X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.simulator.toolkit%2Fsrc%2Forg%2Fsimantics%2Fsimulator%2Ftoolkit%2FStandardRealm.java;h=8551222b22d2183b866aff466a83e35a537e8dcf;hp=e228b603d803d86a2fa6146bccbdd51a294b57ad;hb=bb4e04be3cb29a5d08e412cd4eaa90ad0158b954;hpb=a5a5b0f8e0d52f5e400e3857c12fe862dd2e2dd9

diff --git a/bundles/org.simantics.simulator.toolkit/src/org/simantics/simulator/toolkit/StandardRealm.java b/bundles/org.simantics.simulator.toolkit/src/org/simantics/simulator/toolkit/StandardRealm.java
index e228b603d..8551222b2 100644
--- a/bundles/org.simantics.simulator.toolkit/src/org/simantics/simulator/toolkit/StandardRealm.java
+++ b/bundles/org.simantics.simulator.toolkit/src/org/simantics/simulator/toolkit/StandardRealm.java
@@ -46,7 +46,21 @@ abstract public class StandardRealm<Node, Engine extends StandardNodeManagerSupp
         this.nodeManager = createManager();
     }
 
-    abstract protected StandardNodeManager<Node, Engine> createManager();
+    protected StandardNodeManager<Node, Engine> createManager(Node root) {
+        return new StandardNodeManager<Node, Engine>(this, root);
+    }
+
+    protected StandardNodeManager<Node, Engine> createManager() {
+        return createManager(createRootNode());
+    }
+
+    /*
+     * For compatibility reasons. Existing implementations implement createManager() directly and in that case this is not needed.
+     * New implementations should not implement createManager() but rather implement this.
+     */
+    protected Node createRootNode() {
+        throw new UnsupportedOperationException();
+    }
 
     protected String getSCLContextKey() {
         return getClass().getSimpleName();