Current Path : C:/Users/Mahmood/Desktop/moodle8/question/ |
Current File : C:/Users/Mahmood/Desktop/moodle8/question/previewlib.php |
<?php // This file is part of Moodle - http://moodle.org/ // // Moodle 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 3 of the License, or // (at your option) any later version. // // Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>. /** * Library functions used by question/preview.php. * * @package moodlecore * @subpackage questionengine * @copyright 2010 The Open University * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ defined('MOODLE_INTERNAL') || die(); require_once($CFG->libdir . '/formslib.php'); /** * Settings form for the preview options. * * @copyright 2009 The Open University * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class preview_options_form extends moodleform { public function definition() { $mform = $this->_form; $hiddenofvisible = array( question_display_options::HIDDEN => get_string('notshown', 'question'), question_display_options::VISIBLE => get_string('shown', 'question'), ); $mform->addElement('header', 'attemptoptionsheader', get_string('attemptoptions', 'question')); $behaviours = question_engine::get_behaviour_options( $this->_customdata['quba']->get_preferred_behaviour()); $mform->addElement('select', 'behaviour', get_string('howquestionsbehave', 'question'), $behaviours); $mform->addHelpButton('behaviour', 'howquestionsbehave', 'question'); $mform->addElement('float', 'maxmark', get_string('markedoutof', 'question'), array('size' => '5')); if ($this->_customdata['maxvariant'] > 1) { $variants = range(1, $this->_customdata['maxvariant']); $mform->addElement('select', 'variant', get_string('questionvariant', 'question'), array_combine($variants, $variants)); } $mform->setType('variant', PARAM_INT); $mform->addElement('submit', 'saverestart', get_string('restartwiththeseoptions', 'question')); $mform->addElement('header', 'displayoptionsheader', get_string('displayoptions', 'question')); $mform->addElement('select', 'correctness', get_string('whethercorrect', 'question'), $hiddenofvisible); $marksoptions = array( question_display_options::HIDDEN => get_string('notshown', 'question'), question_display_options::MAX_ONLY => get_string('showmaxmarkonly', 'question'), question_display_options::MARK_AND_MAX => get_string('showmarkandmax', 'question'), ); $mform->addElement('select', 'marks', get_string('marks', 'question'), $marksoptions); $mform->addElement('select', 'markdp', get_string('decimalplacesingrades', 'question'), question_engine::get_dp_options()); $mform->addElement('select', 'feedback', get_string('specificfeedback', 'question'), $hiddenofvisible); $mform->addElement('select', 'generalfeedback', get_string('generalfeedback', 'question'), $hiddenofvisible); $mform->addElement('select', 'rightanswer', get_string('rightanswer', 'question'), $hiddenofvisible); $mform->addElement('select', 'history', get_string('responsehistory', 'question'), $hiddenofvisible); $mform->addElement('submit', 'saveupdate', get_string('updatedisplayoptions', 'question')); } } /** * Displays question preview options as default and set the options * Setting default, getting and setting user preferences in question preview options. * * @copyright 2010 The Open University * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class question_preview_options extends question_display_options { /** @var string the behaviour to use for this preview. */ public $behaviour; /** @var number the maximum mark to use for this preview. */ public $maxmark; /** @var int the variant of the question to preview. */ public $variant; /** @var string prefix to append to field names to get user_preference names. */ const OPTIONPREFIX = 'question_preview_options_'; /** * Constructor. */ public function __construct($question) { $this->behaviour = 'deferredfeedback'; $this->maxmark = $question->defaultmark; $this->variant = null; $this->correctness = self::VISIBLE; $this->marks = self::MARK_AND_MAX; $this->markdp = get_config('quiz', 'decimalpoints'); $this->feedback = self::VISIBLE; $this->numpartscorrect = $this->feedback; $this->generalfeedback = self::VISIBLE; $this->rightanswer = self::VISIBLE; $this->history = self::HIDDEN; $this->flags = self::HIDDEN; $this->manualcomment = self::HIDDEN; } /** * @return array names of the options we store in the user preferences table. */ protected function get_user_pref_fields() { return array('behaviour', 'correctness', 'marks', 'markdp', 'feedback', 'generalfeedback', 'rightanswer', 'history'); } /** * @return array names and param types of the options we read from the request. */ protected function get_field_types() { return array( 'behaviour' => PARAM_ALPHA, 'maxmark' => PARAM_LOCALISEDFLOAT, 'variant' => PARAM_INT, 'correctness' => PARAM_BOOL, 'marks' => PARAM_INT, 'markdp' => PARAM_INT, 'feedback' => PARAM_BOOL, 'generalfeedback' => PARAM_BOOL, 'rightanswer' => PARAM_BOOL, 'history' => PARAM_BOOL, ); } /** * Load the value of the options from the user_preferences table. */ public function load_user_defaults() { $defaults = get_config('question_preview'); foreach ($this->get_user_pref_fields() as $field) { $this->$field = get_user_preferences( self::OPTIONPREFIX . $field, $defaults->$field); } $this->numpartscorrect = $this->feedback; } /** * Save a change to the user's preview options to the database. * @param object $newoptions */ public function save_user_preview_options($newoptions) { foreach ($this->get_user_pref_fields() as $field) { if (isset($newoptions->$field)) { set_user_preference(self::OPTIONPREFIX . $field, $newoptions->$field); } } } /** * Set the value of any fields included in the request. */ public function set_from_request() { foreach ($this->get_field_types() as $field => $type) { $this->$field = optional_param($field, $this->$field, $type); } $this->numpartscorrect = $this->feedback; } /** * @return string URL fragment. Parameters needed in the URL when continuing * this preview. */ public function get_url_params() { $params = array(); foreach ($this->get_field_types() as $field => $notused) { if ($field == 'behaviour' || $field == 'maxmark' || is_null($this->$field)) { continue; } $params[$field] = $this->$field; } return $params; } } /** * Called via pluginfile.php -> question_pluginfile to serve files belonging to * a question in a question_attempt when that attempt is a preview. * * @package core_question * @category files * @param stdClass $course course settings object * @param stdClass $context context object * @param string $component the name of the component we are serving files for. * @param string $filearea the name of the file area. * @param int $qubaid the question_usage this image belongs to. * @param int $slot the relevant slot within the usage. * @param array $args the remaining bits of the file path. * @param bool $forcedownload whether the user must be forced to download the file. * @param array $options additional options affecting the file serving * @return bool false if file not found, does not return if found - justsend the file */ function question_preview_question_pluginfile($course, $context, $component, $filearea, $qubaid, $slot, $args, $forcedownload, $fileoptions) { global $USER, $DB, $CFG; list($context, $course, $cm) = get_context_info_array($context->id); require_login($course, false, $cm); $quba = question_engine::load_questions_usage_by_activity($qubaid); if (!question_has_capability_on($quba->get_question($slot), 'use')) { send_file_not_found(); } $options = new question_display_options(); $options->feedback = question_display_options::VISIBLE; $options->numpartscorrect = question_display_options::VISIBLE; $options->generalfeedback = question_display_options::VISIBLE; $options->rightanswer = question_display_options::VISIBLE; $options->manualcomment = question_display_options::VISIBLE; $options->history = question_display_options::VISIBLE; if (!$quba->check_file_access($slot, $options, $component, $filearea, $args, $forcedownload)) { send_file_not_found(); } $fs = get_file_storage(); $relativepath = implode('/', $args); $fullpath = "/{$context->id}/{$component}/{$filearea}/{$relativepath}"; if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) { send_file_not_found(); } send_stored_file($file, 0, 0, $forcedownload, $fileoptions); } /** * The the URL to use for actions relating to this preview. * @param int $questionid the question being previewed. * @param int $qubaid the id of the question usage for this preview. * @param question_preview_options $options the options in use. */ function question_preview_action_url($questionid, $qubaid, question_preview_options $options, $context) { $params = array( 'id' => $questionid, 'previewid' => $qubaid, ); if ($context->contextlevel == CONTEXT_MODULE) { $params['cmid'] = $context->instanceid; } else if ($context->contextlevel == CONTEXT_COURSE) { $params['courseid'] = $context->instanceid; } $params = array_merge($params, $options->get_url_params()); return new moodle_url('/question/preview.php', $params); } /** * The the URL to use for actions relating to this preview. * @param int $questionid the question being previewed. * @param context $context the current moodle context. * @param int $previewid optional previewid to sign post saved previewed answers. */ function question_preview_form_url($questionid, $context, $previewid = null) { $params = array( 'id' => $questionid, ); if ($context->contextlevel == CONTEXT_MODULE) { $params['cmid'] = $context->instanceid; } else if ($context->contextlevel == CONTEXT_COURSE) { $params['courseid'] = $context->instanceid; } if ($previewid) { $params['previewid'] = $previewid; } return new moodle_url('/question/preview.php', $params); } /** * Delete the current preview, if any, and redirect to start a new preview. * @param int $previewid * @param int $questionid * @param object $displayoptions * @param object $context */ function restart_preview($previewid, $questionid, $displayoptions, $context) { global $DB; if ($previewid) { $transaction = $DB->start_delegated_transaction(); question_engine::delete_questions_usage_by_activity($previewid); $transaction->allow_commit(); } redirect(question_preview_url($questionid, $displayoptions->behaviour, $displayoptions->maxmark, $displayoptions, $displayoptions->variant, $context)); }