private LinkData CreateLinkDataForSubProperties(Type type, object context, string contextInfoName, string viewElementInfoName, List <PropertyInfo> propertyPath, LinkRule rule)
{
foreach (PropertyInfo pInfo in type.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic))
{
if (!pInfo.PropertyType.IsClass || pInfo.PropertyType == typeof(string))
{
continue;
}
object subContext;
Type subType;
if (typeof(IEnumerable).IsAssignableFrom(pInfo.PropertyType))
{
// if the type is a ienurable type then set the context to null because then the linker should be only informed
// about the found members in the generic used class
subContext = null;
subType = pInfo.PropertyType.GetGenericArguments().First();
}
else if (pInfo.GetIndexParameters().Length <= 0)
{
subContext = pInfo.GetValue(context);
subType = pInfo.PropertyType;
}
else
{
subContext = null;
subType = pInfo.PropertyType;
}
LinkData data = CreateLinkData(null, rule, subType, subContext, viewElementInfoName, propertyPath, null);
// if a match found in the sub class then return the link data.
if (data != null)
{
propertyPath.Add(pInfo);
return(data);
}
}
return(null);
}
private LinkData CreateLinkData(string controlName, LinkRule rule, Type type, object context, string viewElementInfoName, List <PropertyInfo> propertyPath, object view)
{
string[] nameParts = RuleProvider.GetNameSeparatorFunc()?.Invoke(controlName ?? string.Empty) ?? null;
if (nameParts == null || nameParts.Length == 1)
{
if (string.IsNullOrEmpty(controlName))
{
return(null);
}
MemberInfo info = type.GetMember(rule.GetLinkInfoName(controlName), BindingFlags.Instance | BindingFlags.Public).FirstOrDefault();
// if there was already a match found then create a LinkData and return it
if (info != null)
{
return(new LinkData(viewElementInfoName, info, context, propertyPath));
}
propertyPath = new List <PropertyInfo>();
// if no match found then search within all properties of the passed context which are a class itself (except enumerables)
LinkData data = CreateLinkDataForSubProperties(type, context, rule.GetLinkInfoName(controlName), viewElementInfoName, propertyPath, rule);
if (data != null)
{
data.PropertyPath = data.PropertyPath?.Reverse();
}
return(data);
}
else
{
propertyPath = new List <PropertyInfo>();
Type currentType = type;
object lastControl = null;
for (int i = 0; i < nameParts.Length; i++)
{
// if the last of the name parts is reached then try to create the link data with the collected infos.
if (i == nameParts.Length - 1)
{
return(CreateLinkData(nameParts[i], rule, currentType, context, viewElementInfoName, propertyPath, view));
}
// if no last control is set then first try to find the control which is defined in this name part.
if (lastControl == null)
{
EnumerateFields(view.GetType(), info =>
{
if (info.Name == nameParts[i])
{
lastControl = info.GetValue(view);
}
});
}
else
{
// get the context property name for further search based on the last control and the current name part which must define the property of the control
// to get the context property name for further search.
string contextPropertyName = RuleProvider.GetContextPropertyNameForTypeAndProperty(lastControl.GetType(), nameParts[i], nameParts[i - 1]);
// get the property info for the context property and add it to the property path. Just assume that the property is found. It's ok if a exception occurs
// if the property could not be found because of e.g. typos.
PropertyInfo pInfo = currentType.GetProperty(contextPropertyName, BindingFlags.Instance | BindingFlags.Public);
propertyPath.Add(pInfo);
// set the current type for the next search or link creation!
currentType = pInfo.PropertyType;
lastControl = null;
}
}
}
return(null);
}
