public BindingDescription SerializableBindingToBinding(string targetName,
SerializableBindingDescription description)
{
return(new BindingDescription
{
TargetName = targetName,
Source = SourceStepDescriptionFrom(description),
Mode = description.Mode,
});
}
public bool TryParseBindingDescription(string text, out SerializableBindingDescription requestedDescription)
{
try
{
Reset(text);
requestedDescription = ParseBindingDescription();
return(true);
}
catch (Exception exception)
{
Log.Error("Problem parsing binding {0}", exception);
requestedDescription = null;
return(false);
}
}
private SourceStepDescription SourceStepDescriptionFrom(SerializableBindingDescription description)
{
if (description.Path != null)
{
return(new PathSourceStepDescription()
{
SourcePropertyPath = description.Path,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
if (description.Literal != null)
{
var literal = description.Literal;
if (literal == TibetBindingParser.LiteralNull)
{
literal = null;
}
return(new LiteralSourceStepDescription()
{
Literal = literal,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
if (description.Function != null)
{
// first look for a combiner with the name
var combiner = FindCombiner(description.Function);
if (combiner != null)
{
return(new CombinerSourceStepDescription()
{
Combiner = combiner,
InnerSteps = description.Sources == null
? new List <SourceStepDescription>() :
description.Sources.Select(s => SourceStepDescriptionFrom(s)).ToList(),
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
else
{
// no combiner, then drop back to looking for a converter
var converter = FindConverter(description.Function);
if (converter == null)
{
Log.Error("Failed to find combiner or converter for {0}", description.Function);
}
if (description.Sources == null || description.Sources.Count == 0)
{
Log.Error("Value Converter {0} supplied with no source", description.Function);
return(new LiteralSourceStepDescription()
{
Literal = null,
});
}
else if (description.Sources.Count > 2)
{
Log.Error("Value Converter {0} supplied with too many parameters - {1}", description.Function, description.Sources.Count);
return(new LiteralSourceStepDescription()
{
Literal = null,
});
}
else
{
return(new CombinerSourceStepDescription()
{
Combiner = new ValueConverterValueCombiner(converter),
InnerSteps = description.Sources.Select(SourceStepDescriptionFrom).ToList(),
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
}
}
// this probably suggests that the path is the entire source object
return(new PathSourceStepDescription()
{
SourcePropertyPath = null,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
