/// <summary>
/// Creates a known element registration for the specified type.
/// </summary>
/// <param name="type">The type for which to create a registration.</param>
/// <param name="attr">The attribute that marks the type as a known type.</param>
/// <returns>The <see cref="KnownType"/> registration that was created.</returns>
private KnownType CreateKnownElementRegistration(Type type, UvmlKnownTypeAttribute attr)
{
var defaultPropertyAttr = (UvmlDefaultPropertyAttribute)type.GetCustomAttributes(typeof(UvmlDefaultPropertyAttribute), true).SingleOrDefault();
var defaultProperty = default(String);
if (defaultPropertyAttr != null)
{
defaultProperty = defaultPropertyAttr.Name;
}
var ctor = type.GetConstructor(new[] { typeof(UltravioletContext), typeof(String) });
if (ctor == null && !type.IsAbstract)
{
throw new InvalidOperationException(PresentationStrings.UIElementInvalidCtor.Format(type.Name));
}
RuntimeHelpers.RunClassConstructor(type.TypeHandle);
var registration = new KnownElement(attr.Name ?? type.Name, type, defaultProperty);
RegisterDefaultComponentTemplate(type, attr);
return(registration);
}
/// <summary>
/// Gets the registration for the specified known element.
/// </summary>
/// <param name="type">The CLR type of the known element for which to retrieve a registration.</param>
/// <param name="registration">The registration for the known element associated with the specified CLR type.</param>
/// <returns><see langword="true"/> if a known element associated with the specified CLR type exists; otherwise, <c>false.</c></returns>
private Boolean GetKnownElementRegistration(Type type, out KnownElement registration)
{
KnownType typeRegistration;
if (GetKnownTypeRegistration(type, out typeRegistration) && typeRegistration is KnownElement)
{
registration = (KnownElement)typeRegistration;
return(true);
}
registration = null;
return(false);
}
