LegacyLogFormatter.php

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<?php
use MediaWiki\HookContainer\HookContainer;
use MediaWiki\HookContainer\HookRunner;
 
class LegacyLogFormatter extends LogFormatter {
    private $comment = null;
 
    private $revert = null;
 
    private HookRunner $hookRunner;
 
    public function __construct(
        LogEntry $entry,
        HookContainer $hookContainer
    ) {
        parent::__construct( $entry );
        $this->hookRunner = new HookRunner( $hookContainer );
    }
 
    public function getComment() {
        $this->comment ??= parent::getComment();
 
        // Make sure we execute the LogLine hook so that we immediately return
        // the correct value.
        if ( $this->revert === null ) {
            $this->getActionLinks();
        }
 
        return $this->comment;
    }
 
    protected function getActionMessage() {
        $entry = $this->entry;
        $action = LogPage::actionText(
            $entry->getType(),
            $entry->getSubtype(),
            $entry->getTarget(),
            $this->plaintext ? null : $this->context->getSkin(),
            (array)$entry->getParameters(),
            !$this->plaintext // whether to filter [[]] links
        );
 
        $performer = $this->getPerformerElement();
        if ( !$this->irctext ) {
            $sep = $this->msg( 'word-separator' );
            $sep = $this->plaintext ? $sep->text() : $sep->escaped();
            $action = $performer . $sep . $action;
        }
 
        return $action;
    }
 
    public function getActionLinks() {
        if ( $this->revert !== null ) {
            return $this->revert;
        }
 
        if ( $this->entry->isDeleted( LogPage::DELETED_ACTION ) ) {
            $this->revert = '';
            return $this->revert;
        }
 
        $title = $this->entry->getTarget();
        $type = $this->entry->getType();
        $subtype = $this->entry->getSubtype();
 
        // Do nothing. The implementation is handled by the hook modifying the
        // passed-by-ref parameters. This also changes the default value so that
        // getComment() and getActionLinks() do not call them indefinitely.
        $this->revert = '';
 
        // This is to populate the $comment member of this instance so that it
        // can be modified when calling the hook just below.
        if ( $this->comment === null ) {
            $this->getComment();
        }
 
        $params = $this->entry->getParameters();
 
        $this->hookRunner->onLogLine(
            $type, $subtype, $title, $params, $this->comment, $this->revert, $this->entry->getTimestamp() );
 
        return $this->revert;
    }
}