示例#1
0
        /*
         * Aiding methods
         *
         */

        private void UncheckOverreplies()
        {
            ListBox answersListbox = this.FindControl <ListBox>("lst_answers");

            QuizScreenViewModel dataContext = (QuizScreenViewModel)answersListbox.DataContext;

            int maxAllowedAnswers = dataContext.CurrentQuestion.NumberOfRightAnswers;
            int selectedAnswers   = answersListbox.SelectedItems.Count;

            dataContext.SelectedAnswers = answersListbox.SelectedItems;

            if (selectedAnswers > maxAllowedAnswers)
            {
                answersListbox.SelectedItems.RemoveAt(0);
            }
        }
示例#2
0
        private void QuizScreenUserControl_PointerReleased(object sender, Avalonia.Input.PointerReleasedEventArgs e)
        {
            UserControl quizUserControl = (UserControl)sender;

            QuizScreenViewModel dataContext = (QuizScreenViewModel)quizUserControl.DataContext;

            if (e.InitialPressMouseButton == Avalonia.Input.MouseButton.Middle)
            {
                dataContext.ShowAnswers();
            }

            // Got focus again on the whole UserControl

            UserControl quizScreenUserControl = this.FindControl <UserControl>("quizScreenUserControl");

            quizScreenUserControl.Focus();
        }
示例#3
0
        private void QuizScreenUserControl_KeyUp(object sender, Avalonia.Input.KeyEventArgs e)
        {
            e.Route = Avalonia.Interactivity.RoutingStrategies.Tunnel;

            UserControl quizUserControl = (UserControl)sender;

            QuizScreenViewModel dataContext = (QuizScreenViewModel)quizUserControl.DataContext;

            Avalonia.Input.Key pressedKey = e.Key;

            int pressedKeyIntCode = (int)pressedKey;

            if (pressedKey == Avalonia.Input.Key.Space || pressedKey == Avalonia.Input.Key.NumPad0)
            {
                dataContext.ShowAnswers();
            }
            else if (pressedKey == Avalonia.Input.Key.Right || pressedKey == Avalonia.Input.Key.Enter)
            {
                dataContext.NextQuestion();
            }
            else if (pressedKey == Avalonia.Input.Key.Escape)
            {
                dataContext.TerminateQuiz();
            }
            else
            {
                // Select answer based on what number I pressed on the keyboard

                // CHECK: Is the quiz ended?
                if (dataContext.CurrentQuiz.GetUnansweredQuestion() is null)
                {
                    return;
                }

                // 35 - "1" on keyboard, 43 - "9" on keyboard
                bool keyboardNumberPressed = (pressedKeyIntCode >= 35 && pressedKeyIntCode <= 43);
                // 75 - "1" on numeric keypad, 83 - "9" on numeric keypad
                bool numpadNumberPressed = (pressedKeyIntCode >= 75 && pressedKeyIntCode <= 83);

                if (keyboardNumberPressed || numpadNumberPressed)
                {
                    //
                    int choosedAnswerNumber = keyboardNumberPressed ? pressedKeyIntCode - 34 : pressedKeyIntCode - 74;

                    ListBox            answersListbox = this.FindControl <ListBox>("lst_answers");
                    List <AnswerSheet> answerList     = (List <AnswerSheet>)answersListbox.Items;

                    if (!(choosedAnswerNumber > answerList.Count))
                    {
                        int choosedAnswerListIndex = choosedAnswerNumber - 1;

                        AnswerSheet choosedAnswerSheet = answerList[choosedAnswerListIndex];

                        if (answersListbox.SelectedItems.Contains(choosedAnswerSheet))
                        {
                            answersListbox.SelectedItems.Remove(choosedAnswerSheet);
                        }
                        else
                        {
                            answersListbox.SelectedItems.Add(choosedAnswerSheet);

                            UncheckOverreplies();
                        }

                        dataContext.SelectedAnswers = answersListbox.SelectedItems;
                    }
                }
            }

            // Got focus again on the whole UserControl

            UserControl quizScreenUserControl = this.FindControl <UserControl>("quizScreenUserControl");

            quizScreenUserControl.Focus();

            e.Handled = true;
        }