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<?php
class SpecialChangeContentModel extends FormSpecialPage {
public function __construct() {
parent::__construct( 'ChangeContentModel', 'editcontentmodel' );
}
/**
* @var Title|null
*/
private $title;
/**
* @var Revision|bool|null
*
* A Revision object, false if no revision exists, null if not loaded yet
*/
private $oldRevision;
protected function setParameter( $par ) {
$par = $this->getRequest()->getVal( 'pagetitle', $par );
$title = Title::newFromText( $par );
if ( $title ) {
$this->title = $title;
$this->par = $title->getPrefixedText();
} else {
$this->par = '';
}
}
protected function getDisplayFormat() {
return 'ooui';
}
protected function alterForm( HTMLForm $form ) {
if ( !$this->title ) {
$form->setMethod( 'GET' );
}
}
public function validateTitle( $title ) {
if ( !$title ) {
// No form input yet
return true;
}
// Already validated by HTMLForm, but if not, throw
// and exception instead of a fatal
$titleObj = Title::newFromTextThrow( $title );
$this->oldRevision = Revision::newFromTitle( $titleObj ) ?: false;
if ( $this->oldRevision ) {
$oldContent = $this->oldRevision->getContent();
if ( !$oldContent->getContentHandler()->supportsDirectEditing() ) {
return $this->msg( 'changecontentmodel-nodirectediting' )
->params( ContentHandler::getLocalizedName( $oldContent->getModel() ) )
->escaped();
}
}
return true;
}
protected function getFormFields() {
$that = $this;
$fields = array(
'pagetitle' => array(
'type' => 'title',
'creatable' => true,
'name' => 'pagetitle',
'default' => $this->par,
'label-message' => 'changecontentmodel-title-label',
'validation-callback' => array( $this, 'validateTitle' ),
),
);
if ( $this->title ) {
$fields['pagetitle']['readonly'] = true;
$fields += array(
'model' => array(
'type' => 'select',
'name' => 'model',
'options' => $this->getOptionsForTitle( $this->title ),
'label-message' => 'changecontentmodel-model-label'
),
'reason' => array(
'type' => 'text',
'name' => 'reason',
'validation-callback' => function( $reason ) use ( $that ) {
$match = EditPage::matchSummarySpamRegex( $reason );
if ( $match ) {
return $that->msg( 'spamprotectionmatch', $match )->parse();
}
return true;
},
'label-message' => 'changecontentmodel-reason-label',
),
);
}
return $fields;
}
private function getOptionsForTitle( Title $title = null ) {
$models = ContentHandler::getContentModels();
$options = array();
foreach ( $models as $model ) {
$handler = ContentHandler::getForModelID( $model );
if ( !$handler->supportsDirectEditing() ) {
continue;
}
if ( $title ) {
if ( $title->getContentModel() === $model ) {
continue;
}
if ( !$handler->canBeUsedOn( $title ) ) {
continue;
}
}
$options[ContentHandler::getLocalizedName( $model )] = $model;
}
return $options;
}
public function onSubmit( array $data ) {
global $wgContLang;
if ( $data['pagetitle'] === '' ) {
// Initial form view of special page, pass
return false;
}
// At this point, it has to be a POST request. This is enforced by HTMLForm,
// but lets be safe verify that.
if ( !$this->getRequest()->wasPosted() ) {
throw new RuntimeException( "Form submission was not POSTed" );
}
$this->title = Title::newFromText( $data['pagetitle' ] );
$user = $this->getUser();
// Check permissions and make sure the user has permission to edit the specific page
$errors = $this->title->getUserPermissionsErrors( 'editcontentmodel', $user );
$errors = wfMergeErrorArrays( $errors, $this->title->getUserPermissionsErrors( 'edit', $user ) );
if ( $errors ) {
$out = $this->getOutput();
$wikitext = $out->formatPermissionsErrorMessage( $errors );
// Hack to get our wikitext parsed
return Status::newFatal( new RawMessage( '$1', array( $wikitext ) ) );
}
$page = WikiPage::factory( $this->title );
if ( $this->oldRevision === null ) {
$this->oldRevision = $page->getRevision() ?: false;
}
$oldModel = $this->title->getContentModel();
if ( $this->oldRevision ) {
$oldContent = $this->oldRevision->getContent();
try {
$newContent = ContentHandler::makeContent(
$oldContent->getNativeData(), $this->title, $data['model']
);
} catch ( MWException $e ) {
return Status::newFatal(
$this->msg( 'changecontentmodel-cannot-convert' )
->params(
$this->title->getPrefixedText(),
ContentHandler::getLocalizedName( $data['model'] )
)
);
}
} else {
// Page doesn't exist, create an empty content object
$newContent = ContentHandler::getForModelID( $data['model'] )->makeEmptyContent();
}
$flags = $this->oldRevision ? EDIT_UPDATE : EDIT_NEW;
if ( $user->isAllowed( 'bot' ) ) {
$flags |= EDIT_FORCE_BOT;
}
$log = new ManualLogEntry( 'contentmodel', 'change' );
$log->setPerformer( $user );
$log->setTarget( $this->title );
$log->setComment( $data['reason'] );
$log->setParameters( array(
'4::oldmodel' => $oldModel,
'5::newmodel' => $data['model']
) );
$formatter = LogFormatter::newFromEntry( $log );
$formatter->setContext( RequestContext::newExtraneousContext( $this->title ) );
$reason = $formatter->getPlainActionText();
if ( $data['reason'] !== '' ) {
$reason .= $this->msg( 'colon-separator' )->inContentLanguage()->text() . $data['reason'];
}
# Truncate for whole multibyte characters.
$reason = $wgContLang->truncate( $reason, 255 );
$status = $page->doEditContent(
$newContent,
$reason,
$flags,
$this->oldRevision ? $this->oldRevision->getId() : false,
$user
);
if ( !$status->isOK() ) {
return $status;
}
$logid = $log->insert();
$log->publish( $logid );
return $status;
}
public function onSuccess() {
$out = $this->getOutput();
$out->setPageTitle( $this->msg( 'changecontentmodel-success-title' ) );
$out->addWikiMsg( 'changecontentmodel-success-text', $this->title );
}
}
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