/// <summary>
/// Raises an DropDownClosing event when the IsDropDownOpen property is
/// changing from true to false.
/// </summary>
/// <param name="e">
/// Provides any observers the opportunity to cancel the operation
/// and halt closing the drop down.
/// </param>
protected virtual void OnDropDownClosing(RoutedPropertyChangingEventArgs <bool> e)
{
RoutedPropertyChangingEventHandler <bool> handler = DropDownClosing;
if (handler != null)
{
handler(this, e);
}
}
protected virtual void OnValueChanging(RoutedPropertyChangingEventArgs <DateTime?> e)
{
// change is from value itself.
bool success = _timeCoercionHelper.CoerceValue(e.OldValue, e.NewValue);
if (success)
{
e.InCoercion = false;
e.NewValue = Value;
RoutedPropertyChangingEventHandler <DateTime?> handler = ValueChanging;
if (handler != null)
{
handler(this, e);
}
}
else
{
e.InCoercion = true;
}
}
