/// <summary>
/// Callback for the 'add node' context menu option.
/// </summary>
/// <param name="sender">Sender object.</param>
/// <param name="args">Event data.</param>
private void OnAddNode(object sender, EventArgs args)
{
try
{
// todo: set location to context menu location
var node = new Node {
Name = graphView.DirectedGraph.NextNodeID()
};
StateNode newNode = new StateNode(node);
AddNode?.Invoke(this, new AddNodeEventArgs(newNode));
}
catch (Exception err)
{
ShowError(err);
}
}
/// <summary>
/// A graph object has been selected. Make the (middle part of) UI relevant to it
/// </summary>
/// <param name="objectName">Name of the object to be selected.</param>
public void Select(string objectName)
{
ctxBox.Foreach(c => ctxBox.Remove(c));
Arc arc = graphView.DirectedGraph.Arcs.Find(a => a.Name == objectName);
Node node = graphView.DirectedGraph.Nodes.Find(n => n.Name == objectName);
if (node != null)
{
//ctxLabel.Text = "State";
ctxFrame.Label = $"{node.Name} settings";
// Need to detach the event handlers before changing the entries.
// Otherwise a changed event will fire which we don't really want.
nameEntry.Changed -= OnNameChanged;
// Setting an entry's text to null doesn't seem to have an effect.
nameEntry.Text = objectName ?? "";
nameEntry.Changed += OnNameChanged;
if (nodeDescriptions.ContainsKey(objectName))
{
descEntry.Changed -= OnDescriptionChanged;
descEntry.Text = nodeDescriptions[objectName] ?? "";
descEntry.Changed += OnDescriptionChanged;
}
colourChooser.ColorSet -= OnColourChanged;
colourChooser.Rgba = node.Colour.ToRGBA();
colourChooser.ColorSet += OnColourChanged;
ctxBox.PackStart(nodeSelWdgt, true, true, 0);
}
else if (arc != null)
{
ctxFrame.Label = "Transition from " + arc.SourceName + " to " + arc.DestinationName;
RuleList.Text = String.Join(Environment.NewLine, rules[arc.Name].ToArray());
ActionList.Text = String.Join(Environment.NewLine, actions[arc.Name].ToArray());
ctxBox.PackStart(arcSelWdgt, true, true, 0);
}
else
{
//ctxLabel.Text = "Information";
//ctxBox.PackStart(infoWdgt, true, true, 0);
ctxFrame.Label = "";
}
ctxBox.ShowAll();
}