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| 1 | <?php |
| 2 | /** |
| 3 | * Implements Special:Unusedimages |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | * @ingroup SpecialPage |
| 22 | */ |
| 23 | |
| 24 | namespace MediaWiki\Specials; |
| 25 | |
| 26 | use MediaWiki\MainConfigNames; |
| 27 | use MediaWiki\SpecialPage\ImageQueryPage; |
| 28 | use Wikimedia\Rdbms\IConnectionProvider; |
| 29 | |
| 30 | /** |
| 31 | * A special page that lists unused images |
| 32 | * |
| 33 | * @ingroup SpecialPage |
| 34 | */ |
| 35 | class SpecialUnusedImages extends ImageQueryPage { |
| 36 | |
| 37 | /** |
| 38 | * @param IConnectionProvider $dbProvider |
| 39 | */ |
| 40 | public function __construct( IConnectionProvider $dbProvider ) { |
| 41 | parent::__construct( 'Unusedimages' ); |
| 42 | $this->setDatabaseProvider( $dbProvider ); |
| 43 | } |
| 44 | |
| 45 | public function isExpensive() { |
| 46 | return true; |
| 47 | } |
| 48 | |
| 49 | protected function sortDescending() { |
| 50 | return false; |
| 51 | } |
| 52 | |
| 53 | public function isSyndicated() { |
| 54 | return false; |
| 55 | } |
| 56 | |
| 57 | public function getQueryInfo() { |
| 58 | $retval = [ |
| 59 | 'tables' => [ 'image', 'imagelinks' ], |
| 60 | 'fields' => [ |
| 61 | 'namespace' => NS_FILE, |
| 62 | 'title' => 'img_name', |
| 63 | 'value' => 'img_timestamp', |
| 64 | ], |
| 65 | 'conds' => [ 'il_to' => null ], |
| 66 | 'join_conds' => [ 'imagelinks' => [ 'LEFT JOIN', 'il_to = img_name' ] ] |
| 67 | ]; |
| 68 | |
| 69 | if ( $this->getConfig()->get( MainConfigNames::CountCategorizedImagesAsUsed ) ) { |
| 70 | // Order is significant |
| 71 | $retval['tables'] = [ 'image', 'page', 'categorylinks', |
| 72 | 'imagelinks' ]; |
| 73 | $retval['conds']['page_namespace'] = NS_FILE; |
| 74 | $retval['conds']['cl_from'] = null; |
| 75 | $retval['conds'][] = 'img_name = page_title'; |
| 76 | $retval['join_conds']['categorylinks'] = [ |
| 77 | 'LEFT JOIN', 'cl_from = page_id' ]; |
| 78 | $retval['join_conds']['imagelinks'] = [ |
| 79 | 'LEFT JOIN', 'il_to = page_title' ]; |
| 80 | } |
| 81 | |
| 82 | return $retval; |
| 83 | } |
| 84 | |
| 85 | public function usesTimestamps() { |
| 86 | return true; |
| 87 | } |
| 88 | |
| 89 | protected function getPageHeader() { |
| 90 | if ( $this->getConfig()->get( MainConfigNames::CountCategorizedImagesAsUsed ) ) { |
| 91 | return $this->msg( |
| 92 | 'unusedimagestext-categorizedimgisused' |
| 93 | )->parseAsBlock(); |
| 94 | } |
| 95 | return $this->msg( 'unusedimagestext' )->parseAsBlock(); |
| 96 | } |
| 97 | |
| 98 | protected function getGroupName() { |
| 99 | return 'maintenance'; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Retain the old class name for backwards compatibility. |
| 105 | * @deprecated since 1.41 |
| 106 | */ |
| 107 | class_alias( SpecialUnusedImages::class, 'SpecialUnusedImages' ); |