public static TypeConverter GetPropertyTypeConverter(PropertyInfo propertyInfo)
{
foreach (object attribute in propertyInfo.GetCustomAttributes(typeof(TypeConverterAttribute), false))
{
TypeConverterAttribute attr = attribute as TypeConverterAttribute;
if (!attr.IsDefaultAttribute())
{
try
{
var converter = Activator.CreateInstance(Type.GetType(attr.ConverterTypeName))
as TypeConverter;
return(converter);
}
catch { }
}
}
return(null);
}
/// <summary>
/// Factory method that creates the option item using the provided parameters.
/// </summary>
protected virtual IOptionItem CreateItem(IOptionBuilderContext context, PropertyInfo propertyInfo, Type type,
string description, object value)
{
IOptionItem item = null;
// if (type.IsEnum) {
// Type genericType = typeof (GenericOptionItem<>);
// Type newType = genericType.MakeGenericType(type);
// item = newType.GetConstructor(new Type[] {typeof (string)}).Invoke(new object[] {description}) as IOptionItem;
// } else if (type == typeof (Color)) {
// item = new ColorOptionItem(description);
// } else
if (type.IsGenericType && type.GetGenericTypeDefinition().IsAssignableFrom((typeof(ICollection <>))))
{
Type[] types = type.GetGenericArguments();
if (types.Length == 1)
{
Type collectionItemType = types[0];
Type collectionBaseType = typeof(ICollection <>);
Type collectionType = collectionBaseType.MakeGenericType(collectionItemType);
Type collectionOptionItemType = typeof(CollectionOptionItem <>);
item = collectionOptionItemType.MakeGenericType(collectionItemType).GetConstructor(
new Type[] { typeof(string), collectionType }).Invoke(new object[] { description, value }) as
IOptionItem;
}
}
if (item == null)
{
if (type.IsValueType)
{
if (IsNullable(type))
{
item = new OptionItem()
{
Type = Nullable.GetUnderlyingType(type), Name = description
};
item.Attributes[OptionItem.SupportNullValueAttribute] = true;
}
else if (IsNullable(propertyInfo.PropertyType))
{
item = new OptionItem()
{
Type = type, Name = description
};
item.Attributes[OptionItem.SupportNullValueAttribute] = true;
}
else
{
item = new OptionItem()
{
Type = type, Name = description
};
item.Attributes[OptionItem.SupportNullValueAttribute] = false;
}
}
else
{
item = new OptionItem()
{
Type = type, Name = description
};
}
}
var customAttributes = Attribute.GetCustomAttributes(propertyInfo);
foreach (var attribute in customAttributes.OfType <OptionItemAttributeAttribute>())
{
item.Attributes[attribute.Name] = attribute.Value;
}
TypeConverterAttribute converter = GetAttribute <TypeConverterAttribute>(propertyInfo);
if (converter != null && !converter.IsDefaultAttribute())
{
try {
Type typeConverter = Type.GetType(converter.ConverterTypeName);
if (typeConverter != null)
{
item.Attributes[OptionItem.CustomTypeConverterAttribute] = typeConverter;
}
} catch (Exception e) {
Trace.WriteLine("Could not load custom type converter " + e.Message);
}
}
return(item);
}
/// <summary>
/// Factory method that creates the option item using the provided parameters.
/// </summary>
protected virtual IOptionItem CreateItem(IOptionBuilderContext context, PropertyInfo propertyInfo, Type type,
string description, object value)
{
IOptionItem item = null;
if (type.IsEnum)
{
Type genericType = typeof(GenericOptionItem <>);
Type newType = genericType.MakeGenericType(type);
item = newType.GetConstructor(new Type[] { typeof(string) }).Invoke(new object[] { description }) as IOptionItem;
}
else if (type == typeof(Color))
{
item = new ColorOptionItem(description);
}
else if (type.IsGenericType && type.GetGenericTypeDefinition().IsAssignableFrom((typeof(ICollection <>))))
{
Type[] types = type.GetGenericArguments();
if (types.Length == 1)
{
Type collectionItemType = types[0];
Type collectionBaseType = typeof(ICollection <>);
Type collectionType = collectionBaseType.MakeGenericType(collectionItemType);
Type collectionOptionItemType = typeof(CollectionOptionItem <>);
item = collectionOptionItemType.MakeGenericType(collectionItemType).GetConstructor(
new Type[] { typeof(string), collectionType }).Invoke(new object[] { description, value }) as
IOptionItem;
}
}
if (item == null)
{
if (type == typeof(double))
{
item = new DoubleOptionItem(description);
}
else if (type == typeof(int))
{
item = new IntOptionItem(description);
}
else if (type == typeof(float))
{
item = new FloatOptionItem(description);
}
else if (type == typeof(bool))
{
item = new BoolOptionItem(description);
}
else if (type == typeof(string))
{
item = new StringOptionItem(description);
}
else
{
Type genericType = typeof(GenericOptionItem <>);
Type newType = genericType.MakeGenericType(type);
item =
newType.GetConstructor(new Type[] { typeof(string) }).Invoke(new object[] { description }) as IOptionItem;
}
}
if (item != null)
{
TypeConverterAttribute converter = GetAttribute <TypeConverterAttribute>(propertyInfo);
if (converter != null && !converter.IsDefaultAttribute())
{
try {
Type typeConverter = Type.GetType(converter.ConverterTypeName);
if (typeConverter != null)
{
item.SetAttribute(OptionItem.CUSTOM_CONVERTER_ATTRIBUTE, typeConverter);
}
} catch (Exception e) {
Trace.WriteLine("Could not load custom type converter " + e.Message);
}
}
//by default, value types are not nullable
if (type.IsValueType)
{
item.SetAttribute(OptionItem.SUPPORT_NULL_VALUE_ATTRIBUTE, false);
}
}
return(item);
}
