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<?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/>.
/**
* Mandatory public API of url module
*
* @package mod_url
* @copyright 2009 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die;
/**
* List of features supported in URL module
* @param string $feature FEATURE_xx constant for requested feature
* @return mixed True if module supports feature, false if not, null if doesn't know
*/
function url_supports($feature) {
switch($feature) {
case FEATURE_MOD_ARCHETYPE: return MOD_ARCHETYPE_RESOURCE;
case FEATURE_GROUPS: return false;
case FEATURE_GROUPINGS: return false;
case FEATURE_MOD_INTRO: return true;
case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
case FEATURE_GRADE_HAS_GRADE: return false;
case FEATURE_GRADE_OUTCOMES: return false;
case FEATURE_BACKUP_MOODLE2: return true;
case FEATURE_SHOW_DESCRIPTION: return true;
default: return null;
}
}
/**
* This function is used by the reset_course_userdata function in moodlelib.
* @param $data the data submitted from the reset course.
* @return array status array
*/
function url_reset_userdata($data) {
// Any changes to the list of dates that needs to be rolled should be same during course restore and course reset.
// See MDL-9367.
return array();
}
/**
* List the actions that correspond to a view of this module.
* This is used by the participation report.
*
* Note: This is not used by new logging system. Event with
* crud = 'r' and edulevel = LEVEL_PARTICIPATING will
* be considered as view action.
*
* @return array
*/
function url_get_view_actions() {
return array('view', 'view all');
}
/**
* List the actions that correspond to a post of this module.
* This is used by the participation report.
*
* Note: This is not used by new logging system. Event with
* crud = ('c' || 'u' || 'd') and edulevel = LEVEL_PARTICIPATING
* will be considered as post action.
*
* @return array
*/
function url_get_post_actions() {
return array('update', 'add');
}
/**
* Add url instance.
* @param object $data
* @param object $mform
* @return int new url instance id
*/
function url_add_instance($data, $mform) {
global $CFG, $DB;
require_once($CFG->dirroot.'/mod/url/locallib.php');
$parameters = array();
for ($i=0; $i < 100; $i++) {
$parameter = "parameter_$i";
$variable = "variable_$i";
if (empty($data->$parameter) or empty($data->$variable)) {
continue;
}
$parameters[$data->$parameter] = $data->$variable;
}
$data->parameters = serialize($parameters);
$displayoptions = array();
if ($data->display == RESOURCELIB_DISPLAY_POPUP) {
$displayoptions['popupwidth'] = $data->popupwidth;
$displayoptions['popupheight'] = $data->popupheight;
}
if (in_array($data->display, array(RESOURCELIB_DISPLAY_AUTO, RESOURCELIB_DISPLAY_EMBED, RESOURCELIB_DISPLAY_FRAME))) {
$displayoptions['printintro'] = (int)!empty($data->printintro);
}
$data->displayoptions = serialize($displayoptions);
$data->externalurl = url_fix_submitted_url($data->externalurl);
$data->timemodified = time();
$data->id = $DB->insert_record('url', $data);
$completiontimeexpected = !empty($data->completionexpected) ? $data->completionexpected : null;
\core_completion\api::update_completion_date_event($data->coursemodule, 'url', $data->id, $completiontimeexpected);
return $data->id;
}
/**
* Update url instance.
* @param object $data
* @param object $mform
* @return bool true
*/
function url_update_instance($data, $mform) {
global $CFG, $DB;
require_once($CFG->dirroot.'/mod/url/locallib.php');
$parameters = array();
for ($i=0; $i < 100; $i++) {
$parameter = "parameter_$i";
$variable = "variable_$i";
if (empty($data->$parameter) or empty($data->$variable)) {
continue;
}
$parameters[$data->$parameter] = $data->$variable;
}
$data->parameters = serialize($parameters);
$displayoptions = array();
if ($data->display == RESOURCELIB_DISPLAY_POPUP) {
$displayoptions['popupwidth'] = $data->popupwidth;
$displayoptions['popupheight'] = $data->popupheight;
}
if (in_array($data->display, array(RESOURCELIB_DISPLAY_AUTO, RESOURCELIB_DISPLAY_EMBED, RESOURCELIB_DISPLAY_FRAME))) {
$displayoptions['printintro'] = (int)!empty($data->printintro);
}
$data->displayoptions = serialize($displayoptions);
$data->externalurl = url_fix_submitted_url($data->externalurl);
$data->timemodified = time();
$data->id = $data->instance;
$DB->update_record('url', $data);
$completiontimeexpected = !empty($data->completionexpected) ? $data->completionexpected : null;
\core_completion\api::update_completion_date_event($data->coursemodule, 'url', $data->id, $completiontimeexpected);
return true;
}
/**
* Delete url instance.
* @param int $id
* @return bool true
*/
function url_delete_instance($id) {
global $DB;
if (!$url = $DB->get_record('url', array('id'=>$id))) {
return false;
}
$cm = get_coursemodule_from_instance('url', $id);
\core_completion\api::update_completion_date_event($cm->id, 'url', $id, null);
// note: all context files are deleted automatically
$DB->delete_records('url', array('id'=>$url->id));
return true;
}
/**
* Given a course_module object, this function returns any
* "extra" information that may be needed when printing
* this activity in a course listing.
*
* See {@link get_array_of_activities()} in course/lib.php
*
* @param object $coursemodule
* @return cached_cm_info info
*/
function url_get_coursemodule_info($coursemodule) {
global $CFG, $DB;
require_once("$CFG->dirroot/mod/url/locallib.php");
if (!$url = $DB->get_record('url', array('id'=>$coursemodule->instance),
'id, name, display, displayoptions, externalurl, parameters, intro, introformat')) {
return NULL;
}
$info = new cached_cm_info();
$info->name = $url->name;
//note: there should be a way to differentiate links from normal resources
$info->icon = url_guess_icon($url->externalurl, 24);
$display = url_get_final_display_type($url);
if ($display == RESOURCELIB_DISPLAY_POPUP) {
$fullurl = "$CFG->wwwroot/mod/url/view.php?id=$coursemodule->id&redirect=1";
$options = empty($url->displayoptions) ? array() : unserialize($url->displayoptions);
$width = empty($options['popupwidth']) ? 620 : $options['popupwidth'];
$height = empty($options['popupheight']) ? 450 : $options['popupheight'];
$wh = "width=$width,height=$height,toolbar=no,location=no,menubar=no,copyhistory=no,status=no,directories=no,scrollbars=yes,resizable=yes";
$info->onclick = "window.open('$fullurl', '', '$wh'); return false;";
} else if ($display == RESOURCELIB_DISPLAY_NEW) {
$fullurl = "$CFG->wwwroot/mod/url/view.php?id=$coursemodule->id&redirect=1";
$info->onclick = "window.open('$fullurl'); return false;";
}
if ($coursemodule->showdescription) {
// Convert intro to html. Do not filter cached version, filters run at display time.
$info->content = format_module_intro('url', $url, $coursemodule->id, false);
}
return $info;
}
/**
* Return a list of page types
* @param string $pagetype current page type
* @param stdClass $parentcontext Block's parent context
* @param stdClass $currentcontext Current context of block
*/
function url_page_type_list($pagetype, $parentcontext, $currentcontext) {
$module_pagetype = array('mod-url-*'=>get_string('page-mod-url-x', 'url'));
return $module_pagetype;
}
/**
* Export URL resource contents
*
* @return array of file content
*/
function url_export_contents($cm, $baseurl) {
global $CFG, $DB;
require_once("$CFG->dirroot/mod/url/locallib.php");
$contents = array();
$context = context_module::instance($cm->id);
$course = $DB->get_record('course', array('id'=>$cm->course), '*', MUST_EXIST);
$urlrecord = $DB->get_record('url', array('id'=>$cm->instance), '*', MUST_EXIST);
$fullurl = str_replace('&', '&', url_get_full_url($urlrecord, $cm, $course));
$isurl = clean_param($fullurl, PARAM_URL);
if (empty($isurl)) {
return null;
}
$url = array();
$url['type'] = 'url';
$url['filename'] = clean_param(format_string($urlrecord->name), PARAM_FILE);
$url['filepath'] = null;
$url['filesize'] = 0;
$url['fileurl'] = $fullurl;
$url['timecreated'] = null;
$url['timemodified'] = $urlrecord->timemodified;
$url['sortorder'] = null;
$url['userid'] = null;
$url['author'] = null;
$url['license'] = null;
$contents[] = $url;
return $contents;
}
/**
* Register the ability to handle drag and drop file uploads
* @return array containing details of the files / types the mod can handle
*/
function url_dndupload_register() {
return array('types' => array(
array('identifier' => 'url', 'message' => get_string('createurl', 'url'))
));
}
/**
* Handle a file that has been uploaded
* @param object $uploadinfo details of the file / content that has been uploaded
* @return int instance id of the newly created mod
*/
function url_dndupload_handle($uploadinfo) {
// Gather all the required data.
$data = new stdClass();
$data->course = $uploadinfo->course->id;
$data->name = $uploadinfo->displayname;
$data->intro = '<p>'.$uploadinfo->displayname.'</p>';
$data->introformat = FORMAT_HTML;
$data->externalurl = clean_param($uploadinfo->content, PARAM_URL);
$data->timemodified = time();
$data->coursemodule = $uploadinfo->coursemodule;
// Set the display options to the site defaults.
$config = get_config('url');
$data->display = $config->display;
$data->popupwidth = $config->popupwidth;
$data->popupheight = $config->popupheight;
$data->printintro = $config->printintro;
return url_add_instance($data, null);
}
/**
* Mark the activity completed (if required) and trigger the course_module_viewed event.
*
* @param stdClass $url url object
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @since Moodle 3.0
*/
function url_view($url, $course, $cm, $context) {
// Trigger course_module_viewed event.
$params = array(
'context' => $context,
'objectid' => $url->id
);
$event = \mod_url\event\course_module_viewed::create($params);
$event->add_record_snapshot('course_modules', $cm);
$event->add_record_snapshot('course', $course);
$event->add_record_snapshot('url', $url);
$event->trigger();
// Completion.
$completion = new completion_info($course);
$completion->set_module_viewed($cm);
}
/**
* Check if the module has any update that affects the current user since a given time.
*
* @param cm_info $cm course module data
* @param int $from the time to check updates from
* @param array $filter if we need to check only specific updates
* @return stdClass an object with the different type of areas indicating if they were updated or not
* @since Moodle 3.2
*/
function url_check_updates_since(cm_info $cm, $from, $filter = array()) {
$updates = course_check_module_updates_since($cm, $from, array('content'), $filter);
return $updates;
}
/**
* This function receives a calendar event and returns the action associated with it, or null if there is none.
*
* This is used by block_myoverview in order to display the event appropriately. If null is returned then the event
* is not displayed on the block.
*
* @param calendar_event $event
* @param \core_calendar\action_factory $factory
* @param int $userid ID override for calendar events
* @return \core_calendar\local\event\entities\action_interface|null
*/
function mod_url_core_calendar_provide_event_action(calendar_event $event,
\core_calendar\action_factory $factory, $userid = 0) {
global $USER;
if (empty($userid)) {
$userid = $USER->id;
}
$cm = get_fast_modinfo($event->courseid, $userid)->instances['url'][$event->instance];
$completion = new \completion_info($cm->get_course());
$completiondata = $completion->get_data($cm, false, $userid);
if ($completiondata->completionstate != COMPLETION_INCOMPLETE) {
return null;
}
return $factory->create_instance(
get_string('view'),
new \moodle_url('/mod/url/view.php', ['id' => $cm->id]),
1,
true
);
}