public override void ElementDeleting(ElementDeletingEventArgs e)
{
if (e.ModelElement != null)
{
if (e.ModelElement.Store.TransactionManager.CurrentTransaction != null)
{
if (e.ModelElement.Store.TransactionManager.CurrentTransaction.IsSerializing)
{
return;
}
}
}
if (e.ModelElement == null)
{
return;
}
if (ImmutabilityExtensionMethods.GetLocks(e.ModelElement) != Locks.None)
{
return;
}
TreeNodeReferencesReferenceRSNodes con = e.ModelElement as TreeNodeReferencesReferenceRSNodes;
if (con != null)
{
ReferenceRSNode rsNode = con.ReferenceRSNode;
if (rsNode != null)
{
ReferenceNode node = rsNode.ReferenceNode;
if (node != null)
{
// since this node still exists, it isnt included in the deletion process
// --> move to root node if this node is the element holder, as its parent has been deleted
if (node.IsElementHolder)
{
RootNode rootNode = new RootNode(node.Store);
rootNode.DomainElement = node.DomainElement;
node.EmbeddingModelTreeViewModel.RootNodes.Add(rootNode);
node.EmbeddingModelTreeViewModel.ModelTreeNodes.Add(rootNode);
// copy sub tree
for (int i = node.EmbeddingRSNodes.Count - 1; i >= 0; i--)
{
node.EmbeddingRSNodes[i].TreeNode = rootNode;
}
for (int i = node.ReferenceRSNodes.Count - 1; i >= 0; i--)
{
node.ReferenceRSNodes[i].TreeNode = rootNode;
}
for (int i = node.InheritanceNodes.Count - 1; i >= 0; i--)
{
node.InheritanceNodes[i].TreeNode = rootNode;
}
for (int i = node.ShapeClassNodes.Count - 1; i >= 0; i--)
{
node.ShapeClassNodes[i].TreeNode = rootNode;
}
rootNode.IsElementHolder = true;
rootNode.IsEmbeddingTreeExpanded = node.IsEmbeddingTreeExpanded;
rootNode.IsExpanded = true;
rootNode.IsInheritanceTreeExpanded = node.IsInheritanceTreeExpanded;
rootNode.IsReferenceTreeExpanded = node.IsReferenceTreeExpanded;
rootNode.IsShapeMappingTreeExpanded = node.IsShapeMappingTreeExpanded;
}
node.Delete();
}
rsNode.Delete();
}
}
}
