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| 1 | <?php |
| 2 | /** |
| 3 | * Base classes for actions done on pages. |
| 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 |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
| 18 | * |
| 19 | * @file |
| 20 | * @ingroup Actions |
| 21 | */ |
| 22 | |
| 23 | namespace MediaWiki\Actions; |
| 24 | |
| 25 | /** |
| 26 | * An action which just does something, without showing a form first. |
| 27 | * |
| 28 | * @stable to extend |
| 29 | * |
| 30 | * @ingroup Actions |
| 31 | */ |
| 32 | abstract class FormlessAction extends Action { |
| 33 | |
| 34 | /** |
| 35 | * Show something on GET request. |
| 36 | * @return string|null Will be added to the HTMLForm if present, or just added to the |
| 37 | * output if not. Return null to not add anything |
| 38 | */ |
| 39 | abstract public function onView(); |
| 40 | |
| 41 | /** |
| 42 | * @stable to override |
| 43 | */ |
| 44 | public function show() { |
| 45 | $this->setHeaders(); |
| 46 | |
| 47 | // This will throw exceptions if there's a problem |
| 48 | $this->checkCanExecute( $this->getUser() ); |
| 49 | |
| 50 | $this->getOutput()->addHTML( $this->onView() ); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | /** @deprecated class alias since 1.44 */ |
| 55 | class_alias( FormlessAction::class, 'FormlessAction' ); |