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<?php
/**
* Base content handler class for flat text contents.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @since 1.34
*
* @file
* @ingroup Content
*/
/**
* Content handler implementation for unknown content.
*
* This can be used to handle content for which no ContentHandler exists on the system,
* perhaps because the extension that provided it has been removed.
*
* @ingroup Content
*/
class UnknownContentHandler extends ContentHandler {
/**
* Constructs an UnknownContentHandler. Since UnknownContentHandler can be registered
* for multiple model IDs on a system, multiple instances of UnknownContentHandler may
* coexist.
*
* To preserve the serialization format of the original content model, it must be supplied
* to the constructor via the $formats parameter. If not given, the default format is
* reported as 'application/octet-stream'.
*
* @param string $modelId
* @param string[]|null $formats
*/
public function __construct( $modelId, $formats = null ) {
parent::__construct(
$modelId,
$formats ?? [
'application/octet-stream',
'application/unknown',
'application/x-binary',
'text/unknown',
'unknown/unknown',
]
);
}
/**
* Returns the content's data as-is.
*
* @param Content $content
* @param string|null $format The serialization format to check
*
* @return mixed
*/
public function serializeContent( Content $content, $format = null ) {
/** @var UnknownContent $content */
'@phan-var UnknownContent $content';
return $content->getData();
}
/**
* Constructs an UnknownContent instance wrapping the given data.
*
* @since 1.21
*
* @param string $blob serialized content in an unknown format
* @param string|null $format ignored
*
* @return Content The UnknownContent object wrapping $data
*/
public function unserializeContent( $blob, $format = null ) {
return new UnknownContent( $blob, $this->getModelID() );
}
/**
* Creates an empty UnknownContent object.
*
* @since 1.21
*
* @return Content A new UnknownContent object with empty text.
*/
public function makeEmptyContent() {
return $this->unserializeContent( '' );
}
/**
* @return false
*/
public function supportsDirectEditing() {
return false;
}
/**
* @param IContextSource $context
*
* @return SlotDiffRenderer
*/
protected function getSlotDiffRendererInternal( IContextSource $context ) {
return new UnsupportedSlotDiffRenderer( $context );
}
}
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