From 0eef0d4984f3fbd757f0421cc71f1428ec1235a1 Mon Sep 17 00:00:00 2001
From: Antti Villberg <antti.villberg@semantum.fi>
Date: Mon, 20 Mar 2017 07:44:48 +0200
Subject: [PATCH] Experiment state request

refs #7036

Change-Id: I2704afcc626a3deb7430eb1a42ea453f71e931d6
---
 .../scl/Simantics/Simulation.scl              |  5 +++
 .../simulation/experiment/Experiment.java     | 37 ++++++++++++++++++-
 .../simulation/experiment/ExperimentUtil.java |  4 ++
 3 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/bundles/org.simantics.modeling/scl/Simantics/Simulation.scl b/bundles/org.simantics.modeling/scl/Simantics/Simulation.scl
index 4935fafcd..460d1cd0e 100644
--- a/bundles/org.simantics.modeling/scl/Simantics/Simulation.scl
+++ b/bundles/org.simantics.modeling/scl/Simantics/Simulation.scl
@@ -6,10 +6,15 @@ importJava "org.simantics.simulation.experiment.ExperimentUtil" where
     stepExperiment :: IExperiment -> Double -> <Proc> ()
     simulateExperiment :: IExperiment -> Boolean -> <Proc> ()
     disposeExperiment :: IExperiment -> <Proc> ()
+    getExperimentState :: IExperiment -> <ReadGraph> ExperimentState
     possibleActiveRunVariable ::Resource -> <ReadGraph> Variable
     
 importJava "org.simantics.simulation.experiment.IExperiment" where
     data IExperiment
+
+importJava "org.simantics.simulation.experiment.ExperimentState" where
+    data ExperimentState
+    INITIALIZING, RUNNING, STOPPED, DISPOSED :: ExperimentState
     
 experimentFromRun :: Variable -> <ReadGraph> IExperiment
 experimentFromRun run = (run#iExperiment) :: IExperiment
\ No newline at end of file
diff --git a/bundles/org.simantics.simulation/src/org/simantics/simulation/experiment/Experiment.java b/bundles/org.simantics.simulation/src/org/simantics/simulation/experiment/Experiment.java
index b4222df01..41125d0a0 100644
--- a/bundles/org.simantics.simulation/src/org/simantics/simulation/experiment/Experiment.java
+++ b/bundles/org.simantics.simulation/src/org/simantics/simulation/experiment/Experiment.java
@@ -19,6 +19,8 @@ import org.simantics.databoard.accessor.Accessor;
 import org.simantics.db.ReadGraph;
 import org.simantics.db.Resource;
 import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.procedure.Listener;
+import org.simantics.db.request.ExternalRead;
 import org.simantics.utils.datastructures.ListenerList;
 
 public abstract class Experiment implements IExperiment {
@@ -64,7 +66,7 @@ public abstract class Experiment implements IExperiment {
     
     @Override
     public ExperimentState getState(ReadGraph graph) throws DatabaseException {
-    	throw new UnsupportedOperationException();
+    	return graph.syncRequest(EXPERIMENT_STATE_READ);
     }
 
     public void changeState(ExperimentState newState) {
@@ -136,4 +138,37 @@ public abstract class Experiment implements IExperiment {
         return identifier;
     }
 
+    static class ExperimentStateRead implements ExternalRead<ExperimentState>, Runnable {
+    	
+    	final private Experiment experiment;
+        private Listener<ExperimentState> listener = null;
+        
+        ExperimentStateRead(Experiment experiment) {
+        	this.experiment = experiment;
+        }
+
+        @Override
+        public void register(ReadGraph graph, final Listener<ExperimentState> procedure) {
+            //System.out.println("IcTrackerRequest.register: " + procedure);
+            listener = procedure;
+            procedure.execute(experiment.state);
+        }
+
+        @Override
+        public void unregistered() {
+            //System.out.println("IcTrackerRequest.unregister: " + listener);
+            listener = null;
+        }
+
+        @Override
+        public void run() {
+            Listener<ExperimentState> l = listener;
+            //System.out.println("IcTrackerRequest.run: " + l);
+            if (l != null)
+                l.execute(experiment.state);
+        }
+    }
+
+    private ExperimentStateRead EXPERIMENT_STATE_READ = new ExperimentStateRead(this);
+    
 }
diff --git a/bundles/org.simantics.simulation/src/org/simantics/simulation/experiment/ExperimentUtil.java b/bundles/org.simantics.simulation/src/org/simantics/simulation/experiment/ExperimentUtil.java
index 24f6065c5..a819ef8ed 100644
--- a/bundles/org.simantics.simulation/src/org/simantics/simulation/experiment/ExperimentUtil.java
+++ b/bundles/org.simantics.simulation/src/org/simantics/simulation/experiment/ExperimentUtil.java
@@ -47,6 +47,10 @@ public final class ExperimentUtil {
             ((IDynamicExperiment)experiment).simulate(enabled);
     }
 
+    public static ExperimentState getExperimentState(ReadGraph graph, IExperiment experiment) throws DatabaseException {
+    	return experiment.getState(graph);
+    }
+        
     public static void disposeExperiment(final IExperiment experiment) {
     	
         if(experiment instanceof IDynamicExperiment) {
-- 
2.47.1