/// <summary>
/// Adds the current element to the collection of selected items.
/// </summary>
void ISelectionItemProvider.AddToSelection()
{
// Return if the item is already selected
GlobalCalendarDayButton button = OwningCalendarDayButton;
if (button.IsSelected)
{
return;
}
GlobalCalendar calendar = OwningCalendar;
DateTime? date = button.GetDateNullable();
if (EnsureSelection() && date != null)
{
if (calendar.SelectionMode == CalendarSelectionMode.SingleDate)
{
calendar.SelectedDate = date.Value;
}
else
{
calendar.SelectedDates.Add(date.Value);
}
}
}
/// <summary>
/// Clear any existing selection and then selects the current element.
/// </summary>
void ISelectionItemProvider.Select()
{
if (EnsureSelection())
{
GlobalCalendar calendar = OwningCalendar;
GlobalCalendarDayButton button = OwningCalendarDayButton;
calendar.SelectedDates.Clear();
DateTime?date = button.GetDateNullable();
if (date != null)
{
calendar.SelectedDates.Add(date.Value);
}
}
}
/// <summary>
/// Removes the current element from the collection of selected items.
/// </summary>
void ISelectionItemProvider.RemoveFromSelection()
{
// Return if the item is not already selected.
GlobalCalendarDayButton button = OwningCalendarDayButton;
if (!button.IsSelected)
{
return;
}
GlobalCalendar calendar = OwningCalendar;
DateTime? date = button.GetDateNullable();
if (calendar != null && date != null)
{
calendar.SelectedDates.Remove(date.Value);
}
}