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<?php
/**
* Implements Special:Unusedimages
*
* 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
*/
/**
* A special page that lists unused images
*
* @ingroup SpecialPage
*/
class UnusedimagesPage extends ImageQueryPage {
function __construct( $name = 'Unusedimages' ) {
parent::__construct( $name );
}
function isExpensive() {
return true;
}
function sortDescending() {
return false;
}
function isSyndicated() {
return false;
}
function getQueryInfo() {
global $wgCountCategorizedImagesAsUsed;
$retval = array (
'tables' => array ( 'image', 'imagelinks' ),
'fields' => array ( 'namespace' => NS_FILE,
'title' => 'img_name',
'value' => 'img_timestamp',
'img_user', 'img_user_text',
'img_description' ),
'conds' => array ( 'il_to IS NULL' ),
'join_conds' => array ( 'imagelinks' => array (
'LEFT JOIN', 'il_to = img_name' ) )
);
if ( $wgCountCategorizedImagesAsUsed ) {
// Order is significant
$retval['tables'] = array ( 'image', 'page', 'categorylinks',
'imagelinks' );
$retval['conds']['page_namespace'] = NS_FILE;
$retval['conds'][] = 'cl_from IS NULL';
$retval['conds'][] = 'img_name = page_title';
$retval['join_conds']['categorylinks'] = array (
'LEFT JOIN', 'cl_from = page_id' );
$retval['join_conds']['imagelinks'] = array (
'LEFT JOIN', 'il_to = page_title' );
}
return $retval;
}
function usesTimestamps() {
return true;
}
function getPageHeader() {
return $this->msg( 'unusedimagestext' )->parseAsBlock();
}
protected function getGroupName() {
return 'maintenance';
}
}
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