bundles/org.simantics.modeling/src/org/simantics/modeling/adapters/SCLCheckedStateRule.java

   1 package org.simantics.modeling.adapters;
   2
   3 import org.simantics.browsing.ui.CheckedState;
   4 import org.simantics.browsing.ui.model.check.CheckedStateRule;
   5 import org.simantics.db.ReadGraph;
   6 import org.simantics.db.Resource;
   7 import org.simantics.db.exception.DatabaseException;
   8 import org.simantics.db.layer0.variable.Variable;
   9 import org.simantics.db.layer0.variable.VariableOrResource;
  10 import org.simantics.db.layer0.variable.Variables;
  11 import org.simantics.modeling.ModelingResources;
  12 import org.simantics.scl.runtime.SCLContext;
  13 import org.simantics.scl.runtime.function.Function1;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 public class SCLCheckedStateRule implements CheckedStateRule {
  18
  19     private static final Logger LOGGER = LoggerFactory.getLogger(SCLCheckedStateRule.class);
  20
  21     private Resource rule;
  22
  23     public SCLCheckedStateRule(ReadGraph graph, Resource rule) {
  24         this.rule = rule;
  25     }
  26
  27     @Override
  28     public boolean isCompatible(Class<?> contentType) {
  29         return contentType.equals(Resource.class) || contentType.equals(Variable.class);
  30     }
  31
  32     @Override
  33     public CheckedState getCheckedState(ReadGraph graph, Object content) throws DatabaseException {
  34
  35         ModelingResources MOD = ModelingResources.getInstance(graph);
  36
  37         Variable ruleVariable = Variables.getVariable(graph, rule);
  38
  39         Function1<Object,CheckedState> getLabels = ruleVariable.getPossiblePropertyValue(graph, MOD.SCLCheckedStateRule_getState);
  40         if(getLabels == null) {
  41             LOGGER.warn("Didn't find value for subject={}, predicate={}.", rule, ModelingResources.URIs.SCLCheckedStateRule_getState);
  42             return CheckedState.NOT_CHECKED;
  43         }
  44
  45         SCLContext sclContext = SCLContext.getCurrent();
  46         Object oldGraph = sclContext.get("graph");
  47         try {
  48             sclContext.put("graph", graph);
  49             return getLabels.apply(VariableOrResource.make(content));
  50         } catch (Throwable t) {
  51             LOGGER.error("Calculating checked state failed.", t);
  52                 throw new DatabaseException(t);
  53         } finally {
  54             sclContext.put("graph", oldGraph);
  55         }
  56
  57     }
  58
  59 }