private static void OnValueChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
RadRating rating = sender as RadRating;
if (rating.settingValuePropertySilently)
{
return;
}
if (!rating.IsTemplateApplied)
{
return;
}
double oldValue = (double)args.OldValue;
double newValue = RadMath.CoerceValue((double)args.NewValue, 0, rating.itemsSource.Count);
if (newValue != rating.Value)
{
rating.SetValuePropertySilently(ValueProperty, newValue);
}
if (newValue != oldValue)
{
rating.HandleValueChange(oldValue, newValue);
}
}
private static void OnRatingDisplayPrecisionChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
RadRating rating = sender as RadRating;
rating.UpdateDisplayValue();
rating.UpdateFillRatio();
}
private void Initialize()
{
if (this.Owner == null)
{
RadRating parent = ElementTreeHelper.FindVisualAncestor <RadRating>(this);
if (parent == null)
{
throw new InvalidOperationException(InvalidOwnerException);
}
this.Owner = parent;
}
}
private static void OnCommandChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
RadRating rating = sender as RadRating;
if (rating.canExecuteChangedHandler != null)
{
rating.canExecuteChangedHandler.Unsubscribe();
}
System.Windows.Input.ICommand command = args.NewValue as System.Windows.Input.ICommand;
if (command != null)
{
rating.canExecuteChangedHandler = new WeakEventHandler <EventArgs>(command, rating, KnownEvents.CanExecuteChanged);
rating.UpdateIsReadOnlyFromCommand();
}
}
private static void OnAutoGeneratedItemsCountChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
RadRating rating = sender as RadRating;
if (!rating.IsTemplateApplied)
{
return;
}
if ((int)args.OldValue == 0 && rating.itemsSource.Count != 0)
{
throw new InvalidOperationException(AutoGeneratedItemsCountExceptionMessage);
}
rating.isItemsSourceChangedSilently = true;
rating.itemsSource.Clear();
int newValue = (int)args.NewValue;
if (newValue <= 0)
{
rating.AutoGeneratedItemsCount = 0;
}
else
{
rating.GenerateRatingItems();
double coercedValue = RadMath.CoerceValue(rating.Value, 0, rating.itemsSource.Count);
if (rating.Value != coercedValue)
{
rating.SetValuePropertySilently(ValueProperty, coercedValue);
rating.UpdateDisplayValue();
rating.UpdateFillRatio();
}
}
rating.isItemsSourceChangedSilently = false;
rating.PopulateRatingPanel();
}
private static void OnRatingSelectionModeChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
RadRating rating = sender as RadRating;
rating.UpdateFillRatio();
}
private static void OnCommandParameterChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
RadRating rating = sender as RadRating;
rating.UpdateIsReadOnlyFromCommand();
}
