private static decimal LimitValueByBounds(decimal newValue, SpinnerControlOnlySupportUpDowmKey control)
{
newValue = Math.Max(control.Minimum, Math.Min(control.Maximum, newValue));
// then ensure the number of decimal places is correct.
newValue = Decimal.Round(newValue, control.DecimalPlaces);
return(newValue);
}
protected static void OnDecreaseCommand(Object sender, ExecutedRoutedEventArgs e)
{
SpinnerControlOnlySupportUpDowmKey control = sender as SpinnerControlOnlySupportUpDowmKey;
if (control != null)
{
control.OnDecrease();
}
}
private static object CoerceValue(DependencyObject obj, object value)
{
decimal newValue = (decimal)value;
SpinnerControlOnlySupportUpDowmKey control = obj as SpinnerControlOnlySupportUpDowmKey;
if (control != null)
{
// ensure that the value stays within the bounds of the minimum and
// maximum values that we define.
newValue = LimitValueByBounds(newValue, control);
}
return(newValue);
}
private static void OnValidationHasErrorPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
SpinnerControlOnlySupportUpDowmKey control = sender as SpinnerControlOnlySupportUpDowmKey;
if (control != null)
{
var newValue = (bool)args.NewValue;
var oldValue = (bool)args.OldValue;
RoutedPropertyChangedEventArgs <bool> e =
new RoutedPropertyChangedEventArgs <bool>(oldValue, newValue, ValidationHasErrorEvent);
control.OnValidationHasErrorPropertyChanged(e);
}
}
private static void OnFormattedValueChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
SpinnerControlOnlySupportUpDowmKey control = obj as SpinnerControlOnlySupportUpDowmKey;
Decimal number;
if (control != null)
{
string newValue = (string)args.NewValue;
string oldValue = (string)args.OldValue;
if (Decimal.TryParse(newValue, out number))
{
control.Value = number;
}
}
}
/// <summary>
/// If the value changes, update the text box that displays the Value
/// property to the consumer.
/// </summary>
/// <param name="obj"></param>
/// <param name="args"></param>
private static void OnValueChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
SpinnerControlOnlySupportUpDowmKey control = obj as SpinnerControlOnlySupportUpDowmKey;
if (control != null)
{
var newValue = (decimal)args.NewValue;
var oldValue = (decimal)args.OldValue;
control.UpdateFormattedValue(newValue);
RoutedPropertyChangedEventArgs <decimal> e =
new RoutedPropertyChangedEventArgs <decimal>(oldValue, newValue, ValueChangedEvent);
control.OnValueChanged(e);
}
}
