bundles/org.simantics.modeling/src/org/simantics/modeling/ComponentTypeScriptRuntimeEnvironmentRequest.java

   1 package org.simantics.modeling;
   2
   3 import org.simantics.db.ReadGraph;
   4 import org.simantics.db.common.request.ParametrizedPrimitiveRead;
   5 import org.simantics.db.procedure.Listener;
   6 import org.simantics.scl.compiler.environment.specification.EnvironmentSpecification;
   7 import org.simantics.scl.compiler.module.repository.ImportFailureException;
   8 import org.simantics.scl.compiler.module.repository.UpdateListener;
   9 import org.simantics.scl.compiler.runtime.RuntimeEnvironment;
  10 import org.simantics.scl.osgi.SCLOsgi;
  11 import org.simantics.scl.runtime.SCLContext;
  12
  13 public class ComponentTypeScriptRuntimeEnvironmentRequest extends ParametrizedPrimitiveRead<EnvironmentSpecification, RuntimeEnvironment> {
  14     UpdateListener listener;
  15
  16     public ComponentTypeScriptRuntimeEnvironmentRequest(EnvironmentSpecification parameter) {
  17         super(parameter);
  18     }
  19
  20     @Override
  21     public void register(ReadGraph graph, Listener<RuntimeEnvironment> procedure) {
  22         if(!procedure.isDisposed() && listener == null) {
  23             listener = new UpdateListener() {
  24                 @Override
  25                 public void notifyAboutUpdate() {
  26                     createRuntimeEnvironment(graph, procedure, this);
  27                 }
  28             };
  29         }
  30         createRuntimeEnvironment(graph, procedure, listener);
  31     }
  32
  33     @Override
  34     public void unregistered() {
  35         if(listener != null)
  36             listener.stopListening();
  37     }
  38
  39     private void createRuntimeEnvironment(ReadGraph graph, Listener<RuntimeEnvironment> procedure, UpdateListener listener) {
  40         SCLContext context = SCLContext.getCurrent();
  41         Object oldGraph = context.put("graph", graph);
  42         try {
  43             procedure.execute(SCLOsgi.MODULE_REPOSITORY.createRuntimeEnvironment(parameter, ComponentTypeScriptRuntimeEnvironmentRequest.class.getClassLoader(), listener));
  44         }
  45         catch (ImportFailureException e) {
  46             procedure.exception(e);
  47         }
  48         finally {
  49             context.put("graph", oldGraph);
  50         }
  51     }
  52
  53 }