FallbackContentHandler.php

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<?php
use MediaWiki\Content\Renderer\ContentParseParams;
 
class FallbackContentHandler extends ContentHandler {
 
    public function __construct( $modelId, $formats = null ) {
        parent::__construct(
            $modelId,
            $formats ?? [
                'application/octet-stream',
                'application/unknown',
                'application/x-binary',
                'text/unknown',
                'unknown/unknown',
            ]
        );
    }
 
    public function serializeContent( Content $content, $format = null ) {
        '@phan-var FallbackContent $content';
        return $content->getData();
    }
 
    public function unserializeContent( $blob, $format = null ) {
        return new FallbackContent( $blob, $this->getModelID() );
    }
 
    public function makeEmptyContent() {
        return $this->unserializeContent( '' );
    }
 
    public function supportsDirectEditing() {
        return false;
    }
 
    protected function fillParserOutput(
        Content $content,
        ContentParseParams $cpoParams,
        ParserOutput &$output
    ) {
        '@phan-var FallbackContent $content';
        $msg = wfMessage( 'unsupported-content-model', [ $content->getModel() ] );
        $html = Html::rawElement( 'div', [ 'class' => 'error' ], $msg->inContentLanguage()->parse() );
        $output->setText( $html );
    }
 
    protected function getSlotDiffRendererInternal( IContextSource $context ) {
        return new UnsupportedSlotDiffRenderer( $context );
    }
}