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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/>.
/**
* Utility class for browsing of system files.
*
* @package core_files
* @copyright 2008 Petr Skoda (http://skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->libdir.'/filebrowser/file_info_context_coursecat.php');
/**
* Represents the system context in the tree navigated by {@link file_browser}.
*
* @package core_files
* @copyright 2008 Petr Skoda (http://skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class file_info_context_system extends file_info_context_coursecat {
/**
* Constructor
*
* @param file_browser $browser file_browser instance
* @param stdClass $context context object
*/
public function __construct($browser, $context) {
parent::__construct($browser, $context, (object)['id' => 0, 'parent' => 0, 'visible' => 1]);
}
/**
* Return information about this specific part of context level
*
* @param string $component component
* @param string $filearea file area
* @param int $itemid item ID
* @param string $filepath file path
* @param string $filename file name
* @return file_info|null file_info instance or null if not found or access not allowed
*/
public function get_file_info($component, $filearea, $itemid, $filepath, $filename) {
if (empty($component)) {
return $this;
}
$methodname = "get_area_{$component}_{$filearea}";
if (method_exists($this, $methodname)) {
return $this->$methodname($itemid, $filepath, $filename);
}
return null;
}
/**
* Gets a stored file for the backup course filearea directory.
*
* @param int $itemid item ID
* @param string $filepath file path
* @param string $filename file name
* @return file_info|null file_info instance or null if not found or access not allowed
*/
protected function get_area_backup_course($itemid, $filepath, $filename) {
global $CFG;
if (!isloggedin()) {
return null;
}
if (!has_any_capability(array('moodle/backup:backupcourse', 'moodle/restore:restorecourse'), $this->context)) {
return null;
}
if (is_null($itemid)) {
return $this;
}
$fs = get_file_storage();
$filepath = is_null($filepath) ? '/' : $filepath;
$filename = is_null($filename) ? '.' : $filename;
if (!$storedfile = $fs->get_file($this->context->id, 'backup', 'course', 0, $filepath, $filename)) {
if ($filepath === '/' && $filename === '.') {
$storedfile = new virtual_root_file($this->context->id, 'backup', 'course', 0);
} else {
// Not found.
return null;
}
}
$downloadable = has_capability('moodle/backup:downloadfile', $this->context);
$uploadable = has_capability('moodle/restore:uploadfile', $this->context);
$urlbase = $CFG->wwwroot . '/pluginfile.php';
return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase,
get_string('coursebackup', 'repository'), false, $downloadable, $uploadable, false);
}
/**
* Returns localised visible name.
*
* @return string
*/
public function get_visible_name() {
return get_string('arearoot', 'repository');
}
/**
* Whether or not new files or directories can be added
*
* @return bool
*/
public function is_writable() {
return false;
}
/**
* Whether or not this is a directory
*
* @return bool
*/
public function is_directory() {
return true;
}
/**
* Returns parent file_info instance
*
* @return file_info|null file_info instance or null for root
*/
public function get_parent() {
return null;
}
}