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<?php
/**
* HomeworkFolder.php
*
* This is a FolderType implementation for homework folders.
*
* A homework folder in Stud.IP can be writeable by all course members
* but is only readable by teachers.
*
* This program 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 2 of
* the License, or (at your option) any later version.
*
* @author Moritz Strohm <strohm@data-quest.de>
* @copyright 2016 data-quest
* @license http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
* @category Stud.IP
*/
class HomeworkFolder extends PermissionEnabledFolder
{
public static $sorter = 2;
/**
* Returns a localised name of the HomeworkFolder type.
*
* @return string The localised name of this folder type.
*/
public static function getTypeName()
{
return _('Ordner für Hausarbeiten');
}
public static function availableInRange($range_id_or_object, $user_id)
{
$course = Course::toObject($range_id_or_object);
if ($course && !$course->isNew()) {
return Seminar_Perm::get()->have_studip_perm('tutor', $course->id, $user_id);
}
return false;
}
public function __construct($folderdata = null)
{
parent::__construct($folderdata);
$this->permission = 3;
}
/**
* Returns the Icon object for the HomeworkFolder type.
*
* @return Icon An icon object with the icon for this folder type.
*/
public function getIcon($role = Icon::DEFAULT_ROLE)
{
$shape = $this->is_empty
? 'folder-edit-empty'
: 'folder-edit-full';
return Icon::create($shape, $role);
}
/**
* Homework folders don't allow subfolders.
*
* @return bool False
*/
public function isSubfolderAllowed($user_id)
{
//no subfolders allowed (I'm a homework folder, not a home folder backup!)
return false;
}
/**
* Returns the description template for a HomeworkFolder instance.
*
* @return string A description for the HomeworkFolder instance.
*/
public function getDescriptionTemplate()
{
$template = $GLOBALS['template_factory']->open('filesystem/homework_folder/description.php');
$template->folder = $this;
$template->folderdata = $this->folderdata;
return $template;
}
/**
* Folders of this type don't have an edit template.
*
* @return string
*/
public function getEditTemplate()
{
return '';
}
/**
* @param string $user_id
* @return bool
*/
public function isReadable($user_id = null)
{
return StandardFolder::isReadable($user_id);
}
/**
* Determines if a user may see the file.
* @param FileRef|string $fileref_or_id
* @param string $user_id
* @return bool
*/
public function isFileVisible($fileref_or_id, $user_id)
{
$fileref = FileRef::toObject($fileref_or_id);
return $fileref->user_id === $user_id || parent::isReadable($user_id);
}
/**
* @param FileRef|string $fileref_or_id
* @param string $user_id
* @return bool
*/
public function isFileEditable($fileref_or_id, $user_id)
{
return $GLOBALS['perm']->have_studip_perm('tutor', $this->range_id, $user_id);
}
/**
* Checks if a user has write permissions to a file.
*
* For standard folders write permissions are granted
* if the user is the owner of the file or if the user has at least
* tutor permissions on the Stud.IP object specified by range_id
* (such objects may be courses or institutes for example).
*
* @param FileRef|string $fileref_or_id
* @param string $user_id
* @return bool
*/
public function isFileWritable($fileref_or_id, $user_id)
{
return $GLOBALS['perm']->have_studip_perm('tutor', $this->range_id, $user_id);
}
}
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