internal static bool TryInvestigate(PropertyInfo propertyInfo, object rawobj, out Preference itemToAttatch)
{
PreferenceCharacteristicsAttribute characteristics = null;
PreferenceTypeAttribute type = null;
PreferenceRelationAttribute relation = null;
itemToAttatch = null;
//Get the custom prperties of the the property
var customAttributes = Attribute.GetCustomAttributes(propertyInfo).ToList();
foreach (Attribute customAttribute in customAttributes)
{
DetermineAttributeType(ref characteristics, ref type, ref relation, customAttribute);
}
//If the property has no characteristics it is not to be added.
if (characteristics == null)
{
return(false);
}
//Try to get the Preference from the PropertyType
if (type == null)
{
type = PreferenceTypeAttribute.TryGetPreferenceType(propertyInfo.PropertyType);
}
//
if (type == null)
{
throw new PreferenceInvestigationException("There is no PreferenceTypeAttribute given for this Preference.", rawobj, propertyInfo);
}
if (!PreferenceTypeAttribute.IsSupportedType(propertyInfo.PropertyType))
{
throw new PreferenceInvestigationException("The used PreferenceTypeAttribute (" + type.GetType().Name + ") " +
"can not be used with with the type (" + propertyInfo.PropertyType + ").",
rawobj, propertyInfo);
}
itemToAttatch = new Preference(rawobj, propertyInfo, characteristics, type, relation);
return(true);
}
private static void DetermineAttributeType(ref PreferenceCharacteristicsAttribute characteristics,
ref PreferenceTypeAttribute type,
ref PreferenceRelationAttribute relation,
Attribute customAttribute)
{
if (customAttribute is IPreferenceCharacteristics)
{
if (@characteristics == null)
{
@characteristics = (PreferenceCharacteristicsAttribute)customAttribute;
}
else
{
throw new PreferenceAttributeParseException("Unerlaubter Mehrfach-Eintrag des SettingsEntry-Attributes", @characteristics);
}
}
else if (customAttribute is PreferenceTypeAttribute)
{
if (@type == null)
{
@type = (PreferenceTypeAttribute)customAttribute;
}
else
{
throw new PreferenceAttributeParseException("Unerlaubter Mehrfach-Eintrag des SettingsType-Attributes", @type);
}
}
else if (customAttribute == null)
{
if (@relation == null)
{
@relation = (PreferenceRelationAttribute)customAttribute;
}
else
{
throw new PreferenceAttributeParseException("Unerlaubter Mehrfach-Eintrag des SettingsType-Attributes", @relation);
}
}
}
public PreferenceAttributeParseException(string message, PreferenceRelationAttribute relation) : base(message)
{
}
private Preference(object rawObj, PropertyInfo property,
PreferenceCharacteristicsAttribute entry, PreferenceTypeAttribute type, PreferenceRelationAttribute relation)
{
_assembly = property.Module.Assembly;
_preferenceCharasteristice = entry;
_preferenceType = type;
_propertyInfo = property;
_object = rawObj;
}
