From 9a37dabc6c0212ed3e14499c88df3208cd06f9b0 Mon Sep 17 00:00:00 2001
From: jsimomaa <jani.simomaa@gmail.com>
Date: Sat, 16 Nov 2019 09:45:43 +0200
Subject: [PATCH] Introduce new DiagramViewer.getRuntimeFromManager()

* The original DiagramViewer.getRuntime() returns cached version of the
runtime diagram resource

gitlab #416

Change-Id: Id2723f5deb94cdba15e815229d9a1931482ace16
---
 .../modeling/ui/diagramEditor/DiagramViewer.java       | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewer.java b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewer.java
index a0f504030..409aecbea 100644
--- a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewer.java
+++ b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/diagramEditor/DiagramViewer.java
@@ -236,6 +236,7 @@ public class DiagramViewer
     protected GridSnapAdvisor            snapAdvisor;
 
     private RuntimeDiagramManager        runtimeDiagramManager;
+    private Resource                     runtimeDiagramResourceCache;
     private HasDiagramSourceListener     hasDiagramSourceListener;
 
     /**
@@ -245,11 +246,18 @@ public class DiagramViewer
      */
     protected WorkbenchSelectionProvider selectionProvider;
 
-    public Resource getRuntime() {
+    protected Resource getRuntimeFromManager() {
         RuntimeDiagramManager rtdm = runtimeDiagramManager;
         return (rtdm == null) ? null : rtdm.getRuntimeDiagram();
     }
 
+    public Resource getRuntime() {
+        if (runtimeDiagramResourceCache != null)
+            return runtimeDiagramResourceCache;
+        runtimeDiagramResourceCache = getRuntimeFromManager();
+        return runtimeDiagramResourceCache;
+    }
+
     public ParametrizedRead<IResourceEditorInput, Boolean> getInputValidator() {
         return INPUT_VALIDATOR;
     }
-- 
2.43.2