MainWindowController.java 文件源码

protected void refreshListView () {

        this.questionList.getItems().clear();

        //create list with all questions
        ObservableList<String> questions = FXCollections.observableArrayList();

        //iterate through all questions
        for (Map.Entry<String,QuestionEntry> entry : this.questionMap.entrySet()) {
            //add question name to list
            questions.add(entry.getKey());
        }

        Collections.sort(questions);

        if (questions.size() <= 0) {
            //hide delete button
            this.deleteButton.setVisible(false);
        } else {
            //show delete button
            this.deleteButton.setVisible(true);
        }

        this.questionList.setItems(questions);
    }