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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle 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 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Fake question behaviour that is used when the actual behaviour was not
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* available.
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*
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* @package qbehaviour
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* @subpackage missing
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* @copyright 2009 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Fake question behaviour that is used when the actual behaviour
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* is not available.
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*
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* Imagine, for example, that a quiz attempt has been restored from another
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* Moodle site with more behaviours installed, or a behaviour
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* that used to be available in this site has been uninstalled. Obviously all we
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* can do is have some code to prevent fatal errors.
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*
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* The approach we take is: The rendering code is still implemented, as far as
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* possible. A warning is shown that behaviour specific bits may be missing.
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* Any attempt to process anything causes an exception to be thrown.
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*
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* @copyright 2009 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class qbehaviour_missing extends question_behaviour {
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public function is_compatible_question(question_definition $question) {
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return true;
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}
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public function summarise_action(question_attempt_step $step) {
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return '';
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}
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public function init_first_step(question_attempt_step $step, $variant) {
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throw new coding_exception('The behaviour used for this question is not available. ' .
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'No processing is possible.');
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}
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public function process_action(question_attempt_pending_step $pendingstep) {
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throw new coding_exception('The behaviour used for this question is not available. ' .
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'No processing is possible.');
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}
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public function get_min_fraction() {
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throw new coding_exception('The behaviour used for this question is not available. ' .
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'No processing is possible.');
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}
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public function get_max_fraction() {
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throw new coding_exception('The behaviour used for this question is not available. ' .
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'No processing is possible.');
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}
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}
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