mirror of
https://github.com/moodle/moodle.git
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483 lines
15 KiB
PHP
483 lines
15 KiB
PHP
<?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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* @package mod
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* @subpackage resource
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* @copyright 2009 Petr Skoda {@link http://skodak.org}
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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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* List of features supported in Resource module
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* @param string $feature FEATURE_xx constant for requested feature
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* @return mixed True if module supports feature, false if not, null if doesn't know
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*/
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function resource_supports($feature) {
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switch($feature) {
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case FEATURE_MOD_ARCHETYPE: return MOD_ARCHETYPE_RESOURCE;
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case FEATURE_GROUPS: return false;
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case FEATURE_GROUPINGS: return false;
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case FEATURE_GROUPMEMBERSONLY: return true;
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case FEATURE_MOD_INTRO: return true;
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case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
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case FEATURE_GRADE_HAS_GRADE: return false;
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case FEATURE_GRADE_OUTCOMES: return false;
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case FEATURE_BACKUP_MOODLE2: return true;
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case FEATURE_SHOW_DESCRIPTION: return true;
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default: return null;
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}
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}
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/**
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* Returns all other caps used in module
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* @return array
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*/
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function resource_get_extra_capabilities() {
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return array('moodle/site:accessallgroups');
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}
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/**
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* This function is used by the reset_course_userdata function in moodlelib.
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* @param $data the data submitted from the reset course.
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* @return array status array
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*/
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function resource_reset_userdata($data) {
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return array();
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}
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/**
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* List of view style log actions
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* @return array
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*/
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function resource_get_view_actions() {
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return array('view','view all');
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}
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/**
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* List of update style log actions
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* @return array
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*/
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function resource_get_post_actions() {
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return array('update', 'add');
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}
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/**
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* Add resource instance.
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* @param object $data
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* @param object $mform
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* @return int new resource instance id
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*/
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function resource_add_instance($data, $mform) {
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global $CFG, $DB;
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require_once("$CFG->libdir/resourcelib.php");
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$cmid = $data->coursemodule;
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$data->timemodified = time();
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resource_set_display_options($data);
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$data->id = $DB->insert_record('resource', $data);
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// we need to use context now, so we need to make sure all needed info is already in db
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$DB->set_field('course_modules', 'instance', $data->id, array('id'=>$cmid));
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resource_set_mainfile($data);
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return $data->id;
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}
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/**
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* Update resource instance.
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* @param object $data
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* @param object $mform
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* @return bool true
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*/
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function resource_update_instance($data, $mform) {
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global $CFG, $DB;
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require_once("$CFG->libdir/resourcelib.php");
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$data->timemodified = time();
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$data->id = $data->instance;
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$data->revision++;
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resource_set_display_options($data);
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$DB->update_record('resource', $data);
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resource_set_mainfile($data);
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return true;
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}
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/**
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* Updates display options based on form input.
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*
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* Shared code used by resource_add_instance and resource_update_instance.
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*
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* @param object $data Data object
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*/
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function resource_set_display_options($data) {
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$displayoptions = array();
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if ($data->display == RESOURCELIB_DISPLAY_POPUP) {
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$displayoptions['popupwidth'] = $data->popupwidth;
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$displayoptions['popupheight'] = $data->popupheight;
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}
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if (in_array($data->display, array(RESOURCELIB_DISPLAY_AUTO, RESOURCELIB_DISPLAY_EMBED, RESOURCELIB_DISPLAY_FRAME))) {
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$displayoptions['printheading'] = (int)!empty($data->printheading);
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$displayoptions['printintro'] = (int)!empty($data->printintro);
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}
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if (!empty($data->showsize)) {
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$displayoptions['showsize'] = 1;
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}
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if (!empty($data->showtype)) {
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$displayoptions['showtype'] = 1;
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}
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$data->displayoptions = serialize($displayoptions);
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}
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/**
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* Delete resource instance.
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* @param int $id
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* @return bool true
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*/
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function resource_delete_instance($id) {
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global $DB;
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if (!$resource = $DB->get_record('resource', array('id'=>$id))) {
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return false;
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}
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// note: all context files are deleted automatically
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$DB->delete_records('resource', array('id'=>$resource->id));
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return true;
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}
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/**
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* Return use outline
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* @param object $course
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* @param object $user
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* @param object $mod
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* @param object $resource
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* @return object|null
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*/
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function resource_user_outline($course, $user, $mod, $resource) {
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global $DB;
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if ($logs = $DB->get_records('log', array('userid'=>$user->id, 'module'=>'resource',
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'action'=>'view', 'info'=>$resource->id), 'time ASC')) {
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$numviews = count($logs);
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$lastlog = array_pop($logs);
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$result = new stdClass();
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$result->info = get_string('numviews', '', $numviews);
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$result->time = $lastlog->time;
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return $result;
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}
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return NULL;
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}
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/**
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* Return use complete
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* @param object $course
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* @param object $user
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* @param object $mod
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* @param object $resource
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*/
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function resource_user_complete($course, $user, $mod, $resource) {
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global $CFG, $DB;
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if ($logs = $DB->get_records('log', array('userid'=>$user->id, 'module'=>'resource',
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'action'=>'view', 'info'=>$resource->id), 'time ASC')) {
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$numviews = count($logs);
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$lastlog = array_pop($logs);
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$strmostrecently = get_string('mostrecently');
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$strnumviews = get_string('numviews', '', $numviews);
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echo "$strnumviews - $strmostrecently ".userdate($lastlog->time);
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} else {
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print_string('neverseen', 'resource');
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}
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}
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/**
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* Returns the users with data in one resource
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*
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* @todo: deprecated - to be deleted in 2.2
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*
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* @param int $resourceid
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* @return bool false
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*/
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function resource_get_participants($resourceid) {
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return false;
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}
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/**
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* Given a course_module object, this function returns any
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* "extra" information that may be needed when printing
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* this activity in a course listing.
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*
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* See {@link get_array_of_activities()} in course/lib.php
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*
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* @param cm_info $coursemodule
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* @return cached_cm_info info
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*/
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function resource_get_coursemodule_info($coursemodule) {
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global $CFG, $DB;
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require_once("$CFG->libdir/filelib.php");
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require_once("$CFG->dirroot/mod/resource/locallib.php");
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require_once($CFG->libdir.'/completionlib.php');
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$context = get_context_instance(CONTEXT_MODULE, $coursemodule->id);
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if (!$resource = $DB->get_record('resource', array('id'=>$coursemodule->instance),
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'id, name, display, displayoptions, tobemigrated, revision, intro, introformat')) {
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return NULL;
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}
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$info = new cached_cm_info();
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$info->name = $resource->name;
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if ($coursemodule->showdescription) {
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// Convert intro to html. Do not filter cached version, filters run at display time.
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$info->content = format_module_intro('resource', $resource, $coursemodule->id, false);
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}
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if ($resource->tobemigrated) {
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$info->icon ='i/cross_red_big';
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return $info;
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}
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$fs = get_file_storage();
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$files = $fs->get_area_files($context->id, 'mod_resource', 'content', 0, 'sortorder DESC, id ASC', false); // TODO: this is not very efficient!!
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if (count($files) >= 1) {
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$mainfile = reset($files);
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$info->icon = file_extension_icon($mainfile->get_filename());
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$resource->mainfile = $mainfile->get_filename();
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}
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$display = resource_get_final_display_type($resource);
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if ($display == RESOURCELIB_DISPLAY_POPUP) {
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$fullurl = "$CFG->wwwroot/mod/resource/view.php?id=$coursemodule->id&redirect=1";
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$options = empty($resource->displayoptions) ? array() : unserialize($resource->displayoptions);
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$width = empty($options['popupwidth']) ? 620 : $options['popupwidth'];
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$height = empty($options['popupheight']) ? 450 : $options['popupheight'];
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$wh = "width=$width,height=$height,toolbar=no,location=no,menubar=no,copyhistory=no,status=no,directories=no,scrollbars=yes,resizable=yes";
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$info->onclick = "window.open('$fullurl', '', '$wh'); return false;";
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} else if ($display == RESOURCELIB_DISPLAY_NEW) {
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$fullurl = "$CFG->wwwroot/mod/resource/view.php?id=$coursemodule->id&redirect=1";
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$info->onclick = "window.open('$fullurl'); return false;";
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}
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// If any optional extra details are turned on, store in custom data
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$info->customdata = resource_get_optional_details($resource, $coursemodule);
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return $info;
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}
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/**
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* Called when viewing course page. Shows extra details after the link if
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* enabled.
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*
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* @param cm_info $cm Course module information
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*/
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function resource_cm_info_view(cm_info $cm) {
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$details = $cm->get_custom_data();
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if ($details) {
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$cm->set_after_link(' ' . html_writer::tag('span', $details,
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array('class' => 'resourcelinkdetails')));
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}
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}
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/**
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* Lists all browsable file areas
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* @param object $course
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* @param object $cm
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* @param object $context
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* @return array
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*/
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function resource_get_file_areas($course, $cm, $context) {
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$areas = array();
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$areas['content'] = get_string('resourcecontent', 'resource');
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return $areas;
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}
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/**
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* File browsing support for resource module content area.
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* @param object $browser
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* @param object $areas
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* @param object $course
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* @param object $cm
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* @param object $context
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* @param string $filearea
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* @param int $itemid
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* @param string $filepath
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* @param string $filename
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* @return object file_info instance or null if not found
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*/
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function resource_get_file_info($browser, $areas, $course, $cm, $context, $filearea, $itemid, $filepath, $filename) {
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global $CFG;
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if (!has_capability('moodle/course:managefiles', $context)) {
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// students can not peak here!
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return null;
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}
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$fs = get_file_storage();
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if ($filearea === 'content') {
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$filepath = is_null($filepath) ? '/' : $filepath;
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$filename = is_null($filename) ? '.' : $filename;
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$urlbase = $CFG->wwwroot.'/pluginfile.php';
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if (!$storedfile = $fs->get_file($context->id, 'mod_resource', 'content', 0, $filepath, $filename)) {
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if ($filepath === '/' and $filename === '.') {
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$storedfile = new virtual_root_file($context->id, 'mod_resource', 'content', 0);
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} else {
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// not found
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return null;
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}
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}
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require_once("$CFG->dirroot/mod/resource/locallib.php");
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return new resource_content_file_info($browser, $context, $storedfile, $urlbase, $areas[$filearea], true, true, true, false);
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}
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// note: resource_intro handled in file_browser automatically
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return null;
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}
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/**
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* Serves the resource files.
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* @param object $course
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* @param object $cm
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* @param object $context
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* @param string $filearea
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* @param array $args
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* @param bool $forcedownload
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* @return bool false if file not found, does not return if found - just send the file
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*/
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function resource_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload) {
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global $CFG, $DB;
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require_once("$CFG->libdir/resourcelib.php");
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if ($context->contextlevel != CONTEXT_MODULE) {
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return false;
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}
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require_course_login($course, true, $cm);
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if (!has_capability('mod/resource:view', $context)) {
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return false;
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}
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if ($filearea !== 'content') {
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// intro is handled automatically in pluginfile.php
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return false;
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}
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array_shift($args); // ignore revision - designed to prevent caching problems only
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$fs = get_file_storage();
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$relativepath = implode('/', $args);
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$fullpath = rtrim("/$context->id/mod_resource/$filearea/0/$relativepath", '/');
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do {
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if (!$file = $fs->get_file_by_hash(sha1($fullpath))) {
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if ($fs->get_file_by_hash(sha1("$fullpath/."))) {
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if ($file = $fs->get_file_by_hash(sha1("$fullpath/index.htm"))) {
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break;
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}
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if ($file = $fs->get_file_by_hash(sha1("$fullpath/index.html"))) {
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break;
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}
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if ($file = $fs->get_file_by_hash(sha1("$fullpath/Default.htm"))) {
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break;
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}
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}
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$resource = $DB->get_record('resource', array('id'=>$cm->instance), 'id, legacyfiles', MUST_EXIST);
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if ($resource->legacyfiles != RESOURCELIB_LEGACYFILES_ACTIVE) {
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return false;
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}
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if (!$file = resourcelib_try_file_migration('/'.$relativepath, $cm->id, $cm->course, 'mod_resource', 'content', 0)) {
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return false;
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}
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// file migrate - update flag
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$resource->legacyfileslast = time();
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$DB->update_record('resource', $resource);
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}
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} while (false);
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// should we apply filters?
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$mimetype = $file->get_mimetype();
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if ($mimetype === 'text/html' or $mimetype === 'text/plain') {
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$filter = $DB->get_field('resource', 'filterfiles', array('id'=>$cm->instance));
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$CFG->embeddedsoforcelinktarget = true;
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} else {
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$filter = 0;
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}
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// finally send the file
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send_stored_file($file, 86400, $filter, $forcedownload);
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}
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/**
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* Return a list of page types
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* @param string $pagetype current page type
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* @param stdClass $parentcontext Block's parent context
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* @param stdClass $currentcontext Current context of block
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*/
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function resource_page_type_list($pagetype, $parentcontext, $currentcontext) {
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$module_pagetype = array('mod-resource-*'=>get_string('page-mod-resource-x', 'resource'));
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return $module_pagetype;
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}
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/**
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* Export file resource contents
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*
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* @return array of file content
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*/
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function resource_export_contents($cm, $baseurl) {
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global $CFG, $DB;
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$contents = array();
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$context = get_context_instance(CONTEXT_MODULE, $cm->id);
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$resource = $DB->get_record('resource', array('id'=>$cm->instance), '*', MUST_EXIST);
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$fs = get_file_storage();
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$files = $fs->get_area_files($context->id, 'mod_resource', 'content', 0, 'sortorder DESC, id ASC', false);
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foreach ($files as $fileinfo) {
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$file = array();
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$file['type'] = 'file';
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$file['filename'] = $fileinfo->get_filename();
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$file['filepath'] = $fileinfo->get_filepath();
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$file['filesize'] = $fileinfo->get_filesize();
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$file['fileurl'] = file_encode_url("$CFG->wwwroot/" . $baseurl, '/'.$context->id.'/mod_resource/content/'.$resource->revision.$fileinfo->get_filepath().$fileinfo->get_filename(), true);
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$file['timecreated'] = $fileinfo->get_timecreated();
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$file['timemodified'] = $fileinfo->get_timemodified();
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$file['sortorder'] = $fileinfo->get_sortorder();
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$file['userid'] = $fileinfo->get_userid();
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$file['author'] = $fileinfo->get_author();
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$file['license'] = $fileinfo->get_license();
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$contents[] = $file;
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}
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return $contents;
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}
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