public void Visit(ElementNode node, INode parentNode)
{
object value = null;
XamlParseException xpe;
var type = XamlParser.GetElementType(node.XmlType, node, Context.RootElement?.GetType().GetTypeInfo().Assembly,
out xpe);
if (xpe != null)
{
throw xpe;
}
Context.Types[node] = type;
string ctorargname;
if (IsXaml2009LanguagePrimitive(node))
{
value = CreateLanguagePrimitive(type, node);
}
else if (node.Properties.ContainsKey(XmlName.xArguments) || node.Properties.ContainsKey(XmlName.xFactoryMethod))
{
value = CreateFromFactory(type, node);
}
else if (
type.GetTypeInfo()
.DeclaredConstructors.Any(
ci =>
ci.IsPublic && ci.GetParameters().Length != 0 &&
ci.GetParameters().All(pi => pi.CustomAttributes.Any(attr => attr.AttributeType == typeof(ParameterAttribute)))) &&
ValidateCtorArguments(type, node, out ctorargname))
{
value = CreateFromParameterizedConstructor(type, node);
}
else if (!type.GetTypeInfo().DeclaredConstructors.Any(ci => ci.IsPublic && ci.GetParameters().Length == 0) &&
!ValidateCtorArguments(type, node, out ctorargname))
{
throw new XamlParseException(
String.Format("The Property {0} is required to create a {1} object.", ctorargname, type.FullName), node);
}
else
{
//this is a trick as the DataTemplate parameterless ctor is internal, and we can't CreateInstance(..., false) on WP7
try
{
if (type == typeof(DataTemplate))
{
value = new DataTemplate();
}
if (type == typeof(ControlTemplate))
{
value = new ControlTemplate();
}
if (value == null && node.CollectionItems.Any() && node.CollectionItems.First() is ValueNode)
{
var serviceProvider = new XamlServiceProvider(node, Context);
var converted = ((ValueNode)node.CollectionItems.First()).Value.ConvertTo(type, () => type.GetTypeInfo(),
serviceProvider);
if (converted != null && converted.GetType() == type)
{
value = converted;
}
}
if (value == null)
{
value = Activator.CreateInstance(type);
}
}
catch (TargetInvocationException e)
{
if (e.InnerException is XamlParseException || e.InnerException is XmlException)
{
throw e.InnerException;
}
throw;
}
}
Values[node] = value;
var markup = value as IMarkupExtension;
if (markup != null && (value is TypeExtension || value is StaticExtension))
{
var serviceProvider = new XamlServiceProvider(node, Context);
var visitor = new ApplyPropertiesVisitor(Context);
foreach (var cnode in node.Properties.Values.ToList())
{
cnode.Accept(visitor, node);
}
foreach (var cnode in node.CollectionItems)
{
cnode.Accept(visitor, node);
}
value = markup.ProvideValue(serviceProvider);
node.Properties.Clear();
node.CollectionItems.Clear();
Values[node] = value;
}
if (value is BindableObject)
{
NameScope.SetNameScope(value as BindableObject, node.Namescope);
}
}
