private static IEnumerable <KeyValueElementFactory> CreateElementsFactories(Type keyType, Type valueType, IEnumerable <object> values)
{
if (values.Any(value => !(value is XamlElement)))
{
throw new Granular.Exception("Can't add a value of type \"{0}\" to a dictionary, as it cannot have a key", values.First(value => !(value is XamlElement)).GetType().Name);
}
IEnumerable <XamlElement> valuesElements = values.Cast <XamlElement>();
List <KeyValueElementFactory> list = new List <KeyValueElementFactory>();
foreach (XamlElement contentChild in valuesElements)
{
bool isShared = contentChild.Directives.All(directive => directive.Name != XamlLanguage.SharedDirective || (bool)TypeConverter.ConvertValue(directive.GetSingleValue(), typeof(bool), XamlNamespaces.Empty));
IElementFactory contentChildFactory = ElementFactory.FromXamlElement(contentChild, valueType);
if (!isShared)
{
contentChildFactory = new ValueProviderFactory(contentChildFactory);
}
list.Add(new KeyValueElementFactory(keyType, contentChildFactory, contentChild));
}
return(list);
}
public object CreateElement(InitializeContext context)
{
object value = null;
return(new ValueProvider(() =>
{
if (elementFactory == null)
{
elementFactory = ElementFactory.FromXamlElement(element, targetType);
}
if (value == null || !isShared)
{
value = elementFactory.CreateElement(context);
}
return value;
}));
}
public static object Load(XamlElement resource)
{
IElementFactory factory = ElementFactory.FromXamlElement(resource, null);
return(factory.CreateElement(new InitializeContext()));
}
private static IEnumerable <KeyValueElementFactory> CreateElementsFactories(Type dictionaryType, Type keyType, Type valueType, IEnumerable <object> values)
{
if (values.Any(value => !(value is XamlElement)))
{
throw new Granular.Exception("Can't add a value of type \"{0}\" to a dictionary, as it cannot have a key", values.First(value => !(value is XamlElement)).GetType().Name);
}
IEnumerable <XamlElement> valuesElements = System.Linq.Enumerable.Cast <XamlElement>(values);
bool isValueProviderSupported = dictionaryType.GetCustomAttributes(true).OfType <SupportsValueProviderAttribute>().Any();
List <KeyValueElementFactory> list = new List <KeyValueElementFactory>();
foreach (XamlElement contentChild in valuesElements)
{
bool isShared = contentChild.Directives.All(directive => directive.Name != XamlLanguage.SharedDirective || (bool)TypeConverter.ConvertValue(directive.GetSingleValue(), typeof(bool), XamlNamespaces.Empty, null));
if (!isShared && !isValueProviderSupported)
{
throw new Granular.Exception($"Can't add a non shared value to \"{dictionaryType.FullName}\" as it does not declare a \"SupportsValueProvider\" attribute");
}
IElementFactory contentChildFactory = isValueProviderSupported ? new DeferredValueFactory(contentChild, valueType, isShared) : ElementFactory.FromXamlElement(contentChild, valueType);
list.Add(new KeyValueElementFactory(keyType, contentChildFactory, contentChild, isValueProviderSupported));
}
return(list);
}