1 files changed, 34 insertions, 0 deletions
diff --git a/source/com/c2kernel/lifecycle/instance/gui/model/WfEdgeFactory.java b/source/com/c2kernel/lifecycle/instance/gui/model/WfEdgeFactory.java
new file mode 100755
index 0000000..f79d312
--- /dev/null
+++ b/source/com/c2kernel/lifecycle/instance/gui/model/WfEdgeFactory.java
@@ -0,0 +1,34 @@
+package com.c2kernel.lifecycle.instance.gui.model;
+
+import com.c2kernel.graph.model.DirectedEdge;
+import com.c2kernel.graph.model.EdgeFactory;
+import com.c2kernel.graph.model.GraphModelManager;
+import com.c2kernel.graph.model.TypeNameAndConstructionInfo;
+import com.c2kernel.graph.model.Vertex;
+import com.c2kernel.lifecycle.instance.WfVertex;
+
+public class WfEdgeFactory implements EdgeFactory
+{
+    public void create
+    (
+        GraphModelManager           graphModelManager,
+        Vertex                      origin,
+        Vertex                      terminus,
+        TypeNameAndConstructionInfo typeNameAndConstructionInfo
+    )
+    {
+		if ( validCreation( graphModelManager, origin, terminus ) )
+			((WfVertex)origin).addNext((WfVertex)terminus);
+
+    }
+
+    private boolean validCreation( GraphModelManager graphModelManager, Vertex origin, Vertex terminus )
+    {
+        DirectedEdge[] connectingEdgesAToB = graphModelManager.getModel().getConnectingEdges( origin.getID()  , terminus.getID() );
+        DirectedEdge[] connectingEdgesBToA = graphModelManager.getModel().getConnectingEdges( terminus.getID(), origin.getID() );
+
+
+        return ( origin != terminus ) && ( connectingEdgesAToB.length == 0 ) && ( connectingEdgesBToA.length == 0 );
+    }
+}
+