public SimpleGroup(IfcGroup group, SimpleGroup parent)
{
if (group == null) throw new ArgumentNullException();
_group = group;
_parent = parent;
Init();
}
private void Init()
{
_children = new List<SimpleGroup>();
_buildingElementTypes = new List<SimpleBuildingElementType>();
IEnumerable<IfcRelAssignsToGroup> rels = _model.Instances.Where<IfcRelAssignsToGroup>(r => r.RelatingGroup == _group).ToList();
if (rels.FirstOrDefault() == null)
{
using (XbimReadWriteTransaction trans = _model.BeginTransaction("Group relation creation"))
{
var rel = _model.Instances.New<IfcRelAssignsToGroup>(r => r.RelatingGroup = _group);
trans.Commit();
(rel as INotifyPropertyChanged).PropertyChanged += new PropertyChangedEventHandler(RelationChanged);
(rel.RelatedObjects as INotifyCollectionChanged).CollectionChanged -= new NotifyCollectionChangedEventHandler(ElementCollectionChanged);
(rel.RelatedObjects as INotifyCollectionChanged).CollectionChanged += new NotifyCollectionChangedEventHandler(ElementCollectionChanged);
}
}
else
{
foreach (var rel in rels)
{
(rel as INotifyPropertyChanged).PropertyChanged += new PropertyChangedEventHandler(RelationChanged);
(rel.RelatedObjects as INotifyCollectionChanged).CollectionChanged -= new NotifyCollectionChangedEventHandler(ElementCollectionChanged);
(rel.RelatedObjects as INotifyCollectionChanged).CollectionChanged += new NotifyCollectionChangedEventHandler(ElementCollectionChanged);
IEnumerable<IfcGroup> groups = rel.RelatedObjects.OfType<IfcGroup>();
foreach (IfcGroup group in groups)
{
SimpleGroup child = new SimpleGroup(group, this);
child.PropertyChanged += new PropertyChangedEventHandler(ChildChanged);
_children.Add(child);
}
IEnumerable<IfcTypeProduct> types = rel.RelatedObjects.OfType<IfcTypeProduct>();
foreach (var type in types)
{
SimpleBuildingElementType simpleType = new SimpleBuildingElementType(type);
simpleType.PropertyChanged -= new PropertyChangedEventHandler(TypeChanged);
simpleType.PropertyChanged += new PropertyChangedEventHandler(TypeChanged);
_buildingElementTypes.Add(simpleType);
}
}
}
}
private static SimpleBuildingElementType GetTypeFromHierarchy(IfcTypeProduct type, SimpleGroup group)
{
SimpleBuildingElementType simpleType = group._buildingElementTypes.Where(t => t.IfcType == type).FirstOrDefault();
if (simpleType != null) return simpleType;
foreach (var subGroup in group._children)
{
simpleType = GetTypeFromHierarchy(type, subGroup);
if (simpleType != null) return simpleType;
}
return null;
}