private void RemoveBusinessObjectFromCollectionNode
(IBusinessObjectCollection businessObjectCollection, IBusinessObject businessObject)
{
if (businessObjectCollection != null && ChildCollectionNodes.ContainsKey(businessObjectCollection))
{
NodeState nodeState = ChildCollectionNodes[businessObjectCollection];
if (nodeState.IsLoaded)
{
RemoveBusinessObjectNode(businessObject);
}
else
{
UpdateNodeDummy(nodeState, businessObjectCollection.Count);
}
}
}
///<summary>
/// Cleans up the tree view by derigistering for all BusinessObject events and removing
/// all nodes.
///</summary>
public void CleanUp()
{
foreach (KeyValuePair <IBusinessObject, NodeState> objectNode in ObjectNodes)
{
IBusinessObject businessObject = objectNode.Key;
UnRegisterForBusinessObjectEvents(businessObject);
}
ObjectNodes.Clear();
foreach (KeyValuePair <IBusinessObjectCollection, NodeState> collectionNode in ChildCollectionNodes)
{
IBusinessObjectCollection businessObjectCollection = collectionNode.Key;
UnRegisterForBusinessObjectCollectionEvents(businessObjectCollection);
}
ChildCollectionNodes.Clear();
RelationshipNodes.Clear();
RootNodeBusinessObject = null;
}
private void AddBusinessObjectToCollectionNode
(IBusinessObjectCollection businessObjectCollection, IBusinessObject businessObject)
{
if (businessObjectCollection != null && ChildCollectionNodes.ContainsKey(businessObjectCollection))
{
NodeState nodeState = ChildCollectionNodes[businessObjectCollection];
if (nodeState.IsLoaded)
{
ITreeNode node = nodeState.Node;
AddBusinessObjectNode(node.Nodes, businessObject);
}
else
{
UpdateNodeDummy(nodeState, businessObjectCollection.Count);
}
}
}
private void SetupRelationshipNodeDummy(IRelationship relationship, NodeState nodeState)
{
int childCount = 0;
if (relationship is IMultipleRelationship)
{
IMultipleRelationship multipleRelationship = (IMultipleRelationship)relationship;
IBusinessObjectCollection businessObjectCollection = multipleRelationship.BusinessObjectCollection;
ChildCollectionNodes.Add(businessObjectCollection, nodeState);
RegisterForBusinessObjectCollectionEvents(businessObjectCollection);
childCount = businessObjectCollection.Count;
}
else
{
//TODO: Do something decent with Single Relationship Updated Event
ISingleRelationship singleRelationship = (ISingleRelationship)relationship;
if (singleRelationship.HasRelatedObject())
{
childCount = 1;
}
}
UpdateNodeDummy(nodeState, childCount);
}
private void RemoveRelationshipNode(IRelationship relationship)
{
this.RelationshipNodes.Remove(relationship);
if (relationship is IMultipleRelationship)
{
IMultipleRelationship multipleRelationship = (IMultipleRelationship)relationship;
IBusinessObjectCollection children = multipleRelationship.BusinessObjectCollection;
ChildCollectionNodes.Remove(children);
foreach (IBusinessObject businessObject in children.Clone())
{
RemoveBusinessObjectNode(businessObject);
}
}
else
{
ISingleRelationship singleRelationship = (ISingleRelationship)relationship;
IBusinessObject businessObject = singleRelationship.GetRelatedObject();
if (businessObject != null)
{
RemoveBusinessObjectNode(businessObject);
}
}
}
