TYPO3 / TYPO3.CMS

            // If the task is currently running, it may not be deleted

            if ($task->isExecutionRunning()) {

                $this->addMessage($this->getLanguageService()->getLL('msg.maynotDeleteRunningTask'), FlashMessage::ERROR);

            } else {

                if ($this->scheduler->removeTask($task)) {

                    $this->getBackendUser()->writelog(4, 0, 0, 0, 'Scheduler task "%s" (UID: %s, Class: "%s") was deleted', [$task->getTaskTitle(), $task->getTaskUid(), $task->getTaskClassName()]);

                    $this->addMessage($this->getLanguageService()->getLL('msg.deleteSuccess'));

                } else {

                    $this->addMessage($this->getLanguageService()->getLL('msg.deleteError'), FlashMessage::ERROR);

                }

            }

        } catch (\UnexpectedValueException $e) {

            // The task could not be unserialized properly, simply update the database record

            $taskUid = (int)$this->submittedData['uid'];

            }

            // Save to database

            $result = $this->scheduler->saveTask($task);

            if ($result) {

                $this->getBackendUser()->writelog(4, 0, 0, 0, 'Scheduler task "%s" (UID: %s, Class: "%s") was updated', [$task->getTaskTitle(), $task->getTaskUid(), $task->getTaskClassName()]);

                $this->addMessage($this->getLanguageService()->getLL('msg.updateSuccess'));

            } else {

                $this->addMessage($this->getLanguageService()->getLL('msg.updateError'), FlashMessage::ERROR);

            }

        } else {

            // A new task is being created

            // Create an instance of chosen class

            $task->setTaskGroup($this->submittedData['task_group']);

            // Add to database

            $result = $this->scheduler->addTask($task);

            if ($result) {

                $this->getBackendUser()->writelog(4, 0, 0, 0, 'Scheduler task "%s" (UID: %s, Class: "%s") was added', [$task->getTaskTitle(), $task->getTaskUid(), $task->getTaskClassName()]);

                $this->addMessage($this->getLanguageService()->getLL('msg.addSuccess'));

                // set the uid of the just created task so that we

                // can continue editing after initial saving

                $this->submittedData['uid'] = $task->getTaskUid();

            } else {

                $this->addMessage($this->getLanguageService()->getLL('msg.addError'), FlashMessage::ERROR);

            }

        }

    }