Your IP : 172.70.127.67
<?php
/**
* Implements Special:ComparePages
*
* Copyright © 2010 Derk-Jan Hartman <hartman@videolan.org>
*
* 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
* @ingroup SpecialPage
*/
/**
* Implements Special:ComparePages
*
* @ingroup SpecialPage
*/
class SpecialComparePages extends SpecialPage {
// Stored objects
protected $opts, $skin;
// Some internal settings
protected $showNavigation = false;
public function __construct() {
parent::__construct( 'ComparePages' );
}
/**
* Show a form for filtering namespace and username
*
* @param $par String
* @return String
*/
public function execute( $par ) {
$this->setHeaders();
$this->outputHeader();
$form = new HTMLForm( array(
'Page1' => array(
'type' => 'text',
'name' => 'page1',
'label-message' => 'compare-page1',
'size' => '40',
'section' => 'page1',
'validation-callback' => array( $this, 'checkExistingTitle' ),
),
'Revision1' => array(
'type' => 'int',
'name' => 'rev1',
'label-message' => 'compare-rev1',
'size' => '8',
'section' => 'page1',
'validation-callback' => array( $this, 'checkExistingRevision' ),
),
'Page2' => array(
'type' => 'text',
'name' => 'page2',
'label-message' => 'compare-page2',
'size' => '40',
'section' => 'page2',
'validation-callback' => array( $this, 'checkExistingTitle' ),
),
'Revision2' => array(
'type' => 'int',
'name' => 'rev2',
'label-message' => 'compare-rev2',
'size' => '8',
'section' => 'page2',
'validation-callback' => array( $this, 'checkExistingRevision' ),
),
'Action' => array(
'type' => 'hidden',
'name' => 'action',
),
'Diffonly' => array(
'type' => 'hidden',
'name' => 'diffonly',
),
'Unhide' => array(
'type' => 'hidden',
'name' => 'unhide',
),
), $this->getContext(), 'compare' );
$form->setSubmitTextMsg( 'compare-submit' );
$form->suppressReset();
$form->setMethod( 'get' );
$form->setSubmitCallback( array( __CLASS__, 'showDiff' ) );
$form->loadData();
$form->displayForm( '' );
$form->trySubmit();
}
public static function showDiff( $data, HTMLForm $form ) {
$rev1 = self::revOrTitle( $data['Revision1'], $data['Page1'] );
$rev2 = self::revOrTitle( $data['Revision2'], $data['Page2'] );
if( $rev1 && $rev2 ) {
$revision = Revision::newFromId( $rev1 );
if ( $revision ) { // NOTE: $rev1 was already checked, should exist.
$contentHandler = $revision->getContentHandler();
$de = $contentHandler->createDifferenceEngine( $form->getContext(),
$rev1,
$rev2,
null, // rcid
( $data['Action'] == 'purge' ),
( $data['Unhide'] == '1' )
);
$de->showDiffPage( true );
}
}
}
public static function revOrTitle( $revision, $title ) {
if( $revision ) {
return $revision;
} elseif( $title ) {
$title = Title::newFromText( $title );
if( $title instanceof Title ) {
return $title->getLatestRevID();
}
}
return null;
}
public function checkExistingTitle( $value, $alldata ) {
if ( $value === '' || $value === null ) {
return true;
}
$title = Title::newFromText( $value );
if ( !$title instanceof Title ) {
return $this->msg( 'compare-invalid-title' )->parseAsBlock();
}
if ( !$title->exists() ) {
return $this->msg( 'compare-title-not-exists' )->parseAsBlock();
}
return true;
}
public function checkExistingRevision( $value, $alldata ) {
if ( $value === '' || $value === null ) {
return true;
}
$revision = Revision::newFromId( $value );
if ( $revision === null ) {
return $this->msg( 'compare-revision-not-exists' )->parseAsBlock();
}
return true;
}
protected function getGroupName() {
return 'pagetools';
}
}