private static object NullValueCoerceValueCallback(DependencyObject sender, object value)
{
ValueRangeTextBox valueRangeTextBox = sender as ValueRangeTextBox;
if (!valueRangeTextBox.IsInitialized)
{
return(DependencyProperty.UnsetValue);
}
if (value == null || value == DBNull.Value)
{
return(value);
}
Type valueDataType = valueRangeTextBox.ValueDataType;
if (valueDataType == null)
{
throw new InvalidOperationException("An attempt was made to set a null value when the ValueDataType property is null.");
}
if (valueRangeTextBox.IsFinalizingInitialization)
{
value = ConvertValueToDataType(value, valueRangeTextBox.ValueDataType);
}
if (value.GetType() != valueDataType)
{
throw new ArgumentException("The value is not of type " + valueDataType.Name + ".", "NullValue");
}
return(value);
}
private static void ValueDataTypePropertyChangedCallback(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
ValueRangeTextBox valueRangeTextBox = sender as ValueRangeTextBox;
Type type = e.NewValue as Type;
valueRangeTextBox.IsNumericValueDataType = IsNumericType(type);
valueRangeTextBox.RefreshConversionHelpers();
valueRangeTextBox.ConvertValuesToDataType(type);
}
private static void FormatProviderPropertyChangedCallback(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
ValueRangeTextBox valueRangeTextBox = (ValueRangeTextBox)sender;
if (valueRangeTextBox.IsInitialized)
{
valueRangeTextBox.OnFormatProviderChanged();
}
}
private static object TextCoerceValueCallback(object sender, object value)
{
ValueRangeTextBox valueRangeTextBox = sender as ValueRangeTextBox;
if (!valueRangeTextBox.IsInitialized)
{
return(DependencyProperty.UnsetValue);
}
if (value == null)
{
return(string.Empty);
}
return(value);
}
private static void NullValuePropertyChangedCallback(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
ValueRangeTextBox valueRangeTextBox = sender as ValueRangeTextBox;
if (e.OldValue == null)
{
if (valueRangeTextBox.Value == null)
{
valueRangeTextBox.RefreshValue();
}
}
else if (e.OldValue.Equals(valueRangeTextBox.Value))
{
valueRangeTextBox.RefreshValue();
}
}
private static void ValuePropertyChangedCallback(object sender, DependencyPropertyChangedEventArgs e)
{
ValueRangeTextBox valueRangeTextBox = sender as ValueRangeTextBox;
if (!valueRangeTextBox.IsForcingValue && !object.Equals(e.NewValue, e.OldValue))
{
valueRangeTextBox.IsInValueChanged = true;
try
{
valueRangeTextBox.Text = valueRangeTextBox.GetTextFromValue(e.NewValue);
}
finally
{
valueRangeTextBox.IsInValueChanged = false;
}
}
}
private static object ValueCoerceValueCallback(object sender, object value)
{
ValueRangeTextBox valueRangeTextBox = sender as ValueRangeTextBox;
if (!valueRangeTextBox.IsInitialized)
{
return(DependencyProperty.UnsetValue);
}
if (valueRangeTextBox.IsFinalizingInitialization)
{
value = ConvertValueToDataType(value, valueRangeTextBox.ValueDataType);
}
if (!valueRangeTextBox.IsForcingValue)
{
valueRangeTextBox.ValidateValue(value);
}
return(value);
}
private static object ValueDataTypeCoerceValueCallback(DependencyObject sender, object value)
{
ValueRangeTextBox valueRangeTextBox = sender as ValueRangeTextBox;
if (valueRangeTextBox.IsInitialized)
{
Type type = value as Type;
try
{
valueRangeTextBox.ValidateDataType(type);
return(value);
}
catch (Exception innerException)
{
throw new ArgumentException("An error occured while trying to change the ValueDataType.", innerException);
}
}
return(DependencyProperty.UnsetValue);
}
private static object MaxValueCoerceValueCallback(DependencyObject sender, object value)
{
ValueRangeTextBox valueRangeTextBox = sender as ValueRangeTextBox;
if (!valueRangeTextBox.IsInitialized)
{
return(DependencyProperty.UnsetValue);
}
if (value == null)
{
return(value);
}
Type valueDataType = valueRangeTextBox.ValueDataType;
if (valueDataType == null)
{
throw new InvalidOperationException("An attempt was made to set a maximum value when the ValueDataType property is null.");
}
if (valueRangeTextBox.IsFinalizingInitialization)
{
value = ConvertValueToDataType(value, valueRangeTextBox.ValueDataType);
}
if (value.GetType() != valueDataType)
{
throw new ArgumentException("The value is not of type " + valueDataType.Name + ".", "MinValue");
}
IComparable comparable = value as IComparable;
if (comparable == null)
{
throw new InvalidOperationException("MaxValue does not implement the IComparable interface.");
}
object minValue = valueRangeTextBox.MinValue;
valueRangeTextBox.ValidateValueInRange(minValue, value, valueRangeTextBox.Value);
return(value);
}
