log_action, $title, $paramArray,
 256                                         &$comment, &$revert, $row->log_timestamp ) );
 257                                 // wfDebug( "Invoked LogLine hook for " $row->log_type . ", " . $row->log_action . "\n" );
 258                                 // Do nothing. The implementation is handled by the hook modifiying the passed-by-ref parameters.
 259                         }
 260                 }
 261                 // Event description
 262                 if( self::isDeleted($row,LogPage::DELETED_ACTION) ) {
 263                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 264                 } else {
 265                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title, $this->skin, $paramArray, true );
 266                 }
 267
 268                 global $wgDateGroupedLogs;
 269                 if ( $wgDateGroupedLogs ) {
 270                         $time = $wgLang->time( wfTimestamp(TS_MW, $row->log_timestamp), true );
 271                         $date = $wgLang->date( wfTimestamp(TS_MW, $row->log_timestamp), true );
 272                         $line = Xml::tags('div', array( 'class' => 'mw-log-entry' ), "$del$time $userLink $action $comment $revert" );
 273
 274                         static $lastdate = false;
 275                         if ( $date !== $lastdate ) {
 276                                 $lastdate = $date;
 277                                 return Xml::element('h4', null, $date) . "\n" . $line;
 278                         } else {
 279                                 return $line;
 280                         }
 281                 } else {
 282                         return Xml::tags('li', null, "$del$time $userLink $action $comment $revert" );
 283                 }
 284
 285         }
 286
 287         /**
 288          * @param Row $row
 289          * @private
 290          */
 291         private function showhideLinks( $row ) {
 292                 global $wgAllowLogDeletion;
 293
 294                 if( !$wgAllowLogDeletion )
 295                         return "";
 296
 297                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 298                 // If event was hidden from sysops
 299                 if( !self::userCan( $row, LogPage::DELETED_RESTRICTED ) ) {
 300                         $del = $this->message['rev-delundel'];
 301                 } else if( $row->log_type == 'suppress' ) {
 302                         // No one should be hiding from the oversight log
 303                         $del = $this->message['rev-delundel'];
 304                 } else {
 305                         $del = $this->skin->makeKnownLinkObj( $revdel, $this->message['rev-delundel'], 'logid='.$row->log_id );
 306                         // Bolden oversighted content
 307                         if( self::isDeleted( $row, LogPage::DELETED_RESTRICTED ) )
 308                                 $del = "<strong>$del</strong>";
 309                 }
 310                 return "<tt>(<small>$del</small>)</tt>";
 311         }
 312
 313         /**
 314          * Determine if the current user is allowed to view a particular
 315          * field of this log row, if it's marked as deleted.
 316          * @param Row $row
 317          * @param int $field
 318          * @return bool
 319          */
 320         public static function userCan( $row, $field ) {
 321                 if( ( $row->log_deleted & $field ) == $field ) {
 322                         global $wgUser;
 323                         $permission = ( $row->log_deleted & LogPage::DELETED_RESTRICTED ) == LogPage::DELETED_RESTRICTED
 324                                 ? 'hiderevision'
 325                                 : 'deleterevision';
 326                         wfDebug( "Checking for $permission due to $field match on $row->log_deleted\n" );
 327                         return $wgUser->isAllowed( $permission );
 328                 } else {
 329                         return true;
 330                 }
 331         }
 332
 333         /**
 334          * @param Row $row
 335          * @param int $field one of DELETED_* bitfield constants
 336          * @return bool
 337          */
 338         public static function isDeleted( $row, $field ) {
 339                 return ($row->log_deleted & $field) == $field;
 340         }
 341
 342         /**
 343          * Quick function to show a short log extract
 344          * @param OutputPage $out
 345          * @param string $type
 346          * @param string $page
 347          * @param string $user
 348          */
 349          public static function showLogExtract( $out, $type='', $page='', $user='' ) {
 350                 global $wgUser;
 351                 # Insert list of top 50 or so items
 352                 $loglist = new LogEventsList( $wgUser->getSkin() );
 353                 $pager = new LogPager( $loglist, $type, $user, $page, '' );
 354                 $logBody = $pager->getBody();
 355                 if( $logBody ) {
 356                         $out->addHTML(
 357                                 $loglist->beginLogEventsList() .
 358                                 $logBody .
 359                                 $loglist->endLogEventsList()
 360                         );
 361                 } else {
 362                         $out->addWikiMsg( 'logempty' );
 363                 }
 364          }
 365
 366          /**
 367          * SQL clause to skip forbidden log types for this user
 368          * @param Database $db
 369          * @returns mixed (string or false)
 370          */
 371         public static function getExcludeClause( $db ) {
 372                 global $wgLogRestrictions, $wgUser;
 373                 // Reset the array, clears extra "where" clauses when $par is used
 374                 $hiddenLogs = array();
 375                 // Don't show private logs to unpriviledged users
 376                 foreach( $wgLogRestrictions as $logtype => $right ) {
 377                         if( !$wgUser->isAllowed($right) ) {
 378                                 $safetype = $db->strencode( $logtype );
 379                                 $hiddenLogs[] = "'$safetype'";
 380                         }
 381                 }
 382                 if( !empty($hiddenLogs) ) {
 383                         return 'log_type NOT IN(' . implode(',',$hiddenLogs) . ')';
 384                 }
 385                 return false;
 386         }
 387 }
 388
 389 /**
 390  * @addtogroup Pager
 391  */
 392 class LogPager extends ReverseChronologicalPager {
 393         private $type = '', $user = '', $title = '', $pattern = '';
 394         public $mLogEventsList;
 395         /**
 396         * constructor
 397         * @param LogEventsList $loglist,
 398         * @param string $type,
 399         * @param string $user,
 400         * @param string $page,
 401         * @param string $pattern
 402         * @param array $conds
 403         */
 404         function __construct( $loglist, $type='', $user='', $title='', $pattern='', $conds = array() ) {
 405                 parent::__construct();
 406                 $this->mConds = $conds;
 407
 408                 $this->mLogEventsList = $loglist;
 409
 410                 $this->limitType( $type );
 411                 $this->limitUser( $user );
 412                 $this->limitTitle( $title, $pattern );
 413         }
 414
 415         /**
 416          * Set the log reader to return only entries of the given type.
 417          * Type restrictions enforced here
 418          * @param string $type A log type ('upload', 'delete', etc)
 419          * @private
 420          */
 421         private function limitType( $type ) {
 422                 global $wgLogRestrictions, $wgUser;
 423                 // Don't even show header for private logs; don't recognize it...
 424                 if( isset($wgLogRestrictions[$type]) && !$wgUser->isAllowed($wgLogRestrictions[$type]) ) {
 425                         $type = '';
 426                 }
 427                 // Don't show private logs to unpriviledged users
 428                 $hideLogs = LogEventsList::getExcludeClause( $this->mDb );
 429                 if( $hideLogs !== false ) {
 430                         $this->mConds[] = $hideLogs;
 431                 }
 432                 if( empty($type) ) {
 433                         return false;
 434                 }
 435                 $this->type = $type;
 436                 $this->mConds['log_type'] = $type;
 437         }
 438
 439         /**
 440          * Set the log reader to return only entries by the given user.
 441          * @param string $name (In)valid user name
 442          * @private
 443          */
 444         function limitUser( $name ) {
 445                 if( $name == '' ) {
 446                         return false;
 447                 }
 448                 $usertitle = Title::makeTitleSafe( NS_USER, $name );
 449                 if( is_null($usertitle) ) {
 450                         return false;
 451                 }
 452                 $this->user = $usertitle->getText();
 453                 /* Fetch userid at first, if known, provides awesome query plan afterwards */
 454                 $userid = User::idFromName( $this->user );
 455                 if( !$userid ) {
 456                         /* It should be nicer to abort query at all,
 457                            but for now it won't pass anywhere behind the optimizer */
 458                         $this->mConds[] = "NULL";
 459                 } else {
 460                         $this->mConds['log_user'] = $userid;
 461                 }
 462         }
 463
 464         /**
 465          * Set the log reader to return only entries affecting the given page.
 466          * (For the block and rights logs, this is a user page.)
 467          * @param string $page Title name as text
 468          * @private
 469          */
 470         function limitTitle( $page, $pattern ) {
 471                 global $wgMiserMode;
 472
 473                 $title = Title::newFromText( $page );
 474                 if( strlen($page) == 0 || !$title instanceof Title )
 475                         return false;
 476
 477                 $this->title = $title->getPrefixedText();
 478                 $this->pattern = $pattern;
 479                 $ns = $title->getNamespace();
 480                 if( $pattern && !$wgMiserMode ) {
 481                         # use escapeLike to avoid expensive search patterns like 't%st%'
 482                         $safetitle = $this->mDb->escapeLike( $title->getDBkey() );
 483                         $this->mConds['log_namespace'] = $ns;
 484                         $this->mConds[] = "log_title LIKE '$safetitle%'";
 485                 } else {
 486                         $this->mConds['log_namespace'] = $ns;
 487                         $this->mConds['log_title'] = $title->getDBkey();
 488                 }
 489         }
 490
 491         function getQueryInfo() {
 492                 $this->mConds[] = 'user_id = log_user';
 493                 # Hack this until live
 494                 global $wgAllowLogDeletion;
 495                 $log_id = $wgAllowLogDeletion ? 'log_id' : '0 AS log_id';
 496                 # Don't use the wrong logging index
 497                 if( $this->user ) {
 498                         $index = array( 'USE INDEX' => array( 'logging' => 'user_time' ) );
 499                 } else if( $this->title || $this->pattern ) {
 500                         $index = array( 'USE INDEX' => array( 'logging' => 'page_time' ) );
 501                 } else if( $this->type ) {
 502                         $index = array( 'USE INDEX' => array( 'logging' => 'type_time' ) );
 503                 } else {
 504                         $index = array( 'USE INDEX' => array( 'logging' => 'times' ) );
 505                 }
 506                 return array(
 507                         'tables' => array( 'logging', 'user' ),
 508                         'fields' => array( 'log_type', 'log_action', 'log_user', 'log_namespace', 'log_title',
 509                                 'log_params', 'log_comment', $log_id, 'log_deleted', 'log_timestamp', 'user_name' ),
 510                         'conds' => $this->mConds,
 511                         'options' => $index
 512                 );
 513         }
 514
 515         function getIndexField() {
 516                 return 'log_timestamp';
 517         }
 518
 519         function formatRow( $row ) {
 520                 return $this->mLogEventsList->logLine( $row );
 521         }
 522
 523         public function getType() {
 524                 return $this->type;
 525         }
 526
 527         public function getUser() {
 528                 return $this->user;
 529         }
 530
 531         public function getPage() {
 532                 return $this->title;
 533         }
 534
 535         public function getPattern() {
 536                 return $this->pattern;
 537         }
 538 }
 539
 540 /**
 541  *
 542  * @addtogroup SpecialPage
 543  */
 544 class LogReader {
 545         var $pager;
 546         /**
 547          * @param WebRequest $request For internal use use a FauxRequest object to pass arbitrary parameters.
 548          */
 549         function __construct( $request ) {
 550                 global $wgUser;
 551                 # Get parameters
 552                 $type = $request->getVal( 'type' );
 553                 $user = $request->getText( 'user' );
 554                 $title = $request->getText( 'page' );
 555                 $pattern = $request->getBool( 'pattern' );
 556
 557                 $loglist = new LogEventsList( $wgUser->getSkin() );
 558                 $this->pager = new LogPager( $loglist, $type, $user, $title, $pattern );
 559         }
 560
 561         /**
 562         * Is there at least one row?
 563         * @return bool
 564         */
 565         public function hasRows() {
 566                 return isset($this->pager) ? ($this->pager->getNumRows() > 0) : false;
 567         }
 568 }
 569
 570 /**
 571  *
 572  * @addtogroup SpecialPage
 573  */
 574 class LogViewer {
 575         const NO_ACTION_LINK = 1;
 576         /**
 577          * @var LogReader $reader
 578          */
 579         var $reader;
 580         /**
 581          * @param LogReader &$reader where to get our data from
 582          * @param integer $flags Bitwise combination of flags:
 583          *     LogEventsList::NO_ACTION_LINK   Don't show restore/unblock/block links
 584          */
 585         function __construct( &$reader, $flags = 0 ) {
 586                 global $wgUser;
 587                 $this->reader =& $reader;
 588                 $this->reader->pager->mLogEventsList->flags = $flags;
 589                 # Aliases for shorter code...
 590                 $this->pager =& $this->reader->pager;
 591                 $this->logEventsList =& $this->reader->pager->mLogEventsList;
 592         }
 593
 594         /**
 595          * Take over the whole output page in $wgOut with the log display.
 596          */
 597         public function show() {
 598                 global $wgOut;
 599                 # Set title and add header
 600                 $this->logEventsList->showHeader( $wgOut, $pager->getType() );
 601                 # Show form options
 602                 $this->logEventsList->showOptions( $wgOut, $this->pager->getType(), $this->pager->getUser(),
 603                         $this->pager->getPage(), $this->pager->getPattern() );
 604                 # Insert list
 605                 $logBody = $this->pager->getBody();
 606                 if( $logBody ) {
 607                         $wgOut->addHTML(
 608                                 $this->pager->getNavigationBar() .
 609                                 $this->logEventsList->beginLogEventsList() .
 610                                 $logBody .
 611                                 $this->logEventsList->endLogEventsList() .
 612                                 $this->pager->getNavigationBar()
 613                         );
 614                 } else {
 615                         $wgOut->addWikiMsg( 'logempty' );
 616                 }
 617         }
 618
 619         /**
 620          * Output just the list of entries given by the linked LogReader,
 621          * with extraneous UI elements. Use for displaying log fragments in
 622          * another page (eg at Special:Undelete)
 623          * @param OutputPage $out where to send output
 624          */
 625         public function showList( &$out ) {
 626                 $logBody = $this->pager->getBody();
 627                 if( $logBody ) {
 628                         $out->addHTML(
 629                                 $this->logEventsList->beginLogEventsList() .
 630                                 $logBody .
 631                                 $this->logEventsList->endLogEventsList()
 632                         );
 633                 } else {
 634                         $out->addWikiMsg( 'logempty' );
 635                 }
 636         }
 637 }
 638