private void CoursesBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
//If the user has data need to be saved. we should alert the user.
if (mFirstBindCourse)
{
mFirstBindCourse = false;
}
else
{
if (CourseCardsViewModel.getInstance().currentCourseCardsContentHasChanged())
{
if (!mHasShowedCourseAlertMessage)
{
showAlertCourseMessaageToUser();
CoursesBox.SelectedIndex = CourseCardsViewModel.getInstance().getCourseIndexById();
}
}
else
{
Object courseCardsSelectedValue = CoursesBox.SelectedValue;//Void the NPE
if (courseCardsSelectedValue != null)
{
CourseCardsViewModel.getInstance().selectedCourseid = (int)courseCardsSelectedValue;
}
CourseCardsViewModel.getInstance().refreshCourseCards();
allCourseCardsListView.ItemsSource = CourseCardsViewModel.getInstance().currentCourseCards;
}
}
mHasShowedCourseAlertMessage = false;
}
private void ClassesBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
//If the user has data need to be saved. we should alert the user.
if (mFirstBindClass)
{
mFirstBindClass = false;
}
else
{
if (CourseCardsViewModel.getInstance().currentCourseCardsContentHasChanged())
{
if (!mHasShowedClassAlertMessage)
{
showAlertClassMessaageToUser();//don't care the result.
ClassesBox.SelectedIndex = CourseCardsViewModel.getInstance().getClassIndexById();
}
}
else
{
Object classBoxSelectedValue = ClassesBox.SelectedValue;//Void the NPE.
if (classBoxSelectedValue != null)
{
CourseCardsViewModel.getInstance().selectedClassid = ((int)ClassesBox.SelectedValue);
}
CourseCardsViewModel.getInstance().refreshCourseGroupsData();
CoursesBox.ItemsSource = CourseCardsViewModel.getInstance().courseGroups;
CoursesBox.SelectedIndex = 0;
allCourseCardsListView.ItemsSource = CourseCardsViewModel.getInstance().currentCourseCards;
}
}
mHasShowedClassAlertMessage = false;
}
void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
ClassesBox.ItemsSource = CourseCardsViewModel.getInstance().classes;
CoursesBox.ItemsSource = CourseCardsViewModel.getInstance().courseGroups;
ClassesBox.SelectedIndex = CourseCardsViewModel.getInstance().getClassIndexById();
CoursesBox.SelectedIndex = 0;
allCourseCardsListView.ItemsSource = CourseCardsViewModel.getInstance().currentCourseCards;
}
private void AddCourseCard_Click(object sender, RoutedEventArgs e)
{
CourseCardsViewModel.getInstance().addCourseCard();
//It's a very smart function. if The user add item.
allCourseCardsListView.ItemsSource = CourseCardsViewModel.getInstance().currentCourseCards;
allCourseCardsListView.Items.MoveCurrentToLast();
allCourseCardsListView.ScrollIntoView(allCourseCardsListView.Items.CurrentItem);
}
//Do the logic to judge the click is long or short?
protected async void ListViewItem_PreviewMouseDown(object sender, MouseButtonEventArgs e)
{
bool isLongPress = await HelperJudgeLongClick.MouseDown(e.Source as FrameworkElement, TimeSpan.FromSeconds(3));
if (isLongPress)
{
// long press
MessageBoxResult result = MessageBox.Show("你将删除如下课程卡：" + "\n" + currentCourseCard.time + "\n" + currentCourseCard.name,
"确认对话框", MessageBoxButton.YesNo);
if (result == MessageBoxResult.Yes)
{
CourseCardsViewModel.getInstance().removeCourseCard(currentCourseCard);
}
else if (result == MessageBoxResult.No)
{
//do nothing.
}
}
else
{
//short press--> do nothing.
}
}
private void SaveCourseCards_Click(object sender, RoutedEventArgs e)
{
CourseCardsViewModel.getInstance().saveCurrentCourseCards();
}
void worker_DoWork(object sender, DoWorkEventArgs e)
{
CourseCardsViewModel.getInstance().initData();
}
