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<?php
/**
* 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
*
* @file
*/
namespace MediaWiki\Specials;
use MediaWiki\HTMLForm\HTMLForm;
use MediaWiki\SpecialPage\RedirectSpecialPage;
use MediaWiki\Title\Title;
/**
* Redirect from Special:Diff/### to index.php?diff=### and
* from Special:Diff/###/### to index.php?oldid=###&diff=###.
*
* All of the following are valid usages:
* - [[Special:Diff/12345]] (diff of a revision with the previous one)
* - [[Special:Diff/12345/prev]] (diff of a revision with the previous one as well)
* - [[Special:Diff/12345/next]] (diff of a revision with the next one)
* - [[Special:Diff/12345/cur]] (diff of a revision with the latest one of that page)
* - [[Special:Diff/12345/98765]] (diff between arbitrary two revisions)
*
* @ingroup SpecialPage
* @since 1.23
*/
class SpecialDiff extends RedirectSpecialPage {
public function __construct() {
parent::__construct( 'Diff' );
$this->mAllowedRedirectParams = [];
}
/**
* @param string|null $subpage
* @return Title|bool
*/
public function getRedirect( $subpage ) {
$parts = $subpage !== null ? explode( '/', $subpage ) : [];
// Try to parse the values given, generating somewhat pretty URLs if possible
if ( count( $parts ) === 1 && $parts[0] !== '' ) {
$this->mAddedRedirectParams['diff'] = $parts[0];
} elseif ( count( $parts ) === 2 ) {
$this->mAddedRedirectParams['oldid'] = $parts[0];
$this->mAddedRedirectParams['diff'] = $parts[1];
} else {
return false;
}
return true;
}
protected function showNoRedirectPage() {
$this->addHelpLink( 'Help:Diff' );
$this->setHeaders();
$this->outputHeader();
$this->showForm();
}
private function showForm() {
$form = HTMLForm::factory( 'ooui', [
'oldid' => [
'name' => 'oldid',
'type' => 'int',
'label-message' => 'diff-form-oldid',
],
'diff' => [
'name' => 'diff',
// FIXME Set the type for the other field to int - T256425
'type' => 'selectorother',
'options-messages' => [
'diff-form-other-revid' => 'other',
'last' => 'prev',
'cur' => 'cur',
'next' => 'next',
],
'label-message' => 'diff-form-revid',
// Remove validation callback when using int type - T256425
'validation-callback' => function ( $value ) {
$value = trim( $value ?? '' );
if ( preg_match( '/^\d*$/', $value )
|| in_array( $value, [ 'prev', 'cur', 'next' ], true )
) {
return true;
}
return $this->msg( 'diff-form-error-revid' );
},
],
], $this->getContext(), 'diff-form' );
$form->setSubmitTextMsg( 'diff-form-submit' );
$form->setSubmitCallback( [ $this, 'onFormSubmit' ] );
$form->show();
}
public function onFormSubmit( $formData ) {
$params = [];
if ( $formData['oldid'] ) {
$params[] = $formData['oldid'];
}
if ( $formData['diff'] ) {
// Remove trim when using int type - T256425
$params[] = trim( $formData['diff'] );
}
$title = $this->getPageTitle( $params ? implode( '/', $params ) : null );
$url = $title->getFullUrlForRedirect();
$this->getOutput()->redirect( $url );
}
public function getDescription() {
// 'diff' message is in lowercase, using own message
return $this->msg( 'diff-form' );
}
public function getName() {
return 'diff-form';
}
public function isListed() {
return true;
}
protected function getGroupName() {
return 'redirects';
}
}
/** @deprecated class alias since 1.41 */
class_alias( SpecialDiff::class, 'SpecialDiff' );