class.ilObjStudyProgrammeReferenceAccess.php

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<?php

declare(strict_types=1);

class ilObjStudyProgrammeReferenceAccess extends ilContainerReferenceAccess
{
    public function _checkAccess($a_cmd, $a_permission, $a_ref_id, $a_obj_id, $a_user_id = ""): bool
    {
        global $DIC;
        $ilAccess = $DIC['ilAccess'];
        switch ($a_permission) {
            case 'visible':
            case 'read':
                $target_ref_id = ilContainerReference::_lookupTargetRefId($a_obj_id);
                if (!$target_ref_id || !$ilAccess->checkAccessOfUser($a_user_id, $a_permission, $a_cmd, $target_ref_id)) {
                    return false;
                }
                break;
            case "delete":

                if (!$ilAccess->checkAccessOfUser($a_user_id, $a_permission, $a_cmd, $a_ref_id)) {
                    return false;
                }
                $tree = $DIC['tree'];
                $target_ref_id = ilContainerReference::_lookupTargetRefId($a_obj_id);
                $prg = ilObjStudyProgramme::getInstanceByRefId($target_ref_id);
                $target_id = $prg->getId();
                $parent = $tree->getParentNodeData($a_ref_id);
                if ($parent["type"] === "prg" && !$parent["deleted"]) {
                    $parent = ilObjStudyProgramme::getInstanceByRefId($parent["ref_id"]);
                    if (! $parent->canBeRemoved()) {
                        return false;
                    }
                }

                break;
        }

        return true;
    }

    public static function _getCommands(int $a_ref_id = null): array
    {
        global $DIC;
        $ilAccess = $DIC->access();
        $prgr_obj_id = ilObject::_lookupObjId($a_ref_id);
        $target_ref_id = ilContainerReference::_lookupTargetRefId($prgr_obj_id);

        $commands = [];

        if ($ilAccess->checkAccess('write', '', $a_ref_id)) {
            $commands[] = ["permission" => "write", "cmd" => "editReference", "lang_var" => "edit"];
        }
        if ($ilAccess->checkAccess('read', '', $target_ref_id)) {
            $commands[] = array('permission' => 'visible', 'cmd' => 'view', 'lang_var' => 'show', 'default' => true);
        }

        return $commands;
    }
}