public override bool Instantiate(IInstanceBuilderContext context, ViewNode viewNode)
{
string str;
if (viewNode.Instance == null)
{
DesignInstanceExtension instance = null;
using (IDisposable disposable = context.ChangeSerializationContext(null))
{
base.Instantiate(context, viewNode);
instance = viewNode.Instance as DesignInstanceExtension;
}
instance.Instance = null;
Type typeToInstantiate = this.GetTypeToInstantiate(context, instance, out str);
if (typeToInstantiate != null)
{
if (context.IsSerializationScope)
{
IType type = context.DocumentContext.TypeResolver.GetType(typeToInstantiate);
context.DocumentContext.CreateNode(type);
viewNode.Instance = context.DocumentContext.CreateNode(typeToInstantiate);
viewNode.InstanceState = InstanceState.Valid;
}
else
{
instance.Instance = Activator.CreateInstance(typeToInstantiate);
viewNode.Instance = instance;
viewNode.InstanceState = InstanceState.Valid;
}
}
else if (!string.IsNullOrEmpty(str))
{
context.WarningDictionary.SetWarning(viewNode, viewNode.DocumentNode, str);
}
if (viewNode.Instance == instance && instance.Instance == null)
{
viewNode.Instance = null;
viewNode.InstanceState = InstanceState.Valid;
}
}
return(viewNode.Instance != null);
}
private Type GetTypeToInstantiate(IInstanceBuilderContext context, DesignInstanceExtension designMarkupExtension, out string warning)
{
warning = null;
if (designMarkupExtension.Type == null)
{
return(null);
}
if (designMarkupExtension.IsDesignTimeCreatable && !designMarkupExtension.CreateList)
{
return(designMarkupExtension.Type);
}
if (!designMarkupExtension.IsDesignTimeCreatable && !DesignTypeInstanceBuilder.IsTypeEmittable(designMarkupExtension.Type))
{
CultureInfo currentCulture = CultureInfo.CurrentCulture;
string instanceBuilderDesignTypeCannotBeLateBound = ExceptionStringTable.InstanceBuilderDesignTypeCannotBeLateBound;
object[] name = new object[] { designMarkupExtension.Type.Name };
warning = string.Format(currentCulture, instanceBuilderDesignTypeCannotBeLateBound, name);
return(null);
}
DesignTypeResult typeToInstantiate = DesignTypeInstanceBuilder.GetTypeToInstantiate(context.DocumentContext.TypeResolver.PlatformMetadata, designMarkupExtension.Type, designMarkupExtension.CreateList, designMarkupExtension.IsDesignTimeCreatable);
if (!typeToInstantiate.IsFailed)
{
return(typeToInstantiate.DesignType);
}
if (string.IsNullOrEmpty(typeToInstantiate.Context))
{
warning = typeToInstantiate.TypeGenerationException.Message;
}
else
{
CultureInfo currentUICulture = CultureInfo.CurrentUICulture;
object[] message = new object[] { typeToInstantiate.TypeGenerationException.Message, typeToInstantiate.Context };
warning = string.Format(currentUICulture, "{0} ({1})", message);
}
return(null);
}
