/// <summary>
/// Gets the object attributes for the given <paramref name="objectName"/>
/// using the information from the given <paramref name="attribute"/>.
/// This adds the object to the list of container objects if-and-only-if the
/// object is a container object.
/// </summary>
/// <param name="objectName">the object name</param>
/// <param name="attribute">the attribute for the given object name</param>
/// <param name="allContainerObjects">the list of all container objects</param>
/// <returns>the object attributes</returns>
private static ObjectAttributes GetObjectAttributes(AsfObjectName objectName, AsfAttribute attribute, ICollection <AsfObjectName> allContainerObjects)
{
// Retrieve list of object types (GUID)
List <Guid> objectTypes = new List <Guid>();
if (attribute.ObjectType != null)
{
foreach (string objectType in attribute.ObjectType.Split("|".ToCharArray()))
{
objectTypes.Add(new Guid(objectType));
}
}
// Retrieve suitable parents, all container objects if empty list
ICollection <AsfObjectName> suitableParents = attribute.SuitableParents;
if (suitableParents.Count == 0)
{
suitableParents = allContainerObjects;
}
// Update list of all container objects
if ((attribute.ObjectFlags & ObjectFlags.ContainerObject) == ObjectFlags.ContainerObject)
{
allContainerObjects.Add(objectName);
}
return(new ObjectAttributes(objectTypes.AsReadOnly(), attribute.ObjectFlags, suitableParents));
}
/// <summary>
/// Gets the object type flags for the given <paramref name="objectName"/>.
/// </summary>
/// <param name="objectName">the object name</param>
/// <returns>the object flags</returns>
public static ObjectFlags GetObjectFlags(this AsfObjectName objectName)
{
return(ObjectAttributesForObjectName[objectName].ObjectFlags);
}
/// <summary>
/// Returns whether the given <paramref name="objectFlag"/> is set for
/// the given <paramref name="objectName"/>.
/// </summary>
/// <param name="objectName">the object name</param>
/// <param name="objectFlag">the flag to test</param>
/// <returns>true if the flag is set, false otherwise</returns>
public static bool IsFlagSet(this AsfObjectName objectName, ObjectFlags objectFlag)
{
return((objectName.GetObjectFlags() & objectFlag) == objectFlag);
}
/// <summary>
/// Gets the suitable parents for the given <paramref name="objectName"/>.
/// </summary>
/// <param name="objectName">the object name</param>
/// <returns>the suitable parents</returns>
public static ICollection <AsfObjectName> GetSuitableParents(this AsfObjectName objectName)
{
return(ObjectAttributesForObjectName[objectName].SuitableParents);
}
public static bool IsTopLevel(this AsfObjectName objectName)
{
ICollection <AsfObjectName> suitableParents = objectName.GetSuitableParents();
return(suitableParents.Count == 1 && suitableParents.Contains(AsfObjectName.Root));
}
