public virtual void LoadFromXml(XmlNode node)
{
PropertyName = XmlUtil.GetAttribute(node, XMLATT_typeName);
XmlNode childNode = node.SelectSingleNode(XML_Child);
if (childNode != null)
{
Type t = XmlUtil.GetLibTypeAttribute(childNode);
MathPropertyPointer cmp = (MathPropertyPointer)Activator.CreateInstance(t);
Child = cmp;
cmp.LoadFromXml(childNode);
}
}
public override Object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
{
string sv = value as string;
if (sv != null && context != null)
{
MathPropertyPointer pv = context.PropertyDescriptor.GetValue(context.Instance) as MathPropertyPointer;
if (pv != null)
{
if (sv.Length == 0)
{
pv = new MathPropertyPointerConstant();
context.PropertyDescriptor.SetValue(context.Instance, pv);
}
else
{
MathPropertyPointerConstant mpc = pv as MathPropertyPointerConstant;
if (mpc != null)
{
mpc.Instance = sv;
}
else
{
if (string.IsNullOrEmpty(pv.PropertyName))
{
pv = new MathPropertyPointerConstant();
pv.Instance = sv;
}
}
}
return(pv);
}
else
{
context.PropertyDescriptor.SetValue(context.Instance, value);
}
return(value);
}
else
{
return(base.ConvertFrom(context, culture, value));
}
}
public void LoadFromString(string data)
{
if (string.IsNullOrEmpty(data))
{
throw new MathException("cannot call LoadFromString with null");
}
data = data.Trim();
if (string.IsNullOrEmpty(data))
{
throw new MathException("cannot call LoadFromString with empty data");
}
int pos = data.IndexOf('.');
if (pos >= 0)
{
if (pos == 0)
{
throw new MathException("Invalid data [{0}] calling LoadFromString", data);
}
string s = data.Substring(0, pos);
s = s.Trim();
if (string.IsNullOrEmpty(s))
{
throw new MathException("Invalid data [{0}] calling LoadFromString. ", data);
}
PropertyName = s;
data = data.Substring(pos + 1);
data = data.Trim();
if (!string.IsNullOrEmpty(data))
{
_child = new MathPropertyPointer();
_child.LoadFromString(data);
}
}
else
{
PropertyName = data;
}
}
