/// <summary>
/// Callback for the 'duplicate node' context menu option.
/// </summary>
/// <remarks>
/// Does this belong in the presenter?
/// </remarks>
/// <param name="sender">Sending object.</param>
/// <param name="args">Event data.</param>
private void OnDuplicateNode(object sender, EventArgs args)
{
try
{
if (graphView.SelectedObject is DGNode node)
{
List <StateNode> nodes = Nodes;
List <RuleAction> arcs = Arcs;
// Create a copy of the existing node.
StateNode newNode = new StateNode(node.ToNode());
newNode.Location = new System.Drawing.Point(newNode.Location.X + node.Width / 2, newNode.Location.Y);
newNode.Name = graphView.DirectedGraph.NextNodeID();
if (nodeDescriptions.ContainsKey(node.Name))
{
newNode.Description = nodeDescriptions[node.Name];
}
nodes.Add(newNode);
// Copy all arcs moving to/from the existing node.
DirectedGraph graph = graphView.DirectedGraph;
foreach (var arc in graphView.DirectedGraph.Arcs.FindAll(arc => arc.SourceName == node.Name))
{
RuleAction newArc = new RuleAction(arc);
newArc.Name = graph.NextArcID();
newArc.SourceName = newNode.Name;
if (rules.ContainsKey(arc.Name))
{
newArc.Conditions = rules[arc.Name];
}
if (actions.ContainsKey(arc.Name))
{
newArc.Actions = actions[arc.Name];
}
arcs.Add(newArc);
// Add the arc to the local copy of the directed graph.
// Need to do this to ensure that NextArcID() doesn't
// generate the same name when we call it multiple times.
graph.AddArc(newArc);
}
foreach (var arc in graphView.DirectedGraph.Arcs.FindAll(arc => arc.DestinationName == graphView.SelectedObject.Name))
{
RuleAction newArc = new RuleAction(arc);
newArc.Name = graph.NextArcID();
newArc.DestinationName = newNode.Name;
if (rules.ContainsKey(arc.Name))
{
newArc.Conditions = rules[arc.Name];
}
if (actions.ContainsKey(arc.Name))
{
newArc.Actions = actions[arc.Name];
}
arcs.Add(newArc);
// Add the arc to the local copy of the directed graph.
// Need to do this to ensure that NextArcID() doesn't
// generate the same name when we call it multiple times.
graph.AddArc(newArc);
}
OnGraphChanged?.Invoke(this, new GraphChangedEventArgs(arcs, nodes));
}
}
catch (Exception err)
{
ShowError(err);
}
}
