Merge remote-tracking branch 'origin/master' into release/1.35.1

[simantics/district.git] / org.simantics.district.network / src / org / simantics / district / network / profile / VertexSymbolStyle.java

diff --git a/org.simantics.district.network/src/org/simantics/district/network/profile/VertexSymbolStyle.java b/org.simantics.district.network/src/org/simantics/district/network/profile/VertexSymbolStyle.java
new file mode 100644 (file)
index 0000000..26a5564
--- /dev/null
+++ b/org.simantics.district.network/src/org/simantics/district/network/profile/VertexSymbolStyle.java
@@ -0,0 +1,93 @@
+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.TransientCacheListener;
+import org.simantics.db.common.request.ResourceRead;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.district.network.ontology.DistrictNetworkResource;
+import org.simantics.layer0.Layer0;
+import org.simantics.scenegraph.INode;
+import org.simantics.scenegraph.g2d.G2DSceneGraph;
+import org.simantics.scenegraph.g2d.nodes.SingleElementNode;
+import org.simantics.scenegraph.profile.EvaluationContext;
+import org.simantics.scenegraph.profile.common.ProfileVariables;
+import org.simantics.scl.runtime.function.Function;
+import org.simantics.scl.runtime.function.FunctionImpl1;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class VertexSymbolStyle extends ThrottledStyleBase<String> {
+
+       private static final Logger LOGGER = LoggerFactory.getLogger(VertexSymbolStyle.class);
+       
+       @SuppressWarnings({ "rawtypes", "unchecked" })
+       @Override
+       public String calculateThrottledStyle(ReadGraph graph, Resource runtimeDiagram, Resource entry, Resource groupItem) throws DatabaseException {
+               // Prevent PendingVariableExceptions from coming through
+               boolean wasSynchronous = graph.setSynchronous(true);
+               try {
+                       Function symbolFunction = getSymbolFunction(graph, entry);
+                       if (symbolFunction == null)
+                               return null;
+                       
+                       try {
+                               return (String) Simantics.applySCLRead(graph, symbolFunction, groupItem);
+                       } catch (Exception e) {
+                               LOGGER.error("Getting dynamic symbol for " + groupItem + " (" + graph.getPossibleRelatedValue(groupItem, Layer0.getInstance(graph).HasName) + ") failed", e);
+                               return null;
+                       }
+               }
+               finally {
+                       graph.setSynchronous(wasSynchronous);
+               }
+       }
+
+       @SuppressWarnings("rawtypes")
+       protected static Function getSymbolFunction(ReadGraph graph, Resource entry) throws DatabaseException {
+               // Cache function read for profile entry
+               return graph.syncRequest(new SymbolFunctionRequest(entry), TransientCacheListener.<Function>instance());
+       }
+
+       @Override
+       public void applyThrottledStyleForNode(EvaluationContext observer, INode node, String value) {
+               SingleElementNode n = (SingleElementNode) node;
+               for (INode nn : n.getNodes())
+                       ProfileVariables.claimNodeProperty(nn, "SVG", value, observer);
+       }
+
+       @Override
+       protected void cleanupStyleForNode(EvaluationContext evaluationContext, INode node) {
+               ((G2DSceneGraph)node.getRootNode()).clearPending(node);
+               SingleElementNode n = (SingleElementNode) node;
+               for (INode nn : n.getNodes())
+                       ProfileVariables.claimNodeProperty(nn, "SVG", null, evaluationContext);
+       }
+
+       @SuppressWarnings("rawtypes")
+       protected static final class SymbolFunctionRequest extends ResourceRead<Function> {
+               protected static final Function CONST_NULL = new FunctionImpl1<Resource, String>() {
+                       @Override
+                       public String apply(Resource p0) {
+                               return null;
+                       }
+               };
+               
+               public SymbolFunctionRequest(Resource entry) {
+                       super(entry);
+               }
+
+               @Override
+               public Function perform(ReadGraph graph) throws DatabaseException {
+                       DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
+                       
+                       Function symbolFunction = (Function) graph.getPossibleRelatedValue2(resource, DN.HasSymbolFunction, resource);
+                       if (symbolFunction == null)
+                               symbolFunction = CONST_NULL;
+                       
+                       return symbolFunction;
+               }
+       }
+
+}