private XElement WriteValue(string elementName, SerializeAttribute serializeAttribute, object value, params object[] content)
{
if (value == null) throw new ArgumentNullException("value");
XElement element;
Type type = value.GetType();
int refID = _visitedObjects.FindRefID(value);
if (refID >= 0)
{
element = new XElement(elementName, content, new XAttribute(XmlConstants.REF, refID.ToString(CultureInfo.InvariantCulture)));
if (serializeAttribute != null && serializeAttribute.ConstructorArgumentIndex >= 0)
element.Add(new XAttribute(XmlConstants.ARG, serializeAttribute.ConstructorArgumentIndex));
return element;
}
element = CreateElement(elementName, value, serializeAttribute, content);
if (serializeAttribute != null && serializeAttribute.Formatter != null)
{
element.Add(GetFormattedValue(serializeAttribute.Formatter, value));
}
else if (type.IsPrimitive)
{
element.Add(new XAttribute(XmlConstants.VALUE, Convert.ToString(value, CultureInfo.InvariantCulture)));
}
else if (type.IsEnum)
{
element.Add(new XAttribute(XmlConstants.VALUE, value.ToString()));
}
else if (value is string)
{
element.Add(new XAttribute(XmlConstants.VALUE, XmlHelper.EscapeInvalidCharacters((string)value)));
}
else if (typeof(IDictionary).IsAssignableFrom(type))
{
WriteDictionaryElements(element, (IDictionary)value);
}
else if (typeof(IList).IsAssignableFrom(type) || typeof(ICollection).IsAssignableFrom(type))
{
WriteListElements(element, (IEnumerable)value);
}
else if (type == typeof(Color))
{
element.Add(new XAttribute(XmlConstants.VALUE, ColorTranslator.ToHtml((Color)value)));
}
else if (type == typeof(PointF))
{
PointF p = (PointF)value;
element.Add(new XAttribute(XmlConstants.VALUE, XmlHelper.EscapeInvalidCharacters(p.X + "|" + p.Y)));
}
else
{
var map = SerializationMap.FromType(value.GetType());
WriteMembers(element, map.Members, value);
}
return element;
}
/// <summary>
/// Creates a new SerializationMapEntry instance.
/// </summary>
/// <param name="memberInfo">Info about the field or property to serialize.</param>
/// <param name="attribute">Details about how to serialize this member.</param>
public SerializationMapEntry(MemberInfo memberInfo, SerializeAttribute attribute)
{
Member = memberInfo;
Attribute = attribute;
}
private XElement CreateElement(string elementName, object value, SerializeAttribute attribute, params object[] content)
{
Type type = value.GetType();
var result = new XElement(elementName, content);
result.Add(new XAttribute(XmlConstants.TYPE_ID, GetTypeID(type).ToString()));
if (attribute != null && attribute.ConstructorArgumentIndex >= 0)
result.Add(new XAttribute(XmlConstants.ARG, attribute.ConstructorArgumentIndex));
if (!type.IsValueType && !type.Equals(typeof(string))) // Don't cache value types or strings
_visitedObjects.Add(value, result);
return result;
}