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-rw-r--r--includes/specials/SpecialChangeContentModel.php223
1 files changed, 223 insertions, 0 deletions
diff --git a/includes/specials/SpecialChangeContentModel.php b/includes/specials/SpecialChangeContentModel.php
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+++ b/includes/specials/SpecialChangeContentModel.php
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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 );
+ }
+}