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);
}
public ElementInitializer(XamlElement element)
{
elementType = element.GetElementType();
namespaces = element.Namespaces;
memberInitializers = CreateMemberInitializers(element);
contentInitializer = CreateContentInitializer(element);
nameDirectiveValue = GetNameDirectiveValue(element);
nameProperty = GetNameProperty(element.GetElementType());
}
private XamlElement Parse()
{
this.tokens = new ReadOnlyStack <Token>(lexer.GetTokens(text));
XamlElement root = MatchElement();
if (!tokens.IsEmpty)
{
throw new Granular.Exception("Can't parse \"{0}\", end of stream is expected at index {1}", text, tokens.Peek().Start);
}
return(root);
}
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 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));
}
private static IEnumerable <IElementInitializer> CreateMemberInitializers(XamlElement element, Type elementType)
{
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.ResolveContainingType(elementType), memberName.MemberName, member.Values, member.Namespaces, member.SourceUri));
index++;
}
return(list);
}
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 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));
}
private static IElementInitializer CreateContentInitializer(XamlElement element, Type elementType)
{
if (!element.Values.Any())
{
return(null);
}
string contentPropertyName = ContentPropertyAttribute.GetPropertyName(elementType);
if (!contentPropertyName.IsNullOrEmpty())
{
return(ElementMemberInitializer.Create(elementType, contentPropertyName, element.Values, element.Namespaces, element.SourceUri));
}
if (ElementCollectionContentInitailizer.IsCollectionType(elementType))
{
return(ElementCollectionContentInitailizer.Create(element.Values, elementType));
}
throw new Granular.Exception("Cannot add content to element of type \"{0}\" as it's not a collection type and does not declare ContentProperty", elementType.Name);
}
public static void Load(object target, XamlElement resource)
{
IElementInitializer initializer = new ElementInitializer(resource);
initializer.InitializeElement(target, new InitializeContext());
}
public static object Load(XamlElement resource)
{
IElementFactory factory = ElementFactory.FromXamlElement(resource, null);
return(factory.CreateElement(new InitializeContext()));
}
public static Type GetElementType(this XamlElement element)
{
return(TypeParser.ParseType(element.Name));
}
private static IElementFactory GetKeyDirectiveFactory(XamlElement element, Type keyType)
{
XamlMember keyDirective = element.Directives.FirstOrDefault(directive => directive.Name == XamlLanguage.KeyDirective);
return(keyDirective != null?ElementFactory.FromValue(keyDirective.GetSingleValue(), keyType, element.Namespaces) : null);
}
public KeyValueElementFactory(Type keyType, IElementFactory valueFactory, XamlElement xamlElement)
{
this.valueFactory = valueFactory;
keyProperty = GetKeyProperty(valueFactory.ElementType);
keyDirectiveFactory = GetKeyDirectiveFactory(xamlElement, keyType);
if (keyDirectiveFactory == null && keyProperty == null)
{
throw new Granular.Exception("Dictionary item \"{0}\" must have a key", xamlElement.Name);
}
}
private static string GetNameDirectiveValue(XamlElement element)
{
XamlMember nameDirective = element.Directives.FirstOrDefault(directive => directive.Name == XamlLanguage.NameDirective);
return(nameDirective != null ? (string)nameDirective.GetSingleValue() : null);
}
public DeferredKeyFactory(IDeferredValueKeyProvider provider, XamlElement element)
{
this.provider = provider;
this.element = element;
}
public DeferredValueFactory(XamlElement element, Type targetType, bool isShared)
{
this.element = element;
this.targetType = targetType;
this.isShared = isShared;
}