45 lines
1.4 KiB
PHP
45 lines
1.4 KiB
PHP
<?php
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/**
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* Base classes for actions done on pages.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* @file
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* @ingroup Actions
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*/
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/**
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* An action which just does something, without showing a form first.
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*
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* @ingroup Actions
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*/
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abstract class FormlessAction extends Action {
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/**
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* Show something on GET request.
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* @return string|null Will be added to the HTMLForm if present, or just added to the
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* output if not. Return null to not add anything
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*/
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abstract public function onView();
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public function show() {
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$this->setHeaders();
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// This will throw exceptions if there's a problem
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$this->checkCanExecute( $this->getUser() );
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$this->getOutput()->addHTML( $this->onView() );
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}
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}
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