--- /dev/null
+package org.simantics.district.network.profile;
+
+import org.simantics.Simantics;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.scenegraph.INode;
+import org.simantics.scenegraph.g2d.G2DSceneGraph;
+import org.simantics.scenegraph.g2d.nodes.ConnectionNode;
+import org.simantics.scenegraph.profile.EvaluationContext;
+import org.simantics.scenegraph.profile.common.ProfileVariables;
+
+public class ArrowLengthStyle extends ThrottledStyleBase<Double> {
+
+ private static final Double PENDING = Double.NaN;
+ private static final Double ONE = 1.0;
+
+ @Override
+ public Double calculateThrottledStyle(ReadGraph graph, Resource runtimeDiagram, Resource entry, Resource groupItem) throws DatabaseException {
+ DiagramSettings ds = graph.syncRequest(new DiagramSettingsRequest(runtimeDiagram), TransientCacheAsyncListener.instance());
+ // Prevent PendingVariableExceptions from coming through
+ boolean wasSynchronous = graph.setSynchronous(true);
+ try {
+ Double length = ONE;
+ if (ds.arrowLengthProperty.isPresent()) {
+ length = Simantics.applySCLRead(graph, ds.arrowLengthProperty.get(), groupItem);
+ // System.out.println("read thickness: " + thickness + " : " + ds.arrowLengthProperty);
+ if (length == null) {
+ length = ONE;
+ } else {
+ length = length * ds.arrowLengthGain + ds.arrowLengthBias;
+ }
+ }
+
+ return length;
+ }
+ finally {
+ graph.setSynchronous(wasSynchronous);
+ }
+ }
+
+ @Override
+ public void applyThrottledStyleForNode(EvaluationContext observer, INode node, Double value) {
+// System.out.println("apply: " + node + " : " + value);
+ ConnectionNode n = (ConnectionNode) node;
+ if (value == PENDING) {
+ ((G2DSceneGraph)node.getRootNode()).setPending(node);
+ } else {
+ ((G2DSceneGraph)node.getRootNode()).clearPending(node);
+ }
+ for (INode nn : n.getNodes())
+ ProfileVariables.claimNodeProperty(nn, "arrowLength", value, observer);
+ }
+
+ @Override
+ protected void cleanupStyleForNode(EvaluationContext evaluationContext, INode node) {
+ ((G2DSceneGraph)node.getRootNode()).clearPending(node);
+ ConnectionNode n = (ConnectionNode) node;
+ for (INode nn : n.getNodes())
+ ProfileVariables.claimNodeProperty(nn, "arrowLength", null, evaluationContext);
+ }
+
+}