public bool IsAvailable(IUserDataHolder cache)
{
var identifier = myDataProvider.GetSelectedElement <ICSharpIdentifier>();
var classLikeDeclaration = ClassLikeDeclarationNavigator.GetByNameIdentifier(identifier);
if (classLikeDeclaration == null)
{
return(false);
}
ITypeElement declaredElement = classLikeDeclaration.DeclaredElement;
if (declaredElement.DerivesFrom(KnownTypes.EditorWindow))
{
return(false);
}
if (declaredElement.DerivesFrom(KnownTypes.Editor))
{
return(false);
}
var existingAttribute = classLikeDeclaration.GetAttribute(KnownTypes.CreateAssetMenuAttribute);
return(existingAttribute == null && declaredElement.DerivesFromScriptableObject());
}