public void RemoveNode(Node node)
{
NodeRemoving?.Invoke(this, new RoutedEventArgs(NodeRemovingEvent, node));
if (node == null)
{
return;
}
if (this._selectedNode == node)
{
this._selectedNode = null;
}
this.Children.Remove(node);
foreach (Connector conn in node.Connectors)
{
//prevent 'collection changed' error
HashSet <Connector> safeConnections = new HashSet <Connector>(conn.Connections);
foreach (Connector other in safeConnections)
{
if (conn.Mode == Connector.ConnectorMode.Input)
{
RemoveConnectionPath(other, conn);
}
else
{
RemoveConnectionPath(conn, other);
}
conn.Disconnect(other);
}
}
}
/// <summary>
/// Removes a Node from the collection</summary>
/// <param name="item">Node</param>
/// <returns>True iff Node removed</returns>
public bool Remove(Node item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
if (IsReadOnly)
{
throw new InvalidOperationException("collection is read only");
}
if (item.HasChildren)
{
item.Nodes.Clear();
}
NodeRemoving.Raise(this, new NodeEventArgs(item));
return(m_nodes.Remove(item));
}
