public void RenderFocusGraph(String cssFile,
GraphNode focusGraphNode,
Int32 depth,
String traversalName,
String graphName,
HashSet <String> keys = null)
{
SvgEditor e = new SvgEditor(graphName);
e.AddCssFile(cssFile);
lock (this.svgEditors)
{
this.svgEditors.Add(e);
}
SENodeGroup seGroupParents = new SENodeGroup("", "parents");
SENodeGroup seGroupFocus = new SENodeGroup("", "focus");
SENodeGroup seGroupChildren = new SENodeGroup("", "children");
seGroupParents.AppendGroup(seGroupFocus);
seGroupFocus.AppendGroup(seGroupChildren);
SENode focusSENode = this.CreateNode(focusGraphNode);
focusSENode.Class = "focus";
seGroupFocus.AppendNode(focusSENode);
{
IEnumerable <SENode> parentNodes = TraverseParents(focusGraphNode,
focusSENode,
$"{traversalName}/*",
1);
seGroupParents.AppendNodeRange(parentNodes);
}
{
IEnumerable <SENodeGroup> childNodes = TraverseChildren(focusGraphNode,
$"{traversalName}/*",
depth,
keys, new Stack <GraphNode>());
seGroupFocus.AppendGroupRange(childNodes);
}
seGroupParents.Sort();
this.legends.TryGetValue("focus", out List <GraphLegend> legendNodes);
e.Render(seGroupParents, legendNodes);
}
IEnumerable <SENodeGroup> TraverseChildren(GraphNode focusNode,
String traversalFilter,
Int32 depth,
HashSet <String> keys,
Stack <GraphNode> nodeStack)
{
if (nodeStack.Contains(focusNode))
{
throw new Exception($"Circular linkage at {focusNode.TraceMsg()}");
}
nodeStack.Push(focusNode);
Regex traversalFilterRex = new Regex(traversalFilter);
bool HasKey(GraphNode.Link childLink) => (keys == null) || keys.Overlaps(childLink.Keys);
foreach (GraphNode.Link childLink in focusNode.ChildLinks)
{
if (
(depth > 0) &&
(traversalFilterRex.IsMatch(childLink.Traversal.TraversalName)) &&
(HasKey(childLink))
)
{
SENode child = CreateNode(childLink.Node);
SENodeGroup childContainer = new SENodeGroup(child.SortPrefix, child.AllText());
childContainer.AppendNode(child);
childContainer.AppendGroupRange(TraverseChildren(childLink.Node,
traversalFilter,
depth - childLink.Depth,
keys, nodeStack));
yield return(childContainer);
}
}
nodeStack.Pop();
}
