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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/>.
/**
* Data registry renderable.
*
* @package tool_dataprivacy
* @copyright 2018 David Monllao
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace tool_dataprivacy\output;
defined('MOODLE_INTERNAL') || die();
use renderable;
use renderer_base;
use stdClass;
use templatable;
use tool_dataprivacy\data_registry;
require_once($CFG->dirroot . '/' . $CFG->admin . '/tool/dataprivacy/lib.php');
require_once($CFG->libdir . '/blocklib.php');
/**
* Class containing the data registry renderable
*
* @copyright 2018 David Monllao
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class data_registry_page implements renderable, templatable {
/**
* @var int
*/
private $defaultcontextlevel;
/**
* @var int
*/
private $defaultcontextid;
/**
* Constructor.
*
* @param int $defaultcontextlevel
* @param int $defaultcontextid
* @return null
*/
public function __construct($defaultcontextlevel = false, $defaultcontextid = false) {
$this->defaultcontextlevel = $defaultcontextlevel;
$this->defaultcontextid = $defaultcontextid;
}
/**
* Export this data so it can be used as the context for a mustache template.
*
* @param renderer_base $output
* @return stdClass
*/
public function export_for_template(renderer_base $output) {
global $PAGE;
$params = [\context_system::instance()->id, $this->defaultcontextlevel, $this->defaultcontextid];
$PAGE->requires->js_call_amd('tool_dataprivacy/data_registry', 'init', $params);
$data = new stdClass();
$defaultsbutton = new \action_link(
new \moodle_url('/admin/tool/dataprivacy/defaults.php'),
get_string('setdefaults', 'tool_dataprivacy'),
null,
['class' => 'btn btn-primary']
);
$data->defaultsbutton = $defaultsbutton->export_for_template($output);
$actionmenu = new \action_menu();
$actionmenu->set_menu_trigger(get_string('edit'), 'btn btn-primary');
$actionmenu->set_owner_selector('dataregistry-actions');
$actionmenu->set_alignment(\action_menu::TL, \action_menu::BL);
$url = new \moodle_url('/admin/tool/dataprivacy/categories.php');
$categories = new \action_menu_link_secondary($url, null, get_string('categories', 'tool_dataprivacy'));
$actionmenu->add($categories);
$url = new \moodle_url('/admin/tool/dataprivacy/purposes.php');
$purposes = new \action_menu_link_secondary($url, null, get_string('purposes', 'tool_dataprivacy'));
$actionmenu->add($purposes);
$data->actions = $actionmenu->export_for_template($output);
if (!data_registry::defaults_set()) {
$data->info = (object)[
'message' => get_string('dataregistryinfo', 'tool_dataprivacy'),
'announce' => 1
];
$data->nosystemdefaults = (object)[
'message' => get_string('nosystemdefaults', 'tool_dataprivacy'),
'announce' => 1
];
}
$data->tree = $this->get_default_tree_structure();
return $data;
}
/**
* Returns the tree default structure.
*
* @return array
*/
private function get_default_tree_structure() {
$frontpage = \context_course::instance(SITEID);
$categorybranches = $this->get_all_category_branches();
$elements = [
'text' => get_string('contextlevelname' . CONTEXT_SYSTEM, 'tool_dataprivacy'),
'contextlevel' => CONTEXT_SYSTEM,
'branches' => [
[
'text' => get_string('user'),
'contextlevel' => CONTEXT_USER,
], [
'text' => get_string('categories'),
'branches' => $categorybranches,
'expandelement' => 'category',
], [
'text' => get_string('frontpagecourse', 'tool_dataprivacy'),
'contextid' => $frontpage->id,
'branches' => [
[
'text' => get_string('activitiesandresources', 'tool_dataprivacy'),
'expandcontextid' => $frontpage->id,
'expandelement' => 'module',
'expanded' => 0,
], [
'text' => get_string('blocks'),
'expandcontextid' => $frontpage->id,
'expandelement' => 'block',
'expanded' => 0,
],
]
]
]
];
// Returned as an array to follow a common array format.
return [self::complete($elements, $this->defaultcontextlevel, $this->defaultcontextid)];
}
/**
* Returns the hierarchy of system course categories.
*
* @return array
*/
private function get_all_category_branches() {
$categories = data_registry::get_site_categories();
$categoriesbranch = [];
while (count($categories) > 0) {
foreach ($categories as $key => $category) {
$context = \context_coursecat::instance($category->id);
$newnode = [
'text' => shorten_text(format_string($category->name, true, ['context' => $context])),
'categoryid' => $category->id,
'contextid' => $context->id,
];
if ($category->coursecount > 0) {
$newnode['branches'] = [
[
'text' => get_string('courses'),
'expandcontextid' => $context->id,
'expandelement' => 'course',
'expanded' => 0,
]
];
}
$added = false;
if ($category->parent == 0) {
// New categories root-level node.
$categoriesbranch[] = $newnode;
$added = true;
} else {
// Add the new node under the appropriate parent.
if ($this->add_to_parent_category_branch($category, $newnode, $categoriesbranch)) {
$added = true;
}
}
if ($added) {
unset($categories[$key]);
}
}
}
return $categoriesbranch;
}
/**
* Gets the courses branch for the provided category.
*
* @param \context $catcontext
* @return array
*/
public static function get_courses_branch(\context $catcontext) {
if ($catcontext->contextlevel !== CONTEXT_COURSECAT) {
throw new \coding_exception('A course category context should be provided');
}
$coursecat = \core_course_category::get($catcontext->instanceid);
$courses = $coursecat->get_courses();
$branches = [];
foreach ($courses as $course) {
$coursecontext = \context_course::instance($course->id);
$coursenode = [
'text' => shorten_text(format_string($course->shortname, true, ['context' => $coursecontext])),
'contextid' => $coursecontext->id,
'branches' => [
[
'text' => get_string('activitiesandresources', 'tool_dataprivacy'),
'expandcontextid' => $coursecontext->id,
'expandelement' => 'module',
'expanded' => 0,
], [
'text' => get_string('blocks'),
'expandcontextid' => $coursecontext->id,
'expandelement' => 'block',
'expanded' => 0,
],
]
];
$branches[] = self::complete($coursenode);
}
return $branches;
}
/**
* Gets the modules branch for the provided course.
*
* @param \context $coursecontext
* @return array
*/
public static function get_modules_branch(\context $coursecontext) {
if ($coursecontext->contextlevel !== CONTEXT_COURSE) {
throw new \coding_exception('A course context should be provided');
}
$branches = [];
// Using the current user.
$modinfo = get_fast_modinfo($coursecontext->instanceid);
foreach ($modinfo->get_instances() as $moduletype => $instances) {
foreach ($instances as $cm) {
if (!$cm->uservisible) {
continue;
}
$a = (object)[
'instancename' => shorten_text($cm->get_formatted_name()),
'modulename' => get_string('pluginname', 'mod_' . $moduletype),
];
$text = get_string('moduleinstancename', 'tool_dataprivacy', $a);
$branches[] = self::complete([
'text' => $text,
'contextid' => $cm->context->id,
]);
}
}
return $branches;
}
/**
* Gets the blocks branch for the provided course.
*
* @param \context $coursecontext
* @return null
*/
public static function get_blocks_branch(\context $coursecontext) {
global $DB;
if ($coursecontext->contextlevel !== CONTEXT_COURSE) {
throw new \coding_exception('A course context should be provided');
}
$branches = [];
$children = $coursecontext->get_child_contexts();
foreach ($children as $childcontext) {
if ($childcontext->contextlevel !== CONTEXT_BLOCK) {
continue;
}
$blockinstance = block_instance_by_id($childcontext->instanceid);
$displayname = shorten_text(format_string($blockinstance->get_title(), true, ['context' => $childcontext]));
$branches[] = self::complete([
'text' => $displayname,
'contextid' => $childcontext->id,
]);
}
return $branches;
}
/**
* Adds the provided category to the categories branch.
*
* @param stdClass $category
* @param array $newnode
* @param array $categoriesbranch
* @return bool
*/
private function add_to_parent_category_branch($category, $newnode, &$categoriesbranch) {
foreach ($categoriesbranch as $key => $branch) {
if (!empty($branch['categoryid']) && $branch['categoryid'] == $category->parent) {
// It may be empty (if it does not contain courses and this is the first child cat).
if (!isset($categoriesbranch[$key]['branches'])) {
$categoriesbranch[$key]['branches'] = [];
}
$categoriesbranch[$key]['branches'][] = $newnode;
return true;
}
if (!empty($branch['branches'])) {
$parent = $this->add_to_parent_category_branch($category, $newnode, $categoriesbranch[$key]['branches']);
if ($parent) {
return true;
}
}
}
return false;
}
/**
* Completes tree nodes with default values.
*
* @param array $node
* @param int|false $currentcontextlevel
* @param int|false $currentcontextid
* @return array
*/
private static function complete($node, $currentcontextlevel = false, $currentcontextid = false) {
if (!isset($node['active'])) {
if ($currentcontextlevel && !empty($node['contextlevel']) &&
$currentcontextlevel == $node['contextlevel'] &&
empty($currentcontextid)) {
// This is the active context level, we also checked that there
// is no default contextid set.
$node['active'] = true;
} else if ($currentcontextid && !empty($node['contextid']) &&
$currentcontextid == $node['contextid']) {
$node['active'] = true;
} else {
$node['active'] = null;
}
}
if (!isset($node['branches'])) {
$node['branches'] = [];
} else {
foreach ($node['branches'] as $key => $childnode) {
$node['branches'][$key] = self::complete($childnode, $currentcontextlevel, $currentcontextid);
}
}
if (!isset($node['expandelement'])) {
$node['expandelement'] = null;
}
if (!isset($node['expandcontextid'])) {
$node['expandcontextid'] = null;
}
if (!isset($node['contextid'])) {
$node['contextid'] = null;
}
if (!isset($node['contextlevel'])) {
$node['contextlevel'] = null;
}
if (!isset($node['expanded'])) {
if (!empty($node['branches'])) {
$node['expanded'] = 1;
} else {
$node['expanded'] = 0;
}
}
return $node;
}
/**
* From a list of purpose persistents to a list of id => name purposes.
*
* @param \tool_dataprivacy\purpose[] $purposes
* @param bool $includenotset
* @param bool $includeinherit
* @return string[]
*/
public static function purpose_options($purposes, $includenotset = true, $includeinherit = true) {
$options = self::base_options($includenotset, $includeinherit);
foreach ($purposes as $purpose) {
$options[$purpose->get('id')] = $purpose->get('name');
}
return $options;
}
/**
* From a list of category persistents to a list of id => name categories.
*
* @param \tool_dataprivacy\category[] $categories
* @param bool $includenotset
* @param bool $includeinherit
* @return string[]
*/
public static function category_options($categories, $includenotset = true, $includeinherit = true) {
$options = self::base_options($includenotset, $includeinherit);
foreach ($categories as $category) {
$options[$category->get('id')] = $category->get('name');
}
return $options;
}
/**
* Base not set and inherit options.
*
* @param bool $includenotset
* @param bool $includeinherit
* @return array
*/
private static function base_options($includenotset = true, $includeinherit = true) {
$options = [];
if ($includenotset) {
$options[\tool_dataprivacy\context_instance::NOTSET] = get_string('notset', 'tool_dataprivacy');
}
if ($includeinherit) {
$options[\tool_dataprivacy\context_instance::INHERIT] = get_string('inherit', 'tool_dataprivacy');
}
return $options;
}
}