public void HighlightTriggerEventHandler(object sender, HighlightTriggeredEventArgs args)
{
if (Graph == null || HighlightAlgorithm == null)
{
return;
}
if (args.OriginalSource is VertexControl)
{
var vc = (VertexControl)args.OriginalSource;
var vertex = vc.Vertex as TVertex;
if (vertex == null || !Graph.ContainsVertex(vertex))
{
return;
}
if (args.IsPositiveTrigger)
{
HighlightAlgorithm.OnVertexHighlighting(vertex);
}
else
{
HighlightAlgorithm.OnVertexHighlightRemoving(vertex);
}
}
else if (args.OriginalSource is EdgeControl)
{
var ec = (EdgeControl)args.OriginalSource;
TEdge edge = default(TEdge);
try
{
edge = (TEdge)ec.Edge;
}
catch
{
}
if (Equals(edge, default(TEdge)) || !Graph.ContainsEdge(edge))
{
return;
}
if (args.IsPositiveTrigger)
{
HighlightAlgorithm.OnEdgeHighlighting(edge);
}
else
{
HighlightAlgorithm.OnEdgeHighlightRemoving(edge);
}
}
}