Fixed a E_DEPRECATED
[lhc/web/wiklou.git] / includes / LogEventsList.php
index 1617fa4..4bfdc2a 100644 (file)
@@ -39,7 +39,7 @@ class LogEventsList {
                // Precache various messages
                if( !isset( $this->message ) ) {
                        $messages = array( 'revertmerge', 'protect_change', 'unblocklink', 'change-blocklink',
-                               'revertmove', 'undeletelink', 'revdel-restore', 'rev-delundel', 'hist', 'diff',
+                               'revertmove', 'undeletelink', 'undeleteviewlink', 'revdel-restore', 'hist', 'diff',
                                'pipe-separator' );
                        foreach( $messages as $msg ) {
                                $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
@@ -49,12 +49,16 @@ class LogEventsList {
 
        /**
         * Set page title and show header for this log type
-        * @param $type String
+        * @param $type Array
         */
        public function showHeader( $type ) {
-               if( LogPage::isLogType( $type ) ) {
-                       $this->out->setPageTitle( LogPage::logName( $type ) );
-                       $this->out->addHTML( LogPage::logHeader( $type ) );
+               // If only one log type is used, then show a special message...
+               $headerType = (count($type) == 1) ? $type[0] : '';
+               if( LogPage::isLogType( $headerType ) ) {
+                       $this->out->setPageTitle( LogPage::logName( $headerType ) );
+                       $this->out->addHTML( LogPage::logHeader( $headerType ) );
+               } else {
+                       $this->out->addHTML( wfMsgExt('alllogstext',array('parseinline')) );
                }
        }
 
@@ -73,29 +77,55 @@ class LogEventsList {
                $month = '', $filter = null, $tagFilter='' )
        {
                global $wgScript, $wgMiserMode;
-               $action = htmlspecialchars( $wgScript );
+
+               $action = $wgScript;
                $title = SpecialPage::getTitleFor( 'Log' );
-               $special = htmlspecialchars( $title->getPrefixedDBkey() );
+               $special = $title->getPrefixedDBkey();
+
                // For B/C, we take strings, but make sure they are converted...
                $types = ($types === '') ? array() : (array)$types;
 
                $tagSelector = ChangeTags::buildTagFilterSelector( $tagFilter );
 
-               $this->out->addHTML( "<form action=\"$action\" method=\"get\"><fieldset>" .
-                       Xml::element( 'legend', array(), wfMsg( 'log' ) ) .
-                       Xml::hidden( 'title', $special ) . "\n" .
-                       $this->getTypeMenu( $types ) . "\n" .
-                       $this->getUserInput( $user ) . "\n" .
-                       $this->getTitleInput( $page ) . "\n" .
-                       ( !$wgMiserMode ? ($this->getTitlePattern( $pattern )."\n") : "" ) .
-                       "<p>" . Xml::dateMenu( $year, $month ) . "\n" .
-                       ( $tagSelector ? Xml::tags( 'p', null, implode( '&nbsp;', $tagSelector ) ) :'' ). "\n" .
-                       ( $filter ? "</p><p>".$this->getFilterLinks( $filter )."\n" : "" ) . "\n" .
-                       Xml::submitButton( wfMsg( 'allpagessubmit' ) ) . "</p>\n" .
-                       "</fieldset></form>"
-               );
+               $html = '';
+               $html .= Xml::hidden( 'title', $special );
+
+               // Basic selectors
+               $html .= $this->getTypeMenu( $types ) . "\n";
+               $html .= $this->getUserInput( $user ) . "\n";
+               $html .= $this->getTitleInput( $page ) . "\n";
+               $html .= $this->getExtraInputs( $types ) . "\n";
+
+               // Title pattern, if allowed
+               if (!$wgMiserMode) {
+                       $html .= $this->getTitlePattern( $pattern ) . "\n";
+               }
+
+               // date menu
+               $html .= Xml::tags( 'p', null, Xml::dateMenu( $year, $month ) );
+
+               // Tag filter
+               if ($tagSelector) {
+                       $html .= Xml::tags( 'p', null, implode( '&nbsp;', $tagSelector ) );
+               }
+
+               // Filter links
+               if ($filter) {
+                       $html .= Xml::tags( 'p', null, $this->getFilterLinks( $filter ) );
+               }
+
+               // Submit button
+               $html .= Xml::submitButton( wfMsg( 'allpagessubmit' ) );
+
+               // Fieldset
+               $html = Xml::fieldset( wfMsg( 'log' ), $html );
+
+               // Form wrapping
+               $html = Xml::tags( 'form', array( 'action' => $action, 'method' => 'get' ), $html );
+
+               $this->out->addHTML( $html );
        }
-       
+
        /**
         * @param $filter Array
         * @return String: Formatted HTML
@@ -108,17 +138,29 @@ class LogEventsList {
                $links = array();
                $hiddens = ''; // keep track for "go" button
                foreach( $filter as $type => $val ) {
+                       // Should the below assignment be outside the foreach?
+                       // Then it would have to be copied. Not certain what is more expensive.
+                       $query = $this->getDefaultQuery();
+                       $queryKey = "hide_{$type}_log";
+
                        $hideVal = 1 - intval($val);
-                       $link = $this->skin->makeKnownLinkObj( $wgTitle, $messages[$hideVal],
-                               wfArrayToCGI( array( "hide_{$type}_log" => $hideVal ), $this->getDefaultQuery() )
+                       $query[$queryKey] = $hideVal;
+
+                       $link = $this->skin->link(
+                               $wgTitle,
+                               $messages[$hideVal],
+                               array(),
+                               $query,
+                               array( 'known', 'noclasses' )
                        );
+
                        $links[$type] = wfMsgHtml( "log-show-hide-{$type}", $link );
                        $hiddens .= Xml::hidden( "hide_{$type}_log", $val ) . "\n";
                }
                // Build links
                return '<small>'.$wgLang->pipeList( $links ) . '</small>' . $hiddens;
        }
-       
+
        private function getDefaultQuery() {
                if ( !isset( $this->mDefaultQuery ) ) {
                        $this->mDefaultQuery = $_GET;
@@ -148,16 +190,16 @@ class LogEventsList {
                // First pass to load the log names
                foreach( $validTypes as $type ) {
                        $text = LogPage::logName( $type );
-                       $typesByName[$text] = $type;
+                       $typesByName[$type] = $text;
                }
 
                // Second pass to sort by name
-               ksort($typesByName);
+               asort($typesByName);
 
                // Note the query type
                $queryType = count($queryTypes) == 1 ? $queryTypes[0] : '';
                // Third pass generates sorted XHTML content
-               foreach( $typesByName as $text => $type ) {
+               foreach( $typesByName as $type => $text ) {
                        $selected = ($type == $queryType);
                        // Restricted types
                        if ( isset($wgLogRestrictions[$type]) ) {
@@ -178,7 +220,9 @@ class LogEventsList {
         * @return String: Formatted HTML
         */
        private function getUserInput( $user ) {
-               return Xml::inputLabel( wfMsg( 'specialloguserlabel' ), 'user', 'mw-log-user', 15, $user );
+               return '<span style="white-space: nowrap">' .
+                       Xml::inputLabel( wfMsg( 'specialloguserlabel' ), 'user', 'mw-log-user', 15, $user ) .
+                       '</span>';
        }
 
        /**
@@ -186,7 +230,9 @@ class LogEventsList {
         * @return String: Formatted HTML
         */
        private function getTitleInput( $title ) {
-               return Xml::inputLabel( wfMsg( 'speciallogtitlelabel' ), 'page', 'mw-log-page', 20, $title );
+               return '<span style="white-space: nowrap">' .
+                       Xml::inputLabel( wfMsg( 'speciallogtitlelabel' ), 'page', 'mw-log-page', 20, $title ) .
+                       '</span>';
        }
 
        /**
@@ -198,6 +244,20 @@ class LogEventsList {
                        '</span>';
        }
 
+       private function getExtraInputs( $types ) {
+               global $wgRequest;
+               $offender = $wgRequest->getVal('offender');
+               $user = User::newFromName( $offender, false );
+               if( !$user || ($user->getId() == 0 && !IP::isIPAddress($offender) ) ) {
+                       $offender = ''; // Blank field if invalid
+               }
+               if( count($types) == 1 && $types[0] == 'suppress' ) {
+                       return Xml::inputLabel( wfMsg('revdelete-offender'), 'offender',
+                               'mw-log-offender', 20, $offender );
+               }
+               return '';
+       }
+
        public function beginLogEventsList() {
                return "<ul>\n";
        }
@@ -215,17 +275,17 @@ class LogEventsList {
 
                $title = Title::makeTitle( $row->log_namespace, $row->log_title );
                $classes = array( "mw-logline-{$row->log_type}" );
-               $time = $wgLang->timeanddate( wfTimestamp(TS_MW, $row->log_timestamp), true );
+               $time = $wgLang->timeanddate( wfTimestamp( TS_MW, $row->log_timestamp ), true );
                // User links
-               if( self::isDeleted($row,LogPage::DELETED_USER) ) {
+               if( self::isDeleted( $row, LogPage::DELETED_USER ) ) {
                        $userLink = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
                } else {
                        $userLink = $this->skin->userLink( $row->log_user, $row->user_name ) .
                                $this->skin->userToolLinks( $row->log_user, $row->user_name, true, 0, $row->user_editcount );
                }
                // Comment
-               if( self::isDeleted($row,LogPage::DELETED_COMMENT) ) {
-                       $comment = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
+               if( self::isDeleted( $row, LogPage::DELETED_COMMENT ) ) {
+                       $comment = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-comment' ) . '</span>';
                } else {
                        $comment = $wgContLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
                }
@@ -233,46 +293,79 @@ class LogEventsList {
                $paramArray = LogPage::extractParams( $row->log_params );
                $revert = $del = '';
                // Some user can hide log items and have review links
-               if( !($this->flags & self::NO_ACTION_LINK) && $wgUser->isAllowed( 'deleterevision' ) ) {
-                       $del = $this->getShowHideLinks( $row ) . ' ';
+               if( !( $this->flags & self::NO_ACTION_LINK ) && $wgUser->isAllowed( 'deletedhistory' ) ) {
+                       // Don't show useless link to people who cannot hide revisions
+                       if( $row->log_deleted || $wgUser->isAllowed( 'deleterevision' ) ) {
+                               $del = $this->getShowHideLinks( $row ) . ' ';
+                       }
                }
                // Add review links and such...
-               if( ($this->flags & self::NO_ACTION_LINK) || ($row->log_deleted & LogPage::DELETED_ACTION) ) {
+               if( ( $this->flags & self::NO_ACTION_LINK ) || ( $row->log_deleted & LogPage::DELETED_ACTION ) ) {
                        // Action text is suppressed...
-               } else if( self::typeAction($row,'move','move','move') && !empty($paramArray[0]) ) {
+               } else if( self::typeAction( $row, 'move', 'move', 'move' ) && !empty( $paramArray[0] ) ) {
                        $destTitle = Title::newFromText( $paramArray[0] );
                        if( $destTitle ) {
-                               $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
+                               $revert = '(' . $this->skin->link(
+                                       SpecialPage::getTitleFor( 'Movepage' ),
                                        $this->message['revertmove'],
-                                       'wpOldTitle=' . urlencode( $destTitle->getPrefixedDBkey() ) .
-                                       '&wpNewTitle=' . urlencode( $title->getPrefixedDBkey() ) .
-                                       '&wpReason=' . urlencode( wfMsgForContent( 'revertmove' ) ) .
-                                       '&wpMovetalk=0' ) . ')';
+                                       array(),
+                                       array(
+                                               'wpOldTitle' => $destTitle->getPrefixedDBkey(),
+                                               'wpNewTitle' => $title->getPrefixedDBkey(),
+                                               'wpReason' => wfMsgForContent( 'revertmove' ),
+                                               'wpMovetalk' => 0
+                                       ),
+                                       array( 'known', 'noclasses' )
+                               ) . ')';
                        }
                // Show undelete link
-               } else if( self::typeAction($row,array('delete','suppress'),'delete','delete') ) {
-                       $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete' ),
-                               $this->message['undeletelink'], 'target='. urlencode( $title->getPrefixedDBkey() ) ) . ')';
+               } else if( self::typeAction( $row, array( 'delete', 'suppress' ), 'delete', 'deletedhistory' ) ) {
+                       if( !$wgUser->isAllowed( 'undelete' ) ) {
+                               $viewdeleted = $this->message['undeleteviewlink'];
+                       } else {
+                               $viewdeleted = $this->message['undeletelink'];
+                       }
+
+                       $revert = '(' . $this->skin->link(
+                               SpecialPage::getTitleFor( 'Undelete' ),
+                               $viewdeleted,
+                               array(),
+                               array( 'target' => $title->getPrefixedDBkey() ),
+                               array( 'known', 'noclasses' )
+                        ) . ')';
                // Show unblock/change block link
-               } else if( self::typeAction($row,array('block','suppress'),array('block','reblock'),'block') ) {
+               } else if( self::typeAction( $row, array( 'block', 'suppress' ), array( 'block', 'reblock' ), 'block' ) ) {
                        $revert = '(' .
-                               $this->skin->link( SpecialPage::getTitleFor( 'Ipblocklist' ),
+                               $this->skin->link(
+                                       SpecialPage::getTitleFor( 'Ipblocklist' ),
                                        $this->message['unblocklink'],
                                        array(),
-                                       array( 'action' => 'unblock', 'ip' => $row->log_title ),
-                                       'known' ) 
-                               . $this->message['pipe-separator'] .
-                               $this->skin->link( SpecialPage::getTitleFor( 'Blockip', $row->log_title ), 
+                                       array(
+                                               'action' => 'unblock',
+                                               'ip' => $row->log_title
+                                       ),
+                                       'known'
+                               ) .
+                               $this->message['pipe-separator'] .
+                               $this->skin->link(
+                                       SpecialPage::getTitleFor( 'Blockip', $row->log_title ),
                                        $this->message['change-blocklink'],
-                                       array(), array(), 'known' ) .
+                                       array(),
+                                       array(),
+                                       'known'
+                               ) .
                                ')';
                // Show change protection link
                } else if( self::typeAction( $row, 'protect', array( 'modify', 'protect', 'unprotect' ) ) ) {
-                       $revert .= ' (' . 
+                       $revert .= ' (' .
                                $this->skin->link( $title,
                                        $this->message['hist'],
                                        array(),
-                                       array( 'action' => 'history', 'offset' => $row->log_timestamp ) );
+                                       array(
+                                               'action' => 'history',
+                                               'offset' => $row->log_timestamp
+                                       )
+                               );
                        if( $wgUser->isAllowed( 'protect' ) ) {
                                $revert .= $this->message['pipe-separator'] .
                                        $this->skin->link( $title,
@@ -283,46 +376,94 @@ class LogEventsList {
                        }
                        $revert .= ')';
                // Show unmerge link
-               } else if( self::typeAction($row,'merge','merge','mergehistory') ) {
+               } else if( self::typeAction( $row, 'merge', 'merge', 'mergehistory' ) ) {
                        $merge = SpecialPage::getTitleFor( 'Mergehistory' );
-                       $revert = '(' .  $this->skin->makeKnownLinkObj( $merge, $this->message['revertmerge'],
-                               wfArrayToCGI( array('target' => $paramArray[0], 'dest' => $title->getPrefixedDBkey(), 
-                                       'mergepoint' => $paramArray[1] ) ) ) . ')';
+                       $revert = '(' . $this->skin->link(
+                               $merge,
+                               $this->message['revertmerge'],
+                               array(),
+                               array(
+                                       'target' => $paramArray[0],
+                                       'dest' => $title->getPrefixedDBkey(),
+                                       'mergepoint' => $paramArray[1]
+                               ),
+                               array( 'known', 'noclasses' )
+                       ) . ')';
                // If an edit was hidden from a page give a review link to the history
-               } else if( self::typeAction($row,array('delete','suppress'),'revision','deleterevision') ) {
+               } else if( self::typeAction( $row, array( 'delete', 'suppress' ), 'revision', 'deletedhistory' ) ) {
                        if( count($paramArray) >= 2 ) {
-                               $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
                                // Different revision types use different URL params...
                                $key = $paramArray[0];
-                               // $paramArray[1] is a CVS of the IDs
+                               // $paramArray[1] is a CSV of the IDs
                                $Ids = explode( ',', $paramArray[1] );
-                               $query = urlencode($paramArray[1]);
+                               $query = $paramArray[1];
                                $revert = array();
                                // Diff link for single rev deletions
-                               if( $key === 'oldid' && count($Ids) == 1 ) {
-                                       $token = urlencode( $wgUser->editToken( intval($Ids[0]) ) );
-                                       $revert[] = $this->skin->makeKnownLinkObj( $title, $this->message['diff'], 
-                                               'diff='.intval($Ids[0])."&unhide=1&token=$token" );
+                               if( count($Ids) == 1 ) {
+                                       // Live revision diffs...
+                                       if( in_array( $key, array( 'oldid', 'revision' ) ) ) {
+                                               $revert[] = $this->skin->link(
+                                                       $title,
+                                                       $this->message['diff'],
+                                                       array(),
+                                                       array(
+                                                               'diff' => intval( $Ids[0] ),
+                                                               'unhide' => 1
+                                                       ),
+                                                       array( 'known', 'noclasses' )
+                                               );
+                                       // Deleted revision diffs...
+                                       } else if( in_array( $key, array( 'artimestamp','archive' ) ) ) {
+                                               $revert[] = $this->skin->link(
+                                                       SpecialPage::getTitleFor( 'Undelete' ),
+                                                       $this->message['diff'], 
+                                                       array(),
+                                                       array(
+                                                               'target'    => $title->getPrefixedDBKey(),
+                                                               'diff'      => 'prev',
+                                                               'timestamp' => $Ids[0]
+                                                       ),
+                                                       array( 'known', 'noclasses' )
+                                               );
+                                       }
                                }
                                // View/modify link...
-                               $revert[] = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
-                                       'target='.$title->getPrefixedUrl()."&$key=$query" );
+                               $revert[] = $this->skin->link(
+                                       SpecialPage::getTitleFor( 'Revisiondelete' ),
+                                       $this->message['revdel-restore'],
+                                       array(),
+                                       array(
+                                               'target' => $title->getPrefixedText(),
+                                               'type' => $key,
+                                               'ids' => $query
+                                       ),
+                                       array( 'known', 'noclasses' )
+                               );
                                // Pipe links
-                               $revert = '(' . implode(' | ',$revert) . ')';
+                               $revert = wfMsg( 'parentheses', $wgLang->pipeList( $revert ) );
                        }
                // Hidden log items, give review link
-               } else if( self::typeAction($row,array('delete','suppress'),'event','deleterevision') ) {
+               } else if( self::typeAction( $row, array( 'delete', 'suppress' ), 'event', 'deletedhistory' ) ) {
                        if( count($paramArray) >= 1 ) {
                                $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
-                               // $paramArray[1] is a CVS of the IDs
+                               // $paramArray[1] is a CSV of the IDs
                                $Ids = explode( ',', $paramArray[0] );
-                               $query = urlencode($paramArray[0]);
+                               $query = $paramArray[0];
                                // Link to each hidden object ID, $paramArray[1] is the url param
-                               $revert = '(' . $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'], 
-                                       'target='.$title->getPrefixedUrl()."&logid=$query" ) . ')';
+                               $revert = '(' . $this->skin->link(
+                                       $revdel,
+                                       $this->message['revdel-restore'], 
+                                       array(),
+                                       array(
+                                               'target' => $title->getPrefixedText(),
+                                               'type' => 'logging',
+                                               'ids' => $query
+                                       ),
+                                       array( 'known', 'noclasses' )
+                               ) . ')';
                        }
                // Self-created users
-               } else if( self::typeAction($row,'newusers','create2') ) {
+               } else if( self::typeAction( $row, 'newusers', 'create2' ) ) {
                        if( isset( $paramArray[0] ) ) {
                                $revert = $this->skin->userToolLinks( $paramArray[0], $title->getDBkey(), true );
                        } else {
@@ -340,21 +481,23 @@ class LogEventsList {
                                &$comment, &$revert, $row->log_timestamp ) );
                }
                // Event description
-               if( self::isDeleted($row,LogPage::DELETED_ACTION) ) {
-                       $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
+               if( self::isDeleted( $row, LogPage::DELETED_ACTION ) ) {
+                       $action = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-event' ) . '</span>';
                } else {
                        $action = LogPage::actionText( $row->log_type, $row->log_action, $title,
                                $this->skin, $paramArray, true );
                }
 
                // Any tags...
-               list($tagDisplay, $newClasses) = ChangeTags::formatSummaryRow( $row->ts_tags, 'logevent' );
+               list( $tagDisplay, $newClasses ) = ChangeTags::formatSummaryRow( $row->ts_tags, 'logevent' );
                $classes = array_merge( $classes, $newClasses );
 
                if( $revert != '' ) {
                        $revert = '<span class="mw-logevent-actionlink">' . $revert . '</span>';
                }
 
+               $time = htmlspecialchars( $time );
+
                return Xml::tags( 'li', array( "class" => implode( ' ', $classes ) ),
                        $del . $time . ' ' . $userLink . ' ' . $action . ' ' . $comment . ' ' . $revert . " $tagDisplay" ) . "\n";
        }
@@ -364,20 +507,24 @@ class LogEventsList {
         * @return string
         */
        private function getShowHideLinks( $row ) {
-               $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
+               global $wgUser;
+               if( $row->log_type == 'suppress' ) {
+                       return ''; // No one can hide items from the oversight log
+               }
+               $canHide = $wgUser->isAllowed( 'deleterevision' );
                // If event was hidden from sysops
                if( !self::userCan( $row, LogPage::DELETED_RESTRICTED ) ) {
-                       $del = Xml::tags( 'span', array( 'class'=>'mw-revdelundel-link' ),
-                               '('.$this->message['rev-delundel'].')' );
-               } else if( $row->log_type == 'suppress' ) {
-                       $del = ''; // No one should be hiding from the oversight log
+                       $del = $this->skin->revDeleteLinkDisabled( $canHide );
                } else {
                        $target = SpecialPage::getTitleFor( 'Log', $row->log_type );
                        $page = Title::makeTitle( $row->log_namespace, $row->log_title );
-                       $query = array( 'target' => $target->getPrefixedDBkey(),
-                               'logid' => $row->log_id, 'page' => $page->getPrefixedDBkey() );
+                       $query = array(
+                               'target' => $target->getPrefixedDBkey(),
+                               'type'   => 'logging',
+                               'ids'    => $row->log_id,
+                       );
                        $del = $this->skin->revDeleteLink( $query,
-                               self::isDeleted( $row, LogPage::DELETED_RESTRICTED ) );
+                               self::isDeleted( $row, LogPage::DELETED_RESTRICTED ), $canHide );
                }
                return $del;
        }
@@ -391,10 +538,10 @@ class LogEventsList {
         */
        public static function typeAction( $row, $type, $action, $right='' ) {
                $match = is_array($type) ?
-                       in_array($row->log_type,$type) : $row->log_type == $type;
+                       in_array( $row->log_type, $type ) : $row->log_type == $type;
                if( $match ) {
-                       $match = is_array($action) ?
-                               in_array($row->log_action,$action) : $row->log_action == $action;
+                       $match = is_array( $action ) ?
+                               in_array( $row->log_action, $action ) : $row->log_action == $action;
                        if( $match && $right ) {
                                global $wgUser;
                                $match = $wgUser->isAllowed( $right );
@@ -411,12 +558,26 @@ class LogEventsList {
         * @return Boolean
         */
        public static function userCan( $row, $field ) {
-               if( ( $row->log_deleted & $field ) == $field ) {
+               return self::userCanBitfield( $row->log_deleted, $field );
+       }
+       
+       /**
+        * Determine if the current user is allowed to view a particular
+        * field of this log row, if it's marked as deleted.
+        * @param $bitfield Integer (current field)
+        * @param $field Integer
+        * @return Boolean
+        */
+       public static function userCanBitfield( $bitfield, $field ) {
+               if( $bitfield & $field ) {
                        global $wgUser;
-                       $permission = ( $row->log_deleted & LogPage::DELETED_RESTRICTED ) == LogPage::DELETED_RESTRICTED
-                               ? 'suppressrevision'
-                               : 'deleterevision';
-                       wfDebug( "Checking for $permission due to $field match on $row->log_deleted\n" );
+                       $permission = '';
+                       if ( $bitfield & LogPage::DELETED_RESTRICTED ) {
+                               $permission = 'suppressrevision';
+                       } else {
+                               $permission = 'deletedhistory';
+                       }
+                       wfDebug( "Checking for $permission due to $field match on $bitfield\n" );
                        return $wgUser->isAllowed( $permission );
                } else {
                        return true;
@@ -429,33 +590,111 @@ class LogEventsList {
         * @return Boolean
         */
        public static function isDeleted( $row, $field ) {
-               return ($row->log_deleted & $field) == $field;
+               return ( $row->log_deleted & $field ) == $field;
        }
 
        /**
-        * Quick function to show a short log extract
-        * @param $out OutputPage
+        * Show log extract. Either with text and a box (set $msgKey) or without (don't set $msgKey)
+        * @param $out OutputPage or String-by-reference
         * @param $types String or Array
-        * @param $page String
-        * @param $user String
-        * @param $lim Integer
-        * @param $conds Array
+        * @param $page String The page title to show log entries for
+        * @param $user String The user who made the log entries
+        * @param $param Associative Array with the following additional options:
+        * - lim Integer Limit of items to show, default is 50
+        * - conds Array Extra conditions for the query (e.g. "log_action != 'revision'")
+        * - showIfEmpty boolean Set to false if you don't want any output in case the loglist is empty
+        *   if set to true (default), "No matching items in log" is displayed if loglist is empty
+        * - msgKey Array If you want a nice box with a message, set this to the key of the message.
+        *   First element is the message key, additional optional elements are parameters for the key
+        *   that are processed with wgMsgExt and option 'parse'
+        * - offset Set to overwrite offset parameter in $wgRequest
+        *   set to '' to unset offset
+        * - wrap String: Wrap the message in html (usually something like "<div ...>$1</div>").
+        * @return Integer Number of total log items (not limited by $lim)
         */
-       public static function showLogExtract( $out, $types=array(), $page='', $user='', $lim=0, $conds=array() ) {
-               global $wgUser;
-               # Insert list of top 50 or so items
-               $loglist = new LogEventsList( $wgUser->getSkin(), $out, 0 );
+       public static function showLogExtract( &$out, $types=array(), $page='', $user='', 
+                       $param = array() ) {
+
+               $defaultParameters = array(
+                       'lim' => 25,
+                       'conds' => array(),
+                       'showIfEmpty' => true,
+                       'msgKey' => array(''),
+                       'wrap' => "$1"
+               );
+       
+               # The + operator appends elements of remaining keys from the right
+               # handed array to the left handed, whereas duplicated keys are NOT overwritten.
+               $param += $defaultParameters;
+
+               global $wgUser, $wgOut;
+               # Convert $param array to individual variables
+               $lim = $param['lim'];
+               $conds = $param['conds'];
+               $showIfEmpty = $param['showIfEmpty'];
+               $msgKey = $param['msgKey'];
+               $wrap = $param['wrap'];
+               if ( !is_array( $msgKey ) )
+                       $msgKey = array( $msgKey );
+               # Insert list of top 50 (or top $lim) items
+               $loglist = new LogEventsList( $wgUser->getSkin(), $wgOut, 0 );
                $pager = new LogPager( $loglist, $types, $user, $page, '', $conds );
+               if ( isset( $param['offset'] ) ) # Tell pager to ignore $wgRequest offset
+                       $pager->setOffset( $param['offset'] );
                if( $lim > 0 ) $pager->mLimit = $lim;
                $logBody = $pager->getBody();
+               $s = '';
                if( $logBody ) {
-                       $out->addHTML(
-                               $loglist->beginLogEventsList() .
-                               $logBody .
-                               $loglist->endLogEventsList()
+                       if ( $msgKey[0] ) {
+                               $s = '<div class="mw-warning-with-logexcerpt">';
+
+                               if ( count( $msgKey ) == 1 ) {
+                                       $s .= wfMsgExt( $msgKey[0], array( 'parse' ) );
+                               } else { // Process additional arguments
+                                       $args = $msgKey;
+                                       array_shift( $args );
+                                       $s .= wfMsgExt( $msgKey[0], array( 'parse' ), $args );
+                               }
+                       }
+                       $s .= $loglist->beginLogEventsList() .
+                                $logBody .
+                                $loglist->endLogEventsList();
+               } else {
+                       if ( $showIfEmpty )
+                               $s = Html::rawElement( 'div', array( 'class' => 'mw-warning-logempty' ),
+                                       wfMsgExt( 'logempty', array( 'parseinline' ) ) );
+               }
+               if( $pager->getNumRows() > $pager->mLimit ) { # Show "Full log" link
+                       $urlParam = array();
+                       if ( $page != '')
+                               $urlParam['page'] = $page;
+                       if ( $user != '')
+                               $urlParam['user'] = $user;
+                       if ( !is_array( $types ) ) # Make it an array, if it isn't
+                               $types = array( $types );
+                       # If there is exactly one log type, we can link to Special:Log?type=foo
+                       if ( count( $types ) == 1 )
+                               $urlParam['type'] = $types[0];
+                       $s .= $wgUser->getSkin()->link(
+                               SpecialPage::getTitleFor( 'Log' ),
+                               wfMsgHtml( 'log-fulllog' ),
+                               array(),
+                               $urlParam
                        );
+
+               }
+               if ( $logBody && $msgKey[0] )
+                       $s .= '</div>';
+
+               if ( $wrap!='' ) { // Wrap message in html
+                       $s = str_replace( '$1', $s, $wrap );
+               }
+
+               // $out can be either an OutputPage object or a String-by-reference
+               if( $out instanceof OutputPage ){
+                       $out->addHTML( $s );
                } else {
-                       $out->addWikiMsg( 'logempty' );
+                       $out = $s;
                }
                return $pager->getNumRows();
        }
@@ -497,13 +736,13 @@ class LogPager extends ReverseChronologicalPager {
        /**
         * constructor
         * @param $list LogEventsList
-        * @param $types String or Array
-        * @param $user String
-        * @param $title String
-        * @param $pattern String
-        * @param $conds Array
-        * @param $year Integer
-        * @param $month Integer
+        * @param $types String or Array log types to show
+        * @param $user String The user who made the log entries
+        * @param $title String The page title the log entries are for
+        * @param $pattern String Do a prefix search rather than an exact title match
+        * @param $conds Array Extra conditions for the query
+        * @param $year Integer The year to start from
+        * @param $month Integer The month to start from
         */
        public function __construct( $list, $types = array(), $user = '', $title = '', $pattern = '',
                $conds = array(), $year = false, $month = false, $tagFilter = '' ) 
@@ -560,10 +799,13 @@ class LogPager extends ReverseChronologicalPager {
                $types = ($types === '') ? array() : (array)$types;
                // Don't even show header for private logs; don't recognize it...
                foreach ( $types as $type ) {
-                       if( isset( $wgLogRestrictions[$type] ) && !$wgUser->isAllowed($wgLogRestrictions[$type]) ) {
+                       if( isset( $wgLogRestrictions[$type] )
+                               && !$wgUser->isAllowed($wgLogRestrictions[$type])
+                       ) {
                                $types = array_diff( $types, array( $type ) );
                        }
                }
+               $this->types = $types;
                // Don't show private logs to unprivileged users.
                // Also, only show them upon specific request to avoid suprises.
                $audience = $types ? 'user' : 'public';
@@ -572,7 +814,6 @@ class LogPager extends ReverseChronologicalPager {
                        $this->mConds[] = $hideLogs;
                }
                if( count($types) ) {
-                       $this->types = $types;
                        $this->mConds['log_type'] = $types;
                        // Set typeCGI; used in url param for paging
                        if( count($types) == 1 ) $this->typeCGI = $types[0];
@@ -601,8 +842,11 @@ class LogPager extends ReverseChronologicalPager {
                        global $wgUser;
                        $this->mConds['log_user'] = $userid;
                        // Paranoia: avoid brute force searches (bug 17342)
-                       if( !$wgUser->isAllowed( 'suppressrevision' ) ) {
-                               $this->mConds[] = 'log_deleted & ' . LogPage::DELETED_USER . ' = 0';
+                       if( !$wgUser->isAllowed( 'deletedhistory' ) ) {
+                               $this->mConds[] = $this->mDb->bitAnd('log_deleted', LogPage::DELETED_USER) . ' = 0';
+                       } else if( !$wgUser->isAllowed( 'suppressrevision' ) ) {
+                               $this->mConds[] = $this->mDb->bitAnd('log_deleted', LogPage::SUPPRESSED_USER) .
+                                       ' != ' . LogPage::SUPPRESSED_USER;
                        }
                        $this->user = $usertitle->getText();
                }
@@ -618,11 +862,13 @@ class LogPager extends ReverseChronologicalPager {
                global $wgMiserMode, $wgUser;
 
                $title = Title::newFromText( $page );
-               if( strlen($page) == 0 || !$title instanceof Title )
+               if( strlen( $page ) == 0 || !$title instanceof Title )
                        return false;
 
                $this->title = $title->getPrefixedText();
                $ns = $title->getNamespace();
+               $db = $this->mDb;
+
                # Using the (log_namespace, log_title, log_timestamp) index with a
                # range scan (LIKE) on the first two parts, instead of simple equality,
                # makes it unusable for sorting.  Sorted retrieval using another index
@@ -635,50 +881,64 @@ class LogPager extends ReverseChronologicalPager {
                # log entries for even the busiest pages, so it can be safely scanned
                # in full to satisfy an impossible condition on user or similar.
                if( $pattern && !$wgMiserMode ) {
-                       # use escapeLike to avoid expensive search patterns like 't%st%'
-                       $safetitle = $this->mDb->escapeLike( $title->getDBkey() );
                        $this->mConds['log_namespace'] = $ns;
-                       $this->mConds[] = "log_title LIKE '$safetitle%'";
+                       $this->mConds[] = 'log_title ' . $db->buildLike( $title->getDBkey(), $db->anyString() );
                        $this->pattern = $pattern;
                } else {
                        $this->mConds['log_namespace'] = $ns;
                        $this->mConds['log_title'] = $title->getDBkey();
                }
                // Paranoia: avoid brute force searches (bug 17342)
-               if( !$wgUser->isAllowed( 'suppressrevision' ) ) {
-                       $this->mConds[] = 'log_deleted & ' . LogPage::DELETED_ACTION . ' = 0';
+               if( !$wgUser->isAllowed( 'deletedhistory' ) ) {
+                       $this->mConds[] = $db->bitAnd('log_deleted', LogPage::DELETED_ACTION) . ' = 0';
+               } else if( !$wgUser->isAllowed( 'suppressrevision' ) ) {
+                       $this->mConds[] = $db->bitAnd('log_deleted', LogPage::SUPPRESSED_ACTION) .
+                               ' != ' . LogPage::SUPPRESSED_ACTION;
                }
        }
 
        public function getQueryInfo() {
+               global $wgOut;
                $tables = array( 'logging', 'user' );
                $this->mConds[] = 'user_id = log_user';
                $index = array();
+               $options = array();
                # Add log_search table if there are conditions on it
                if( array_key_exists('ls_field',$this->mConds) ) {
                        $tables[] = 'log_search';
-                       $index = array( 'log_search' => 'PRIMARY', 'logging' => 'PRIMARY' );
-               # Don't use the wrong logging index
+                       $index['log_search'] = 'ls_field_val';
+                       $index['logging'] = 'PRIMARY';
+                       $options[] = 'DISTINCT';
+               # Avoid usage of the wrong index by limiting
+               # the choices of available indexes. This mainly
+               # avoids site-breaking filesorts.
                } else if( $this->title || $this->pattern || $this->user ) {
-                       $index = array( 'logging' => array('page_time','user_time') );
-               } else if( $this->types ) {
-                       $index = array( 'logging' => 'type_time' );
+                       $index['logging'] = array( 'page_time', 'user_time' );
+                       if( count($this->types) == 1 ) {
+                               $index['logging'][] = 'log_user_type_time';
+                       }
+               } else if( count($this->types) == 1 ) {
+                       $index['logging'] = 'type_time';
                } else {
-                       $index = array( 'logging' => 'times' );
+                       $index['logging'] = 'times';
                }
+               $options['USE INDEX'] = $index;
+               # Don't show duplicate rows when using log_search
                $info = array(
-                       'tables' => $tables,
-                       'fields' => array( 'log_type', 'log_action', 'log_user', 'log_namespace', 'log_title', 'log_params',
-                               'log_comment', 'log_id', 'log_deleted', 'log_timestamp', 'user_name', 'user_editcount' ),
-                       'conds' => $this->mConds,
-                       'options' => array( 'USE INDEX' => $index ),
-                       'join_conds' => array( 'user' => array( 'INNER JOIN', 'user_id=log_user' ),
-                               'log_search' => array( 'INNER JOIN', 'ls_log_id=log_id' ) ),
+                       'tables'     => $tables,
+                       'fields'     => array( 'log_type', 'log_action', 'log_user', 'log_namespace',
+                               'log_title', 'log_params', 'log_comment', 'log_id', 'log_deleted',
+                               'log_timestamp', 'user_name', 'user_editcount' ),
+                       'conds'      => $this->mConds,
+                       'options'    => $options,
+                       'join_conds' => array(
+                               'user' => array( 'INNER JOIN', 'user_id=log_user' ),
+                               'log_search' => array( 'INNER JOIN', 'ls_log_id=log_id' )
+                       )
                );
-
+               # Add ChangeTags filter query
                ChangeTags::modifyDisplayQuery( $info['tables'], $info['fields'], $info['conds'],
                        $info['join_conds'], $info['options'], $this->mTagFilter );
-
                return $info;
        }
 
@@ -736,14 +996,10 @@ class LogPager extends ReverseChronologicalPager {
        }
 
        public function doQuery() {
-               // Work around MySQL optimizer bug
-               if ( in_array( get_class( $this->mDb ), array( 'Database', 'DatabaseMysql' ) ) ) {
-                       $this->mDb->query( 'SET SQL_BIG_SELECTS=1' );
-                       parent::doQuery();
-                       $this->mDb->query( 'SET SQL_BIG_SELECTS=0' );
-               } else {
-                       parent::doQuery();
-               }
+               // Workaround MySQL optimizer bug
+               $this->mDb->setBigSelects();
+               parent::doQuery();
+               $this->mDb->setBigSelects( 'default' );
        }
 }