public ElementInitializer(XamlElement element)
{
elementType = element.GetElementType();
namespaces = element.Namespaces;
memberInitializers = CreateMemberInitializers(element);
contentInitializer = CreateContentInitializer(element);
nameDirectiveValue = GetNameDirectiveValue(element);
nameProperty = GetNameProperty(element.GetElementType());
}
private static IElementFactory GetDeferredKeyFactory(XamlElement xamlElement)
{
Type elementType = xamlElement.GetElementType();
IDeferredValueKeyProvider provider = DeferredValueKeyProviders.GetDeferredValueKeyProvider(elementType);
if (provider != null)
{
return(new DeferredKeyFactory(provider, xamlElement));
}
string keyPropertyName = DictionaryKeyPropertyAttribute.GetPropertyName(elementType);
if (!keyPropertyName.IsNullOrWhiteSpace())
{
XamlMember keyMember = xamlElement.Members.FirstOrDefault(member => member.Name.LocalName == keyPropertyName);
if (keyMember != null)
{
IPropertyAdapter keyProperty = PropertyAdapter.CreateAdapter(elementType, keyPropertyName);
return(ElementFactory.FromValue(keyMember.Values.Single(), keyProperty.PropertyType, xamlElement.Namespaces, xamlElement.SourceUri));
}
}
return(null);
}
private static IElementFactory FromXamlElementContent(XamlElement element)
{
if (element.Members.Any())
{
throw new Granular.Exception("Element \"{0}\" can't have members, as it's not a collection type and does not declare ContentProperty and can only be converted from its content", element.Name);
}
if (element.Values.Count() > 1)
{
throw new Granular.Exception("Element \"{0}\" can't have multiple children, as it's not a collection type and does not declare ContentProperty and can only be converted from its content", element.Name);
}
return(FromValue(element.Values.First(), element.GetElementType(), element.Namespaces, element.SourceUri));
}
public static IElementFactory FromXamlElement(XamlElement element, Type targetType)
{
Type elementType = element.GetElementType();
if (element.Values.Any() && ContentPropertyAttribute.GetPropertyName(elementType).IsNullOrEmpty() && !ElementCollectionContentInitailizer.IsCollectionType(elementType))
{
return(FromElementFactory(FromXamlElementContent(element), targetType, element.Namespaces, element.SourceUri));
}
IElementInitializer elementInitializer = new ElementInitializer(element);
IElementFactory elementFactory = new ElementFactory(elementType, elementInitializer);
return(FromElementFactory(elementFactory, targetType, element.Namespaces, element.SourceUri));
}
public static IElementFactory FromXamlElement(XamlElement element, Type targetType)
{
Type elementType = element.GetElementType();
if (elementType.GetDefaultConstructor() == null)
{
return(FromElementFactory(FromXamlElementContent(element), targetType, element.Namespaces));
}
IElementInitializer elementInitializer = new ElementInitializer(element);
IElementFactory elementFactory = new ElementFactory(elementType, elementInitializer);
return(FromElementFactory(elementFactory, targetType, element.Namespaces));
}
private static IElementInitializer CreateContentInitializer(XamlElement element)
{
Type elementType = element.GetElementType();
string contentPropertyName = PropertyAttribute.GetPropertyName <ContentPropertyAttribute>(elementType);
if (!contentPropertyName.IsNullOrEmpty())
{
return(ElementMemberInitializer.Create(new XamlName(contentPropertyName), elementType, element.Values, element.Namespaces));
}
if (ElementCollectionContentInitailizer.IsCollectionType(elementType))
{
return(ElementCollectionContentInitailizer.Create(element.Values, elementType));
}
return(null);
}
private static IEnumerable <IElementInitializer> CreateMemberInitializers(XamlElement element)
{
Type elementType = element.GetElementType();
List <IElementInitializer> list = new List <IElementInitializer>();
int index = 0;
foreach (XamlMember member in element.Members)
{
// markup extensions may contain members with an empty name, the name should be resolved from the member index
XamlName memberName = member.Name.IsEmpty ? GetParameterName(elementType, index) : member.Name;
list.Add(ElementMemberInitializer.Create(memberName, elementType, member.Values, member.Namespaces));
index++;
}
return(list);
}
private static IElementFactory FromXamlElementContent(XamlElement element)
{
if (element.Members.Any())
{
throw new Granular.Exception("Element \"{0}\" can't have members, as its type doesn't have a default constructor and it can only be converted from its content", element.Name);
}
if (!element.Values.Any())
{
throw new Granular.Exception("Element \"{0}\" must have a value, as its type doesn't have a default constructor and it can only be converted from its content", element.Name);
}
if (element.Values.Count() > 1)
{
throw new Granular.Exception("Element \"{0}\" can't have multiple children, as its type doesn't have a default constructor and it can only be converted from its content", element.Name);
}
return(FromValue(element.Values.First(), element.GetElementType(), element.Namespaces));
}
