/// <inheritdoc/>
public void OnNext(object value)
{
using (_inner.Subscribe(_ => { }))
{
var type = _inner.ResultType;
if (type != null)
{
var converted = Converter.ConvertBack(
value,
type,
ConverterParameter,
CultureInfo.CurrentCulture);
if (converted == AvaloniaProperty.UnsetValue)
{
converted = TypeUtilities.Default(type);
_inner.SetValue(converted, _priority);
}
else if (converted is BindingNotification)
{
var notification = converted as BindingNotification;
if (notification.ErrorType == BindingErrorType.None)
{
throw new AvaloniaInternalException(
"IValueConverter should not return non-errored BindingNotification.");
}
_errors.OnNext(notification);
if (_fallbackValue != AvaloniaProperty.UnsetValue)
{
if (TypeUtilities.TryConvert(
type,
_fallbackValue,
CultureInfo.InvariantCulture,
out converted))
{
_inner.SetValue(converted, _priority);
}
else
{
Logger.Error(
LogArea.Binding,
this,
"Could not convert FallbackValue {FallbackValue} to {Type}",
_fallbackValue,
type);
}
}
}
else
{
_inner.SetValue(converted, _priority);
}
}
}
}
/// <inheritdoc/>
public void OnNext(object value)
{
var type = _inner.ResultType;
if (type != null)
{
var converted = Converter.ConvertBack(
value,
type,
ConverterParameter,
CultureInfo.CurrentUICulture);
if (converted == AvaloniaProperty.UnsetValue)
{
converted = TypeUtilities.Default(type);
_inner.SetValue(converted, _priority);
}
else if (converted is BindingError)
{
var error = converted as BindingError;
Logger.Error(
LogArea.Binding,
this,
"Error binding to {Expression}: {Message}",
_inner.Expression,
error.Exception.Message);
if (_fallbackValue != null)
{
if (TypeUtilities.TryConvert(
type,
_fallbackValue,
CultureInfo.InvariantCulture,
out converted))
{
_inner.SetValue(converted, _priority);
}
else
{
Logger.Error(
LogArea.Binding,
this,
"Could not convert FallbackValue {FallbackValue} to {Type}",
_fallbackValue,
type);
}
}
}
else
{
_inner.SetValue(converted, _priority);
}
}
}