From a0809b57d402e300f8b5001527e99c89f974bddb Mon Sep 17 00:00:00 2001
From: jsimomaa <jani.simomaa@gmail.com>
Date: Fri, 7 Dec 2018 08:51:47 +0200
Subject: [PATCH] Change mapping of elements, not the mapping itself

gitlab #22

Change-Id: I93210fdb5c66469c5eb40451435745f23528313f
---
 .../ui/contributions/ChangeMappingTypeHandler.java    | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/org.simantics.district.network.ui/src/org/simantics/district/network/ui/contributions/ChangeMappingTypeHandler.java b/org.simantics.district.network.ui/src/org/simantics/district/network/ui/contributions/ChangeMappingTypeHandler.java
index 2b3d1888..1f948335 100644
--- a/org.simantics.district.network.ui/src/org/simantics/district/network/ui/contributions/ChangeMappingTypeHandler.java
+++ b/org.simantics.district.network.ui/src/org/simantics/district/network/ui/contributions/ChangeMappingTypeHandler.java
@@ -245,18 +245,25 @@ public class ChangeMappingTypeHandler {
         
         @Override
         protected void computeResult() {
+            Map<NamedResource, Collection<NamedResource>> currentElements = null;
+            try {
+                currentElements = elements.get();
+            } catch (InterruptedException | ExecutionException e) {
+                LOGGER.error("Could not get currentElements", e);
+                throw new RuntimeException("Could not get currentElements", e);
+            }
             for (Map.Entry<NamedResource, Combo> combos : mappingCombos.entrySet()) {
                 NamedResource resource = combos.getKey();
                 Combo c = combos.getValue();
                 String item = c.getItem(c.getSelectionIndex());
-                
+                Collection<NamedResource> collection = currentElements.get(resource);
                 Map<String, Resource> map = possibleMappings.get(resource);
                 Resource newMapping = map.get(item);
                 results.compute(newMapping, (t, u) -> {
                     if (u == null) {
                         u = new HashSet<>();
                     }
-                    u.add(resource);
+                    u.addAll(collection);
                     return u;
                 });
             }
-- 
2.47.1