/// <summary>
/// Gets all element descriptors that are valid at the given document node.
/// </summary>
private IEnumerable <ElementDescriptor> GetElementDescriptors(List <string> path, bool getChildren)
{
IElementDescriptorProvider provider = DescriptorProvider;
if (provider == null)
{
return(Enumerable.Empty <ElementDescriptor>());
}
if ((path == null) || (path.Count == 0))
{
return(provider.Descriptors);
}
// Walk towards the given node, as element descriptor provider.
foreach (var name in path)
{
provider = provider.Descriptors.FirstOrDefault(x => x.Name == name);
if (provider == null)
{
return(Enumerable.Empty <ElementDescriptor>());
}
}
if (getChildren)
{
return(provider.Descriptors);
}
var descriptor = provider as ElementDescriptor;
if (descriptor == null)
{
return(Enumerable.Empty <ElementDescriptor>());
}
return(new[] { descriptor });
}
/// <summary>
/// Gets the attribute descriptor that is valid for the given attribute.
/// </summary>
private AttributeDescriptor GetAttributeDescriptor(List <string> path, string localName)
{
IElementDescriptorProvider provider = DescriptorProvider;
if (provider == null)
{
return(null);
}
var nodeDescriptor = GetElementDescriptors(path, false).FirstOrDefault();
if (nodeDescriptor == null)
{
return(null);
}
return(nodeDescriptor.Attributes.FirstOrDefault(x => x.Name == localName));
}