mirrored from git://git.moodle.org/moodle.git
/
file_info_context_course.php
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file_info_context_course.php
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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 course files.
*
* @package core
* @subpackage filebrowser
* @copyright 2008 Petr Skoda (http://skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Represents a course context in the tree navigated by @see{file_browser}.
*
* @package core
* @subpackage filebrowser
* @copyright 2008 Petr Skoda (http://skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class file_info_context_course extends file_info {
protected $course;
public function __construct($browser, $context, $course) {
parent::__construct($browser, $context);
$this->course = $course;
}
/**
* Return information about this specific context level
*
* @param $component
* @param $filearea
* @param $itemid
* @param $filepath
* @param $filename
*/
public function get_file_info($component, $filearea, $itemid, $filepath, $filename) {
// try to emulate require_login() tests here
if (!isloggedin()) {
return null;
}
if (!$this->course->visible and !has_capability('moodle/course:viewhiddencourses', $this->context)) {
return null;
}
if (!is_viewing($this->context) and !is_enrolled($this->context)) {
// no peaking here if not enrolled or inspector
return null;
}
if (empty($component)) {
return $this;
}
$methodname = "get_area_{$component}_{$filearea}";
if (method_exists($this, $methodname)) {
return $this->$methodname($itemid, $filepath, $filename);
}
return null;
}
protected function get_area_course_summary($itemid, $filepath, $filename) {
global $CFG;
if (!has_capability('moodle/course:update', $this->context)) {
return null;
}
if (is_null($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, 'course', 'summary', 0, $filepath, $filename)) {
if ($filepath === '/' and $filename === '.') {
$storedfile = new virtual_root_file($this->context->id, 'course', 'summary', 0);
} else {
// not found
return null;
}
}
$urlbase = $CFG->wwwroot.'/pluginfile.php';
return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, get_string('areacourseintro', 'repository'), false, true, true, false);
}
protected function get_area_course_section($itemid, $filepath, $filename) {
global $CFG, $DB;
if (!has_capability('moodle/course:update', $this->context)) {
return null;
}
if (empty($itemid)) {
// list all sections
return new file_info_area_course_section($this->browser, $this->context, $this->course, $this);
}
if (!$section = $DB->get_record('course_sections', array('course'=>$this->course->id, 'id'=>$itemid))) {
return null; // does not exist
}
$fs = get_file_storage();
$filepath = is_null($filepath) ? '/' : $filepath;
$filename = is_null($filename) ? '.' : $filename;
if (!$storedfile = $fs->get_file($this->context->id, 'course', 'section', $itemid, $filepath, $filename)) {
if ($filepath === '/' and $filename === '.') {
$storedfile = new virtual_root_file($this->context->id, 'course', 'section', $itemid);
} else {
// not found
return null;
}
}
$urlbase = $CFG->wwwroot.'/pluginfile.php';
return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, $section->section, true, true, true, false);
}
protected function get_area_course_legacy($itemid, $filepath, $filename) {
if (!has_capability('moodle/course:managefiles', $this->context)) {
return null;
}
if ($this->course->id != SITEID and $this->course->legacyfiles != 2) {
// bad luck, legacy course files not used any more
}
if (is_null($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, 'course', 'legacy', 0, $filepath, $filename)) {
if ($filepath === '/' and $filename === '.') {
$storedfile = new virtual_root_file($this->context->id, 'course', 'legacy', 0);
} else {
// not found
return null;
}
}
return new file_info_area_course_legacy($this->browser, $this->context, $storedfile);
}
protected function get_area_backup_course($itemid, $filepath, $filename) {
global $CFG;
if (!has_capability('moodle/backup:backupcourse', $this->context) and !has_capability('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 === '/' and $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);
}
/**
* Gets a stored file for the automated backup filearea directory
*
* @param int $itemid
* @param string $filepath
* @param string $filename
* @return file_info_context_course
*/
protected function get_area_backup_automated($itemid, $filepath, $filename) {
global $CFG;
if (!has_capability('moodle/restore:viewautomatedfilearea', $this->context)) {
return null;
}
if (is_null($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', 'automated', 0, $filepath, $filename)) {
if ($filepath === '/' and $filename === '.') {
$storedfile = new virtual_root_file($this->context->id, 'backup', 'automated', 0);
} else {
// not found
return null;
}
}
$downloadable = has_capability('moodle/site:config', $this->context);
$uploadable = false;
$urlbase = $CFG->wwwroot.'/pluginfile.php';
return new file_info_stored($this->browser, $this->context, $storedfile, $urlbase, get_string('automatedbackup', 'repository'), true, $downloadable, $uploadable, false);
}
protected function get_area_backup_section($itemid, $filepath, $filename) {
global $CFG, $DB;
if (!has_capability('moodle/backup:backupcourse', $this->context) and !has_capability('moodle/restore:restorecourse', $this->context)) {
return null;
}
if (empty($itemid)) {
// list all sections
return new file_info_area_backup_section($this->browser, $this->context, $this->course, $this);
}
if (!$section = $DB->get_record('course_sections', array('course'=>$this->course->id, 'id'=>$itemid))) {
return null; // does not exist
}
$fs = get_file_storage();
$filepath = is_null($filepath) ? '/' : $filepath;
$filename = is_null($filename) ? '.' : $filename;
if (!$storedfile = $fs->get_file($this->context->id, 'backup', 'section', $itemid, $filepath, $filename)) {
if ($filepath === '/' and $filename === '.') {
$storedfile = new virtual_root_file($this->context->id, 'backup', 'section', $itemid);
} 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, $section->id, true, $downloadable, $uploadable, false);
}
public function get_visible_name() {
return ($this->course->id == SITEID) ? get_string('frontpage', 'admin') : format_string($this->course->fullname, true, array('context'=>$this->context));
}
/**
* Can I add new files or directories?
* @return bool
*/
public function is_writable() {
return false;
}
/**
* Is directory?
* @return bool
*/
public function is_directory() {
return true;
}
/**
* Returns list of children.
* @return array of file_info instances
*/
public function get_children() {
$children = array();
if ($child = $this->get_area_course_summary(0, '/', '.')) {
$children[] = $child;
}
if ($child = $this->get_area_course_section(null, null, null)) {
$children[] = $child;
}
if ($child = $this->get_area_backup_section(null, null, null)) {
$children[] = $child;
}
if ($child = $this->get_area_backup_course(0, '/', '.')) {
$children[] = $child;
}
if ($child = $this->get_area_backup_automated(0, '/', '.')) {
$children[] = $child;
}
if ($child = $this->get_area_course_legacy(0, '/', '.')) {
$children[] = $child;
}
// now list all modules
$modinfo = get_fast_modinfo($this->course);
foreach ($modinfo->cms as $cminfo) {
if (empty($cminfo->uservisible)) {
continue;
}
$modcontext = get_context_instance(CONTEXT_MODULE, $cminfo->id);
if ($child = $this->browser->get_file_info($modcontext)) {
$children[] = $child;
}
}
return $children;
}
/**
* Returns parent file_info instance
* @return file_info or null for root
*/
public function get_parent() {
//TODO: error checking if get_parent_contextid() returns false
$pcid = get_parent_contextid($this->context);
$parent = get_context_instance_by_id($pcid);
return $this->browser->get_file_info($parent);
}
}
/**
* Subclass of file_info_stored for files in the course files area.
*
* @package core
* @subpackage filebrowser
* @copyright 2008 Petr Skoda (http://skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class file_info_area_course_legacy extends file_info_stored {
public function __construct($browser, $context, $storedfile) {
global $CFG;
$urlbase = $CFG->wwwroot.'/file.php';
parent::__construct($browser, $context, $storedfile, $urlbase, get_string('coursefiles'), false, true, true, false);
}
/**
* Returns file download url
* @param bool $forcedownload
* @param bool $htts force https
* @return string url
*/
public function get_url($forcedownload=false, $https=false) {
if (!$this->is_readable()) {
return null;
}
if ($this->lf->is_directory()) {
return null;
}
$filepath = $this->lf->get_filepath();
$filename = $this->lf->get_filename();
$courseid = $this->context->instanceid;
$path = '/'.$courseid.$filepath.$filename;
return file_encode_url($this->urlbase, $path, $forcedownload, $https);
}
/**
* Returns list of children.
* @return array of file_info instances
*/
public function get_children() {
if (!$this->lf->is_directory()) {
return array();
}
$result = array();
$fs = get_file_storage();
$storedfiles = $fs->get_directory_files($this->context->id, 'course', 'legacy', 0, $this->lf->get_filepath(), false, true, "filepath ASC, filename ASC");
foreach ($storedfiles as $file) {
$result[] = new file_info_area_course_legacy($this->browser, $this->context, $file);
}
return $result;
}
}
/**
* Represents a course category context in the tree navigated by @see{file_browser}.
*
* @package core
* @subpackage filebrowser
* @copyright 2008 Petr Skoda (http://skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class file_info_area_course_section extends file_info {
protected $course;
protected $courseinfo;
public function __construct($browser, $context, $course, file_info_context_course $courseinfo) {
parent::__construct($browser, $context);
$this->course = $course;
$this->courseinfo = $courseinfo;
}
/**
* Returns list of standard virtual file/directory identification.
* The difference from stored_file parameters is that null values
* are allowed in all fields
* @return array with keys contextid, filearea, itemid, filepath and filename
*/
public function get_params() {
return array('contextid' => $this->context->id,
'component' => 'course',
'filearea' => 'section',
'itemid' => null,
'filepath' => null,
'filename' => null);
}
/**
* Returns localised visible name.
* @return string
*/
public function get_visible_name() {
//$format = $this->course->format;
$sectionsname = get_string("coursesectionsummaries");
return $sectionsname;
}
/**
* Can I add new files or directories?
* @return bool
*/
public function is_writable() {
return false;
}
/**
* Is this empty area?
*
* @return bool
*/
public function is_empty_area() {
$fs = get_file_storage();
return $fs->is_area_empty($this->context->id, 'course', 'section');
}
/**
* Is directory?
* @return bool
*/
public function is_directory() {
return true;
}
/**
* Returns list of children.
* @return array of file_info instances
*/
public function get_children() {
global $DB;
$children = array();
$course_sections = $DB->get_records('course_sections', array('course'=>$this->course->id), 'section');
foreach ($course_sections as $section) {
if ($child = $this->courseinfo->get_file_info('course', 'section', $section->id, '/', '.')) {
$children[] = $child;
}
}
return $children;
}
/**
* Returns parent file_info instance
* @return file_info or null for root
*/
public function get_parent() {
return $this->courseinfo;
}
}
/**
* Implementation of course section backup area
*
* @package core
* @subpackage filebrowser
* @copyright 2008 Petr Skoda (http://skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class file_info_area_backup_section extends file_info {
protected $course;
protected $courseinfo;
public function __construct($browser, $context, $course, file_info_context_course $courseinfo) {
parent::__construct($browser, $context);
$this->course = $course;
$this->courseinfo = $courseinfo;
}
/**
* Returns list of standard virtual file/directory identification.
* The difference from stored_file parameters is that null values
* are allowed in all fields
* @return array with keys contextid, component, filearea, itemid, filepath and filename
*/
public function get_params() {
return array('contextid' => $this->context->id,
'component' => 'backup',
'filearea' => 'section',
'itemid' => null,
'filepath' => null,
'filename' => null);
}
/**
* Returns localised visible name.
* @return string
*/
public function get_visible_name() {
return get_string('sectionbackup', 'repository');
}
/**
* Can I add new files or directories?
* @return bool
*/
public function is_writable() {
return false;
}
/**
* Is this empty area?
*
* @return bool
*/
public function is_empty_area() {
$fs = get_file_storage();
return $fs->is_area_empty($this->context->id, 'backup', 'section');
}
/**
* Is directory?
* @return bool
*/
public function is_directory() {
return true;
}
/**
* Returns list of children.
* @return array of file_info instances
*/
public function get_children() {
global $DB;
$children = array();
$course_sections = $DB->get_records('course_sections', array('course'=>$this->course->id), 'section');
foreach ($course_sections as $section) {
if ($child = $this->courseinfo->get_file_info('backup', 'section', $section->id, '/', '.')) {
$children[] = $child;
}
}
return $children;
}
/**
* Returns parent file_info instance
* @return file_info or null for root
*/
public function get_parent() {
return $this->browser->get_file_info($this->context);
}
}