1 package org.simantics.diagram.symbolcontribution;
3 import org.simantics.db.ReadGraph;
4 import org.simantics.db.Resource;
5 import org.simantics.db.exception.DatabaseException;
6 import org.simantics.db.layer0.variable.Variable;
7 import org.simantics.db.layer0.variable.Variables;
8 import org.simantics.diagram.stubs.DiagramResource;
9 import org.simantics.scl.runtime.SCLContext;
10 import org.simantics.scl.runtime.function.Function3;
13 * @author Antti Villberg
15 public class SCLFilter implements SymbolContributionFilter {
19 public SCLFilter(Resource filter) {
24 public boolean accept(ReadGraph graph, Resource contribution, Resource filter, Resource diagram) throws DatabaseException {
26 DiagramResource DIA = DiagramResource.getInstance(graph);
28 Variable ruleVariable = Variables.getVariable(graph, filter);
30 Function3<Resource,Resource, Resource, Boolean> fn = ruleVariable.getPossiblePropertyValue(graph, DIA.SCLFilter_filter);
31 if(fn == null) return true;
33 SCLContext sclContext = SCLContext.getCurrent();
34 Object oldGraph = sclContext.get("graph");
36 sclContext.put("graph", graph);
37 return fn.apply(contribution, filter, diagram);
38 } catch (Throwable t) {
39 throw new DatabaseException(t);
41 sclContext.put("graph", oldGraph);