protected override bool Convert(T value, ComparisonConverterParameter <T> parameter, CultureInfo culture)
{
Comparison result = parameter.Compare(value);
switch (result)
{
case Comparison.Equal:
switch (parameter.ExpectedComparisonResult)
{
case Diagnostics.Comparison.Equal:
case Diagnostics.Comparison.LesserOrEqual:
case Diagnostics.Comparison.GreaterOrEqual:
return(true);
}
return(false);
case Comparison.Lesser:
switch (parameter.ExpectedComparisonResult)
{
case Diagnostics.Comparison.Lesser:
case Diagnostics.Comparison.LesserOrEqual:
case Diagnostics.Comparison.NotEqual:
return(true);
}
return(false);
case Comparison.Greater:
switch (parameter.ExpectedComparisonResult)
{
case Diagnostics.Comparison.Greater:
case Diagnostics.Comparison.GreaterOrEqual:
case Diagnostics.Comparison.NotEqual:
return(true);
}
return(false);
case Comparison.NotEqual:
return(parameter.ExpectedComparisonResult == Diagnostics.Comparison.NotEqual);
case Comparison.ReferenceEqual:
return(parameter.ExpectedComparisonResult == Diagnostics.Comparison.ReferenceEqual);
}
throw new InvalidOperationException(WinCopies.
#if !WinCopies3
Util.
#endif
Desktop.Resources.ExceptionMessages.ComparisonResultReturnedByParameterIsNotSupported);
}
protected override T ConvertBack(bool value, ComparisonConverterParameter <T> parameter, CultureInfo culture) => throw new InvalidOperationException();