/// <summary>
/// Generates the diagram.
/// </summary>
/// <param name="graph">The graph.</param>
/// <param name="parentNode">The parent node.</param>
/// <returns>IList<Node>.</returns>
internal IList<Node> GenerateDiagram(Graph graph, Node parentNode)
{
var text = string.IsNullOrWhiteSpace(Description) ? Expression : Description;
var node = new Node
{
Text = text,
Category = "Decision",
Level = parentNode.Level + 1
};
graph.Nodes.Add(node);
graph.Links.Add(new Link { From = parentNode, To = node });
foreach (var trueAction in TrueActions)
{
var nodes = trueAction.GenerateDiagram(graph, node);
foreach (var childNode in nodes)
{
var link = graph.Links.FirstOrDefault(l => l.From == node && l.To == childNode);
if (link != null)
link.Text = "Yes";
}
}
foreach (var falseAction in FalseActions)
{
var nodes = falseAction.GenerateDiagram(graph, node);
foreach (var childNode in nodes)
{
var link = graph.Links.FirstOrDefault(l => l.From == node && l.To == childNode);
if (link != null)
link.Text = "No";
}
}
return new List<Node> { node };
}
/// <summary>
/// Generates the diagram JSon.
/// </summary>
/// <returns>GoJS formatted JSon with nodes and links</returns>
public string GenerateDiagram()
{
StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
var graph = new Graph();
var node = new Node { Text = string.IsNullOrWhiteSpace(Name) ? "Start" : Name, Category = "Start", Level = 0 };
graph.Nodes.Add(node);
foreach (var rule in Rules)
{
rule.GenerateDiagram(graph, node);
}
var terminateNode = new Node { Category = "End", Text = "End" };
graph.Nodes.Add(terminateNode);
var maxLevel = 0;
foreach (var n in graph.Nodes)
{
if (n.IsTerminal)
graph.Links.Add(new Link { From = n, To = terminateNode });
maxLevel = Math.Max(n.Level, maxLevel);
}
terminateNode.Level = maxLevel + 1;
using (JsonWriter writer = new JsonTextWriter(sw))
{
writer.Formatting = Formatting.Indented;
writer.WriteStartObject();
writer.WritePropertyName("class");
writer.WriteValue("go.GraphLinksModel");
writer.WritePropertyName("nodeDataArray");
writer.WriteStartArray();
var key = 0;
foreach (var n in graph.Nodes)
{
writer.WriteStartObject();
writer.WritePropertyName("key");
writer.WriteValue(--key);
n.Key = key;
if (n.Figure != null)
{
writer.WritePropertyName("figure");
writer.WriteValue(n.Figure);
}
if (!string.IsNullOrWhiteSpace(n.Category))
{
writer.WritePropertyName("category");
writer.WriteValue(n.Category);
}
if (n.EscalationLevel > 0)
{
writer.WritePropertyName("escalationLevel");
writer.WriteValue(n.EscalationLevel.ToString());
}
if (!string.IsNullOrWhiteSpace(n.Source))
{
writer.WritePropertyName("source");
writer.WriteValue(n.Source);
}
writer.WritePropertyName("text");
writer.WriteValue(n.Text);
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WritePropertyName("linkDataArray");
writer.WriteStartArray();
foreach (var link in graph.Links)
{
writer.WriteStartObject();
writer.WritePropertyName("from");
writer.WriteValue(link.From.Key);
writer.WritePropertyName("to");
writer.WriteValue(link.To.Key);
if (!string.IsNullOrWhiteSpace(link.Category))
{
writer.WritePropertyName("category");
writer.WriteValue(link.Category);
}
var text = string.IsNullOrWhiteSpace(link.Text) ? string.Empty : link.Text;
writer.WritePropertyName("text");
writer.WriteValue(text);
writer.WriteEndObject();
}
writer.WriteEndArray();
writer.WriteEndObject();
}
return sb.ToString();
}
